1 /* $OpenBSD: misc.c,v 1.10 2003/09/26 22:22:26 tedu 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 #ifndef lint 36 /*static char sccsid[] = "from: @(#)misc.c 8.1 (Berkeley) 6/6/93";*/ 37 static char rcsid[] = "$OpenBSD: misc.c,v 1.10 2003/09/26 22:22:26 tedu Exp $"; 38 #endif /* not lint */ 39 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 #include <sys/uio.h> 43 44 #include <err.h> 45 #include <errno.h> 46 #include <fts.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 #include "find.h" 53 54 /* 55 * brace_subst -- 56 * Replace occurrences of {} in s1 with s2 and return the result string. 57 */ 58 void 59 brace_subst(char *orig, char **store, char *path, int len) 60 { 61 int plen; 62 char ch, *p; 63 64 plen = strlen(path); 65 for (p = *store; (ch = *orig); ++orig) 66 if (ch == '{' && orig[1] == '}') { 67 while ((p - *store) + plen > len) { 68 int newlen = len * 2; 69 char *newstore; 70 71 if (!(newstore = realloc(*store, newlen))) 72 err(1, NULL); 73 *store = newstore; 74 len = newlen; 75 } 76 memmove(p, path, plen); 77 p += plen; 78 ++orig; 79 } else 80 *p++ = ch; 81 *p = '\0'; 82 } 83 84 /* 85 * queryuser -- 86 * print a message to standard error and then read input from standard 87 * input. If the input is 'y' then 1 is returned. 88 */ 89 int 90 queryuser(char **argv) 91 { 92 int ch, first, nl; 93 94 (void)fprintf(stderr, "\"%s", *argv); 95 while (*++argv) 96 (void)fprintf(stderr, " %s", *argv); 97 (void)fprintf(stderr, "\"? "); 98 (void)fflush(stderr); 99 100 first = ch = getchar(); 101 for (nl = 0;;) { 102 if (ch == '\n') { 103 nl = 1; 104 break; 105 } 106 if (ch == EOF) 107 break; 108 ch = getchar(); 109 } 110 111 if (!nl) { 112 (void)fprintf(stderr, "\n"); 113 (void)fflush(stderr); 114 } 115 return (first == 'y'); 116 } 117 118 /* 119 * emalloc -- 120 * malloc with error checking. 121 */ 122 void * 123 emalloc(u_int len) 124 { 125 void *p; 126 127 if ((p = malloc(len))) 128 return (p); 129 err(1, NULL); 130 } 131 132 /* 133 * show_path -- 134 * called on SIGINFO 135 */ 136 /* ARGSUSED */ 137 void 138 show_path(int signo) 139 { 140 int save_errno = errno; 141 extern FTSENT *entry; 142 struct iovec iov[3]; 143 144 if (entry != NULL) { 145 iov[0].iov_base = "find path: "; 146 iov[0].iov_len = strlen(iov[0].iov_base); 147 iov[1].iov_base = entry->fts_path; 148 iov[1].iov_len = entry->fts_pathlen; 149 iov[2].iov_base = "\n"; 150 iov[2].iov_len = strlen(iov[2].iov_base); 151 writev(STDERR_FILENO, iov, 3); 152 errno = save_errno; 153 } 154 } 155