busybox/cp.c

115 lines
2.9 KiB
C

/* 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 = FILEUTILS_DEREFERENCE;
int i;
while ((opt = getopt(argc, argv, "adfipR")) != -1)
switch (opt) {
case 'a':
flags |= FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR;
/* fallthrough */
case 'd':
flags &= ~FILEUTILS_DEREFERENCE;
break;
case 'f':
flags |= FILEUTILS_FORCE;
break;
case 'i':
flags |= FILEUTILS_INTERACTIVE;
break;
case 'p':
flags |= FILEUTILS_PRESERVE_STATUS;
break;
case 'R':
flags |= FILEUTILS_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 & FILEUTILS_DEREFERENCE) &&
lstat(argv[optind], &source_stat) < 0) ||
((flags & FILEUTILS_DEREFERENCE) &&
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 & FILEUTILS_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;
}