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
brace_subst(char * orig,char ** store,char * path,int len)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
queryuser(char ** argv)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 *
emalloc(u_int len)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
show_path(int signo)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