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[PATCH] Don't export machine_restart, machine_halt, or machine_power_off.

Browse source 
machine_restart, machine_halt and machine_power_off are machine
specific hooks deep into the reboot logic, that modules
have no business messing with.  Usually code should be calling
kernel_restart, kernel_halt, kernel_power_off, or
emergency_restart. So don't export machine_restart,
machine_halt, and machine_power_off so we can catch buggy users.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eric W. Biederman 2005-07-26 11:36:01 -06:00 committed by Linus Torvalds
parent 16dcb4bbda
commit 59586e5a26
29 changed files with 0 additions and 152 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
arch/alpha/kernel/process.c
View file

@ -165,7 +165,6 @@ machine_restart(char *restart_cmd)
common_shutdown(LINUX_REBOOT_CMD_RESTART, restart_cmd);
}
EXPORT_SYMBOL(machine_restart);
void
machine_halt(void)
@ -173,7 +172,6 @@ machine_halt(void)
common_shutdown(LINUX_REBOOT_CMD_HALT, NULL);
}
EXPORT_SYMBOL(machine_halt);
void
machine_power_off(void)
@ -181,7 +179,6 @@ machine_power_off(void)
common_shutdown(LINUX_REBOOT_CMD_POWER_OFF, NULL);
}
EXPORT_SYMBOL(machine_power_off);
/* Used by sysrq-p, among others. I don't believe r9-r15 are ever
saved in the context it's used. */

4
arch/arm/kernel/process.c
View file

@ -131,7 +131,6 @@ void machine_halt(void)
{
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
@ -139,7 +138,6 @@ void machine_power_off(void)
pm_power_off();
}
EXPORT_SYMBOL(machine_power_off);
void machine_restart(char * __unused)
{
@ -169,8 +167,6 @@ void machine_restart(char * __unused)
while (1);
}
EXPORT_SYMBOL(machine_restart);
void __show_regs(struct pt_regs *regs)
{
unsigned long flags = condition_codes(regs);

5
arch/arm26/kernel/process.c
View file

@ -103,9 +103,6 @@ void machine_power_off(void)
{
}
EXPORT_SYMBOL(machine_halt);
EXPORT_SYMBOL(machine_power_off);
void machine_restart(char * __unused)
{
/*
@ -136,8 +133,6 @@ void machine_restart(char * __unused)
while (1);
}
EXPORT_SYMBOL(machine_restart);
void show_regs(struct pt_regs * regs)
{
unsigned long flags;

6
arch/cris/kernel/process.c
View file

@ -214,8 +214,6 @@ void machine_restart(char *cmd)
hard_reset_now();
}
EXPORT_SYMBOL(machine_restart);
/*
* Similar to machine_power_off, but don't shut off power. Add code
* here to freeze the system for e.g. post-mortem debug purpose when
@ -226,16 +224,12 @@ void machine_halt(void)
{
}
EXPORT_SYMBOL(machine_halt);
/* If or when software power-off is implemented, add code here. */
void machine_power_off(void)
{
}
EXPORT_SYMBOL(machine_power_off);
/*
* When a process does an "exec", machine state like FPU and debug
* registers need to be reset. This is a hook function for that.

6
arch/h8300/kernel/process.c
View file

@ -90,8 +90,6 @@ void machine_restart(char * __unused)
__asm__("jmp @@0");
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
local_irq_disable();
@ -99,8 +97,6 @@ void machine_halt(void)
for (;;);
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
local_irq_disable();
@ -108,8 +104,6 @@ void machine_power_off(void)
for (;;);
}
EXPORT_SYMBOL(machine_power_off);
void show_regs(struct pt_regs * regs)
{
printk("\nPC: %08lx Status: %02x",

5
arch/i386/kernel/reboot.c
View file

@ -337,14 +337,10 @@ void machine_restart(char * __unused)
machine_real_restart(jump_to_bios, sizeof(jump_to_bios));
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
lapic_shutdown();
@ -355,5 +351,4 @@ void machine_power_off(void)
pm_power_off();
}
EXPORT_SYMBOL(machine_power_off);

5
arch/i386/mach-visws/reboot.c
View file

@ -22,8 +22,6 @@ void machine_restart(char * __unused)
outb(PIIX4_RESET_VAL, PIIX4_RESET_PORT);
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off(void)
{
unsigned short pm_status;
@ -43,10 +41,7 @@ void machine_power_off(void)
outl(PIIX_SPECIAL_STOP, 0xCFC);
}
EXPORT_SYMBOL(machine_power_off);
void machine_halt(void)
{
}
EXPORT_SYMBOL(machine_halt);

5
arch/i386/mach-voyager/voyager_basic.c
View file

@ -278,8 +278,6 @@ machine_restart(char *cmd)
}
}
EXPORT_SYMBOL(machine_restart);
void
mca_nmi_hook(void)
{
@ -315,12 +313,9 @@ machine_halt(void)
machine_power_off();
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
if (pm_power_off)
pm_power_off();
}
EXPORT_SYMBOL(machine_power_off);

