mv.c revision 1.27
1146011Snyan/* $NetBSD: mv.c,v 1.27 2001/09/16 21:53:55 wiz Exp $ */ 243561Skato 343561Skato/* 443561Skato * Copyright (c) 1989, 1993, 1994 543561Skato * The Regents of the University of California. All rights reserved. 643561Skato * 743561Skato * This code is derived from software contributed to Berkeley by 843561Skato * Ken Smith of The State University of New York at Buffalo. 943561Skato * 1043561Skato * Redistribution and use in source and binary forms, with or without 1143561Skato * modification, are permitted provided that the following conditions 1243561Skato * are met: 1343561Skato * 1. Redistributions of source code must retain the above copyright 1443561Skato * notice, this list of conditions and the following disclaimer. 1543561Skato * 2. Redistributions in binary form must reproduce the above copyright 1643561Skato * notice, this list of conditions and the following disclaimer in the 1743561Skato * documentation and/or other materials provided with the distribution. 1843561Skato * 3. All advertising materials mentioning features or use of this software 1943561Skato * must display the following acknowledgement: 2043561Skato * This product includes software developed by the University of 2143561Skato * California, Berkeley and its contributors. 2243561Skato * 4. Neither the name of the University nor the names of its contributors 2343561Skato * may be used to endorse or promote products derived from this software 2443561Skato * without specific prior written permission. 2543561Skato * 2643561Skato * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27119880Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2843561Skato * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2943561Skato * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30119880Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31119880Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32119880Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3343561Skato * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3443561Skato * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3543561Skato * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3643561Skato * SUCH DAMAGE. 3768358Snyan */ 3843561Skato 3943561Skato#include <sys/cdefs.h> 4043561Skato#ifndef lint 4143561Skato__COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\n\ 4243561Skato The Regents of the University of California. All rights reserved.\n"); 4343561Skato#endif /* not lint */ 4443561Skato 4543561Skato#ifndef lint 4643561Skato#if 0 4743561Skatostatic char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94"; 4843561Skato#else 4943561Skato__RCSID("$NetBSD: mv.c,v 1.27 2001/09/16 21:53:55 wiz Exp $"); 5043561Skato#endif 5143561Skato#endif /* not lint */ 5243561Skato 5385063Snyan#include <sys/param.h> 5485063Snyan#include <sys/time.h> 5585063Snyan#include <sys/wait.h> 5685063Snyan#include <sys/stat.h> 5768358Snyan 5843561Skato#include <err.h> 5943561Skato#include <errno.h> 6043561Skato#include <fcntl.h> 6143561Skato#include <grp.h> 6243561Skato#include <locale.h> 6343561Skato#include <pwd.h> 6443561Skato#include <stdio.h> 6543561Skato#include <stdlib.h> 6643561Skato#include <string.h> 6743561Skato#include <unistd.h> 6885063Snyan 6985063Snyan#include "pathnames.h" 7043561Skato 7143561Skatoint fflg, iflg; 7243561Skatoint stdin_ok; 7343561Skato 7443561Skatoint copy(char *, char *); 7543561Skatoint do_move(char *, char *); 