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authorJakob Unterwurzacher2016-07-03 20:21:29 +0200
committerJakob Unterwurzacher2016-07-03 20:22:22 +0200
commit741bf0726e71c931af1dc1278571c280fc27970f (patch)
tree37b500e022c4f1ce90fa1fef486a3b8640d0c6b4
parentd8524c73696392c7e895e6b3fe4c7e120d7296f7 (diff)
syscallcompat: OSX: add Mknodat wrapper
Protip: find naked *at syscalls using: git grep "syscall." | grep "at(" | grep -v syscallcompat
-rw-r--r--internal/fusefrontend/fs.go2
-rw-r--r--internal/syscallcompat/sys_darwin.go18
-rw-r--r--internal/syscallcompat/sys_linux.go4
3 files changed, 23 insertions, 1 deletions
diff --git a/internal/fusefrontend/fs.go b/internal/fusefrontend/fs.go
index 279c755..de168dc 100644
--- a/internal/fusefrontend/fs.go
+++ b/internal/fusefrontend/fs.go
@@ -205,7 +205,7 @@ func (fs *FS) Mknod(path string, mode uint32, dev uint32, context *fuse.Context)
}
// Create device node
- err = syscall.Mknodat(int(dirfd.Fd()), cName, uint32(mode), int(dev))
+ err = syscallcompat.Mknodat(int(dirfd.Fd()), cName, uint32(mode), int(dev))
if err != nil {
nametransform.DeleteLongName(dirfd, cName)
}
diff --git a/internal/syscallcompat/sys_darwin.go b/internal/syscallcompat/sys_darwin.go
index 6300317..852eee4 100644
--- a/internal/syscallcompat/sys_darwin.go
+++ b/internal/syscallcompat/sys_darwin.go
@@ -87,6 +87,24 @@ func Unlinkat(dirfd int, path string) (err error) {
return syscall.Unlink(path)
}
+// Poor man's Mknodat
+func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
+ chdirMutex.Lock()
+ defer chdirMutex.Unlock()
+ if !filepath.IsAbs(path) {
+ oldWd, err := os.Getwd()
+ if err != nil {
+ return err
+ }
+ defer os.Chdir(oldWd)
+ }
+ path, err = dirfdAbs(dirfd, path)
+ if err != nil {
+ return err
+ }
+ return syscall.Mknod(path, mode, dev)
+}
+
// dirfdAbs transforms the dirfd-relative "path" to an absolute one. If the
// path is not already absolute, this function will change the working
// directory. The caller has to chdir back.
diff --git a/internal/syscallcompat/sys_linux.go b/internal/syscallcompat/sys_linux.go
index ded5d17..81cdb15 100644
--- a/internal/syscallcompat/sys_linux.go
+++ b/internal/syscallcompat/sys_linux.go
@@ -52,3 +52,7 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
func Unlinkat(dirfd int, path string) error {
return syscall.Unlinkat(dirfd, path)
}
+
+func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
+ return syscall.Mknodat(dirfd, path, mode, dev)
+}