util: add new uid_is_valid() call

[elogind.git] / src / libelogind / sd-login / sd-login.c

diff --git a/src/libelogind/sd-login/sd-login.c b/src/libelogind/sd-login/sd-login.c
index 7d6a4b78cfeaab2ade669b6080ecd92d0122583f..6300162ebe3703ace2304722f5658011f7636cb6 100644 (file)
--- a/src/libelogind/sd-login/sd-login.c
+++ b/src/libelogind/sd-login/sd-login.c
@@ -203,6 +203,7 @@ _public_ int sd_uid_get_state(uid_t uid, char**state) {
         char *s = NULL;
         int r;
 
+        assert_return(uid_is_valid(uid), -EINVAL);
         assert_return(state, -EINVAL);
 
         r = file_of_uid(uid, &p);
@@ -230,6 +231,7 @@ _public_ int sd_uid_get_display(uid_t uid, char **session) {
         _cleanup_free_ char *p = NULL, *s = NULL;
         int r;
 
+        assert_return(uid_is_valid(uid), -EINVAL);
         assert_return(session, -EINVAL);
 
         r = file_of_uid(uid, &p);
@@ -257,6 +259,7 @@ _public_ int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat)
         int r;
         const char *word, *variable, *state;
 
+        assert_return(uid_is_valid(uid), -EINVAL);
         assert_return(seat, -EINVAL);
 
         variable = require_active ? "ACTIVE_UID" : "UIDS";
@@ -289,6 +292,8 @@ static int uid_get_array(uid_t uid, const char *variable, char ***array) {
         char **a;
         int r;
 
+        assert_return(uid_is_valid(uid), -EINVAL);
+
         r = file_of_uid(uid, &p);
         if (r < 0)
                 return r;