diff options
| -rw-r--r-- | internal/fusefrontend/node.go | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/internal/fusefrontend/node.go b/internal/fusefrontend/node.go index 91c947e..95be48d 100644 --- a/internal/fusefrontend/node.go +++ b/internal/fusefrontend/node.go @@ -75,26 +75,50 @@ func (n *Node) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) return fga.Getattr(ctx, out) } } + rn := n.rootNode() + var st *syscall.Stat_t + var err error dirfd, cName, errno := n.prepareAtSyscallMyself() + // Hack for deleted fifos. As OPEN on a fifo does not reach + // the filesystem, we have no fd to access it. To make "cat" and git's + // t9300-fast-import.sh happy, we fake it as best as we can. + // https://github.com/rfjakob/gocryptfs/issues/929 + if errno == syscall.ENOENT && n.StableAttr().Mode == syscall.S_IFIFO { + out.Mode = syscall.S_IFIFO + out.Ino = n.StableAttr().Ino + // cat looks at this to determine the optimal io size. Seems to be always 4096 for fifos. + out.Blksize = 4096 + // We don't know what the owner was. Set it to nobody which seems safer + // than leaving it at 0 (root). + out.Owner.Gid = 65534 + out.Owner.Uid = 65534 + // All the other fields stay 0. This is what cat sees (strace -v log): + // + // fstat(1, {st_dev=makedev(0, 0x4d), st_ino=3838227, st_mode=S_IFIFO|000, st_nlink=0, + // st_uid=65534, st_gid=65534, st_blksize=4096, st_blocks=0, st_size=0, st_atime=0, + // st_atime_nsec=0, st_mtime=0, st_mtime_nsec=0, st_ctime=0, st_ctime_nsec=0}) = 0 + goto out + } if errno != 0 { return } + defer syscall.Close(dirfd) - st, err := syscallcompat.Fstatat2(dirfd, cName, unix.AT_SYMLINK_NOFOLLOW) + st, err = syscallcompat.Fstatat2(dirfd, cName, unix.AT_SYMLINK_NOFOLLOW) if err != nil { return fs.ToErrno(err) } // Fix inode number - rn := n.rootNode() rn.inoMap.TranslateStat(st) out.Attr.FromStat(st) // Translate ciphertext size in `out.Attr.Size` to plaintext size n.translateSize(dirfd, cName, &out.Attr) +out: if rn.args.ForceOwner != nil { out.Owner = *rn.args.ForceOwner } |