usr/src/cmd/acct/lib/namtouid.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 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25 /*
  26  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.7   */
  30 /*
  31  *      namtouid converts login names to uids
  32  *      maintains ulist for speed only
  33  */
  34 #include <stdio.h>
  35 #include <sys/types.h>
  36 #include "acctdef.h"
  37 #include <pwd.h>
  38 static int      usize;
  39 static struct ulist {
  40         char    uname[NSZ];
  41         uid_t   uuid;
  42 } ul[A_USIZE];
  43 char    ntmp[NSZ+1];
  44
  45 char    *strncpy();
  46
  47 uid_t
  48 namtouid(name)
  49 char    name[NSZ];
  50 {
  51         register struct ulist *up;
  52         register uid_t tuid;
  53         struct passwd *getpwnam(), *pp;
  54
  55         for (up = ul; up < &ul[usize]; up++)
  56                 if (strncmp(name, up->uname, NSZ) == 0)
  57                         return(up->uuid);
  58         strncpy(ntmp, name, NSZ);
  59         (void) setpwent();
  60         if ((pp = getpwnam(ntmp)) == NULL)
  61                 tuid = -1;
  62         else {
  63                 tuid = pp->pw_uid;
  64                 if (usize < A_USIZE) {
  65                         CPYN(up->uname, name);
  66                         up->uuid = tuid;
  67                         usize++;
  68                 }
  69         }
  70         return(tuid);
  71 }