| 1 | /*-
|
|---|
| 2 | * Copyright (c) 1991, 1993, 1994
|
|---|
| 3 | * The Regents of the University of California. All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 9 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 10 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 11 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 12 | * documentation and/or other materials provided with the distribution.
|
|---|
| 13 | * 4. Neither the name of the University nor the names of its contributors
|
|---|
| 14 | * may be used to endorse or promote products derived from this software
|
|---|
| 15 | * without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 27 | * SUCH DAMAGE.
|
|---|
| 28 | */
|
|---|
| 29 |
|
|---|
| 30 | #ifndef lint
|
|---|
| 31 | #if 0
|
|---|
| 32 | static char sccsid[] = "@(#)utils.c 8.3 (Berkeley) 4/1/94";
|
|---|
| 33 | #include <sys/cdefs.h>
|
|---|
| 34 | __FBSDID("$FreeBSD: src/bin/cp/utils.c,v 1.43 2004/04/06 20:06:44 markm Exp $");
|
|---|
| 35 | #endif
|
|---|
| 36 | #endif /* not lint */
|
|---|
| 37 |
|
|---|
| 38 | #ifndef _MSC_VER
|
|---|
| 39 | # include <sys/param.h>
|
|---|
| 40 | #endif
|
|---|
| 41 | #include <sys/stat.h>
|
|---|
| 42 | #ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
|
|---|
| 43 | # include <sys/mman.h>
|
|---|
| 44 | #endif
|
|---|
| 45 |
|
|---|
| 46 | #include "err.h"
|
|---|
| 47 | #include <errno.h>
|
|---|
| 48 | #include <fcntl.h>
|
|---|
| 49 | #include <fts.h>
|
|---|
| 50 | #include <limits.h>
|
|---|
| 51 | #include <stdio.h>
|
|---|
| 52 | #include <stdlib.h>
|
|---|
| 53 | #include <signal.h>
|
|---|
| 54 | #include <sysexits.h>
|
|---|
| 55 | #include <unistd.h>
|
|---|
| 56 | #ifdef __sun__
|
|---|
| 57 | # include "solfakes.h"
|
|---|
| 58 | #endif
|
|---|
| 59 | #ifdef _MSC_VER
|
|---|
| 60 | # define MSC_DO_64_BIT_IO
|
|---|
| 61 | # include "mscfakes.h"
|
|---|
| 62 | #endif
|
|---|
| 63 | #include "cp_extern.h"
|
|---|
| 64 | #include "cmp_extern.h"
|
|---|
| 65 |
|
|---|
| 66 | #define cp_pct(x,y) (int)(100.0 * (double)(x) / (double)(y))
|
|---|
| 67 |
|
|---|
| 68 | #ifndef MAXBSIZE
|
|---|
| 69 | # define MAXBSIZE 0x20000
|
|---|
| 70 | #endif
|
|---|
| 71 | #ifndef O_BINARY
|
|---|
| 72 | # define O_BINARY 0
|
|---|
| 73 | #endif
|
|---|
| 74 |
|
|---|
| 75 | #ifndef S_ISVTX
|
|---|
| 76 | # define S_ISVTX 0
|
|---|
| 77 | #endif
|
|---|
| 78 |
|
|---|
| 79 |
|
|---|
| 80 | int
|
|---|
| 81 | copy_file(const FTSENT *entp, int dne, int changed_only, int *pcopied)
|
|---|
| 82 | {
|
|---|
| 83 | static char buf[MAXBSIZE];
|
|---|
| 84 | struct stat *fs;
|
|---|
| 85 | int ch, checkch, from_fd, rcount, rval, to_fd;
|
|---|
| 86 | ssize_t wcount;
|
|---|
| 87 | size_t wresid;
|
|---|
| 88 | size_t wtotal;
|
|---|
| 89 | char *bufp;
|
|---|
| 90 | #ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
|
|---|
| 91 | char *p;
|
|---|
| 92 | #endif
|
|---|
| 93 |
|
|---|
| 94 | *pcopied = 0;
|
|---|
| 95 |
|
|---|
| 96 | if ((from_fd = open(entp->fts_path, O_RDONLY | O_BINARY, 0)) == -1) {
|
|---|
| 97 | warn("%s", entp->fts_path);
|
|---|
| 98 | return (1);
|
|---|
| 99 | }
|
|---|
| 100 |
|
|---|
| 101 | fs = entp->fts_statp;
|
|---|
| 102 |
|
|---|
| 103 | /*
|
|---|
| 104 | * If the file exists and we're interactive, verify with the user.