7685065Snyanint fastcopy(char *, char *, struct stat *); 7785065Snyanvoid usage(void); 7885065Snyanint main(int, char *[]); 7985065Snyan 8085065Snyanint 8185065Snyanmain(int argc, char *argv[]) 8285065Snyan{ 8385065Snyan int baselen, ch, len, rval; 8485065Snyan char *p, *endp; 8585065Snyan struct stat sb; 8685065Snyan char path[MAXPATHLEN + 1]; 8785065Snyan 8885065Snyan setprogname(argv[0]); 8985065Snyan (void)setlocale(LC_ALL, ""); 9085065Snyan 9185065Snyan while ((ch = getopt(argc, argv, "if")) != -1) 9285065Snyan switch (ch) { 9343561Skato case 'i': 9485065Snyan fflg = 0; 9585065Snyan iflg = 1; 9685065Snyan break; 9785065Snyan case 'f': 9885065Snyan iflg = 0; 9985065Snyan fflg = 1; 10085065Snyan break; 10185065Snyan case '?': 10285065Snyan default: 10385065Snyan usage(); 10485065Snyan } 10585065Snyan argc -= optind; 10685065Snyan argv += optind; 10785065Snyan 10885065Snyan if (argc < 2) 10985065Snyan usage(); 11085065Snyan 11185065Snyan stdin_ok = isatty(STDIN_FILENO); 11285065Snyan 11385065Snyan /* 11443561Skato * If the stat on the target fails or the target isn't a directory, 11543561Skato * try the move. More than 2 arguments is an error in this case. 11643561Skato */ 11743561Skato if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) { 11843561Skato if (argc > 2) 11943561Skato usage(); 12043561Skato exit(do_move(argv[0], argv[1])); 12143561Skato } 12243561Skato 12343561Skato /* It's a directory, move each file into it. */ 12443561Skato (void)strcpy(path, argv[argc - 1]); 12543561Skato baselen = strlen(path); 12643561Skato endp = &path[baselen]; 12743561Skato *endp++ = '/'; 12843561Skato ++baselen; 12943561Skato for (rval = 0; --argc; ++argv) { 13043561Skato p = *argv + strlen(*argv) - 1; 13143561Skato while (*p == '/' && p != *argv) 13243561Skato *p-- = '\0'; 13343561Skato if ((p = strrchr(*argv, '/')) == NULL) 13443561Skato p = *argv; 13543561Skato else 13643561Skato ++p; 13743561Skato 13843561Skato if ((baselen + (len = strlen(p))) >= MAXPATHLEN) { 13943561Skato warnx("%s: destination pathname too long", *argv); 14043561Skato rval = 1; 14143561Skato } else { 14243561Skato memmove(endp, p, len + 1); 14343561Skato if (do_move(*argv, path)) 14443561Skato rval = 1; 145146011Snyan } 14643561Skato } 14743561Skato exit(rval); 14885061Snyan /* NOTREACHED */ 14943561Skato} 15043561Skato 15185061Snyanint 15285061Snyando_move(char *from, char *to) 15343561Skato{ 15485061Snyan struct stat sb; 15585061Snyan char modep[15]; 15643561Skato 15743561Skato /* 15843561Skato * (1) If the destination path exists, the -f option is not specified 15943561Skato * and either of the following conditions are true: 16043561Skato * 16143561Skato * (a) The permissions of the destination path do not permit 16243561Skato * writing and the standard input is a terminal. 16343561Skato * (b) The -i option is specified. 16443561Skato * 16543561Skato * the mv utility shall write a prompt to standard error and 16685061Snyan * read a line from standard input. If the response is not 16785063Snyan * affirmative, mv shall do nothing more with the current 16885063Snyan * source file... 16943561Skato */ 17085061Snyan if (!fflg && !access(to, F_OK)) { 17185061Snyan int ask = 1; 17285061Snyan int ch; 17343561Skato 17443561Skato if (iflg) { 17543561Skato if (access(from, F_OK)) { 17654086Snyan warn("rename %s", from); 17754086Snyan return (1); 17885061Snyan } 17954086Snyan (void)fprintf(stderr, "overwrite %s? ", to); 18054086Snyan } else