Annotation of src/usr.bin/find/misc.c, Revision 1.16
1.16 ! deraadt 1: /* $OpenBSD: misc.c,v 1.15 2015/07/14 17:18:48 millert 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>
1.15 millert 42: #include <stddef.h>
1.1 deraadt 43: #include <stdio.h>
44: #include <stdlib.h>
45: #include <string.h>
1.3 tholo 46: #include <unistd.h>
1.1 deraadt 47:
48: #include "find.h"
49:
50: /*
51: * brace_subst --
52: * Replace occurrences of {} in s1 with s2 and return the result string.
53: */
54: void
1.9 deraadt 55: brace_subst(char *orig, char **store, char *path, int len)
1.1 deraadt 56: {
1.7 mpech 57: int plen;
58: char ch, *p;
1.1 deraadt 59:
60: plen = strlen(path);
1.4 millert 61: for (p = *store; (ch = *orig); ++orig)
1.1 deraadt 62: if (ch == '{' && orig[1] == '}') {
1.10 tedu 63: while ((p - *store) + plen > len) {
1.15 millert 64: ptrdiff_t p_off;
1.10 tedu 65: char *newstore;
66:
1.15 millert 67: p_off = (p - *store);
1.14 millert 68: newstore = reallocarray(*store, len, 2);
69: if (newstore == NULL)
1.1 deraadt 70: err(1, NULL);
1.15 millert 71: p = newstore + p_off;
1.10 tedu 72: *store = newstore;
1.14 millert 73: len *= 2;
1.10 tedu 74: }
1.1 deraadt 75: memmove(p, path, plen);
76: p += plen;
77: ++orig;
78: } else
79: *p++ = ch;
80: *p = '\0';
81: }
82:
83: /*
84: * queryuser --
85: * print a message to standard error and then read input from standard
86: * input. If the input is 'y' then 1 is returned.
87: */
88: int
1.9 deraadt 89: queryuser(char **argv)
1.1 deraadt 90: {
91: int ch, first, nl;
92:
93: (void)fprintf(stderr, "\"%s", *argv);
94: while (*++argv)
95: (void)fprintf(stderr, " %s", *argv);
96: (void)fprintf(stderr, "\"? ");
97: (void)fflush(stderr);
98:
99: first = ch = getchar();
100: for (nl = 0;;) {
101: if (ch == '\n') {
102: nl = 1;
103: break;
104: }
105: if (ch == EOF)
106: break;
107: ch = getchar();
108: }
109:
110: if (!nl) {
111: (void)fprintf(stderr, "\n");
112: (void)fflush(stderr);
113: }
114: return (first == 'y');
115: }
116:
117: /*
118: * emalloc --
119: * malloc with error checking.
120: */
121: void *
1.12 espie 122: emalloc(size_t len)
1.1 deraadt 123: {
124: void *p;
125:
1.4 millert 126: if ((p = malloc(len)))
1.12 espie 127: return (p);
128: err(1, NULL);
129: }
130:
131: void *
132: ereallocarray(void *oldp, size_t sz1, size_t sz2)
133: {
134: void *p;
135:
136: if ((p = reallocarray(oldp, sz1, sz2)) != NULL)
1.1 deraadt 137: return (p);
138: err(1, NULL);
1.3 tholo 139: }
140:
141: /*
142: * show_path --
143: * called on SIGINFO
144: */
145: /* ARGSUSED */
146: void
1.9 deraadt 147: show_path(int signo)
1.3 tholo 148: {
1.5 deraadt 149: int save_errno = errno;
1.3 tholo 150: extern FTSENT *entry;
151:
1.6 millert 152: if (entry != NULL) {
1.16 ! deraadt 153: dprintf(STDERR_FILENO, "find path: %*s\n",
! 154: entry->fts_pathlen, entry->fts_path);
1.6 millert 155: errno = save_errno;
156: }
1.1 deraadt 157: }
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