Annotation of src/usr.bin/find/misc.c, Revision 1.11
1.11 ! deraadt 1: /* $OpenBSD: misc.c,v 1.10 2003/09/26 22:22:26 tedu Exp $ */
1.2 deraadt 2:
1.1 deraadt 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.
1.8 millert 18: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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>
1.9 deraadt 37: #include <sys/uio.h>
1.1 deraadt 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>
1.3 tholo 45: #include <unistd.h>
1.1 deraadt 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
1.9 deraadt 54: brace_subst(char *orig, char **store, char *path, int len)
1.1 deraadt 55: {
1.7 mpech 56: int plen;
57: char ch, *p;
1.1 deraadt 58:
59: plen = strlen(path);
1.4 millert 60: for (p = *store; (ch = *orig); ++orig)
1.1 deraadt 61: if (ch == '{' && orig[1] == '}') {
1.10 tedu 62: while ((p - *store) + plen > len) {
63: int newlen = len * 2;
64: char *newstore;
65:
66: if (!(newstore = realloc(*store, newlen)))
1.1 deraadt 67: err(1, NULL);
1.10 tedu 68: *store = newstore;
69: len = newlen;
70: }
1.1 deraadt 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
1.9 deraadt 85: queryuser(char **argv)
1.1 deraadt 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 *
1.9 deraadt 118: emalloc(u_int len)
1.1 deraadt 119: {
120: void *p;
121:
1.4 millert 122: if ((p = malloc(len)))
1.1 deraadt 123: return (p);
124: err(1, NULL);
1.3 tholo 125: }
126:
127: /*
128: * show_path --
129: * called on SIGINFO
130: */
131: /* ARGSUSED */
132: void
1.9 deraadt 133: show_path(int signo)
1.3 tholo 134: {
1.5 deraadt 135: int save_errno = errno;
1.3 tholo 136: extern FTSENT *entry;
1.9 deraadt 137: struct iovec iov[3];
1.3 tholo 138:
1.6 millert 139: if (entry != NULL) {
1.9 deraadt 140: iov[0].iov_base = "find path: ";
141: iov[0].iov_len = strlen(iov[0].iov_base);
142: iov[1].iov_base = entry->fts_path;
143: iov[1].iov_len = entry->fts_pathlen;
144: iov[2].iov_base = "\n";
145: iov[2].iov_len = strlen(iov[2].iov_base);
146: writev(STDERR_FILENO, iov, 3);
1.6 millert 147: errno = save_errno;
148: }
1.1 deraadt 149: }
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