usr/src/cmd/nscd/getgr.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 /*
  29  * Routines to handle getgr* calls in nscd
  30  */
  31
  32 #include <stdlib.h>
  33 #include "cache.h"
  34
  35 #define nam_db  ctx->nsc_db[0]
  36 #define gid_db  ctx->nsc_db[1]
  37
  38 #define NSC_NAME_GROUP_BYNAME   "getgrnam"
  39 #define NSC_NAME_GROUP_BYGID    "getgrgid"
  40
  41 static void grgid_getlogstr(char *, char *, size_t, nss_XbyY_args_t *);
  42 static int grgid_compar(const void *, const void *);
  43 static uint_t grgid_gethash(nss_XbyY_key_t *, int);
  44
  45 void
  46 group_init_ctx(nsc_ctx_t *ctx) {
  47         ctx->dbname = NSS_DBNAM_GROUP;
  48         ctx->file_name = "/etc/group";
  49         ctx->db_count = 2;
  50         nam_db = make_cache(nsc_key_ces,
  51                         NSS_DBOP_GROUP_BYNAME,
  52                         NSC_NAME_GROUP_BYNAME,
  53                         NULL, NULL, NULL, nsc_ht_default, -1);
  54         gid_db = make_cache(nsc_key_other,
  55                         NSS_DBOP_GROUP_BYGID,
  56                         NSC_NAME_GROUP_BYGID,
  57                         grgid_compar,
  58                         grgid_getlogstr,
  59                         grgid_gethash, nsc_ht_default, -1);
  60 }
  61
  62 static void
  63 grgid_getlogstr(char *name, char *whoami, size_t len, nss_XbyY_args_t *argp) {
  64         (void) snprintf(whoami, len, "%s [key=%d]", name, argp->key.gid);
  65 }
  66
  67 static int
  68 grgid_compar(const void *n1, const void *n2) {
  69         nsc_entry_t     *e1, *e2;
  70
  71         e1 = (nsc_entry_t *)n1;
  72         e2 = (nsc_entry_t *)n2;
  73         return (_NSC_INT_KEY_CMP(e1->key.gid, e2->key.gid));
  74 }
  75
  76 static uint_t
  77 grgid_gethash(nss_XbyY_key_t *key, int htsize) {
  78         return ((uint_t)key->gid % htsize);
  79 }