2006-07-03 01:17:05 +05:30
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/* vi: set sw=4 ts=4: */
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2002-11-03 19:35:15 +05:30
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/*
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2006-07-12 13:26:04 +05:30
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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2002-11-03 19:35:15 +05:30
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*/
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2002-09-25 08:17:48 +05:30
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#include <sys/types.h>
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2002-11-03 19:35:15 +05:30
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2002-09-25 08:17:48 +05:30
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <utime.h>
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#include <unistd.h>
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#include <stdlib.h>
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2002-11-03 19:35:15 +05:30
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2002-09-25 08:17:48 +05:30
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#include "libbb.h"
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#include "unarchive.h"
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2006-03-07 02:17:33 +05:30
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void data_extract_all(archive_handle_t *archive_handle)
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2002-09-25 08:17:48 +05:30
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{
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file_header_t *file_header = archive_handle->file_header;
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int dst_fd;
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int res;
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if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
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2003-03-19 14:43:01 +05:30
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char *name = bb_xstrdup(file_header->name);
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2004-10-13 11:55:52 +05:30
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bb_make_directory (dirname(name), -1, FILEUTILS_RECUR);
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2002-10-01 01:44:57 +05:30
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free(name);
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2004-03-15 13:59:22 +05:30
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}
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2002-09-25 08:17:48 +05:30
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2003-08-29 00:42:23 +05:30
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/* Check if the file already exists */
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if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
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/* Remove the existing entry if it exists */
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2003-11-20 13:30:38 +05:30
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if (((file_header->mode & S_IFMT) != S_IFDIR) && (unlink(file_header->name) == -1) && (errno != ENOENT)) {
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2003-08-29 00:42:23 +05:30
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bb_perror_msg_and_die("Couldnt remove old file");
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}
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}
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else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) {
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/* Remove the existing entry if its older than the extracted entry */
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struct stat statbuf;
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2003-11-16 05:14:31 +05:30
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if (lstat(file_header->name, &statbuf) == -1) {
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if (errno != ENOENT) {
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bb_perror_msg_and_die("Couldnt stat old file");
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}
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2003-08-29 00:42:23 +05:30
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}
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2003-11-16 05:14:31 +05:30
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else if (statbuf.st_mtime <= file_header->mtime) {
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2003-08-29 00:42:23 +05:30
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if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_error_msg("%s not created: newer or same age file exists", file_header->name);
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}
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data_skip(archive_handle);
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return;
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}
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2003-11-16 05:14:31 +05:30
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else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) {
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bb_perror_msg_and_die("Couldnt remove old file %s", file_header->name);
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2003-08-29 00:42:23 +05:30
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}
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}
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2004-04-14 23:21:38 +05:30
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/* Handle hard links separately
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2003-11-27 05:31:43 +05:30
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* We identified hard links as regular files of size 0 with a symlink */
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if (S_ISREG(file_header->mode) && (file_header->link_name) && (file_header->size == 0)) {
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2003-08-14 08:25:15 +05:30
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/* hard link */
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res = link(file_header->link_name, file_header->name);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("Couldnt create hard link");
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}
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} else {
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/* Create the filesystem entry */
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switch(file_header->mode & S_IFMT) {
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case S_IFREG: {
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2002-09-25 08:17:48 +05:30
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/* Regular file */
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2003-04-21 16:33:29 +05:30
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dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL);
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2003-11-22 03:54:57 +05:30
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bb_copyfd_size(archive_handle->src_fd, dst_fd, file_header->size);
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2002-09-25 08:17:48 +05:30
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close(dst_fd);
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2003-08-14 08:25:15 +05:30
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break;
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}
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case S_IFDIR:
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res = mkdir(file_header->name, file_header->mode);
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2003-11-16 05:14:31 +05:30
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if ((errno != EISDIR) && (res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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2003-08-14 08:25:15 +05:30
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bb_perror_msg("extract_archive: %s", file_header->name);
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}
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break;
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case S_IFLNK:
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/* Symlink */
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res = symlink(file_header->link_name, file_header->name);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name);
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}
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break;
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case S_IFSOCK:
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case S_IFBLK:
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case S_IFCHR:
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case S_IFIFO:
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res = mknod(file_header->name, file_header->mode, file_header->device);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("Cannot create node %s", file_header->name);
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}
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break;
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default:
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bb_error_msg_and_die("Unrecognised file type");
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2002-09-25 08:17:48 +05:30
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}
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}
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2005-10-28 04:19:08 +05:30
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if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_OWN)) {
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lchown(file_header->name, file_header->uid, file_header->gid);
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}
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if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_PERM) &&
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(file_header->mode & S_IFMT) != S_IFLNK)
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{
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2003-12-21 14:29:24 +05:30
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chmod(file_header->name, file_header->mode);
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}
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2002-09-25 08:17:48 +05:30
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if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
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struct utimbuf t;
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t.actime = t.modtime = file_header->mtime;
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utime(file_header->name, &t);
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}
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}
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