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From: Hong Liu <hong.liu@intel.com>
To: akpm@osdl.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 2.6] fix mmap() return value to conform to POSIX
Date: Mon, 21 Mar 2005 18:26:39 +0800	[thread overview]
Message-ID: <1111400799.3548.7.camel@devlinux-hong> (raw)

POSIX said:
mmap() should return [EOVERFLOW] if the file is a regular file and the
value of off + len exceeds the offset maximum established in the open
file description associated with fildes.

--- a/mm/mmap.c.orig 2005-03-16 14:08:59.116052416 +0800
+++ b/mm/mmap.c      2005-03-16 14:10:16.167338840 +0800
@@ -906,7 +906,7 @@ unsigned long do_mmap_pgoff(struct file
        
	/* offset overflow? */
        if ((pgoff + (len >> PAGE_SHIFT)) < pgoff)
-               return -EINVAL;
+               return -EOVERFLOW;

        /* Too many mappings? */
        if (mm->map_count > sysctl_max_map_count)



                 reply	other threads:[~2005-03-21 10:33 UTC|newest]

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