| 1 | /*-
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| 2 | * Copyright (c) 1989, 1993, 1994
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * This code is derived from software contributed to Berkeley by
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| 6 | * Ken Smith of The State University of New York at Buffalo.
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| 7 | *
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| 8 | * Redistribution and use in source and binary forms, with or without
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| 9 | * modification, are permitted provided that the following conditions
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| 10 | * are met:
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | * 4. Neither the name of the University nor the names of its contributors
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| 17 | * may be used to endorse or promote products derived from this software
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| 18 | * without specific prior written permission.
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| 19 | *
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 30 | * SUCH DAMAGE.
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| 31 | */
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| 32 |
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| 33 | #if 0
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| 34 | #ifndef lint
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| 35 | static char const copyright[] =
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| 36 | "@(#) Copyright (c) 1989, 1993, 1994\n\
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| 37 | The Regents of the University of California. All rights reserved.\n";
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| 38 | #endif /* not lint */
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| 39 |
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| 40 | #ifndef lint
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| 41 | static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
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| 42 | #endif /* not lint */
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| 43 | #endif
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| 44 | #if 0
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| 45 | #include <sys/cdefs.h>
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| 46 | __FBSDID("$FreeBSD: src/bin/mv/mv.c,v 1.46 2005/09/05 04:36:08 csjp Exp $");
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| 47 | #endif
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| 48 |
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| 49 | #include <sys/types.h>
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| 50 | #ifndef _MSC_VER
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| 51 | #ifndef __OS2__
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| 52 | #include <sys/acl.h>
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| 53 | #endif
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| 54 | #include <sys/param.h>
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| 55 | #include <sys/time.h>
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| 56 | #include <sys/wait.h>
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| 57 | #include <sys/mount.h>
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| 58 | #endif
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| 59 | #include <sys/stat.h>
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| 60 |
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| 61 | #include "err.h"
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| 62 | #include <errno.h>
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| 63 | #include <fcntl.h>
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| 64 | #ifndef _MSC_VER
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| 65 | #include <grp.h>
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| 66 | #endif
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| 67 | #include <limits.h>
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| 68 | #ifndef _MSC_VER
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| 69 | #include <paths.h>
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| 70 | #include <pwd.h>
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| 71 | #endif
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| 72 | #include <stdio.h>
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| 73 | #include <stdlib.h>
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| 74 | #include <string.h>
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| 75 | #ifndef _MSC_VER
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| 76 | #include <sysexits.h>
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| 77 | #include <unistd.h>
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| 78 | #else
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| 79 | #include "mscfakes.h"
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| 80 | #endif
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| 81 |
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| 82 | #if !defined(__FreeBSD__) && !defined(__APPLE__)
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| 83 | extern void strmode(mode_t mode, char *p);
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| 84 | #endif
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| 85 |
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| 86 | static int fflg, iflg, nflg, vflg;
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| 87 |
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| 88 | static int do_move(char *, char *);
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| 89 | #ifdef CROSS_DEVICE_MOVE
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| 90 | static int fastcopy(char *, char *, struct stat *);
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| 91 | static int copy(char *, char *);
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| 92 | #endif
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| 93 | static int usage(void);
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| 94 |
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| 95 | #if !defined(__FreeBSD__) && !defined(__APPLE__)
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| 96 | # ifdef __OS2__
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| 97 | static
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| 98 | # endif
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| 99 | const char *user_from_uid(uid_t id, int x)
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| 100 | {
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| 101 | static char s_buf[64];
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| 102 | sprintf(s_buf, "%ld", id);
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| 103 | return s_buf;
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| 104 | }
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| 105 | # ifdef __OS2__
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| 106 | static
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| 107 | # endif
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| 108 | const char *group_from_gid(gid_t id, int x)
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| 109 | {
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| 110 | static char s_buf[64];
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| 111 | sprintf(s_buf, "%ld", id);
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| 112 | return s_buf;
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| 113 | }
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| 114 | #endif
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| 115 |
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| 116 |
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| 117 | int
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| 118 | kmk_builtin_mv(int argc, char *argv[])
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| 119 | {
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| 120 | size_t baselen, len;
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| 121 | int rval;
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| 122 | char *p, *endp;
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| 123 | struct stat sb;
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| 124 | int ch;
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| 125 | char path[PATH_MAX];
