usr/src/cmd/fm/fminject/common/inj_err.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 2004 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  * Error-handling routines
  31  */
  32
  33 #include <string.h>
  34 #include <stdlib.h>
  35 #include <stdarg.h>
  36 #include <stdio.h>
  37 #include <errno.h>
  38
  39 #include <inj_err.h>
  40
  41 /*LINTLIBRARY*/
  42
  43 static const char *pname;
  44
  45 #pragma init(getpname)
  46 const char *
  47 getpname(void)
  48 {
  49         const char *p, *q;
  50
  51         if (pname != NULL)
  52                 return (pname);
  53
  54         if ((p = getexecname()) != NULL)
  55                 q = strrchr(p, '/');
  56         else
  57                 q = NULL;
  58
  59         if (q == NULL)
  60                 pname = p;
  61         else
  62                 pname = q + 1;
  63
  64         return (pname);
  65 }
  66
  67 void
  68 vwarn(const char *format, va_list alist)
  69 {
  70         int err = errno;
  71
  72         if (pname != NULL)
  73                 (void) fprintf(stderr, "%s: ", pname);
  74
  75         (void) vfprintf(stderr, format, alist);
  76
  77         if (strchr(format, '\n') == NULL)
  78                 (void) fprintf(stderr, ": %s\n", strerror(err));
  79 }
  80
  81 /*PRINTFLIKE1*/
  82 void
  83 warn(const char *format, ...)
  84 {
  85         va_list alist;
  86
  87         va_start(alist, format);
  88         vwarn(format, alist);
  89         va_end(alist);
  90 }
  91
  92 void
  93 vdie(const char *format, va_list alist)
  94 {
  95         vwarn(format, alist);
  96         exit(E_ERROR);
  97 }
  98
  99 /*PRINTFLIKE1*/
 100 void
 101 die(const char *format, ...)
 102 {
 103         va_list alist;
 104
 105         va_start(alist, format);
 106         vdie(format, alist);
 107         va_end(alist);
 108 }
 109
 110 int
 111 inj_set_errno(int err)
 112 {
 113         errno = err;
 114         return (-1);
 115 }