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libfuse cleanup: reindent

pull/809/head
Antonio SJ Musumeci 4 years ago
parent
da07bc9637
commit
f9b831eb1a
28 changed files with 10990 additions and 10991 deletions
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  1. 102
      libfuse/include/cuse_lowlevel.h
  2. 1793
      libfuse/include/fuse.h
  3. 836
      libfuse/include/fuse_common.h
  4. 13
      libfuse/include/fuse_common_compat.h
  5. 241
      libfuse/include/fuse_compat.h
  6. 20
      libfuse/include/fuse_dirents.h
  7. 3450
      libfuse/include/fuse_lowlevel.h
  8. 226
      libfuse/include/fuse_lowlevel_compat.h
  9. 434
      libfuse/include/fuse_opt.h
  10. 10
      libfuse/include/fuse_timeouts.h
  11. 476
      libfuse/lib/buffer.c
  12. 508
      libfuse/lib/cuse_lowlevel.c
  13. 4961
      libfuse/lib/fuse.c
  14. 140
      libfuse/lib/fuse_i.h
  15. 106
      libfuse/lib/fuse_kern_chan.c
  16. 58
      libfuse/lib/fuse_loop.c
  17. 308
      libfuse/lib/fuse_loop_mt.c
  18. 3966
      libfuse/lib/fuse_lowlevel.c
  19. 14
      libfuse/lib/fuse_misc.h
  20. 143
      libfuse/lib/fuse_mt.c
  21. 593
      libfuse/lib/fuse_opt.c
  22. 204
      libfuse/lib/fuse_session.c
  23. 71
      libfuse/lib/fuse_signals.c
  24. 478
      libfuse/lib/helper.c
  25. 590
      libfuse/lib/mount_bsd.c
  26. 992
      libfuse/lib/mount_generic.c
  27. 554
      libfuse/lib/mount_util.c
  28. 694
      libfuse/lib/ulockmgr.c

102
libfuse/include/cuse_lowlevel.h
View File

@ -28,57 +28,57 @@ extern "C" {
#define CUSE_UNRESTRICTED_IOCTL (1 << 0) /* use unrestricted ioctl */
struct fuse_session;
struct cuse_info {
unsigned dev_major;
unsigned dev_minor;
unsigned dev_info_argc;
const char **dev_info_argv;
unsigned flags;
};
/*
* Most ops behave almost identically to the matching fuse_lowlevel
* ops except that they don't take @ino.
*
* init_done : called after initialization is complete
* read/write : always direct IO, simultaneous operations allowed
* ioctl : might be in unrestricted mode depending on ci->flags
*/
struct cuse_lowlevel_ops {
void (*init) (void *userdata, struct fuse_conn_info *conn);
void (*init_done) (void *userdata);
void (*destroy) (void *userdata);
void (*open) (fuse_req_t req, struct fuse_file_info *fi);
void (*read) (fuse_req_t req, size_t size, off_t off,
struct fuse_file_info *fi);
void (*write) (fuse_req_t req, const char *buf, size_t size, off_t off,
struct fuse_file_info *fi);
void (*flush) (fuse_req_t req, struct fuse_file_info *fi);
void (*release) (fuse_req_t req, struct fuse_file_info *fi);
void (*fsync) (fuse_req_t req, int datasync, struct fuse_file_info *fi);
void (*ioctl) (fuse_req_t req, int cmd, void *arg,
struct fuse_file_info *fi, unsigned int flags,
const void *in_buf, size_t in_bufsz, size_t out_bufsz);
void (*poll) (fuse_req_t req, struct fuse_file_info *fi,
struct fuse_pollhandle *ph);
};
struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop,
void *userdata);
struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop,
int *multithreaded, void *userdata);
void cuse_lowlevel_teardown(struct fuse_session *se);
int cuse_lowlevel_main(int argc, char *argv[], const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop, void *userdata);
struct fuse_session;
struct cuse_info {
unsigned dev_major;
unsigned dev_minor;
unsigned dev_info_argc;
const char **dev_info_argv;
unsigned flags;
};
/*
* Most ops behave almost identically to the matching fuse_lowlevel
* ops except that they don't take @ino.
*
* init_done : called after initialization is complete
* read/write : always direct IO, simultaneous operations allowed
* ioctl : might be in unrestricted mode depending on ci->flags
*/
struct cuse_lowlevel_ops {
void (*init) (void *userdata, struct fuse_conn_info *conn);
void (*init_done) (void *userdata);
void (*destroy) (void *userdata);
void (*open) (fuse_req_t req, struct fuse_file_info *fi);
void (*read) (fuse_req_t req, size_t size, off_t off,
struct fuse_file_info *fi);
void (*write) (fuse_req_t req, const char *buf, size_t size, off_t off,
struct fuse_file_info *fi);
void (*flush) (fuse_req_t req, struct fuse_file_info *fi);
void (*release) (fuse_req_t req, struct fuse_file_info *fi);
void (*fsync) (fuse_req_t req, int datasync, struct fuse_file_info *fi);
void (*ioctl) (fuse_req_t req, int cmd, void *arg,
struct fuse_file_info *fi, unsigned int flags,
const void *in_buf, size_t in_bufsz, size_t out_bufsz);
void (*poll) (fuse_req_t req, struct fuse_file_info *fi,
struct fuse_pollhandle *ph);
};
struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop,
void *userdata);
struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop,
int *multithreaded, void *userdata);
void cuse_lowlevel_teardown(struct fuse_session *se);
int cuse_lowlevel_main(int argc, char *argv[], const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop, void *userdata);
#ifdef __cplusplus
}

1793
libfuse/include/fuse.h
File diff suppressed because it is too large
View File

836
libfuse/include/fuse_common.h
View File

@ -16,6 +16,7 @@
#define _FUSE_COMMON_H_
#include "fuse_opt.h"
#include "fuse_timeouts.h"
#include <stdint.h>
#include <sys/types.h>
@ -40,79 +41,72 @@
extern "C" {
#endif
typedef struct fuse_timeouts_s fuse_timeouts_t;
struct fuse_timeouts_s
{
uint64_t entry;
uint64_t attr;
};
/**
* Information about open files
*
* Changed in version 2.5
*/
struct
fuse_file_info
{
/** Open flags. Available in open() and release() */
int flags;
/** In case of a write operation indicates if this was caused by a
writepage */
uint32_t writepage : 1;
/** Can be filled in by open, to use direct I/O on this file.
Introduced in version 2.4 */
uint32_t direct_io : 1;
/** Can be filled in by open, to indicate, that cached file data
need not be invalidated. Introduced in version 2.4 */
uint32_t keep_cache : 1;
/** Indicates a flush operation. Set in flush operation, also
maybe set in highlevel lock operation and lowlevel release
operation. Introduced in version 2.6 */
uint32_t flush : 1;
/** Can be filled in by open, to indicate that the file is not
seekable. Introduced in version 2.8 */
uint32_t nonseekable : 1;
/* Indicates that flock locks for this file should be
released. If set, lock_owner shall contain a valid value.
May only be set in ->release(). Introduced in version
2.9 */
uint32_t flock_release : 1;
/* Requests the kernel to cache entries returned by readdir */
uint32_t cache_readdir : 1;
uint32_t auto_cache : 1;
/** File handle. May be filled in by filesystem in open().
Available in all other file operations */
uint64_t fh;
/** Lock owner id. Available in locking operations and flush */
uint64_t lock_owner;
};
/**
* Capability bits for 'fuse_conn_info.capable' and 'fuse_conn_info.want'
*
* FUSE_CAP_ASYNC_READ: filesystem supports asynchronous read requests
* FUSE_CAP_POSIX_LOCKS: filesystem supports "remote" locking
* FUSE_CAP_ATOMIC_O_TRUNC: filesystem handles the O_TRUNC open flag
* FUSE_CAP_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
* FUSE_CAP_BIG_WRITES: filesystem can handle write size larger than 4kB
* FUSE_CAP_DONT_MASK: don't apply umask to file mode on create operations
* FUSE_CAP_SPLICE_WRITE: ability to use splice() to write to the fuse device
* FUSE_CAP_SPLICE_MOVE: ability to move data to the fuse device with splice()
* FUSE_CAP_SPLICE_READ: ability to use splice() to read from the fuse device
* FUSE_CAP_IOCTL_DIR: ioctl support on directories
* FUSE_CAP_CACHE_SYMLINKS: cache READLINK responses
*/
/**
* Information about open files
*
* Changed in version 2.5
*/
struct
fuse_file_info
{
/** Open flags. Available in open() and release() */
int flags;
/** In case of a write operation indicates if this was caused by a
writepage */
uint32_t writepage : 1;
/** Can be filled in by open, to use direct I/O on this file.
Introduced in version 2.4 */
uint32_t direct_io : 1;
/** Can be filled in by open, to indicate, that cached file data
need not be invalidated. Introduced in version 2.4 */
uint32_t keep_cache : 1;
/** Indicates a flush operation. Set in flush operation, also
maybe set in highlevel lock operation and lowlevel release
operation. Introduced in version 2.6 */
uint32_t flush : 1;
/** Can be filled in by open, to indicate that the file is not
seekable. Introduced in version 2.8 */
uint32_t nonseekable : 1;
/* Indicates that flock locks for this file should be
released. If set, lock_owner shall contain a valid value.
May only be set in ->release(). Introduced in version
2.9 */
uint32_t flock_release : 1;
/* Requests the kernel to cache entries returned by readdir */
uint32_t cache_readdir : 1;
uint32_t auto_cache : 1;
/** File handle. May be filled in by filesystem in open().
Available in all other file operations */
uint64_t fh;
/** Lock owner id. Available in locking operations and flush */
uint64_t lock_owner;
};
/**
* Capability bits for 'fuse_conn_info.capable' and 'fuse_conn_info.want'
*
* FUSE_CAP_ASYNC_READ: filesystem supports asynchronous read requests
* FUSE_CAP_POSIX_LOCKS: filesystem supports "remote" locking
* FUSE_CAP_ATOMIC_O_TRUNC: filesystem handles the O_TRUNC open flag
* FUSE_CAP_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
* FUSE_CAP_BIG_WRITES: filesystem can handle write size larger than 4kB
* FUSE_CAP_DONT_MASK: don't apply umask to file mode on create operations
* FUSE_CAP_SPLICE_WRITE: ability to use splice() to write to the fuse device
* FUSE_CAP_SPLICE_MOVE: ability to move data to the fuse device with splice()
* FUSE_CAP_SPLICE_READ: ability to use splice() to read from the fuse device
* FUSE_CAP_IOCTL_DIR: ioctl support on directories
* FUSE_CAP_CACHE_SYMLINKS: cache READLINK responses
*/
#define FUSE_CAP_ASYNC_READ (1 << 0)
#define FUSE_CAP_POSIX_LOCKS (1 << 1)
#define FUSE_CAP_ATOMIC_O_TRUNC (1 << 3)
@ -133,16 +127,16 @@ fuse_file_info
#define FUSE_CAP_CACHE_SYMLINKS (1 << 20)
#define FUSE_CAP_MAX_PAGES (1 << 21)
/**
* Ioctl flags
*
* FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
* FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
* FUSE_IOCTL_RETRY: retry with new iovecs
* FUSE_IOCTL_DIR: is a directory
*
* FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
*/
/**
* Ioctl flags
*
* FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
* FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
* FUSE_IOCTL_RETRY: retry with new iovecs
* FUSE_IOCTL_DIR: is a directory
*
* FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
*/
#define FUSE_IOCTL_COMPAT (1 << 0)
#define FUSE_IOCTL_UNRESTRICTED (1 << 1)
#define FUSE_IOCTL_RETRY (1 << 2)
@ -150,344 +144,344 @@ fuse_file_info
#define FUSE_IOCTL_MAX_IOV 256
/**
* Connection information, passed to the ->init() method
*
* Some of the elements are read-write, these can be changed to
* indicate the value requested by the filesystem. The requested
* value must usually be smaller than the indicated value.
*/
struct fuse_conn_info {
/**
* Major version of the protocol (read-only)
*/
unsigned proto_major;
/**
* Minor version of the protocol (read-only)
*/
unsigned proto_minor;
/**
* Maximum size of the write buffer
*/
unsigned max_write;
/**
* Maximum readahead
*/
unsigned max_readahead;
/**
* Capability flags, that the kernel supports
*/
unsigned capable;
/**
* Capability flags, that the filesystem wants to enable
*/
unsigned want;
/**
* Maximum number of backgrounded requests
*/
unsigned max_background;
/**
* Kernel congestion threshold parameter
*/
unsigned congestion_threshold;
/**
* Max pages
*/
uint16_t max_pages;
/**
* For future use.
*/
unsigned reserved[22];
};
struct fuse_session;
struct fuse_chan;
struct fuse_pollhandle;
/**
* Create a FUSE mountpoint
*
* Returns a control file descriptor suitable for passing to
* fuse_new()
*
* @param mountpoint the mount point path
* @param args argument vector
* @return the communication channel on success, NULL on failure
*/
struct fuse_chan *fuse_mount(const char *mountpoint,
struct fuse_args *args);
/**
* Umount a FUSE mountpoint
*
* @param mountpoint the mount point path
* @param ch the communication channel
*/
void fuse_unmount(const char *mountpoint, struct fuse_chan *ch);
/**
* Parse common options
*
* The following options are parsed:
*
* '-f' foreground
* '-d' '-odebug' foreground, but keep the debug option
* '-s' single threaded
* '-h' '--help' help
* '-ho' help without header
* '-ofsname=..' file system name, if not present, then set to the program
* name
*
* All parameters may be NULL
*
* @param args argument vector
* @param mountpoint the returned mountpoint, should be freed after use
* @param multithreaded set to 1 unless the '-s' option is present
* @param foreground set to 1 if one of the relevant options is present
* @return 0 on success, -1 on failure
*/
int fuse_parse_cmdline(struct fuse_args *args, char **mountpoint,
int *multithreaded, int *foreground);
/**
* Go into the background
*
* @param foreground if true, stay in the foreground
* @return 0 on success, -1 on failure
*/
int fuse_daemonize(int foreground);
/**
* Get the version of the library
*
* @return the version
*/
int fuse_version(void);
/**
* Destroy poll handle
*
* @param ph the poll handle
*/
void fuse_pollhandle_destroy(struct fuse_pollhandle *ph);
/* ----------------------------------------------------------- *
* Data buffer *
* ----------------------------------------------------------- */
/**
* Buffer flags
*/
enum fuse_buf_flags {
/**
* Buffer contains a file descriptor
*
* If this flag is set, the .fd field is valid, otherwise the
* .mem fields is valid.
*/
FUSE_BUF_IS_FD = (1 << 1),
/**
* Seek on the file descriptor
*
* If this flag is set then the .pos field is valid and is
* used to seek to the given offset before performing
* operation on file descriptor.
*/
FUSE_BUF_FD_SEEK = (1 << 2),
/**
* Retry operation on file descriptor
*
* If this flag is set then retry operation on file descriptor
* until .size bytes have been copied or an error or EOF is
* detected.
*/
FUSE_BUF_FD_RETRY = (1 << 3),
};
/**
* Buffer copy flags
*/
enum fuse_buf_copy_flags {
/**
* Don't use splice(2)
*
* Always fall back to using read and write instead of
* splice(2) to copy data from one file descriptor to another.
*
* If this flag is not set, then only fall back if splice is
* unavailable.
*/
FUSE_BUF_NO_SPLICE = (1 << 1),
/**
* Force splice
*
* Always use splice(2) to copy data from one file descriptor
* to another. If splice is not available, return -EINVAL.
*/
FUSE_BUF_FORCE_SPLICE = (1 << 2),
/**
* Try to move data with splice.
*
* If splice is used, try to move pages from the source to the
* destination instead of copying. See documentation of
* SPLICE_F_MOVE in splice(2) man page.
*/
FUSE_BUF_SPLICE_MOVE = (1 << 3),
/**
* Don't block on the pipe when copying data with splice
*
* Makes the operations on the pipe non-blocking (if the pipe
* is full or empty). See SPLICE_F_NONBLOCK in the splice(2)
* man page.
*/
FUSE_BUF_SPLICE_NONBLOCK= (1 << 4),
};
/**
* Single data buffer
*
* Generic data buffer for I/O, extended attributes, etc... Data may
* be supplied as a memory pointer or as a file descriptor
*/
struct fuse_buf {
/**
* Size of data in bytes
*/
size_t size;
/**
* Buffer flags
*/
enum fuse_buf_flags flags;
/**
* Memory pointer
*
* Used unless FUSE_BUF_IS_FD flag is set.
*/
void *mem;
/**
* File descriptor
*
* Used if FUSE_BUF_IS_FD flag is set.
*/
int fd;
/**
* File position
*
* Used if FUSE_BUF_FD_SEEK flag is set.
*/
off_t pos;
};
/**
* Data buffer vector
*
* An array of data buffers, each containing a memory pointer or a
* file descriptor.
*
* Allocate dynamically to add more than one buffer.
*/
struct fuse_bufvec {
/**
* Number of buffers in the array
*/
size_t count;
/**
* Index of current buffer within the array
*/
size_t idx;
/**
* Current offset within the current buffer
*/
size_t off;
/**
* Array of buffers
*/
struct fuse_buf buf[1];
};
/* Initialize bufvec with a single buffer of given size */
#define FUSE_BUFVEC_INIT(size__) \
((struct fuse_bufvec) { \
/* .count= */ 1, \
/* .idx = */ 0, \
/* .off = */ 0, \
/* .buf = */ { /* [0] = */ { \
/* .size = */ (size__), \
/* .flags = */ (enum fuse_buf_flags) 0, \
/* .mem = */ NULL, \
/* .fd = */ -1, \
/* .pos = */ 0, \
} } \
} )
/**
* Get total size of data in a fuse buffer vector
*
* @param bufv buffer vector
* @return size of data
*/
size_t fuse_buf_size(const struct fuse_bufvec *bufv);
/**
* Copy data from one buffer vector to another
*
* @param dst destination buffer vector
* @param src source buffer vector
* @param flags flags controlling the copy
* @return actual number of bytes copied or -errno on error
*/
ssize_t fuse_buf_copy(struct fuse_bufvec *dst, struct fuse_bufvec *src,
enum fuse_buf_copy_flags flags);
/* ----------------------------------------------------------- *
* Signal handling *
* ----------------------------------------------------------- */
/**
* Exit session on HUP, TERM and INT signals and ignore PIPE signal
*
* Stores session in a global variable. May only be called once per
* process until fuse_remove_signal_handlers() is called.
*
* @param se the session to exit
* @return 0 on success, -1 on failure
*/
int fuse_set_signal_handlers(struct fuse_session *se);
/**
* Restore default signal handlers
*
* Resets global session. After this fuse_set_signal_handlers() may
* be called again.
*
* @param se the same session as given in fuse_set_signal_handlers()
*/
void fuse_remove_signal_handlers(struct fuse_session *se);
/* ----------------------------------------------------------- *
* Compatibility stuff *
* ----------------------------------------------------------- */
/**
* Connection information, passed to the ->init() method
*
* Some of the elements are read-write, these can be changed to
* indicate the value requested by the filesystem. The requested
* value must usually be smaller than the indicated value.
*/
struct fuse_conn_info {
/**
* Major version of the protocol (read-only)
*/
unsigned proto_major;
/**
* Minor version of the protocol (read-only)
*/
unsigned proto_minor;
/**
* Maximum size of the write buffer
*/
unsigned max_write;
/**
* Maximum readahead
*/
unsigned max_readahead;
/**
* Capability flags, that the kernel supports
*/
unsigned capable;
/**
* Capability flags, that the filesystem wants to enable
*/
unsigned want;
/**
* Maximum number of backgrounded requests
*/
unsigned max_background;
/**
* Kernel congestion threshold parameter
*/
unsigned congestion_threshold;
/**
* Max pages
*/
uint16_t max_pages;
/**
* For future use.
*/
unsigned reserved[22];
};
struct fuse_session;
struct fuse_chan;
struct fuse_pollhandle;
/**
* Create a FUSE mountpoint
*
* Returns a control file descriptor suitable for passing to
* fuse_new()
*
* @param mountpoint the mount point path
* @param args argument vector
* @return the communication channel on success, NULL on failure
*/
struct fuse_chan *fuse_mount(const char *mountpoint,
struct fuse_args *args);
/**
* Umount a FUSE mountpoint
*
* @param mountpoint the mount point path
* @param ch the communication channel
*/
void fuse_unmount(const char *mountpoint, struct fuse_chan *ch);
/**
* Parse common options
*
* The following options are parsed:
*
* '-f' foreground
* '-d' '-odebug' foreground, but keep the debug option
* '-s' single threaded
* '-h' '--help' help
* '-ho' help without header
* '-ofsname=..' file system name, if not present, then set to the program
* name
*
* All parameters may be NULL
*
* @param args argument vector
* @param mountpoint the returned mountpoint, should be freed after use
* @param multithreaded set to 1 unless the '-s' option is present
* @param foreground set to 1 if one of the relevant options is present
* @return 0 on success, -1 on failure
*/
int fuse_parse_cmdline(struct fuse_args *args, char **mountpoint,
int *multithreaded, int *foreground);
/**
* Go into the background
*
* @param foreground if true, stay in the foreground
* @return 0 on success, -1 on failure
*/
int fuse_daemonize(int foreground);
/**
* Get the version of the library
*
* @return the version
*/
int fuse_version(void);
/**
* Destroy poll handle
*
* @param ph the poll handle
*/
void fuse_pollhandle_destroy(struct fuse_pollhandle *ph);
/* ----------------------------------------------------------- *
* Data buffer *
* ----------------------------------------------------------- */
/**
* Buffer flags
*/
enum fuse_buf_flags {
/**
* Buffer contains a file descriptor
*
* If this flag is set, the .fd field is valid, otherwise the
* .mem fields is valid.
*/
FUSE_BUF_IS_FD = (1 << 1),
/**
* Seek on the file descriptor
*
* If this flag is set then the .pos field is valid and is
* used to seek to the given offset before performing
* operation on file descriptor.
*/
FUSE_BUF_FD_SEEK = (1 << 2),
/**
* Retry operation on file descriptor
*
* If this flag is set then retry operation on file descriptor
* until .size bytes have been copied or an error or EOF is
* detected.
*/
FUSE_BUF_FD_RETRY = (1 << 3),
};
/**
* Buffer copy flags
*/
enum fuse_buf_copy_flags {
/**
* Don't use splice(2)
*
* Always fall back to using read and write instead of
* splice(2) to copy data from one file descriptor to another.
*
* If this flag is not set, then only fall back if splice is
* unavailable.
*/
FUSE_BUF_NO_SPLICE = (1 << 1),
/**
* Force splice
*
* Always use splice(2) to copy data from one file descriptor
* to another. If splice is not available, return -EINVAL.
*/
FUSE_BUF_FORCE_SPLICE = (1 << 2),
/**
* Try to move data with splice.
*
* If splice is used, try to move pages from the source to the
* destination instead of copying. See documentation of
* SPLICE_F_MOVE in splice(2) man page.
*/
FUSE_BUF_SPLICE_MOVE = (1 << 3),
/**
* Don't block on the pipe when copying data with splice
*
* Makes the operations on the pipe non-blocking (if the pipe
* is full or empty). See SPLICE_F_NONBLOCK in the splice(2)
* man page.
*/
FUSE_BUF_SPLICE_NONBLOCK= (1 << 4),
};
/**
* Single data buffer
*
* Generic data buffer for I/O, extended attributes, etc... Data may
* be supplied as a memory pointer or as a file descriptor
*/
struct fuse_buf {
/**
* Size of data in bytes
*/
size_t size;
/**
* Buffer flags
*/
enum fuse_buf_flags flags;
/**
* Memory pointer
*
* Used unless FUSE_BUF_IS_FD flag is set.
*/
void *mem;
/**
* File descriptor
*
* Used if FUSE_BUF_IS_FD flag is set.
*/
int fd;
/**
* File position
*
* Used if FUSE_BUF_FD_SEEK flag is set.
*/
off_t pos;
};
/**
* Data buffer vector
*
* An array of data buffers, each containing a memory pointer or a
* file descriptor.
*
* Allocate dynamically to add more than one buffer.
*/
struct fuse_bufvec {
/**
* Number of buffers in the array
*/
size_t count;
/**
* Index of current buffer within the array
*/
size_t idx;
/**
* Current offset within the current buffer
*/
size_t off;
/**
* Array of buffers
*/
struct fuse_buf buf[1];
};
/* Initialize bufvec with a single buffer of given size */
#define FUSE_BUFVEC_INIT(size__) \
((struct fuse_bufvec) { \
/* .count= */ 1, \
/* .idx = */ 0, \
/* .off = */ 0, \
/* .buf = */ { /* [0] = */ { \
/* .size = */ (size__), \
/* .flags = */ (enum fuse_buf_flags) 0, \
/* .mem = */ NULL, \
/* .fd = */ -1, \
/* .pos = */ 0, \
} } \
} )
/**
* Get total size of data in a fuse buffer vector
*
* @param bufv buffer vector
* @return size of data
*/
size_t fuse_buf_size(const struct fuse_bufvec *bufv);
/**
* Copy data from one buffer vector to another
*
* @param dst destination buffer vector
* @param src source buffer vector
* @param flags flags controlling the copy
* @return actual number of bytes copied or -errno on error
*/
ssize_t fuse_buf_copy(struct fuse_bufvec *dst, struct fuse_bufvec *src,
enum fuse_buf_copy_flags flags);
/* ----------------------------------------------------------- *
* Signal handling *
* ----------------------------------------------------------- */
/**
* Exit session on HUP, TERM and INT signals and ignore PIPE signal
*
* Stores session in a global variable. May only be called once per
* process until fuse_remove_signal_handlers() is called.
*
* @param se the session to exit
* @return 0 on success, -1 on failure
*/
int fuse_set_signal_handlers(struct fuse_session *se);
/**
* Restore default signal handlers
*
* Resets global session. After this fuse_set_signal_handlers() may
* be called again.
*
* @param se the same session as given in fuse_set_signal_handlers()
*/
void fuse_remove_signal_handlers(struct fuse_session *se);
/* ----------------------------------------------------------- *
* Compatibility stuff *
* ----------------------------------------------------------- */
#if FUSE_USE_VERSION < 26
# ifdef __FreeBSD__

