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vhost: fix build without unused result

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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 <changchun.ouyang@intel.com>
Tested-by: Jingguo Fu <jingguox.fu@intel.com>
This commit is contained in:
Ouyang Changchun 2014-10-29 14:39:38 +08:00 committed by Thomas Monjalon
parent fc52326f94
commit aec8283d47
1 changed files with 6 additions and 3 deletions
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9
lib/librte_vhost/virtio-net.c
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@ -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;
}