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| 126 |
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| 127 | /* kmk: reinitialize globals */
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| 128 | fflg = iflg = nflg = vflg = 0;
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| 129 |
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| 130 | /* kmk: reset getopt and set progname */
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| 131 | g_progname = argv[0];
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| 132 | opterr = 1;
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| 133 | optarg = NULL;
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| 134 | optopt = 0;
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| 135 | #if defined(__FreeBSD__) || defined(__EMX__) || defined(__APPLE__)
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| 136 | optreset = 1;
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| 137 | optind = 1;
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| 138 | #else
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| 139 | optind = 0; /* init */
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| 140 | #endif
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| 141 |
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| 142 | while ((ch = getopt(argc, argv, "finv")) != -1)
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| 143 | switch (ch) {
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| 144 | case 'i':
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| 145 | iflg = 1;
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| 146 | fflg = nflg = 0;
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| 147 | break;
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| 148 | case 'f':
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| 149 | fflg = 1;
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| 150 | iflg = nflg = 0;
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| 151 | break;
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| 152 | case 'n':
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| 153 | nflg = 1;
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| 154 | fflg = iflg = 0;
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| 155 | break;
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| 156 | case 'v':
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| 157 | vflg = 1;
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| 158 | break;
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| 159 | default:
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| 160 | return usage();
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| 161 | }
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| 162 | argc -= optind;
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| 163 | argv += optind;
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| 164 |
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| 165 | if (argc < 2)
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| 166 | return usage();
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| 167 |
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| 168 | /*
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| 169 | * If the stat on the target fails or the target isn't a directory,
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| 170 | * try the move. More than 2 arguments is an error in this case.
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| 171 | */
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| 172 | if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
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| 173 | if (argc > 2)
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| 174 | return usage();
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| 175 | return do_move(argv[0], argv[1]);
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| 176 | }
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| 177 |
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| 178 | /* It's a directory, move each file into it. */
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| 179 | if (strlen(argv[argc - 1]) > sizeof(path) - 1)
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| 180 | return errx(1, "%s: destination pathname too long", *argv);
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| 181 | (void)strcpy(path, argv[argc - 1]);
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| 182 | baselen = strlen(path);
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| 183 | endp = &path[baselen];
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| 184 | #if defined(_MSC_VER) || defined(__EMX__)
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| 185 | if (!baselen || (*(endp - 1) != '/' && *(endp - 1) != '\\' && *(endp - 1) != ':')) {
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| 186 | #else
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| 187 | if (!baselen || *(endp - 1) != '/') {
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| 188 | #endif
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| 189 | *endp++ = '/';
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| 190 | ++baselen;
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| 191 | }
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| 192 | for (rval = 0; --argc; ++argv) {
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| 193 | /*
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| 194 | * Find the last component of the source pathname. It
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| 195 | * may have trailing slashes.
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| 196 | */
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| 197 | p = *argv + strlen(*argv);
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| 198 | #if defined(_MSC_VER) || defined(__EMX__)
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| 199 | while (p != *argv && (p[-1] == '/' || p[-1] == '\\'))
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| 200 | --p;
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| 201 | while (p != *argv && p[-1] != '/' && p[-1] != '/' && p[-1] != ':')
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| 202 | --p;
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| 203 | #else
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| 204 | while (p != *argv && p[-1] == '/')
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| 205 | --p;
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| 206 | while (p != *argv && p[-1] != '/')
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| 207 | --p;
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| 208 | #endif
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| 209 |
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| 210 | if ((baselen + (len = strlen(p))) >= PATH_MAX) {
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| 211 | warnx("%s: destination pathname too long", *argv);
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| 212 | rval = 1;
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| 213 | } else {
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| 214 | memmove(endp, p, (size_t)len + 1);
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| 215 | if (do_move(*argv, path))
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| 216 | rval = 1;
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| 217 | }
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| 218 | }
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| 219 | return rval;
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| 220 | }
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| 221 |
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| 222 | static int
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| 223 | do_move(char *from, char *to)
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| 224 | {
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| 225 | struct stat sb;
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| 226 | int ask, ch, first;
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| 227 | char modep[15];
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| 228 |
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| 229 | /*
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| 230 | * Check access. If interactive and file exists, ask user if it
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| 231 | * should be replaced. Otherwise if file exists but isn't writable
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| 232 | * make sure the user wants to clobber it.