|
|---|
| 105 | * If the file DNE, set the mode to be the from file, minus setuid
|
|---|
| 106 | * bits, modified by the umask; arguably wrong, but it makes copying
|
|---|
| 107 | * executables work right and it's been that way forever. (The
|
|---|
| 108 | * other choice is 666 or'ed with the execute bits on the from file
|
|---|
| 109 | * modified by the umask.)
|
|---|
| 110 | */
|
|---|
| 111 | if (!dne) {
|
|---|
| 112 | /* compare the files first if requested */
|
|---|
| 113 | if (changed_only) {
|
|---|
| 114 | if (cmp_fd_and_file(from_fd, entp->fts_path, to.p_path,
|
|---|
| 115 | 1 /* silent */, 0 /* lflag */,
|
|---|
| 116 | 0 /* special */) == OK_EXIT) {
|
|---|
| 117 | close(from_fd);
|
|---|
| 118 | return (0);
|
|---|
| 119 | }
|
|---|
| 120 | if (lseek(from_fd, 0, SEEK_SET) != 0) {
|
|---|
| 121 | close(from_fd);
|
|---|
| 122 | if ((from_fd = open(entp->fts_path, O_RDONLY | O_BINARY, 0)) == -1) {
|
|---|
| 123 | warn("%s", entp->fts_path);
|
|---|
| 124 | return (1);
|
|---|
| 125 | }
|
|---|
| 126 | }
|
|---|
| 127 | }
|
|---|
| 128 |
|
|---|
| 129 | #define YESNO "(y/n [n]) "
|
|---|
| 130 | if (nflag) {
|
|---|
| 131 | if (vflag)
|
|---|
| 132 | printf("%s not overwritten\n", to.p_path);
|
|---|
| 133 | return (0);
|
|---|
| 134 | } else if (iflag) {
|
|---|
| 135 | (void)fprintf(stderr, "overwrite %s? %s",
|
|---|
| 136 | to.p_path, YESNO);
|
|---|
| 137 | checkch = ch = getchar();
|
|---|
| 138 | while (ch != '\n' && ch != EOF)
|
|---|
| 139 | ch = getchar();
|
|---|
| 140 | if (checkch != 'y' && checkch != 'Y') {
|
|---|
| 141 | (void)close(from_fd);
|
|---|
| 142 | (void)fprintf(stderr, "not overwritten\n");
|
|---|
| 143 | return (1);
|
|---|
| 144 | }
|
|---|
| 145 | }
|
|---|
| 146 |
|
|---|
| 147 | if (fflag) {
|
|---|
| 148 | /* remove existing destination file name,
|
|---|
| 149 | * create a new file */
|
|---|
| 150 | (void)unlink(to.p_path);
|
|---|
| 151 | to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY,
|
|---|
| 152 | fs->st_mode & ~(S_ISUID | S_ISGID));
|
|---|
| 153 | } else
|
|---|
| 154 | /* overwrite existing destination file name */
|
|---|
| 155 | to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_BINARY, 0);
|
|---|
| 156 | } else
|
|---|
| 157 | to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY,
|
|---|
| 158 | fs->st_mode & ~(S_ISUID | S_ISGID));
|
|---|
| 159 |
|
|---|
| 160 | if (to_fd == -1) {
|
|---|
| 161 | warn("%s", to.p_path);
|
|---|
| 162 | (void)close(from_fd);
|
|---|
| 163 | return (1);
|
|---|
| 164 | }
|
|---|
| 165 |
|
|---|
| 166 | rval = 0;
|
|---|
| 167 | *pcopied = 1;
|
|---|
| 168 |
|
|---|
| 169 | /*
|
|---|
| 170 | * Mmap and write if less than 8M (the limit is so we don't totally
|
|---|
| 171 | * trash memory on big files. This is really a minor hack, but it
|
|---|
| 172 | * wins some CPU back.