13
libfuse/include/fuse_common_compat.h
View File

@ -9,12 +9,13 @@
/* these definitions provide source compatibility to prior versions.
Do not include this file directly! */
struct fuse_file_info_compat {
int flags;
unsigned long fh;
int writepage;
unsigned int direct_io : 1;
unsigned int keep_cache : 1;
struct fuse_file_info_compat
{
int flags;
unsigned long fh;
int writepage;
unsigned int direct_io : 1;
unsigned int keep_cache : 1;
};
int fuse_mount_compat25(const char *mountpoint, struct fuse_args *args);

241
libfuse/include/fuse_compat.h
View File

@ -9,44 +9,45 @@
/* these definitions provide source compatibility to prior versions.
Do not include this file directly! */
struct fuse_operations_compat25 {
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, struct fuse_file_info *);
int (*read) (const char *, char *, size_t, off_t,
struct fuse_file_info *);
int (*write) (const char *, const char *, size_t, off_t,
struct fuse_file_info *);
int (*statfs) (const char *, struct statvfs *);
int (*flush) (const char *, struct fuse_file_info *);
int (*release) (const char *, struct fuse_file_info *);
int (*fsync) (const char *, int, struct fuse_file_info *);
int (*setxattr) (const char *, const char *, const char *, size_t, int);
int (*getxattr) (const char *, const char *, char *, size_t);
int (*listxattr) (const char *, char *, size_t);
int (*removexattr) (const char *, const char *);
int (*opendir) (const char *, struct fuse_file_info *);
int (*readdir) (const char *, void *, off_t,
struct fuse_file_info *);
int (*releasedir) (const char *, struct fuse_file_info *);
int (*fsyncdir) (const char *, int, struct fuse_file_info *);
void *(*init) (void);
void (*destroy) (void *);
int (*access) (const char *, int);
int (*create) (const char *, mode_t, struct fuse_file_info *);
int (*ftruncate) (const char *, off_t, struct fuse_file_info *);
int (*fgetattr) (const char *, struct stat *, struct fuse_file_info *);
struct fuse_operations_compat25
{
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, struct fuse_file_info *);
int (*read) (const char *, char *, size_t, off_t,
struct fuse_file_info *);
int (*write) (const char *, const char *, size_t, off_t,
struct fuse_file_info *);
int (*statfs) (const char *, struct statvfs *);
int (*flush) (const char *, struct fuse_file_info *);
int (*release) (const char *, struct fuse_file_info *);
int (*fsync) (const char *, int, struct fuse_file_info *);
int (*setxattr) (const char *, const char *, const char *, size_t, int);
int (*getxattr) (const char *, const char *, char *, size_t);
int (*listxattr) (const char *, char *, size_t);
int (*removexattr) (const char *, const char *);
int (*opendir) (const char *, struct fuse_file_info *);
int (*readdir) (const char *, void *, off_t,
struct fuse_file_info *);
int (*releasedir) (const char *, struct fuse_file_info *);
int (*fsyncdir) (const char *, int, struct fuse_file_info *);
void *(*init) (void);
void (*destroy) (void *);
int (*access) (const char *, int);
int (*create) (const char *, mode_t, struct fuse_file_info *);
int (*ftruncate) (const char *, off_t, struct fuse_file_info *);
int (*fgetattr) (const char *, struct stat *, struct fuse_file_info *);
};
struct fuse *fuse_new_compat25(int fd, struct fuse_args *args,
@ -68,39 +69,39 @@ void fuse_teardown_compat22(struct fuse *fuse, int fd, char *mountpoint);
#include <sys/statfs.h>
struct fuse_operations_compat22 {
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, struct fuse_file_info_compat *);
int (*read) (const char *, char *, size_t, off_t,
struct fuse_file_info_compat *);
int (*write) (const char *, const char *, size_t, off_t,
struct fuse_file_info_compat *);
int (*statfs) (const char *, struct statfs *);
int (*flush) (const char *, struct fuse_file_info_compat *);
int (*release) (const char *, struct fuse_file_info_compat *);
int (*fsync) (const char *, int, struct fuse_file_info_compat *);
int (*setxattr) (const char *, const char *, const char *, size_t, int);
int (*getxattr) (const char *, const char *, char *, size_t);
int (*listxattr) (const char *, char *, size_t);
int (*removexattr) (const char *, const char *);
int (*opendir) (const char *, struct fuse_file_info_compat *);
int (*readdir) (const char *, void *, off_t,
struct fuse_file_info_compat *);
int (*releasedir) (const char *, struct fuse_file_info_compat *);
int (*fsyncdir) (const char *, int, struct fuse_file_info_compat *);
void *(*init) (void);
void (*destroy) (void *);
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, struct fuse_file_info_compat *);
int (*read) (const char *, char *, size_t, off_t,
struct fuse_file_info_compat *);
int (*write) (const char *, const char *, size_t, off_t,
struct fuse_file_info_compat *);
int (*statfs) (const char *, struct statfs *);
int (*flush) (const char *, struct fuse_file_info_compat *);
int (*release) (const char *, struct fuse_file_info_compat *);
int (*fsync) (const char *, int, struct fuse_file_info_compat *);
int (*setxattr) (const char *, const char *, const char *, size_t, int);
int (*getxattr) (const char *, const char *, char *, size_t);
int (*listxattr) (const char *, char *, size_t);
int (*removexattr) (const char *, const char *);
int (*opendir) (const char *, struct fuse_file_info_compat *);
int (*readdir) (const char *, void *, off_t,
struct fuse_file_info_compat *);
int (*releasedir) (const char *, struct fuse_file_info_compat *);
int (*fsyncdir) (const char *, int, struct fuse_file_info_compat *);
void *(*init) (void);
void (*destroy) (void *);
};
struct fuse *fuse_new_compat22(int fd, const char *opts,
@ -117,31 +118,31 @@ int fuse_main_real_compat22(int argc, char *argv[],
size_t op_size);
struct fuse_operations_compat2 {
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, int);
int (*read) (const char *, char *, size_t, off_t);
int (*write) (const char *, const char *, size_t, off_t);
int (*statfs) (const char *, struct statfs *);
int (*flush) (const char *);
int (*release) (const char *, int);
int (*fsync) (const char *, int);
int (*setxattr) (const char *, const char *, const char *,
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, int);
int (*read) (const char *, char *, size_t, off_t);
int (*write) (const char *, const char *, size_t, off_t);
int (*statfs) (const char *, struct statfs *);
int (*flush) (const char *);
int (*release) (const char *, int);
int (*fsync) (const char *, int);
int (*setxattr) (const char *, const char *, const char *,
size_t, int);
int (*getxattr) (const char *, const char *, char *, size_t);
int (*listxattr) (const char *, char *, size_t);
int (*removexattr) (const char *, const char *);
int (*getxattr) (const char *, const char *, char *, size_t);
int (*listxattr) (const char *, char *, size_t);
int (*removexattr) (const char *, const char *);
};
int fuse_main_compat2(int argc, char *argv[],
@ -155,34 +156,34 @@ struct fuse *fuse_setup_compat2(int argc, char *argv[],
char **mountpoint, int *multithreaded, int *fd);
struct fuse_statfs_compat1 {
long block_size;
long blocks;
long blocks_free;
long files;
long files_free;
long namelen;
long block_size;
long blocks;
long blocks_free;
long files;
long files_free;
long namelen;
};
struct fuse_operations_compat1 {
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, int);
int (*read) (const char *, char *, size_t, off_t);
int (*write) (const char *, const char *, size_t, off_t);
int (*statfs) (struct fuse_statfs_compat1 *);
int (*release) (const char *, int);
int (*fsync) (const char *, int);
int (*getattr) (const char *, struct stat *);
int (*readlink) (const char *, char *, size_t);
int (*mknod) (const char *, mode_t, dev_t);
int (*mkdir) (const char *, mode_t);
int (*unlink) (const char *);
int (*rmdir) (const char *);
int (*symlink) (const char *, const char *);
int (*rename) (const char *, const char *);
int (*link) (const char *, const char *);
int (*chmod) (const char *, mode_t);
int (*chown) (const char *, uid_t, gid_t);
int (*truncate) (const char *, off_t);
int (*utime) (const char *, struct utimbuf *);
int (*open) (const char *, int);
int (*read) (const char *, char *, size_t, off_t);
int (*write) (const char *, const char *, size_t, off_t);
int (*statfs) (struct fuse_statfs_compat1 *);
int (*release) (const char *, int);
int (*fsync) (const char *, int);
};
#define FUSE_DEBUG_COMPAT1 (1 << 1)

20
libfuse/include/fuse_dirents.h
View File

@ -18,9 +18,9 @@
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include "extern_c.h"
EXTERN_C_BEGIN
#include "kvec.h"
#include "fuse_dirent.h"
@ -36,11 +36,11 @@ extern "C" {
#include <unistd.h>
enum fuse_dirents_type_e
{
UNSET = 0,
NORMAL,
PLUS
};
{
UNSET = 0,
NORMAL,
PLUS
};
typedef enum fuse_dirents_type_e fuse_dirents_type_t;
typedef struct fuse_dirents_s fuse_dirents_t;
@ -79,6 +79,4 @@ void *fuse_dirents_find(fuse_dirents_t *d,
int fuse_dirents_convert_plus2normal(fuse_dirents_t *d);
#ifdef __cplusplus
}
#endif
EXTERN_C_END

3450
libfuse/include/fuse_lowlevel.h
File diff suppressed because it is too large
View File

226
libfuse/include/fuse_lowlevel_compat.h
View File

@ -9,63 +9,64 @@
/* these definitions provide source compatibility to prior versions.
Do not include this file directly! */
struct fuse_lowlevel_ops_compat25 {
void (*init) (void *userdata);
void (*destroy) (void *userdata);
void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
void (*getattr) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info *fi);
void (*readlink) (fuse_req_t req, fuse_ino_t ino);
void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, dev_t rdev);
void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode);
void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
const char *name);
void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
fuse_ino_t newparent, const char *newname);
void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
const char *newname);
void (*open) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi);
void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info *fi);
void (*flush) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*release) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi);
void (*opendir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi);
void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi);
void (*statfs) (fuse_req_t req);
void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
const char *value, size_t size, int flags);
void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
size_t size);
void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info *fi);
struct fuse_lowlevel_ops_compat25
{
void (*init) (void *userdata);
void (*destroy) (void *userdata);
void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
void (*getattr) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info *fi);
void (*readlink) (fuse_req_t req, fuse_ino_t ino);
void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, dev_t rdev);
void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode);
void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
const char *name);
void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
fuse_ino_t newparent, const char *newname);
void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
const char *newname);
void (*open) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi);
void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info *fi);
void (*flush) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*release) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi);
void (*opendir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi);
void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi);
void (*statfs) (fuse_req_t req);
void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
const char *value, size_t size, int flags);
void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
size_t size);
void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info *fi);
};
struct fuse_session *fuse_lowlevel_new_compat25(struct fuse_args *args,
const struct fuse_lowlevel_ops_compat25 *op,
size_t op_size, void *userdata);
const struct fuse_lowlevel_ops_compat25 *op,
size_t op_size, void *userdata);
size_t fuse_dirent_size(size_t namelen);
@ -76,58 +77,59 @@ char *fuse_add_dirent(char *buf, const char *name, const struct stat *stbuf,
#include <sys/statfs.h>
struct fuse_lowlevel_ops_compat {
void (*init) (void *userdata);
void (*destroy) (void *userdata);
void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
void (*getattr) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info_compat *fi);
void (*readlink) (fuse_req_t req, fuse_ino_t ino);
void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, dev_t rdev);
void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode);
void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
const char *name);
void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
fuse_ino_t newparent, const char *newname);
void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
const char *newname);
void (*open) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info_compat *fi);
void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info_compat *fi);
void (*flush) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*release) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info_compat *fi);
void (*opendir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info_compat *fi);
void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info_compat *fi);
void (*statfs) (fuse_req_t req);
void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
const char *value, size_t size, int flags);
void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
size_t size);
void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info_compat *fi);
struct fuse_lowlevel_ops_compat
{
void (*init) (void *userdata);
void (*destroy) (void *userdata);
void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
void (*getattr) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info_compat *fi);
void (*readlink) (fuse_req_t req, fuse_ino_t ino);
void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, dev_t rdev);
void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode);
void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
const char *name);
void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
fuse_ino_t newparent, const char *newname);
void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
const char *newname);
void (*open) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info_compat *fi);
void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info_compat *fi);
void (*flush) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*release) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info_compat *fi);
void (*opendir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info_compat *fi);
void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info_compat *fi);
void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info_compat *fi);
void (*statfs) (fuse_req_t req);
void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
const char *value, size_t size, int flags);
void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
size_t size);
void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info_compat *fi);
};
int fuse_reply_statfs_compat(fuse_req_t req, const struct statfs *stbuf);
@ -136,16 +138,16 @@ int fuse_reply_open_compat(fuse_req_t req,
const struct fuse_file_info_compat *fi);
struct fuse_session *fuse_lowlevel_new_compat(const char *opts,
const struct fuse_lowlevel_ops_compat *op,
size_t op_size, void *userdata);
const struct fuse_lowlevel_ops_compat *op,
size_t op_size, void *userdata);
#endif /* __FreeBSD__ || __NetBSD__ */
struct fuse_chan_ops_compat24 {
int (*receive)(struct fuse_chan *ch, char *buf, size_t size);
int (*send)(struct fuse_chan *ch, const struct iovec iov[],
size_t count);
void (*destroy)(struct fuse_chan *ch);
int (*receive)(struct fuse_chan *ch, char *buf, size_t size);
int (*send)(struct fuse_chan *ch, const struct iovec iov[],
size_t count);
void (*destroy)(struct fuse_chan *ch);
};
struct fuse_chan *fuse_chan_new_compat24(struct fuse_chan_ops_compat24 *op,

434
libfuse/include/fuse_opt.h
View File

@ -18,250 +18,252 @@
extern "C" {
#endif
/**
* Option description
*
* This structure describes a single option, and action associated
* with it, in case it matches.
*
* More than one such match may occur, in which case the action for
* each match is executed.
*
* There are three possible actions in case of a match:
*
* i) An integer (int or unsigned) variable determined by 'offset' is
* set to 'value'
*
* ii) The processing function is called, with 'value' as the key
*
* iii) An integer (any) or string (char *) variable determined by
* 'offset' is set to the value of an option parameter
*
* 'offset' should normally be either set to
*
* - 'offsetof(struct foo, member)' actions i) and iii)
*
* - -1 action ii)
*
* The 'offsetof()' macro is defined in the <stddef.h> header.
*
* The template determines which options match, and also have an
* effect on the action. Normally the action is either i) or ii), but
* if a format is present in the template, then action iii) is
* performed.
*
* The types of templates are:
*
* 1) "-x", "-foo", "--foo", "--foo-bar", etc. These match only
* themselves. Invalid values are "--" and anything beginning
* with "-o"
*
* 2) "foo", "foo-bar", etc. These match "-ofoo", "-ofoo-bar" or
* the relevant option in a comma separated option list
*
* 3) "bar=", "--foo=", etc. These are variations of 1) and 2)
* which have a parameter
*
* 4) "bar=%s", "--foo=%lu", etc. Same matching as above but perform
* action iii).
*
* 5) "-x ", etc. Matches either "-xparam" or "-x param" as
* two separate arguments
*
* 6) "-x %s", etc. Combination of 4) and 5)
*
* If the format is "%s", memory is allocated for the string unlike
* with scanf().
*/
struct fuse_opt {
/** Matching template and optional parameter formatting */
const char *templ;
/**
* Option description
*
* This structure describes a single option, and action associated
* with it, in case it matches.
*
* More than one such match may occur, in which case the action for
* each match is executed.
*
* There are three possible actions in case of a match:
*
* i) An integer (int or unsigned) variable determined by 'offset' is
* set to 'value'
*
* ii) The processing function is called, with 'value' as the key
*
* iii) An integer (any) or string (char *) variable determined by
* 'offset' is set to the value of an option parameter
*
* 'offset' should normally be either set to
*
* - 'offsetof(struct foo, member)' actions i) and iii)
*
* - -1 action ii)
*
* The 'offsetof()' macro is defined in the <stddef.h> header.
*
* The template determines which options match, and also have an
* effect on the action. Normally the action is either i) or ii), but
* if a format is present in the template, then action iii) is
* performed.
*
* The types of templates are:
*
* 1) "-x", "-foo", "--foo", "--foo-bar", etc. These match only
* themselves. Invalid values are "--" and anything beginning
* with "-o"
*
* 2) "foo", "foo-bar", etc. These match "-ofoo", "-ofoo-bar" or
* the relevant option in a comma separated option list
*
* 3) "bar=", "--foo=", etc. These are variations of 1) and 2)
* which have a parameter
*
* 4) "bar=%s", "--foo=%lu", etc. Same matching as above but perform
* action iii).
*
* 5) "-x ", etc. Matches either "-xparam" or "-x param" as
* two separate arguments
*
* 6) "-x %s", etc. Combination of 4) and 5)
*
* If the format is "%s", memory is allocated for the string unlike
* with scanf().
*/
struct fuse_opt
{
/** Matching template and optional parameter formatting */
const char *templ;
/**
* Offset of variable within 'data' parameter of fuse_opt_parse()
* or -1
*/
unsigned long offset;
/**
* Offset of variable within 'data' parameter of fuse_opt_parse()
* or -1
*/
unsigned long offset;
/**
* Value to set the variable to, or to be passed as 'key' to the
* processing function. Ignored if template has a format
*/
int value;
};
/**
* Value to set the variable to, or to be passed as 'key' to the
* processing function. Ignored if template has a format
*/
int value;
};
/**
* Key option. In case of a match, the processing function will be
* called with the specified key.
*/
/**
* Key option. In case of a match, the processing function will be
* called with the specified key.
*/
#define FUSE_OPT_KEY(templ, key) { templ, -1U, key }
/**
* Last option. An array of 'struct fuse_opt' must end with a NULL
* template value
*/
/**
* Last option. An array of 'struct fuse_opt' must end with a NULL
* template value
*/
#define FUSE_OPT_END { NULL, 0, 0 }
/**
* Argument list
*/
struct fuse_args {
/** Argument count */
int argc;
/**
* Argument list
*/
struct fuse_args
{
/** Argument count */
int argc;
/** Argument vector. NULL terminated */
char **argv;
/** Argument vector. NULL terminated */
char **argv;
/** Is 'argv' allocated? */
int allocated;
};
/** Is 'argv' allocated? */
int allocated;
};
/**
* Initializer for 'struct fuse_args'
*/
/**
* Initializer for 'struct fuse_args'
*/
#define FUSE_ARGS_INIT(argc, argv) { argc, argv, 0 }
/**
* Key value passed to the processing function if an option did not
* match any template
*/
/**
* Key value passed to the processing function if an option did not
* match any template
*/
#define FUSE_OPT_KEY_OPT -1
/**
* Key value passed to the processing function for all non-options
*
* Non-options are the arguments beginning with a character other than
* '-' or all arguments after the special '--' option
*/
/**
* Key value passed to the processing function for all non-options
*
* Non-options are the arguments beginning with a character other than
* '-' or all arguments after the special '--' option
*/
#define FUSE_OPT_KEY_NONOPT -2
/**
* Special key value for options to keep
*
* Argument is not passed to processing function, but behave as if the
* processing function returned 1
*/
/**
* Special key value for options to keep
*
* Argument is not passed to processing function, but behave as if the
* processing function returned 1
*/
#define FUSE_OPT_KEY_KEEP -3
/**
* Special key value for options to discard
*
* Argument is not passed to processing function, but behave as if the
* processing function returned zero
*/
/**
* Special key value for options to discard
*
* Argument is not passed to processing function, but behave as if the
* processing function returned zero
*/
#define FUSE_OPT_KEY_DISCARD -4
/**
* Processing function
*
* This function is called if
* - option did not match any 'struct fuse_opt'
* - argument is a non-option
* - option did match and offset was set to -1
*
* The 'arg' parameter will always contain the whole argument or
* option including the parameter if exists. A two-argument option
* ("-x foo") is always converted to single argument option of the
* form "-xfoo" before this function is called.
*
* Options of the form '-ofoo' are passed to this function without the
* '-o' prefix.
*
* The return value of this function determines whether this argument
* is to be inserted into the output argument vector, or discarded.
*
* @param data is the user data passed to the fuse_opt_parse() function
* @param arg is the whole argument or option
* @param key determines why the processing function was called
* @param outargs the current output argument list
* @return -1 on error, 0 if arg is to be discarded, 1 if arg should be kept
*/
typedef int (*fuse_opt_proc_t)(void *data, const char *arg, int key,
struct fuse_args *outargs);
/**
* Processing function
*
* This function is called if
* - option did not match any 'struct fuse_opt'
* - argument is a non-option
* - option did match and offset was set to -1
*
* The 'arg' parameter will always contain the whole argument or
* option including the parameter if exists. A two-argument option
* ("-x foo") is always converted to single argument option of the
* form "-xfoo" before this function is called.
*
* Options of the form '-ofoo' are passed to this function without the
* '-o' prefix.
*
* The return value of this function determines whether this argument
* is to be inserted into the output argument vector, or discarded.
*
* @param data is the user data passed to the fuse_opt_parse() function
* @param arg is the whole argument or option
* @param key determines why the processing function was called
* @param outargs the current output argument list
* @return -1 on error, 0 if arg is to be discarded, 1 if arg should be kept
*/
typedef int (*fuse_opt_proc_t)(void *data, const char *arg, int key,
struct fuse_args *outargs);
/**
* Option parsing function
*
* If 'args' was returned from a previous call to fuse_opt_parse() or
* it was constructed from
*
* A NULL 'args' is equivalent to an empty argument vector
*
* A NULL 'opts' is equivalent to an 'opts' array containing a single
* end marker
*
* A NULL 'proc' is equivalent to a processing function always
* returning '1'
*
* @param args is the input and output argument list
* @param data is the user data
* @param opts is the option description array
* @param proc is the processing function
* @return -1 on error, 0 on success
*/
int fuse_opt_parse(struct fuse_args *args, void *data,
const struct fuse_opt opts[], fuse_opt_proc_t proc);
/**
* Option parsing function
*
* If 'args' was returned from a previous call to fuse_opt_parse() or
* it was constructed from
*
* A NULL 'args' is equivalent to an empty argument vector
*
* A NULL 'opts' is equivalent to an 'opts' array containing a single
* end marker
*
* A NULL 'proc' is equivalent to a processing function always
* returning '1'
*
* @param args is the input and output argument list
* @param data is the user data
* @param opts is the option description array
* @param proc is the processing function
* @return -1 on error, 0 on success
*/
int fuse_opt_parse(struct fuse_args *args, void *data,
const struct fuse_opt opts[], fuse_opt_proc_t proc);
/**
* Add an option to a comma separated option list
*
* @param opts is a pointer to an option list, may point to a NULL value
* @param opt is the option to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_add_opt(char **opts, const char *opt);
/**
* Add an option to a comma separated option list
*
* @param opts is a pointer to an option list, may point to a NULL value
* @param opt is the option to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_add_opt(char **opts, const char *opt);
/**
* Add an option, escaping commas, to a comma separated option list
*
* @param opts is a pointer to an option list, may point to a NULL value
* @param opt is the option to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_add_opt_escaped(char **opts, const char *opt);
/**
* Add an option, escaping commas, to a comma separated option list
*
* @param opts is a pointer to an option list, may point to a NULL value
* @param opt is the option to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_add_opt_escaped(char **opts, const char *opt);
/**
* Add an argument to a NULL terminated argument vector
*
* @param args is the structure containing the current argument list
* @param arg is the new argument to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_add_arg(struct fuse_args *args, const char *arg);
/**
* Add an argument to a NULL terminated argument vector
*
* @param args is the structure containing the current argument list
* @param arg is the new argument to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_add_arg(struct fuse_args *args, const char *arg);
/**
* Add an argument at the specified position in a NULL terminated
* argument vector
*
* Adds the argument to the N-th position. This is useful for adding
* options at the beginning of the array which must not come after the
* special '--' option.
*
* @param args is the structure containing the current argument list
* @param pos is the position at which to add the argument
* @param arg is the new argument to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_insert_arg(struct fuse_args *args, int pos, const char *arg);
/**
* Add an argument at the specified position in a NULL terminated
* argument vector
*
* Adds the argument to the N-th position. This is useful for adding
* options at the beginning of the array which must not come after the
* special '--' option.
*
* @param args is the structure containing the current argument list
* @param pos is the position at which to add the argument
* @param arg is the new argument to add
* @return -1 on allocation error, 0 on success
*/
int fuse_opt_insert_arg(struct fuse_args *args, int pos, const char *arg);
/**
* Free the contents of argument list
*
* The structure itself is not freed
*
* @param args is the structure containing the argument list
*/
void fuse_opt_free_args(struct fuse_args *args);
/**
* Free the contents of argument list
*
* The structure itself is not freed
*
* @param args is the structure containing the argument list
*/
void fuse_opt_free_args(struct fuse_args *args);
/**
* Check if an option matches
*
* @param opts is the option description array
* @param opt is the option to match
* @return 1 if a match is found, 0 if not
*/
int fuse_opt_match(const struct fuse_opt opts[], const char *opt);
/**
* Check if an option matches
*
* @param opts is the option description array
* @param opt is the option to match
* @return 1 if a match is found, 0 if not
*/
int fuse_opt_match(const struct fuse_opt opts[], const char *opt);
#ifdef __cplusplus
}

