1 /* vi: set sw=4 ts=4: */
3 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 void FAST_FUNC data_extract_all(archive_handle_t *archive_handle)
11 file_header_t *file_header = archive_handle->file_header;
15 if (archive_handle->ah_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->ah_flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
23 /* Remove the 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 %s",
32 else if (archive_handle->ah_flags & ARCHIVE_EXTRACT_NEWER) {
33 /* Remove the existing entry if its older than the extracted entry */
35 if (lstat(file_header->name, &statbuf) == -1) {
36 if (errno != ENOENT) {
37 bb_perror_msg_and_die("cannot stat old file");
40 else if (statbuf.st_mtime <= file_header->mtime) {
41 if (!(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)) {
42 bb_error_msg("%s not created: newer or "
43 "same age file exists", file_header->name);
45 data_skip(archive_handle);
48 else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) {
49 bb_perror_msg_and_die("cannot remove old file %s",
54 /* Handle hard links separately
55 * We identified hard links as regular files of size 0 with a symlink */
56 if (S_ISREG(file_header->mode) && (file_header->link_target)
57 && (file_header->size == 0)
60 res = link(file_header->link_target, file_header->name);
61 if ((res == -1) && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)) {
62 bb_perror_msg("cannot create %slink "
63 "from %s to %s", "hard",
65 file_header->link_target);
68 /* Create the filesystem entry */
69 switch (file_header->mode & S_IFMT) {
72 dst_fd = xopen3(file_header->name, O_WRONLY | O_CREAT | O_EXCL,
74 bb_copyfd_exact_size(archive_handle->src_fd, dst_fd, file_header->size);
79 res = mkdir(file_header->name, file_header->mode);
80 if ((res == -1) && (errno != EISDIR)
81 && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
83 bb_perror_msg("cannot make dir %s", file_header->name);
88 res = symlink(file_header->link_target, file_header->name);
90 && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
92 bb_perror_msg("cannot create %slink "
93 "from %s to %s", "sym",
95 file_header->link_target);
102 res = mknod(file_header->name, file_header->mode, file_header->device);
104 && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)
106 bb_perror_msg("cannot create node %s", file_header->name);
110 bb_error_msg_and_die("unrecognized file type");
114 if (!(archive_handle->ah_flags & ARCHIVE_NOPRESERVE_OWN)) {
115 #if ENABLE_FEATURE_TAR_UNAME_GNAME
116 uid_t uid = file_header->uid;
117 gid_t gid = file_header->gid;
119 if (file_header->uname) {
120 struct passwd *pwd = getpwnam(file_header->uname);
121 if (pwd) uid = pwd->pw_uid;
123 if (file_header->gname) {
124 struct group *grp = getgrnam(file_header->gname);
125 if (grp) gid = grp->gr_gid;
127 lchown(file_header->name, uid, gid);
129 lchown(file_header->name, file_header->uid, file_header->gid);
132 if ((file_header->mode & S_IFMT) != S_IFLNK) {
133 /* uclibc has no lchmod, glibc is even stranger -
134 * it has lchmod which seems to do nothing!
135 * so we use chmod... */
136 if (!(archive_handle->ah_flags & ARCHIVE_NOPRESERVE_PERM)) {
137 chmod(file_header->name, file_header->mode);
140 if (archive_handle->ah_flags & ARCHIVE_PRESERVE_DATE) {
142 t.actime = t.modtime = file_header->mtime;
143 utime(file_header->name, &t);