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Remove libfuse abstraction in prep for adding request data

pull/1104/head
Antonio SJ Musumeci 2 years ago
parent
629806e896
commit
7606430188
7 changed files with 996 additions and 1610 deletions
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  1. 102
      libfuse/include/fuse.h
  2. 24
      libfuse/include/fuse_kernel.h
  3. 194
      libfuse/include/fuse_lowlevel.h
  4. 14
      libfuse/include/fuse_pollhandle.h
  5. 1527
      libfuse/lib/fuse.c
  6. 741
      libfuse/lib/fuse_lowlevel.c
  7. 4
      src/mergerfs.cpp

102
libfuse/include/fuse.h
View File

@ -475,9 +475,10 @@ struct fuse_operations
*
* Introduced in version 2.9
*/
int (*write_buf) (const fuse_file_info_t *ffi,
struct fuse_bufvec *buf,
off_t off);
int (*write) (const fuse_file_info_t *ffi,
const char *data,
size_t size,
off_t off);
/** Store data from an open file in a buffer
*
@ -729,101 +730,6 @@ struct fuse_fs;
* fuse_fs_releasedir and fuse_fs_statfs, which return 0.
*/
int fuse_fs_getattr(struct fuse_fs *fs,
const char *path,
struct stat *buf,
fuse_timeouts_t *timeout);
int fuse_fs_fgetattr(struct fuse_fs *fs,
struct stat *buf,
fuse_file_info_t *fi,
fuse_timeouts_t *timeout);
int fuse_fs_rename(struct fuse_fs *fs, const char *oldpath,
const char *newpath);
int fuse_fs_unlink(struct fuse_fs *fs, const char *path);
int fuse_fs_rmdir(struct fuse_fs *fs, const char *path);
int fuse_fs_symlink(struct fuse_fs *fs,
const char *linkname,
const char *path,
struct stat *st,
fuse_timeouts_t *timeouts);
int fuse_fs_link(struct fuse_fs *fs,
const char *oldpath,
const char *newpath,
struct stat *st,
fuse_timeouts_t *timeouts);
int fuse_fs_release(struct fuse_fs *fs,
fuse_file_info_t *fi);
int fuse_fs_open(struct fuse_fs *fs, const char *path,
fuse_file_info_t *fi);
int fuse_fs_read_buf(struct fuse_fs *fs,
struct fuse_bufvec **bufp, size_t size, off_t off,
fuse_file_info_t *fi);
int fuse_fs_write_buf(struct fuse_fs *fs,
struct fuse_bufvec *buf, off_t off,
fuse_file_info_t *fi);
int fuse_fs_fsync(struct fuse_fs *fs, int datasync,
fuse_file_info_t *fi);
int fuse_fs_flush(struct fuse_fs *fs,
fuse_file_info_t *fi);
int fuse_fs_statfs(struct fuse_fs *fs, const char *path, struct statvfs *buf);
int fuse_fs_opendir(struct fuse_fs *fs, const char *path,
fuse_file_info_t *fi);
int fuse_fs_readdir(struct fuse_fs *fs,
fuse_file_info_t *fi,
fuse_dirents_t *buf);
int fuse_fs_fsyncdir(struct fuse_fs *fs, int datasync,
fuse_file_info_t *fi);
int fuse_fs_releasedir(struct fuse_fs *fs,
fuse_file_info_t *fi);
int fuse_fs_create(struct fuse_fs *fs, const char *path, mode_t mode,
fuse_file_info_t *fi);
int fuse_fs_lock(struct fuse_fs *fs,
fuse_file_info_t *fi, int cmd, struct flock *lock);
int fuse_fs_flock(struct fuse_fs *fs,
fuse_file_info_t *fi, int op);
int fuse_fs_chmod(struct fuse_fs *fs, const char *path, mode_t mode);
int fuse_fs_chown(struct fuse_fs *fs, const char *path, uid_t uid, gid_t gid);
int fuse_fs_truncate(struct fuse_fs *fs, const char *path, off_t size);
int fuse_fs_ftruncate(struct fuse_fs *fs, off_t size,
fuse_file_info_t *fi);
int fuse_fs_utimens(struct fuse_fs *fs, const char *path,
const struct timespec tv[2]);
int fuse_fs_access(struct fuse_fs *fs, const char *path, int mask);
int fuse_fs_readlink(struct fuse_fs *fs, const char *path, char *buf,
size_t len);
int fuse_fs_mknod(struct fuse_fs *fs, const char *path, mode_t mode,
dev_t rdev);
int fuse_fs_mkdir(struct fuse_fs *fs, const char *path, mode_t mode);
int fuse_fs_setxattr(struct fuse_fs *fs, const char *path, const char *name,
const char *value, size_t size, int flags);
int fuse_fs_getxattr(struct fuse_fs *fs, const char *path, const char *name,
char *value, size_t size);
int fuse_fs_listxattr(struct fuse_fs *fs, const char *path, char *list,
size_t size);
int fuse_fs_removexattr(struct fuse_fs *fs, const char *path,
const char *name);
int fuse_fs_bmap(struct fuse_fs *fs, const char *path, size_t blocksize,
uint64_t *idx);
int fuse_fs_ioctl(struct fuse_fs *fs, unsigned long cmd, void *arg,
fuse_file_info_t *fi, unsigned int flags,
void *data, uint32_t *out_bufsz);
int fuse_fs_poll(struct fuse_fs *fs,
fuse_file_info_t *fi, fuse_pollhandle_t *ph,
unsigned *reventsp);
int fuse_fs_fallocate(struct fuse_fs *fs, int mode,
off_t offset, off_t length, fuse_file_info_t *fi);
void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn);
void fuse_fs_destroy(struct fuse_fs *fs);
int fuse_fs_prepare_hide(struct fuse_fs *fs, const char *path, uint64_t *fh);
int fuse_fs_free_hide(struct fuse_fs *fs, uint64_t fh);
ssize_t fuse_fs_copy_file_range(struct fuse_fs *fs,
fuse_file_info_t *fi_in, off_t off_in,
fuse_file_info_t *fi_out, off_t off_out,
size_t len, int flags);
int fuse_notify_poll(fuse_pollhandle_t *ph);
/**