10
libfuse/include/fuse_timeouts.h
View File

@ -0,0 +1,10 @@
#pragma once
#include <stdint.h>
typedef struct fuse_timeouts_s fuse_timeouts_t;
struct fuse_timeouts_s
{
uint64_t entry;
uint64_t attr;
};

476
libfuse/lib/buffer.c
View File

@ -18,140 +18,140 @@
size_t fuse_buf_size(const struct fuse_bufvec *bufv)
{
size_t i;
size_t size = 0;
size_t i;
size_t size = 0;
for (i = 0; i < bufv->count; i++) {
if (bufv->buf[i].size == SIZE_MAX)
size = SIZE_MAX;
else
size += bufv->buf[i].size;
}
for (i = 0; i < bufv->count; i++) {
if (bufv->buf[i].size == SIZE_MAX)
size = SIZE_MAX;
else
size += bufv->buf[i].size;
}
return size;
return size;
}
static size_t min_size(size_t s1, size_t s2)
{
return s1 < s2 ? s1 : s2;
return s1 < s2 ? s1 : s2;
}
static ssize_t fuse_buf_write(const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len)
{
ssize_t res = 0;
size_t copied = 0;
while (len) {
if (dst->flags & FUSE_BUF_FD_SEEK) {
res = pwrite(dst->fd, src->mem + src_off, len,
dst->pos + dst_off);
} else {
res = write(dst->fd, src->mem + src_off, len);
}
if (res == -1) {
if (!copied)
return -errno;
break;
}
if (res == 0)
break;
copied += res;
if (!(dst->flags & FUSE_BUF_FD_RETRY))
break;
src_off += res;
dst_off += res;
len -= res;
}
return copied;
ssize_t res = 0;
size_t copied = 0;
while (len) {
if (dst->flags & FUSE_BUF_FD_SEEK) {
res = pwrite(dst->fd, src->mem + src_off, len,
dst->pos + dst_off);
} else {
res = write(dst->fd, src->mem + src_off, len);
}
if (res == -1) {
if (!copied)
return -errno;
break;
}
if (res == 0)
break;
copied += res;
if (!(dst->flags & FUSE_BUF_FD_RETRY))
break;
src_off += res;
dst_off += res;
len -= res;
}
return copied;
}
static ssize_t fuse_buf_read(const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len)
{
ssize_t res = 0;
size_t copied = 0;
while (len) {
if (src->flags & FUSE_BUF_FD_SEEK) {
res = pread(src->fd, dst->mem + dst_off, len,
src->pos + src_off);
} else {
res = read(src->fd, dst->mem + dst_off, len);
}
if (res == -1) {
if (!copied)
return -errno;
break;
}
if (res == 0)
break;
copied += res;
if (!(src->flags & FUSE_BUF_FD_RETRY))
break;
dst_off += res;
src_off += res;
len -= res;
}
return copied;
ssize_t res = 0;
size_t copied = 0;
while (len) {
if (src->flags & FUSE_BUF_FD_SEEK) {
res = pread(src->fd, dst->mem + dst_off, len,
src->pos + src_off);
} else {
res = read(src->fd, dst->mem + dst_off, len);
}
if (res == -1) {
if (!copied)
return -errno;
break;
}
if (res == 0)
break;
copied += res;
if (!(src->flags & FUSE_BUF_FD_RETRY))
break;
dst_off += res;
src_off += res;
len -= res;
}
return copied;
}
static ssize_t fuse_buf_fd_to_fd(const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len)
{
char buf[4096];
struct fuse_buf tmp = {
.size = sizeof(buf),
.flags = 0,
};
ssize_t res;
size_t copied = 0;
tmp.mem = buf;
while (len) {
size_t this_len = min_size(tmp.size, len);
size_t read_len;
res = fuse_buf_read(&tmp, 0, src, src_off, this_len);
if (res < 0) {
if (!copied)
return res;
break;
}
if (res == 0)
break;
read_len = res;
res = fuse_buf_write(dst, dst_off, &tmp, 0, read_len);
if (res < 0) {
if (!copied)
return res;
break;
}
if (res == 0)
break;
copied += res;
if (res < this_len)
break;
dst_off += res;
src_off += res;
len -= res;
}
return copied;
char buf[4096];
struct fuse_buf tmp = {
.size = sizeof(buf),
.flags = 0,
};
ssize_t res;
size_t copied = 0;
tmp.mem = buf;
while (len) {
size_t this_len = min_size(tmp.size, len);
size_t read_len;
res = fuse_buf_read(&tmp, 0, src, src_off, this_len);
if (res < 0) {
if (!copied)
return res;
break;
}
if (res == 0)
break;
read_len = res;
res = fuse_buf_write(dst, dst_off, &tmp, 0, read_len);
if (res < 0) {
if (!copied)
return res;
break;
}
if (res == 0)
break;
copied += res;
if (res < this_len)
break;
dst_off += res;
src_off += res;
len -= res;
}
return copied;
}
#ifdef HAVE_SPLICE
@ -159,64 +159,64 @@ static ssize_t fuse_buf_splice(const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len, enum fuse_buf_copy_flags flags)
{
int splice_flags = 0;
off_t *srcpos = NULL;
off_t *dstpos = NULL;
off_t srcpos_val;
off_t dstpos_val;
ssize_t res;
size_t copied = 0;
if (flags & FUSE_BUF_SPLICE_MOVE)
splice_flags |= SPLICE_F_MOVE;
if (flags & FUSE_BUF_SPLICE_NONBLOCK)
splice_flags |= SPLICE_F_NONBLOCK;
if (src->flags & FUSE_BUF_FD_SEEK) {
srcpos_val = src->pos + src_off;
srcpos = &srcpos_val;
}
if (dst->flags & FUSE_BUF_FD_SEEK) {
dstpos_val = dst->pos + dst_off;
dstpos = &dstpos_val;
}
while (len) {
res = splice(src->fd, srcpos, dst->fd, dstpos, len,
splice_flags);
if (res == -1) {
if (copied)
break;
if (errno != EINVAL || (flags & FUSE_BUF_FORCE_SPLICE))
return -errno;
/* Maybe splice is not supported for this combination */
return fuse_buf_fd_to_fd(dst, dst_off, src, src_off,
len);
}
if (res == 0)
break;
copied += res;
if (!(src->flags & FUSE_BUF_FD_RETRY) &&
!(dst->flags & FUSE_BUF_FD_RETRY)) {
break;
}
len -= res;
}
return copied;
int splice_flags = 0;
off_t *srcpos = NULL;
off_t *dstpos = NULL;
off_t srcpos_val;
off_t dstpos_val;
ssize_t res;
size_t copied = 0;
if (flags & FUSE_BUF_SPLICE_MOVE)
splice_flags |= SPLICE_F_MOVE;
if (flags & FUSE_BUF_SPLICE_NONBLOCK)
splice_flags |= SPLICE_F_NONBLOCK;
if (src->flags & FUSE_BUF_FD_SEEK) {
srcpos_val = src->pos + src_off;
srcpos = &srcpos_val;
}
if (dst->flags & FUSE_BUF_FD_SEEK) {
dstpos_val = dst->pos + dst_off;
dstpos = &dstpos_val;
}
while (len) {
res = splice(src->fd, srcpos, dst->fd, dstpos, len,
splice_flags);
if (res == -1) {
if (copied)
break;
if (errno != EINVAL || (flags & FUSE_BUF_FORCE_SPLICE))
return -errno;
/* Maybe splice is not supported for this combination */
return fuse_buf_fd_to_fd(dst, dst_off, src, src_off,
len);
}
if (res == 0)
break;
copied += res;
if (!(src->flags & FUSE_BUF_FD_RETRY) &&
!(dst->flags & FUSE_BUF_FD_RETRY)) {
break;
}
len -= res;
}
return copied;
}
#else
static ssize_t fuse_buf_splice(const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len, enum fuse_buf_copy_flags flags)
{
(void) flags;
(void) flags;
return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
}
#endif
@ -225,94 +225,94 @@ static ssize_t fuse_buf_copy_one(const struct fuse_buf *dst, size_t dst_off,
const struct fuse_buf *src, size_t src_off,
size_t len, enum fuse_buf_copy_flags flags)
{
int src_is_fd = src->flags & FUSE_BUF_IS_FD;
int dst_is_fd = dst->flags & FUSE_BUF_IS_FD;
if (!src_is_fd && !dst_is_fd) {
char *dstmem = dst->mem + dst_off;
char *srcmem = src->mem + src_off;
if (dstmem != srcmem) {
if (dstmem + len <= srcmem || srcmem + len <= dstmem)
memcpy(dstmem, srcmem, len);
else
memmove(dstmem, srcmem, len);
}
return len;
} else if (!src_is_fd) {
return fuse_buf_write(dst, dst_off, src, src_off, len);
} else if (!dst_is_fd) {
return fuse_buf_read(dst, dst_off, src, src_off, len);
} else if (flags & FUSE_BUF_NO_SPLICE) {
return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
} else {
return fuse_buf_splice(dst, dst_off, src, src_off, len, flags);
}
int src_is_fd = src->flags & FUSE_BUF_IS_FD;
int dst_is_fd = dst->flags & FUSE_BUF_IS_FD;
if (!src_is_fd && !dst_is_fd) {
char *dstmem = dst->mem + dst_off;
char *srcmem = src->mem + src_off;
if (dstmem != srcmem) {
if (dstmem + len <= srcmem || srcmem + len <= dstmem)
memcpy(dstmem, srcmem, len);
else
memmove(dstmem, srcmem, len);
}
return len;
} else if (!src_is_fd) {
return fuse_buf_write(dst, dst_off, src, src_off, len);
} else if (!dst_is_fd) {
return fuse_buf_read(dst, dst_off, src, src_off, len);
} else if (flags & FUSE_BUF_NO_SPLICE) {
return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
} else {
return fuse_buf_splice(dst, dst_off, src, src_off, len, flags);
}
}
static const struct fuse_buf *fuse_bufvec_current(struct fuse_bufvec *bufv)
{
if (bufv->idx < bufv->count)
return &bufv->buf[bufv->idx];
else
return NULL;
if (bufv->idx < bufv->count)
return &bufv->buf[bufv->idx];
else
return NULL;
}
static int fuse_bufvec_advance(struct fuse_bufvec *bufv, size_t len)
{
const struct fuse_buf *buf = fuse_bufvec_current(bufv);
bufv->off += len;
assert(bufv->off <= buf->size);
if (bufv->off == buf->size) {
assert(bufv->idx < bufv->count);
bufv->idx++;
if (bufv->idx == bufv->count)
return 0;
bufv->off = 0;
}
return 1;
const struct fuse_buf *buf = fuse_bufvec_current(bufv);
bufv->off += len;
assert(bufv->off <= buf->size);
if (bufv->off == buf->size) {
assert(bufv->idx < bufv->count);
bufv->idx++;
if (bufv->idx == bufv->count)
return 0;
bufv->off = 0;
}
return 1;
}
ssize_t fuse_buf_copy(struct fuse_bufvec *dstv, struct fuse_bufvec *srcv,
enum fuse_buf_copy_flags flags)
{
size_t copied = 0;
if (dstv == srcv)
return fuse_buf_size(dstv);
for (;;) {
const struct fuse_buf *src = fuse_bufvec_current(srcv);
const struct fuse_buf *dst = fuse_bufvec_current(dstv);
size_t src_len;
size_t dst_len;
size_t len;
ssize_t res;
if (src == NULL || dst == NULL)
break;
src_len = src->size - srcv->off;
dst_len = dst->size - dstv->off;
len = min_size(src_len, dst_len);
res = fuse_buf_copy_one(dst, dstv->off, src, srcv->off, len, flags);
if (res < 0) {
if (!copied)
return res;
break;
}
copied += res;
if (!fuse_bufvec_advance(srcv, res) ||
!fuse_bufvec_advance(dstv, res))
break;
if (res < len)
break;
}
return copied;
size_t copied = 0;
if (dstv == srcv)
return fuse_buf_size(dstv);
for (;;) {
const struct fuse_buf *src = fuse_bufvec_current(srcv);
const struct fuse_buf *dst = fuse_bufvec_current(dstv);
size_t src_len;
size_t dst_len;
size_t len;
ssize_t res;
if (src == NULL || dst == NULL)
break;
src_len = src->size - srcv->off;
dst_len = dst->size - dstv->off;
len = min_size(src_len, dst_len);
res = fuse_buf_copy_one(dst, dstv->off, src, srcv->off, len, flags);
if (res < 0) {
if (!copied)
return res;
break;
}
copied += res;
if (!fuse_bufvec_advance(srcv, res) ||
!fuse_bufvec_advance(dstv, res))
break;
if (res < len)
break;
}
return copied;
}

508
libfuse/lib/cuse_lowlevel.c
View File

@ -21,127 +21,127 @@
#include <unistd.h>
struct cuse_data {
struct cuse_lowlevel_ops clop;
unsigned max_read;
unsigned dev_major;
unsigned dev_minor;
unsigned flags;
unsigned dev_info_len;
char dev_info[];
struct cuse_lowlevel_ops clop;
unsigned max_read;
unsigned dev_major;
unsigned dev_minor;
unsigned flags;
unsigned dev_info_len;
char dev_info[];
};
static struct cuse_lowlevel_ops *req_clop(fuse_req_t req)
{
return &req->f->cuse_data->clop;
return &req->f->cuse_data->clop;
}
static void cuse_fll_open(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
(void)ino;
req_clop(req)->open(req, fi);
(void)ino;
req_clop(req)->open(req, fi);
}
static void cuse_fll_read(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t off, struct fuse_file_info *fi)
{
(void)ino;
req_clop(req)->read(req, size, off, fi);
(void)ino;
req_clop(req)->read(req, size, off, fi);
}
static void cuse_fll_write(fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info *fi)
{
(void)ino;
req_clop(req)->write(req, buf, size, off, fi);
(void)ino;
req_clop(req)->write(req, buf, size, off, fi);
}
static void cuse_fll_flush(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
(void)ino;
req_clop(req)->flush(req, fi);
(void)ino;
req_clop(req)->flush(req, fi);
}
static void cuse_fll_release(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
(void)ino;
req_clop(req)->release(req, fi);
(void)ino;
req_clop(req)->release(req, fi);
}
static void cuse_fll_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi)
{
(void)ino;
req_clop(req)->fsync(req, datasync, fi);
(void)ino;
req_clop(req)->fsync(req, datasync, fi);
}
static void cuse_fll_ioctl(fuse_req_t req, fuse_ino_t ino, int cmd, void *arg,
struct fuse_file_info *fi, unsigned int flags,
const void *in_buf, size_t in_bufsz, size_t out_bufsz)
struct fuse_file_info *fi, unsigned int flags,
const void *in_buf, size_t in_bufsz, size_t out_bufsz)
{
(void)ino;
req_clop(req)->ioctl(req, cmd, arg, fi, flags, in_buf, in_bufsz,
out_bufsz);
(void)ino;
req_clop(req)->ioctl(req, cmd, arg, fi, flags, in_buf, in_bufsz,
out_bufsz);
}
static void cuse_fll_poll(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi, struct fuse_pollhandle *ph)
{
(void)ino;
req_clop(req)->poll(req, fi, ph);
(void)ino;
req_clop(req)->poll(req, fi, ph);
}
static size_t cuse_pack_info(int argc, const char **argv, char *buf)
{
size_t size = 0;
int i;
size_t size = 0;
int i;
for (i = 0; i < argc; i++) {
size_t len;
for (i = 0; i < argc; i++) {
size_t len;
len = strlen(argv[i]) + 1;
size += len;
if (buf) {
memcpy(buf, argv[i], len);
buf += len;
}
}
len = strlen(argv[i]) + 1;
size += len;
if (buf) {
memcpy(buf, argv[i], len);
buf += len;
}
}
return size;
return size;
}
static struct cuse_data *cuse_prep_data(const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop)
{
struct cuse_data *cd;
size_t dev_info_len;
dev_info_len = cuse_pack_info(ci->dev_info_argc, ci->dev_info_argv,
NULL);
if (dev_info_len > CUSE_INIT_INFO_MAX) {
fprintf(stderr, "cuse: dev_info (%zu) too large, limit=%u\n",
dev_info_len, CUSE_INIT_INFO_MAX);
return NULL;
}
cd = calloc(1, sizeof(*cd) + dev_info_len);
if (!cd) {
fprintf(stderr, "cuse: failed to allocate cuse_data\n");
return NULL;
}
memcpy(&cd->clop, clop, sizeof(cd->clop));
cd->max_read = 131072;
cd->dev_major = ci->dev_major;
cd->dev_minor = ci->dev_minor;
cd->dev_info_len = dev_info_len;
cd->flags = ci->flags;
cuse_pack_info(ci->dev_info_argc, ci->dev_info_argv, cd->dev_info);
return cd;
struct cuse_data *cd;
size_t dev_info_len;
dev_info_len = cuse_pack_info(ci->dev_info_argc, ci->dev_info_argv,
NULL);
if (dev_info_len > CUSE_INIT_INFO_MAX) {
fprintf(stderr, "cuse: dev_info (%zu) too large, limit=%u\n",
dev_info_len, CUSE_INIT_INFO_MAX);
return NULL;
}
cd = calloc(1, sizeof(*cd) + dev_info_len);
if (!cd) {
fprintf(stderr, "cuse: failed to allocate cuse_data\n");
return NULL;
}
memcpy(&cd->clop, clop, sizeof(cd->clop));
cd->max_read = 131072;
cd->dev_major = ci->dev_major;
cd->dev_minor = ci->dev_minor;
cd->dev_info_len = dev_info_len;
cd->flags = ci->flags;
cuse_pack_info(ci->dev_info_argc, ci->dev_info_argv, cd->dev_info);
return cd;
}
struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
@ -149,118 +149,118 @@ struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
const struct cuse_lowlevel_ops *clop,
void *userdata)
{
struct fuse_lowlevel_ops lop;
struct cuse_data *cd;
struct fuse_session *se;
struct fuse_ll *ll;
cd = cuse_prep_data(ci, clop);
if (!cd)
return NULL;
memset(&lop, 0, sizeof(lop));
lop.init = clop->init;
lop.destroy = clop->destroy;
lop.open = clop->open ? cuse_fll_open : NULL;
lop.read = clop->read ? cuse_fll_read : NULL;
lop.write = clop->write ? cuse_fll_write : NULL;
lop.flush = clop->flush ? cuse_fll_flush : NULL;
lop.release = clop->release ? cuse_fll_release : NULL;
lop.fsync = clop->fsync ? cuse_fll_fsync : NULL;
lop.ioctl = clop->ioctl ? cuse_fll_ioctl : NULL;
lop.poll = clop->poll ? cuse_fll_poll : NULL;
se = fuse_lowlevel_new_common(args, &lop, sizeof(lop), userdata);
if (!se) {
free(cd);
return NULL;
}
ll = se->data;
ll->cuse_data = cd;
return se;
struct fuse_lowlevel_ops lop;
struct cuse_data *cd;
struct fuse_session *se;
struct fuse_ll *ll;
cd = cuse_prep_data(ci, clop);
if (!cd)
return NULL;
memset(&lop, 0, sizeof(lop));
lop.init = clop->init;
lop.destroy = clop->destroy;
lop.open = clop->open ? cuse_fll_open : NULL;
lop.read = clop->read ? cuse_fll_read : NULL;
lop.write = clop->write ? cuse_fll_write : NULL;
lop.flush = clop->flush ? cuse_fll_flush : NULL;
lop.release = clop->release ? cuse_fll_release : NULL;
lop.fsync = clop->fsync ? cuse_fll_fsync : NULL;
lop.ioctl = clop->ioctl ? cuse_fll_ioctl : NULL;
lop.poll = clop->poll ? cuse_fll_poll : NULL;
se = fuse_lowlevel_new_common(args, &lop, sizeof(lop), userdata);
if (!se) {
free(cd);
return NULL;
}
ll = se->data;
ll->cuse_data = cd;
return se;
}
static int cuse_reply_init(fuse_req_t req, struct cuse_init_out *arg,
char *dev_info, unsigned dev_info_len)
{
struct iovec iov[3];
struct iovec iov[3];
iov[1].iov_base = arg;
iov[1].iov_len = sizeof(struct cuse_init_out);
iov[2].iov_base = dev_info;
iov[2].iov_len = dev_info_len;
iov[1].iov_base = arg;
iov[1].iov_len = sizeof(struct cuse_init_out);
iov[2].iov_base = dev_info;
iov[2].iov_len = dev_info_len;
return fuse_send_reply_iov_nofree(req, 0, iov, 3);
return fuse_send_reply_iov_nofree(req, 0, iov, 3);
}
void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
{
struct fuse_init_in *arg = (struct fuse_init_in *) inarg;
struct cuse_init_out outarg;
struct fuse_ll *f = req->f;
struct cuse_data *cd = f->cuse_data;
size_t bufsize = fuse_chan_bufsize(req->ch);
struct cuse_lowlevel_ops *clop = req_clop(req);
(void) nodeid;
if (f->debug) {
fprintf(stderr, "CUSE_INIT: %u.%u\n", arg->major, arg->minor);
fprintf(stderr, "flags=0x%08x\n", arg->flags);
}
f->conn.proto_major = arg->major;
f->conn.proto_minor = arg->minor;
f->conn.capable = 0;
f->conn.want = 0;
if (arg->major < 7) {
fprintf(stderr, "cuse: unsupported protocol version: %u.%u\n",
arg->major, arg->minor);
fuse_reply_err(req, EPROTO);
return;
}
if (bufsize < FUSE_MIN_READ_BUFFER) {
fprintf(stderr, "cuse: warning: buffer size too small: %zu\n",
bufsize);
bufsize = FUSE_MIN_READ_BUFFER;
}
bufsize -= 4096;
if (bufsize < f->conn.max_write)
f->conn.max_write = bufsize;
f->got_init = 1;
if (f->op.init)
f->op.init(f->userdata, &f->conn);
memset(&outarg, 0, sizeof(outarg));
outarg.major = FUSE_KERNEL_VERSION;
outarg.minor = FUSE_KERNEL_MINOR_VERSION;
outarg.flags = cd->flags;
outarg.max_read = cd->max_read;
outarg.max_write = f->conn.max_write;
outarg.dev_major = cd->dev_major;
outarg.dev_minor = cd->dev_minor;
if (f->debug) {
fprintf(stderr, " CUSE_INIT: %u.%u\n",
outarg.major, outarg.minor);
fprintf(stderr, " flags=0x%08x\n", outarg.flags);
fprintf(stderr, " max_read=0x%08x\n", outarg.max_read);
fprintf(stderr, " max_write=0x%08x\n", outarg.max_write);
fprintf(stderr, " dev_major=%u\n", outarg.dev_major);
fprintf(stderr, " dev_minor=%u\n", outarg.dev_minor);
fprintf(stderr, " dev_info: %.*s\n", cd->dev_info_len,
cd->dev_info);
}
cuse_reply_init(req, &outarg, cd->dev_info, cd->dev_info_len);
if (clop->init_done)
clop->init_done(f->userdata);
fuse_free_req(req);
struct fuse_init_in *arg = (struct fuse_init_in *) inarg;
struct cuse_init_out outarg;
struct fuse_ll *f = req->f;
struct cuse_data *cd = f->cuse_data;
size_t bufsize = fuse_chan_bufsize(req->ch);
struct cuse_lowlevel_ops *clop = req_clop(req);
(void) nodeid;
if (f->debug) {
fprintf(stderr, "CUSE_INIT: %u.%u\n", arg->major, arg->minor);
fprintf(stderr, "flags=0x%08x\n", arg->flags);
}
f->conn.proto_major = arg->major;
f->conn.proto_minor = arg->minor;
f->conn.capable = 0;
f->conn.want = 0;
if (arg->major < 7) {
fprintf(stderr, "cuse: unsupported protocol version: %u.%u\n",
arg->major, arg->minor);
fuse_reply_err(req, EPROTO);
return;
}
if (bufsize < FUSE_MIN_READ_BUFFER) {
fprintf(stderr, "cuse: warning: buffer size too small: %zu\n",
bufsize);
bufsize = FUSE_MIN_READ_BUFFER;
}
bufsize -= 4096;
if (bufsize < f->conn.max_write)
f->conn.max_write = bufsize;
f->got_init = 1;
if (f->op.init)
f->op.init(f->userdata, &f->conn);
memset(&outarg, 0, sizeof(outarg));
outarg.major = FUSE_KERNEL_VERSION;
outarg.minor = FUSE_KERNEL_MINOR_VERSION;
outarg.flags = cd->flags;
outarg.max_read = cd->max_read;
outarg.max_write = f->conn.max_write;
outarg.dev_major = cd->dev_major;
outarg.dev_minor = cd->dev_minor;
if (f->debug) {
fprintf(stderr, " CUSE_INIT: %u.%u\n",
outarg.major, outarg.minor);
fprintf(stderr, " flags=0x%08x\n", outarg.flags);
fprintf(stderr, " max_read=0x%08x\n", outarg.max_read);
fprintf(stderr, " max_write=0x%08x\n", outarg.max_write);
fprintf(stderr, " dev_major=%u\n", outarg.dev_major);
fprintf(stderr, " dev_minor=%u\n", outarg.dev_minor);
fprintf(stderr, " dev_info: %.*s\n", cd->dev_info_len,
cd->dev_info);
}
cuse_reply_init(req, &outarg, cd->dev_info, cd->dev_info_len);
if (clop->init_done)
clop->init_done(f->userdata);
fuse_free_req(req);
}
struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
@ -268,104 +268,104 @@ struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
const struct cuse_lowlevel_ops *clop,
int *multithreaded, void *userdata)
{
const char *devname = "/dev/cuse";
static const struct fuse_opt kill_subtype_opts[] = {
FUSE_OPT_KEY("subtype=", FUSE_OPT_KEY_DISCARD),
FUSE_OPT_END
};
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
struct fuse_session *se;
struct fuse_chan *ch;
int fd;
int foreground;
int res;
res = fuse_parse_cmdline(&args, NULL, multithreaded, &foreground);
if (res == -1)
goto err_args;
res = fuse_opt_parse(&args, NULL, kill_subtype_opts, NULL);
if (res == -1)
goto err_args;
/*
* Make sure file descriptors 0, 1 and 2 are open, otherwise chaos
* would ensue.
*/
do {
fd = open("/dev/null", O_RDWR);
if (fd > 2)
close(fd);
} while (fd >= 0 && fd <= 2);
se = cuse_lowlevel_new(&args, ci, clop, userdata);
fuse_opt_free_args(&args);
if (se == NULL)
goto err_args;
fd = open(devname, O_RDWR);
if (fd == -1) {
if (errno == ENODEV || errno == ENOENT)
fprintf(stderr, "cuse: device not found, try 'modprobe cuse' first\n");
else
fprintf(stderr, "cuse: failed to open %s: %s\n",
devname, strerror(errno));
goto err_se;
}
ch = fuse_kern_chan_new(fd);
if (!ch) {
close(fd);
goto err_se;
}
fuse_session_add_chan(se, ch);
res = fuse_set_signal_handlers(se);
if (res == -1)
goto err_se;
res = fuse_daemonize(foreground);
if (res == -1)
goto err_sig;
return se;
err_sig:
fuse_remove_signal_handlers(se);
err_se:
fuse_session_destroy(se);
err_args:
fuse_opt_free_args(&args);
return NULL;
const char *devname = "/dev/cuse";
static const struct fuse_opt kill_subtype_opts[] = {
FUSE_OPT_KEY("subtype=", FUSE_OPT_KEY_DISCARD),
FUSE_OPT_END
};
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
struct fuse_session *se;
struct fuse_chan *ch;
int fd;
int foreground;
int res;
res = fuse_parse_cmdline(&args, NULL, multithreaded, &foreground);
if (res == -1)
goto err_args;
res = fuse_opt_parse(&args, NULL, kill_subtype_opts, NULL);
if (res == -1)
goto err_args;
/*
* Make sure file descriptors 0, 1 and 2 are open, otherwise chaos
* would ensue.
*/
do {
fd = open("/dev/null", O_RDWR);
if (fd > 2)
close(fd);
} while (fd >= 0 && fd <= 2);
se = cuse_lowlevel_new(&args, ci, clop, userdata);
fuse_opt_free_args(&args);
if (se == NULL)
goto err_args;
fd = open(devname, O_RDWR);
if (fd == -1) {
if (errno == ENODEV || errno == ENOENT)
fprintf(stderr, "cuse: device not found, try 'modprobe cuse' first\n");
else
fprintf(stderr, "cuse: failed to open %s: %s\n",
devname, strerror(errno));
goto err_se;
}
ch = fuse_kern_chan_new(fd);
if (!ch) {
close(fd);
goto err_se;
}
fuse_session_add_chan(se, ch);
res = fuse_set_signal_handlers(se);
if (res == -1)
goto err_se;
res = fuse_daemonize(foreground);
if (res == -1)
goto err_sig;
return se;
err_sig:
fuse_remove_signal_handlers(se);
err_se:
fuse_session_destroy(se);
err_args:
fuse_opt_free_args(&args);
return NULL;
}
void cuse_lowlevel_teardown(struct fuse_session *se)
{
fuse_remove_signal_handlers(se);
fuse_session_destroy(se);
fuse_remove_signal_handlers(se);
fuse_session_destroy(se);
}
int cuse_lowlevel_main(int argc, char *argv[], const struct cuse_info *ci,
const struct cuse_lowlevel_ops *clop, void *userdata)
{
struct fuse_session *se;
int multithreaded;
int res;
struct fuse_session *se;
int multithreaded;
int res;
se = cuse_lowlevel_setup(argc, argv, ci, clop, &multithreaded,
userdata);
if (se == NULL)
return 1;
se = cuse_lowlevel_setup(argc, argv, ci, clop, &multithreaded,
userdata);
if (se == NULL)
return 1;
if (multithreaded)
res = fuse_session_loop_mt(se, 0);
else
res = fuse_session_loop(se);
if (multithreaded)
res = fuse_session_loop_mt(se, 0);
else
res = fuse_session_loop(se);
cuse_lowlevel_teardown(se);
if (res == -1)
return 1;
cuse_lowlevel_teardown(se);
if (res == -1)
return 1;
return 0;
return 0;
}

