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Diffstat (limited to 'internal/fusefrontend/xattr_darwin.go')
-rw-r--r--internal/fusefrontend/xattr_darwin.go78
1 files changed, 78 insertions, 0 deletions
diff --git a/internal/fusefrontend/xattr_darwin.go b/internal/fusefrontend/xattr_darwin.go
index 8760480..741eb6c 100644
--- a/internal/fusefrontend/xattr_darwin.go
+++ b/internal/fusefrontend/xattr_darwin.go
@@ -3,6 +3,16 @@
// Package fusefrontend interfaces directly with the go-fuse library.
package fusefrontend
+import (
+ "syscall"
+
+ "golang.org/x/sys/unix"
+
+ "github.com/hanwen/go-fuse/fuse"
+
+ "github.com/rfjakob/gocryptfs/internal/syscallcompat"
+)
+
func disallowedXAttrName(attr string) bool {
return false
}
@@ -14,3 +24,71 @@ func filterXattrSetFlags(flags int) int {
return flags &^ XATTR_NOSECURITY
}
+
+func (fs *FS) getXAttr(relPath string, cAttr string, context *fuse.Context) ([]byte, fuse.Status) {
+ // O_NONBLOCK to not block on FIFOs.
+ fd, err := fs.openBackingFile(relPath, syscall.O_RDONLY|syscall.O_NONBLOCK)
+ if err != nil {
+ return nil, fuse.ToStatus(err)
+ }
+ defer syscall.Close(fd)
+
+ cData, err := syscallcompat.Fgetxattr(fd, cAttr)
+ if err != nil {
+ return nil, fuse.ToStatus(err)
+ }
+
+ return cData, fuse.OK
+}
+
+func (fs *FS) setXAttr(relPath string, cAttr string, cData []byte, flags int, context *fuse.Context) fuse.Status {
+ // O_NONBLOCK to not block on FIFOs.
+ fd, err := fs.openBackingFile(relPath, syscall.O_WRONLY|syscall.O_NONBLOCK)
+ // Directories cannot be opened read-write. Retry.
+ if err == syscall.EISDIR {
+ fd, err = fs.openBackingFile(relPath, syscall.O_RDONLY|syscall.O_DIRECTORY|syscall.O_NONBLOCK)
+ }
+ if err != nil {
+ return fuse.ToStatus(err)
+ }
+ defer syscall.Close(fd)
+
+ err = unix.Fsetxattr(fd, cAttr, cData, flags)
+ return fuse.ToStatus(err)
+}
+
+func (fs *FS) removeXAttr(relPath string, cAttr string, context *fuse.Context) fuse.Status {
+ // O_NONBLOCK to not block on FIFOs.
+ fd, err := fs.openBackingFile(relPath, syscall.O_WRONLY|syscall.O_NONBLOCK)
+ // Directories cannot be opened read-write. Retry.
+ if err == syscall.EISDIR {
+ fd, err = fs.openBackingFile(relPath, syscall.O_RDONLY|syscall.O_DIRECTORY|syscall.O_NONBLOCK)
+ }
+ if err != nil {
+ return fuse.ToStatus(err)
+ }
+ defer syscall.Close(fd)
+
+ err = unix.Fremovexattr(fd, cAttr)
+ return fuse.ToStatus(err)
+}
+
+func (fs *FS) listXAttr(relPath string, context *fuse.Context) ([]string, fuse.Status) {
+ // O_NONBLOCK to not block on FIFOs.
+ fd, err := fs.openBackingFile(relPath, syscall.O_RDONLY|syscall.O_NONBLOCK)
+ // On a symlink, openBackingFile fails with ELOOP. Let's pretend there
+ // can be no xattrs on symlinks, and always return an empty result.
+ if err == syscall.ELOOP {
+ return nil, fuse.OK
+ }
+ if err != nil {
+ return nil, fuse.ToStatus(err)
+ }
+ defer syscall.Close(fd)
+
+ cNames, err := syscallcompat.Flistxattr(fd)
+ if err != nil {
+ return nil, fuse.ToStatus(err)
+ }
+ return cNames, fuse.OK
+}