mirror of https://github.com/trapexit/mergerfs.git
Antonio SJ Musumeci
2 years ago
11 changed files with 193 additions and 4159 deletions
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3547libfuse/ChangeLog
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1libfuse/Makefile
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257libfuse/include/fuse_lowlevel.h
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14libfuse/lib/fuse.c
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14libfuse/lib/fuse_i.h
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103libfuse/lib/fuse_kern_chan.c
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17libfuse/lib/fuse_loop_mt.c
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40libfuse/lib/fuse_lowlevel.c
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94libfuse/lib/fuse_mt.c
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210libfuse/lib/fuse_session.c
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15libfuse/lib/helper.c
3547
libfuse/ChangeLog
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@ -1,103 +0,0 @@ |
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/* |
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FUSE: Filesystem in Userspace |
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Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> |
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This program can be distributed under the terms of the GNU LGPLv2. |
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See the file COPYING.LIB |
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*/ |
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#include "fuse_lowlevel.h" |
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#include "fuse_kernel.h" |
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#include "fuse_i.h" |
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#include <stdio.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include <assert.h> |
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static int fuse_kern_chan_receive(struct fuse_chan **chp, char *buf, |
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size_t size) |
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{ |
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struct fuse_chan *ch = *chp; |
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int err; |
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ssize_t res; |
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struct fuse_session *se = fuse_chan_session(ch); |
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assert(se != NULL); |
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restart: |
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res = read(fuse_chan_fd(ch), buf, size); |
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err = errno; |
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if (fuse_session_exited(se)) |
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return 0; |
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if (res == -1) { |
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/* ENOENT means the operation was interrupted, it's safe |
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to restart */ |
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if (err == ENOENT) |
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goto restart; |
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if (err == ENODEV) { |
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fuse_session_exit(se); |
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return 0; |
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} |
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/* Errors occurring during normal operation: EINTR (read |
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interrupted), EAGAIN (nonblocking I/O), ENODEV (filesystem |
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umounted) */ |
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if (err != EINTR && err != EAGAIN) |
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perror("fuse: reading device"); |
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return -err; |
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} |
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if ((size_t) res < sizeof(struct fuse_in_header)) { |
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fprintf(stderr, "short read on fuse device\n"); |
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return -EIO; |
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} |
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return res; |
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} |
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static int fuse_kern_chan_send(struct fuse_chan *ch, const struct iovec iov[], |
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size_t count) |
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{ |
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if (iov) { |
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ssize_t res = writev(fuse_chan_fd(ch), iov, count); |
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int err = errno; |
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if (res == -1) { |
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struct fuse_session *se = fuse_chan_session(ch); |
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assert(se != NULL); |
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/* ENOENT means the operation was interrupted */ |
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if (!fuse_session_exited(se) && err != ENOENT) |
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perror("fuse: writing device"); |
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return -err; |
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} |
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} |
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return 0; |
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} |
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static void fuse_kern_chan_destroy(struct fuse_chan *ch) |
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{ |
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int fd = fuse_chan_fd(ch); |
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if (fd != -1) |
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close(fd); |
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} |
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struct fuse_chan * |
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fuse_kern_chan_new(int fd_) |
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{ |
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long pagesize; |
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size_t bufsize; |
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struct fuse_chan_ops op = |
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{ |
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.receive = fuse_kern_chan_receive, |
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.send = fuse_kern_chan_send, |
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.destroy = fuse_kern_chan_destroy, |
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}; |
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pagesize = sysconf(_SC_PAGESIZE); |
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bufsize = ((FUSE_MAX_MAX_PAGES * pagesize) + 0x1000); |
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return fuse_chan_new(&op, fd_, bufsize, NULL); |
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} |
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