usr/src/tools/ctf/common/utils.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 (c) 1998-2001 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <stdarg.h>
  32 #include <stdio.h>
  33 #include <errno.h>
  34
  35 #include "utils.h"
  36
  37 /*LINTLIBRARY*/
  38
  39 static const char *pname;
  40
  41 #pragma init(getpname)
  42 const char *
  43 getpname(void)
  44 {
  45         const char *p, *q;
  46
  47         if (pname != NULL)
  48                 return (pname);
  49
  50         if ((p = getexecname()) != NULL)
  51                 q = strrchr(p, '/');
  52         else
  53                 q = NULL;
  54
  55         if (q == NULL)
  56                 pname = p;
  57         else
  58                 pname = q + 1;
  59
  60         return (pname);
  61 }
  62
  63 void
  64 vwarn(const char *format, va_list alist)
  65 {
  66         int err = errno;
  67
  68         if (pname != NULL)
  69                 (void) fprintf(stderr, "%s: ", pname);
  70
  71         (void) vfprintf(stderr, format, alist);
  72
  73         if (strchr(format, '\n') == NULL)
  74                 (void) fprintf(stderr, ": %s\n", strerror(err));
  75 }
  76
  77 /*PRINTFLIKE1*/
  78 void
  79 warn(const char *format, ...)
  80 {
  81         va_list alist;
  82
  83         va_start(alist, format);
  84         vwarn(format, alist);
  85         va_end(alist);
  86 }
  87
  88 void
  89 vdie(const char *format, va_list alist)
  90 {
  91         vwarn(format, alist);
  92         exit(E_ERROR);
  93 }
  94
  95 /*PRINTFLIKE1*/
  96 void
  97 die(const char *format, ...)
  98 {
  99         va_list alist;
 100
 101         va_start(alist, format);
 102         vdie(format, alist);
 103         va_end(alist);
 104 }