X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fmv.c;h=b9f8f698255aef3152025eed64dbd099cf68b495;hb=16bcd504a32e6a7bf2015ffb241133f9ead6100b;hp=e502250eca3b4379c4bb12a711113fe19509d968;hpb=c49960189a04b73e033016bd0f43fbb950f800e1;p=oweals%2Fbusybox.git diff --git a/coreutils/mv.c b/coreutils/mv.c index e502250ec..b9f8f6982 100644 --- a/coreutils/mv.c +++ b/coreutils/mv.c @@ -1,80 +1,165 @@ +/* vi: set sw=4 ts=4: */ /* * Mini mv implementation for busybox * + * Copyright (C) 2000 by Matt Kraai + * SELinux support by Yuichi Nakamura * - * Copyright (C) 1999 by Lineo, inc. - * Written by Erik Andersen , - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Licensed under GPLv2 or later, see file LICENSE in this source tree. + */ +/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) * + * Size reduction and improved error checking. */ +//config:config MV +//config: bool "mv (10 kb)" +//config: default y +//config: help +//config: mv is used to move or rename files or directories. -#include "internal.h" -#include -#include -#include -#include +//applet:IF_MV(APPLET_NOEXEC(mv, mv, BB_DIR_BIN, BB_SUID_DROP, mv)) +/* NOEXEC despite cases when it can be a "runner" (mv LARGE_DIR OTHER_FS) */ +//kbuild:lib-$(CONFIG_MV) += mv.o -static const char mv_usage[] = "mv SOURCE DEST\n" -" or: mv SOURCE... DIRECTORY\n" -"Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.\n"; +//usage:#define mv_trivial_usage +//usage: "[-fin] SOURCE DEST\n" +//usage: "or: mv [-fin] SOURCE... DIRECTORY" +//usage:#define mv_full_usage "\n\n" +//usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n" +//usage: "\n -f Don't prompt before overwriting" +//usage: "\n -i Interactive, prompt before overwrite" +//usage: "\n -n Don't overwrite an existing file" +//usage: +//usage:#define mv_example_usage +//usage: "$ mv /tmp/foo /bin/bar\n" +#include "libbb.h" +#include "libcoreutils/coreutils.h" -static const char *srcName; -static const char *destName; -static const char *skipName; -static int dirFlag = FALSE; +int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int mv_main(int argc, char **argv) +{ + struct stat dest_stat; + const char *last; + const char *dest; + unsigned flags; + int dest_exists; + int status = 0; + int copy_flag = 0; +#define OPT_FORCE (1 << 0) +#define OPT_INTERACTIVE (1 << 1) +#define OPT_NOCLOBBER (1 << 2) +#define OPT_VERBOSE ((1 << 3) * ENABLE_FEATURE_VERBOSE) + /* Need at least two arguments. + * If more than one of -f, -i, -n is specified , only the final one + * takes effect (it unsets previous options). + */ + flags = getopt32long(argv, "^" + "finv" + "\0" + "-2:f-in:i-fn:n-fi", + "interactive\0" No_argument "i" + "force\0" No_argument "f" + "no-clobber\0" No_argument "n" + IF_FEATURE_VERBOSE( + "verbose\0" No_argument "v" + ) + ); + argc -= optind; + argv += optind; + last = argv[argc - 1]; -extern int mv_main(int argc, char **argv) -{ - char newdestName[NAME_MAX]; + if (argc == 2) { + dest_exists = cp_mv_stat(last, &dest_stat); + if (dest_exists < 0) { + return EXIT_FAILURE; + } - if (argc < 3) { - usage (mv_usage); - } - argc--; - argv++; + if (!(dest_exists & 2)) { /* last is not a directory */ + dest = last; + goto DO_MOVE; + } + } - destName = argv[argc - 1]; - dirFlag = isDirectory(destName); + do { + dest = concat_path_file(last, bb_get_last_path_component_strip(*argv)); + dest_exists = cp_mv_stat(dest, &dest_stat); + if (dest_exists < 0) { + goto RET_1; + } - if ((argc > 3) && dirFlag==FALSE) { - fprintf(stderr, "%s: not a directory\n", destName); - exit (FALSE); - } + DO_MOVE: + if (dest_exists) { + if (flags & OPT_NOCLOBBER) + goto RET_0; + if (!(flags & OPT_FORCE) + && ((access(dest, W_OK) < 0 && isatty(0)) + || (flags & OPT_INTERACTIVE)) + ) { + if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) { + goto RET_1; /* Ouch! fprintf failed! */ + } + if (!bb_ask_y_confirmation()) { + goto RET_0; + } + } + } - while (argc-- > 1) { - srcName = *(argv++); - skipName = strrchr(srcName, '/'); - if (skipName) - skipName++; - strcpy(newdestName, destName); - if (dirFlag==TRUE) { - strcat(newdestName, "/"); - if ( skipName != NULL) - strcat(newdestName, strstr(srcName, skipName)); - } - if (copyFile(srcName, newdestName, FALSE, FALSE) == FALSE) { - exit( FALSE); - } - if (unlink (srcName) < 0) { - perror (srcName); - exit( FALSE); - } - } - exit( TRUE); + if (rename(*argv, dest) < 0) { + struct stat source_stat; + int source_exists; + + if (errno != EXDEV + || (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1 + ) { + bb_perror_msg("can't rename '%s'", *argv); + } else { + static const char fmt[] ALIGN1 = + "can't overwrite %sdirectory with %sdirectory"; + + if (dest_exists) { + if (dest_exists == 3) { + if (source_exists != 3) { + bb_error_msg(fmt, "", "non-"); + goto RET_1; + } + } else { + if (source_exists == 3) { + bb_error_msg(fmt, "non-", ""); + goto RET_1; + } + } + if (unlink(dest) < 0) { + bb_perror_msg("can't remove '%s'", dest); + goto RET_1; + } + } + /* FILEUTILS_RECUR also prevents nasties like + * "read from device and write contents to dst" + * instead of "create same device node" */ + copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS; +#if ENABLE_SELINUX + copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT; +#endif + if ((copy_file(*argv, dest, copy_flag) >= 0) + && (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0) + ) { + goto RET_0; + } + } + RET_1: + status = 1; + } + RET_0: + if (flags & OPT_VERBOSE) { + printf("'%s' -> '%s'\n", *argv, dest); + } + if (dest != last) { + free((void *) dest); + } + } while (*++argv != last); + + return status; }