2.6.32-longterm review patch. If anyone has any objections, please let me know.
------------------
From: Al Viro <v...@zeniv.linux.org.uk>
commit 0e665d5d1125f9f4ccff56a75e814f10f88861a2 upstream.
compat_sys_{read,write}v() need the same "pass a copy of file->f_pos" thing
as sys_{read,write}{,v}().
Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w...@1wt.eu>
---
fs/compat.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/fs/compat.c b/fs/compat.c
index d1e2411..46b93d1 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1208,11 +1208,14 @@ compat_sys_readv(unsigned long fd, const struct
compat_iovec __user *vec,
struct file *file;
int fput_needed;
ssize_t ret;
+ loff_t pos;
file = fget_light(fd, &fput_needed);
if (!file)
return -EBADF;
- ret = compat_readv(file, vec, vlen, &file->f_pos);
+ pos = file->f_pos;
+ ret = compat_readv(file, vec, vlen, &pos);
+ file->f_pos = pos;
fput_light(file, fput_needed);
return ret;
}
@@ -1265,11 +1268,14 @@ compat_sys_writev(unsigned long fd, const struct
compat_iovec __user *vec,
struct file *file;
int fput_needed;
ssize_t ret;
+ loff_t pos;
file = fget_light(fd, &fput_needed);
if (!file)
return -EBADF;
- ret = compat_writev(file, vec, vlen, &file->f_pos);
+ pos = file->f_pos;
+ ret = compat_writev(file, vec, vlen, &pos);
+ file->f_pos = pos;
fput_light(file, fput_needed);
return ret;
}
--
1.7.2.1.45.g54fbc
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