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-rw-r--r--lib/libc/gen/initgroups.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/libc/gen/initgroups.c b/lib/libc/gen/initgroups.c
index 3a3f513..82bbb3a 100644
--- a/lib/libc/gen/initgroups.c
+++ b/lib/libc/gen/initgroups.c
@@ -50,9 +50,14 @@ initgroups(uname, agroup)
const char *uname;
gid_t agroup;
{
- int groups[NGROUPS], ngroups;
+ int ngroups;
+ /*
+ * Provide space for one group more than NGROUPS to allow
+ * setgroups to fail and set errno.
+ */
+ gid_t groups[NGROUPS + 1];
- ngroups = NGROUPS;
+ ngroups = NGROUPS + 1;
getgrouplist(uname, agroup, groups, &ngroups);
return (setgroups(ngroups, groups));
}
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