5
arch/ia64/kernel/process.c
View file

@ -807,16 +807,12 @@ machine_restart (char *restart_cmd)
(*efi.reset_system)(EFI_RESET_WARM, 0, 0, NULL);
}
EXPORT_SYMBOL(machine_restart);
void
machine_halt (void)
{
cpu_halt();
}
EXPORT_SYMBOL(machine_halt);
void
machine_power_off (void)
{
@ -825,4 +821,3 @@ machine_power_off (void)
machine_halt();
}
EXPORT_SYMBOL(machine_power_off);

6
arch/m32r/kernel/process.c
View file

@ -115,8 +115,6 @@ void machine_restart(char *__unused)
cpu_relax();
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
printk("Please push reset button!\n");
@ -124,15 +122,11 @@ void machine_halt(void)
cpu_relax();
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
/* M32R_FIXME */
}
EXPORT_SYMBOL(machine_power_off);
static int __init idle_setup (char *str)
{
if (!strncmp(str, "poll", 4)) {

6
arch/m68k/kernel/process.c
View file

@ -113,8 +113,6 @@ void machine_restart(char * __unused)
for (;;);
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
if (mach_halt)
@ -122,8 +120,6 @@ void machine_halt(void)
for (;;);
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
if (mach_power_off)
@ -131,8 +127,6 @@ void machine_power_off(void)
for (;;);
}
EXPORT_SYMBOL(machine_power_off);
void show_regs(struct pt_regs * regs)
{
printk("\n");

6
arch/m68knommu/kernel/process.c
View file

@ -80,8 +80,6 @@ void machine_restart(char * __unused)
for (;;);
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
if (mach_halt)
@ -89,8 +87,6 @@ void machine_halt(void)
for (;;);
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
if (mach_power_off)
@ -98,8 +94,6 @@ void machine_power_off(void)
for (;;);
}
EXPORT_SYMBOL(machine_power_off);
void show_regs(struct pt_regs * regs)
{
printk(KERN_NOTICE "\n");

5
arch/mips/kernel/reset.c
View file

@ -26,18 +26,13 @@ void machine_restart(char *command)
_machine_restart(command);
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
_machine_halt();
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
_machine_power_off();
}
EXPORT_SYMBOL(machine_power_off);

6
arch/parisc/kernel/process.c
View file

@ -150,8 +150,6 @@ void machine_restart(char *cmd)
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
/*
@ -160,8 +158,6 @@ void machine_halt(void)
*/
}
EXPORT_SYMBOL(machine_halt);
/*
* This routine is called from sys_reboot to actually turn off the
@ -187,8 +183,6 @@ void machine_power_off(void)
KERN_EMERG "Please power this system off now.");
}
EXPORT_SYMBOL(machine_power_off);
/*
* Create a kernel thread

6
arch/ppc/kernel/setup.c
View file

@ -121,8 +121,6 @@ void machine_restart(char *cmd)
ppc_md.restart(cmd);
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off(void)
{
#ifdef CONFIG_NVRAM
@ -131,8 +129,6 @@ void machine_power_off(void)
ppc_md.power_off();
}
EXPORT_SYMBOL(machine_power_off);
void machine_halt(void)
{
#ifdef CONFIG_NVRAM
@ -141,8 +137,6 @@ void machine_halt(void)
ppc_md.halt();
}
EXPORT_SYMBOL(machine_halt);
void (*pm_power_off)(void) = machine_power_off;
#ifdef CONFIG_TAU

3
arch/ppc64/kernel/setup.c
View file

@ -694,7 +694,6 @@ void machine_restart(char *cmd)
local_irq_disable();
while (1) ;
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off(void)
{
@ -707,7 +706,6 @@ void machine_power_off(void)
local_irq_disable();
while (1) ;
}
EXPORT_SYMBOL(machine_power_off);
void machine_halt(void)
{
@ -720,7 +718,6 @@ void machine_halt(void)
local_irq_disable();
while (1) ;
}
EXPORT_SYMBOL(machine_halt);
static int ppc64_panic_event(struct notifier_block *this,
unsigned long event, void *ptr)

6
arch/s390/kernel/setup.c
View file

@ -299,24 +299,18 @@ void machine_restart(char *command)
_machine_restart(command);
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
console_unblank();
_machine_halt();
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
console_unblank();
_machine_power_off();
}
EXPORT_SYMBOL(machine_power_off);
static void __init
add_memory_hole(unsigned long start, unsigned long end)
{

6
arch/sh/kernel/process.c
View file

@ -80,8 +80,6 @@ void machine_restart(char * __unused)
"mov.l @%1, %0" : : "r" (0x10000000), "r" (0x80000001));
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
#if defined(CONFIG_SH_HS7751RVOIP)
@ -96,8 +94,6 @@ void machine_halt(void)
cpu_sleep();
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
#if defined(CONFIG_SH_HS7751RVOIP)
@ -110,8 +106,6 @@ void machine_power_off(void)
#endif
}
EXPORT_SYMBOL(machine_power_off);
void show_regs(struct pt_regs * regs)
{
printk("\n");

