patch-2.2.11 linux/arch/mips/kernel/ipc.c

• Lines: 155
• Date: Mon Aug 9 12:04:38 1999
• Orig file: v2.2.10/linux/arch/mips/kernel/ipc.c
• Orig date: Fri May 8 00:13:23 1998

diff -u --recursive --new-file v2.2.10/linux/arch/mips/kernel/ipc.c linux/arch/mips/kernel/ipc.c
@@ -1,5 +1,4 @@
-/*
- * linux/arch/mips/kernel/ipc.c
+/* $Id$
  *
  * This file contains various random system calls that
  * have a non-standard calling sequence on the Linux/MIPS
@@ -22,106 +21,92 @@
  *
  * This is really horribly ugly.  FIXME: Get rid of this wrapper.
  */
-asmlinkage int sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)
+asmlinkage int sys_ipc (uint call, int first, int second,
+			int third, void *ptr, long fifth)
 {
 	int version, ret;
 
-	lock_kernel();
 	version = call >> 16; /* hack for backward compatibility */
 	call &= 0xffff;
 
 	if (call <= SEMCTL)
 		switch (call) {
 		case SEMOP:
-			ret = sys_semop (first, (struct sembuf *)ptr, second);
-			goto out;
+			return sys_semop (first, (struct sembuf *)ptr, second);
 		case SEMGET:
-			ret = sys_semget (first, second, third);
-			goto out;
+			return sys_semget (first, second, third);
 		case SEMCTL: {
 			union semun fourth;
-			ret = -EINVAL;
 			if (!ptr)
-				goto out;
-			ret = -EFAULT;
+				return -EINVAL;
 			if (get_user(fourth.__pad, (void **) ptr))
-				goto out;	
-			ret = sys_semctl (first, second, third, fourth);
-			goto out;
+				return -EFAULT;
+			return sys_semctl (first, second, third, fourth);
 			}
 		default:
-			ret = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
+
 	if (call <= MSGCTL) 
 		switch (call) {
 		case MSGSND:
-			ret = sys_msgsnd (first, (struct msgbuf *) ptr, 
+			return sys_msgsnd (first, (struct msgbuf *) ptr, 
 					  second, third);
-			goto out;
 		case MSGRCV:
 			switch (version) {
 			case 0: {
 				struct ipc_kludge tmp;
-				ret = -EINVAL;
 				if (!ptr)
-					goto out;
-				ret = -EFAULT;
-				if (copy_from_user(&tmp,(struct ipc_kludge *) ptr, 
-								   sizeof (tmp)))
-					goto out; 	
-				ret = sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp, third);
-				goto out;
+					return -EINVAL;
+				
+				if (copy_from_user(&tmp,
+						   (struct ipc_kludge *) ptr, 
+						   sizeof (tmp)))
+					return -EFAULT;
+				return sys_msgrcv (first, tmp.msgp, second,
+						   tmp.msgtyp, third);
 				}
-			case 1: default:
-				ret = sys_msgrcv (first, (struct msgbuf *) ptr, second, fifth, third);
-				goto out;
+			default:
+				return sys_msgrcv (first,
+						   (struct msgbuf *) ptr,
+						   second, fifth, third);
 			}
 		case MSGGET:
-			ret = sys_msgget ((key_t) first, second);
-			goto out;
+			return sys_msgget ((key_t) first, second);
 		case MSGCTL:
-			ret = sys_msgctl (first, second, (struct msqid_ds *) ptr);
-			goto out;
+			return sys_msgctl (first, second,
+					   (struct msqid_ds *) ptr);
 		default:
-			ret = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
 	if (call <= SHMCTL) 
 		switch (call) {
 		case SHMAT:
 			switch (version) {
-			case 0: default: {
+			default: {
 				ulong raddr;
-				ret = sys_shmat (first, (char *) ptr, second, &raddr);
+				ret = sys_shmat (first, (char *) ptr,
+						 second, &raddr);
 				if (ret)
-					goto out;
-				ret = put_user (raddr, (ulong *) third);
-				goto out;
+					return ret;
+				return put_user (raddr, (ulong *) third);
 			}
 			case 1:	/* iBCS2 emulator entry point */
-				ret = -EINVAL;
 				if (!segment_eq(get_fs(), get_ds()))
-					goto out;
-				ret = sys_shmat (first, (char *) ptr, second, (ulong *) third);
-				goto out;
+					return -EINVAL;
+				return sys_shmat (first, (char *) ptr,
+						  second, (ulong *) third);
 			}
 		case SHMDT: 
-			ret = sys_shmdt ((char *)ptr);
-			goto out;
+			return sys_shmdt ((char *)ptr);
 		case SHMGET:
-			ret = sys_shmget (first, second, third);
-			goto out;
+			return sys_shmget (first, second, third);
 		case SHMCTL:
-			ret = sys_shmctl (first, second, (struct shmid_ds *) ptr);
-			goto out;
+			return sys_shmctl (first, second,
+					   (struct shmid_ds *) ptr);
 		default:
-			ret = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
-	else
-		ret = -EINVAL;
-out:
-	unlock_kernel();
-	return ret;
+	
+	return -EINVAL;
 }