156 lines
3.9 KiB
C
156 lines
3.9 KiB
C
/* $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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}
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