/* This is a non __init function. Force it to be noinline otherwise gcc
* makes it inline to init() and it becomes part of init.text section
*/
static noinline int init_post(void)
{
unsigned long flags;
flags=MS_MGC_VAL;
flags&=~MS_NOSUID;
flags&=~MS_SYNCHRONOUS;
#ifdef CONFIG_PROC_FS
if (sys_mount("proc", "/proc", "proc", flags, NULL) < 0)
printk("mount /proc file system fail!\n");
else
printk("mount /proc file system ok!\n");
#ifdef CONFIG_USB_DEVICEFS
if (sys_mount("usbfs", "/proc/bus/usb", "usbfs", flags, NULL) < 0)
printk("mount /proc/bus/usb file system fail!\n");
else
printk("mount /proc/bus/usb file system ok!\n");
#endif
#endif
#ifdef CONFIG_SYSFS
if (sys_mount("sysfs", "/sys", "sysfs", flags, NULL) < 0)
printk("mount /sys file system fail!\n");
else
printk("mount /sys file system ok!\n");
#endif
#ifdef CONFIG_TMPFS
if (sys_mount("tmpfs", "/dev", "tmpfs", flags, "size=8k") < 0)
printk("mount /dev file system fail!\n");
else
printk("mount /dev file system ok!\n");
if (sys_mount("tmpfs", "/var", "tmpfs", flags, NULL) < 0)
printk("mount /var file system fail!\n");
else
printk("mount /var file system ok!\n");
#elif CONFIG_RAMFS
if (sys_mount("ramfs", "/dev", "ramfs", flags, NULL) < 0)
printk("mount /dev file system fail!\n");
else
printk("mount /dev file system ok!\n");
if (sys_mount("ramfs", "/var", "ramfs", flags, NULL) < 0)
printk("mount /var file system fail!\n");
else
printk("mount /var file system ok!\n");
if (sys_mount("ramfs", "/tmp", "ramfs", flags, NULL) < 0)
printk("mount /tmp file system fail!\n");
else
printk("mount /tmp file system ok!\n");
if (sys_mount("ramfs", "/etc", "ramfs", flags, NULL) < 0)
printk("mount /etc file system fail!\n");
else
printk("mount /etc file system ok!\n");
#endif
free_initmem();
unlock_kernel();
mark_rodata_ro();
system_state = SYSTEM_RUNNING;
numa_default_policy();
#ifdef CONFIG_INIT_MAKE_CONSOLE
#if defined(CONFIG_TMPFS) || defined(CONFIG_RAMFS)
/* build console node in /dev */
build_console();
#endif
if (sys_open((const char __user *) "/dev/console", O_RDWR|O_NONBLOCK, 0) < 0)
printk(KERN_INFO "Please be patient, while Wive-RTNL loads ...\n");
#endif
(void) sys_dup(0);
(void) sys_dup(0);
if (ramdisk_execute_command) {
run_init_process(ramdisk_execute_command);
printk(KERN_WARNING "Failed to execute %s\n",
ramdisk_execute_command);
}
/*
* We try each of these until one succeeds.
*
* The Bourne shell can be used instead of init if we are
* trying to recover a really broken machine.
*/
if (execute_command) {
run_init_process(execute_command);
printk(KERN_WARNING "Failed to execute %s. Attempting "
"defaults...\n", execute_command);
}
#ifndef CONFIG_RT2880_ROOTFS_IN_RAM
run_init_process("/linuxrc");
#endif
panic("No init found. Try passing init= option to kernel.");
return 0;
}
static int __init kernel_init(void * unused)
{
lock_kernel();
/*
* init can allocate pages on any node
*/
set_mems_allowed(node_states[N_HIGH_MEMORY]);
/*
* init can run on any cpu.
*/
set_cpus_allowed_ptr(current, cpu_all_mask);
/*
* Tell the world that we're going to be the grim
* reaper of innocent orphaned children.
*
* We don't want people to have to make incorrect
* assumptions about where in the task array this
* can be found.
*/
init_pid_ns.child_reaper = current;
cad_pid = task_pid(current);
smp_prepare_cpus(setup_max_cpus);
do_pre_smp_initcalls();
start_boot_trace();
smp_init();
sched_init_smp();
do_basic_setup();
/* Open the /dev/console on the rootfs, this should never fail */
if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
{
build_console();
if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
{
printk(KERN_WARNING "Warning: unable to open an initial console.\n");
}
//printk(KERN_WARNING "Warning: unable to open an initial console.\n");
}
(void) sys_dup(0);
(void) sys_dup(0);
/*
* check if there is an early userspace init. If yes, let it do all
* the work
*/
if (!ramdisk_execute_command)
ramdisk_execute_command = "/init";
if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) {
ramdisk_execute_command = NULL;
prepare_namespace();
}
/*
* Ok, we have completed the initial bootup, and
* we're essentially up and running. Get rid of the
* initmem segments and start the user-mode stuff..
*/
init_post();
return 0;
}
