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/*- |
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* SPDX-License-Identifier: BSD-3-Clause |
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* |
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* Copyright (c) 1988, 1993, 1994 |
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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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* David Hitz of Auspex Systems Inc. |
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* |
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* Redistribution and use in source and binary forms, with or without |
| 11 |
* 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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|
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#if 0 |
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#ifndef lint |
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static char const copyright[] = |
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"@(#) Copyright (c) 1988, 1993, 1994\n\ |
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The Regents of the University of California. All rights reserved.\n"; |
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#endif /* not lint */ |
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|
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#ifndef lint |
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static char sccsid[] = "@(#)cp.c 8.2 (Berkeley) 4/1/94"; |
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#endif /* not lint */ |
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#endif |
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#include <sys/cdefs.h> |
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__FBSDID("$FreeBSD$"); |
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|
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/* |
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* Cp copies source files to target files. |
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* |
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* The global PATH_T structure "to" always contains the path to the |
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* current target file. Since fts(3) does not change directories, |
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* this path can be either absolute or dot-relative. |
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* |
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* The basic algorithm is to initialize "to" and use fts(3) to traverse |
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* the file hierarchy rooted in the argument list. A trivial case is the |
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* case of 'cp file1 file2'. The more interesting case is the case of |
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* 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the |
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* path (relative to the root of the traversal) is appended to dir (stored |
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* in "to") to form the final target path. |
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*/ |
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|
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#include <sys/types.h> |
| 65 |
#include <sys/stat.h> |
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|
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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 <limits.h> |
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#include <signal.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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|
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#include "extern.h" |
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|
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#define STRIP_TRAILING_SLASH(p) { \ |
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while ((p).p_end > (p).p_path + 1 && (p).p_end[-1] == '/') \ |
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*--(p).p_end = 0; \ |
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} |
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|
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static char emptystring[] = ""; |
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|
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PATH_T to = { to.p_path, emptystring, "" }; |
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|
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int fflag, iflag, lflag, nflag, pflag, sflag, vflag; |
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static int Rflag, rflag; |
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volatile sig_atomic_t info; |
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|
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enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE }; |
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|
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static int copy(char *[], enum op, int); |
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static void siginfo(int __unused); |
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|
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int |
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main(int argc, char *argv[]) |
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{ |
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struct stat to_stat, tmp_stat; |
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enum op type; |
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int Hflag, Lflag, ch, fts_options, r, have_trailing_slash; |
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char *target; |
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|
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fts_options = FTS_NOCHDIR | FTS_PHYSICAL; |
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Hflag = Lflag = 0; |
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while ((ch = getopt(argc, argv, "HLPRafilnprsvx")) != -1) |
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switch (ch) { |
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case 'H': |
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Hflag = 1; |
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Lflag = 0; |
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break; |
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case 'L': |
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Lflag = 1; |
