c3c9513e65
This also moves the quirks logic into fusefrontend. Fixes https://github.com/rfjakob/gocryptfs/issues/585
53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
package fusefrontend
|
|
|
|
import (
|
|
"runtime"
|
|
|
|
"golang.org/x/sys/unix"
|
|
|
|
"github.com/rfjakob/gocryptfs/internal/tlog"
|
|
)
|
|
|
|
const (
|
|
quirkBrokenFalloc = uint64(1 << iota)
|
|
quirkDuplicateIno1
|
|
)
|
|
|
|
func detectQuirks(cipherdir string) (q uint64) {
|
|
const (
|
|
// From Linux' man statfs
|
|
BTRFS_SUPER_MAGIC = 0x9123683e
|
|
|
|
// From https://github.com/rfjakob/gocryptfs/issues/585#issuecomment-887370065
|
|
DARWIN_EXFAT_MAGIC = 35
|
|
)
|
|
|
|
var st unix.Statfs_t
|
|
err := unix.Statfs(cipherdir, &st)
|
|
if err != nil {
|
|
tlog.Warn.Printf("detectQuirks: Statfs on %q failed: %v", cipherdir, err)
|
|
return 0
|
|
}
|
|
|
|
logQuirk := func(s string) {
|
|
tlog.Info.Printf(tlog.ColorYellow + "detectQuirks: " + s + tlog.ColorReset)
|
|
}
|
|
|
|
// Preallocation on Btrfs is broken ( https://github.com/rfjakob/gocryptfs/issues/395 )
|
|
// and slow ( https://github.com/rfjakob/gocryptfs/issues/63 ).
|
|
//
|
|
// Cast to uint32 avoids compile error on arm: "constant 2435016766 overflows int32"
|
|
if uint32(st.Type) == BTRFS_SUPER_MAGIC {
|
|
logQuirk("Btrfs detected, forcing -noprealloc. See https://github.com/rfjakob/gocryptfs/issues/395 for why.")
|
|
q |= quirkBrokenFalloc
|
|
}
|
|
// On MacOS ExFAT, all empty files share inode number 1:
|
|
// https://github.com/rfjakob/gocryptfs/issues/585
|
|
if runtime.GOOS == "darwin" && st.Type == DARWIN_EXFAT_MAGIC {
|
|
logQuirk("ExFAT detected, disabling hard links. See https://github.com/rfjakob/gocryptfs/issues/585 for why.")
|
|
q |= quirkDuplicateIno1
|
|
}
|
|
|
|
return q
|
|
}
|