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 2005 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 #include "libuutil_common.h"
30
31 #include <libintl.h>
32 #include <limits.h>
33 #include <string.h>
34 #include <stdlib.h>
35 #include <stdarg.h>
36 #include <stdio.h>
37 #include <errno.h>
38 #include <wchar.h>
39 #include <unistd.h>
40
41 static const char PNAME_FMT[] = "%s: ";
42 static const char ERRNO_FMT[] = ": %s\n";
43
44 static const char *pname;
45
46 static void
47 uu_die_internal(int status, const char *format, va_list alist) __NORETURN;
48
49 int uu_exit_ok_value = EXIT_SUCCESS;
50 int uu_exit_fatal_value = EXIT_FAILURE;
51 int uu_exit_usage_value = 2;
52
53 int *
uu_exit_ok(void)54 uu_exit_ok(void)
55 {
56 return (&uu_exit_ok_value);
57 }
58
59 int *
uu_exit_fatal(void)60 uu_exit_fatal(void)
61 {
62 return (&uu_exit_fatal_value);
63 }
64
65 int *
uu_exit_usage(void)66 uu_exit_usage(void)
67 {
68 return (&uu_exit_usage_value);
69 }
70
71 void
uu_alt_exit(int profile)72 uu_alt_exit(int profile)
73 {
74 switch (profile) {
75 case UU_PROFILE_DEFAULT:
76 uu_exit_ok_value = EXIT_SUCCESS;
77 uu_exit_fatal_value = EXIT_FAILURE;
78 uu_exit_usage_value = 2;
79 break;
80 case UU_PROFILE_LAUNCHER:
81 uu_exit_ok_value = EXIT_SUCCESS;
82 uu_exit_fatal_value = 124;
83 uu_exit_usage_value = 125;
84 break;
85 }
86 }
87
88 static void
uu_warn_internal(int err,const char * format,va_list alist)89 uu_warn_internal(int err, const char *format, va_list alist)
90 {
91 if (pname != NULL)
92 (void) fprintf(stderr, PNAME_FMT, pname);
93
94 (void) vfprintf(stderr, format, alist);
95
96 if (strrchr(format, '\n') == NULL)
97 (void) fprintf(stderr, ERRNO_FMT, strerror(err));
98 }
99
100 void
uu_vwarn(const char * format,va_list alist)101 uu_vwarn(const char *format, va_list alist)
102 {
103 uu_warn_internal(errno, format, alist);
104 }
105
106 /*PRINTFLIKE1*/
107 void
uu_warn(const char * format,...)108 uu_warn(const char *format, ...)
109 {
110 va_list alist;
111 va_start(alist, format);
112 uu_warn_internal(errno, format, alist);
113 va_end(alist);
114 }
115
116 static void
uu_die_internal(int status,const char * format,va_list alist)117 uu_die_internal(int status, const char *format, va_list alist)
118 {
119 uu_warn_internal(errno, format, alist);
120 #ifdef DEBUG
121 {
122 char *cp;
123
124 if (!issetugid()) {
125 cp = getenv("UU_DIE_ABORTS");
126 if (cp != NULL && *cp != '\0')
127 abort();
128 }
129 }
130 #endif
131 exit(status);
132 }
133
134 void
uu_vdie(const char * format,va_list alist)135 uu_vdie(const char *format, va_list alist)
136 {
137 uu_die_internal(UU_EXIT_FATAL, format, alist);
138 }
139
140 /*PRINTFLIKE1*/
141 void
uu_die(const char * format,...)142 uu_die(const char *format, ...)
143 {
144 va_list alist;
145 va_start(alist, format);
146 uu_die_internal(UU_EXIT_FATAL, format, alist);
147 va_end(alist);
148 }
149
150 void
uu_vxdie(int status,const char * format,va_list alist)151 uu_vxdie(int status, const char *format, va_list alist)
152 {
153 uu_die_internal(status, format, alist);
154 }
155
156 /*PRINTFLIKE2*/
157 void
uu_xdie(int status,const char * format,...)158 uu_xdie(int status, const char *format, ...)
159 {
160 va_list alist;
161 va_start(alist, format);
162 uu_die_internal(status, format, alist);
163 va_end(alist);
164 }
165
166 const char *
uu_setpname(char * arg0)167 uu_setpname(char *arg0)
168 {
169 /*
170 * Having a NULL argv[0], while uncommon, is possible. It
171 * makes more sense to handle this event in uu_setpname rather
172 * than in each of its consumers.
173 */
174 if (arg0 == NULL) {
175 pname = getexecname();
176 if (pname == NULL)
177 pname = "unknown_command";
178 return (pname);
179 }
180
181 /*
182 * Guard against '/' at end of command invocation.
183 */
184 for (;;) {
185 char *p = strrchr(arg0, '/');
186 if (p == NULL) {
187 pname = arg0;
188 break;
189 } else {
190 if (*(p + 1) == '\0') {
191 *p = '\0';
192 continue;
193 }
194
195 pname = p + 1;
196 break;
197 }
198 }
199
200 return (pname);
201 }
202
203 const char *
uu_getpname(void)204 uu_getpname(void)
205 {
206 return (pname);
207 }
208