/* vi: set sw=4 ts=4: */ /* * Mini mv implementation for busybox * * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu> * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp> * * 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. //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-$(CONFIG_MV) += mv.o //usage:#define mv_trivial_usage //usage: "[-fin] SOURCE DEST\n" //usage: "or: mv [-fin] SOURCE... DIRECTORY" //usage:#define mv_full_usage "\n\n" //usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n" //usage: "\n -f Don't prompt before overwriting" //usage: "\n -i Interactive, prompt before overwrite" //usage: "\n -n Don't overwrite an existing file" //usage: //usage:#define mv_example_usage //usage: "$ mv /tmp/foo /bin/bar\n" #include "libbb.h" #include "libcoreutils/coreutils.h" 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]; if (argc == 2) { dest_exists = cp_mv_stat(last, &dest_stat); if (dest_exists < 0) { return EXIT_FAILURE; } if (!(dest_exists & 2)) { /* last is not a directory */ dest = last; goto DO_MOVE; } } 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; } 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; } } } 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; }