usr/src/lib/libc/port/gen/perror.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 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1988 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include "lint.h"
  33 #include "_libc_gettext.h"
  34
  35 #include <sys/types.h>
  36 #include <errno.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40
  41 extern int _sys_num_err;
  42 extern const char _sys_errs[];
  43 extern const int _sys_index[];
  44
  45 /*
  46  * Print the error indicated
  47  * in the cerror cell.
  48  */
  49 void
  50 perror(const char *s)
  51 {
  52         const char *c;
  53         int err = errno;
  54
  55         if (err < _sys_num_err && err >= 0)
  56                 c = _libc_gettext(&_sys_errs[_sys_index[err]]);
  57         else
  58                 c = _libc_gettext("Unknown error");
  59
  60         if (s && *s) {
  61                 (void) write(2, s, strlen(s));
  62                 (void) write(2, ": ", 2);
  63         }
  64         (void) write(2, c, strlen(c));
  65         (void) write(2, "\n", 1);
  66 }