suppress status message output at shutdown when 'quiet' is given

2 files changed, 17 insertions, 2 deletions

diff --git a/src/core/main.c b/src/core/main.c
index ada0f9d94b..243855fa15 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1942,9 +1942,9 @@ finish:
                         watchdog_close(true);
                 }
 
-		/* avoid the creation of new processes forked by the kernel; at this
+                /* avoid the creation of new processes forked by the kernel; at this
                  * point, we will not listen to the signals anyway */
-		cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
+                cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
 
                 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
                 free(env_block);
diff --git a/src/core/shutdown.c b/src/core/shutdown.c
index 2db761de36..c02a14d66e 100644
--- a/src/core/shutdown.c
+++ b/src/core/shutdown.c
@@ -39,6 +39,7 @@
 
 #include "missing.h"
 #include "log.h"
+#include "fileio.h"
 #include "umount.h"
 #include "util.h"
 #include "mkdir.h"
@@ -130,12 +131,26 @@ static int pivot_to_new_root(void) {
 }
 
 int main(int argc, char *argv[]) {
+        _cleanup_free_ char *line = NULL;
         int cmd, r;
         unsigned retries;
         bool need_umount = true, need_swapoff = true, need_loop_detach = true, need_dm_detach = true;
         bool in_container, use_watchdog = false;
         char *arguments[3];
 
+        /* suppress shutdown status output if 'quiet' is used  */
+        r = read_one_line_file("/proc/cmdline", &line);
+        if (r >= 0) {
+                char *w, *state;
+                size_t l;
+
+                FOREACH_WORD_QUOTED(w, l, line, state)
+                        if (streq(w, "quiet")) {
+                                log_set_max_level(LOG_WARNING);
+                                break;
+                        }
+        }
+
         log_parse_environment();
         log_set_target(LOG_TARGET_CONSOLE); /* syslog will die if not gone yet */
         log_open();