2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 #include <sys/types.h>
28 #include "unarchive.h"
30 void data_extract_all(archive_handle_t *archive_handle)
32 file_header_t *file_header = archive_handle->file_header;
36 if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
37 char *name = bb_xstrdup(file_header->name);
38 bb_make_directory (dirname(name), -1, FILEUTILS_RECUR);
42 /* Check if the file already exists */
43 if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
44 /* Remove the existing entry if it exists */
45 if (((file_header->mode & S_IFMT) != S_IFDIR) && (unlink(file_header->name) == -1) && (errno != ENOENT)) {
46 bb_perror_msg_and_die("Couldnt remove old file");
49 else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) {
50 /* Remove the existing entry if its older than the extracted entry */
52 if (lstat(file_header->name, &statbuf) == -1) {
53 if (errno != ENOENT) {
54 bb_perror_msg_and_die("Couldnt stat old file");
57 else if (statbuf.st_mtime <= file_header->mtime) {
58 if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
59 bb_error_msg("%s not created: newer or same age file exists", file_header->name);
61 data_skip(archive_handle);
64 else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) {
65 bb_perror_msg_and_die("Couldnt remove old file %s", file_header->name);
69 /* Handle hard links separately
70 * We identified hard links as regular files of size 0 with a symlink */
71 if (S_ISREG(file_header->mode) && (file_header->link_name) && (file_header->size == 0)) {
73 res = link(file_header->link_name, file_header->name);
74 if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
75 bb_perror_msg("Couldnt create hard link");
78 /* Create the filesystem entry */
79 switch(file_header->mode & S_IFMT) {
82 dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL);
83 bb_copyfd_size(archive_handle->src_fd, dst_fd, file_header->size);
88 res = mkdir(file_header->name, file_header->mode);
89 if ((errno != EISDIR) && (res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
90 bb_perror_msg("extract_archive: %s", file_header->name);
95 res = symlink(file_header->link_name, file_header->name);
96 if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
97 bb_perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name);
104 res = mknod(file_header->name, file_header->mode, file_header->device);
105 if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
106 bb_perror_msg("Cannot create node %s", file_header->name);
110 bb_error_msg_and_die("Unrecognised file type");
114 if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_OWN)) {
115 lchown(file_header->name, file_header->uid, file_header->gid);
117 if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_PERM) &&
118 (file_header->mode & S_IFMT) != S_IFLNK)
120 chmod(file_header->name, file_header->mode);
123 if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
125 t.actime = t.modtime = file_header->mtime;
126 utime(file_header->name, &t);