usr/src/cmd/dumpadm/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 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/param.h>
  30 #include <libintl.h>
  31 #include <string.h>
  32 #include <stdlib.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <errno.h>
  36
  37 #include "utils.h"
  38
  39 static const char PNAME_FMT[] = "%s: ";
  40 static const char ERRNO_FMT[] = ": %s\n";
  41
  42 static const char *pname;
  43
  44 /*PRINTFLIKE1*/
  45 void
  46 warn(const char *format, ...)
  47 {
  48         int err = errno;
  49         va_list alist;
  50
  51         if (pname != NULL)
  52                 (void) fprintf(stderr, gettext(PNAME_FMT), pname);
  53
  54         va_start(alist, format);
  55         (void) vfprintf(stderr, format, alist);
  56         va_end(alist);
  57
  58         if (strchr(format, '\n') == NULL)
  59                 (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err));
  60 }
  61
  62 /*PRINTFLIKE1*/
  63 void
  64 die(const char *format, ...)
  65 {
  66         int err = errno;
  67         va_list alist;
  68
  69         if (pname != NULL)
  70                 (void) fprintf(stderr, gettext(PNAME_FMT), pname);
  71
  72         va_start(alist, format);
  73         (void) vfprintf(stderr, format, alist);
  74         va_end(alist);
  75
  76         if (strchr(format, '\n') == NULL)
  77                 (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err));
  78
  79         exit(E_ERROR);
  80 }
  81
  82 const char *
  83 getpname(const char *arg0)
  84 {
  85         const char *p = strrchr(arg0, '/');
  86
  87         if (p == NULL)
  88                 p = arg0;
  89         else
  90                 p++;
  91
  92         pname = p;
  93         return (p);
  94 }
  95
  96 int
  97 valid_abspath(const char *p)
  98 {
  99         if (p[0] != '/') {
 100                 warn(gettext("pathname is not an absolute path -- %s\n"), p);
 101                 return (0);
 102         }
 103
 104         if (strlen(p) > MAXPATHLEN) {
 105                 warn(gettext("pathname is too long -- %s\n"), p);
 106                 return (0);
 107         }
 108
 109         return (1);
 110 }
 111
 112 int
 113 valid_str2int(const char *p, int *ip)
 114 {
 115         int i;
 116         char *q;
 117
 118         errno = 0;
 119         i = (int)strtol(p, &q, 10);
 120
 121         if (errno != 0 || q == p || i < 0 || (*q != '\0' && *q != '\n'))
 122                 return (0);
 123
 124         *ip = i;
 125         return (1);
 126 }
 127
 128 int
 129 valid_str2ull(const char *p, unsigned long long *ullp)
 130 {
 131         long long ll;
 132         char *q;
 133
 134         errno = 0;
 135         ll = strtoll(p, &q, 10);
 136
 137         if (errno != 0 || q == p || ll < 0LL || (*q != '\0' && *q != '\n'))
 138                 return (0);
 139
 140         *ullp = (unsigned long long)ll;
 141         return (1);
 142 }