From aec8283d47d4e4366b6a9096d27299c02e0a8b6d Mon Sep 17 00:00:00 2001 From: Ouyang Changchun Date: Wed, 29 Oct 2014 14:39:38 +0800 Subject: [PATCH] vhost: fix build without unused result It fixes this compilation complain: "error: ignoring return value of 'realpath', declared with attribute warn_unused_result [-Werror=unused-result]" Signed-off-by: Changchun Ouyang Tested-by: Jingguo Fu --- lib/librte_vhost/virtio-net.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c index 27ba175499..8015dd8406 100644 --- a/lib/librte_vhost/virtio-net.c +++ b/lib/librte_vhost/virtio-net.c @@ -133,6 +133,7 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem, char mapfile[PATH_MAX]; char procdir[PATH_MAX]; char resolved_path[PATH_MAX]; + char *path = NULL; FILE *fmap; void *map; uint8_t found = 0; @@ -235,9 +236,11 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem, while (NULL != (dptr = readdir(dp))) { snprintf(memfile, PATH_MAX, "/proc/%u/fd/%s", pid, dptr->d_name); - realpath(memfile, resolved_path); - if (resolved_path == NULL) { - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to resolve fd directory\n", dev->device_fh); + path = realpath(memfile, resolved_path); + if (path == NULL) { + RTE_LOG(ERR, VHOST_CONFIG, + "(%"PRIu64") Failed to resolve fd directory\n", + dev->device_fh); closedir(dp); return -1; } -- 2.20.1