|
|---|
| 173 | */
|
|---|
| 174 | #ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
|
|---|
| 175 | if (S_ISREG(fs->st_mode) && fs->st_size > 0 &&
|
|---|
| 176 | fs->st_size <= 8 * 1048576) {
|
|---|
| 177 | if ((p = mmap(NULL, (size_t)fs->st_size, PROT_READ,
|
|---|
| 178 | MAP_SHARED, from_fd, (off_t)0)) == MAP_FAILED) {
|
|---|
| 179 | warn("%s", entp->fts_path);
|
|---|
| 180 | rval = 1;
|
|---|
| 181 | } else {
|
|---|
| 182 | wtotal = 0;
|
|---|
| 183 | for (bufp = p, wresid = fs->st_size; ;
|
|---|
| 184 | bufp += wcount, wresid -= (size_t)wcount) {
|
|---|
| 185 | wcount = write(to_fd, bufp, wresid);
|
|---|
| 186 | wtotal += wcount;
|
|---|
| 187 | if (info) {
|
|---|
| 188 | info = 0;
|
|---|
| 189 | (void)fprintf(stderr,
|
|---|
| 190 | "%s -> %s %3d%%\n",
|
|---|
| 191 | entp->fts_path, to.p_path,
|
|---|
| 192 | cp_pct(wtotal, fs->st_size));
|
|---|
| 193 |
|
|---|
| 194 | }
|
|---|
| 195 | if (wcount >= (ssize_t)wresid || wcount <= 0)
|
|---|
| 196 | break;
|
|---|
| 197 | }
|
|---|
| 198 | if (wcount != (ssize_t)wresid) {
|
|---|
| 199 | warn("%s", to.p_path);
|
|---|
| 200 | rval = 1;
|
|---|
| 201 | }
|
|---|
| 202 | /* Some systems don't unmap on close(2). */
|
|---|
| 203 | if (munmap(p, fs->st_size) < 0) {
|
|---|
| 204 | warn("%s", entp->fts_path);
|
|---|
| 205 | rval = 1;
|
|---|
| 206 | }
|
|---|
| 207 | }
|
|---|
| 208 | } else
|
|---|
| 209 | #endif
|
|---|
| 210 | {
|
|---|
| 211 | wtotal = 0;
|
|---|
| 212 | while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
|
|---|
| 213 | for (bufp = buf, wresid = rcount; ;
|
|---|
| 214 | bufp += wcount, wresid -= wcount) {
|
|---|
| 215 | wcount = write(to_fd, bufp, wresid);
|
|---|
| 216 | wtotal += wcount;
|
|---|
| 217 | if (info) {
|
|---|
| 218 | info = 0;
|
|---|
| 219 | (void)fprintf(stderr,
|
|---|
| 220 | "%s -> %s %3d%%\n",
|
|---|
| 221 | entp->fts_path, to.p_path,
|
|---|
| 222 | cp_pct(wtotal, fs->st_size));
|
|---|
| 223 |
|
|---|
| 224 | }
|
|---|
| 225 | if (wcount >= (ssize_t)wresid || wcount <= 0)
|
|---|
| 226 | break;
|
|---|
| 227 | }
|
|---|
| 228 | if (wcount != (ssize_t)wresid) {
|
|---|
| 229 | warn("%s", to.p_path);
|
|---|
| 230 | rval = 1;
|
|---|
| 231 | break;
|
|---|
| 232 | }
|
|---|
| 233 | }
|
|---|
| 234 | if (rcount < 0) {
|
|---|
| 235 | warn("%s", entp->fts_path);
|
|---|
| 236 | rval = 1;
|
|---|
| 237 | }
|
|---|
| 238 | }
|
|---|
| 239 |
|
|---|
| 240 | /*
|
|---|
| 241 | * Don't remove the target even after an error. The target might
|
|---|
| 242 | * not be a regular file, or its attributes might be important,
|
|---|
| 243 | * or its contents might be irreplaceable. It would only be safe
|
|---|
| 244 | * to remove it if we created it and its length is 0.
