diff options
Diffstat (limited to 'internal/syscallcompat/getdents_linux.go')
| -rw-r--r-- | internal/syscallcompat/getdents_linux.go | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/internal/syscallcompat/getdents_linux.go b/internal/syscallcompat/getdents_linux.go index 1387023..3853f2d 100644 --- a/internal/syscallcompat/getdents_linux.go +++ b/internal/syscallcompat/getdents_linux.go @@ -123,6 +123,21 @@ func getdentsName(s unix.Dirent) (string, error) { var dtUnknownWarnOnce sync.Once +func dtUnknownWarn(dirfd int) { + const XFS_SUPER_MAGIC = 0x58465342 // From man 2 statfs + var buf syscall.Statfs_t + err := syscall.Fstatfs(dirfd, &buf) + if err == nil && buf.Type == XFS_SUPER_MAGIC { + // Old XFS filesystems always return DT_UNKNOWN. Downgrade the message + // to "info" level if we are on XFS. + // https://github.com/rfjakob/gocryptfs/issues/267 + tlog.Info.Printf("Getdents: convertDType: received DT_UNKNOWN, fstype=xfs, falling back to stat") + } else { + tlog.Warn.Printf("Getdents: convertDType: received DT_UNKNOWN, fstype=%#x, falling back to stat", + buf.Type) + } +} + // convertDType converts a Dirent.Type to at Stat_t.Mode value. func convertDType(dirfd int, name string, dtype uint8) (uint32, error) { if dtype != syscall.DT_UNKNOWN { @@ -130,9 +145,7 @@ func convertDType(dirfd int, name string, dtype uint8) (uint32, error) { return uint32(dtype) << 12, nil } // DT_UNKNOWN: we have to call stat() - dtUnknownWarnOnce.Do(func() { - tlog.Warn.Printf("Getdents: convertDType: received DT_UNKNOWN, falling back to stat") - }) + dtUnknownWarnOnce.Do(func() { dtUnknownWarn(dirfd) }) var st unix.Stat_t err := Fstatat(dirfd, name, &st, unix.AT_SYMLINK_NOFOLLOW) if err != nil { |