diff options
Diffstat (limited to 'cp.c')
| -rw-r--r-- | cp.c | 114 |
1 files changed, 114 insertions, 0 deletions
@@ -0,0 +1,114 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini cp implementation for busybox + * + * + * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu> + * + * 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 + * + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> +#include <utime.h> +#include <errno.h> +#include <dirent.h> +#include <stdlib.h> + +#include "busybox.h" + +extern int cp_main(int argc, char **argv) +{ + int status = 0; + int opt; + int flags = 0; + int i; + + while ((opt = getopt(argc, argv, "adfipR")) != -1) + switch (opt) { + case 'a': + flags |= CP_PRESERVE_STATUS | CP_RECUR; + /* fallthrough */ + case 'd': + flags |= CP_PRESERVE_SYMLINKS; + break; + case 'f': + flags |= CP_FORCE; + break; + case 'i': + flags |= CP_INTERACTIVE; + break; + case 'p': + flags |= CP_PRESERVE_STATUS; + break; + case 'R': + flags |= CP_RECUR; + break; + default: + show_usage(); + } + + if (optind + 2 > argc) + show_usage(); + + /* If there are only two arguments and... */ + if (optind + 2 == argc) { + struct stat source_stat; + struct stat dest_stat; + int source_exists = 1; + int dest_exists = 1; + + if (((flags & CP_PRESERVE_SYMLINKS) && + lstat(argv[optind], &source_stat) < 0) || + (!(flags & CP_PRESERVE_SYMLINKS) && + stat(argv[optind], &source_stat))) { + if (errno != ENOENT) + perror_msg_and_die("unable to stat `%s'", argv[optind]); + source_exists = 0; + } + + if (stat(argv[optind + 1], &dest_stat) < 0) { + if (errno != ENOENT) + perror_msg_and_die("unable to stat `%s'", argv[optind + 1]); + dest_exists = 0; + } + + /* ...if neither is a directory or... */ + if (((!source_exists || !S_ISDIR(source_stat.st_mode)) && + (!dest_exists || !S_ISDIR(dest_stat.st_mode))) || + /* ...recursing, the first is a directory, and the + * second doesn't exist, then... */ + ((flags & CP_RECUR) && S_ISDIR(source_stat.st_mode) && + !dest_exists)) { + /* ...do a simple copy. */ + if (copy_file(argv[optind], argv[optind + 1], flags) < 0) + status = 1; + return status; + } + } + + for (i = optind; i < argc - 1; i++) { + char *dest = concat_path_file(argv[argc - 1], + get_last_path_component(argv[i])); + if (copy_file(argv[i], dest, flags) < 0) + status = 1; + free(dest); + } + + return status; +} |