[IA64] sync compat getdents
Add VERIFY_WRITE check in the beginning like compat_sys_getdents() (EINVAL vs
EFAULT).
Signed-off-by: Alexandr Andreev <aandreev@openvz.org>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index d430d36..0afb4fe 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -1267,6 +1267,10 @@
struct getdents32_callback buf;
int error;
+ error = -EFAULT;
+ if (!access_ok(VERIFY_WRITE, dirent, count))
+ goto out;
+
error = -EBADF;
file = fget(fd);
if (!file)
@@ -1283,10 +1287,10 @@
error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
- error = -EINVAL;
if (put_user(file->f_pos, &lastdirent->d_off))
- goto out_putf;
- error = count - buf.count;
+ error = -EFAULT;
+ else
+ error = count - buf.count;
}
out_putf: