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path: root/internal/fusefrontend/file.go
AgeCommit message (Collapse)Author
2016-07-03syscallcompat: move syscall wrapper to their own packageJakob Unterwurzacher
We will get more of them as OSX also lacks support for openat.
2016-07-02fusefrontend: add fallocate supportJakob Unterwurzacher
Mode=0 (default) and mode=1 (keep size) are supported. The patch includes test cases and the whole thing passed xfstests. Fixes https://github.com/rfjakob/gocryptfs/issues/1 .
2016-07-02fusefronted: move Truncate() and Allocate() to their own fileJakob Unterwurzacher
These are large complicated implementations that will share some code.
2016-07-02contentenc: rename PlaintextRange and CiphertextRangeJakob Unterwurzacher
The name could be misunderstood and actually caused a bug: doWrite used to always preallocate 4128 instead of the actual data length.
2016-07-01fusefrontend: coalesce grows in Truncate()Jakob Unterwurzacher
We were growing the file block-by-block which was pretty inefficient. We now coalesce all the grows into a single Ftruncate. Also simplifies the code! Simplistic benchmark: Before: $ time truncate -s 1000M foo real 0m0.568s After: $ time truncate -s 1000M foo real 0m0.205s
2016-07-01fusefrontend: better comments for TruncateJakob Unterwurzacher
2016-06-26main, fusefrontend: enable suid functionalityJakob Unterwurzacher
FUSE filesystems are mounted with "nosuid" by default. If we run as root, we can use device files by passing the opposite mount option, "suid". Also we have to use syscall.Chmod instead of os.Chmod because the portability translation layer "syscallMode" messes up the sgid and suid bits. Fixes 70% of the failures in xfstests generic/193. The remaining are related to truncate, but we err on the safe side: $ diff -u tests/generic/193.out /home/jakob/src/fuse-xfstests/results//generic/193.out.bad [...] check that suid/sgid bits are cleared after successful truncate... with no exec perm before: -rwSr-Sr-- -after: -rw-r-Sr-- +after: -rw-r--r--
2016-06-26fuserfrontend: support truncate(2) by wrapping ftruncate(2)Jakob Unterwurzacher
Support truncate(2) by opening the file and calling ftruncate(2) While the glibc "truncate" wrapper seems to always use ftruncate, fsstress from xfstests uses this a lot by calling "truncate64" directly.
2016-06-15Rename internal "toggledlog" package to "tlog"Jakob Unterwurzacher
tlog is used heavily everywhere and deserves a shorter name. Renamed using sed magic, without any manual rework: find * -type f -exec sed -i 's/toggledlog/tlog/g' {} +
2016-06-14Fix warnings reported by Go 1.6 "go tool vet -shadow=true"Jakob Unterwurzacher
Warnings were: main.go:234: declaration of err shadows declaration at main.go:163: internal/fusefrontend/file.go:401: declaration of err shadows declaration at internal/fusefrontend/file.go:379: internal/fusefrontend/file.go:419: declaration of err shadows declaration at internal/fusefrontend/file.go:379: internal/fusefrontend/fs_dir.go:140: declaration of err shadows declaration at internal/fusefrontend/fs_dir.go:97:
2016-06-09fusefrontend: Utimens: convert ENOENT to EBADFJakob Unterwurzacher
If /proc/self/fd/X did not exist, the actual error is that the file descriptor was invalid. go-fuse's pathfs prefers using an open fd even for path-based operations but does not take any locks to prevent the fd from being closed. Instead, it retries the operation by path if it get EBADF. So this change allows the retry logic to work correctly. This fixes the error rsync: failed to set times on "/tmp/ping.Kgw.mnt/linux-3.0/[...]/.dvb_demux.c.N7YlEM": No such file or directory (2) that was triggered by pingpong-rsync.bash.
2016-05-30fusefrontend: replace unreliable "fd < 0" checkJakob Unterwurzacher
... with the "released" boolean. For some reason, the "f.fd.Fd() < 0" check did not work reliably, leading to nil pointer panics on the following wlock.lock(). The problem was discovered during fsstress testing and is unlikely to happen in normal operations. With this change, we passed 1700+ fsstress iterations.
2016-05-29fusefrontend: use sync.Once for one-time warningsJakob Unterwurzacher
Using a simple boolean was racy (which was harmless in this case) and non-idomatic.
2016-05-29fusefronted: check Fstat return value on file createJakob Unterwurzacher
The Fstat call should never fail, but still, if it does return an error it should be handled properly.
2016-05-29fusefrontend: remove unused "forgotten" variableJakob Unterwurzacher
The functionality has long been replaced by the fd < 0 check.
2016-05-08fusefrontend: fix panic due to concurrently unregistered wlockJakob Unterwurzacher
Commit 730291feab properly freed wlock when the file descriptor is closed. However, concurrently running Write and Truncates may still want to lock it. Check if the fd has been closed first.
2016-05-05fusefrontend: fix wlock memory leakJakob Unterwurzacher
The write lock was not freed on release, causing a slow memory leak. This was noticed by running extractloop.bash for 10 hours.
2016-04-10Fix "go tool vet -shadow=true" warningsJakob Unterwurzacher
Among those one real bug.
2016-02-06Run go fmtJakob Unterwurzacher
2016-02-06Move pathfs_frontend to internal/fusefrontendJakob Unterwurzacher
"git status" for reference: renamed: pathfs_frontend/args.go -> internal/fusefrontend/args.go renamed: pathfs_frontend/compat_darwin.go -> internal/fusefrontend/compat_darwin.go renamed: pathfs_frontend/compat_linux.go -> internal/fusefrontend/compat_linux.go renamed: pathfs_frontend/file.go -> internal/fusefrontend/file.go renamed: pathfs_frontend/file_holes.go -> internal/fusefrontend/file_holes.go renamed: pathfs_frontend/fs.go -> internal/fusefrontend/fs.go renamed: pathfs_frontend/fs_dir.go -> internal/fusefrontend/fs_dir.go renamed: pathfs_frontend/names.go -> internal/fusefrontend/names.go renamed: pathfs_frontend/write_lock.go -> internal/fusefrontend/write_lock.go modified: main.go
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