syscallcompat: OSX: add Mknodat wrapper

Protip: find naked *at syscalls using:

   git grep "syscall." | grep "at(" | grep -v syscallcompat
libgocryptfs
Jakob Unterwurzacher 7 years ago
parent d8524c7369
commit 741bf0726e
  1. 2
      internal/fusefrontend/fs.go
  2. 18
      internal/syscallcompat/sys_darwin.go
  3. 4
      internal/syscallcompat/sys_linux.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)
}

@ -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.

@ -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)
}

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