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authorJakob Unterwurzacher2023-05-17 23:26:56 +0200
committerJakob Unterwurzacher2023-05-17 23:26:56 +0200
commit09954c4bdecf0ca6da65776f176dc934ffced2b0 (patch)
treead35e8f5edc62572c93c962b26a8f97f1eab0de5 /internal/fusefrontend
parent7d1e48d195b827ee00bfd0ab0421a395b1ec0ea7 (diff)
fusefrontend: implement our own Access()
Not having Access() means go-fuse emulates it by looking at Getattr(). This works fine most of the time, but breaks down on sshfs, where sshfs-benchmark.bash shows this: gocryptfs/tests$ ./sshfs-benchmark.bash nuetzlich.net working directory: /tmp/sshfs-benchmark.bash.JQC sshfs mounted: nuetzlich.net:/tmp -> sshfs.mnt gocryptfs mounted: sshfs.mnt/sshfs-benchmark.bash.Wrz/gocryptfs.crypt -> gocryptfs.mnt sshfs-benchmark.bash: sshfs gocryptfs-on-sshfs git init 3.98 6.80 rsync 7.71 10.84 rm -R 4.30rm: descend into write-protected directory 'gocryptfs.mnt/git1'? The go-fuse emulation gets it wrong here because sshfs reports permissions but does not enforce them. Implement it ourselves properly.
Diffstat (limited to 'internal/fusefrontend')
-rw-r--r--internal/fusefrontend/node.go11
1 files changed, 11 insertions, 0 deletions
diff --git a/internal/fusefrontend/node.go b/internal/fusefrontend/node.go
index 274123b..687a386 100644
--- a/internal/fusefrontend/node.go
+++ b/internal/fusefrontend/node.go
@@ -99,6 +99,17 @@ func (n *Node) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut)
return 0
}
+func (n *Node) Access(ctx context.Context, mode uint32) syscall.Errno {
+ dirfd, cName, errno := n.prepareAtSyscallMyself()
+ if errno != 0 {
+ return errno
+ }
+ defer syscall.Close(dirfd)
+
+ err := syscallcompat.Faccessat(dirfd, cName, mode)
+ return fs.ToErrno(err)
+}
+
// Unlink - FUSE call. Delete a file.
//
// Symlink-safe through use of Unlinkat().