2d386fc92e
We need to look at f_fstypename acc. to https://stackoverflow.com/a/52299141/1380267 : > As filesystem type numbers are now assigned at runtime in > recent versions of MacOS, you must use f_fstypename to > determine the type. https://github.com/rfjakob/gocryptfs/issues/585
42 lines
1010 B
Go
42 lines
1010 B
Go
package syscallcompat
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import (
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"golang.org/x/sys/unix"
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"github.com/rfjakob/gocryptfs/internal/tlog"
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)
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func DetectQuirks(cipherdir string) (q uint64) {
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const (
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// From https://github.com/rfjakob/gocryptfs/issues/585#issuecomment-887370065
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FstypenameExfat = "exfat"
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)
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var st unix.Statfs_t
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err := unix.Statfs(cipherdir, &st)
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if err != nil {
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tlog.Warn.Printf("DetectQuirks: Statfs on %q failed: %v", cipherdir, err)
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return 0
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}
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// Convert null-terminated st.Fstypename int8 array to string
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var buf []byte
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for _, v := range st.Fstypename {
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if v == 0 {
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break
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}
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buf = append(buf, byte(v))
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}
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fstypename := string(buf)
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tlog.Debug.Printf("DetectQuirks: Fstypename=%q\n", fstypename)
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// On MacOS ExFAT, all empty files share inode number 1:
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// https://github.com/rfjakob/gocryptfs/issues/585
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if fstypename == FstypenameExfat {
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logQuirk("ExFAT detected, disabling hard links. See https://github.com/rfjakob/gocryptfs/issues/585 for why.")
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q |= QuirkDuplicateIno1
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}
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return q
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}
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