xattr: add helper that detect special purpose xattrs

diff --git a/src/basic/xattr-util.c b/src/basic/xattr-util.c
index 1bde725d1a7f40160524d90731c589a55bed7f04..cf53418ceb195a0934b3f4eab9f2e749cb255d6f 100644 (file)
--- a/src/basic/xattr-util.c
+++ b/src/basic/xattr-util.c
@@ -477,3 +477,14 @@ int fd_setcrtime(int fd, usec_t usec) {
                               "user.crtime_usec", (const char*) &le, sizeof(le),
                               /* xattr_flags = */ 0);
 }
+
+bool xattr_is_acl(const char *name) {
+        return STR_IN_SET(
+                        ASSERT_PTR(name),
+                        "system.posix_acl_access",
+                        "system.posix_acl_default");
+}
+
+bool xattr_is_selinux(const char *name) {
+        return streq(ASSERT_PTR(name), "security.selinux");
+}

diff --git a/src/basic/xattr-util.h b/src/basic/xattr-util.h
index cf68933bfe394a1f7072d4d2abd9a3e13337d4df..f38ecf491dce5f180b79198db7883554429b7163 100644 (file)
--- a/src/basic/xattr-util.h
+++ b/src/basic/xattr-util.h
@@ -54,3 +54,6 @@ int getcrtime_at(int fd, const char *path, int at_flags, usec_t *ret);
 static inline int fd_getcrtime(int fd, usec_t *ret) {
         return getcrtime_at(fd, NULL, 0, ret);
 }
+
+bool xattr_is_acl(const char *name);
+bool xattr_is_selinux(const char *name);