From: Jamie Lokier <jamie@shareable.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: chris@scary.beasts.org, akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: [PATCH] Use get_user for 64-bit read in sendfile64
Date: Mon, 19 Apr 2004 11:17:31 +0100 [thread overview]
Message-ID: <20040419101731.GD13007@mail.shareable.org> (raw)
In-Reply-To: <20040419101446.GC13007@mail.shareable.org>
Patch: sendfile64_get_user-2.6.5
Requires: uaccess64-2.6.5-jl2
Use get_user instead of copy_from_user to read a loff_t.
Compiled output is identical on i386.
--- orig-2.6.5/fs/read_write.c 2004-04-14 08:29:43.000000000 +0100
+++ uaccess64-2.6.5/fs/read_write.c 2004-04-19 10:35:35.000000000 +0100
@@ -644,7 +644,7 @@
ssize_t ret;
if (offset) {
- if (unlikely(copy_from_user(&pos, offset, sizeof(loff_t))))
+ if (unlikely(get_user(pos, offset)))
return -EFAULT;
ret = do_sendfile(out_fd, in_fd, &pos, count, 0);
if (unlikely(put_user(pos, offset)))
next prev parent reply other threads:[~2004-04-19 10:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-18 0:28 Nasty 2.6 sendfile() bug / regression; affects vsftpd chris
2004-04-18 3:12 ` Linus Torvalds
2004-04-18 13:49 ` chris
2004-04-19 0:46 ` Jamie Lokier
2004-04-19 5:28 ` Linus Torvalds
2004-04-19 9:44 ` [PATCH] Add 64-bit get_user and __get_user for i386 Jamie Lokier
2004-04-19 10:14 ` Jamie Lokier
2004-04-19 10:17 ` Jamie Lokier [this message]
2004-04-19 10:36 ` [PATCH] Use get_user for 64-bit read in sendfile64 Jamie Lokier
2004-04-19 14:56 ` [PATCH] Add 64-bit get_user and __get_user for i386 Linus Torvalds
[not found] ` <20040420020922.GA18348@mail.shareable.org>
[not found] ` <Pine.LNX.4.58.0404191945490.29941@ppc970.osdl.org>
2004-04-20 17:41 ` Jamie Lokier
2004-04-21 1:15 ` Linus Torvalds
2004-04-20 23:21 ` Jim Wilson
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