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| 233 | */
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| 234 | if (!fflg && !access(to, F_OK)) {
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| 235 |
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| 236 | /* prompt only if source exist */
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| 237 | if (lstat(from, &sb) == -1) {
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| 238 | warn("%s", from);
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| 239 | return (1);
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| 240 | }
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| 241 |
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| 242 | #define YESNO "(y/n [n]) "
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| 243 | ask = 0;
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| 244 | if (nflg) {
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| 245 | if (vflg)
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| 246 | printf("%s not overwritten\n", to);
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| 247 | return (0);
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| 248 | } else if (iflg) {
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| 249 | (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
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| 250 | ask = 1;
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| 251 | } else if (access(to, W_OK) && !stat(to, &sb)) {
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| 252 | strmode(sb.st_mode, modep);
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| 253 | (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
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| 254 | modep + 1, modep[9] == ' ' ? "" : " ",
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| 255 | user_from_uid((unsigned long)sb.st_uid, 0),
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| 256 | group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
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| 257 | ask = 1;
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| 258 | }
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| 259 | if (ask) {
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| 260 | first = ch = getchar();
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| 261 | while (ch != '\n' && ch != EOF)
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| 262 | ch = getchar();
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| 263 | if (first != 'y' && first != 'Y') {
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| 264 | (void)fprintf(stderr, "not overwritten\n");
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| 265 | return (0);
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| 266 | }
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| 267 | }
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| 268 | }
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| 269 | if (!rename(from, to)) {
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| 270 | if (vflg)
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| 271 | printf("%s -> %s\n", from, to);
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| 272 | return (0);
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| 273 | }
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| 274 | #ifdef _MSC_VER
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| 275 | if (errno == EEXIST) {
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| 276 | remove(to);
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| 277 | if (!rename(from, to)) {
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| 278 | if (vflg)
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| 279 | printf("%s -> %s\n", from, to);
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| 280 | return (0);
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| 281 | }
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| 282 | }
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| 283 | #endif
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| 284 |
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| 285 | if (errno == EXDEV) {
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| 286 | #ifndef CROSS_DEVICE_MOVE
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| 287 | warnx("cannot move `%s' to a different device: `%s'", from, to);
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| 288 | return (1);
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| 289 | #else
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| 290 | struct statfs sfs;
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| 291 | char path[PATH_MAX];
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| 292 |
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| 293 | /*
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| 294 | * If the source is a symbolic link and is on another
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| 295 | * filesystem, it can be recreated at the destination.
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| 296 | */
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| 297 | if (lstat(from, &sb) == -1) {
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| 298 | warn("%s", from);
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| 299 | return (1);
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| 300 | }
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| 301 | if (!S_ISLNK(sb.st_mode)) {
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| 302 | /* Can't mv(1) a mount point. */
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| 303 | if (realpath(from, path) == NULL) {
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| 304 | warnx("cannot resolve %s: %s", from, path);
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| 305 | return (1);
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| 306 | }
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| 307 | if (!statfs(path, &sfs) &&
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| 308 | !strcmp(path, sfs.f_mntonname)) {
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| 309 | warnx("cannot rename a mount point");
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| 310 | return (1);
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| 311 | }
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| 312 | }
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| 313 | #endif
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| 314 | } else {
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| 315 | warn("rename %s to %s", from, to);
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| 316 | return (1);
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| 317 | }
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| 318 |
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| 319 | #ifdef CROSS_DEVICE_MOVE
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| 320 | /*
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| 321 | * If rename fails because we're trying to cross devices, and
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| 322 | * it's a regular file, do the copy internally; otherwise, use
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| 323 | * cp and rm.
