fixed join/shutdown problem, moving browsers and mail clients to a --shell=none default in profile files

1 files changed, 2 insertions, 7 deletions

diff --git a/src/firejail/shutdown.c b/src/firejail/shutdown.c
index f37869bd0..649f86800 100644
--- a/src/firejail/shutdown.c
+++ b/src/firejail/shutdown.c
@@ -60,13 +60,8 @@ void shut(pid_t pid) {
         // check privileges for non-root users
         uid_t uid = getuid();
         if (uid != 0) {
-                struct stat s;
-                char *dir;
-                if (asprintf(&dir, "/proc/%u/ns", pid) == -1)
-                        errExit("asprintf");
-                if (stat(dir, &s) < 0)
-                        errExit("stat");
-                if (s.st_uid != uid) {
+                uid_t sandbox_uid = pid_get_uid(pid);
+                if (uid != sandbox_uid) {
                         fprintf(stderr, "Error: permission is denied to shutdown a sandbox created by a different user.\n");
                         exit(1);
                 }