|
|---|
| 245 | */
|
|---|
| 246 |
|
|---|
| 247 | if (pflag && setfile(fs, to_fd))
|
|---|
| 248 | rval = 1;
|
|---|
| 249 | (void)close(from_fd);
|
|---|
| 250 | if (close(to_fd)) {
|
|---|
| 251 | warn("%s", to.p_path);
|
|---|
| 252 | rval = 1;
|
|---|
| 253 | }
|
|---|
| 254 | return (rval);
|
|---|
| 255 | }
|
|---|
| 256 |
|
|---|
| 257 | int
|
|---|
| 258 | copy_link(const FTSENT *p, int exists)
|
|---|
| 259 | {
|
|---|
| 260 | int len;
|
|---|
| 261 | char llink[PATH_MAX];
|
|---|
| 262 |
|
|---|
| 263 | if ((len = readlink(p->fts_path, llink, sizeof(llink) - 1)) == -1) {
|
|---|
| 264 | warn("readlink: %s", p->fts_path);
|
|---|
| 265 | return (1);
|
|---|
| 266 | }
|
|---|
| 267 | llink[len] = '\0';
|
|---|
| 268 | if (exists && unlink(to.p_path)) {
|
|---|
| 269 | warn("unlink: %s", to.p_path);
|
|---|
| 270 | return (1);
|
|---|
| 271 | }
|
|---|
| 272 | if (symlink(llink, to.p_path)) {
|
|---|
| 273 | warn("symlink: %s", llink);
|
|---|
| 274 | return (1);
|
|---|
| 275 | }
|
|---|
| 276 | return (pflag ? setfile(p->fts_statp, -1) : 0);
|
|---|
| 277 | }
|
|---|
| 278 |
|
|---|
| 279 | int
|
|---|
| 280 | copy_fifo(struct stat *from_stat, int exists)
|
|---|
| 281 | {
|
|---|
| 282 | if (exists && unlink(to.p_path)) {
|
|---|
| 283 | warn("unlink: %s", to.p_path);
|
|---|
| 284 | return (1);
|
|---|
| 285 | }
|
|---|
| 286 | if (mkfifo(to.p_path, from_stat->st_mode)) {
|
|---|
| 287 | warn("mkfifo: %s", to.p_path);
|
|---|
| 288 | return (1);
|
|---|
| 289 | }
|
|---|
| 290 | return (pflag ? setfile(from_stat, -1) : 0);
|
|---|
| 291 | }
|
|---|
| 292 |
|
|---|
| 293 | int
|
|---|
| 294 | copy_special(struct stat *from_stat, int exists)
|
|---|
| 295 | {
|
|---|
| 296 | if (exists && unlink(to.p_path)) {
|
|---|
| 297 | warn("unlink: %s", to.p_path);
|
|---|
| 298 | return (1);
|
|---|
| 299 | }
|
|---|
| 300 | if (mknod(to.p_path, from_stat->st_mode, from_stat->st_rdev)) {
|
|---|
| 301 | warn("mknod: %s", to.p_path);
|
|---|
| 302 | return (1);
|
|---|
| 303 | }
|
|---|
| 304 | return (pflag ? setfile(from_stat, -1) : 0);
|
|---|
| 305 | }
|
|---|
| 306 |
|
|---|
| 307 | int
|
|---|
| 308 | setfile(struct stat *fs, int fd)
|
|---|
| 309 | {
|
|---|
| 310 | static struct timeval tv[2];
|
|---|
| 311 | struct stat ts;
|
|---|
| 312 | int rval, gotstat, islink, fdval;
|
|---|
| 313 |
|
|---|
| 314 | rval = 0;
|
|---|
| 315 | fdval = fd != -1;
|
|---|
| 316 | islink = !fdval && S_ISLNK(fs->st_mode);
|
|---|
| 317 | fs->st_mode &= S_ISUID | S_ISGID | S_ISVTX |
|
|---|
| 318 | S_IRWXU | S_IRWXG | S_IRWXO;
