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cmount: introduce symlink support #2975

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Filipe Azevedo 2022-12-14 22:14:20 +01:00 committed by Nick Craig-Wood
parent 2d47689b6d
commit b782136538
1 changed files with 22 additions and 11 deletions
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33
cmd/cmount/fs.go
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@ -141,15 +141,9 @@ func (fsys *FS) stat(node vfs.Node, stat *fuse.Stat_t) (errc int) {
Size := uint64(node.Size())
Blocks := (Size + 511) / 512
modTime := node.ModTime()
Mode := node.Mode().Perm()
if node.IsDir() {
Mode |= fuse.S_IFDIR
} else {
Mode |= fuse.S_IFREG
}
//stat.Dev = 1
stat.Ino = node.Inode() // FIXME do we need to set the inode number?
stat.Mode = uint32(Mode)
stat.Mode = getMode(node)
stat.Nlink = 1
stat.Uid = fsys.VFS.Opt.UID
stat.Gid = fsys.VFS.Opt.GID
@ -496,14 +490,15 @@ func (fsys *FS) Link(oldpath string, newpath string) (errc int) {
// Symlink creates a symbolic link.
func (fsys *FS) Symlink(target string, newpath string) (errc int) {
defer log.Trace(target, "newpath=%q", newpath)("errc=%d", &errc)
return -fuse.ENOSYS
defer log.Trace(target, "newpath=%q, target=%q", newpath, target)("errc=%d", &errc)
return translateError(fsys.VFS.Symlink(target, newpath))
}
// Readlink reads the target of a symbolic link.
func (fsys *FS) Readlink(path string) (errc int, linkPath string) {
defer log.Trace(path, "")("linkPath=%q, errc=%d", &linkPath, &errc)
return -fuse.ENOSYS, ""
defer log.Trace(path, "")("errc=%v, linkPath=%q", &errc, linkPath)
linkPath, err := fsys.VFS.Readlink(path)
return translateError(err), linkPath
}
// Chmod changes the permission bits of a file.
@ -635,6 +630,22 @@ func translateOpenFlags(inFlags int) (outFlags int) {
return outFlags
}
// get the Mode from a vfs Node
func getMode(node os.FileInfo) uint32 {
vfsMode := node.Mode()
Mode := vfsMode.Perm()
if vfsMode&os.ModeDir != 0 {
Mode |= fuse.S_IFDIR
} else if vfsMode&os.ModeSymlink != 0 {
Mode |= fuse.S_IFLNK
} else if vfsMode&os.ModeNamedPipe != 0 {
Mode |= fuse.S_IFIFO
} else {
Mode |= fuse.S_IFREG
}
return uint32(Mode)
}
// Make sure interfaces are satisfied
var (
_ fuse.FileSystemInterface = (*FS)(nil)