4961
libfuse/lib/fuse.c
File diff suppressed because it is too large
View File

140
libfuse/lib/fuse_i.h
View File

@ -12,85 +12,89 @@
struct fuse_chan;
struct fuse_ll;
struct fuse_session {
struct fuse_session_ops op;
struct fuse_session
{
struct fuse_session_ops op;
int (*receive_buf)(struct fuse_session *se, struct fuse_buf *buf,
struct fuse_chan **chp);
int (*receive_buf)(struct fuse_session *se, struct fuse_buf *buf,
struct fuse_chan **chp);
void (*process_buf)(void *data, const struct fuse_buf *buf,
struct fuse_chan *ch);
void (*process_buf)(void *data, const struct fuse_buf *buf,
struct fuse_chan *ch);
void *data;
void *data;
volatile int exited;
volatile int exited;
struct fuse_chan *ch;
struct fuse_chan *ch;
};
struct fuse_req {
struct fuse_ll *f;
uint64_t unique;
int ctr;
pthread_mutex_t lock;
struct fuse_ctx ctx;
struct fuse_chan *ch;
int interrupted;
unsigned int ioctl_64bit : 1;
union {
struct {
uint64_t unique;
} i;
struct {
fuse_interrupt_func_t func;
void *data;
} ni;
} u;
struct fuse_req *next;
struct fuse_req *prev;
struct fuse_req
{
struct fuse_ll *f;
uint64_t unique;
int ctr;
pthread_mutex_t lock;
struct fuse_ctx ctx;
struct fuse_chan *ch;
int interrupted;
unsigned int ioctl_64bit : 1;
union {
struct {
uint64_t unique;
} i;
struct {
fuse_interrupt_func_t func;
void *data;
} ni;
} u;
struct fuse_req *next;
struct fuse_req *prev;
};
struct fuse_notify_req {
uint64_t unique;
void (*reply)(struct fuse_notify_req *, fuse_req_t, fuse_ino_t,
const void *, const struct fuse_buf *);
struct fuse_notify_req *next;
struct fuse_notify_req *prev;
struct fuse_notify_req
{
uint64_t unique;
void (*reply)(struct fuse_notify_req *, fuse_req_t, fuse_ino_t,
const void *, const struct fuse_buf *);
struct fuse_notify_req *next;
struct fuse_notify_req *prev;
};
struct fuse_ll {
int debug;
int allow_root;
int atomic_o_trunc;
int no_remote_posix_lock;
int no_remote_flock;
int big_writes;
int splice_write;
int splice_move;
int splice_read;
int no_splice_write;
int no_splice_move;
int no_splice_read;
struct fuse_lowlevel_ops op;
int got_init;
struct cuse_data *cuse_data;
void *userdata;
uid_t owner;
struct fuse_conn_info conn;
struct fuse_req list;
struct fuse_req interrupts;
pthread_mutex_t lock;
int got_destroy;
pthread_key_t pipe_key;
int broken_splice_nonblock;
uint64_t notify_ctr;
struct fuse_notify_req notify_list;
struct fuse_ll
{
int debug;
int allow_root;
int no_remote_posix_lock;
int no_remote_flock;
int big_writes;
int splice_write;
int splice_move;
int splice_read;
int no_splice_write;
int no_splice_move;
int no_splice_read;
struct fuse_lowlevel_ops op;
int got_init;
struct cuse_data *cuse_data;
void *userdata;
uid_t owner;
struct fuse_conn_info conn;
struct fuse_req list;
struct fuse_req interrupts;
pthread_mutex_t lock;
int got_destroy;
pthread_key_t pipe_key;
int broken_splice_nonblock;
uint64_t notify_ctr;
struct fuse_notify_req notify_list;
};
struct fuse_cmd {
char *buf;
size_t buflen;
struct fuse_chan *ch;
struct fuse_cmd
{
char *buf;
size_t buflen;
struct fuse_chan *ch;
};
struct fuse *fuse_new_common(struct fuse_chan *ch, struct fuse_args *args,
@ -102,8 +106,8 @@ int fuse_sync_compat_args(struct fuse_args *args);
struct fuse_chan *fuse_kern_chan_new(int fd);
struct fuse_session *fuse_lowlevel_new_common(struct fuse_args *args,
const struct fuse_lowlevel_ops *op,
size_t op_size, void *userdata);
const struct fuse_lowlevel_ops *op,
size_t op_size, void *userdata);
void fuse_kern_unmount_compat22(const char *mountpoint);
int fuse_chan_clearfd(struct fuse_chan *ch);

106
libfuse/lib/fuse_kern_chan.c
View File

@ -18,69 +18,69 @@
static int fuse_kern_chan_receive(struct fuse_chan **chp, char *buf,
size_t size)
{
struct fuse_chan *ch = *chp;
int err;
ssize_t res;
struct fuse_session *se = fuse_chan_session(ch);
assert(se != NULL);
restart:
res = read(fuse_chan_fd(ch), buf, size);
err = errno;
if (fuse_session_exited(se))
return 0;
if (res == -1) {
/* ENOENT means the operation was interrupted, it's safe
to restart */
if (err == ENOENT)
goto restart;
if (err == ENODEV) {
fuse_session_exit(se);
return 0;
}
/* Errors occurring during normal operation: EINTR (read
interrupted), EAGAIN (nonblocking I/O), ENODEV (filesystem
umounted) */
if (err != EINTR && err != EAGAIN)
perror("fuse: reading device");
return -err;
}
if ((size_t) res < sizeof(struct fuse_in_header)) {
fprintf(stderr, "short read on fuse device\n");
return -EIO;
}
return res;
struct fuse_chan *ch = *chp;
int err;
ssize_t res;
struct fuse_session *se = fuse_chan_session(ch);
assert(se != NULL);
restart:
res = read(fuse_chan_fd(ch), buf, size);
err = errno;
if (fuse_session_exited(se))
return 0;
if (res == -1) {
/* ENOENT means the operation was interrupted, it's safe
to restart */
if (err == ENOENT)
goto restart;
if (err == ENODEV) {
fuse_session_exit(se);
return 0;
}
/* Errors occurring during normal operation: EINTR (read
interrupted), EAGAIN (nonblocking I/O), ENODEV (filesystem
umounted) */
if (err != EINTR && err != EAGAIN)
perror("fuse: reading device");
return -err;
}
if ((size_t) res < sizeof(struct fuse_in_header)) {
fprintf(stderr, "short read on fuse device\n");
return -EIO;
}
return res;
}
static int fuse_kern_chan_send(struct fuse_chan *ch, const struct iovec iov[],
size_t count)
{
if (iov) {
ssize_t res = writev(fuse_chan_fd(ch), iov, count);
int err = errno;
if (res == -1) {
struct fuse_session *se = fuse_chan_session(ch);
assert(se != NULL);
/* ENOENT means the operation was interrupted */
if (!fuse_session_exited(se) && err != ENOENT)
perror("fuse: writing device");
return -err;
}
}
return 0;
if (iov) {
ssize_t res = writev(fuse_chan_fd(ch), iov, count);
int err = errno;
if (res == -1) {
struct fuse_session *se = fuse_chan_session(ch);
assert(se != NULL);
/* ENOENT means the operation was interrupted */
if (!fuse_session_exited(se) && err != ENOENT)
perror("fuse: writing device");
return -err;
}
}
return 0;
}
static void fuse_kern_chan_destroy(struct fuse_chan *ch)
{
int fd = fuse_chan_fd(ch);
int fd = fuse_chan_fd(ch);
if (fd != -1)
close(fd);
if (fd != -1)
close(fd);
}
struct fuse_chan *

58
libfuse/lib/fuse_loop.c
View File

@ -14,33 +14,33 @@
int fuse_session_loop(struct fuse_session *se)
{
int res = 0;
struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
size_t bufsize = fuse_chan_bufsize(ch);
char *buf = (char*)calloc(bufsize,1);
if (!buf) {
fprintf(stderr, "fuse: failed to allocate read buffer\n");
return -1;
}
while (!fuse_session_exited(se)) {
struct fuse_chan *tmpch = ch;
struct fuse_buf fbuf = {
.mem = buf,
.size = bufsize,
};
res = fuse_session_receive_buf(se, &fbuf, &tmpch);
if (res == -EINTR)
continue;
if (res <= 0)
break;
fuse_session_process_buf(se, &fbuf, tmpch);
}
free(buf);
fuse_session_reset(se);
return res < 0 ? -1 : 0;
int res = 0;
struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
size_t bufsize = fuse_chan_bufsize(ch);
char *buf = (char*)calloc(bufsize,1);
if (!buf) {
fprintf(stderr, "fuse: failed to allocate read buffer\n");
return -1;
}
while (!fuse_session_exited(se)) {
struct fuse_chan *tmpch = ch;
struct fuse_buf fbuf = {
.mem = buf,
.size = bufsize,
};
res = fuse_session_receive_buf(se, &fbuf, &tmpch);
if (res == -EINTR)
continue;
if (res <= 0)
break;
fuse_session_process_buf(se, &fbuf, tmpch);
}
free(buf);
fuse_session_reset(se);
return res < 0 ? -1 : 0;
}

308
libfuse/lib/fuse_loop_mt.c
View File

@ -25,147 +25,147 @@
#define ENVNAME_THREAD_STACK "FUSE_THREAD_STACK"
struct fuse_worker {
struct fuse_worker *prev;
struct fuse_worker *next;
pthread_t thread_id;
size_t bufsize;
char *buf;
struct fuse_mt *mt;
struct fuse_worker *prev;
struct fuse_worker *next;
pthread_t thread_id;
size_t bufsize;
char *buf;
struct fuse_mt *mt;
};
struct fuse_mt {
struct fuse_session *se;
struct fuse_chan *prevch;
struct fuse_worker main;
sem_t finish;
int exit;
int error;
struct fuse_session *se;
struct fuse_chan *prevch;
struct fuse_worker main;
sem_t finish;
int exit;
int error;
};
static void list_add_worker(struct fuse_worker *w, struct fuse_worker *next)
{
struct fuse_worker *prev = next->prev;
w->next = next;
w->prev = prev;
prev->next = w;
next->prev = w;
struct fuse_worker *prev = next->prev;
w->next = next;
w->prev = prev;
prev->next = w;
next->prev = w;
}
static void list_del_worker(struct fuse_worker *w)
{
struct fuse_worker *prev = w->prev;
struct fuse_worker *next = w->next;
prev->next = next;
next->prev = prev;
struct fuse_worker *prev = w->prev;
struct fuse_worker *next = w->next;
prev->next = next;
next->prev = prev;
}
static int fuse_loop_start_thread(struct fuse_mt *mt);
static void *fuse_do_work(void *data)
{
struct fuse_worker *w = (struct fuse_worker *) data;
struct fuse_mt *mt = w->mt;
while (!fuse_session_exited(mt->se)) {
struct fuse_chan *ch = mt->prevch;
struct fuse_buf fbuf = {
.mem = w->buf,
.size = w->bufsize,
};
int res;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
res = fuse_session_receive_buf(mt->se, &fbuf, &ch);
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
if (res == -EINTR)
continue;
if (res <= 0) {
if (res < 0) {
fuse_session_exit(mt->se);
mt->error = -1;
}
break;
}
if (mt->exit)
return NULL;
fuse_session_process_buf(mt->se, &fbuf, ch);
}
sem_post(&mt->finish);
return NULL;
struct fuse_worker *w = (struct fuse_worker *) data;
struct fuse_mt *mt = w->mt;
while (!fuse_session_exited(mt->se)) {
struct fuse_chan *ch = mt->prevch;
struct fuse_buf fbuf = {
.mem = w->buf,
.size = w->bufsize,
};
int res;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
res = fuse_session_receive_buf(mt->se, &fbuf, &ch);
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
if (res == -EINTR)
continue;
if (res <= 0) {
if (res < 0) {
fuse_session_exit(mt->se);
mt->error = -1;
}
break;
}
if (mt->exit)
return NULL;
fuse_session_process_buf(mt->se, &fbuf, ch);
}
sem_post(&mt->finish);
return NULL;
}
int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg)
{
sigset_t oldset;
sigset_t newset;
int res;
pthread_attr_t attr;
char *stack_size;
/* Override default stack size */
pthread_attr_init(&attr);
stack_size = getenv(ENVNAME_THREAD_STACK);
if (stack_size && pthread_attr_setstacksize(&attr, atoi(stack_size)))
fprintf(stderr, "fuse: invalid stack size: %s\n", stack_size);
/* Disallow signal reception in worker threads */
sigemptyset(&newset);
sigaddset(&newset, SIGTERM);
sigaddset(&newset, SIGINT);
sigaddset(&newset, SIGHUP);
sigaddset(&newset, SIGQUIT);
pthread_sigmask(SIG_BLOCK, &newset, &oldset);
res = pthread_create(thread_id, &attr, func, arg);
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
pthread_attr_destroy(&attr);
if (res != 0) {
fprintf(stderr, "fuse: error creating thread: %s\n",
strerror(res));
return -1;
}
return 0;
sigset_t oldset;
sigset_t newset;
int res;
pthread_attr_t attr;
char *stack_size;
/* Override default stack size */
pthread_attr_init(&attr);
stack_size = getenv(ENVNAME_THREAD_STACK);
if (stack_size && pthread_attr_setstacksize(&attr, atoi(stack_size)))
fprintf(stderr, "fuse: invalid stack size: %s\n", stack_size);
/* Disallow signal reception in worker threads */
sigemptyset(&newset);
sigaddset(&newset, SIGTERM);
sigaddset(&newset, SIGINT);
sigaddset(&newset, SIGHUP);
sigaddset(&newset, SIGQUIT);
pthread_sigmask(SIG_BLOCK, &newset, &oldset);
res = pthread_create(thread_id, &attr, func, arg);
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
pthread_attr_destroy(&attr);
if (res != 0) {
fprintf(stderr, "fuse: error creating thread: %s\n",
strerror(res));
return -1;
}
return 0;
}
static int fuse_loop_start_thread(struct fuse_mt *mt)
{
int res;
struct fuse_worker *w = malloc(sizeof(struct fuse_worker));
if (!w) {
fprintf(stderr, "fuse: failed to allocate worker structure\n");
return -1;
}
memset(w, 0, sizeof(struct fuse_worker));
w->bufsize = fuse_chan_bufsize(mt->prevch);
w->buf = calloc(w->bufsize,1);
w->mt = mt;
if (!w->buf) {
fprintf(stderr, "fuse: failed to allocate read buffer\n");
free(w);
return -1;
}
res = fuse_start_thread(&w->thread_id, fuse_do_work, w);
if (res == -1) {
free(w->buf);
free(w);
return -1;
}
list_add_worker(w, &mt->main);
return 0;
int res;
struct fuse_worker *w = malloc(sizeof(struct fuse_worker));
if (!w) {
fprintf(stderr, "fuse: failed to allocate worker structure\n");
return -1;
}
memset(w, 0, sizeof(struct fuse_worker));
w->bufsize = fuse_chan_bufsize(mt->prevch);
w->buf = calloc(w->bufsize,1);
w->mt = mt;
if (!w->buf) {
fprintf(stderr, "fuse: failed to allocate read buffer\n");
free(w);
return -1;
}
res = fuse_start_thread(&w->thread_id, fuse_do_work, w);
if (res == -1) {
free(w->buf);
free(w);
return -1;
}
list_add_worker(w, &mt->main);
return 0;
}
static void fuse_join_worker(struct fuse_worker *w)
{
pthread_join(w->thread_id, NULL);
list_del_worker(w);
free(w->buf);
free(w);
pthread_join(w->thread_id, NULL);
list_del_worker(w);
free(w->buf);
free(w);
}
static int number_of_threads(void)
@ -180,46 +180,46 @@ static int number_of_threads(void)
int fuse_session_loop_mt(struct fuse_session *se,
const int _threads)
{
int i;
int err;
int threads;
struct fuse_mt mt;
struct fuse_worker *w;
memset(&mt, 0, sizeof(struct fuse_mt));
mt.se = se;
mt.prevch = fuse_session_next_chan(se, NULL);
mt.error = 0;
mt.main.thread_id = pthread_self();
mt.main.prev = mt.main.next = &mt.main;
sem_init(&mt.finish, 0, 0);
threads = ((_threads > 0) ? _threads : number_of_threads());
if(_threads < 0)
threads /= -_threads;
if(threads == 0)
threads = 1;
err = 0;
for(i = 0; (i < threads) && !err; i++)
err = fuse_loop_start_thread(&mt);
if (!err) {
/* sem_wait() is interruptible */
while (!fuse_session_exited(se))
sem_wait(&mt.finish);
for (w = mt.main.next; w != &mt.main; w = w->next)
pthread_cancel(w->thread_id);
mt.exit = 1;
while (mt.main.next != &mt.main)
fuse_join_worker(mt.main.next);
err = mt.error;
}
sem_destroy(&mt.finish);
fuse_session_reset(se);
return err;
int i;
int err;
int threads;
struct fuse_mt mt;
struct fuse_worker *w;
memset(&mt, 0, sizeof(struct fuse_mt));
mt.se = se;
mt.prevch = fuse_session_next_chan(se, NULL);
mt.error = 0;
mt.main.thread_id = pthread_self();
mt.main.prev = mt.main.next = &mt.main;
sem_init(&mt.finish, 0, 0);
threads = ((_threads > 0) ? _threads : number_of_threads());
if(_threads < 0)
threads /= -_threads;
if(threads == 0)
threads = 1;
err = 0;
for(i = 0; (i < threads) && !err; i++)
err = fuse_loop_start_thread(&mt);
if (!err) {
/* sem_wait() is interruptible */
while (!fuse_session_exited(se))
sem_wait(&mt.finish);
for (w = mt.main.next; w != &mt.main; w = w->next)
pthread_cancel(w->thread_id);
mt.exit = 1;
while (mt.main.next != &mt.main)
fuse_join_worker(mt.main.next);
err = mt.error;
}
sem_destroy(&mt.finish);
fuse_session_reset(se);
return err;
}

3966
libfuse/lib/fuse_lowlevel.c
File diff suppressed because it is too large
View File

14
libfuse/lib/fuse_misc.h
View File

@ -11,8 +11,8 @@
/*
Versioned symbols cannot be used in some cases because it
- confuse the dynamic linker in uClibc
- not supported on MacOSX (in MachO binary format)
- confuse the dynamic linker in uClibc
- not supported on MacOSX (in MachO binary format)
*/
#if (!defined(__UCLIBC__) && !defined(__APPLE__))
#define FUSE_SYMVER(x) __asm__(x)
@ -26,11 +26,11 @@
/* Is this hack still needed? */
static inline void fuse_mutex_init(pthread_mutex_t *mut)
{
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
pthread_mutex_init(mut, &attr);
pthread_mutexattr_destroy(&attr);
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
pthread_mutex_init(mut, &attr);
pthread_mutexattr_destroy(&attr);
}
#endif

