70bcf58a9b
Now that we have Fstatat we can use it in Getdents to get rid of the path name. Also, add an emulated version of getdents for MacOS. This allows to drop the !HaveGetdents special cases from fusefrontend. Modify the getdents test to test both native getdents and the emulated version.
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package syscallcompat
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import (
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"os"
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"syscall"
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"golang.org/x/sys/unix"
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"github.com/hanwen/go-fuse/fuse"
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)
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// emulateGetdents reads all directory entries from the open directory "fd"
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// and returns them in a fuse.DirEntry slice.
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func emulateGetdents(fd int) (out []fuse.DirEntry, err error) {
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// os.File closes the fd in its finalizer. Duplicate the fd to not affect
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// the original fd.
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newFd, err := syscall.Dup(fd)
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if err != nil {
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return nil, err
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}
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f := os.NewFile(uintptr(newFd), "")
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defer f.Close()
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// Get all file names in the directory
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names, err := f.Readdirnames(0)
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if err != nil {
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return nil, err
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}
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// Stat all of them and convert to fuse.DirEntry
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out = make([]fuse.DirEntry, 0, len(names))
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for _, name := range names {
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var st unix.Stat_t
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err = Fstatat(fd, name, &st, unix.AT_SYMLINK_NOFOLLOW)
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if err == syscall.ENOENT {
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// File disappeared between readdir and stat. Pretend we did not
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// see it.
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continue
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}
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if err != nil {
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return nil, err
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}
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newEntry := fuse.DirEntry{
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Name: name,
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Mode: uint32(st.Mode) & syscall.S_IFMT,
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Ino: st.Ino,
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}
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out = append(out, newEntry)
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}
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return out, nil
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}
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