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/* $OpenBSD: misc.c,v 1.15 2015/07/14 17:18:48 millert Exp $ */ |
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/*- |
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* Copyright (c) 1990, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* Cimarron D. Taylor of the University of California, Berkeley. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <sys/uio.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <fts.h> |
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#include <stddef.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "find.h" |
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/* |
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* brace_subst -- |
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* Replace occurrences of {} in s1 with s2 and return the result string. |
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*/ |
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void |
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brace_subst(char *orig, char **store, char *path, int len) |
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{ |
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int plen; |
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char ch, *p; |
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plen = strlen(path); |
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✓✓ |
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for (p = *store; (ch = *orig); ++orig) |
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✓✓✓✗
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if (ch == '{' && orig[1] == '}') { |
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✗✓ |
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while ((p - *store) + plen > len) { |
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ptrdiff_t p_off; |
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char *newstore; |
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p_off = (p - *store); |
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newstore = reallocarray(*store, len, 2); |
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if (newstore == NULL) |
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err(1, NULL); |
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p = newstore + p_off; |
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*store = newstore; |
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len *= 2; |
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} |
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memmove(p, path, plen); |
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p += plen; |
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++orig; |
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} else |
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*p++ = ch; |
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*p = '\0'; |
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} |
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/* |
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* queryuser -- |
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* print a message to standard error and then read input from standard |
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* input. If the input is 'y' then 1 is returned. |
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*/ |
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int |
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queryuser(char **argv) |
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{ |
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int ch, first, nl; |
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(void)fprintf(stderr, "\"%s", *argv); |
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while (*++argv) |
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(void)fprintf(stderr, " %s", *argv); |
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(void)fprintf(stderr, "\"? "); |
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(void)fflush(stderr); |
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first = ch = getchar(); |
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for (nl = 0;;) { |
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if (ch == '\n') { |
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nl = 1; |
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break; |
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} |
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if (ch == EOF) |
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break; |
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ch = getchar(); |
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} |
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if (!nl) { |
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(void)fprintf(stderr, "\n"); |
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(void)fflush(stderr); |
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} |
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return (first == 'y'); |
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} |
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/* |
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* emalloc -- |
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* malloc with error checking. |
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*/ |
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void * |
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emalloc(size_t len) |
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{ |
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void *p; |
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✓✗ |
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if ((p = malloc(len))) |
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return (p); |
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err(1, NULL); |
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} |
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void * |
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ereallocarray(void *oldp, size_t sz1, size_t sz2) |
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{ |
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void *p; |
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✓✗ |
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if ((p = reallocarray(oldp, sz1, sz2)) != NULL) |
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return (p); |
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err(1, NULL); |
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} |
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/* |
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* show_path -- |
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* called on SIGINFO |
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*/ |
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/* ARGSUSED */ |
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void |
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show_path(int signo) |
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{ |
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int save_errno = errno; |
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extern FTSENT *entry; |
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struct iovec iov[3]; |
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if (entry != NULL) { |
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iov[0].iov_base = "find path: "; |
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iov[0].iov_len = strlen(iov[0].iov_base); |
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iov[1].iov_base = entry->fts_path; |
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iov[1].iov_len = entry->fts_pathlen; |
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iov[2].iov_base = "\n"; |
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iov[2].iov_len = strlen(iov[2].iov_base); |
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writev(STDERR_FILENO, iov, 3); |
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errno = save_errno; |
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} |
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} |