if (stdin_ok && access(to, W_OK) && !stat(to, &sb)) { 18154086Snyan if (access(from, F_OK)) { 18254086Snyan warn("rename %s", from); 18354086Snyan return (1); 18454086Snyan } 18554086Snyan strmode(sb.st_mode, modep); 18643561Skato (void)fprintf(stderr, "override %s%s%s/%s for %s? ", 18743561Skato modep + 1, modep[9] == ' ' ? "" : " ", 18843561Skato user_from_uid(sb.st_uid, 0), 18943561Skato group_from_gid(sb.st_gid, 0), to); 19043561Skato } else 19143561Skato ask = 0; 19243561Skato if (ask) { 19343561Skato if ((ch = getchar()) != EOF && ch != '\n') 19443561Skato while (getchar() != '\n'); 19543561Skato if (ch != 'y' && ch != 'Y') 19643561Skato return (0); 19743561Skato } 19843561Skato } 19943561Skato 20043561Skato /* 20143561Skato * (2) If rename() succeeds, mv shall do nothing more with the 20243561Skato * current source file. If it fails for any other reason than 20343561Skato * EXDEV, mv shall write a diagnostic message to the standard 20443561Skato * error and do nothing more with the current source file. 20543561Skato * 20643561Skato * (3) If the destination path exists, and it is a file of type 20743561Skato * directory and source_file is not a file of type directory, 20843561Skato * or it is a file not of type directory, and source file is 20943561Skato * a file of type directory, mv shall write a diagnostic 21043561Skato * message to standard error, and do nothing more with the 21143561Skato * current source file... 21243561Skato */ 21343561Skato if (!rename(from, to)) 21485061Snyan return (0); 21543561Skato 21643561Skato if (errno != EXDEV) { 21743561Skato warn("rename %s to %s", from, to); 21843561Skato return (1); 21943561Skato } 22043561Skato 22143561Skato /* 22243561Skato * (4) If the destination path exists, mv shall attempt to remove it. 22385061Snyan * If this fails for any reason, mv shall write a diagnostic 22443561Skato * message to the standard error and do nothing more with the 22543561Skato * current source file... 22643561Skato */ 22743561Skato if (!lstat(to, &sb)) { 22843561Skato if ((S_ISDIR(sb.st_mode)) ? rmdir(to) : unlink(to)) { 22954086Snyan warn("can't remove %s", to); 23043561Skato return (1); 23143561Skato } 23243561Skato } 23343561Skato 23443561Skato /* 23543561Skato * (5) The file hierarchy rooted in source_file shall be duplicated 23685061Snyan * as a file hierarchy rooted in the destination path... 23743561Skato */ 23843561Skato if (lstat(from, &sb)) { 23943561Skato warn("%s", from); 24043561Skato return (1); 24143561Skato } 24243561Skato return (S_ISREG(sb.st_mode) ? 24343561Skato fastcopy(from, to, &sb) : copy(from, to)); 24485061Snyan} 24585061Snyan 24643561Skatoint 24785061Snyanfastcopy(char *from, char *to, struct stat *sbp) 24885061Snyan{ 24985061Snyan struct timeval tval[2]; 25043561Skato static u_int blen; 25185061Snyan static char *bp; 25285061Snyan int nread, from_fd, to_fd; 25385061Snyan 25485061Snyan if ((from_fd = open(from, O_RDONLY, 0)) < 0) { 25585061Snyan warn("%s", from); 25685061Snyan return (1); 25785061Snyan } 25885061Snyan if ((to_fd = 25943561Skato open(to, O_CREAT | O_TRUNC | O_WRONLY, sbp->st_mode)) < 0) { 26085061Snyan warn("%s", to); 26185061Snyan (void)close(from_fd); 26285061Snyan return (1); 26385061Snyan } 26443561Skato if (!blen && !