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Hflag = 0; |
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break; |
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case 'P': |
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Hflag = Lflag = 0; |
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break; |
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case 'R': |
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Rflag = 1; |
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break; |
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case 'a': |
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pflag = 1; |
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Rflag = 1; |
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Hflag = Lflag = 0; |
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break; |
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case 'f': |
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fflag = 1; |
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iflag = nflag = 0; |
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break; |
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case 'i': |
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iflag = 1; |
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fflag = nflag = 0; |
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break; |
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case 'l': |
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lflag = 1; |
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break; |
| 139 |
case 'n': |
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nflag = 1; |
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fflag = iflag = 0; |
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break; |
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case 'p': |
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pflag = 1; |
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break; |
| 146 |
case 'r': |
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rflag = Lflag = 1; |
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Hflag = 0; |
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break; |
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case 's': |
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sflag = 1; |
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break; |
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case 'v': |
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vflag = 1; |
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break; |
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case 'x': |
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fts_options |= FTS_XDEV; |
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break; |
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default: |
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usage(); |
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break; |
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} |
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argc -= optind; |
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argv += optind; |
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|
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if (argc < 2) |
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usage(); |
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|
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if (Rflag && rflag) |
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errx(1, "the -R and -r options may not be specified together"); |
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if (lflag && sflag) |
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errx(1, "the -l and -s options may not be specified together"); |
| 173 |
if (rflag) |
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Rflag = 1; |
| 175 |
if (Rflag) { |
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if (Hflag) |
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fts_options |= FTS_COMFOLLOW; |
| 178 |
if (Lflag) { |
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fts_options &= ~FTS_PHYSICAL; |
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fts_options |= FTS_LOGICAL; |
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} |
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} else { |
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fts_options &= ~FTS_PHYSICAL; |
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fts_options |= FTS_LOGICAL | FTS_COMFOLLOW; |
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} |
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(void)signal(SIGINFO, siginfo); |
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|
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/* Save the target base in "to". */ |
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target = argv[--argc]; |
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if (strlcpy(to.p_path, target, sizeof(to.p_path)) >= sizeof(to.p_path)) |
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errx(1, "%s: name too long", target); |
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to.p_end = to.p_path + strlen(to.p_path); |
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if (to.p_path == to.p_end) { |
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*to.p_end++ = '.'; |
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*to.p_end = 0; |
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} |
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have_trailing_slash = (to.p_end[-1] == '/'); |
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if (have_trailing_slash) |
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STRIP_TRAILING_SLASH(to); |
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to.target_end = to.p_end; |
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|
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/* Set end of argument list for fts(3). */ |
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argv[argc] = NULL; |
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|
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/* |
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* Cp has two distinct cases: |
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* |
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* cp [-R] source target |
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* cp [-R] source1 ... sourceN directory |
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* |
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* In both cases, source can be either a file or a directory. |
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* |
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* In (1), the target becomes a copy of the source. That is, if the |
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* source is a file, the target will be a file, and likewise for |
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* directories. |
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* |
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* In (2), the real target is not directory, but "directory/source". |
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*/ |
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r = stat(to.p_path, &to_stat); |
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if (r == -1 && errno != ENOENT) |
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err(1, "%s", to.p_path); |
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if (r == -1 || !S_ISDIR(to_stat.st_mode)) { |
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/* |
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* Case (1). Target is not a directory. |
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*/ |
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if (argc > 1) |
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errx(1, "%s is not a directory", to.p_path); |
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|
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/* |
| 230 |
* Need to detect the case: |
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* cp -R dir foo |
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* Where dir is a directory and foo does not exist, where |
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* we want pathname concatenations turned on but not for |
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* the initial mkdir(). |
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*/ |
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if (r == -1) { |
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if (Rflag && (Lflag || Hflag)) |
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stat(*argv, &tmp_stat); |
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else |
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lstat(*argv, &tmp_stat); |
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|
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if (S_ISDIR(tmp_stat.st_mode) && Rflag) |
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type = DIR_TO_DNE; |
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else |
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type = FILE_TO_FILE; |
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} else |
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type = FILE_TO_FILE; |
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|
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if (have_trailing_slash && type == FILE_TO_FILE) { |
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if (r == -1) { |
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errx(1, "directory %s does not exist", |
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to.p_path); |
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} else |
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errx(1, "%s is not a directory", to.p_path); |
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} |
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} else |
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/* |
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* Case (2). Target is a directory. |
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*/ |
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type = FILE_TO_DIR; |
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|
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exit (copy(argv, type, fts_options)); |
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} |
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|
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static int |
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copy(char *argv[], enum op type, int fts_options) |
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{ |
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struct stat to_stat; |
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FTS *ftsp; |
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FTSENT *curr; |
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int base = 0, dne, badcp, rval; |
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size_t nlen; |
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char *p, *target_mid; |
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mode_t mask, mode; |
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|
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/* |
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* Keep an inverted copy of the umask, for use in correcting |
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* permissions on created directories when not using -p. |
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*/ |
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mask = ~umask(0777); |
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umask(~mask); |
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|
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if ((ftsp = fts_open(argv, fts_options, NULL)) == NULL) |
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err(1, "fts_open"); |
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for (badcp = rval = 0; errno = 0, (curr = fts_read(ftsp)) != NULL; |
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badcp = 0) { |
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switch (curr->fts_info) { |
| 288 |
case FTS_NS: |
| 289 |
case FTS_DNR: |
| 290 |
case FTS_ERR: |
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warnx("%s: %s", |
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curr->fts_path, strerror(curr->fts_errno)); |
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badcp = rval = 1; |
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continue; |
| 295 |
case FTS_DC: /* Warn, continue. */ |
| 296 |
warnx("%s: directory causes a cycle", curr->fts_path); |
| 297 |
badcp = rval = 1; |
| 298 |
continue; |
| 299 |
default: |
| 300 |
; |
| 301 |
} |
| 302 |
|
| 303 |
/* |
| 304 |
* If we are in case (2) or (3) above, we need to append the |
| 305 |
* source name to the target name. |
| 306 |
*/ |
| 307 |
if (type != FILE_TO_FILE) { |
| 308 |
/* |
| 309 |
* Need to remember the roots of traversals to create |
| 310 |
* correct pathnames. If there's a directory being |
| 311 |
* copied to a non-existent directory, e.g. |
| 312 |
* cp -R a/dir noexist |
| 313 |
* the resulting path name should be noexist/foo, not |
| 314 |
* noexist/dir/foo (where foo is a file in dir), which |
| 315 |
* is the case where the target exists. |
| 316 |
* |
| 317 |
* Also, check for "..". This is for correct path |
| 318 |
* concatenation for paths ending in "..", e.g. |
| 319 |
* cp -R .. /tmp |
| 320 |
* Paths ending in ".." are changed to ".". This is |
| 321 |
* tricky, but seems the easiest way to fix the problem. |
| 322 |
* |
| 323 |
* XXX |
| 324 |
* Since the first level MUST be FTS_ROOTLEVEL, base |
| 325 |
* is always initialized. |
| 326 |
*/ |
| 327 |
if (curr->fts_level == FTS_ROOTLEVEL) { |
| 328 |
if (type != DIR_TO_DNE) { |
| 329 |
p = strrchr(curr->fts_path, '/'); |
| 330 |
base = (p == NULL) ? 0 : |
| 331 |
(int)(p - curr->fts_path + 1); |
| 332 |
|
| 333 |
if (!strcmp(&curr->fts_path[base], |
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"..")) |
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base += 1; |
| 336 |
} else |
| 337 |
base = curr->fts_pathlen; |
| 338 |
} |
| 339 |
|
| 340 |
p = &curr->fts_path[base]; |
| 341 |
nlen = curr->fts_pathlen - base; |
| 342 |
target_mid = to.target_end; |
| 343 |
if (*p != '/' && target_mid[-1] != '/') |
| 344 |
*target_mid++ = '/'; |
| 345 |
*target_mid = 0; |
| 346 |
if (target_mid - to.p_path + nlen >= PATH_MAX) { |
| 347 |
warnx("%s%s: name too long (not copied)", |
| 348 |
to.p_path, p); |
| 349 |
badcp = rval = 1; |
| 350 |
continue; |
| 351 |
} |
| 352 |
(void)strncat(target_mid, p, nlen); |
| 353 |
to.p_end = target_mid + nlen; |
| 354 |
*to.p_end = 0; |
| 355 |
STRIP_TRAILING_SLASH(to); |
| 356 |
} |
| 357 |
|
| 358 |
if (curr->fts_info == FTS_DP) { |
| 359 |
/* |
| 360 |
* We are nearly finished with this directory. If we |
| 361 |
* didn't actually copy it, or otherwise don't need to |
| 362 |
* change its attributes, then we are done. |
| 363 |
*/ |
| 364 |
if (!curr->fts_number) |
| 365 |
continue; |
| 366 |
/* |
| 367 |
* If -p is in effect, set all the attributes. |
| 368 |
* Otherwise, set the correct permissions, limited |
| 369 |
* by the umask. Optimise by avoiding a chmod() |
| 370 |
* if possible (which is usually the case if we |
| 371 |
* made the directory). Note that mkdir() does not |
| 372 |
* honour setuid, setgid and sticky bits, but we |
| 373 |
* normally want to preserve them on directories. |
| 374 |
*/ |
| 375 |
if (pflag) { |
| 376 |
if (setfile(curr->fts_statp, -1)) |
| 377 |
rval = 1; |
| 378 |
if (preserve_dir_acls(curr->fts_statp, |
| 379 |
curr->fts_accpath, to.p_path) != 0) |
| 380 |
rval = 1; |
| 381 |
} else { |
| 382 |
mode = curr->fts_statp->st_mode; |
| 383 |
if ((mode & (S_ISUID | S_ISGID | S_ISTXT)) || |
| 384 |
((mode | S_IRWXU) & mask) != (mode & mask)) |
| 385 |
if (chmod(to.p_path, mode & mask) != |
| 386 |
0) { |
| 387 |
warn("chmod: %s", to.p_path); |
| 388 |
rval = 1; |
| 389 |
} |
| 390 |
} |
| 391 |
continue; |
| 392 |
} |
| 393 |
|
| 394 |
/* Not an error but need to remember it happened. */ |
| 395 |
if (stat(to.p_path, &to_stat) == -1) |
| 396 |
dne = 1; |
| 397 |
else { |
| 398 |
if (to_stat.st_dev == curr->fts_statp->st_dev && |
| 399 |
to_stat.st_ino == curr->fts_statp->st_ino) { |
| 400 |
warnx("%s and %s are identical (not copied).", |
| 401 |
to.p_path, curr->fts_path); |
| 402 |
badcp = rval = 1; |
| 403 |
if (S_ISDIR(curr->fts_statp->st_mode)) |
| 404 |
(void)fts_set(ftsp, curr, FTS_SKIP); |
| 405 |
continue; |
| 406 |
} |
| 407 |
if (!S_ISDIR(curr->fts_statp->st_mode) && |
| 408 |
S_ISDIR(to_stat.st_mode)) { |
| 409 |
warnx("cannot overwrite directory %s with " |
| 410 |
"non-directory %s", |
| 411 |
to.p_path, curr->fts_path); |
| 412 |
badcp = rval = 1; |
| 413 |
continue; |
| 414 |
} |
| 415 |
dne = 0; |
| 416 |
} |
| 417 |
|
| 418 |
switch (curr->fts_statp->st_mode & S_IFMT) { |
| 419 |
case S_IFLNK: |
| 420 |
/* Catch special case of a non-dangling symlink. */ |
| 421 |
if ((fts_options & FTS_LOGICAL) || |
| 422 |
((fts_options & FTS_COMFOLLOW) && |
| 423 |
curr->fts_level == 0)) { |
| 424 |
if (copy_file(curr, dne)) |
| 425 |
badcp = rval = 1; |
| 426 |
} else { |
| 427 |
if (copy_link(curr, !dne)) |
| 428 |
badcp = rval = 1; |
| 429 |
} |
| 430 |
break; |
| 431 |
case S_IFDIR: |
| 432 |
if (!Rflag) { |
| 433 |
warnx("%s is a directory (not copied).", |
| 434 |
curr->fts_path); |
| 435 |
(void)fts_set(ftsp, curr, FTS_SKIP); |
| 436 |
badcp = rval = 1; |
| 437 |
break; |
| 438 |
} |
| 439 |
/* |
| 440 |
* If the directory doesn't exist, create the new |
| 441 |
* one with the from file mode plus owner RWX bits, |
| 442 |
* modified by the umask. Trade-off between being |
| 443 |
* able to write the directory (if from directory is |
| 444 |
* 555) and not causing a permissions race. If the |
| 445 |
* umask blocks owner writes, we fail. |
| 446 |
*/ |
| 447 |
if (dne) { |
| 448 |
if (mkdir(to.p_path, |
| 449 |
curr->fts_statp->st_mode | S_IRWXU) < 0) |
| 450 |
err(1, "%s", to.p_path); |
| 451 |
} else if (!S_ISDIR(to_stat.st_mode)) { |
| 452 |
errno = ENOTDIR; |
| 453 |
err(1, "%s", to.p_path); |
| 454 |
} |
| 455 |
/* |
| 456 |
* Arrange to correct directory attributes later |
| 457 |
* (in the post-order phase) if this is a new |
| 458 |
* directory, or if the -p flag is in effect. |
| 459 |
*/ |
| 460 |
curr->fts_number = pflag || dne; |
| 461 |
break; |
| 462 |
case S_IFBLK: |
| 463 |
case S_IFCHR: |
| 464 |
if (Rflag && !sflag) { |
| 465 |
if (copy_special(curr->fts_statp, !dne)) |
| 466 |
badcp = rval = 1; |
| 467 |
} else { |
| 468 |
if (copy_file(curr, dne)) |
| 469 |
badcp = rval = 1; |
| 470 |
} |
| 471 |
break; |
| 472 |
case S_IFSOCK: |
| 473 |
warnx("%s is a socket (not copied).", |
| 474 |
curr->fts_path); |
| 475 |
break; |
| 476 |
case S_IFIFO: |
| 477 |
if (Rflag && !sflag) { |
| 478 |
if (copy_fifo(curr->fts_statp, !dne)) |
| 479 |
badcp = rval = 1; |
| 480 |
} else { |
| 481 |
if (copy_file(curr, dne)) |
| 482 |
badcp = rval = 1; |
| 483 |
} |
| 484 |
break; |
| 485 |
default: |
| 486 |
if (copy_file(curr, dne)) |
| 487 |
badcp = rval = 1; |
| 488 |
break; |
| 489 |
} |
| 490 |
if (vflag && !badcp) |
| 491 |
(void)printf("%s -> %s\n", curr->fts_path, to.p_path); |
| 492 |
} |
| 493 |
if (errno) |
| 494 |
err(1, "fts_read"); |
| 495 |
fts_close(ftsp); |
| 496 |
return (rval); |
| 497 |
} |
| 498 |
|
| 499 |
static void |
| 500 |
siginfo(int sig __unused) |
| 501 |
{ |
| 502 |
|
| 503 |
info = 1; |
| 504 |
} |
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