Changeset 23464

Timestamp:

12/12/07 13:12:28 (12 months ago)

Author:

zarzycki@…

Message:

Let's do some more stuff in user-land so that we can benchmark it.

Files:

• trunk/launchd/src/launchd_core_logic.c (modified) (3 diffs)

trunk/launchd/src/launchd_core_logic.c

@@ -454 +454 @@
 static void do_first_per_user_launchd_hack(void);
 static void do_file_init(void) __attribute__((constructor));
+static void do_unmounts(void);
 
 /* file local globals */
@@ -755 +756 @@
                 jobmgr_log(jm, LOG_DEBUG, "About to call: sync()");
                 sync(); /* We're are going to rely on log timestamps to benchmark this call */
+                jobmgr_log(jm, LOG_DEBUG, "Unmounting all filesystems except / and /dev");
+                do_unmounts();
                 launchd_log_vm_stats();
                 jobmgr_log(jm, LOG_DEBUG, "About to call: reboot(%s)", reboot_flags_to_C_names(jm->reboot_flags));
@@ -6695 +6698 @@
 
 }
+
+void
+do_unmounts(void)
+{
+        struct statfs buf[100];
+        int i, found, returned;
+
+        do {
+                returned = getfsstat(buf, sizeof(buf), MNT_NOWAIT);
+                found = 0;
+
+                if (!launchd_assumes(returned != -1)) {
+                        return;
+                }
+
+                for (i = 0; i < returned; i++) {
+                        if (strcmp(buf[i].f_mntonname, "/") == 0) {
+                                continue;
+                        } else if (strncmp(buf[i].f_mntonname, "/dev", strlen("/dev")) == 0) {
+                                continue;
+                        }
+
+                        runtime_syslog(LOG_DEBUG, "About to unmount: %s", buf[i].f_mntonname);
+                        if (launchd_assumes(unmount(buf[i].f_mntonname, 0) != -1)) {
+                                found++;
+                        }
+                }
+        } while ((returned == (sizeof(buf) / sizeof(buf[0]))) && (found > 0));
+}