return -EFAULT instead of the value returned by copy_from_user()
Signed-off-by: Vitaly Osipov <vitaly.osi...@gmail.com>
---
Revised against today's staging-next branch.
.../lustre/lustre/libcfs/linux/linux-module.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
b/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
index 9a3b07b..581b472 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
@@ -45,14 +45,12 @@ int libcfs_ioctl_getdata(char *buf, char *end, void *arg)
struct libcfs_ioctl_hdr *hdr;
struct libcfs_ioctl_data *data;
int orig_len;
- int err;
hdr = (struct libcfs_ioctl_hdr *)buf;
data = (struct libcfs_ioctl_data *)buf;
- err = copy_from_user(buf, (void *)arg, sizeof(*hdr));
- if (err)
- return err;
+ if (copy_from_user(buf, (void *)arg, sizeof(*hdr)))
+ return -EFAULT;
if (hdr->ioc_version != LIBCFS_IOCTL_VERSION) {
CERROR("PORTALS: version mismatch kernel vs application\n");
@@ -71,9 +69,8 @@ int libcfs_ioctl_getdata(char *buf, char *end, void *arg)
}
orig_len = hdr->ioc_len;
- err = copy_from_user(buf, (void *)arg, hdr->ioc_len);
- if (err)
- return err;
+ if (copy_from_user(buf, (void *)arg, hdr->ioc_len))
+ return -EFAULT;
if (orig_len != data->ioc_len)
return -EINVAL;
--
1.7.9.5
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