1 files changed, 33 insertions, 0 deletions
diff --git a/internal/system/acl/acl.go b/internal/system/acl/acl.go
new file mode 100644
index 00000000..366ad533
--- /dev/null
+++ b/internal/system/acl/acl.go
@@ -0,0 +1,33 @@
+// Package acl implements simple ACL manipulation via libacl.
+package acl
+
+/*
+#cgo linux pkg-config: --static libacl
+
+#include "libacl-helper.h"
+*/
+import "C"
+
+type Perm C.acl_perm_t
+
+const (
+	Read    Perm = C.ACL_READ
+	Write   Perm = C.ACL_WRITE
+	Execute Perm = C.ACL_EXECUTE
+)
+
+// Update replaces ACL_USER entry with qualifier uid.
+func Update(name string, uid int, perms ...Perm) error {
+	var p *Perm
+	if len(perms) > 0 {
+		p = &perms[0]
+	}
+
+	r, err := C.hakurei_acl_update_file_by_uid(
+		C.CString(name),
+		C.uid_t(uid),
+		(*C.acl_perm_t)(p),
+		C.size_t(len(perms)),
+	)
+	return newAclPathError(name, int(r), err)
+}