mirror of
https://github.com/trapexit/mergerfs.git
synced 2026-10-19 16:16:48 +00:00
Antonio S. Musumeci
98648ae44b
Several FUSE ops fell back to looking up a FileInfo via state.open_files when the kernel-provided fh was zero, returning -ENOENT if the lookup failed. This path papered over handle-tracking bugs and added cost on every call. Use the handle directly and return -EBADF when it is invalid - the kernel should always hand us a valid fh for an open resource. Also simplify FileInfo::from_fh / DirInfo::from_fh and their to_fh helpers: callers now handle the null-pointer case explicitly so the ASSERT_NOT_NULL checks are redundant. Covers fallocate, fchmod, fchown, fgetattr, flock, ftruncate, futimens, read, release, releasedir, write, statx, ioctl (file + dir), readdir (sequential, concurrent-on-read, concurrent-on-search), and the passthrough fast paths in create/open.
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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ISC License
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Copyright (c) 2026, Antonio SJ Musumeci <trapexit@spawn.link>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "fuse_fchmod.hpp"
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#include "errno.hpp"
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#include "fileinfo.hpp"
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#include "fs_fchmod.hpp"
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#include "state.hpp"
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#include "fuse.h"
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static
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int
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_fchmod(const int fd_,
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const mode_t mode_)
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{
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int rv;
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rv = fs::fchmod(fd_,mode_);
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return rv;
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}
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int
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FUSE::fchmod(const fuse_req_ctx_t *ctx_,
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cu64 fh_,
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const mode_t mode_)
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{
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FileInfo *fi = FileInfo::from_fh(fh_);
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if(not fi)
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return -EBADF;
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return ::_fchmod(fi->fd,mode_);
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}
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