}
}
+char* path_join(const char *root, const char *path, const char *rest) {
+ assert(path);
+
+ if (!isempty(root))
+ return strjoin(root, "/",
+ path[0] == '/' ? path+1 : path,
+ rest ? "/" : NULL,
+ rest && rest[0] == '/' ? rest+1 : rest,
+ NULL);
+ else
+ return strjoin(path,
+ rest ? "/" : NULL,
+ rest && rest[0] == '/' ? rest+1 : rest,
+ NULL);
+}
+
int path_is_mount_point(const char *t, bool allow_symlink) {
union file_handle_union h = {
};
int mount_id, mount_id_parent;
- char *parent;
+ _cleanup_free_ char *parent = NULL;
struct stat a, b;
int r;
h.handle.handle_bytes = MAX_HANDLE_SZ;
r = name_to_handle_at(AT_FDCWD, parent, &h.handle, &mount_id_parent, 0);
- free(parent);
if (r < 0) {
/* The parent can't do name_to_handle_at() but the
* directory we are interested in can? If so, it must
return r;
r = lstat(parent, &b);
- free(parent);
if (r < 0)
return -errno;
int find_binary(const char *name, char **filename) {
assert(name);
- if (strchr(name, '/')) {
+ if (is_path(name)) {
if (access(name, X_OK) < 0)
return -errno;
}
int fsck_exists(const char *fstype) {
+ _cleanup_free_ char *p = NULL, *d = NULL;
const char *checker;
+ int r;
checker = strappenda("fsck.", fstype);
- return find_binary(checker, NULL);
+
+ r = find_binary(checker, &p);
+ if (r < 0)
+ return r;
+
+ /* An fsck that is linked to /bin/true is a non-existent
+ * fsck */
+
+ r = readlink_malloc(p, &d);
+ if (r >= 0 &&
+ (path_equal(d, "/bin/true") ||
+ path_equal(d, "/usr/bin/true") ||
+ path_equal(d, "/dev/null")))
+ return -ENOENT;
+
+ return 0;
}