143
libfuse/lib/fuse_mt.c
View File

@ -16,109 +16,110 @@
#include <pthread.h>
#include <assert.h>
struct procdata {
struct fuse *f;
struct fuse_chan *prevch;
struct fuse_session *prevse;
fuse_processor_t proc;
void *data;
struct procdata
{
struct fuse *f;
struct fuse_chan *prevch;
struct fuse_session *prevse;
fuse_processor_t proc;
void *data;
};
static void mt_session_proc(void *data, const char *buf, size_t len,
struct fuse_chan *ch)
{
struct procdata *pd = (struct procdata *) data;
struct fuse_cmd *cmd = *(struct fuse_cmd **) buf;
struct procdata *pd = (struct procdata *) data;
struct fuse_cmd *cmd = *(struct fuse_cmd **) buf;
(void) len;
(void) ch;
pd->proc(pd->f, cmd, pd->data);
(void) len;
(void) ch;
pd->proc(pd->f, cmd, pd->data);
}
static void mt_session_exit(void *data, int val)
{
struct procdata *pd = (struct procdata *) data;
if (val)
fuse_session_exit(pd->prevse);
else
fuse_session_reset(pd->prevse);
struct procdata *pd = (struct procdata *) data;
if (val)
fuse_session_exit(pd->prevse);
else
fuse_session_reset(pd->prevse);
}
static int mt_session_exited(void *data)
{
struct procdata *pd = (struct procdata *) data;
return fuse_session_exited(pd->prevse);
struct procdata *pd = (struct procdata *) data;
return fuse_session_exited(pd->prevse);
}
static int mt_chan_receive(struct fuse_chan **chp, char *buf, size_t size)
{
struct fuse_cmd *cmd;
struct procdata *pd = (struct procdata *) fuse_chan_data(*chp);
struct fuse_cmd *cmd;
struct procdata *pd = (struct procdata *) fuse_chan_data(*chp);
assert(size >= sizeof(cmd));
assert(size >= sizeof(cmd));
cmd = fuse_read_cmd(pd->f);
if (cmd == NULL)
return 0;
cmd = fuse_read_cmd(pd->f);
if (cmd == NULL)
return 0;
*(struct fuse_cmd **) buf = cmd;
*(struct fuse_cmd **) buf = cmd;
return sizeof(cmd);
return sizeof(cmd);
}
int fuse_loop_mt_proc(struct fuse *f, fuse_processor_t proc, void *data)
{
int res;
struct procdata pd;
struct fuse_session *prevse = fuse_get_session(f);
struct fuse_session *se;
struct fuse_chan *prevch = fuse_session_next_chan(prevse, NULL);
struct fuse_chan *ch;
struct fuse_session_ops sop = {
.exit = mt_session_exit,
.exited = mt_session_exited,
.process = mt_session_proc,
};
struct fuse_chan_ops cop = {
.receive = mt_chan_receive,
};
pd.f = f;
pd.prevch = prevch;
pd.prevse = prevse;
pd.proc = proc;
pd.data = data;
se = fuse_session_new(&sop, &pd);
if (se == NULL)
return -1;
ch = fuse_chan_new(&cop, fuse_chan_fd(prevch),
sizeof(struct fuse_cmd *), &pd);
if (ch == NULL) {
fuse_session_destroy(se);
return -1;
}
fuse_session_add_chan(se, ch);
res = fuse_session_loop_mt(se,
fuse_config_num_threads(f));
fuse_session_destroy(se);
return res;
int res;
struct procdata pd;
struct fuse_session *prevse = fuse_get_session(f);
struct fuse_session *se;
struct fuse_chan *prevch = fuse_session_next_chan(prevse, NULL);
struct fuse_chan *ch;
struct fuse_session_ops sop = {
.exit = mt_session_exit,
.exited = mt_session_exited,
.process = mt_session_proc,
};
struct fuse_chan_ops cop = {
.receive = mt_chan_receive,
};
pd.f = f;
pd.prevch = prevch;
pd.prevse = prevse;
pd.proc = proc;
pd.data = data;
se = fuse_session_new(&sop, &pd);
if (se == NULL)
return -1;
ch = fuse_chan_new(&cop, fuse_chan_fd(prevch),
sizeof(struct fuse_cmd *), &pd);
if (ch == NULL) {
fuse_session_destroy(se);
return -1;
}
fuse_session_add_chan(se, ch);
res = fuse_session_loop_mt(se,
fuse_config_num_threads(f));
fuse_session_destroy(se);
return res;
}
int fuse_loop_mt(struct fuse *f)
{
if (f == NULL)
return -1;
if (f == NULL)
return -1;
int res = fuse_start_cleanup_thread(f);
if (res)
return -1;
int res = fuse_start_cleanup_thread(f);
if (res)
return -1;
res = fuse_session_loop_mt(fuse_get_session(f),
fuse_config_num_threads(f));
fuse_stop_cleanup_thread(f);
return res;
res = fuse_session_loop_mt(fuse_get_session(f),
fuse_config_num_threads(f));
fuse_stop_cleanup_thread(f);
return res;
}
FUSE_SYMVER(".symver fuse_loop_mt_proc,__fuse_loop_mt@");

593
libfuse/lib/fuse_opt.c
View File

@ -14,412 +14,417 @@
#include <string.h>
#include <assert.h>
struct fuse_opt_context {
void *data;
const struct fuse_opt *opt;
fuse_opt_proc_t proc;
int argctr;
int argc;
char **argv;
struct fuse_args outargs;
char *opts;
int nonopt;
struct fuse_opt_context
{
void *data;
const struct fuse_opt *opt;
fuse_opt_proc_t proc;
int argctr;
int argc;
char **argv;
struct fuse_args outargs;
char *opts;
int nonopt;
};
void fuse_opt_free_args(struct fuse_args *args)
void
fuse_opt_free_args(struct fuse_args *args)
{
if (args) {
if (args->argv && args->allocated) {
int i;
for (i = 0; i < args->argc; i++)
free(args->argv[i]);
free(args->argv);
}
args->argc = 0;
args->argv = NULL;
args->allocated = 0;
}
if (args) {
if (args->argv && args->allocated) {
int i;
for (i = 0; i < args->argc; i++)
free(args->argv[i]);
free(args->argv);
}
args->argc = 0;
args->argv = NULL;
args->allocated = 0;
}
}
static int alloc_failed(void)
static
int
alloc_failed(void)
{
fprintf(stderr, "fuse: memory allocation failed\n");
return -1;
fprintf(stderr, "fuse: memory allocation failed\n");
return -1;
}
int fuse_opt_add_arg(struct fuse_args *args, const char *arg)
int
fuse_opt_add_arg(struct fuse_args *args, const char *arg)
{
char **newargv;
char *newarg;
assert(!args->argv || args->allocated);
newarg = strdup(arg);
if (!newarg)
return alloc_failed();
newargv = realloc(args->argv, (args->argc + 2) * sizeof(char *));
if (!newargv) {
free(newarg);
return alloc_failed();
}
args->argv = newargv;
args->allocated = 1;
args->argv[args->argc++] = newarg;
args->argv[args->argc] = NULL;
return 0;
char **newargv;
char *newarg;
assert(!args->argv || args->allocated);
newarg = strdup(arg);
if (!newarg)
return alloc_failed();
newargv = realloc(args->argv, (args->argc + 2) * sizeof(char *));
if (!newargv) {
free(newarg);
return alloc_failed();
}
args->argv = newargv;
args->allocated = 1;
args->argv[args->argc++] = newarg;
args->argv[args->argc] = NULL;
return 0;
}
static int fuse_opt_insert_arg_common(struct fuse_args *args, int pos,
const char *arg)
{
assert(pos <= args->argc);
if (fuse_opt_add_arg(args, arg) == -1)
return -1;
if (pos != args->argc - 1) {
char *newarg = args->argv[args->argc - 1];
memmove(&args->argv[pos + 1], &args->argv[pos],
sizeof(char *) * (args->argc - pos - 1));
args->argv[pos] = newarg;
}
return 0;
assert(pos <= args->argc);
if (fuse_opt_add_arg(args, arg) == -1)
return -1;
if (pos != args->argc - 1) {
char *newarg = args->argv[args->argc - 1];
memmove(&args->argv[pos + 1], &args->argv[pos],
sizeof(char *) * (args->argc - pos - 1));
args->argv[pos] = newarg;
}
return 0;
}
int fuse_opt_insert_arg(struct fuse_args *args, int pos, const char *arg)
{
return fuse_opt_insert_arg_common(args, pos, arg);
return fuse_opt_insert_arg_common(args, pos, arg);
}
int fuse_opt_insert_arg_compat(struct fuse_args *args, int pos,
const char *arg);
int fuse_opt_insert_arg_compat(struct fuse_args *args, int pos, const char *arg)
{
return fuse_opt_insert_arg_common(args, pos, arg);
return fuse_opt_insert_arg_common(args, pos, arg);
}
static int next_arg(struct fuse_opt_context *ctx, const char *opt)
{
if (ctx->argctr + 1 >= ctx->argc) {
fprintf(stderr, "fuse: missing argument after `%s'\n", opt);
return -1;
}
ctx->argctr++;
return 0;
if (ctx->argctr + 1 >= ctx->argc) {
fprintf(stderr, "fuse: missing argument after `%s'\n", opt);
return -1;
}
ctx->argctr++;
return 0;
}
static int add_arg(struct fuse_opt_context *ctx, const char *arg)
{
return fuse_opt_add_arg(&ctx->outargs, arg);
return fuse_opt_add_arg(&ctx->outargs, arg);
}
static int add_opt_common(char **opts, const char *opt, int esc)
{
unsigned oldlen = *opts ? strlen(*opts) : 0;
char *d = realloc(*opts, oldlen + 1 + strlen(opt) * 2 + 1);
if (!d)
return alloc_failed();
*opts = d;
if (oldlen) {
d += oldlen;
*d++ = ',';
}
for (; *opt; opt++) {
if (esc && (*opt == ',' || *opt == '\\'))
*d++ = '\\';
*d++ = *opt;
}
*d = '\0';
return 0;
unsigned oldlen = *opts ? strlen(*opts) : 0;
char *d = realloc(*opts, oldlen + 1 + strlen(opt) * 2 + 1);
if (!d)
return alloc_failed();
*opts = d;
if (oldlen) {
d += oldlen;
*d++ = ',';
}
for (; *opt; opt++) {
if (esc && (*opt == ',' || *opt == '\\'))
*d++ = '\\';
*d++ = *opt;
}
*d = '\0';
return 0;
}
int fuse_opt_add_opt(char **opts, const char *opt)
{
return add_opt_common(opts, opt, 0);
return add_opt_common(opts, opt, 0);
}
int fuse_opt_add_opt_escaped(char **opts, const char *opt)
{
return add_opt_common(opts, opt, 1);
return add_opt_common(opts, opt, 1);
}
static int add_opt(struct fuse_opt_context *ctx, const char *opt)
{
return add_opt_common(&ctx->opts, opt, 1);
return add_opt_common(&ctx->opts, opt, 1);
}
static int call_proc(struct fuse_opt_context *ctx, const char *arg, int key,
int iso)
{
if (key == FUSE_OPT_KEY_DISCARD)
return 0;
if (key != FUSE_OPT_KEY_KEEP && ctx->proc) {
int res = ctx->proc(ctx->data, arg, key, &ctx->outargs);
if (res == -1 || !res)
return res;
}
if (iso)
return add_opt(ctx, arg);
else
return add_arg(ctx, arg);
if (key == FUSE_OPT_KEY_DISCARD)
return 0;
if (key != FUSE_OPT_KEY_KEEP && ctx->proc) {
int res = ctx->proc(ctx->data, arg, key, &ctx->outargs);
if (res == -1 || !res)
return res;
}
if (iso)
return add_opt(ctx, arg);
else
return add_arg(ctx, arg);
}
static int match_template(const char *t, const char *arg, unsigned *sepp)
{
int arglen = strlen(arg);
const char *sep = strchr(t, '=');
sep = sep ? sep : strchr(t, ' ');
if (sep && (!sep[1] || sep[1] == '%')) {
int tlen = sep - t;
if (sep[0] == '=')
tlen ++;
if (arglen >= tlen && strncmp(arg, t, tlen) == 0) {
*sepp = sep - t;
return 1;
}
}
if (strcmp(t, arg) == 0) {
*sepp = 0;
return 1;
}
return 0;
int arglen = strlen(arg);
const char *sep = strchr(t, '=');
sep = sep ? sep : strchr(t, ' ');
if (sep && (!sep[1] || sep[1] == '%')) {
int tlen = sep - t;
if (sep[0] == '=')
tlen ++;
if (arglen >= tlen && strncmp(arg, t, tlen) == 0) {
*sepp = sep - t;
return 1;
}
}
if (strcmp(t, arg) == 0) {
*sepp = 0;
return 1;
}
return 0;
}
static const struct fuse_opt *find_opt(const struct fuse_opt *opt,
const char *arg, unsigned *sepp)
{
for (; opt && opt->templ; opt++)
if (match_template(opt->templ, arg, sepp))
return opt;
return NULL;
for (; opt && opt->templ; opt++)
if (match_template(opt->templ, arg, sepp))
return opt;
return NULL;
}
int fuse_opt_match(const struct fuse_opt *opts, const char *opt)
{
unsigned dummy;
return find_opt(opts, opt, &dummy) ? 1 : 0;
unsigned dummy;
return find_opt(opts, opt, &dummy) ? 1 : 0;
}
static int process_opt_param(void *var, const char *format, const char *param,
const char *arg)
{
assert(format[0] == '%');
if (format[1] == 's') {
char *copy = strdup(param);
if (!copy)
return alloc_failed();
*(char **) var = copy;
} else {
if (sscanf(param, format, var) != 1) {
fprintf(stderr, "fuse: invalid parameter in option `%s'\n", arg);
return -1;
}
}
return 0;
assert(format[0] == '%');
if (format[1] == 's') {
char *copy = strdup(param);
if (!copy)
return alloc_failed();
*(char **) var = copy;
} else {
if (sscanf(param, format, var) != 1) {
fprintf(stderr, "fuse: invalid parameter in option `%s'\n", arg);
return -1;
}
}
return 0;
}
static int process_opt(struct fuse_opt_context *ctx,
const struct fuse_opt *opt, unsigned sep,
const char *arg, int iso)
{
if (opt->offset == -1U) {
if (call_proc(ctx, arg, opt->value, iso) == -1)
return -1;
} else {
void *var = ctx->data + opt->offset;
if (sep && opt->templ[sep + 1]) {
const char *param = arg + sep;
if (opt->templ[sep] == '=')
param ++;
if (process_opt_param(var, opt->templ + sep + 1,
param, arg) == -1)
return -1;
} else
*(int *)var = opt->value;
}
return 0;
if (opt->offset == -1U) {
if (call_proc(ctx, arg, opt->value, iso) == -1)
return -1;
} else {
void *var = ctx->data + opt->offset;
if (sep && opt->templ[sep + 1]) {
const char *param = arg + sep;
if (opt->templ[sep] == '=')
param ++;
if (process_opt_param(var, opt->templ + sep + 1,
param, arg) == -1)
return -1;
} else
*(int *)var = opt->value;
}
return 0;
}
static int process_opt_sep_arg(struct fuse_opt_context *ctx,
const struct fuse_opt *opt, unsigned sep,
const char *arg, int iso)
{
int res;
char *newarg;
char *param;
int res;
char *newarg;
char *param;
if (next_arg(ctx, arg) == -1)
return -1;
if (next_arg(ctx, arg) == -1)
return -1;
param = ctx->argv[ctx->argctr];
newarg = malloc(sep + strlen(param) + 1);
if (!newarg)
return alloc_failed();
param = ctx->argv[ctx->argctr];
newarg = malloc(sep + strlen(param) + 1);
if (!newarg)
return alloc_failed();
memcpy(newarg, arg, sep);
strcpy(newarg + sep, param);
res = process_opt(ctx, opt, sep, newarg, iso);
free(newarg);
memcpy(newarg, arg, sep);
strcpy(newarg + sep, param);
res = process_opt(ctx, opt, sep, newarg, iso);
free(newarg);
return res;
return res;
}
static int process_gopt(struct fuse_opt_context *ctx, const char *arg, int iso)
{
unsigned sep;
const struct fuse_opt *opt = find_opt(ctx->opt, arg, &sep);
if (opt) {
for (; opt; opt = find_opt(opt + 1, arg, &sep)) {
int res;
if (sep && opt->templ[sep] == ' ' && !arg[sep])
res = process_opt_sep_arg(ctx, opt, sep, arg,
iso);
else
res = process_opt(ctx, opt, sep, arg, iso);
if (res == -1)
return -1;
}
return 0;
} else
return call_proc(ctx, arg, FUSE_OPT_KEY_OPT, iso);
unsigned sep;
const struct fuse_opt *opt = find_opt(ctx->opt, arg, &sep);
if (opt) {
for (; opt; opt = find_opt(opt + 1, arg, &sep)) {
int res;
if (sep && opt->templ[sep] == ' ' && !arg[sep])
res = process_opt_sep_arg(ctx, opt, sep, arg,
iso);
else
res = process_opt(ctx, opt, sep, arg, iso);
if (res == -1)
return -1;
}
return 0;
} else
return call_proc(ctx, arg, FUSE_OPT_KEY_OPT, iso);
}
static int process_real_option_group(struct fuse_opt_context *ctx, char *opts)
{
char *s = opts;
char *d = s;
int end = 0;
while (!end) {
if (*s == '\0')
end = 1;
if (*s == ',' || end) {
int res;
*d = '\0';
res = process_gopt(ctx, opts, 1);
if (res == -1)
return -1;
d = opts;
} else {
if (s[0] == '\\' && s[1] != '\0') {
s++;
if (s[0] >= '0' && s[0] <= '3' &&
s[1] >= '0' && s[1] <= '7' &&
s[2] >= '0' && s[2] <= '7') {
*d++ = (s[0] - '0') * 0100 +
(s[1] - '0') * 0010 +
(s[2] - '0');
s += 2;
} else {
*d++ = *s;
}
} else {
*d++ = *s;
}
}
s++;
}
return 0;
char *s = opts;
char *d = s;
int end = 0;
while (!end) {
if (*s == '\0')
end = 1;
if (*s == ',' || end) {
int res;
*d = '\0';
res = process_gopt(ctx, opts, 1);
if (res == -1)
return -1;
d = opts;
} else {
if (s[0] == '\\' && s[1] != '\0') {
s++;
if (s[0] >= '0' && s[0] <= '3' &&
s[1] >= '0' && s[1] <= '7' &&
s[2] >= '0' && s[2] <= '7') {
*d++ = (s[0] - '0') * 0100 +
(s[1] - '0') * 0010 +
(s[2] - '0');
s += 2;
} else {
*d++ = *s;
}
} else {
*d++ = *s;
}
}
s++;
}
return 0;
}
static int process_option_group(struct fuse_opt_context *ctx, const char *opts)
{
int res;
char *copy = strdup(opts);
if (!copy) {
fprintf(stderr, "fuse: memory allocation failed\n");
return -1;
}
res = process_real_option_group(ctx, copy);
free(copy);
return res;
int res;
char *copy = strdup(opts);
if (!copy) {
fprintf(stderr, "fuse: memory allocation failed\n");
return -1;
}
res = process_real_option_group(ctx, copy);
free(copy);
return res;
}
static int process_one(struct fuse_opt_context *ctx, const char *arg)
{
if (ctx->nonopt || arg[0] != '-')
return call_proc(ctx, arg, FUSE_OPT_KEY_NONOPT, 0);
else if (arg[1] == 'o') {
if (arg[2])
return process_option_group(ctx, arg + 2);
else {
if (next_arg(ctx, arg) == -1)
return -1;
return process_option_group(ctx,
ctx->argv[ctx->argctr]);
}
} else if (arg[1] == '-' && !arg[2]) {
if (add_arg(ctx, arg) == -1)
return -1;
ctx->nonopt = ctx->outargs.argc;
return 0;
} else
return process_gopt(ctx, arg, 0);
if (ctx->nonopt || arg[0] != '-')
return call_proc(ctx, arg, FUSE_OPT_KEY_NONOPT, 0);
else if (arg[1] == 'o') {
if (arg[2])
return process_option_group(ctx, arg + 2);
else {
if (next_arg(ctx, arg) == -1)
return -1;
return process_option_group(ctx,
ctx->argv[ctx->argctr]);
}
} else if (arg[1] == '-' && !arg[2]) {
if (add_arg(ctx, arg) == -1)
return -1;
ctx->nonopt = ctx->outargs.argc;
return 0;
} else
return process_gopt(ctx, arg, 0);
}
static int opt_parse(struct fuse_opt_context *ctx)
{
if (ctx->argc) {
if (add_arg(ctx, ctx->argv[0]) == -1)
return -1;
}
for (ctx->argctr = 1; ctx->argctr < ctx->argc; ctx->argctr++)
if (process_one(ctx, ctx->argv[ctx->argctr]) == -1)
return -1;
if (ctx->opts) {
if (fuse_opt_insert_arg(&ctx->outargs, 1, "-o") == -1 ||
fuse_opt_insert_arg(&ctx->outargs, 2, ctx->opts) == -1)
return -1;
}
/* If option separator ("--") is the last argument, remove it */
if (ctx->nonopt && ctx->nonopt == ctx->outargs.argc &&
strcmp(ctx->outargs.argv[ctx->outargs.argc - 1], "--") == 0) {
free(ctx->outargs.argv[ctx->outargs.argc - 1]);
ctx->outargs.argv[--ctx->outargs.argc] = NULL;
}
return 0;
if (ctx->argc) {
if (add_arg(ctx, ctx->argv[0]) == -1)
return -1;
}
for (ctx->argctr = 1; ctx->argctr < ctx->argc; ctx->argctr++)
if (process_one(ctx, ctx->argv[ctx->argctr]) == -1)
return -1;
if (ctx->opts) {
if (fuse_opt_insert_arg(&ctx->outargs, 1, "-o") == -1 ||
fuse_opt_insert_arg(&ctx->outargs, 2, ctx->opts) == -1)
return -1;
}
/* If option separator ("--") is the last argument, remove it */
if (ctx->nonopt && ctx->nonopt == ctx->outargs.argc &&
strcmp(ctx->outargs.argv[ctx->outargs.argc - 1], "--") == 0) {
free(ctx->outargs.argv[ctx->outargs.argc - 1]);
ctx->outargs.argv[--ctx->outargs.argc] = NULL;
}
return 0;
}
int fuse_opt_parse(struct fuse_args *args, void *data,
const struct fuse_opt opts[], fuse_opt_proc_t proc)
{
int res;
struct fuse_opt_context ctx = {
.data = data,
.opt = opts,
.proc = proc,
};
if (!args || !args->argv || !args->argc)
return 0;
ctx.argc = args->argc;
ctx.argv = args->argv;
res = opt_parse(&ctx);
if (res != -1) {
struct fuse_args tmp = *args;
*args = ctx.outargs;
ctx.outargs = tmp;
}
free(ctx.opts);
fuse_opt_free_args(&ctx.outargs);
return res;
int res;
struct fuse_opt_context ctx = {
.data = data,
.opt = opts,
.proc = proc,
};
if (!args || !args->argv || !args->argc)
return 0;
ctx.argc = args->argc;
ctx.argv = args->argv;
res = opt_parse(&ctx);
if (res != -1) {
struct fuse_args tmp = *args;
*args = ctx.outargs;
ctx.outargs = tmp;
}
free(ctx.opts);
fuse_opt_free_args(&ctx.outargs);
return res;
}
/* This symbol version was mistakenly added to the version script */

204
libfuse/lib/fuse_session.c
View File

@ -17,222 +17,218 @@
#include <assert.h>
#include <errno.h>
struct fuse_chan {
struct fuse_chan_ops op;
struct fuse_session *se;
int fd;
size_t bufsize;
void *data;
int compat;
struct fuse_chan
{
struct fuse_chan_ops op;
struct fuse_session *se;
int fd;
size_t bufsize;
void *data;
int compat;
};
struct fuse_session *fuse_session_new(struct fuse_session_ops *op, void *data)
{
struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se));
if (se == NULL) {
fprintf(stderr, "fuse: failed to allocate session\n");
return NULL;
}
struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se));
if (se == NULL) {
fprintf(stderr, "fuse: failed to allocate session\n");
return NULL;
}
memset(se, 0, sizeof(*se));
se->op = *op;
se->data = data;
memset(se, 0, sizeof(*se));
se->op = *op;
se->data = data;
return se;
return se;
}
void fuse_session_add_chan(struct fuse_session *se, struct fuse_chan *ch)
{
assert(se->ch == NULL);
assert(ch->se == NULL);
se->ch = ch;
ch->se = se;
assert(se->ch == NULL);
assert(ch->se == NULL);
se->ch = ch;
ch->se = se;
}
void fuse_session_remove_chan(struct fuse_chan *ch)
{
struct fuse_session *se = ch->se;
if (se) {
assert(se->ch == ch);
se->ch = NULL;
ch->se = NULL;
}
struct fuse_session *se = ch->se;
if (se) {
assert(se->ch == ch);
se->ch = NULL;
ch->se = NULL;
}
}
struct fuse_chan *fuse_session_next_chan(struct fuse_session *se,
struct fuse_chan *ch)
{
assert(ch == NULL || ch == se->ch);
if (ch == NULL)
return se->ch;
else
return NULL;
assert(ch == NULL || ch == se->ch);
if (ch == NULL)
return se->ch;
else
return NULL;
}
void fuse_session_process(struct fuse_session *se, const char *buf, size_t len,
struct fuse_chan *ch)
{
se->op.process(se->data, buf, len, ch);
se->op.process(se->data, buf, len, ch);
}
void fuse_session_process_buf(struct fuse_session *se,
const struct fuse_buf *buf, struct fuse_chan *ch)
{
if (se->process_buf) {
se->process_buf(se->data, buf, ch);
} else {
assert(!(buf->flags & FUSE_BUF_IS_FD));
fuse_session_process(se->data, buf->mem, buf->size, ch);
}
if (se->process_buf) {
se->process_buf(se->data, buf, ch);
} else {
assert(!(buf->flags & FUSE_BUF_IS_FD));
fuse_session_process(se->data, buf->mem, buf->size, ch);
}
}
int fuse_session_receive_buf(struct fuse_session *se, struct fuse_buf *buf,
struct fuse_chan **chp)
{
int res;
int res;
if (se->receive_buf) {
res = se->receive_buf(se, buf, chp);
} else {
res = fuse_chan_recv(chp, buf->mem, buf->size);
if (res > 0)
buf->size = res;
}
if (se->receive_buf) {
res = se->receive_buf(se, buf, chp);
} else {
res = fuse_chan_recv(chp, buf->mem, buf->size);
if (res > 0)
buf->size = res;
}
return res;
return res;
}
void fuse_session_destroy(struct fuse_session *se)
{
if (se->op.destroy)
se->op.destroy(se->data);
if (se->ch != NULL)
fuse_chan_destroy(se->ch);
free(se);
if (se->op.destroy)
se->op.destroy(se->data);
if (se->ch != NULL)
fuse_chan_destroy(se->ch);
free(se);
}
void fuse_session_exit(struct fuse_session *se)
{
if (se->op.exit)
se->op.exit(se->data, 1);
se->exited = 1;
if (se->op.exit)
se->op.exit(se->data, 1);
se->exited = 1;
}
void fuse_session_reset(struct fuse_session *se)
{
if (se->op.exit)
se->op.exit(se->data, 0);
se->exited = 0;
if (se->op.exit)
se->op.exit(se->data, 0);
se->exited = 0;
}
int fuse_session_exited(struct fuse_session *se)
{
if (se->op.exited)
return se->op.exited(se->data);
else
return se->exited;
if (se->op.exited)
return se->op.exited(se->data);
else
return se->exited;
}
void *fuse_session_data(struct fuse_session *se)
{
return se->data;
return se->data;
}
static struct fuse_chan *fuse_chan_new_common(struct fuse_chan_ops *op, int fd,
size_t bufsize, void *data,
int compat)
{
struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch));
if (ch == NULL) {
fprintf(stderr, "fuse: failed to allocate channel\n");
return NULL;
}
struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch));
if (ch == NULL) {
fprintf(stderr, "fuse: failed to allocate channel\n");
return NULL;
}
memset(ch, 0, sizeof(*ch));
ch->op = *op;
ch->fd = fd;
ch->bufsize = bufsize;
ch->data = data;
ch->compat = compat;
memset(ch, 0, sizeof(*ch));
ch->op = *op;
ch->fd = fd;
ch->bufsize = bufsize;
ch->data = data;
ch->compat = compat;
return ch;
return ch;
}
struct fuse_chan *fuse_chan_new(struct fuse_chan_ops *op, int fd,
size_t bufsize, void *data)
{
return fuse_chan_new_common(op, fd, bufsize, data, 0);
return fuse_chan_new_common(op, fd, bufsize, data, 0);
}
struct fuse_chan *fuse_chan_new_compat24(struct fuse_chan_ops_compat24 *op,
int fd, size_t bufsize, void *data)
{
return fuse_chan_new_common((struct fuse_chan_ops *) op, fd, bufsize,
data, 24);
return fuse_chan_new_common((struct fuse_chan_ops *) op, fd, bufsize,
data, 24);
}
int fuse_chan_fd(struct fuse_chan *ch)
{
return ch->fd;
return ch->fd;
}
int fuse_chan_clearfd(struct fuse_chan *ch)
{
int fd = ch->fd;
ch->fd = -1;
return fd;
int fd = ch->fd;
ch->fd = -1;
return fd;
}
size_t fuse_chan_bufsize(struct fuse_chan *ch)
{
return ch->bufsize;
return ch->bufsize;
}
void *fuse_chan_data(struct fuse_chan *ch)
{
return ch->data;
return ch->data;
}
struct fuse_session *fuse_chan_session(struct fuse_chan *ch)
{
return ch->se;
return ch->se;
}
int fuse_chan_recv(struct fuse_chan **chp, char *buf, size_t size)
{
struct fuse_chan *ch = *chp;
if (ch->compat)
return ((struct fuse_chan_ops_compat24 *) &ch->op)
->receive(ch, buf, size);
else
return ch->op.receive(chp, buf, size);
struct fuse_chan *ch = *chp;
if (ch->compat)
return ((struct fuse_chan_ops_compat24 *) &ch->op)
->receive(ch, buf, size);
else
return ch->op.receive(chp, buf, size);
}
int fuse_chan_receive(struct fuse_chan *ch, char *buf, size_t size)
{
int res;
int res;
res = fuse_chan_recv(&ch, buf, size);
return res >= 0 ? res : (res != -EINTR && res != -EAGAIN) ? -1 : 0;
res = fuse_chan_recv(&ch, buf, size);
return res >= 0 ? res : (res != -EINTR && res != -EAGAIN) ? -1 : 0;
}
int fuse_chan_send(struct fuse_chan *ch, const struct iovec iov[], size_t count)
{
return ch->op.send(ch, iov, count);
return ch->op.send(ch, iov, count);
}
void fuse_chan_destroy(struct fuse_chan *ch)
{
fuse_session_remove_chan(ch);
if (ch->op.destroy)
ch->op.destroy(ch);
free(ch);
fuse_session_remove_chan(ch);
if (ch->op.destroy)
ch->op.destroy(ch);
free(ch);
}
#ifndef __FreeBSD__

