1 /* 4.4BSD utility functions for error messages.
2 Copyright (C) 1995-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <stdarg.h>
20 #include <err.h>
21 #include <stdlib.h>
22 #include <errno.h>
23 #include <string.h>
24 #include <stdio.h>
25
26 #include <wchar.h>
27 #define flockfile(s) _IO_flockfile (s)
28 #define funlockfile(s) _IO_funlockfile (s)
29
30 extern char *__progname;
31
32 #define VA(call) \
33 { \
34 va_list ap; \
35 va_start (ap, format); \
36 call; \
37 va_end (ap); \
38 }
39
40 void
__vwarnx_internal(const char * format,__gnuc_va_list ap,unsigned int mode_flags)41 __vwarnx_internal (const char *format, __gnuc_va_list ap,
42 unsigned int mode_flags)
43 {
44 flockfile (stderr);
45 __fxprintf (stderr, "%s: ", __progname);
46 if (format != NULL)
47 __vfxprintf (stderr, format, ap, mode_flags);
48 __fxprintf (stderr, "\n");
49 funlockfile (stderr);
50 }
51
52 void
__vwarn_internal(const char * format,__gnuc_va_list ap,unsigned int mode_flags)53 __vwarn_internal (const char *format, __gnuc_va_list ap,
54 unsigned int mode_flags)
55 {
56 int error = errno;
57
58 flockfile (stderr);
59 if (format != NULL)
60 {
61 __fxprintf (stderr, "%s: ", __progname);
62 __vfxprintf (stderr, format, ap, mode_flags);
63 __set_errno (error);
64 __fxprintf (stderr, ": %m\n");
65 }
66 else
67 {
68 __set_errno (error);
69 __fxprintf (stderr, "%s: %m\n", __progname);
70 }
71 funlockfile (stderr);
72 }
73
74 void
vwarn(const char * format,__gnuc_va_list ap)75 vwarn (const char *format, __gnuc_va_list ap)
76 {
77 __vwarn_internal (format, ap, 0);
78 }
libc_hidden_def(vwarn)79 libc_hidden_def (vwarn)
80
81 void
82 vwarnx (const char *format, __gnuc_va_list ap)
83 {
84 __vwarnx_internal (format, ap, 0);
85 }
libc_hidden_def(vwarnx)86 libc_hidden_def (vwarnx)
87
88 void
89 warn (const char *format, ...)
90 {
91 VA (vwarn (format, ap))
92 }
libc_hidden_def(warn)93 libc_hidden_def (warn)
94
95 void
96 warnx (const char *format, ...)
97 {
98 VA (vwarnx (format, ap))
99 }
libc_hidden_def(warnx)100 libc_hidden_def (warnx)
101
102 void
103 verr (int status, const char *format, __gnuc_va_list ap)
104 {
105 vwarn (format, ap);
106 exit (status);
107 }
libc_hidden_def(verr)108 libc_hidden_def (verr)
109
110 void
111 verrx (int status, const char *format, __gnuc_va_list ap)
112 {
113 vwarnx (format, ap);
114 exit (status);
115 }
libc_hidden_def(verrx)116 libc_hidden_def (verrx)
117
118 void
119 err (int status, const char *format, ...)
120 {
121 VA (verr (status, format, ap))
122 }
123
124 void
errx(int status,const char * format,...)125 errx (int status, const char *format, ...)
126 {
127 VA (verrx (status, format, ap))
128 }
129