Author: markj
Date: Thu Jun 9 01:11:48 2016
New Revision: 301710
URL: https://svnweb.freebsd.org/changeset/base/301710
Log:
Fix an infinite loop in setnetgrent(3) with NIS netgroups.
Handle an empty result from yp_match() by returning NULL, which is
consistent with the handling of an empty netgroup in /etc/netgroup.
setnetgrent(3) has no return value, so there is no particular need to
distinguish this case from an error.
PR: 26486
MFC after: 2 weeks
Modified:
head/lib/libc/gen/getnetgrent.c
Modified: head/lib/libc/gen/getnetgrent.c
==============================================================================
--- head/lib/libc/gen/getnetgrent.c Thu Jun 9 01:05:23 2016
(r301709)
+++ head/lib/libc/gen/getnetgrent.c Thu Jun 9 01:11:48 2016
(r301710)
@@ -558,6 +558,10 @@ read_for_group(const char *group)
continue;
}
}
+ if (strlen(result) == 0) {
+ free(result);
+ return (NULL);
+ }
snprintf(line, LINSIZ, "%s %s", group, result);
free(result);
}
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