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nodeinfo: Check for SYSFS_INFINIBAND_DIR before open

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Commit id 'ac3ed2085' causes 'virsh nodedev-list --cap net' to fail
on any system without SYSFS_INFINIBAND_DIR (/sys/class/infiniband).

Rather than assume it's there and fail on the attempt to open the
non-existent directory, check if it's there - if not, return
success and move on. Also fix caller to check < 0 upon return.

As reported by Suren Hajyan <shajyan@redhat.com> from run of unit tests
This commit is contained in:
John Ferlan 2015-07-23 14:33:32 -04:00
parent c1c5eb6fad
commit 136f17efd1
1 changed files with 4 additions and 1 deletions
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5
src/util/virnetdev.c
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@ -2976,6 +2976,9 @@ virNetDevRDMAFeature(const char *ifname,
struct dirent *dp;
int ret = -1;
if (!virFileExists(SYSFS_INFINIBAND_DIR))
return 0;
if (!(dirp = opendir(SYSFS_INFINIBAND_DIR))) {
virReportSystemError(errno,
_("Failed to opendir path '%s'"),
@ -3191,7 +3194,7 @@ virNetDevGetFeatures(const char *ifname,
ignore_value(virBitmapSetBit(*out, VIR_NET_DEV_FEAT_TXUDPTNL));
# endif
if (virNetDevRDMAFeature(ifname, out))
if (virNetDevRDMAFeature(ifname, out) < 0)
return -1;
return 0;
}