diff options
Diffstat (limited to 'archival/libunarchive/data_extract_all.c')
| -rw-r--r-- | archival/libunarchive/data_extract_all.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/archival/libunarchive/data_extract_all.c b/archival/libunarchive/data_extract_all.c deleted file mode 100644 index 5fb1ab2ae..000000000 --- a/archival/libunarchive/data_extract_all.c +++ /dev/null @@ -1,200 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Licensed under GPLv2 or later, see file LICENSE in this source tree. - */ - -#include "libbb.h" -#include "unarchive.h" - -void FAST_FUNC data_extract_all(archive_handle_t *archive_handle) -{ - file_header_t *file_header = archive_handle->file_header; - int dst_fd; - int res; - -#if ENABLE_FEATURE_TAR_SELINUX - char *sctx = archive_handle->tar__next_file_sctx; - if (!sctx) - sctx = archive_handle->tar__global_sctx; - if (sctx) { /* setfscreatecon is 4 syscalls, avoid if possible */ - setfscreatecon(sctx); - free(archive_handle->tar__next_file_sctx); - archive_handle->tar__next_file_sctx = NULL; - } -#endif - - if (archive_handle->ah_flags & ARCHIVE_CREATE_LEADING_DIRS) { - char *slash = strrchr(file_header->name, '/'); - if (slash) { - *slash = '\0'; - bb_make_directory(file_header->name, -1, FILEUTILS_RECUR); - *slash = '/'; - } - } - - if (archive_handle->ah_flags & ARCHIVE_UNLINK_OLD) { - /* Remove the entry if it exists */ - if (!S_ISDIR(file_header->mode)) { - /* Is it hardlink? - * We encode hard links as regular files of size 0 with a symlink */ - if (S_ISREG(file_header->mode) - && file_header->link_target - && file_header->size == 0 - ) { - /* Ugly special case: - * tar cf t.tar hardlink1 hardlink2 hardlink1 - * results in this tarball structure: - * hardlink1 - * hardlink2 -> hardlink1 - * hardlink1 -> hardlink1 <== !!! - */ - if (strcmp(file_header->link_target, file_header->name) == 0) - goto ret; - } - /* Proceed with deleting */ - if (unlink(file_header->name) == -1 - && errno != ENOENT - ) { - bb_perror_msg_and_die("can't remove old file %s", - file_header->name); - } - } - } - else if (archive_handle->ah_flags & ARCHIVE_EXTRACT_NEWER) { - /* Remove the existing entry if its older than the extracted entry */ - struct stat existing_sb; - if (lstat(file_header->name, &existing_sb) == -1) { - if (errno != ENOENT) { - bb_perror_msg_and_die("can't stat old file"); - } - } - else if (existing_sb.st_mtime >= file_header->mtime) { - if (!(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET) - && !S_ISDIR(file_header->mode) - ) { - bb_error_msg("%s not created: newer or " - "same age file exists", file_header->name); - } - data_skip(archive_handle); - goto ret; - } - else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) { - bb_perror_msg_and_die("can't remove old file %s", - file_header->name); - } - } - - /* Handle hard links separately - * We encode hard links as regular files of size 0 with a symlink */ - if (S_ISREG(file_header->mode) - && file_header->link_target - && file_header->size == 0 - ) { - /* hard link */ - res = link(file_header->link_target, file_header->name); - if ((res == -1) && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET)) { - bb_perror_msg("can't create %slink " - "from %s to %s", "hard", - file_header->name, - file_header->link_target); - } - /* Hardlinks have no separate mode/ownership, skip chown/chmod */ - goto ret; - } - - /* Create the filesystem entry */ - switch (file_header->mode & S_IFMT) { - case S_IFREG: { - /* Regular file */ - int flags = O_WRONLY | O_CREAT | O_EXCL; - if (archive_handle->ah_flags & ARCHIVE_O_TRUNC) - flags = O_WRONLY | O_CREAT | O_TRUNC; - dst_fd = xopen3(file_header->name, - flags, - file_header->mode - ); - bb_copyfd_exact_size(archive_handle->src_fd, dst_fd, file_header->size); - close(dst_fd); - break; - } - case S_IFDIR: - res = mkdir(file_header->name, file_header->mode); - if ((res == -1) - && (errno != EISDIR) /* btw, Linux doesn't return this */ - && (errno != EEXIST) - && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET) - ) { - bb_perror_msg("can't make dir %s", file_header->name); - } - break; - case S_IFLNK: - /* Symlink */ -//TODO: what if file_header->link_target == NULL (say, corrupted tarball?) - res = symlink(file_header->link_target, file_header->name); - if ((res == -1) - && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET) - ) { - bb_perror_msg("can't create %slink " - "from %s to %s", "sym", - file_header->name, - file_header->link_target); - } - break; - case S_IFSOCK: - case S_IFBLK: - case S_IFCHR: - case S_IFIFO: - res = mknod(file_header->name, file_header->mode, file_header->device); - if ((res == -1) - && !(archive_handle->ah_flags & ARCHIVE_EXTRACT_QUIET) - ) { - bb_perror_msg("can't create node %s", file_header->name); - } - break; - default: - bb_error_msg_and_die("unrecognized file type"); - } - - if (!S_ISLNK(file_header->mode)) { - if (!(archive_handle->ah_flags & ARCHIVE_DONT_RESTORE_OWNER)) { - uid_t uid = file_header->uid; - gid_t gid = file_header->gid; -#if ENABLE_FEATURE_TAR_UNAME_GNAME - if (!(archive_handle->ah_flags & ARCHIVE_NUMERIC_OWNER)) { - if (file_header->tar__uname) { -//TODO: cache last name/id pair? - struct passwd *pwd = getpwnam(file_header->tar__uname); - if (pwd) uid = pwd->pw_uid; - } - if (file_header->tar__gname) { - struct group *grp = getgrnam(file_header->tar__gname); - if (grp) gid = grp->gr_gid; - } - } -#endif - /* GNU tar 1.15.1 uses chown, not lchown */ - chown(file_header->name, uid, gid); - } - /* uclibc has no lchmod, glibc is even stranger - - * it has lchmod which seems to do nothing! - * so we use chmod... */ - if (!(archive_handle->ah_flags & ARCHIVE_DONT_RESTORE_PERM)) { - chmod(file_header->name, file_header->mode); - } - if (archive_handle->ah_flags & ARCHIVE_RESTORE_DATE) { - struct timeval t[2]; - - t[1].tv_sec = t[0].tv_sec = file_header->mtime; - t[1].tv_usec = t[0].tv_usec = 0; - utimes(file_header->name, t); - } - } - - ret: ; -#if ENABLE_FEATURE_TAR_SELINUX - if (sctx) { - /* reset the context after creating an entry */ - setfscreatecon(NULL); - } -#endif -} |