6
arch/sparc/kernel/process.c
View file

@ -158,8 +158,6 @@ void machine_halt(void)
panic("Halt failed!");
}
EXPORT_SYMBOL(machine_halt);
void machine_restart(char * cmd)
{
char *p;
@ -180,8 +178,6 @@ void machine_restart(char * cmd)
panic("Reboot failed!");
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off(void)
{
#ifdef CONFIG_SUN_AUXIO
@ -191,8 +187,6 @@ void machine_power_off(void)
machine_halt();
}
EXPORT_SYMBOL(machine_power_off);
static DEFINE_SPINLOCK(sparc_backtrace_lock);
void __show_backtrace(unsigned long fp)

2
arch/sparc64/kernel/power.c
View file

@ -69,8 +69,6 @@ void machine_power_off(void)
machine_halt();
}
EXPORT_SYMBOL(machine_power_off);
#ifdef CONFIG_PCI
static int powerd(void *__unused)
{

4
arch/sparc64/kernel/process.c
View file

@ -124,8 +124,6 @@ void machine_halt(void)
panic("Halt failed!");
}
EXPORT_SYMBOL(machine_halt);
void machine_alt_power_off(void)
{
if (!serial_console && prom_palette)
@ -154,8 +152,6 @@ void machine_restart(char * cmd)
panic("Reboot failed!");
}
EXPORT_SYMBOL(machine_restart);
static void show_regwindow32(struct pt_regs *regs)
{
struct reg_window32 __user *rw;

6
arch/um/kernel/reboot.c
View file

@ -49,23 +49,17 @@ void machine_restart(char * __unused)
CHOOSE_MODE(reboot_tt(), reboot_skas());
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off(void)
{
uml_cleanup();
CHOOSE_MODE(halt_tt(), halt_skas());
}
EXPORT_SYMBOL(machine_power_off);
void machine_halt(void)
{
machine_power_off();
}
EXPORT_SYMBOL(machine_halt);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically

6
arch/v850/kernel/anna.c
View file

@ -132,8 +132,6 @@ void machine_restart (char *__unused)
asm ("jmp r0"); /* Jump to the reset vector. */
}
EXPORT_SYMBOL(machine_restart);
void machine_halt (void)
{
#ifdef CONFIG_RESET_GUARD
@ -145,15 +143,11 @@ void machine_halt (void)
asm ("halt; nop; nop; nop; nop; nop");
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off (void)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_power_off);
/* Called before configuring an on-chip UART. */
void anna_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
{

6
arch/v850/kernel/as85ep1.c
View file

@ -160,8 +160,6 @@ void machine_restart (char *__unused)
asm ("jmp r0"); /* Jump to the reset vector. */
}
EXPORT_SYMBOL(machine_restart);
void machine_halt (void)
{
#ifdef CONFIG_RESET_GUARD
@ -173,15 +171,11 @@ void machine_halt (void)
asm ("halt; nop; nop; nop; nop; nop");
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off (void)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_power_off);
/* Called before configuring an on-chip UART. */
void as85ep1_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
{

6
arch/v850/kernel/fpga85e2c.c
View file

@ -121,22 +121,16 @@ void machine_halt (void)
}
}
EXPORT_SYMBOL(machine_halt);
void machine_restart (char *__unused)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off (void)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_power_off);
/* Interrupts */

6
arch/v850/kernel/rte_cb.c
View file

@ -67,8 +67,6 @@ void machine_restart (char *__unused)
asm ("jmp r0"); /* Jump to the reset vector. */
}
EXPORT_SYMBOL(machine_restart);
/* This says `HALt.' in LEDese. */
static unsigned char halt_leds_msg[] = { 0x76, 0x77, 0x38, 0xF8 };
@ -89,15 +87,11 @@ void machine_halt (void)
asm ("halt; nop; nop; nop; nop; nop");
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off (void)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_power_off);
/* Animated LED display for timer tick. */

6
arch/v850/kernel/sim.c
View file

@ -104,24 +104,18 @@ void machine_restart (char *__unused)
V850_SIM_SYSCALL (exit, 0);
}
EXPORT_SYMBOL(machine_restart);
void machine_halt (void)
{
V850_SIM_SYSCALL (write, 1, "HALT\n", 5);
V850_SIM_SYSCALL (exit, 0);
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off (void)
{
V850_SIM_SYSCALL (write, 1, "POWER OFF\n", 10);
V850_SIM_SYSCALL (exit, 0);
}
EXPORT_SYMBOL(machine_power_off);
/* Load data from a file called NAME into ram. The address and length
of the data image are returned in ADDR and LEN. */

5
arch/v850/kernel/sim85e2.c
View file

@ -184,18 +184,13 @@ void machine_halt (void)
for (;;) {}
}
EXPORT_SYMBOL(machine_halt);
void machine_restart (char *__unused)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off (void)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_power_off);

5
arch/x86_64/kernel/reboot.c
View file

@ -150,18 +150,13 @@ void machine_restart(char * __unused)
}
}
EXPORT_SYMBOL(machine_restart);
void machine_halt(void)
{
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off(void)
{
if (pm_power_off)
pm_power_off();
}
EXPORT_SYMBOL(machine_power_off);