1 files changed, 58 insertions, 6 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index f723522e6986..bce933ebb29f 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -28,6 +28,7 @@
 #include <linux/suspend.h>
 #include <linux/tty.h>
 #include <linux/signal.h>
+#include <linux/cn_proc.h>
 
 #include <linux/compat.h>
 #include <linux/syscalls.h>
@@ -361,17 +362,38 @@ out_unlock:
         return retval;
 }
 
+/**
+ *      emergency_restart - reboot the system
+ *
+ *      Without shutting down any hardware or taking any locks
+ *      reboot the system.  This is called when we know we are in
+ *      trouble so this is our best effort to reboot.  This is
+ *      safe to call in interrupt context.
+ */
 void emergency_restart(void)
 {
         machine_emergency_restart();
 }
 EXPORT_SYMBOL_GPL(emergency_restart);
 
-void kernel_restart(char *cmd)
+void kernel_restart_prepare(char *cmd)
 {
         notifier_call_chain(&reboot_notifier_list, SYS_RESTART, cmd);
         system_state = SYSTEM_RESTART;
         device_shutdown();
+}
+
+/**
+ *      kernel_restart - reboot the system
+ *      @cmd: pointer to buffer containing command to execute for restart
+ *              or %NULL
+ *
+ *      Shutdown everything and perform a clean reboot.
+ *      This is not safe to call in interrupt context.
+ */
+void kernel_restart(char *cmd)
+{
+        kernel_restart_prepare(cmd);
         if (!cmd) {
                 printk(KERN_EMERG "Restarting system.\n");
         } else {
@@ -382,6 +404,12 @@ void kernel_restart(char *cmd)
 }
 EXPORT_SYMBOL_GPL(kernel_restart);
 
+/**
+ *      kernel_kexec - reboot the system
+ *
+ *      Move into place and start executing a preloaded standalone
+ *      executable.  If nothing was preloaded return an error.
+ */
 void kernel_kexec(void)
 {
 #ifdef CONFIG_KEXEC
@@ -390,9 +418,7 @@ void kernel_kexec(void)
         if (!image) {
                 return;
         }
-        notifier_call_chain(&reboot_notifier_list, SYS_RESTART, NULL);
-        system_state = SYSTEM_RESTART;
-        device_shutdown();
+        kernel_restart_prepare(NULL);
         printk(KERN_EMERG "Starting new kernel\n");
         machine_shutdown();
         machine_kexec(image);
@@ -400,21 +426,39 @@ void kernel_kexec(void)
 }
 EXPORT_SYMBOL_GPL(kernel_kexec);
 
-void kernel_halt(void)
+/**
+ *      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();
         printk(KERN_EMERG "System halted.\n");
         machine_halt();
 }
 EXPORT_SYMBOL_GPL(kernel_halt);
 
-void kernel_power_off(void)
+/**
+ *      kernel_power_off - power_off the system
+ *
+ *      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();
         printk(KERN_EMERG "Power down.\n");
         machine_power_off();
 }
@@ -583,6 +627,7 @@ asmlinkage long sys_setregid(gid_t rgid, gid_t egid)
         current->egid = new_egid;
         current->gid = new_rgid;
         key_fsgid_changed(current);
+        proc_id_connector(current, PROC_EVENT_GID);
         return 0;
 }
 
@@ -622,6 +667,7 @@ asmlinkage long sys_setgid(gid_t gid)
                 return -EPERM;
 
         key_fsgid_changed(current);
+        proc_id_connector(current, PROC_EVENT_GID);
         return 0;
 }
   
@@ -711,6 +757,7 @@ asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
         current->fsuid = current->euid;
 
         key_fsuid_changed(current);
+        proc_id_connector(current, PROC_EVENT_UID);
 
         return security_task_post_setuid(old_ruid, old_euid, old_suid, LSM_SETID_RE);
 }
@@ -758,6 +805,7 @@ asmlinkage long sys_setuid(uid_t uid)
         current->suid = new_suid;
 
         key_fsuid_changed(current);
+        proc_id_connector(current, PROC_EVENT_UID);
 
         return security_task_post_setuid(old_ruid, old_euid, old_suid, LSM_SETID_ID);
 }
@@ -806,6 +854,7 @@ asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid)
                 current->suid = suid;
 
         key_fsuid_changed(current);
+        proc_id_connector(current, PROC_EVENT_UID);
 
         return security_task_post_setuid(old_ruid, old_euid, old_suid, LSM_SETID_RES);
 }
@@ -858,6 +907,7 @@ asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid)
                 current->sgid = sgid;
 
         key_fsgid_changed(current);
+        proc_id_connector(current, PROC_EVENT_GID);
         return 0;
 }
 
@@ -900,6 +950,7 @@ asmlinkage long sys_setfsuid(uid_t uid)
         }
 
         key_fsuid_changed(current);
+        proc_id_connector(current, PROC_EVENT_UID);
 
         security_task_post_setuid(old_fsuid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS);
 
@@ -928,6 +979,7 @@ asmlinkage long sys_setfsgid(gid_t gid)
                 }
                 current->fsgid = gid;
                 key_fsgid_changed(current);
+                proc_id_connector(current, PROC_EVENT_GID);
         }
         return old_fsgid;
 }