Annotation of src/usr.bin/find/misc.c, Revision 1.13
1.13 ! millert 1: /* $OpenBSD: misc.c,v 1.12 2014/05/18 08:10:00 espie 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);
1.13 ! millert 68: p = (p - *store) + newstore;
1.10 tedu 69: *store = newstore;
70: len = newlen;
71: }
1.1 deraadt 72: memmove(p, path, plen);
73: p += plen;
74: ++orig;
75: } else
76: *p++ = ch;
77: *p = '\0';
78: }
79:
80: /*
81: * queryuser --
82: * print a message to standard error and then read input from standard
83: * input. If the input is 'y' then 1 is returned.
84: */
85: int
1.9 deraadt 86: queryuser(char **argv)
1.1 deraadt 87: {
88: int ch, first, nl;
89:
90: (void)fprintf(stderr, "\"%s", *argv);
91: while (*++argv)
92: (void)fprintf(stderr, " %s", *argv);
93: (void)fprintf(stderr, "\"? ");
94: (void)fflush(stderr);
95:
96: first = ch = getchar();
97: for (nl = 0;;) {
98: if (ch == '\n') {
99: nl = 1;
100: break;
101: }
102: if (ch == EOF)
103: break;
104: ch = getchar();
105: }
106:
107: if (!nl) {
108: (void)fprintf(stderr, "\n");
109: (void)fflush(stderr);
110: }
111: return (first == 'y');
112: }
113:
114: /*
115: * emalloc --
116: * malloc with error checking.
117: */
118: void *
1.12 espie 119: emalloc(size_t len)
1.1 deraadt 120: {
121: void *p;
122:
1.4 millert 123: if ((p = malloc(len)))
1.12 espie 124: return (p);
125: err(1, NULL);
126: }
127:
128: void *
129: ereallocarray(void *oldp, size_t sz1, size_t sz2)
130: {
131: void *p;
132:
133: if ((p = reallocarray(oldp, sz1, sz2)) != NULL)
1.1 deraadt 134: return (p);
135: err(1, NULL);
1.3 tholo 136: }
137:
138: /*
139: * show_path --
140: * called on SIGINFO
141: */
142: /* ARGSUSED */
143: void
1.9 deraadt 144: show_path(int signo)
1.3 tholo 145: {
1.5 deraadt 146: int save_errno = errno;
1.3 tholo 147: extern FTSENT *entry;
1.9 deraadt 148: struct iovec iov[3];
1.3 tholo 149:
1.6 millert 150: if (entry != NULL) {
1.9 deraadt 151: iov[0].iov_base = "find path: ";
152: iov[0].iov_len = strlen(iov[0].iov_base);
153: iov[1].iov_base = entry->fts_path;
154: iov[1].iov_len = entry->fts_pathlen;
155: iov[2].iov_base = "\n";
156: iov[2].iov_len = strlen(iov[2].iov_base);
157: writev(STDERR_FILENO, iov, 3);
1.6 millert 158: errno = save_errno;
159: }
1.1 deraadt 160: }
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