X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fuser-sessions.c;h=df46b76c872842597597e1661da4b7e29ec1a329;hp=4518d953ed7bebc80b3f110d2981ee3961391278;hb=ad293f5a94d8124ece7d1cb860952a87b1c8d98f;hpb=db019b8dd206844dcf5fde661256dc71fcc06fef

diff --git a/src/user-sessions.c b/src/user-sessions.c
index 4518d953e..df46b76c8 100644
--- a/src/user-sessions.c
+++ b/src/user-sessions.c
@@ -39,6 +39,8 @@ int main(int argc, char*argv[]) {
         log_parse_environment();
         log_open();
 
+        umask(0022);
+
         if (streq(argv[1], "start")) {
                 int q = 0, r = 0;
 
@@ -48,8 +50,16 @@ int main(int argc, char*argv[]) {
                 }
 
                 if (unlink("/etc/nologin") < 0 && errno != ENOENT) {
-                        log_error("Failed to remove /etc/nologin file: %m");
-                        q = -errno;
+
+                        /* If the file doesn't exist and /etc simply
+                         * was read-only (in which case unlink()
+                         * returns EROFS even if the file doesn't
+                         * exist), don't complain */
+
+                        if (errno != EROFS || access("/etc/nologin", F_OK) >= 0) {
+                                log_error("Failed to remove /etc/nologin file: %m");
+                                q = -errno;
+                        }
                 }
 
                 if (r < 0 || q < 0)
@@ -59,7 +69,7 @@ int main(int argc, char*argv[]) {
                 int r, q;
                 char *cgroup_user_tree = NULL;
 
-                if ((r = write_one_line_file("/run/nologin", "System is going down.")) < 0)
+                if ((r = write_one_line_file_atomic("/run/nologin", "System is going down.")) < 0)
                         log_error("Failed to create /run/nologin: %s", strerror(-r));
 
                 if ((q = cg_get_user_path(&cgroup_user_tree)) < 0) {