24
libfuse/include/fuse_kernel.h
View File

@ -282,18 +282,18 @@ struct fuse_file_lock {
/**
* Bitmasks for fuse_setattr_in.valid
*/
#define FATTR_MODE (1 << 0)
#define FATTR_UID (1 << 1)
#define FATTR_GID (1 << 2)
#define FATTR_SIZE (1 << 3)
#define FATTR_ATIME (1 << 4)
#define FATTR_MTIME (1 << 5)
#define FATTR_FH (1 << 6)
#define FATTR_ATIME_NOW (1 << 7)
#define FATTR_MTIME_NOW (1 << 8)
#define FATTR_LOCKOWNER (1 << 9)
#define FATTR_CTIME (1 << 10)
#define FATTR_KILL_SUIDGID (1 << 11)
#define FATTR_MODE (1 << 0)
#define FATTR_UID (1 << 1)
#define FATTR_GID (1 << 2)
#define FATTR_SIZE (1 << 3)
#define FATTR_ATIME (1 << 4)
#define FATTR_MTIME (1 << 5)
#define FATTR_FH (1 << 6)
#define FATTR_ATIME_NOW (1 << 7)
#define FATTR_MTIME_NOW (1 << 8)
#define FATTR_LOCKOWNER (1 << 9)
#define FATTR_CTIME (1 << 10)
#define FATTR_KILL_SUIDGID (1 << 11)
/**
* Flags returned by the OPEN request

