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Diffstat (limited to 'internal/syscallcompat/getdents_other.go')
-rw-r--r--internal/syscallcompat/getdents_other.go50
1 files changed, 41 insertions, 9 deletions
diff --git a/internal/syscallcompat/getdents_other.go b/internal/syscallcompat/getdents_other.go
index 4ef5b8f..6d08a9b 100644
--- a/internal/syscallcompat/getdents_other.go
+++ b/internal/syscallcompat/getdents_other.go
@@ -1,17 +1,49 @@
-// +build !linux
-
package syscallcompat
import (
- "log"
+ "os"
+ "syscall"
+
+ "golang.org/x/sys/unix"
"github.com/hanwen/go-fuse/fuse"
)
-// HaveGetdents is true if we have a working implementation of Getdents
-const HaveGetdents = false
-
-func Getdents(dir string) ([]fuse.DirEntry, error) {
- log.Panic("only implemented on Linux")
- return nil, nil
+// emulateGetdents reads all directory entries from the open directory "fd"
+// and returns them in a fuse.DirEntry slice.
+func emulateGetdents(fd int) (out []fuse.DirEntry, err error) {
+ // os.File closes the fd in its finalizer. Duplicate the fd to not affect
+ // the original fd.
+ newFd, err := syscall.Dup(fd)
+ if err != nil {
+ return nil, err
+ }
+ f := os.NewFile(uintptr(newFd), "")
+ defer f.Close()
+ // Get all file names in the directory
+ names, err := f.Readdirnames(0)
+ if err != nil {
+ return nil, err
+ }
+ // Stat all of them and convert to fuse.DirEntry
+ out = make([]fuse.DirEntry, 0, len(names))
+ for _, name := range names {
+ var st unix.Stat_t
+ err = Fstatat(fd, name, &st, unix.AT_SYMLINK_NOFOLLOW)
+ if err == syscall.ENOENT {
+ // File disappeared between readdir and stat. Pretend we did not
+ // see it.
+ continue
+ }
+ if err != nil {
+ return nil, err
+ }
+ newEntry := fuse.DirEntry{
+ Name: name,
+ Mode: uint32(st.Mode) & syscall.S_IFMT,
+ Ino: st.Ino,
+ }
+ out = append(out, newEntry)
+ }
+ return out, nil
}