Add generic sys_old_mmap()

Add a generic implementation of the old mmap() syscall, which expects its
argument in a memory block and switch all architectures over to use it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 2 insertions, 35 deletions

diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h
index 1582c2db1c86..d801154310ea 100644
--- a/arch/m68k/include/asm/unistd.h
+++ b/arch/m68k/include/asm/unistd.h
@@ -363,6 +363,7 @@
 #define __ARCH_WANT_SYS_LLSEEK
 #define __ARCH_WANT_SYS_NICE
 #define __ARCH_WANT_SYS_OLD_GETRLIMIT
+#define __ARCH_WANT_SYS_OLD_MMAP
 #define __ARCH_WANT_SYS_OLD_SELECT
 #define __ARCH_WANT_SYS_OLDUMOUNT
 #define __ARCH_WANT_SYS_SIGPENDING
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 09b1f09be3a6..2391bdff0996 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -518,7 +518,7 @@ sys_call_table:
 	.long sys_swapon
 	.long sys_reboot
 	.long sys_old_readdir
-	.long old_mmap		/* 90 */
+	.long sys_old_mmap	/* 90 */
 	.long sys_munmap
 	.long sys_truncate
 	.long sys_ftruncate
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index 03b58dd86c7a..7b309e7b6cef 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -47,40 +47,6 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
 }
 
 /*
- * Perform the select(nd, in, out, ex, tv) and mmap() system
- * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to
- * handle more than 4 system call parameters, so these system calls
- * used a memory block for parameter passing..
- */
-
-struct mmap_arg_struct {
-	unsigned long addr;
-	unsigned long len;
-	unsigned long prot;
-	unsigned long flags;
-	unsigned long fd;
-	unsigned long offset;
-};
-
-asmlinkage int old_mmap(struct mmap_arg_struct __user *arg)
-{
-	struct mmap_arg_struct a;
-	int error = -EFAULT;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		goto out;
-
-	error = -EINVAL;
-	if (a.offset & ~PAGE_MASK)
-		goto out;
-
-	error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
-			       a.offset >> PAGE_SHIFT);
-out:
-	return error;
-}
-
-/*
  * sys_ipc() is the de-multiplexer for the SysV IPC calls..
  *
  * This is really horribly ugly.