(bp = malloc(blen = sbp->st_blksize))) { 26585061Snyan warn(NULL); 26685061Snyan return (1); 26743561Skato } 26885061Snyan while ((nread = read(from_fd, bp, blen)) > 0) 26985061Snyan if (write(to_fd, bp, nread) != nread) { 27085061Snyan warn("%s", to); 27185061Snyan goto err; 27285061Snyan } 27385061Snyan if (nread < 0) { 27485061Snyan warn("%s", from); 27585061Snyanerr: if (unlink(to)) 27685061Snyan warn("%s: remove", to); 27785061Snyan (void)close(from_fd); 27885061Snyan (void)close(to_fd); 27943561Skato return (1); 28085061Snyan } 28143561Skato (void)close(from_fd); 28243561Skato#ifdef BSD4_4 28343561Skato TIMESPEC_TO_TIMEVAL(&tval[0], &sbp->st_atimespec); 28443561Skato TIMESPEC_TO_TIMEVAL(&tval[1], &sbp->st_mtimespec); 28543561Skato#else 28643561Skato tval[0].tv_sec = sbp->st_atime; 28743561Skato tval[1].tv_sec = sbp->st_mtime; 28843561Skato tval[0].tv_usec = 0; 28943561Skato tval[1].tv_usec = 0; 29043561Skato#endif 29143561Skato#ifdef __SVR4 29243561Skato if (utimes(to, tval)) 29385061Snyan#else 29443561Skato if (futimes(to_fd, tval)) 29543561Skato#endif 29643561Skato warn("%s: set times", to); 29743561Skato if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) { 29843561Skato if (errno != EPERM) 29943561Skato warn("%s: set owner/group", to); 30043561Skato sbp->st_mode &= ~(S_ISUID | S_ISGID); 30143561Skato } 30243561Skato if (fchmod(to_fd, sbp->st_mode)) 30385061Snyan warn("%s: set mode", to); 30485061Snyan if (fchflags(to_fd, sbp->st_flags) && (errno != EOPNOTSUPP)) 30543561Skato warn("%s: set flags (was: 0%07o)", to, sbp->st_flags); 30643561Skato 30743561Skato if (close(to_fd)) { 30843561Skato warn("%s", to); 30943561Skato return (1); 31043561Skato } 31185061Snyan 31285061Snyan if (unlink(from)) { 31385063Snyan warn("%s: remove", from); 31485061Snyan return (1); 31585061Snyan } 31643561Skato return (0); 31743561Skato} 31843561Skato 31943561Skatoint 32043561Skatocopy(char *from, char *to) 32143561Skato{ 32243561Skato int pid, status; 32343561Skato 32468358Snyan if ((pid = vfork()) == 0) { 32543561Skato execl(_PATH_CP, "mv", "-PRp", from, to, NULL); 32685061Snyan warn("%s", _PATH_CP); 32785061Snyan _exit(1); 32843561Skato } 32985061Snyan if (waitpid(pid, &status, 0) == -1) { 33085061Snyan warn("%s: waitpid", _PATH_CP); 33185061Snyan return (1); 33285061Snyan } 33385061Snyan if (!WIFEXITED(status)) { 33485061Snyan warn("%s: did not terminate normally", _PATH_CP); 33585061Snyan return (1); 33685061Snyan } 33785061Snyan if (WEXITSTATUS(status)) { 33885061Snyan warn("%s: terminated with %d (non-zero) status", 33985061Snyan _PATH_CP, WEXITSTATUS(status)); 34043561Skato return (1); 34143561Skato } 34243561Skato if (!(pid = vfork())) { 34343561Skato execl(_PATH_RM, "mv", "-rf", from, NULL); 34468358Snyan warn("%s", _PATH_RM); 34543561Skato _exit(1); 34685061Snyan } 347124647Snyan if (waitpid(pid, &status, 0) == -1) { 34885061Snyan warn("%s: waitpid", _PATH_RM); 34943561Skato return (1); 35043561Skato } 35143561Skato if (!WIFEXITED(status)) { 35243561Skato warn("%s: did not terminate normally", _PATH_RM); 35343561Skato return (1); 35443561Skato } 35543561Skato if (WEXITSTATUS(status)) { 35643561Skato warn("%s: terminated with %d (non-zero) status", 35743561Skato _PATH_RM, WEXITSTATUS(status)); 35843561Skato return (1); 35943561Skato } 36043561Skato return (0); 36143561Skato} 36285063Snyan 36385061Snyanvoid 36443561Skatousage(void) 36585063Snyan{ 36685063Snyan (void)fprintf(stderr, "usage: %s [-fi] source target\n" 36785063Snyan " %s [-fi] source ... directory\n", getprogname(), 36843561Skato getprogname()); 36985063Snyan exit(1); 37043561Skato /* NOTREACHED */ 37143561Skato} 37243561Skato