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authorJakob Unterwurzacher2018-09-08 18:06:33 +0200
committerJakob Unterwurzacher2018-09-08 18:06:33 +0200
commit930c37e03d5ff80e7cdc9f0ca2cd35d80a06d5c0 (patch)
tree7294ff75cc9ebbc78c5d6fe57c20ca7e69d515d5 /internal/syscallcompat
parent9ec9d0c49cfbdc9ceba10d7534b77e527c0a3cdc (diff)
syscallcompat: use O_PATH in OpenDirNofollow
This fixes the "0100 directory" problem in reverse mode, and should be slightly faster.
Diffstat (limited to 'internal/syscallcompat')
-rw-r--r--internal/syscallcompat/open_nofollow.go2
-rw-r--r--internal/syscallcompat/sys_darwin.go11
-rw-r--r--internal/syscallcompat/sys_linux.go13
3 files changed, 18 insertions, 8 deletions
diff --git a/internal/syscallcompat/open_nofollow.go b/internal/syscallcompat/open_nofollow.go
index d440fc3..3953a27 100644
--- a/internal/syscallcompat/open_nofollow.go
+++ b/internal/syscallcompat/open_nofollow.go
@@ -36,7 +36,7 @@ func OpenDirNofollow(baseDir string, relPath string) (fd int, err error) {
// Walk the directory tree
var dirfd2 int
for _, name := range parts {
- dirfd2, err = Openat(dirfd, name, syscall.O_RDONLY|syscall.O_NOFOLLOW|syscall.O_DIRECTORY, 0)
+ dirfd2, err = Openat(dirfd, name, syscall.O_RDONLY|syscall.O_NOFOLLOW|syscall.O_DIRECTORY|O_PATH, 0)
syscall.Close(dirfd)
if err != nil {
return -1, err
diff --git a/internal/syscallcompat/sys_darwin.go b/internal/syscallcompat/sys_darwin.go
index 74681db..993c229 100644
--- a/internal/syscallcompat/sys_darwin.go
+++ b/internal/syscallcompat/sys_darwin.go
@@ -9,9 +9,14 @@ import (
"github.com/hanwen/go-fuse/fuse"
)
-// O_DIRECT means oncached I/O on Linux. No direct equivalent on MacOS and defined
-// to zero there.
-const O_DIRECT = 0
+const (
+ // O_DIRECT means oncached I/O on Linux. No direct equivalent on MacOS and defined
+ // to zero there.
+ O_DIRECT = 0
+
+ // O_PATH is only defined on Linux
+ O_PATH = 0
+)
// Sorry, fallocate is not available on OSX at all and
// fcntl F_PREALLOCATE is not accessible from Go.
diff --git a/internal/syscallcompat/sys_linux.go b/internal/syscallcompat/sys_linux.go
index ed5c2a3..08483fd 100644
--- a/internal/syscallcompat/sys_linux.go
+++ b/internal/syscallcompat/sys_linux.go
@@ -12,11 +12,16 @@ import (
"github.com/rfjakob/gocryptfs/internal/tlog"
)
-const _FALLOC_FL_KEEP_SIZE = 0x01
+const (
+ _FALLOC_FL_KEEP_SIZE = 0x01
-// O_DIRECT means oncached I/O on Linux. No direct equivalent on MacOS and defined
-// to zero there.
-const O_DIRECT = syscall.O_DIRECT
+ // O_DIRECT means oncached I/O on Linux. No direct equivalent on MacOS and defined
+ // to zero there.
+ O_DIRECT = syscall.O_DIRECT
+
+ // O_PATH is only defined on Linux
+ O_PATH = unix.O_PATH
+)
var preallocWarn sync.Once