usr/src/common/mdesc/mdesc_findname.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29
  30 #include <sys/types.h>
  31
  32 #ifdef _KERNEL
  33 #include <sys/systm.h>
  34 #else
  35 #include <strings.h>
  36 #endif
  37
  38 #include <sys/mdesc.h>
  39 #include <sys/mdesc_impl.h>
  40
  41 mde_str_cookie_t
  42 md_find_name(md_t *ptr, char *namep)
  43 {
  44         int idx, len;
  45         md_impl_t *mdp;
  46
  47         mdp = (md_impl_t *)ptr;
  48
  49         /*
  50          * At some point init should build a local hash table to
  51          * speed these name searches ... for now use brute force
  52          * because the machien descriptions are so small anyway.
  53          */
  54
  55         for (idx = 0; idx < mdp->name_blk_size; idx += len) {
  56                 char *p;
  57
  58                 p = &(mdp->namep[idx]);
  59
  60                 len = strlen(p)+1;
  61
  62                 if (strcmp(p, namep) == 0)
  63                         return ((mde_str_cookie_t)idx);
  64         }
  65
  66         return (MDE_INVAL_STR_COOKIE);
  67 }