os-util: add helpers for finding /etc/os-release

Place this new helpers in a new source file os-util.[ch], and move the
existing and related call path_is_os_tree() to it as well.

1 files changed, 0 insertions, 26 deletions

diff --git a/src/basic/stat-util.c b/src/basic/stat-util.c
index 61cc6f5738..1f0a75a0e8 100644
--- a/src/basic/stat-util.c
+++ b/src/basic/stat-util.c
@@ -132,32 +132,6 @@ int path_is_read_only_fs(const char *path) {
         return false;
 }
 
-int path_is_os_tree(const char *path) {
-        int r;
-
-        assert(path);
-
-        /* Does the path exist at all? If not, generate an error immediately. This is useful so that a missing root dir
-         * always results in -ENOENT, and we can properly distuingish the case where the whole root doesn't exist from
-         * the case where just the os-release file is missing. */
-        if (laccess(path, F_OK) < 0)
-                return -errno;
-
-        /* We use /usr/lib/os-release as flag file if something is an OS */
-        r = chase_symlinks("/usr/lib/os-release", path, CHASE_PREFIX_ROOT, NULL);
-        if (r == -ENOENT) {
-
-                /* Also check for the old location in /etc, just in case. */
-                r = chase_symlinks("/etc/os-release", path, CHASE_PREFIX_ROOT, NULL);
-                if (r == -ENOENT)
-                        return 0; /* We got nothing */
-        }
-        if (r < 0)
-                return r;
-
-        return 1;
-}
-
 int files_same(const char *filea, const char *fileb, int flags) {
         struct stat a, b;