X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=kernel%2Fsys.c;h=241507f23eca097871bec58f5976476f352f3d75;hb=b3a297d15b8f1be8304f0e0a3bbbb47b5f019939;hp=2d39a84cd8575e6295f666421cee01b41652b3b1;hpb=f6774cbcad7aa21ac0d4fc92a5e4deae901f6534;p=cascardo%2Flinux.git

diff --git a/kernel/sys.c b/kernel/sys.c
index 2d39a84cd857..241507f23eca 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2015,7 +2015,6 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 				break;
 			}
 			me->pdeath_signal = arg2;
-			error = 0;
 			break;
 		case PR_GET_PDEATHSIG:
 			error = put_user(me->pdeath_signal, (int __user *)arg2);
@@ -2029,7 +2028,6 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 				break;
 			}
 			set_dumpable(me->mm, arg2);
-			error = 0;
 			break;
 
 		case PR_SET_UNALIGN:
@@ -2056,10 +2054,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 		case PR_SET_TIMING:
 			if (arg2 != PR_TIMING_STATISTICAL)
 				error = -EINVAL;
-			else
-				error = 0;
 			break;
-
 		case PR_SET_NAME:
 			comm[sizeof(me->comm)-1] = 0;
 			if (strncpy_from_user(comm, (char __user *)arg2,
@@ -2067,20 +2062,19 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 				return -EFAULT;
 			set_task_comm(me, comm);
 			proc_comm_connector(me);
-			return 0;
+			break;
 		case PR_GET_NAME:
 			get_task_comm(comm, me);
 			if (copy_to_user((char __user *)arg2, comm,
 					 sizeof(comm)))
 				return -EFAULT;
-			return 0;
+			break;
 		case PR_GET_ENDIAN:
 			error = GET_ENDIAN(me, arg2);
 			break;
 		case PR_SET_ENDIAN:
 			error = SET_ENDIAN(me, arg2);
 			break;
-
 		case PR_GET_SECCOMP:
 			error = prctl_get_seccomp();
 			break;
@@ -2108,7 +2102,6 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 					current->default_timer_slack_ns;
 			else
 				current->timer_slack_ns = arg2;
-			error = 0;
 			break;
 		case PR_MCE_KILL:
 			if (arg4 | arg5)
@@ -2134,7 +2127,6 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 			default:
 				return -EINVAL;
 			}
-			error = 0;
 			break;
 		case PR_MCE_KILL_GET:
 			if (arg2 | arg3 | arg4 | arg5)
@@ -2153,7 +2145,6 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 			break;
 		case PR_SET_CHILD_SUBREAPER:
 			me->signal->is_child_subreaper = !!arg2;
-			error = 0;
 			break;
 		case PR_GET_CHILD_SUBREAPER:
 			error = put_user(me->signal->is_child_subreaper,
@@ -2195,46 +2186,52 @@ static void argv_cleanup(struct subprocess_info *info)
 	argv_free(info->argv);
 }
 
-/**
- * orderly_poweroff - Trigger an orderly system poweroff
- * @force: force poweroff if command execution fails
- *
- * This may be called from any context to trigger a system shutdown.
- * If the orderly shutdown fails, it will force an immediate shutdown.
- */
-int orderly_poweroff(bool force)
+static int __orderly_poweroff(void)
 {
 	int argc;
-	char **argv = argv_split(GFP_ATOMIC, poweroff_cmd, &argc);
+	char **argv;
 	static char *envp[] = {
 		"HOME=/",
 		"PATH=/sbin:/bin:/usr/sbin:/usr/bin",
 		NULL
 	};
-	int ret = -ENOMEM;
+	int ret;
 
+	argv = argv_split(GFP_ATOMIC, poweroff_cmd, &argc);
 	if (argv == NULL) {
 		printk(KERN_WARNING "%s failed to allocate memory for \"%s\"\n",
 		       __func__, poweroff_cmd);
-		goto out;
+		return -ENOMEM;
 	}
 
 	ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_NO_WAIT,
 				      NULL, argv_cleanup, NULL);
-out:
-	if (likely(!ret))
-		return 0;
-
 	if (ret == -ENOMEM)
 		argv_free(argv);
 
-	if (force) {
+	return ret;
+}
+
+/**
+ * orderly_poweroff - Trigger an orderly system poweroff
+ * @force: force poweroff if command execution fails
+ *
+ * This may be called from any context to trigger a system shutdown.
+ * If the orderly shutdown fails, it will force an immediate shutdown.
+ */
+int orderly_poweroff(bool force)
+{
+	int ret = __orderly_poweroff();
+
+	if (ret && force) {
 		printk(KERN_WARNING "Failed to start orderly shutdown: "
 		       "forcing the issue\n");
 
-		/* I guess this should try to kick off some daemon to
-		   sync and poweroff asap.  Or not even bother syncing
-		   if we're doing an emergency shutdown? */
+		/*
+		 * I guess this should try to kick off some daemon to sync and
+		 * poweroff asap.  Or not even bother syncing if we're doing an
+		 * emergency shutdown?
+		 */
 		emergency_sync();
 		kernel_power_off();
 	}