1 files changed, 68 insertions, 0 deletions
diff --git a/lib/libc/gen/initgroups.c b/lib/libc/gen/initgroups.c
new file mode 100644
index 0000000..aacaf7e
--- /dev/null
+++ b/lib/libc/gen/initgroups.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)initgroups.c	8.1 (Berkeley) 6/4/93";
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#include "namespace.h"
+#include <err.h>
+#include "un-namespace.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+initgroups(uname, agroup)
+	const char *uname;
+	gid_t agroup;
+{
+	int ngroups, ret;
+	long ngroups_max;
+	gid_t *groups;
+
+	/*
+	 * Provide space for one group more than possible to allow
+	 * setgroups to fail and set errno.
+	 */
+	ngroups_max = sysconf(_SC_NGROUPS_MAX) + 2;
+	if ((groups = malloc(sizeof(*groups) * ngroups_max)) == NULL)
+		return (ENOMEM);
+
+	ngroups = (int)ngroups_max;
+	getgrouplist(uname, agroup, groups, &ngroups);
+	ret = setgroups(ngroups, groups);
+	free(groups);
+	return (ret);
+}