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| 324 | */
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| 325 | if (lstat(from, &sb)) {
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| 326 | warn("%s", from);
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| 327 | return (1);
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| 328 | }
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| 329 | return (S_ISREG(sb.st_mode) ?
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| 330 | fastcopy(from, to, &sb) : copy(from, to));
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| 331 | #endif
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| 332 | }
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| 333 |
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| 334 | #ifdef CROSS_DEVICE_MOVE
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| 335 | int
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| 336 | static fastcopy(char *from, char *to, struct stat *sbp)
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| 337 | {
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| 338 | struct timeval tval[2];
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| 339 | static u_int blen;
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| 340 | static char *bp;
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| 341 | mode_t oldmode;
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| 342 | int nread, from_fd, to_fd;
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| 343 | acl_t acl;
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| 344 |
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| 345 | if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
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| 346 | warn("%s", from);
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| 347 | return (1);
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| 348 | }
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| 349 | if (blen < sbp->st_blksize) {
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| 350 | if (bp != NULL)
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| 351 | free(bp);
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| 352 | if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
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| 353 | blen = 0;
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| 354 | warnx("malloc failed");
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| 355 | return (1);
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| 356 | }
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| 357 | blen = sbp->st_blksize;
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| 358 | }
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| 359 | while ((to_fd =
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| 360 | open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
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| 361 | if (errno == EEXIST && unlink(to) == 0)
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| 362 | continue;
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| 363 | warn("%s", to);
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| 364 | (void)close(from_fd);
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| 365 | return (1);
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| 366 | }
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| 367 | while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
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| 368 | if (write(to_fd, bp, (size_t)nread) != nread) {
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| 369 | warn("%s", to);
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| 370 | goto err;
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| 371 | }
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| 372 | if (nread < 0) {
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| 373 | warn("%s", from);
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| 374 | err: if (unlink(to))
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| 375 | warn("%s: remove", to);
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| 376 | (void)close(from_fd);
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| 377 | (void)close(to_fd);
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| 378 | return (1);
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| 379 | }
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| 380 |
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| 381 | oldmode = sbp->st_mode & ALLPERMS;
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| 382 | if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
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| 383 | warn("%s: set owner/group (was: %lu/%lu)", to,
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| 384 | (u_long)sbp->st_uid, (u_long)sbp->st_gid);
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| 385 | if (oldmode & (S_ISUID | S_ISGID)) {
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| 386 | warnx(
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| 387 | "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
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| 388 | to, oldmode);
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| 389 | sbp->st_mode &= ~(S_ISUID | S_ISGID);
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| 390 | }
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| 391 | }
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| 392 | /*
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| 393 | * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
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| 394 | * for dest_file, then it's ACLs shall reflect the ACLs of the
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| 395 | * source_file.
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| 396 | */
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| 397 | if (fpathconf(to_fd, _PC_ACL_EXTENDED) == 1 &&
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| 398 | fpathconf(from_fd, _PC_ACL_EXTENDED) == 1) {
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| 399 | acl = acl_get_fd(from_fd);
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| 400 | if (acl == NULL)
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| 401 | warn("failed to get acl entries while setting %s",
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| 402 | from);
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| 403 | else if (acl_set_fd(to_fd, acl) < 0)
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| 404 | warn("failed to set acl entries for %s", to);
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| 405 | }
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| 406 | (void)close(from_fd);
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| 407 | if (fchmod(to_fd, sbp->st_mode))
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| 408 | warn("%s: set mode (was: 0%03o)", to, oldmode);
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| 409 | /*
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| 410 | * XXX
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| 411 | * NFS doesn't support chflags; ignore errors unless there's reason
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| 412 | * to believe we're losing bits. (Note, this still won't be right
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| 413 | * if the server supports flags and we were trying to *remove* flags
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| 414 | * on a file that we copied, i.e., that we didn't create.)
