1 /* vi: set sw=4 ts=4: */
3 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 void data_extract_all(archive_handle_t *archive_handle)
11 file_header_t *file_header = archive_handle->file_header;
15 if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
16 char *name = xstrdup(file_header->name);
17 bb_make_directory(dirname(name), -1, FILEUTILS_RECUR);
21 /* Check if the file already exists */
22 if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
23 /* Remove the existing entry if it exists */
24 if (((file_header->mode & S_IFMT) != S_IFDIR)
25 && (unlink(file_header->name) == -1)
28 bb_perror_msg_and_die("cannot remove old file");
31 else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) {
32 /* Remove the existing entry if its older than the extracted entry */
34 if (lstat(file_header->name, &statbuf) == -1) {
35 if (errno != ENOENT) {
36 bb_perror_msg_and_die("cannot stat old file");
39 else if (statbuf.st_mtime <= file_header->mtime) {
40 if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
41 bb_error_msg("%s not created: newer or "
42 "same age file exists", file_header->name);
44 data_skip(archive_handle);
47 else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) {
48 bb_perror_msg_and_die("cannot remove old file %s",
53 /* Handle hard links separately
54 * We identified hard links as regular files of size 0 with a symlink */
55 if (S_ISREG(file_header->mode) && (file_header->link_name)
56 && (file_header->size == 0)
59 res = link(file_header->link_name, file_header->name);
60 if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
61 bb_perror_msg("cannot create hard link");
64 /* Create the filesystem entry */
65 switch (file_header->mode & S_IFMT) {
68 dst_fd = xopen3(file_header->name, O_WRONLY | O_CREAT | O_EXCL,
70 bb_copyfd_exact_size(archive_handle->src_fd, dst_fd, file_header->size);
75 res = mkdir(file_header->name, file_header->mode);
76 if ((errno != EISDIR) && (res == -1)
77 && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)
79 bb_perror_msg("extract_archive: %s", file_header->name);
84 res = symlink(file_header->link_name, file_header->name);
86 && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)
88 bb_perror_msg("cannot create symlink "
91 file_header->link_name);
98 res = mknod(file_header->name, file_header->mode, file_header->device);
100 && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)
102 bb_perror_msg("cannot create node %s", file_header->name);
106 bb_error_msg_and_die("unrecognized file type");
110 if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_OWN)) {
111 lchown(file_header->name, file_header->uid, file_header->gid);
113 /* uclibc has no lchmod, glibc is even stranger -
114 * it has lchmod which seems to do nothing!
115 * so we use chmod... */
116 if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_PERM)
117 && (file_header->mode & S_IFMT) != S_IFLNK
119 chmod(file_header->name, file_header->mode);
122 if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
124 t.actime = t.modtime = file_header->mtime;
125 utime(file_header->name, &t);