1 files changed, 74 insertions, 0 deletions
diff --git a/release/src/router/busybox/pwd_grp/initgroups.c b/release/src/router/busybox/pwd_grp/initgroups.c
new file mode 100644
index 00000000..b25b1efe
--- /dev/null
+++ b/release/src/router/busybox/pwd_grp/initgroups.c
@@ -0,0 +1,74 @@
+/*
+ * initgroups.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include "grp.h"
+#include "config.h"
+
+int initgroups(__const char *user, gid_t gid)
+{
+	register struct group *group;
+
+#ifndef GR_DYNAMIC_GROUP_LIST
+	gid_t group_list[GR_MAX_GROUPS];
+#else
+	gid_t *group_list = NULL;
+#endif
+	register char **tmp_mem;
+	int num_groups;
+	int grp_fd;
+
+
+	if ((grp_fd = open("/etc/group", O_RDONLY)) < 0)
+		return -1;
+
+	num_groups = 0;
+#ifdef GR_DYNAMIC_GROUP_LIST
+	group_list = (gid_t *) realloc(group_list, 1);
+#endif
+	group_list[num_groups] = gid;
+#ifndef GR_DYNAMIC_GROUP_LIST
+	while (num_groups < GR_MAX_GROUPS &&
+		   (group = __getgrent(grp_fd)) != NULL)
+#else
+	while ((group = __getgrent(grp_fd)) != NULL)
+#endif
+	{
+		if (group->gr_gid != gid);
+		{
+			tmp_mem = group->gr_mem;
+			while (*tmp_mem != NULL) {
+				if (!strcmp(*tmp_mem, user)) {
+					num_groups++;
+#ifdef GR_DYNAMIC_GROUP_LIST
+					group_list = (gid_t *) realloc(group_list, num_groups *
+						sizeof(gid_t *));
+#endif
+					group_list[num_groups] = group->gr_gid;
+				}
+				tmp_mem++;
+			}
+		}
+	}
+	close(grp_fd);
+	return setgroups(num_groups, group_list);
+}