summaryrefslogtreecommitdiff
path: root/libpwdgrp/initgroups.c
diff options
context:
space:
mode:
Diffstat (limited to 'libpwdgrp/initgroups.c')
-rw-r--r--libpwdgrp/initgroups.c115
1 files changed, 0 insertions, 115 deletions
diff --git a/libpwdgrp/initgroups.c b/libpwdgrp/initgroups.c
deleted file mode 100644
index 6577ec6..0000000
--- a/libpwdgrp/initgroups.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * 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 "busybox.h"
-
-#include <unistd.h>
-#include <string.h>
-#include <fcntl.h>
-#include "grp_.h"
-
-/*
- * Define GR_SCALE_DYNAMIC if you want grp to dynamically scale its read buffer
- * so that lines of any length can be used. On very very small systems,
- * you may want to leave this undefined because it will make the grp functions
- * somewhat larger (because of the inclusion of malloc and the code necessary).
- * On larger systems, you will want to define this, because grp will _not_
- * deal with long lines gracefully (they will be skipped).
- */
-#undef GR_SCALE_DYNAMIC
-
-#ifndef GR_SCALE_DYNAMIC
-/*
- * If scaling is not dynamic, the buffers will be statically allocated, and
- * maximums must be chosen. GR_MAX_LINE_LEN is the maximum number of
- * characters per line in the group file. GR_MAX_MEMBERS is the maximum
- * number of members of any given group.
- */
-#define GR_MAX_LINE_LEN 128
-/* GR_MAX_MEMBERS = (GR_MAX_LINE_LEN-(24+3+6))/9 */
-#define GR_MAX_MEMBERS 11
-
-#endif /* !GR_SCALE_DYNAMIC */
-
-
-/*
- * Define GR_DYNAMIC_GROUP_LIST to make initgroups() dynamically allocate
- * space for it's GID array before calling setgroups(). This is probably
- * unnecessary scalage, so it's undefined by default.
- */
-#undef GR_DYNAMIC_GROUP_LIST
-
-#ifndef GR_DYNAMIC_GROUP_LIST
-/*
- * GR_MAX_GROUPS is the size of the static array initgroups() uses for
- * its static GID array if GR_DYNAMIC_GROUP_LIST isn't defined.
- */
-#define GR_MAX_GROUPS 64
-
-#endif /* !GR_DYNAMIC_GROUP_LIST */
-
-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(bb_path_group_file, 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 = bb_getgrent(grp_fd)) != NULL)
-#else
- while ((group = bb_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-1] = group->gr_gid;
- }
- tmp_mem++;
- }
- }
- }
- close(grp_fd);
- return setgroups(num_groups, group_list);
-}