194
libfuse/include/fuse_lowlevel.h
View File

@ -25,6 +25,7 @@
#include "extern_c.h"
#include "fuse_common.h"
#include "fuse_kernel.h"
#include <fcntl.h>
#include <stdint.h>
@ -117,12 +118,6 @@ struct fuse_ctx
mode_t umask;
};
struct fuse_forget_data
{
uint64_t ino;
uint64_t nlookup;
};
/* ----------------------------------------------------------- *
* Request methods and replies *
* ----------------------------------------------------------- */
@ -183,7 +178,8 @@ struct fuse_lowlevel_ops
* @param parent inode number of the parent directory
* @param name the name to look up
*/
void (*lookup)(fuse_req_t req, uint64_t parent, const char *name);
void (*lookup)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Forget about an inode
@ -221,7 +217,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param nlookup the number of lookups to forget
*/
void (*forget)(fuse_req_t req, uint64_t ino, uint64_t nlookup);
void (*forget)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Get file attributes
@ -229,12 +226,9 @@ struct fuse_lowlevel_ops
* Valid replies:
* fuse_reply_attr
* fuse_reply_err
*
* @param req request handle
* @param ino the inode number
* @param fi for future use, currently always NULL
*/
void (*getattr)(fuse_req_t req, uint64_t ino, fuse_file_info_t *fi);
void (*getattr)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Set file attributes
@ -263,8 +257,8 @@ struct fuse_lowlevel_ops
* Changed in version 2.5:
* file information filled in for ftruncate
*/
void (*setattr)(fuse_req_t req, uint64_t ino, struct stat *attr,
int to_set, fuse_file_info_t *fi);
void (*setattr)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Read symbolic link
@ -276,7 +270,8 @@ struct fuse_lowlevel_ops
* @param req request handle
* @param ino the inode number
*/
void (*readlink)(fuse_req_t req, uint64_t ino);
void (*readlink)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Create file node
@ -294,8 +289,8 @@ struct fuse_lowlevel_ops
* @param mode file type and mode with which to create the new file
* @param rdev the device number (only valid if created file is a device)
*/
void (*mknod)(fuse_req_t req, uint64_t parent, const char *name,
mode_t mode, dev_t rdev);
void (*mknod)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Create a directory
@ -309,8 +304,8 @@ struct fuse_lowlevel_ops
* @param name to create
* @param mode with which to create the new file
*/
void (*mkdir)(fuse_req_t req, uint64_t parent, const char *name,
mode_t mode);
void (*mkdir)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Remove a file
@ -327,7 +322,8 @@ struct fuse_lowlevel_ops
* @param parent inode number of the parent directory
* @param name to remove
*/
void (*unlink)(fuse_req_t req, uint64_t parent, const char *name);
void (*unlink)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Remove a directory
@ -344,7 +340,8 @@ struct fuse_lowlevel_ops
* @param parent inode number of the parent directory
* @param name to remove
*/
void (*rmdir)(fuse_req_t req, uint64_t parent, const char *name);
void (*rmdir)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Create a symbolic link
@ -358,8 +355,8 @@ struct fuse_lowlevel_ops
* @param parent inode number of the parent directory
* @param name to create
*/
void (*symlink)(fuse_req_t req, const char *link, uint64_t parent,
const char *name);
void (*symlink)(fuse_req_t req,
struct fuse_in_header *hdr);
/** Rename a file
*
@ -378,8 +375,8 @@ struct fuse_lowlevel_ops
* @param newparent inode number of the new parent directory
* @param newname new name
*/
void (*rename)(fuse_req_t req, uint64_t parent, const char *name,
uint64_t newparent, const char *newname);
void (*rename)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Create a hard link
@ -393,8 +390,8 @@ struct fuse_lowlevel_ops
* @param newparent inode number of the new parent directory
* @param newname new name to create
*/
void (*link)(fuse_req_t req, uint64_t ino, uint64_t newparent,
const char *newname);
void (*link)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Open a file
@ -421,8 +418,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param fi file information
*/
void (*open)(fuse_req_t req, uint64_t ino,
fuse_file_info_t *fi);
void (*open)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Read data
@ -449,8 +446,8 @@ struct fuse_lowlevel_ops
* @param off offset to read from
* @param fi file information
*/
void (*read)(fuse_req_t req, uint64_t ino, size_t size, off_t off,
fuse_file_info_t *fi);
void (*read)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Write data
