[dpdk-dev] [PATCH v3 12/40] drivers/net/vdev: readlink inputs cannot be aliased

[Andy Green]

/home/agreen/projects/dpdk/drivers/net/vdev_netvsc/
vdev_netvsc.c:335:2:error: passing argument 2 to restrict-
qualified parameter aliases with argument 1 [-Werror=restrict]
  ret = readlink(buf, buf, size);
  ^~~

Signed-off-by: Andy Green <a...@warmcat.com>
---
 drivers/net/vdev_netvsc/vdev_netvsc.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/vdev_netvsc/vdev_netvsc.c 
b/drivers/net/vdev_netvsc/vdev_netvsc.c
index c321a9f1b..dca25761d 100644
--- a/drivers/net/vdev_netvsc/vdev_netvsc.c
+++ b/drivers/net/vdev_netvsc/vdev_netvsc.c
@@ -327,12 +327,14 @@ static int
 vdev_netvsc_sysfs_readlink(char *buf, size_t size, const char *if_name,
                           const char *relpath)
 {
+       char in[160];
        int ret;
 
-       ret = snprintf(buf, size, "/sys/class/net/%s/%s", if_name, relpath);
-       if (ret == -1 || (size_t)ret >= size)
+       ret = snprintf(in, sizeof(in) - 1, "/sys/class/net/%s/%s",
+                      if_name, relpath);
+       if (ret == -1 || (size_t)ret >= sizeof(in) - 1)
                return -ENOBUFS;
-       ret = readlink(buf, buf, size);
+       ret = readlink(in, buf, size);
        if (ret == -1)
                return -errno;
        if ((size_t)ret >= size - 1)