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[PATCH] x86-64: Fix 32bit sendfile

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If we use 64bit kernel on ia64/x86_64/s390 architecture, and we run
32bit binary on 32bit compatibility mode, sendfile system call seems be
not set offset argument.

This is because sendfile's return value is not zero but the code regards
the result by return value is zero or not.

This problem will be affect to ia64/x86_64/s390 and not affect to other
architecture does not affect other architecture (mips/parisc/ppc64/sparc64).

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Tsuneo.Yoshioka@f-secure.com 2005-09-12 18:49:24 +02:00 committed by Linus Torvalds
parent 9acf23c42b
commit 83b942bd34
3 changed files with 3 additions and 3 deletions
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2
arch/ia64/ia32/sys_ia32.c
View File

@ -2327,7 +2327,7 @@ sys32_sendfile (int out_fd, int in_fd, int __user *offset, unsigned int count)
ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *) &of : NULL, count);
set_fs(old_fs);
if (!ret && offset && put_user(of, offset))
if (offset && put_user(of, offset))
return -EFAULT;
return ret;

2
arch/s390/kernel/compat_linux.c
View File

@ -678,7 +678,7 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, size
ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
set_fs(old_fs);
if (!ret && offset && put_user(of, offset))
if (offset && put_user(of, offset))
return -EFAULT;
return ret;

2
arch/x86_64/ia32/sys_ia32.c
View File

@ -751,7 +751,7 @@ sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
set_fs(old_fs);
if (!ret && offset && put_user(of, offset))
if (offset && put_user(of, offset))
return -EFAULT;
return ret;