Retry operations that have been shown to throw EINTR
errors on CIFS.
Todo: Solution for this pain in the back:
warning: unix.Getdents returned errno 2 in the middle of data
rm: cannot remove 'linux-3.0.old3/Documentation/ABI/removed': Input/output error
Progress towards fixing https://github.com/rfjakob/gocryptfs/issues/483 .
On CIFS mounts, unix.Getdents can return sudden ENOENT
in the middle of data. This will not be reported as an error
by user space tools, so return EIO instead.
Also log it as a warning.
https://github.com/rfjakob/gocryptfs/issues/483
We need
fd7328faf9
to fix a crash reported in https://github.com/rfjakob/gocryptfs/issues/430 :
2019/10/30 17:14:16 Unknown opcode 2016
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x508d38]
This patch is only in the v2.x.x branch. Upgrade to v2, as the
old API is also supported there.
Running
git grep hanwen/go-fuse | grep -v hanwen/go-fuse/v2
to check for forgotten references comes back clean.
Error was
+GOOS=darwin
+GOARCH=amd64
+go build -tags without_openssl
# github.com/rfjakob/gocryptfs/internal/syscallcompat
internal/syscallcompat/unix2syscall_darwin.go:22:32: u.Atimespec undefined (type unix.Stat_t has no field or method Atimespec)
internal/syscallcompat/unix2syscall_darwin.go:23:32: u.Mtimespec undefined (type unix.Stat_t has no field or method Mtimespec)
internal/syscallcompat/unix2syscall_darwin.go:24:32: u.Ctimespec undefined (type unix.Stat_t has no field or method Ctimespec)
caused by 87c872767d (diff-4913a9178621eadcdf191db17915fbcb)
When we run tests as root, they will leave root-owned files
in testParentDir, which causes trouble when we run tests as
a normal user later on. Split by UID.
For Linux, everything effectively stays the same. For both path-based and
fd-based Utimens() calls, we use unix.UtimesNanoAt(). To avoid introducing
a separate syscall wrapper for futimens() (as done in go-fuse, for example),
we instead use the /proc/self/fd - trick.
On macOS, this changes quite a lot:
* Path-based Utimens() calls were previously completely broken, since
unix.UtimensNanoAt() ignores the passed file descriptor. Note that this
cannot be fixed easily since there IS no appropriate syscall available on
macOS prior to High Sierra (10.13). We emulate this case by using
Fchdir() + setattrlist().
* Fd-based Utimens() calls were previously translated to f.GetAttr() (to
fill any empty parameters) and syscall.Futimes(), which does not does
support nanosecond precision. Both issues can be fixed by switching to
fsetattrlist().
Fixes https://github.com/rfjakob/gocryptfs/issues/350
This should get rid of
Openat: O_NOFOLLOW missing: flags = 0x0
Fchmodat: adding missing AT_SYMLINK_NOFOLLOW flag
sys_common_test.go:203: chmod on symlink should have failed, but did not. New mode=0333
UnmountErr: "[...]/057376762.mnt" was not found in MountInfo, cannot check for FD leak
and add some context to
--- FAIL: TestUtimesNano (0.00s)
matrix_test.go:628: no such file or directory
See https://github.com/rfjakob/gocryptfs/pull/343#issuecomment-453888006
for full test output
Instead of manually adjusting the user after creating the symlink,
adjust effective permissions and let the kernel deal with it.
Related to https://github.com/rfjakob/gocryptfs/issues/338.
Instead of manually adjusting the user and mode after creating the
device file, adjust effective permissions and let the kernel deal
with it.
Related to https://github.com/rfjakob/gocryptfs/issues/338.
Setting/removing extended attributes on directories was partially fixed with
commit eff35e60b6. However, on most file systems
it is also possible to do these operations without read access (see tests).
Since we cannot open a write-access fd to a directory, we have to use the
/proc/self/fd trick (already used for ListXAttr) for the other operations aswell.
For simplicity, let's separate the Linux and Darwin code again (basically revert
commit f320b76fd1), and always use the
/proc/self/fd trick on Linux. On Darwin we use the best-effort approach with
openBackingFile() as a fallback.
More discussion about the available options is available in
https://github.com/rfjakob/gocryptfs/issues/308.
Old XFS filesystems always return DT_UNKNOWN. Downgrade the message
to "info" level if we are on XFS.
Using the "warning" level means that users on old XFS filesystems
cannot run the test suite as it intentionally aborts on any
warnings.
Fixes https://github.com/rfjakob/gocryptfs/issues/267
The function used to do two things:
1) Walk the directory tree in a manner safe from symlink attacks
2) Open the final component in the mode requested by the caller
This change drops (2), which was only used once, and lets the caller
handle it. This simplifies the function and makes it fit for reuse in
forward mode in openBackingPath(), and for using O_PATH on Linux.
These were silently ignored until now (!) but
are rejected by Go 1.11 stdlib.
Drop the flags so the tests work again, until
we figure out a better solution.
https://github.com/golang/go/issues/20130
