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authorJakob Unterwurzacher2021-08-11 20:21:32 +0200
committerJakob Unterwurzacher2021-08-11 20:23:35 +0200
commit2d386fc92e88be5384d1654db5d6e23ef4682354 (patch)
tree32ad6c71cad91bc64f162d81ce7e64903b6e6b4f /internal/fusefrontend
parent0c16616117e9866cc49adc85738e3c9e3adf413a (diff)
syscallcompat: move quirks logic here & fix darwin
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
Diffstat (limited to 'internal/fusefrontend')
-rw-r--r--internal/fusefrontend/file.go2
-rw-r--r--internal/fusefrontend/node_helpers.go2
-rw-r--r--internal/fusefrontend/quirks.go52
-rw-r--r--internal/fusefrontend/root_node.go2
4 files changed, 3 insertions, 55 deletions
diff --git a/internal/fusefrontend/file.go b/internal/fusefrontend/file.go
index 304ba7f..716a0db 100644
--- a/internal/fusefrontend/file.go
+++ b/internal/fusefrontend/file.go
@@ -118,7 +118,7 @@ func (f *File) createHeader() (fileID []byte, err error) {
h := contentenc.RandomHeader()
buf := h.Pack()
// Prevent partially written (=corrupt) header by preallocating the space beforehand
- if !f.rootNode.args.NoPrealloc && f.rootNode.quirks&quirkBrokenFalloc == 0 {
+ if !f.rootNode.args.NoPrealloc && f.rootNode.quirks&syscallcompat.QuirkBrokenFalloc == 0 {
err = syscallcompat.EnospcPrealloc(f.intFd(), 0, contentenc.HeaderLen)
if err != nil {
if !syscallcompat.IsENOSPC(err) {
diff --git a/internal/fusefrontend/node_helpers.go b/internal/fusefrontend/node_helpers.go
index 2f361f6..8d1749d 100644
--- a/internal/fusefrontend/node_helpers.go
+++ b/internal/fusefrontend/node_helpers.go
@@ -87,7 +87,7 @@ func (n *Node) newChild(ctx context.Context, st *syscall.Stat_t, out *fuse.Entry
out.Attr.FromStat(st)
var gen uint64 = 1
- if rn.args.SharedStorage || rn.quirks&quirkDuplicateIno1 != 0 {
+ if rn.args.SharedStorage || rn.quirks&syscallcompat.QuirkDuplicateIno1 != 0 {
// Make each directory entry a unique node by using a unique generation
// value - see the comment at RootNode.gen for details.
gen = atomic.AddUint64(&rn.gen, 1)
diff --git a/internal/fusefrontend/quirks.go b/internal/fusefrontend/quirks.go
deleted file mode 100644
index 2979c84..0000000
--- a/internal/fusefrontend/quirks.go
+++ /dev/null
@@ -1,52 +0,0 @@
-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
-}
diff --git a/internal/fusefrontend/root_node.go b/internal/fusefrontend/root_node.go
index 9905d66..a2de953 100644
--- a/internal/fusefrontend/root_node.go
+++ b/internal/fusefrontend/root_node.go
@@ -79,7 +79,7 @@ func NewRootNode(args Args, c *contentenc.ContentEnc, n *nametransform.NameTrans
contentEnc: c,
inoMap: inomap.New(),
dirCache: dirCache{ivLen: ivLen},
- quirks: detectQuirks(args.Cipherdir),
+ quirks: syscallcompat.DetectQuirks(args.Cipherdir),
}
return rn
}