X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=kernel%2Fsys.c;h=f91218a5463e48e9716b3d14a4d54500477c6a6d;hb=f30a1211119741d2c1063ad613bec8434fb9d099;hp=b6941e06d5d507a141a135294c8d29e62ddd59d3;hpb=6150c32589d1976ca8a5c987df951088c05a7542;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/sys.c b/kernel/sys.c
index b6941e06d5d..f91218a5463 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/kexec.h>
 #include <linux/workqueue.h>
+#include <linux/capability.h>
 #include <linux/device.h>
 #include <linux/key.h>
 #include <linux/times.h>
@@ -223,6 +224,18 @@ int unregister_reboot_notifier(struct notifier_block * nb)
 
 EXPORT_SYMBOL(unregister_reboot_notifier);
 
+#ifndef CONFIG_SECURITY
+int capable(int cap)
+{
+        if (cap_raised(current->cap_effective, cap)) {
+	       current->flags |= PF_SUPERPRIV;
+	       return 1;
+        }
+        return 0;
+}
+EXPORT_SYMBOL(capable);
+#endif
+
 static int set_one_prio(struct task_struct *p, int niceval, int error)
 {
 	int no_nice;
@@ -415,7 +428,7 @@ void kernel_kexec(void)
 {
 #ifdef CONFIG_KEXEC
 	struct kimage *image;
-	image = xchg(&kexec_image, 0);
+	image = xchg(&kexec_image, NULL);
 	if (!image) {
 		return;
 	}
@@ -427,23 +440,25 @@ void kernel_kexec(void)
 }
 EXPORT_SYMBOL_GPL(kernel_kexec);
 
+void kernel_shutdown_prepare(enum system_states state)
+{
+	notifier_call_chain(&reboot_notifier_list,
+		(state == SYSTEM_HALT)?SYS_HALT:SYS_POWER_OFF, NULL);
+	system_state = state;
+	device_shutdown();
+}
 /**
  *	kernel_halt - halt the system
  *
  *	Shutdown everything and perform a clean system halt.
  */
-void kernel_halt_prepare(void)
-{
-	notifier_call_chain(&reboot_notifier_list, SYS_HALT, NULL);
-	system_state = SYSTEM_HALT;
-	device_shutdown();
-}
 void kernel_halt(void)
 {
-	kernel_halt_prepare();
+	kernel_shutdown_prepare(SYSTEM_HALT);
 	printk(KERN_EMERG "System halted.\n");
 	machine_halt();
 }
+
 EXPORT_SYMBOL_GPL(kernel_halt);
 
 /**
@@ -451,20 +466,13 @@ EXPORT_SYMBOL_GPL(kernel_halt);
  *
  *	Shutdown everything and perform a clean system power_off.
  */
-void kernel_power_off_prepare(void)
-{
-	notifier_call_chain(&reboot_notifier_list, SYS_POWER_OFF, NULL);
-	system_state = SYSTEM_POWER_OFF;
-	device_shutdown();
-}
 void kernel_power_off(void)
 {
-	kernel_power_off_prepare();
+	kernel_shutdown_prepare(SYSTEM_POWER_OFF);
 	printk(KERN_EMERG "Power down.\n");
 	machine_power_off();
 }
 EXPORT_SYMBOL_GPL(kernel_power_off);
-
 /*
  * Reboot system call: for obvious reasons only root may call it,
  * and even root needs to set up some magic numbers in the registers