int
boot(int paniced, int howto, char *command)
{
struct proc *p = current_proc(); /* XXX */
int hostboot_option=0;
if (!OSCompareAndSwap(0, 1, &system_inshutdown)) {
if ( (howto&RB_QUICK) == RB_QUICK)
goto force_reboot;
return (EBUSY);
}
/*
* Temporary hack to notify the power management root domain
* that the system will shut down.
*/
IOSystemShutdownNotification();
md_prepare_for_shutdown(paniced, howto, command);
if ((howto&RB_QUICK)==RB_QUICK) {
printf("Quick reboot...\n");
if ((howto&RB_NOSYNC)==0) {
sync(p, (void *)NULL, (int *)NULL);
}
}
else if ((howto&RB_NOSYNC)==0) {
int iter, nbusy;
printf("syncing disks... ");
/*
* Release vnodes held by texts before sync.
*/
/* handle live procs (deallocate their root and current directories). */
proc_shutdown();
#if CONFIG_AUDIT
audit_shutdown();
#endif
if (unmountroot_pre_hook != NULL)
unmountroot_pre_hook();
sync(p, (void *)NULL, (int *)NULL);
/*
* Now that all processes have been terminated and system is
* sync'ed up, suspend init
*/
if (initproc && p != initproc)
task_suspend(initproc->task);
if (kdebug_enable)
kdbg_dump_trace_to_file("/var/log/shutdown/shutdown.trace");
/*
* Unmount filesystems
*/
vfs_unmountall();
/* Wait for the buffer cache to clean remaining dirty buffers */
for (iter = 0; iter < 100; iter++) {
nbusy = count_busy_buffers();
if (nbusy == 0)
break;
printf("%d ", nbusy);
delay_for_interval( 1 * nbusy, 1000 * 1000);
}
if (nbusy)
printf("giving up\n");
else
printf("done\n");
}
#if NETWORKING
/*
* Can't just use an splnet() here to disable the network
* because that will lock out softints which the disk
* drivers depend on to finish DMAs.
*/
if_down_all();
#endif /* NETWORKING */
force_reboot:
if (howto & RB_POWERDOWN)
hostboot_option = HOST_REBOOT_HALT;
if (howto & RB_HALT)
hostboot_option = HOST_REBOOT_HALT;
if (paniced == RB_PANIC)
hostboot_option = HOST_REBOOT_HALT;
if (howto & RB_UPSDELAY) {
hostboot_option = HOST_REBOOT_UPSDELAY;
}
host_reboot(host_priv_self(), hostboot_option);
/*
* should not be reached
*/
return (0);
}
int
reboot_kernel(int howto, char *message)
{
int hostboot_option=0;
if (!OSCompareAndSwap(0, 1, &system_inshutdown)) {
if ( (howto&RB_QUICK) == RB_QUICK)
goto force_reboot;
return (EBUSY);
}
/*
* Temporary hack to notify the power management root domain
* that the system will shut down.
*/
IOSystemShutdownNotification();
if ((howto&RB_QUICK)==RB_QUICK) {
printf("Quick reboot...\n");
if ((howto&RB_NOSYNC)==0) {
sync((proc_t)NULL, (void *)NULL, (int *)NULL);
}
}
else if ((howto&RB_NOSYNC)==0) {
int iter, nbusy;
printf("syncing disks... ");
/*
* Release vnodes held by texts before sync.
*/
/* handle live procs (deallocate their root and current directories), suspend initproc */
proc_shutdown();
#if CONFIG_AUDIT
audit_shutdown();
#endif
if (unmountroot_pre_hook != NULL)
unmountroot_pre_hook();
sync((proc_t)NULL, (void *)NULL, (int *)NULL);
if (kdebug_enable)
kdbg_dump_trace_to_file("/var/log/shutdown/shutdown.trace");
/*
* Unmount filesystems
*/
#if DEVELOPMENT || DEBUG
if (!(howto & RB_PANIC) || !kdp_has_polled_corefile())
#endif /* DEVELOPMENT || DEBUG */
{
vfs_unmountall();
}
/* Wait for the buffer cache to clean remaining dirty buffers */
for (iter = 0; iter < 100; iter++) {
nbusy = count_busy_buffers();
if (nbusy == 0)
break;
printf("%d ", nbusy);
delay_for_interval( 1 * nbusy, 1000 * 1000);
}
if (nbusy)
printf("giving up\n");
else
printf("done\n");
}
#if NETWORKING
/*
* Can't just use an splnet() here to disable the network
* because that will lock out softints which the disk
* drivers depend on to finish DMAs.
*/
if_down_all();
#endif /* NETWORKING */
force_reboot:
if (howto & RB_PANIC) {
if (strncmp(message, "Kernel memory has exceeded limits", 33) == 0) {
kernel_hwm_panic_info();
}
panic ("userspace panic: %s", message);
}
if (howto & RB_POWERDOWN)
hostboot_option = HOST_REBOOT_HALT;
if (howto & RB_HALT)
hostboot_option = HOST_REBOOT_HALT;
if (howto & RB_UPSDELAY) {
hostboot_option = HOST_REBOOT_UPSDELAY;
}
host_reboot(host_priv_self(), hostboot_option);
/*
* should not be reached
*/
return (0);
}
