X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fshutdown.c;h=4709746de40b616fde8b8fbcb17260b9b5d34c21;hp=c3a4c390be2e20bf4f89ec291439cd212ed5bdac;hb=7801356442578ff6e1c65844eb9e65c819af4660;hpb=f47fc35555565c4b161c2e44b357b4dbaf3a997d

diff --git a/src/core/shutdown.c b/src/core/shutdown.c
index c3a4c390b..4709746de 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 +131,27 @@ 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 (l == 5 && memcmp(w, "quiet", 5) == 0) {
+                                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();
@@ -197,31 +213,34 @@ int main(int argc, char *argv[]) {
                 if (need_umount) {
                         log_info("Unmounting file systems.");
                         r = umount_all(&changed);
-                        if (r == 0)
+                        if (r == 0) {
                                 need_umount = false;
-                        else if (r > 0)
+                                log_info("All filesystems unmounted.");
+                        } else if (r > 0)
                                 log_info("Not all file systems unmounted, %d left.", r);
                         else
                                 log_error("Failed to unmount file systems: %s", strerror(-r));
                 }
 
                 if (need_swapoff) {
-                        log_info("Disabling swaps.");
+                        log_info("Deactivating swaps.");
                         r = swapoff_all(&changed);
-                        if (r == 0)
+                        if (r == 0) {
                                 need_swapoff = false;
-                        else if (r > 0)
-                                log_info("Not all swaps are turned off, %d left.", r);
+                                log_info("All swaps deactivated.");
+                        } else if (r > 0)
+                                log_info("Not all swaps deactivated, %d left.", r);
                         else
-                                log_error("Failed to turn off swaps: %s", strerror(-r));
+                                log_error("Failed to deactivate swaps: %s", strerror(-r));
                 }
 
                 if (need_loop_detach) {
                         log_info("Detaching loop devices.");
                         r = loopback_detach_all(&changed);
-                        if (r == 0)
+                        if (r == 0) {
                                 need_loop_detach = false;
-                        else if (r > 0)
+                                log_info("All loop devices detached.");
+                        } else if (r > 0)
                                 log_info("Not all loop devices detached, %d left.", r);
                         else
                                 log_error("Failed to detach loop devices: %s", strerror(-r));
@@ -230,10 +249,11 @@ int main(int argc, char *argv[]) {
                 if (need_dm_detach) {
                         log_info("Detaching DM devices.");
                         r = dm_detach_all(&changed);
-                        if (r == 0)
+                        if (r == 0) {
                                 need_dm_detach = false;
-                        else if (r > 0)
-                                log_warning("Not all DM devices detached, %d left.", r);
+                                log_info("All DM devices detached.");
+                        } else if (r > 0)
+                                log_info("Not all DM devices detached, %d left.", r);
                         else
                                 log_error("Failed to detach DM devices: %s", strerror(-r));
                 }
@@ -257,50 +277,66 @@ int main(int argc, char *argv[]) {
 
         if (retries >= FINALIZE_ATTEMPTS)
                 log_error("Too many iterations, giving up.");
+        else
+                log_info("Storage is finalized.");
 
         arguments[0] = NULL;
         arguments[1] = argv[1];
         arguments[2] = NULL;
         execute_directory(SYSTEM_SHUTDOWN_PATH, NULL, arguments);
 
-        /* If we are in a container, just exit, this will kill our
-         * container for good. */
-        if (in_container) {
-                log_error("Exiting container.");
-                exit(0);
-        }
-
-        if (access("/run/initramfs/shutdown", X_OK) == 0) {
+        if (!in_container && !in_initrd() &&
+            access("/run/initramfs/shutdown", X_OK) == 0) {
 
                 if (prepare_new_root() >= 0 &&
                     pivot_to_new_root() >= 0) {
+
+                        log_info("Returning to initrd...");
+
                         execv("/shutdown", argv);
                         log_error("Failed to execute shutdown binary: %m");
                 }
         }
 
-        sync();
+        /* The kernel will automaticall flush ATA disks and suchlike
+         * on reboot(), but the file systems need to be synce'd
+         * explicitly in advance. So let's do this here, but not
+         * needlessly slow down containers. */
+        if (!in_container)
+                sync();
 
         if (cmd == LINUX_REBOOT_CMD_KEXEC) {
-                /* We cheat and exec kexec to avoid doing all its work */
-                pid_t pid = fork();
-
-                if (pid < 0)
-                        log_error("Could not fork: %m. Falling back to normal reboot.");
-                else if (pid > 0) {
-                        wait_for_terminate_and_warn("kexec", pid);
-                        log_warning("kexec failed. Falling back to normal reboot.");
-                } else {
-                        /* Child */
-                        const char *args[3] = { "/sbin/kexec", "-e", NULL };
-                        execv(args[0], (char * const *) args);
-                        return EXIT_FAILURE;
+
+                if (!in_container) {
+                        /* We cheat and exec kexec to avoid doing all its work */
+                        pid_t pid = fork();
+
+                        if (pid < 0)
+                                log_error("Could not fork: %m. Falling back to normal reboot.");
+                        else if (pid > 0) {
+                                wait_for_terminate_and_warn("kexec", pid);
+                                log_warning("kexec failed. Falling back to normal reboot.");
+                        } else {
+                                /* Child */
+                                const char *args[3] = { KEXEC, "-e", NULL };
+                                execv(args[0], (char * const *) args);
+                                return EXIT_FAILURE;
+                        }
                 }
 
                 cmd = RB_AUTOBOOT;
         }
 
         reboot(cmd);
+
+        if (errno == EPERM && in_container) {
+                /* If we are in a container, and we lacked
+                 * CAP_SYS_BOOT just exit, this will kill our
+                 * container for good. */
+                log_error("Exiting container.");
+                exit(0);
+        }
+
         log_error("Failed to invoke reboot(): %m");
         r = -errno;