1 /* $OpenBSD: misc.c,v 1.12 2014/05/18 08:10:00 espie Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Cimarron D. Taylor of the University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/types.h> 36 #include <sys/stat.h> 37 #include <sys/uio.h> 38 39 #include <err.h> 40 #include <errno.h> 41 #include <fts.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 #include "find.h" 48 49 /* 50 * brace_subst -- 51 * Replace occurrences of {} in s1 with s2 and return the result string. 52 */ 53 void 54 brace_subst(char *orig, char **store, char *path, int len) 55 { 56 int plen; 57 char ch, *p; 58 59 plen = strlen(path); 60 for (p = *store; (ch = *orig); ++orig) 61 if (ch == '{' && orig[1] == '}') { 62 while ((p - *store) + plen > len) { 63 int newlen = len * 2; 64 char *newstore; 65 66 if (!(newstore = realloc(*store, newlen))) 67 err(1, NULL); 68 *store = newstore; 69 len = newlen; 70 } 71 memmove(p, path, plen); 72 p += plen; 73 ++orig; 74 } else 75 *p++ = ch; 76 *p = '\0'; 77 } 78 79 /* 80 * queryuser -- 81 * print a message to standard error and then read input from standard 82 * input. If the input is 'y' then 1 is returned. 83 */ 84 int 85 queryuser(char **argv) 86 { 87 int ch, first, nl; 88 89 (void)fprintf(stderr, "\"%s", *argv); 90 while (*++argv) 91 (void)fprintf(stderr, " %s", *argv); 92 (void)fprintf(stderr, "\"? "); 93 (void)fflush(stderr); 94 95 first = ch = getchar(); 96 for (nl = 0;;) { 97 if (ch == '\n') { 98 nl = 1; 99 break; 100 } 101 if (ch == EOF) 102 break; 103 ch = getchar(); 104 } 105 106 if (!nl) { 107 (void)fprintf(stderr, "\n"); 108 (void)fflush(stderr); 109 } 110 return (first == 'y'); 111 } 112 113 /* 114 * emalloc -- 115 * malloc with error checking. 116 */ 117 void * 118 emalloc(size_t len) 119 { 120 void *p; 121 122 if ((p = malloc(len))) 123 return (p); 124 err(1, NULL); 125 } 126 127 void * 128 ereallocarray(void *oldp, size_t sz1, size_t sz2) 129 { 130 void *p; 131 132 if ((p = reallocarray(oldp, sz1, sz2)) != NULL) 133 return (p); 134 err(1, NULL); 135 } 136 137 /* 138 * show_path -- 139 * called on SIGINFO 140 */ 141 /* ARGSUSED */ 142 void 143 show_path(int signo) 144 { 145 int save_errno = errno; 146 extern FTSENT *entry; 147 struct iovec iov[3]; 148 149 if (entry != NULL) { 150 iov[0].iov_base = "find path: "; 151 iov[0].iov_len = strlen(iov[0].iov_base); 152 iov[1].iov_base = entry->fts_path; 153 iov[1].iov_len = entry->fts_pathlen; 154 iov[2].iov_base = "\n"; 155 iov[2].iov_len = strlen(iov[2].iov_base); 156 writev(STDERR_FILENO, iov, 3); 157 errno = save_errno; 158 } 159 } 160