1 /* 2 * Copyright (c) 2017 Nicholas Marriott <nicholas.marriott@gmail.com> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 14 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <sys/types.h> 18 19 #include <errno.h> 20 #include <stdarg.h> 21 #include <stdlib.h> 22 #include <stdio.h> 23 #include <string.h> 24 25 #include "compat.h" 26 27 void 28 err(int eval, const char *fmt, ...) 29 { 30 va_list ap; 31 int saved_errno = errno; 32 33 fprintf(stderr, "%s: ", getprogname()); 34 35 va_start(ap, fmt); 36 if (fmt != NULL) { 37 vfprintf(stderr, fmt, ap); 38 fprintf(stderr, ": "); 39 } 40 va_end(ap); 41 42 fprintf(stderr, "%s\n", strerror(saved_errno)); 43 exit(eval); 44 } 45 46 void 47 errx(int eval, const char *fmt, ...) 48 { 49 va_list ap; 50 51 fprintf(stderr, "%s: ", getprogname()); 52 53 va_start(ap, fmt); 54 if (fmt != NULL) 55 vfprintf(stderr, fmt, ap); 56 va_end(ap); 57 58 putc('\n', stderr); 59 exit(eval); 60 } 61 62 void 63 warn(const char *fmt, ...) 64 { 65 va_list ap; 66 int saved_errno = errno; 67 68 fprintf(stderr, "%s: ", getprogname()); 69 70 va_start(ap, fmt); 71 if (fmt != NULL) { 72 vfprintf(stderr, fmt, ap); 73 fprintf(stderr, ": "); 74 } 75 va_end(ap); 76 77 fprintf(stderr, "%s\n", strerror(saved_errno)); 78 } 79 80 void 81 warnx(const char *fmt, ...) 82 { 83 va_list ap; 84 85 fprintf(stderr, "%s: ", getprogname()); 86 87 va_start(ap, fmt); 88 if (fmt != NULL) 89 vfprintf(stderr, fmt, ap); 90 va_end(ap); 91 92 putc('\n', stderr); 93 } 94