|
|---|
| 319 |
|
|---|
| 320 | #ifdef HAVE_ST_TIMESPEC
|
|---|
| 321 | TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
|
|---|
| 322 | TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
|
|---|
| 323 | #else
|
|---|
| 324 | tv[0].tv_sec = fs->st_atime;
|
|---|
| 325 | tv[1].tv_sec = fs->st_mtime;
|
|---|
| 326 | tv[0].tv_usec = tv[1].tv_usec = 0;
|
|---|
| 327 | #endif
|
|---|
| 328 | if (islink ? lutimes(to.p_path, tv) : utimes(to.p_path, tv)) {
|
|---|
| 329 | warn("%sutimes: %s", islink ? "l" : "", to.p_path);
|
|---|
| 330 | rval = 1;
|
|---|
| 331 | }
|
|---|
| 332 | if (fdval ? fstat(fd, &ts) :
|
|---|
| 333 | (islink ? lstat(to.p_path, &ts) : stat(to.p_path, &ts)))
|
|---|
| 334 | gotstat = 0;
|
|---|
| 335 | else {
|
|---|
| 336 | gotstat = 1;
|
|---|
| 337 | ts.st_mode &= S_ISUID | S_ISGID | S_ISVTX |
|
|---|
| 338 | S_IRWXU | S_IRWXG | S_IRWXO;
|
|---|
| 339 | }
|
|---|
| 340 | /*
|
|---|
| 341 | * Changing the ownership probably won't succeed, unless we're root
|
|---|
| 342 | * or POSIX_CHOWN_RESTRICTED is not set. Set uid/gid before setting
|
|---|
| 343 | * the mode; current BSD behavior is to remove all setuid bits on
|
|---|
| 344 | * chown. If chown fails, lose setuid/setgid bits.
|
|---|
| 345 | */
|
|---|
| 346 | if (!gotstat || fs->st_uid != ts.st_uid || fs->st_gid != ts.st_gid)
|
|---|
| 347 | if (fdval ? fchown(fd, fs->st_uid, fs->st_gid) :
|
|---|
| 348 | (islink ? lchown(to.p_path, fs->st_uid, fs->st_gid) :
|
|---|
| 349 | chown(to.p_path, fs->st_uid, fs->st_gid))) {
|
|---|
| 350 | if (errno != EPERM) {
|
|---|
| 351 | warn("chown: %s", to.p_path);
|
|---|
| 352 | rval = 1;
|
|---|
| 353 | }
|
|---|
| 354 | fs->st_mode &= ~(S_ISUID | S_ISGID);
|
|---|
| 355 | }
|
|---|
| 356 |
|
|---|
| 357 | if (!gotstat || fs->st_mode != ts.st_mode)
|
|---|
| 358 | if (fdval ? fchmod(fd, fs->st_mode) :
|
|---|
| 359 | (islink ? lchmod(to.p_path, fs->st_mode) :
|
|---|
| 360 | chmod(to.p_path, fs->st_mode))) {
|
|---|
| 361 | warn("chmod: %s", to.p_path);
|
|---|
| 362 | rval = 1;
|
|---|
| 363 | }
|
|---|
| 364 |
|
|---|
| 365 | #ifdef HAVE_ST_FLAGS
|
|---|
| 366 | if (!gotstat || fs->st_flags != ts.st_flags)
|
|---|
| 367 | if (fdval ?
|
|---|
| 368 | fchflags(fd, fs->st_flags) :
|
|---|
| 369 | (islink ? (errno = ENOSYS) :
|
|---|
| 370 | chflags(to.p_path, fs->st_flags))) {
|
|---|
| 371 | warn("chflags: %s", to.p_path);
|
|---|
| 372 | rval = 1;
|
|---|
| 373 | }
|
|---|
| 374 | #endif
|
|---|
| 375 |
|
|---|
| 376 | return (rval);
|
|---|
| 377 | }
|
|---|
| 378 |
|
|---|
