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path: root/internal/fusefrontend/fs_dir.go
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2017-11-25fusefrontend: Skip gocryptfs.diriv handling when directory was deleted ↵Sebastian Lackner
successfully Fixes https://github.com/rfjakob/gocryptfs/issues/171 Steps to reproduce: * Create a regular forward mount point * Create a new directory in the mount point * Manually delete the gocryptfs.diriv file from the corresponding ciphertext directory * Attempt to delete the directory with 'rmdir <dirname>' Although the code explicitly checks for empty directories, it will still attempt to move the non-existent gocryptfs.diriv file and fails with: rmdir: failed to remove '<dirname>': No such file or directory
2017-09-05macos: automatically remove .DS_Store on RmdirJakob Unterwurzacher
MacOS sprinkles .DS_Store files everywhere. This is hard to avoid for users, so handle it transparently in Rmdir(). Mitigates https://github.com/rfjakob/gocryptfs/issues/140
2017-09-05fusefrontend: reorder logic in Rmdir to get rid of one indentation levelJakob Unterwurzacher
Handle the errors first so that the normal code path is not indented. This should not cause any behavoir changes.
2017-09-05macos: don't throw IO errors because of .DS_Store filesJakob Unterwurzacher
MacOS creates lots of these files, and if the directory is otherwise empty, we would throw an IO error to the unsuspecting user. With this patch, we log a warning, but otherwise pretend we did not see it. Mitigates https://github.com/rfjakob/gocryptfs/issues/140
2017-09-03syscallcompat: Getdents: warn once if we get DT_UNKNOWNJakob Unterwurzacher
...and if Getdents is not available at all. Due to this warning I now know that SSHFS always returns DT_UNKNOWN: gocryptfs[8129]: Getdents: convertDType: received DT_UNKNOWN, falling back to Lstat This behavoir is confirmed at http://ahefner.livejournal.com/16875.html: "With sshfs, I finally found that obscure case. The dtype is always set to DT_UNKNOWN [...]"
2017-09-03fusefrontend: use DirIVCache in OpenDir()Jakob Unterwurzacher
Previously, OpenDir() did not use the cache at all, missing an opportunity to speed up repeated directory reads.
2017-08-15fusefrontend: use Getdents if availableJakob Unterwurzacher
Getdents avoids calling Lstat on each file.
2017-05-23nametransform: harden name decryption against invalid inputJakob Unterwurzacher
This fixes a few issues I have found reviewing the code: 1) Limit the amount of data ReadLongName() will read. Previously, you could send gocryptfs into out-of-memory by symlinking gocryptfs.diriv to /dev/zero. 2) Handle the empty input case in unPad16() by returning an error. Previously, it would panic with an out-of-bounds array read. It is unclear to me if this could actually be triggered. 3) Reject empty names after base64-decoding in DecryptName(). An empty name crashes emeCipher.Decrypt(). It is unclear to me if B64.DecodeString() can actually return a non-error empty result, but let's guard against it anyway.
2017-05-07nametranform, fusefrontend: better errors on invalid namesJakob Unterwurzacher
nametransform.DecryptName() now always returns syscall.EBADMSG if the name was invalid. fusefrontend.OpenDir error messages have been normalized.
2016-11-28fusefrontend: use Lchown when preserving ownerJakob Unterwurzacher
This prevents (unlikely) symlink race attacks
2016-10-16fusefrontend: log missing gocryptfs.dirivJakob Unterwurzacher
This can happen during normal operation when the directory has been deleted concurrently. But it can also mean that the gocryptfs.diriv is missing due to an error, so log the event at "info" level.
2016-10-10fusefrontend: Also preserve the owner in MkdirJakob Unterwurzacher
This already worked for files but was missing for dirs.
2016-10-04lint fixesValient Gough
2016-07-03syscallcompat: OSX: add Unlinkat wrapperJakob Unterwurzacher
Also, replace remaining naked syscall.Openat calls.
2016-07-03syscallcompat: OSX: add Renamat wrapperJakob Unterwurzacher
Adds a poor man's renameat implementation for OSX.
2016-07-03nametransform: hide detailed padding error behind the debug flagJakob Unterwurzacher
unPad16 returns detailed errors including the position of the incorrect bytes. Kill a possible padding oracle by lumping everything into a generic error. The detailed error is only logged if debug is active.
2016-06-27fusefrontend: fix PlaintextNames versions of Mkdir, RmdirJakob Unterwurzacher
The "!fs.args.DirIV" special case was removed by b17f0465c7 but that, by accident, also removed the handling for PlaintextNames. Re-add it as an explicit PlaintextNames special case. Also adds support for removing directories that miss their gocryptfs.diriv file for some reason.
2016-06-23Drop deprecated "-diriv" optionJakob Unterwurzacher
The DirIV feature flag is already mandatory, dropping the command line option is the final step.
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.
2016-06-04fusefrontend: report an error if all files in a directory were invalidJakob Unterwurzacher
Just presenting an empty directory means that the user does not know that things went wrong unless he checks the syslog or tries to delete the directory. It would be nice to report the error even if only some files were invalid. However, go-fuse does not allow returning the valid directory entries AND an error.
2016-04-10Fix "go tool vet -shadow=true" warningsJakob Unterwurzacher
Among those one real bug.
2016-04-10longnames: fix fsstress failure, use dirfdJakob Unterwurzacher
Using dirfd-relative operations allows safe lockless handling of the ".name" files.
2016-04-10longnames: use symbolic constants instead of naked intsJakob Unterwurzacher
2016-02-07longnames part II: Rename, Unlink, Rmdir, Mknod, Mkdir + testsv0.9-rc1Jakob Unterwurzacher
2016-02-07Move OpenDir to fs_dir.goJakob Unterwurzacher
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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