71
libfuse/lib/fuse_signals.c
View File

@ -16,57 +16,56 @@ static struct fuse_session *fuse_instance;
static void exit_handler(int sig)
{
(void) sig;
if (fuse_instance)
fuse_session_exit(fuse_instance);
(void) sig;
if (fuse_instance)
fuse_session_exit(fuse_instance);
}
static int set_one_signal_handler(int sig, void (*handler)(int), int remove)
{
struct sigaction sa;
struct sigaction old_sa;
struct sigaction sa;
struct sigaction old_sa;
memset(&sa, 0, sizeof(struct sigaction));
sa.sa_handler = remove ? SIG_DFL : handler;
sigemptyset(&(sa.sa_mask));
sa.sa_flags = 0;
memset(&sa, 0, sizeof(struct sigaction));
sa.sa_handler = remove ? SIG_DFL : handler;
sigemptyset(&(sa.sa_mask));
sa.sa_flags = 0;
if (sigaction(sig, NULL, &old_sa) == -1) {
perror("fuse: cannot get old signal handler");
return -1;
}
if (sigaction(sig, NULL, &old_sa) == -1) {
perror("fuse: cannot get old signal handler");
return -1;
}
if (old_sa.sa_handler == (remove ? handler : SIG_DFL) &&
sigaction(sig, &sa, NULL) == -1) {
perror("fuse: cannot set signal handler");
return -1;
}
return 0;
if (old_sa.sa_handler == (remove ? handler : SIG_DFL) &&
sigaction(sig, &sa, NULL) == -1) {
perror("fuse: cannot set signal handler");
return -1;
}
return 0;
}
int fuse_set_signal_handlers(struct fuse_session *se)
{
if (set_one_signal_handler(SIGHUP, exit_handler, 0) == -1 ||
set_one_signal_handler(SIGINT, exit_handler, 0) == -1 ||
set_one_signal_handler(SIGTERM, exit_handler, 0) == -1 ||
set_one_signal_handler(SIGPIPE, SIG_IGN, 0) == -1)
return -1;
if (set_one_signal_handler(SIGHUP, exit_handler, 0) == -1 ||
set_one_signal_handler(SIGINT, exit_handler, 0) == -1 ||
set_one_signal_handler(SIGTERM, exit_handler, 0) == -1 ||
set_one_signal_handler(SIGPIPE, SIG_IGN, 0) == -1)
return -1;
fuse_instance = se;
return 0;
fuse_instance = se;
return 0;
}
void fuse_remove_signal_handlers(struct fuse_session *se)
{
if (fuse_instance != se)
fprintf(stderr,
"fuse: fuse_remove_signal_handlers: unknown session\n");
else
fuse_instance = NULL;
if (fuse_instance != se)
fprintf(stderr,
"fuse: fuse_remove_signal_handlers: unknown session\n");
else
fuse_instance = NULL;
set_one_signal_handler(SIGHUP, exit_handler, 1);
set_one_signal_handler(SIGINT, exit_handler, 1);
set_one_signal_handler(SIGTERM, exit_handler, 1);
set_one_signal_handler(SIGPIPE, SIG_IGN, 1);
set_one_signal_handler(SIGHUP, exit_handler, 1);
set_one_signal_handler(SIGINT, exit_handler, 1);
set_one_signal_handler(SIGTERM, exit_handler, 1);
set_one_signal_handler(SIGPIPE, SIG_IGN, 1);
}

478
libfuse/lib/helper.c
View File

@ -23,9 +23,9 @@
#include <sys/param.h>
enum {
KEY_HELP,
KEY_HELP_NOHEADER,
KEY_VERSION,
KEY_HELP,
KEY_HELP_NOHEADER,
KEY_VERSION,
};
struct helper_opts
@ -42,109 +42,109 @@ static
const
struct fuse_opt fuse_helper_opts[] =
{
FUSE_HELPER_OPT("-d", foreground),
FUSE_HELPER_OPT("debug", foreground),
FUSE_HELPER_OPT("-f", foreground),
FUSE_HELPER_OPT("-s", singlethread),
FUSE_HELPER_OPT("fsname=", nodefault_subtype),
FUSE_HELPER_OPT("subtype=", nodefault_subtype),
FUSE_OPT_KEY("-h", KEY_HELP),
FUSE_OPT_KEY("--help", KEY_HELP),
FUSE_OPT_KEY("-ho", KEY_HELP_NOHEADER),
FUSE_OPT_KEY("-V", KEY_VERSION),
FUSE_OPT_KEY("--version", KEY_VERSION),
FUSE_OPT_KEY("-d", FUSE_OPT_KEY_KEEP),
FUSE_OPT_KEY("debug", FUSE_OPT_KEY_KEEP),
FUSE_OPT_KEY("fsname=", FUSE_OPT_KEY_KEEP),
FUSE_OPT_KEY("subtype=", FUSE_OPT_KEY_KEEP),
FUSE_OPT_END
};
FUSE_HELPER_OPT("-d", foreground),
FUSE_HELPER_OPT("debug", foreground),
FUSE_HELPER_OPT("-f", foreground),
FUSE_HELPER_OPT("-s", singlethread),
FUSE_HELPER_OPT("fsname=", nodefault_subtype),
FUSE_HELPER_OPT("subtype=", nodefault_subtype),
FUSE_OPT_KEY("-h", KEY_HELP),
FUSE_OPT_KEY("--help", KEY_HELP),
FUSE_OPT_KEY("-ho", KEY_HELP_NOHEADER),
FUSE_OPT_KEY("-V", KEY_VERSION),
FUSE_OPT_KEY("--version", KEY_VERSION),
FUSE_OPT_KEY("-d", FUSE_OPT_KEY_KEEP),
FUSE_OPT_KEY("debug", FUSE_OPT_KEY_KEEP),
FUSE_OPT_KEY("fsname=", FUSE_OPT_KEY_KEEP),
FUSE_OPT_KEY("subtype=", FUSE_OPT_KEY_KEEP),
FUSE_OPT_END
};
static void usage(const char *progname)
{
fprintf(stderr,
"usage: %s mountpoint [options]\n\n", progname);
fprintf(stderr,
"general options:\n"
" -o opt,[opt...] mount options\n"
" -h --help print help\n"
" -V --version print version\n"
"\n");
fprintf(stderr,
"usage: %s mountpoint [options]\n\n", progname);
fprintf(stderr,
"general options:\n"
" -o opt,[opt...] mount options\n"
" -h --help print help\n"
" -V --version print version\n"
"\n");
}
static void helper_help(void)
{
fprintf(stderr,
"FUSE options:\n"
" -d -o debug enable debug output (implies -f)\n"
" -f foreground operation\n"
" -s disable multi-threaded operation\n"
"\n"
);
fprintf(stderr,
"FUSE options:\n"
" -d -o debug enable debug output (implies -f)\n"
" -f foreground operation\n"
" -s disable multi-threaded operation\n"
"\n"
);
}
static void helper_version(void)
{
fprintf(stderr, "FUSE library version: %s\n", PACKAGE_VERSION);
fprintf(stderr, "FUSE library version: %s\n", PACKAGE_VERSION);
}
static int fuse_helper_opt_proc(void *data, const char *arg, int key,
struct fuse_args *outargs)
{
struct helper_opts *hopts = data;
switch (key) {
case KEY_HELP:
usage(outargs->argv[0]);
/* fall through */
case KEY_HELP_NOHEADER:
helper_help();
return fuse_opt_add_arg(outargs, "-h");
case KEY_VERSION:
helper_version();
return 1;
case FUSE_OPT_KEY_NONOPT:
if (!hopts->mountpoint) {
char mountpoint[PATH_MAX];
if (realpath(arg, mountpoint) == NULL) {
fprintf(stderr,
"fuse: bad mount point `%s': %s\n",
arg, strerror(errno));
return -1;
}
return fuse_opt_add_opt(&hopts->mountpoint, mountpoint);
} else {
fprintf(stderr, "fuse: invalid argument `%s'\n", arg);
return -1;
}
default:
return 1;
}
struct helper_opts *hopts = data;
switch (key) {
case KEY_HELP:
usage(outargs->argv[0]);
/* fall through */
case KEY_HELP_NOHEADER:
helper_help();
return fuse_opt_add_arg(outargs, "-h");
case KEY_VERSION:
helper_version();
return 1;
case FUSE_OPT_KEY_NONOPT:
if (!hopts->mountpoint) {
char mountpoint[PATH_MAX];
if (realpath(arg, mountpoint) == NULL) {
fprintf(stderr,
"fuse: bad mount point `%s': %s\n",
arg, strerror(errno));
return -1;
}
return fuse_opt_add_opt(&hopts->mountpoint, mountpoint);
} else {
fprintf(stderr, "fuse: invalid argument `%s'\n", arg);
return -1;
}
default:
return 1;
}
}
static int add_default_subtype(const char *progname, struct fuse_args *args)
{
int res;
char *subtype_opt;
const char *basename = strrchr(progname, '/');
if (basename == NULL)
basename = progname;
else if (basename[1] != '\0')
basename++;
subtype_opt = (char *) malloc(strlen(basename) + 64);
if (subtype_opt == NULL) {
fprintf(stderr, "fuse: memory allocation failed\n");
return -1;
}
sprintf(subtype_opt, "-osubtype=%s", basename);
res = fuse_opt_add_arg(args, subtype_opt);
free(subtype_opt);
return res;
int res;
char *subtype_opt;
const char *basename = strrchr(progname, '/');
if (basename == NULL)
basename = progname;
else if (basename[1] != '\0')
basename++;
subtype_opt = (char *) malloc(strlen(basename) + 64);
if (subtype_opt == NULL) {
fprintf(stderr, "fuse: memory allocation failed\n");
return -1;
}
sprintf(subtype_opt, "-osubtype=%s", basename);
res = fuse_opt_add_arg(args, subtype_opt);
free(subtype_opt);
return res;
}
int
@ -191,54 +191,54 @@ fuse_parse_cmdline(struct fuse_args *args_,
int fuse_daemonize(int foreground)
{
if (!foreground) {
int nullfd;
int waiter[2];
char completed;
if (pipe(waiter)) {
perror("fuse_daemonize: pipe");
return -1;
}
/*
* demonize current process by forking it and killing the
* parent. This makes current process as a child of 'init'.
*/
switch(fork()) {
case -1:
perror("fuse_daemonize: fork");
return -1;
case 0:
break;
default:
read(waiter[0], &completed, sizeof(completed));
_exit(0);
}
if (setsid() == -1) {
perror("fuse_daemonize: setsid");
return -1;
}
(void) chdir("/");
nullfd = open("/dev/null", O_RDWR, 0);
if (nullfd != -1) {
(void) dup2(nullfd, 0);
(void) dup2(nullfd, 1);
(void) dup2(nullfd, 2);
if (nullfd > 2)
close(nullfd);
}
/* Propagate completion of daemon initializatation */
completed = 1;
write(waiter[1], &completed, sizeof(completed));
close(waiter[0]);
close(waiter[1]);
}
return 0;
if (!foreground) {
int nullfd;
int waiter[2];
char completed;
if (pipe(waiter)) {
perror("fuse_daemonize: pipe");
return -1;
}
/*
* demonize current process by forking it and killing the
* parent. This makes current process as a child of 'init'.
*/
switch(fork()) {
case -1:
perror("fuse_daemonize: fork");
return -1;
case 0:
break;
default:
read(waiter[0], &completed, sizeof(completed));
_exit(0);
}
if (setsid() == -1) {
perror("fuse_daemonize: setsid");
return -1;
}
(void) chdir("/");
nullfd = open("/dev/null", O_RDWR, 0);
if (nullfd != -1) {
(void) dup2(nullfd, 0);
(void) dup2(nullfd, 1);
(void) dup2(nullfd, 2);
if (nullfd > 2)
close(nullfd);
}
/* Propagate completion of daemon initializatation */
completed = 1;
write(waiter[1], &completed, sizeof(completed));
close(waiter[0]);
close(waiter[1]);
}
return 0;
}
static
@ -280,17 +280,17 @@ fuse_mount(const char *mountpoint_,
static void fuse_unmount_common(const char *mountpoint, struct fuse_chan *ch)
{
if (mountpoint) {
int fd = ch ? fuse_chan_clearfd(ch) : -1;
fuse_kern_unmount(mountpoint, fd);
if (ch)
fuse_chan_destroy(ch);
}
if (mountpoint) {
int fd = ch ? fuse_chan_clearfd(ch) : -1;
fuse_kern_unmount(mountpoint, fd);
if (ch)
fuse_chan_destroy(ch);
}
}
void fuse_unmount(const char *mountpoint, struct fuse_chan *ch)
{
fuse_unmount_common(mountpoint, ch);
fuse_unmount_common(mountpoint, ch);
}
struct fuse *fuse_setup_common(int argc, char *argv[],
@ -302,115 +302,115 @@ struct fuse *fuse_setup_common(int argc, char *argv[],
void *user_data,
int compat)
{
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
struct fuse_chan *ch;
struct fuse *fuse;
int foreground;
int res;
res = fuse_parse_cmdline(&args, mountpoint, multithreaded, &foreground);
if (res == -1)
return NULL;
ch = fuse_mount_common(*mountpoint, &args);
if (!ch) {
fuse_opt_free_args(&args);
goto err_free;
}
fuse = fuse_new_common(ch, &args, op, op_size, user_data, compat);
fuse_opt_free_args(&args);
if (fuse == NULL)
goto err_unmount;
res = fuse_daemonize(foreground);
if (res == -1)
goto err_unmount;
res = fuse_set_signal_handlers(fuse_get_session(fuse));
if (res == -1)
goto err_unmount;
if (fd)
*fd = fuse_chan_fd(ch);
return fuse;
err_unmount:
fuse_unmount_common(*mountpoint, ch);
if (fuse)
fuse_destroy(fuse);
err_free:
free(*mountpoint);
return NULL;
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
struct fuse_chan *ch;
struct fuse *fuse;
int foreground;
int res;
res = fuse_parse_cmdline(&args, mountpoint, multithreaded, &foreground);
if (res == -1)
return NULL;
ch = fuse_mount_common(*mountpoint, &args);
if (!ch) {
fuse_opt_free_args(&args);
goto err_free;
}
fuse = fuse_new_common(ch, &args, op, op_size, user_data, compat);
fuse_opt_free_args(&args);
if (fuse == NULL)
goto err_unmount;
res = fuse_daemonize(foreground);
if (res == -1)
goto err_unmount;
res = fuse_set_signal_handlers(fuse_get_session(fuse));
if (res == -1)
goto err_unmount;
if (fd)
*fd = fuse_chan_fd(ch);
return fuse;
err_unmount:
fuse_unmount_common(*mountpoint, ch);
if (fuse)
fuse_destroy(fuse);
err_free:
free(*mountpoint);
return NULL;
}
struct fuse *fuse_setup(int argc, char *argv[],
const struct fuse_operations *op, size_t op_size,
char **mountpoint, int *multithreaded, void *user_data)
{
return fuse_setup_common(argc, argv, op, op_size, mountpoint,
multithreaded, NULL, user_data, 0);
return fuse_setup_common(argc, argv, op, op_size, mountpoint,
multithreaded, NULL, user_data, 0);
}
static void fuse_teardown_common(struct fuse *fuse, char *mountpoint)
{
struct fuse_session *se = fuse_get_session(fuse);
struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
fuse_remove_signal_handlers(se);
fuse_unmount_common(mountpoint, ch);
fuse_destroy(fuse);
free(mountpoint);
struct fuse_session *se = fuse_get_session(fuse);
struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
fuse_remove_signal_handlers(se);
fuse_unmount_common(mountpoint, ch);
fuse_destroy(fuse);
free(mountpoint);
}
void fuse_teardown(struct fuse *fuse, char *mountpoint)
{
fuse_teardown_common(fuse, mountpoint);
fuse_teardown_common(fuse, mountpoint);
}
static int fuse_main_common(int argc, char *argv[],
const struct fuse_operations *op, size_t op_size,
void *user_data, int compat)
{
struct fuse *fuse;
char *mountpoint;
int multithreaded;
int res;
fuse = fuse_setup_common(argc, argv, op, op_size, &mountpoint,
&multithreaded, NULL, user_data, compat);
if (fuse == NULL)
return 1;
if (multithreaded)
res = fuse_loop_mt(fuse);
else
res = fuse_loop(fuse);
fuse_teardown_common(fuse, mountpoint);
if (res == -1)
return 1;
return 0;
struct fuse *fuse;
char *mountpoint;
int multithreaded;
int res;
fuse = fuse_setup_common(argc, argv, op, op_size, &mountpoint,
&multithreaded, NULL, user_data, compat);
if (fuse == NULL)
return 1;
if (multithreaded)
res = fuse_loop_mt(fuse);
else
res = fuse_loop(fuse);
fuse_teardown_common(fuse, mountpoint);
if (res == -1)
return 1;
return 0;
}
int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
size_t op_size, void *user_data)
{
return fuse_main_common(argc, argv, op, op_size, user_data, 0);
return fuse_main_common(argc, argv, op, op_size, user_data, 0);
}
#undef fuse_main
int fuse_main(void);
int fuse_main(void)
{
fprintf(stderr, "fuse_main(): This function does not exist\n");
return -1;
fprintf(stderr, "fuse_main(): This function does not exist\n");
return -1;
}
int fuse_version(void)
{
return FUSE_VERSION;
return FUSE_VERSION;
}
#include "fuse_compat.h"
@ -422,9 +422,9 @@ struct fuse *fuse_setup_compat22(int argc, char *argv[],
size_t op_size, char **mountpoint,
int *multithreaded, int *fd)
{
return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
op_size, mountpoint, multithreaded, fd, NULL,
22);
return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
op_size, mountpoint, multithreaded, fd, NULL,
22);
}
struct fuse *fuse_setup_compat2(int argc, char *argv[],
@ -432,39 +432,39 @@ struct fuse *fuse_setup_compat2(int argc, char *argv[],
char **mountpoint, int *multithreaded,
int *fd)
{
return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
sizeof(struct fuse_operations_compat2),
mountpoint, multithreaded, fd, NULL, 21);
return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
sizeof(struct fuse_operations_compat2),
mountpoint, multithreaded, fd, NULL, 21);
}
int fuse_main_real_compat22(int argc, char *argv[],
const struct fuse_operations_compat22 *op,
size_t op_size)
{
return fuse_main_common(argc, argv, (struct fuse_operations *) op,
op_size, NULL, 22);
return fuse_main_common(argc, argv, (struct fuse_operations *) op,
op_size, NULL, 22);
}
void fuse_main_compat1(int argc, char *argv[],
const struct fuse_operations_compat1 *op)
{
fuse_main_common(argc, argv, (struct fuse_operations *) op,
sizeof(struct fuse_operations_compat1), NULL, 11);
fuse_main_common(argc, argv, (struct fuse_operations *) op,
sizeof(struct fuse_operations_compat1), NULL, 11);
}
int fuse_main_compat2(int argc, char *argv[],
const struct fuse_operations_compat2 *op)
{
return fuse_main_common(argc, argv, (struct fuse_operations *) op,
sizeof(struct fuse_operations_compat2), NULL,
21);
return fuse_main_common(argc, argv, (struct fuse_operations *) op,
sizeof(struct fuse_operations_compat2), NULL,
21);
}
int fuse_mount_compat1(const char *mountpoint, const char *args[])
{
/* just ignore mount args for now */
(void) args;
return fuse_mount_compat22(mountpoint, NULL);
/* just ignore mount args for now */
(void) args;
return fuse_mount_compat22(mountpoint, NULL);
}
FUSE_SYMVER(".symver fuse_setup_compat2,__fuse_setup@");
@ -481,28 +481,28 @@ struct fuse *fuse_setup_compat25(int argc, char *argv[],
size_t op_size, char **mountpoint,
int *multithreaded, int *fd)
{
return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
op_size, mountpoint, multithreaded, fd, NULL,
25);
return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
op_size, mountpoint, multithreaded, fd, NULL,
25);
}
int fuse_main_real_compat25(int argc, char *argv[],
const struct fuse_operations_compat25 *op,
size_t op_size)
{
return fuse_main_common(argc, argv, (struct fuse_operations *) op,
op_size, NULL, 25);
return fuse_main_common(argc, argv, (struct fuse_operations *) op,
op_size, NULL, 25);
}
void fuse_teardown_compat22(struct fuse *fuse, int fd, char *mountpoint)
{
(void) fd;
fuse_teardown_common(fuse, mountpoint);
(void) fd;
fuse_teardown_common(fuse, mountpoint);
}
int fuse_mount_compat25(const char *mountpoint, struct fuse_args *args)
{
return fuse_kern_mount(mountpoint, args);
return fuse_kern_mount(mountpoint, args);
}
FUSE_SYMVER(".symver fuse_setup_compat25,fuse_setup@FUSE_2.5");