@ -475,8 +472,8 @@ struct fuse_lowlevel_ops
* @param off offset to write to
* @param fi file information
*/
void (*write)(fuse_req_t req, uint64_t ino, const char *buf,
size_t size, off_t off, fuse_file_info_t *fi);
void (*write)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Flush method
@ -507,8 +504,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param fi file information
*/
void (*flush)(fuse_req_t req, uint64_t ino,
fuse_file_info_t *fi);
void (*flush)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Release an open file
@ -534,8 +531,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param fi file information
*/
void (*release)(fuse_req_t req, uint64_t ino,
fuse_file_info_t *fi);
void (*release)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Synchronize file contents
@ -551,8 +548,8 @@ struct fuse_lowlevel_ops
* @param datasync flag indicating if only data should be flushed
* @param fi file information
*/
void (*fsync)(fuse_req_t req, uint64_t ino, int datasync,
fuse_file_info_t *fi);
void (*fsync)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Open a directory
@ -575,8 +572,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param fi file information
*/
void (*opendir)(fuse_req_t req, uint64_t ino,
fuse_file_info_t *fi);
void (*opendir)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Read directory
@ -599,12 +596,11 @@ struct fuse_lowlevel_ops
* @param off offset to continue reading the directory stream
* @param fi file information
*/
void (*readdir)(fuse_req_t req, uint64_t ino, size_t size, off_t off,
fuse_file_info_t *llffi);
void (*readdir)(fuse_req_t req,
struct fuse_in_header *hdr);
void (*readdir_plus)(fuse_req_t req, uint64_t ino,
size_t size, off_t off,
fuse_file_info_t *ffi);
void (*readdir_plus)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Release an open directory
@ -622,8 +618,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param fi file information
*/
void (*releasedir)(fuse_req_t req, uint64_t ino,
fuse_file_info_t *fi);
void (*releasedir)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Synchronize directory contents
@ -642,8 +638,8 @@ struct fuse_lowlevel_ops
* @param datasync flag indicating if only data should be flushed
* @param fi file information
*/
void (*fsyncdir)(fuse_req_t req, uint64_t ino, int datasync,
fuse_file_info_t *fi);
void (*fsyncdir)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Get file system statistics
@ -655,7 +651,8 @@ struct fuse_lowlevel_ops
* @param req request handle
* @param ino the inode number, zero means "undefined"
*/
void (*statfs)(fuse_req_t req, uint64_t ino);
void (*statfs)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Set an extended attribute
@ -663,8 +660,8 @@ struct fuse_lowlevel_ops
* Valid replies:
* fuse_reply_err
*/
void (*setxattr)(fuse_req_t req, uint64_t ino, const char *name,
const char *value, size_t size, int flags);
void (*setxattr)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Get an extended attribute
@ -689,8 +686,8 @@ struct fuse_lowlevel_ops
* @param name of the extended attribute
* @param size maximum size of the value to send
*/
void (*getxattr)(fuse_req_t req, uint64_t ino, const char *name,
size_t size);
void (*getxattr)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* List extended attribute names
@ -715,7 +712,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param size maximum size of the list to send
*/
void (*listxattr)(fuse_req_t req, uint64_t ino, size_t size);
void (*listxattr)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Remove an extended attribute
@ -727,7 +725,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param name of the extended attribute
*/
void (*removexattr)(fuse_req_t req, uint64_t ino, const char *name);
void (*removexattr)(fuse_req_t req,
const struct fuse_in_header *hdr);
/**
* Check file access permissions
@ -747,7 +746,8 @@ struct fuse_lowlevel_ops
* @param ino the inode number
* @param mask requested access mode
*/
void (*access)(fuse_req_t req, uint64_t ino, int mask);
void (*access)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Create and open a file
@ -782,8 +782,8 @@ struct fuse_lowlevel_ops
* @param mode file type and mode with which to create the new file
* @param fi file information
*/
void (*create)(fuse_req_t req, uint64_t parent, const char *name,
mode_t mode, fuse_file_info_t *fi);
void (*create)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Test for a POSIX file lock
@ -799,9 +799,8 @@ struct fuse_lowlevel_ops
