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/* $OpenBSD: rm.c,v 1.11 2016/10/10 18:13:21 tedu Exp $ */ |
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/* $NetBSD: rm.c,v 1.19 1995/09/07 06:48:50 jtc Exp $ */ |
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/*- |
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* Copyright (c) 1990, 1993, 1994 |
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* The Regents of the University of California. All rights reserved. |
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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 <err.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <fts.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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static int eval; |
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static void checkdot(char **); |
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static void rm_tree(char **); |
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int |
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rmmain(int argc, char *argv[]) |
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{ |
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checkdot(argv); |
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if (*argv) |
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rm_tree(argv); |
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return (eval); |
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} |
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static void |
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rm_tree(char **argv) |
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{ |
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FTS *fts; |
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FTSENT *p; |
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int flags; |
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flags = FTS_PHYSICAL; |
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flags |= FTS_NOSTAT; |
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if (!(fts = fts_open(argv, flags, NULL))) |
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err(1, NULL); |
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while ((p = fts_read(fts)) != NULL) { |
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switch (p->fts_info) { |
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case FTS_DNR: |
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if (p->fts_errno != ENOENT) { |
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warnx("%s: %s", |
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p->fts_path, strerror(p->fts_errno)); |
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eval = 1; |
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} |
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continue; |
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case FTS_ERR: |
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errc(1, p->fts_errno, "%s", p->fts_path); |
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case FTS_D: |
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continue; |
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default: |
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break; |
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} |
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/* |
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* If we can't read or search the directory, may still be |
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* able to remove it. Don't print out the un{read,search}able |
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* message unless the remove fails. |
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*/ |
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switch (p->fts_info) { |
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case FTS_DP: |
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case FTS_DNR: |
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if (!rmdir(p->fts_accpath) || |
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(errno == ENOENT)) |
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continue; |
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break; |
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case FTS_F: |
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case FTS_NSOK: |
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default: |
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if (!unlink(p->fts_accpath) || |
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(errno == ENOENT)) |
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continue; |
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} |
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warn("%s", p->fts_path); |
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eval = 1; |
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} |
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if (errno) |
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err(1, "fts_read"); |
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fts_close(fts); |
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} |
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/* |
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* POSIX.2 requires that if "." or ".." are specified as the basename |
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* portion of an operand, a diagnostic message be written to standard |
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* error and nothing more be done with such operands. |
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* |
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* Since POSIX.2 defines basename as the final portion of a path after |
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* trailing slashes have been removed, we'll remove them here. |
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*/ |
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#define ISDOT(a) ((a)[0] == '.' && (!(a)[1] || ((a)[1] == '.' && !(a)[2]))) |
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static void |
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checkdot(char **argv) |
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{ |
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char *p, **save, **t; |
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int complained; |
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complained = 0; |
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for (t = argv; *t;) { |
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/* strip trailing slashes */ |
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p = strrchr (*t, '\0'); |
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while (--p > *t && *p == '/') |
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*p = '\0'; |
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/* extract basename */ |
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if ((p = strrchr(*t, '/')) != NULL) |
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++p; |
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else |
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p = *t; |
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if (ISDOT(p)) { |
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if (!complained++) |
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warnx("\".\" and \"..\" may not be removed"); |
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eval = 1; |
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for (save = t; (t[0] = t[1]) != NULL; ++t) |
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continue; |
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t = save; |
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} else |
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++t; |
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} |
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} |