590
libfuse/lib/mount_bsd.c
View File

@ -28,364 +28,364 @@
#define FUSE_DEV_TRUNK "/dev/fuse"
enum {
KEY_ALLOW_ROOT,
KEY_RO,
KEY_HELP,
KEY_VERSION,
KEY_KERN
KEY_ALLOW_ROOT,
KEY_RO,
KEY_HELP,
KEY_VERSION,
KEY_KERN
};
struct mount_opts {
int allow_other;
int allow_root;
int ishelp;
char *kernel_opts;
int allow_other;
int allow_root;
int ishelp;
char *kernel_opts;
};
#define FUSE_DUAL_OPT_KEY(templ, key) \
FUSE_OPT_KEY(templ, key), FUSE_OPT_KEY("no" templ, key)
FUSE_OPT_KEY(templ, key), FUSE_OPT_KEY("no" templ, key)
static const struct fuse_opt fuse_mount_opts[] = {
{ "allow_other", offsetof(struct mount_opts, allow_other), 1 },
{ "allow_root", offsetof(struct mount_opts, allow_root), 1 },
FUSE_OPT_KEY("allow_root", KEY_ALLOW_ROOT),
FUSE_OPT_KEY("-r", KEY_RO),
FUSE_OPT_KEY("-h", KEY_HELP),
FUSE_OPT_KEY("--help", KEY_HELP),
FUSE_OPT_KEY("-V", KEY_VERSION),
FUSE_OPT_KEY("--version", KEY_VERSION),
/* standard FreeBSD mount options */
FUSE_DUAL_OPT_KEY("dev", KEY_KERN),
FUSE_DUAL_OPT_KEY("async", KEY_KERN),
FUSE_DUAL_OPT_KEY("atime", KEY_KERN),
FUSE_DUAL_OPT_KEY("dev", KEY_KERN),
FUSE_DUAL_OPT_KEY("exec", KEY_KERN),
FUSE_DUAL_OPT_KEY("suid", KEY_KERN),
FUSE_DUAL_OPT_KEY("symfollow", KEY_KERN),
FUSE_DUAL_OPT_KEY("rdonly", KEY_KERN),
FUSE_DUAL_OPT_KEY("sync", KEY_KERN),
FUSE_DUAL_OPT_KEY("union", KEY_KERN),
FUSE_DUAL_OPT_KEY("userquota", KEY_KERN),
FUSE_DUAL_OPT_KEY("groupquota", KEY_KERN),
FUSE_DUAL_OPT_KEY("clusterr", KEY_KERN),
FUSE_DUAL_OPT_KEY("clusterw", KEY_KERN),
FUSE_DUAL_OPT_KEY("suiddir", KEY_KERN),
FUSE_DUAL_OPT_KEY("snapshot", KEY_KERN),
FUSE_DUAL_OPT_KEY("multilabel", KEY_KERN),
FUSE_DUAL_OPT_KEY("acls", KEY_KERN),
FUSE_DUAL_OPT_KEY("force", KEY_KERN),
FUSE_DUAL_OPT_KEY("update", KEY_KERN),
FUSE_DUAL_OPT_KEY("ro", KEY_KERN),
FUSE_DUAL_OPT_KEY("rw", KEY_KERN),
FUSE_DUAL_OPT_KEY("auto", KEY_KERN),
/* options supported under both Linux and FBSD */
FUSE_DUAL_OPT_KEY("allow_other", KEY_KERN),
FUSE_DUAL_OPT_KEY("default_permissions",KEY_KERN),
FUSE_OPT_KEY("max_read=", KEY_KERN),
FUSE_OPT_KEY("subtype=", KEY_KERN),
/* FBSD FUSE specific mount options */
FUSE_DUAL_OPT_KEY("private", KEY_KERN),
FUSE_DUAL_OPT_KEY("neglect_shares", KEY_KERN),
FUSE_DUAL_OPT_KEY("push_symlinks_in", KEY_KERN),
FUSE_OPT_KEY("nosync_unmount", KEY_KERN),
/* stock FBSD mountopt parsing routine lets anything be negated... */
/*
* Linux specific mount options, but let just the mount util
* handle them
*/
FUSE_OPT_KEY("fsname=", KEY_KERN),
FUSE_OPT_KEY("nonempty", KEY_KERN),
FUSE_OPT_KEY("large_read", KEY_KERN),
FUSE_OPT_END
{ "allow_other", offsetof(struct mount_opts, allow_other), 1 },
{ "allow_root", offsetof(struct mount_opts, allow_root), 1 },
FUSE_OPT_KEY("allow_root", KEY_ALLOW_ROOT),
FUSE_OPT_KEY("-r", KEY_RO),
FUSE_OPT_KEY("-h", KEY_HELP),
FUSE_OPT_KEY("--help", KEY_HELP),
FUSE_OPT_KEY("-V", KEY_VERSION),
FUSE_OPT_KEY("--version", KEY_VERSION),
/* standard FreeBSD mount options */
FUSE_DUAL_OPT_KEY("dev", KEY_KERN),
FUSE_DUAL_OPT_KEY("async", KEY_KERN),
FUSE_DUAL_OPT_KEY("atime", KEY_KERN),
FUSE_DUAL_OPT_KEY("dev", KEY_KERN),
FUSE_DUAL_OPT_KEY("exec", KEY_KERN),
FUSE_DUAL_OPT_KEY("suid", KEY_KERN),
FUSE_DUAL_OPT_KEY("symfollow", KEY_KERN),
FUSE_DUAL_OPT_KEY("rdonly", KEY_KERN),
FUSE_DUAL_OPT_KEY("sync", KEY_KERN),
FUSE_DUAL_OPT_KEY("union", KEY_KERN),
FUSE_DUAL_OPT_KEY("userquota", KEY_KERN),
FUSE_DUAL_OPT_KEY("groupquota", KEY_KERN),
FUSE_DUAL_OPT_KEY("clusterr", KEY_KERN),
FUSE_DUAL_OPT_KEY("clusterw", KEY_KERN),
FUSE_DUAL_OPT_KEY("suiddir", KEY_KERN),
FUSE_DUAL_OPT_KEY("snapshot", KEY_KERN),
FUSE_DUAL_OPT_KEY("multilabel", KEY_KERN),
FUSE_DUAL_OPT_KEY("acls", KEY_KERN),
FUSE_DUAL_OPT_KEY("force", KEY_KERN),
FUSE_DUAL_OPT_KEY("update", KEY_KERN),
FUSE_DUAL_OPT_KEY("ro", KEY_KERN),
FUSE_DUAL_OPT_KEY("rw", KEY_KERN),
FUSE_DUAL_OPT_KEY("auto", KEY_KERN),
/* options supported under both Linux and FBSD */
FUSE_DUAL_OPT_KEY("allow_other", KEY_KERN),
FUSE_DUAL_OPT_KEY("default_permissions",KEY_KERN),
FUSE_OPT_KEY("max_read=", KEY_KERN),
FUSE_OPT_KEY("subtype=", KEY_KERN),
/* FBSD FUSE specific mount options */
FUSE_DUAL_OPT_KEY("private", KEY_KERN),
FUSE_DUAL_OPT_KEY("neglect_shares", KEY_KERN),
FUSE_DUAL_OPT_KEY("push_symlinks_in", KEY_KERN),
FUSE_OPT_KEY("nosync_unmount", KEY_KERN),
/* stock FBSD mountopt parsing routine lets anything be negated... */
/*
* Linux specific mount options, but let just the mount util
* handle them
*/
FUSE_OPT_KEY("fsname=", KEY_KERN),
FUSE_OPT_KEY("nonempty", KEY_KERN),
FUSE_OPT_KEY("large_read", KEY_KERN),
FUSE_OPT_END
};
static void mount_help(void)
{
fprintf(stderr,
" -o allow_root allow access to root\n"
);
system(FUSERMOUNT_PROG " --help");
fputc('\n', stderr);
fprintf(stderr,
" -o allow_root allow access to root\n"
);
system(FUSERMOUNT_PROG " --help");
fputc('\n', stderr);
}
static void mount_version(void)
{
system(FUSERMOUNT_PROG " --version");
system(FUSERMOUNT_PROG " --version");
}
static int fuse_mount_opt_proc(void *data, const char *arg, int key,
struct fuse_args *outargs)
{
struct mount_opts *mo = data;
switch (key) {
case KEY_ALLOW_ROOT:
if (fuse_opt_add_opt(&mo->kernel_opts, "allow_other") == -1 ||
fuse_opt_add_arg(outargs, "-oallow_root") == -1)
return -1;
return 0;
case KEY_RO:
arg = "ro";
/* fall through */
case KEY_KERN:
return fuse_opt_add_opt(&mo->kernel_opts, arg);
case KEY_HELP:
mount_help();
mo->ishelp = 1;
break;
case KEY_VERSION:
mount_version();
mo->ishelp = 1;
break;
}
return 1;
struct mount_opts *mo = data;
switch (key) {
case KEY_ALLOW_ROOT:
if (fuse_opt_add_opt(&mo->kernel_opts, "allow_other") == -1 ||
fuse_opt_add_arg(outargs, "-oallow_root") == -1)
return -1;
return 0;
case KEY_RO:
arg = "ro";
/* fall through */
case KEY_KERN:
return fuse_opt_add_opt(&mo->kernel_opts, arg);
case KEY_HELP:
mount_help();
mo->ishelp = 1;
break;
case KEY_VERSION:
mount_version();
mo->ishelp = 1;
break;
}
return 1;
}
void fuse_unmount_compat22(const char *mountpoint)
{
char dev[128];
char *ssc, *umount_cmd;
FILE *sf;
int rv;
char seekscript[] =
/* error message is annoying in help output */
"exec 2>/dev/null; "
"/usr/bin/fstat " FUSE_DEV_TRUNK "* | "
"/usr/bin/awk 'BEGIN{ getline; if (! ($3 == \"PID\" && $10 == \"NAME\")) exit 1; }; "
" { if ($3 == %d) print $10; }' | "
"/usr/bin/sort | "
"/usr/bin/uniq | "
"/usr/bin/awk '{ i += 1; if (i > 1){ exit 1; }; printf; }; END{ if (i == 0) exit 1; }'";
(void) mountpoint;
/*
* If we don't know the fd, we have to resort to the scripted
* solution -- iterating over the fd-s is unpractical, as we
* don't know how many of open files we have. (This could be
* looked up in procfs -- however, that's optional on FBSD; or
* read out from the kmem -- however, that's bound to
* privileges (in fact, that's what happens when we call the
* setgid kmem fstat(1) utility).
*/
if (asprintf(&ssc, seekscript, getpid()) == -1)
return;
errno = 0;
sf = popen(ssc, "r");
free(ssc);
if (! sf)
return;
fgets(dev, sizeof(dev), sf);
rv = pclose(sf);
if (rv)
return;
if (asprintf(&umount_cmd, "/sbin/umount %s", dev) == -1)
return;
system(umount_cmd);
free(umount_cmd);
char dev[128];
char *ssc, *umount_cmd;
FILE *sf;
int rv;
char seekscript[] =
/* error message is annoying in help output */
"exec 2>/dev/null; "
"/usr/bin/fstat " FUSE_DEV_TRUNK "* | "
"/usr/bin/awk 'BEGIN{ getline; if (! ($3 == \"PID\" && $10 == \"NAME\")) exit 1; }; "
" { if ($3 == %d) print $10; }' | "
"/usr/bin/sort | "
"/usr/bin/uniq | "
"/usr/bin/awk '{ i += 1; if (i > 1){ exit 1; }; printf; }; END{ if (i == 0) exit 1; }'";
(void) mountpoint;
/*
* If we don't know the fd, we have to resort to the scripted
* solution -- iterating over the fd-s is unpractical, as we
* don't know how many of open files we have. (This could be
* looked up in procfs -- however, that's optional on FBSD; or
* read out from the kmem -- however, that's bound to
* privileges (in fact, that's what happens when we call the
* setgid kmem fstat(1) utility).
*/
if (asprintf(&ssc, seekscript, getpid()) == -1)
return;
errno = 0;
sf = popen(ssc, "r");
free(ssc);
if (! sf)
return;
fgets(dev, sizeof(dev), sf);
rv = pclose(sf);
if (rv)
return;
if (asprintf(&umount_cmd, "/sbin/umount %s", dev) == -1)
return;
system(umount_cmd);
free(umount_cmd);
}
static void do_unmount(char *dev, int fd)
{
char device_path[SPECNAMELEN + 12];
const char *argv[4];
const char umount_cmd[] = "/sbin/umount";
pid_t pid;
char device_path[SPECNAMELEN + 12];
const char *argv[4];
const char umount_cmd[] = "/sbin/umount";
pid_t pid;
snprintf(device_path, SPECNAMELEN + 12, _PATH_DEV "%s", dev);
snprintf(device_path, SPECNAMELEN + 12, _PATH_DEV "%s", dev);
argv[0] = umount_cmd;
argv[1] = "-f";
argv[2] = device_path;
argv[3] = NULL;
argv[0] = umount_cmd;
argv[1] = "-f";
argv[2] = device_path;
argv[3] = NULL;
pid = fork();
pid = fork();
if (pid == -1)
return;
if (pid == -1)
return;
if (pid == 0) {
close(fd);
execvp(umount_cmd, (char **)argv);
exit(1);
}
if (pid == 0) {
close(fd);
execvp(umount_cmd, (char **)argv);
exit(1);
}
waitpid(pid, NULL, 0);
waitpid(pid, NULL, 0);
}
void fuse_kern_unmount(const char *mountpoint, int fd)
{
char *ep, dev[128];
struct stat sbuf;
char *ep, dev[128];
struct stat sbuf;
(void)mountpoint;
(void)mountpoint;
if (fstat(fd, &sbuf) == -1)
goto out;
if (fstat(fd, &sbuf) == -1)
goto out;
devname_r(sbuf.st_rdev, S_IFCHR, dev, 128);
devname_r(sbuf.st_rdev, S_IFCHR, dev, 128);
if (strncmp(dev, "fuse", 4))
goto out;
if (strncmp(dev, "fuse", 4))
goto out;
strtol(dev + 4, &ep, 10);
if (*ep != '\0')
goto out;
strtol(dev + 4, &ep, 10);
if (*ep != '\0')
goto out;
do_unmount(dev, fd);
do_unmount(dev, fd);
out:
close(fd);
out:
close(fd);
}
/* Check if kernel is doing init in background */
static int init_backgrounded(void)
{
unsigned ibg, len;
unsigned ibg, len;
len = sizeof(ibg);
len = sizeof(ibg);
if (sysctlbyname("vfs.fuse.init_backgrounded", &ibg, &len, NULL, 0))
return 0;
if (sysctlbyname("vfs.fuse.init_backgrounded", &ibg, &len, NULL, 0))
return 0;
return ibg;
return ibg;
}
static int fuse_mount_core(const char *mountpoint, const char *opts)
{
const char *mountprog = FUSERMOUNT_PROG;
int fd;
char *fdnam, *dev;
pid_t pid, cpid;
int status;
fdnam = getenv("FUSE_DEV_FD");
if (fdnam) {
char *ep;
fd = strtol(fdnam, &ep, 10);
if (*ep != '\0') {
fprintf(stderr, "invalid value given in FUSE_DEV_FD\n");
return -1;
}
if (fd < 0)
return -1;
goto mount;
}
dev = getenv("FUSE_DEV_NAME");
if (! dev)
dev = (char *)FUSE_DEV_TRUNK;
if ((fd = open(dev, O_RDWR)) < 0) {
perror("fuse: failed to open fuse device");
return -1;
}
mount:
if (getenv("FUSE_NO_MOUNT") || ! mountpoint)
goto out;
pid = fork();
cpid = pid;
if (pid == -1) {
perror("fuse: fork() failed");
close(fd);
return -1;
}
if (pid == 0) {
if (! init_backgrounded()) {
/*
* If init is not backgrounded, we have to
* call the mount util backgrounded, to avoid
* deadlock.
*/
pid = fork();
if (pid == -1) {
perror("fuse: fork() failed");
close(fd);
exit(1);
}
}
if (pid == 0) {
const char *argv[32];
int a = 0;
if (! fdnam && asprintf(&fdnam, "%d", fd) == -1) {
perror("fuse: failed to assemble mount arguments");
exit(1);
}
argv[a++] = mountprog;
if (opts) {
argv[a++] = "-o";
argv[a++] = opts;
}
argv[a++] = fdnam;
argv[a++] = mountpoint;
argv[a++] = NULL;
execvp(mountprog, (char **) argv);
perror("fuse: failed to exec mount program");
exit(1);
}
exit(0);
}
if (waitpid(cpid, &status, 0) == -1 || WEXITSTATUS(status) != 0) {
perror("fuse: failed to mount file system");
close(fd);
return -1;
}
out:
return fd;
const char *mountprog = FUSERMOUNT_PROG;
int fd;
char *fdnam, *dev;
pid_t pid, cpid;
int status;
fdnam = getenv("FUSE_DEV_FD");
if (fdnam) {
char *ep;
fd = strtol(fdnam, &ep, 10);
if (*ep != '\0') {
fprintf(stderr, "invalid value given in FUSE_DEV_FD\n");
return -1;
}
if (fd < 0)
return -1;
goto mount;
}
dev = getenv("FUSE_DEV_NAME");
if (! dev)
dev = (char *)FUSE_DEV_TRUNK;
if ((fd = open(dev, O_RDWR)) < 0) {
perror("fuse: failed to open fuse device");
return -1;
}
mount:
if (getenv("FUSE_NO_MOUNT") || ! mountpoint)
goto out;
pid = fork();
cpid = pid;
if (pid == -1) {
perror("fuse: fork() failed");
close(fd);
return -1;
}
if (pid == 0) {
if (! init_backgrounded()) {
/*
* If init is not backgrounded, we have to
* call the mount util backgrounded, to avoid
* deadlock.
*/
pid = fork();
if (pid == -1) {
perror("fuse: fork() failed");
close(fd);
exit(1);
}
}
if (pid == 0) {
const char *argv[32];
int a = 0;
if (! fdnam && asprintf(&fdnam, "%d", fd) == -1) {
perror("fuse: failed to assemble mount arguments");
exit(1);
}
argv[a++] = mountprog;
if (opts) {
argv[a++] = "-o";
argv[a++] = opts;
}
argv[a++] = fdnam;
argv[a++] = mountpoint;
argv[a++] = NULL;
execvp(mountprog, (char **) argv);
perror("fuse: failed to exec mount program");
exit(1);
}
exit(0);
}
if (waitpid(cpid, &status, 0) == -1 || WEXITSTATUS(status) != 0) {
perror("fuse: failed to mount file system");
close(fd);
return -1;
}
out:
return fd;
}
int fuse_kern_mount(const char *mountpoint, struct fuse_args *args)
{
struct mount_opts mo;
int res = -1;
memset(&mo, 0, sizeof(mo));
/* mount util should not try to spawn the daemon */
setenv("MOUNT_FUSEFS_SAFE", "1", 1);
/* to notify the mount util it's called from lib */
setenv("MOUNT_FUSEFS_CALL_BY_LIB", "1", 1);
if (args &&
fuse_opt_parse(args, &mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)
return -1;
if (mo.allow_other && mo.allow_root) {
fprintf(stderr, "fuse: 'allow_other' and 'allow_root' options are mutually exclusive\n");
goto out;
}
if (mo.ishelp)
return 0;
res = fuse_mount_core(mountpoint, mo.kernel_opts);
out:
free(mo.kernel_opts);
return res;
struct mount_opts mo;
int res = -1;
memset(&mo, 0, sizeof(mo));
/* mount util should not try to spawn the daemon */
setenv("MOUNT_FUSEFS_SAFE", "1", 1);
/* to notify the mount util it's called from lib */
setenv("MOUNT_FUSEFS_CALL_BY_LIB", "1", 1);
if (args &&
fuse_opt_parse(args, &mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)
return -1;
if (mo.allow_other && mo.allow_root) {
fprintf(stderr, "fuse: 'allow_other' and 'allow_root' options are mutually exclusive\n");
goto out;
}
if (mo.ishelp)
return 0;
res = fuse_mount_core(mountpoint, mo.kernel_opts);
out:
free(mo.kernel_opts);
return res;
}
FUSE_SYMVER(".symver fuse_unmount_compat22,fuse_unmount@FUSE_2.2");

992
libfuse/lib/mount_generic.c
File diff suppressed because it is too large
View File

554
libfuse/lib/mount_util.c
View File

@ -31,333 +31,333 @@
#else
static int mtab_needs_update(const char *mnt)
{
int res;
struct stat stbuf;
/* If mtab is within new mount, don't touch it */
if (strncmp(mnt, _PATH_MOUNTED, strlen(mnt)) == 0 &&
_PATH_MOUNTED[strlen(mnt)] == '/')
return 0;
/*
* Skip mtab update if /etc/mtab:
*
* - doesn't exist,
* - is a symlink,
* - is on a read-only filesystem.
*/
res = lstat(_PATH_MOUNTED, &stbuf);
if (res == -1) {
if (errno == ENOENT)
return 0;
} else {
uid_t ruid;
int err;
if (S_ISLNK(stbuf.st_mode))
return 0;
ruid = getuid();
if (ruid != 0)
setreuid(0, -1);
res = access(_PATH_MOUNTED, W_OK);
err = (res == -1) ? errno : 0;
if (ruid != 0)
setreuid(ruid, -1);
if (err == EROFS)
return 0;
}
return 1;
int res;
struct stat stbuf;
/* If mtab is within new mount, don't touch it */
if (strncmp(mnt, _PATH_MOUNTED, strlen(mnt)) == 0 &&
_PATH_MOUNTED[strlen(mnt)] == '/')
return 0;
/*
* Skip mtab update if /etc/mtab:
*
* - doesn't exist,
* - is a symlink,
* - is on a read-only filesystem.
*/
res = lstat(_PATH_MOUNTED, &stbuf);
if (res == -1) {
if (errno == ENOENT)
return 0;
} else {
uid_t ruid;
int err;
if (S_ISLNK(stbuf.st_mode))
return 0;
ruid = getuid();
if (ruid != 0)
setreuid(0, -1);
res = access(_PATH_MOUNTED, W_OK);
err = (res == -1) ? errno : 0;
if (ruid != 0)
setreuid(ruid, -1);
if (err == EROFS)
return 0;
}
return 1;
}
#endif /* __NetBSD__ */
static int add_mount(const char *progname, const char *fsname,
const char *mnt, const char *type, const char *opts)
const char *mnt, const char *type, const char *opts)
{
int res;
int status;
sigset_t blockmask;
sigset_t oldmask;
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
if (res == -1) {
fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
return -1;
}
res = fork();
if (res == -1) {
fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
goto out_restore;
}
if (res == 0) {
char *env = NULL;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
setuid(geteuid());
execle("/bin/mount", "/bin/mount", "--no-canonicalize", "-i",
"-f", "-t", type, "-o", opts, fsname, mnt, NULL, &env);
fprintf(stderr, "%s: failed to execute /bin/mount: %s\n",
progname, strerror(errno));
exit(1);
}
res = waitpid(res, &status, 0);
if (res == -1)
fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
if (status != 0)
res = -1;
int res;
int status;
sigset_t blockmask;
sigset_t oldmask;
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
if (res == -1) {
fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
return -1;
}
res = fork();
if (res == -1) {
fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
goto out_restore;
}
if (res == 0) {
char *env = NULL;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
setuid(geteuid());
execle("/bin/mount", "/bin/mount", "--no-canonicalize", "-i",
"-f", "-t", type, "-o", opts, fsname, mnt, NULL, &env);
fprintf(stderr, "%s: failed to execute /bin/mount: %s\n",
progname, strerror(errno));
exit(1);
}
res = waitpid(res, &status, 0);
if (res == -1)
fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
if (status != 0)
res = -1;
out_restore:
sigprocmask(SIG_SETMASK, &oldmask, NULL);
sigprocmask(SIG_SETMASK, &oldmask, NULL);
return res;
return res;
}
int fuse_mnt_add_mount(const char *progname, const char *fsname,
const char *mnt, const char *type, const char *opts)
{
if (!mtab_needs_update(mnt))
return 0;
if (!mtab_needs_update(mnt))
return 0;
return add_mount(progname, fsname, mnt, type, opts);
return add_mount(progname, fsname, mnt, type, opts);
}
static int exec_umount(const char *progname, const char *rel_mnt, int lazy)
{
int res;
int status;
sigset_t blockmask;
sigset_t oldmask;
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
if (res == -1) {
fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
return -1;
}
res = fork();
if (res == -1) {
fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
goto out_restore;
}
if (res == 0) {
char *env = NULL;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
setuid(geteuid());
if (lazy) {
execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
"-l", NULL, &env);
} else {
execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
NULL, &env);
}
fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
progname, strerror(errno));
exit(1);
}
res = waitpid(res, &status, 0);
if (res == -1)
fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
if (status != 0) {
res = -1;
}
int res;
int status;
sigset_t blockmask;
sigset_t oldmask;
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
if (res == -1) {
fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
return -1;
}
res = fork();
if (res == -1) {
fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
goto out_restore;
}
if (res == 0) {
char *env = NULL;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
setuid(geteuid());
if (lazy) {
execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
"-l", NULL, &env);
} else {
execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
NULL, &env);
}
fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
progname, strerror(errno));
exit(1);
}
res = waitpid(res, &status, 0);
if (res == -1)
fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
if (status != 0) {
res = -1;
}
out_restore:
sigprocmask(SIG_SETMASK, &oldmask, NULL);
return res;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
return res;
}
int fuse_mnt_umount(const char *progname, const char *abs_mnt,
const char *rel_mnt, int lazy)
{
int res;
int res;
if (!mtab_needs_update(abs_mnt)) {
res = umount2(rel_mnt, lazy ? 2 : 0);
if (res == -1)
fprintf(stderr, "%s: failed to unmount %s: %s\n",
progname, abs_mnt, strerror(errno));
return res;
}
if (!mtab_needs_update(abs_mnt)) {
res = umount2(rel_mnt, lazy ? 2 : 0);
if (res == -1)
fprintf(stderr, "%s: failed to unmount %s: %s\n",
progname, abs_mnt, strerror(errno));
return res;
}
return exec_umount(progname, rel_mnt, lazy);
return exec_umount(progname, rel_mnt, lazy);
}
static int remove_mount(const char *progname, const char *mnt)
{
int res;
int status;
sigset_t blockmask;
sigset_t oldmask;
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
if (res == -1) {
fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
return -1;
}
res = fork();
if (res == -1) {
fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
goto out_restore;
}
if (res == 0) {
char *env = NULL;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
setuid(geteuid());
execle("/bin/umount", "/bin/umount", "--no-canonicalize", "-i",
"--fake", mnt, NULL, &env);
fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
progname, strerror(errno));
exit(1);
}
res = waitpid(res, &status, 0);
if (res == -1)
fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
if (status != 0)
res = -1;
int res;
int status;
sigset_t blockmask;
sigset_t oldmask;
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
if (res == -1) {
fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
return -1;
}
res = fork();
if (res == -1) {
fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
goto out_restore;
}
if (res == 0) {
char *env = NULL;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
setuid(geteuid());
execle("/bin/umount", "/bin/umount", "--no-canonicalize", "-i",
"--fake", mnt, NULL, &env);
fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
progname, strerror(errno));
exit(1);
}
res = waitpid(res, &status, 0);
if (res == -1)
fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
if (status != 0)
res = -1;
out_restore:
sigprocmask(SIG_SETMASK, &oldmask, NULL);
return res;
sigprocmask(SIG_SETMASK, &oldmask, NULL);
return res;
}
int fuse_mnt_remove_mount(const char *progname, const char *mnt)
{
if (!mtab_needs_update(mnt))
return 0;
if (!mtab_needs_update(mnt))
return 0;
return remove_mount(progname, mnt);
return remove_mount(progname, mnt);
}
char *fuse_mnt_resolve_path(const char *progname, const char *orig)
{
char buf[PATH_MAX];
char *copy;
char *dst;
char *end;
char *lastcomp;
const char *toresolv;
if (!orig[0]) {
fprintf(stderr, "%s: invalid mountpoint '%s'\n", progname,
orig);
return NULL;
}
copy = strdup(orig);
if (copy == NULL) {
fprintf(stderr, "%s: failed to allocate memory\n", progname);
return NULL;
}
toresolv = copy;
lastcomp = NULL;
for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
if (end[0] != '/') {
char *tmp;
end[1] = '\0';
tmp = strrchr(copy, '/');
if (tmp == NULL) {
lastcomp = copy;
toresolv = ".";
} else {
lastcomp = tmp + 1;
if (tmp == copy)
toresolv = "/";
}
if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
lastcomp = NULL;
toresolv = copy;
}
else if (tmp)
tmp[0] = '\0';
}
if (realpath(toresolv, buf) == NULL) {
fprintf(stderr, "%s: bad mount point %s: %s\n", progname, orig,
strerror(errno));
free(copy);
return NULL;
}
if (lastcomp == NULL)
dst = strdup(buf);
else {
dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
if (dst) {
unsigned buflen = strlen(buf);
if (buflen && buf[buflen-1] == '/')
sprintf(dst, "%s%s", buf, lastcomp);
else
sprintf(dst, "%s/%s", buf, lastcomp);
}
}
free(copy);
if (dst == NULL)
fprintf(stderr, "%s: failed to allocate memory\n", progname);
return dst;
char buf[PATH_MAX];
char *copy;
char *dst;
char *end;
char *lastcomp;
const char *toresolv;
if (!orig[0]) {
fprintf(stderr, "%s: invalid mountpoint '%s'\n", progname,
orig);
return NULL;
}
copy = strdup(orig);
if (copy == NULL) {
fprintf(stderr, "%s: failed to allocate memory\n", progname);
return NULL;
}
toresolv = copy;
lastcomp = NULL;
for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
if (end[0] != '/') {
char *tmp;
end[1] = '\0';
tmp = strrchr(copy, '/');
if (tmp == NULL) {
lastcomp = copy;
toresolv = ".";
} else {
lastcomp = tmp + 1;
if (tmp == copy)
toresolv = "/";
}
if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
lastcomp = NULL;
toresolv = copy;
}
else if (tmp)
tmp[0] = '\0';
}
if (realpath(toresolv, buf) == NULL) {
fprintf(stderr, "%s: bad mount point %s: %s\n", progname, orig,
strerror(errno));
free(copy);
return NULL;
}
if (lastcomp == NULL)
dst = strdup(buf);
else {
dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
if (dst) {
unsigned buflen = strlen(buf);
if (buflen && buf[buflen-1] == '/')
sprintf(dst, "%s%s", buf, lastcomp);
else
sprintf(dst, "%s/%s", buf, lastcomp);
}
}
free(copy);
if (dst == NULL)
fprintf(stderr, "%s: failed to allocate memory\n", progname);
return dst;
}
int fuse_mnt_check_empty(const char *progname, const char *mnt,
mode_t rootmode, off_t rootsize)
{
int isempty = 1;
if (S_ISDIR(rootmode)) {
struct dirent *ent;
DIR *dp = opendir(mnt);
if (dp == NULL) {
fprintf(stderr,
"%s: failed to open mountpoint for reading: %s\n",
progname, strerror(errno));
return -1;
}
while ((ent = readdir(dp)) != NULL) {
if (strcmp(ent->d_name, ".") != 0 &&
strcmp(ent->d_name, "..") != 0) {
isempty = 0;
break;
}
}
closedir(dp);
} else if (rootsize)
isempty = 0;
if (!isempty) {
fprintf(stderr, "%s: mountpoint is not empty\n", progname);
fprintf(stderr, "%s: if you are sure this is safe, use the 'nonempty' mount option\n", progname);
return -1;
}
return 0;
int isempty = 1;
if (S_ISDIR(rootmode)) {
struct dirent *ent;
DIR *dp = opendir(mnt);
if (dp == NULL) {
fprintf(stderr,
"%s: failed to open mountpoint for reading: %s\n",
progname, strerror(errno));
return -1;
}
while ((ent = readdir(dp)) != NULL) {
if (strcmp(ent->d_name, ".") != 0 &&
strcmp(ent->d_name, "..") != 0) {
isempty = 0;
break;
}
}
closedir(dp);
} else if (rootsize)
isempty = 0;
if (!isempty) {
fprintf(stderr, "%s: mountpoint is not empty\n", progname);
fprintf(stderr, "%s: if you are sure this is safe, use the 'nonempty' mount option\n", progname);
return -1;
}
return 0;
}
int fuse_mnt_check_fuseblk(void)
{
char buf[256];
FILE *f = fopen("/proc/filesystems", "r");
if (!f)
return 1;
while (fgets(buf, sizeof(buf), f))
if (strstr(buf, "fuseblk\n")) {
fclose(f);
return 1;
}
fclose(f);
return 0;
char buf[256];
FILE *f = fopen("/proc/filesystems", "r");
if (!f)
return 1;
while (fgets(buf, sizeof(buf), f))
if (strstr(buf, "fuseblk\n")) {
fclose(f);
return 1;
}
fclose(f);
return 0;
}