* @param fi file information
* @param lock the region/type to test
*/
void (*getlk)(fuse_req_t req, uint64_t ino,
fuse_file_info_t *fi, struct flock *lock);
void (*getlk)(fuse_req_t req,
const struct fuse_in_header *hdr);
/**
* Acquire, modify or release a POSIX file lock
*
@ -847,8 +846,8 @@ struct fuse_lowlevel_ops
* @param blocksize unit of block index
* @param idx block index within file
*/
void (*bmap)(fuse_req_t req, uint64_t ino, size_t blocksize,
uint64_t idx);
void (*bmap)(fuse_req_t req,
const struct fuse_in_header *hdr);
/**
* Ioctl
@ -877,9 +876,8 @@ struct fuse_lowlevel_ops
* @param in_bufsz number of fetched bytes
* @param out_bufsz maximum size of output data
*/
void (*ioctl)(fuse_req_t req, uint64_t ino, unsigned long cmd, void *arg,
fuse_file_info_t *fi, unsigned flags,
const void *in_buf, uint32_t in_bufsz, uint32_t out_bufsz);
void (*ioctl)(fuse_req_t req,
const struct fuse_in_header *hdr);
/**
* Poll for IO readiness
@ -907,40 +905,8 @@ struct fuse_lowlevel_ops
* @param fi file information
* @param ph poll handle to be used for notification
*/
void (*poll)(fuse_req_t req,
uint64_t ino,
fuse_file_info_t *fi,
fuse_pollhandle_t *ph);
/**
* Write data made available in a buffer
*
* This is a more generic version of the ->write() method. If
* FUSE_CAP_SPLICE_READ is set in fuse_conn_info.want and the
* kernel supports splicing from the fuse device, then the
* data will be made available in pipe for supporting zero
* copy data transfer.
*
* buf->count is guaranteed to be one (and thus buf->idx is
* always zero). The write_buf handler must ensure that
* bufv->off is correctly updated (reflecting the number of
* bytes read from bufv->buf[0]).
*
* Introduced in version 2.9
*
* Valid replies:
* fuse_reply_write
* fuse_reply_err
*
* @param req request handle
* @param ino the inode number
* @param bufv buffer containing the data
* @param off offset to write to
* @param fi file information
*/
void (*write_buf)(fuse_req_t req, uint64_t ino,
struct fuse_bufvec *bufv, off_t off,
fuse_file_info_t *fi);
void (*poll)(fuse_req_t req,
const struct fuse_in_header *hdr);
/**
* Callback function for the retrieve request
@ -974,8 +940,8 @@ struct fuse_lowlevel_ops
*
* @param req request handle
*/
void (*forget_multi)(fuse_req_t req, size_t count,
struct fuse_forget_data *forgets);
void (*forget_multi)(fuse_req_t req,
struct fuse_in_header *hdr);
/**
* Acquire, modify or release a BSD file lock
@ -1014,8 +980,8 @@ struct fuse_lowlevel_ops
* @param mode determines the operation to be performed on the given range,
* see fallocate(2)
*/
void (*fallocate)(fuse_req_t req, uint64_t ino, int mode,
off_t offset, off_t length, fuse_file_info_t *fi);
void (*fallocate)(fuse_req_t req,
const struct fuse_in_header *hdr);
/**
* Copy a range of data from one file to another
@ -1053,15 +1019,8 @@ struct fuse_lowlevel_ops
* @param len maximum size of the data to copy
* @param flags passed along with the copy_file_range() syscall
*/
void (*copy_file_range)(fuse_req_t req,
uint64_t ino_in,
off_t off_in,
fuse_file_info_t *fi_in,
uint64_t ino_out,
off_t off_out,
fuse_file_info_t *fi_out,
size_t len,
int flags);
void (*copy_file_range)(fuse_req_t req,
const struct fuse_in_header *hdr);
};
/**
@ -1164,7 +1123,8 @@ int fuse_reply_readlink(fuse_req_t req, const char *link);
* @param fi file information
* @return zero for success, -errno for failure to send reply
*/
int fuse_reply_open(fuse_req_t req, const fuse_file_info_t *fi);
int fuse_reply_open(fuse_req_t req,
const fuse_file_info_t *fi);
/**
* Reply with number of bytes written

14
libfuse/include/fuse_pollhandle.h
View File

@ -0,0 +1,14 @@
#pragma once
#include <stdint.h>
struct fuse_chan;
struct fuse_ll;
typedef struct fuse_pollhandle_t fuse_pollhandle_t;
struct fuse_pollhandle_t
{
uint64_t kh;
struct fuse_chan *ch;
struct fuse_ll *f;
};

1527
libfuse/lib/fuse.c
File diff suppressed because it is too large
View File

741
libfuse/lib/fuse_lowlevel.c
File diff suppressed because it is too large
View File

4
src/mergerfs.cpp
View File

@ -66,7 +66,7 @@
#include "fuse_truncate.hpp"
#include "fuse_unlink.hpp"
#include "fuse_utimens.hpp"
#include "fuse_write_buf.hpp"
#include "fuse_write.hpp"
#include "fuse.h"
@ -129,7 +129,7 @@ namespace l
ops_.truncate = FUSE::truncate;
ops_.unlink = FUSE::unlink;
ops_.utimens = FUSE::utimens;
ops_.write_buf = (nullrw_ ? FUSE::write_buf_null : FUSE::write_buf);
ops_.write = (nullrw_ ? FUSE::write_null : FUSE::write);
return;
}

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