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| 415 | */
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| 416 | errno = 0;
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| 417 | if (fchflags(to_fd, (u_long)sbp->st_flags))
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| 418 | if (errno != EOPNOTSUPP || sbp->st_flags != 0)
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| 419 | warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
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| 420 |
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| 421 | tval[0].tv_sec = sbp->st_atime;
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| 422 | tval[1].tv_sec = sbp->st_mtime;
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| 423 | tval[0].tv_usec = tval[1].tv_usec = 0;
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| 424 | if (utimes(to, tval))
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| 425 | warn("%s: set times", to);
|
|---|
| 426 |
|
|---|
| 427 | if (close(to_fd)) {
|
|---|
| 428 | warn("%s", to);
|
|---|
| 429 | return (1);
|
|---|
| 430 | }
|
|---|
| 431 |
|
|---|
| 432 | if (unlink(from)) {
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|---|
| 433 | warn("%s: remove", from);
|
|---|
| 434 | return (1);
|
|---|
| 435 | }
|
|---|
| 436 | if (vflg)
|
|---|
| 437 | printf("%s -> %s\n", from, to);
|
|---|
| 438 | return (0);
|
|---|
| 439 | }
|
|---|
| 440 |
|
|---|
| 441 | int
|
|---|
| 442 | copy(char *from, char *to)
|
|---|
| 443 | {
|
|---|
| 444 | int pid, status;
|
|---|
| 445 |
|
|---|
| 446 | if ((pid = fork()) == 0) {
|
|---|
| 447 | execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
|
|---|
| 448 | (char *)NULL);
|
|---|
| 449 | warn("%s", _PATH_CP);
|
|---|
| 450 | _exit(1);
|
|---|
| 451 | }
|
|---|
| 452 | if (waitpid(pid, &status, 0) == -1) {
|
|---|
| 453 | warn("%s: waitpid", _PATH_CP);
|
|---|
| 454 | return (1);
|
|---|
| 455 | }
|
|---|
| 456 | if (!WIFEXITED(status)) {
|
|---|
| 457 | warnx("%s: did not terminate normally", _PATH_CP);
|
|---|
| 458 | return (1);
|
|---|
| 459 | }
|
|---|
| 460 | if (WEXITSTATUS(status)) {
|
|---|
| 461 | warnx("%s: terminated with %d (non-zero) status",
|
|---|
| 462 | _PATH_CP, WEXITSTATUS(status));
|
|---|
| 463 | return (1);
|
|---|
| 464 | }
|
|---|
| 465 | if (!(pid = vfork())) {
|
|---|
| 466 | execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
|
|---|
| 467 | warn("%s", _PATH_RM);
|
|---|
| 468 | _exit(1);
|
|---|
| 469 | }
|
|---|
| 470 | if (waitpid(pid, &status, 0) == -1) {
|
|---|
| 471 | warn("%s: waitpid", _PATH_RM);
|
|---|
| 472 | return (1);
|
|---|
| 473 | }
|
|---|
| 474 | if (!WIFEXITED(status)) {
|
|---|
| 475 | warnx("%s: did not terminate normally", _PATH_RM);
|
|---|
| 476 | return (1);
|
|---|
| 477 | }
|
|---|
| 478 | if (WEXITSTATUS(status)) {
|
|---|
| 479 | warnx("%s: terminated with %d (non-zero) status",
|
|---|
| 480 | _PATH_RM, WEXITSTATUS(status));
|
|---|
| 481 | return (1);
|
|---|
| 482 | }
|
|---|
| 483 | return (0);
|
|---|
| 484 | }
|
|---|
| 485 | #endif /* CROSS_DEVICE_MOVE */
|
|---|
| 486 |
|
|---|
| 487 |
|
|---|
| 488 | static int
|
|---|
| 489 | usage(void)
|
|---|
| 490 | {
|
|---|
| 491 |
|
|---|
| 492 | (void)fprintf(stderr, "%s\n%s\n",
|
|---|
| 493 | "usage: mv [-f | -i | -n] [-v] source target",
|
|---|
| 494 | " mv [-f | -i | -n] [-v] source ... directory");
|
|---|
| 495 | return EX_USAGE;
|
|---|
| 496 | }
|
|---|