694
libfuse/lib/ulockmgr.c
View File

@ -22,28 +22,28 @@
#include <sys/wait.h>
struct message {
unsigned intr : 1;
unsigned nofd : 1;
pthread_t thr;
int cmd;
int fd;
struct flock lock;
int error;
unsigned intr : 1;
unsigned nofd : 1;
pthread_t thr;
int cmd;
int fd;
struct flock lock;
int error;
};
struct fd_store {
struct fd_store *next;
int fd;
int inuse;
struct fd_store *next;
int fd;
int inuse;
};
struct owner {
struct owner *next;
struct owner *prev;
struct fd_store *fds;
void *id;
size_t id_len;
int cfd;
struct owner *next;
struct owner *prev;
struct fd_store *fds;
void *id;
size_t id_len;
int cfd;
};
static pthread_mutex_t ulockmgr_lock;
@ -54,19 +54,19 @@ static struct owner owner_list = { .next = &owner_list, .prev = &owner_list };
static void list_del_owner(struct owner *owner)
{
struct owner *prev = owner->prev;
struct owner *next = owner->next;
prev->next = next;
next->prev = prev;
struct owner *prev = owner->prev;
struct owner *next = owner->next;
prev->next = next;
next->prev = prev;
}
static void list_add_owner(struct owner *owner, struct owner *next)
{
struct owner *prev = next->prev;
owner->next = next;
owner->prev = prev;
prev->next = owner;
next->prev = owner;
struct owner *prev = next->prev;
owner->next = next;
owner->prev = prev;
prev->next = owner;
next->prev = owner;
}
/*
@ -77,368 +77,368 @@ static void list_add_owner(struct owner *owner, struct owner *next)
*/
static int do_recv(int sock, void *buf, size_t len, int flags)
{
int res = recv(sock, buf, len, flags);
if (res == 0)
res = recv(sock, buf, len, flags);
int res = recv(sock, buf, len, flags);
if (res == 0)
res = recv(sock, buf, len, flags);
return res;
return res;
}
static int ulockmgr_send_message(int sock, void *buf, size_t buflen,
int *fdp, int numfds)
{
struct msghdr msg;
struct cmsghdr *p_cmsg;
struct iovec vec;
size_t cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_SEND_FDS) / sizeof(size_t)];
int res;
assert(numfds <= MAX_SEND_FDS);
msg.msg_control = cmsgbuf;
msg.msg_controllen = sizeof(cmsgbuf);
p_cmsg = CMSG_FIRSTHDR(&msg);
p_cmsg->cmsg_level = SOL_SOCKET;
p_cmsg->cmsg_type = SCM_RIGHTS;
p_cmsg->cmsg_len = CMSG_LEN(sizeof(int) * numfds);
memcpy(CMSG_DATA(p_cmsg), fdp, sizeof(int) * numfds);
msg.msg_controllen = p_cmsg->cmsg_len;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
vec.iov_base = buf;
vec.iov_len = buflen;
res = sendmsg(sock, &msg, MSG_NOSIGNAL);
if (res == -1) {
perror("libulockmgr: sendmsg");
return -1;
}
if ((size_t) res != buflen) {
fprintf(stderr, "libulockmgr: sendmsg short\n");
return -1;
}
return 0;
struct msghdr msg;
struct cmsghdr *p_cmsg;
struct iovec vec;
size_t cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_SEND_FDS) / sizeof(size_t)];
int res;
assert(numfds <= MAX_SEND_FDS);
msg.msg_control = cmsgbuf;
msg.msg_controllen = sizeof(cmsgbuf);
p_cmsg = CMSG_FIRSTHDR(&msg);
p_cmsg->cmsg_level = SOL_SOCKET;
p_cmsg->cmsg_type = SCM_RIGHTS;
p_cmsg->cmsg_len = CMSG_LEN(sizeof(int) * numfds);
memcpy(CMSG_DATA(p_cmsg), fdp, sizeof(int) * numfds);
msg.msg_controllen = p_cmsg->cmsg_len;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
vec.iov_base = buf;
vec.iov_len = buflen;
res = sendmsg(sock, &msg, MSG_NOSIGNAL);
if (res == -1) {
perror("libulockmgr: sendmsg");
return -1;
}
if ((size_t) res != buflen) {
fprintf(stderr, "libulockmgr: sendmsg short\n");
return -1;
}
return 0;
}
static int ulockmgr_start_daemon(void)
{
int sv[2];
int res;
char tmp[64];
res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (res == -1) {
perror("libulockmgr: socketpair");
return -1;
}
snprintf(tmp, sizeof(tmp), "exec ulockmgr_server %i", sv[0]);
res = system(tmp);
close(sv[0]);
if (res == -1 || !WIFEXITED(res) || WEXITSTATUS(res) != 0) {
close(sv[1]);
return -1;
}
ulockmgr_cfd = sv[1];
return 0;
int sv[2];
int res;
char tmp[64];
res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (res == -1) {
perror("libulockmgr: socketpair");
return -1;
}
snprintf(tmp, sizeof(tmp), "exec ulockmgr_server %i", sv[0]);
res = system(tmp);
close(sv[0]);
if (res == -1 || !WIFEXITED(res) || WEXITSTATUS(res) != 0) {
close(sv[1]);
return -1;
}
ulockmgr_cfd = sv[1];
return 0;
}
static struct owner *ulockmgr_new_owner(const void *id, size_t id_len)
{
int sv[2];
int res;
char c = 'm';
struct owner *o;
if (ulockmgr_cfd == -1 && ulockmgr_start_daemon() == -1)
return NULL;
o = calloc(1, sizeof(struct owner) + id_len);
if (!o) {
fprintf(stderr, "libulockmgr: failed to allocate memory\n");
return NULL;
}
o->id = o + 1;
o->id_len = id_len;
res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (res == -1) {
perror("libulockmgr: socketpair");
goto out_free;
}
res = ulockmgr_send_message(ulockmgr_cfd, &c, sizeof(c), &sv[0], 1);
close(sv[0]);
if (res == -1) {
close(ulockmgr_cfd);
ulockmgr_cfd = -1;
goto out_close;
}
o->cfd = sv[1];
memcpy(o->id, id, id_len);
list_add_owner(o, &owner_list);
return o;
out_close:
close(sv[1]);
out_free:
free(o);
return NULL;
int sv[2];
int res;
char c = 'm';
struct owner *o;
if (ulockmgr_cfd == -1 && ulockmgr_start_daemon() == -1)
return NULL;
o = calloc(1, sizeof(struct owner) + id_len);
if (!o) {
fprintf(stderr, "libulockmgr: failed to allocate memory\n");
return NULL;
}
o->id = o + 1;
o->id_len = id_len;
res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (res == -1) {
perror("libulockmgr: socketpair");
goto out_free;
}
res = ulockmgr_send_message(ulockmgr_cfd, &c, sizeof(c), &sv[0], 1);
close(sv[0]);
if (res == -1) {
close(ulockmgr_cfd);
ulockmgr_cfd = -1;
goto out_close;
}
o->cfd = sv[1];
memcpy(o->id, id, id_len);
list_add_owner(o, &owner_list);
return o;
out_close:
close(sv[1]);
out_free:
free(o);
return NULL;
}
static int ulockmgr_send_request(struct message *msg, const void *id,
size_t id_len)
{
int sv[2];
int cfd;
struct owner *o;
struct fd_store *f = NULL;
struct fd_store *newf = NULL;
struct fd_store **fp;
int fd = msg->fd;
int cmd = msg->cmd;
int res;
int unlockall = (cmd == F_SETLK && msg->lock.l_type == F_UNLCK &&
msg->lock.l_start == 0 && msg->lock.l_len == 0);
for (o = owner_list.next; o != &owner_list; o = o->next)
if (o->id_len == id_len && memcmp(o->id, id, id_len) == 0)
break;
if (o == &owner_list)
o = NULL;
if (!o && cmd != F_GETLK && msg->lock.l_type != F_UNLCK)
o = ulockmgr_new_owner(id, id_len);
if (!o) {
if (cmd == F_GETLK) {
res = fcntl(msg->fd, F_GETLK, &msg->lock);
return (res == -1) ? -errno : 0;
} else if (msg->lock.l_type == F_UNLCK)
return 0;
else
return -ENOLCK;
}
if (unlockall)
msg->nofd = 1;
else {
for (fp = &o->fds; *fp; fp = &(*fp)->next) {
f = *fp;
if (f->fd == fd) {
msg->nofd = 1;
break;
}
}
}
if (!msg->nofd) {
newf = f = calloc(1, sizeof(struct fd_store));
if (!f) {
fprintf(stderr, "libulockmgr: failed to allocate memory\n");
return -ENOLCK;
}
}
res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (res == -1) {
perror("libulockmgr: socketpair");
free(newf);
return -ENOLCK;
}
cfd = sv[1];
sv[1] = msg->fd;
res = ulockmgr_send_message(o->cfd, msg, sizeof(struct message), sv,
msg->nofd ? 1 : 2);
close(sv[0]);
if (res == -1) {
free(newf);
close(cfd);
return -EIO;
}
if (newf) {
newf->fd = msg->fd;
newf->next = o->fds;
o->fds = newf;
}
if (f)
f->inuse++;
res = do_recv(cfd, msg, sizeof(struct message), MSG_WAITALL);
if (res == -1) {
perror("libulockmgr: recv");
msg->error = EIO;
} else if (res != sizeof(struct message)) {
fprintf(stderr, "libulockmgr: recv short\n");
msg->error = EIO;
} else if (cmd == F_SETLKW && msg->error == EAGAIN) {
pthread_mutex_unlock(&ulockmgr_lock);
while (1) {
sigset_t old;
sigset_t unblock;
int errno_save;
sigemptyset(&unblock);
sigaddset(&unblock, SIGUSR1);
pthread_sigmask(SIG_UNBLOCK, &unblock, &old);
res = do_recv(cfd, msg, sizeof(struct message),
MSG_WAITALL);
errno_save = errno;
pthread_sigmask(SIG_SETMASK, &old, NULL);
if (res == sizeof(struct message))
break;
else if (res >= 0) {
fprintf(stderr, "libulockmgr: recv short\n");
msg->error = EIO;
break;
} else if (errno_save != EINTR) {
errno = errno_save;
perror("libulockmgr: recv");
msg->error = EIO;
break;
}
msg->intr = 1;
res = send(o->cfd, msg, sizeof(struct message),
MSG_NOSIGNAL);
if (res == -1) {
perror("libulockmgr: send");
msg->error = EIO;
break;
}
if (res != sizeof(struct message)) {
fprintf(stderr, "libulockmgr: send short\n");
msg->error = EIO;
break;
}
}
pthread_mutex_lock(&ulockmgr_lock);
}
if (f)
f->inuse--;
close(cfd);
if (unlockall) {
for (fp = &o->fds; *fp;) {
f = *fp;
if (f->fd == fd && !f->inuse) {
*fp = f->next;
free(f);
} else
fp = &f->next;
}
if (!o->fds) {
list_del_owner(o);
close(o->cfd);
free(o);
}
/* Force OK on unlock-all, since it _will_ succeed once the
owner is deleted */
msg->error = 0;
}
return -msg->error;
int sv[2];
int cfd;
struct owner *o;
struct fd_store *f = NULL;
struct fd_store *newf = NULL;
struct fd_store **fp;
int fd = msg->fd;
int cmd = msg->cmd;
int res;
int unlockall = (cmd == F_SETLK && msg->lock.l_type == F_UNLCK &&
msg->lock.l_start == 0 && msg->lock.l_len == 0);
for (o = owner_list.next; o != &owner_list; o = o->next)
if (o->id_len == id_len && memcmp(o->id, id, id_len) == 0)
break;
if (o == &owner_list)
o = NULL;
if (!o && cmd != F_GETLK && msg->lock.l_type != F_UNLCK)
o = ulockmgr_new_owner(id, id_len);
if (!o) {
if (cmd == F_GETLK) {
res = fcntl(msg->fd, F_GETLK, &msg->lock);
return (res == -1) ? -errno : 0;
} else if (msg->lock.l_type == F_UNLCK)
return 0;
else
return -ENOLCK;
}
if (unlockall)
msg->nofd = 1;
else {
for (fp = &o->fds; *fp; fp = &(*fp)->next) {
f = *fp;
if (f->fd == fd) {
msg->nofd = 1;
break;
}
}
}
if (!msg->nofd) {
newf = f = calloc(1, sizeof(struct fd_store));
if (!f) {
fprintf(stderr, "libulockmgr: failed to allocate memory\n");
return -ENOLCK;
}
}
res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
if (res == -1) {
perror("libulockmgr: socketpair");
free(newf);
return -ENOLCK;
}
cfd = sv[1];
sv[1] = msg->fd;
res = ulockmgr_send_message(o->cfd, msg, sizeof(struct message), sv,
msg->nofd ? 1 : 2);
close(sv[0]);
if (res == -1) {
free(newf);
close(cfd);
return -EIO;
}
if (newf) {
newf->fd = msg->fd;
newf->next = o->fds;
o->fds = newf;
}
if (f)
f->inuse++;
res = do_recv(cfd, msg, sizeof(struct message), MSG_WAITALL);
if (res == -1) {
perror("libulockmgr: recv");
msg->error = EIO;
} else if (res != sizeof(struct message)) {
fprintf(stderr, "libulockmgr: recv short\n");
msg->error = EIO;
} else if (cmd == F_SETLKW && msg->error == EAGAIN) {
pthread_mutex_unlock(&ulockmgr_lock);
while (1) {
sigset_t old;
sigset_t unblock;
int errno_save;
sigemptyset(&unblock);
sigaddset(&unblock, SIGUSR1);
pthread_sigmask(SIG_UNBLOCK, &unblock, &old);
res = do_recv(cfd, msg, sizeof(struct message),
MSG_WAITALL);
errno_save = errno;
pthread_sigmask(SIG_SETMASK, &old, NULL);
if (res == sizeof(struct message))
break;
else if (res >= 0) {
fprintf(stderr, "libulockmgr: recv short\n");
msg->error = EIO;
break;
} else if (errno_save != EINTR) {
errno = errno_save;
perror("libulockmgr: recv");
msg->error = EIO;
break;
}
msg->intr = 1;
res = send(o->cfd, msg, sizeof(struct message),
MSG_NOSIGNAL);
if (res == -1) {
perror("libulockmgr: send");
msg->error = EIO;
break;
}
if (res != sizeof(struct message)) {
fprintf(stderr, "libulockmgr: send short\n");
msg->error = EIO;
break;
}
}
pthread_mutex_lock(&ulockmgr_lock);
}
if (f)
f->inuse--;
close(cfd);
if (unlockall) {
for (fp = &o->fds; *fp;) {
f = *fp;
if (f->fd == fd && !f->inuse) {
*fp = f->next;
free(f);
} else
fp = &f->next;
}
if (!o->fds) {
list_del_owner(o);
close(o->cfd);
free(o);
}
/* Force OK on unlock-all, since it _will_ succeed once the
owner is deleted */
msg->error = 0;
}
return -msg->error;
}
#ifdef DEBUG
static uint32_t owner_hash(const unsigned char *id, size_t id_len)
{
uint32_t h = 0;
size_t i;
for (i = 0; i < id_len; i++)
h = ((h << 8) | (h >> 24)) ^ id[i];
uint32_t h = 0;
size_t i;
for (i = 0; i < id_len; i++)
h = ((h << 8) | (h >> 24)) ^ id[i];
return h;
return h;
}
#endif
static int ulockmgr_canonicalize(int fd, struct flock *lock)
{
off_t offset;
if (lock->l_whence == SEEK_CUR) {
offset = lseek(fd, 0, SEEK_CUR);
if (offset == (off_t) -1)
return -errno;
} else if (lock->l_whence == SEEK_END) {
struct stat stbuf;
int res = fstat(fd, &stbuf);
if (res == -1)
return -errno;
offset = stbuf.st_size;
} else
offset = 0;
lock->l_whence = SEEK_SET;
lock->l_start += offset;
if (lock->l_start < 0)
return -EINVAL;
if (lock->l_len < 0) {
lock->l_start += lock->l_len;
if (lock->l_start < 0)
return -EINVAL;
lock->l_len = -lock->l_len;
}
if (lock->l_len && lock->l_start + lock->l_len - 1 < 0)
return -EINVAL;
return 0;
off_t offset;
if (lock->l_whence == SEEK_CUR) {
offset = lseek(fd, 0, SEEK_CUR);
if (offset == (off_t) -1)
return -errno;
} else if (lock->l_whence == SEEK_END) {
struct stat stbuf;
int res = fstat(fd, &stbuf);
if (res == -1)
return -errno;
offset = stbuf.st_size;
} else
offset = 0;
lock->l_whence = SEEK_SET;
lock->l_start += offset;
if (lock->l_start < 0)
return -EINVAL;
if (lock->l_len < 0) {
lock->l_start += lock->l_len;
if (lock->l_start < 0)
return -EINVAL;
lock->l_len = -lock->l_len;
}
if (lock->l_len && lock->l_start + lock->l_len - 1 < 0)
return -EINVAL;
return 0;
}
int ulockmgr_op(int fd, int cmd, struct flock *lock, const void *owner,
size_t owner_len)
{
int err;
struct message msg;
sigset_t old;
sigset_t block;
int err;
struct message msg;
sigset_t old;
sigset_t block;
if (cmd != F_GETLK && cmd != F_SETLK && cmd != F_SETLKW)
return -EINVAL;
if (cmd != F_GETLK && cmd != F_SETLK && cmd != F_SETLKW)
return -EINVAL;
if (lock->l_type != F_RDLCK && lock->l_type != F_WRLCK &&
lock->l_type != F_UNLCK)
return -EINVAL;
if (lock->l_type != F_RDLCK && lock->l_type != F_WRLCK &&
lock->l_type != F_UNLCK)
return -EINVAL;
if (lock->l_whence != SEEK_SET && lock->l_whence != SEEK_CUR &&
lock->l_whence != SEEK_END)
return -EINVAL;
if (lock->l_whence != SEEK_SET && lock->l_whence != SEEK_CUR &&
lock->l_whence != SEEK_END)
return -EINVAL;
#ifdef DEBUG
fprintf(stderr, "libulockmgr: %i %i %i %lli %lli own: 0x%08x\n",
cmd, lock->l_type, lock->l_whence, lock->l_start, lock->l_len,
owner_hash(owner, owner_len));
fprintf(stderr, "libulockmgr: %i %i %i %lli %lli own: 0x%08x\n",
cmd, lock->l_type, lock->l_whence, lock->l_start, lock->l_len,
owner_hash(owner, owner_len));
#endif
/* Unlock should never block anyway */
if (cmd == F_SETLKW && lock->l_type == F_UNLCK)
cmd = F_SETLK;
memset(&msg, 0, sizeof(struct message));
msg.cmd = cmd;
msg.fd = fd;
msg.lock = *lock;
err = ulockmgr_canonicalize(fd, &msg.lock);
if (err)
return err;
sigemptyset(&block);
sigaddset(&block, SIGUSR1);
pthread_sigmask(SIG_BLOCK, &block, &old);
pthread_mutex_lock(&ulockmgr_lock);
err = ulockmgr_send_request(&msg, owner, owner_len);
pthread_mutex_unlock(&ulockmgr_lock);
pthread_sigmask(SIG_SETMASK, &old, NULL);
if (!err && cmd == F_GETLK) {
if (msg.lock.l_type == F_UNLCK)
lock->l_type = F_UNLCK;
else
*lock = msg.lock;
}
return err;
/* Unlock should never block anyway */
if (cmd == F_SETLKW && lock->l_type == F_UNLCK)
cmd = F_SETLK;
memset(&msg, 0, sizeof(struct message));
msg.cmd = cmd;
msg.fd = fd;
msg.lock = *lock;
err = ulockmgr_canonicalize(fd, &msg.lock);
if (err)
return err;
sigemptyset(&block);
sigaddset(&block, SIGUSR1);
pthread_sigmask(SIG_BLOCK, &block, &old);
pthread_mutex_lock(&ulockmgr_lock);
err = ulockmgr_send_request(&msg, owner, owner_len);
pthread_mutex_unlock(&ulockmgr_lock);
pthread_sigmask(SIG_SETMASK, &old, NULL);
if (!err && cmd == F_GETLK) {
if (msg.lock.l_type == F_UNLCK)
lock->l_type = F_UNLCK;
else
*lock = msg.lock;
}
return err;
}
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