diff options
Diffstat (limited to 'archival/cpio.c')
| -rw-r--r-- | archival/cpio.c | 160 |
1 files changed, 1 insertions, 159 deletions
diff --git a/archival/cpio.c b/archival/cpio.c index 8b4cc2d..49f3f88 100644 --- a/archival/cpio.c +++ b/archival/cpio.c @@ -31,12 +31,6 @@ #include "unarchive.h" #include "busybox.h" -typedef struct hardlinks_s { - file_header_t *entry; - int inode; - struct hardlinks_s *next; -} hardlinks_t; - extern int cpio_main(int argc, char **argv) { archive_handle_t *archive_handle; @@ -83,159 +77,7 @@ extern int cpio_main(int argc, char **argv) optind++; } - while (1) { - static hardlinks_t *saved_hardlinks = NULL; - static unsigned short pending_hardlinks = 0; - file_header_t *file_header = archive_handle->file_header; - char cpio_header[110]; - int namesize; - char dummy[16]; - int major, minor, nlink, inode; - char extract_flag; - - if (pending_hardlinks) { /* Deal with any pending hardlinks */ - hardlinks_t *tmp; - hardlinks_t *oldtmp; - - tmp = saved_hardlinks; - oldtmp = NULL; - - while (tmp) { - error_msg_and_die("need to fix this\n"); - if (tmp->entry->link_name) { /* Found a hardlink ready to be extracted */ - file_header = tmp->entry; - if (oldtmp) { - oldtmp->next = tmp->next; /* Remove item from linked list */ - } else { - saved_hardlinks = tmp->next; - } - free(tmp); - continue; - } - oldtmp = tmp; - tmp = tmp->next; - } - pending_hardlinks = 0; /* No more pending hardlinks, read next file entry */ - } - - /* There can be padding before archive header */ - data_align(archive_handle, 4); - - if (archive_xread_all_eof(archive_handle, cpio_header, 110) == 0) { - return(EXIT_FAILURE); - } - archive_handle->offset += 110; - - if (strncmp(&cpio_header[0], "07070", 5) != 0) { - printf("cpio header is %x-%x-%x-%x-%x\n", - cpio_header[0], - cpio_header[1], - cpio_header[2], - cpio_header[3], - cpio_header[4]); - error_msg_and_die("Unsupported cpio format"); - } - - if ((cpio_header[5] != '1') && (cpio_header[5] != '2')) { - error_msg_and_die("Unsupported cpio format, use newc or crc"); - } - - sscanf(cpio_header, "%6c%8x%8x%8x%8x%8x%8lx%8lx%16c%8x%8x%8x%8c", - dummy, &inode, (unsigned int*)&file_header->mode, - (unsigned int*)&file_header->uid, (unsigned int*)&file_header->gid, - &nlink, &file_header->mtime, &file_header->size, - dummy, &major, &minor, &namesize, dummy); - - file_header->name = (char *) xmalloc(namesize + 1); - archive_xread_all(archive_handle, file_header->name, namesize); /* Read in filename */ - file_header->name[namesize] = '\0'; - archive_handle->offset += namesize; - - /* Update offset amount and skip padding before file contents */ - data_align(archive_handle, 4); - - if (strcmp(file_header->name, "TRAILER!!!") == 0) { - printf("%d blocks\n", (int) (archive_handle->offset % 512 ? (archive_handle->offset / 512) + 1 : archive_handle->offset / 512)); /* Always round up */ - if (saved_hardlinks) { /* Bummer - we still have unresolved hardlinks */ - hardlinks_t *tmp = saved_hardlinks; - hardlinks_t *oldtmp = NULL; - while (tmp) { - error_msg("%s not created: cannot resolve hardlink", tmp->entry->name); - oldtmp = tmp; - tmp = tmp->next; - free (oldtmp->entry->name); - free (oldtmp->entry); - free (oldtmp); - } - saved_hardlinks = NULL; - pending_hardlinks = 0; - } - return(EXIT_FAILURE); - } - - if (S_ISLNK(file_header->mode)) { - file_header->link_name = (char *) xmalloc(file_header->size + 1); - archive_xread_all(archive_handle, file_header->link_name, file_header->size); - file_header->link_name[file_header->size] = '\0'; - archive_handle->offset += file_header->size; - file_header->size = 0; /* Stop possible seeks in future */ - } - if (nlink > 1 && !S_ISDIR(file_header->mode)) { - if (file_header->size == 0) { /* Put file on a linked list for later */ - hardlinks_t *new = xmalloc(sizeof(hardlinks_t)); - new->next = saved_hardlinks; - new->inode = inode; - new->entry = file_header; - saved_hardlinks = new; - continue; - } else { /* Found the file with data in */ - hardlinks_t *tmp = saved_hardlinks; - pending_hardlinks = 1; - while (tmp) { - if (tmp->inode == inode) { - tmp->entry->link_name = xstrdup(file_header->name); - nlink--; - } - tmp = tmp->next; - } - if (nlink > 1) { - error_msg("error resolving hardlink: did you create the archive with GNU cpio 2.0-2.2?"); - } - } - } - file_header->device = (major << 8) | minor; - - extract_flag = FALSE; - if (archive_handle->filter(archive_handle) == EXIT_SUCCESS) { - struct stat statbuf; - - extract_flag = TRUE; - - /* Check if the file already exists */ - if (lstat (file_header->name, &statbuf) == 0) { - if ((archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) || (statbuf.st_mtime < file_header->mtime)) { - /* Remove file if flag set or its older than the file to be extracted */ - if (unlink(file_header->name) == -1) { - perror_msg_and_die("Couldnt remove old file"); - } - } else { - if (! archive_handle->flags & ARCHIVE_EXTRACT_QUIET) { - error_msg("%s not created: newer or same age file exists", file_header->name); - } - extract_flag = FALSE; - } - } - archive_handle->action_header(file_header); - } - - archive_handle->action_header(file_header); - if (extract_flag) { - archive_handle->action_data(archive_handle); - } else { - data_skip(archive_handle); - } - archive_handle->offset += file_header->size; - } + while (get_header_cpio(archive_handle) == EXIT_SUCCESS); return(EXIT_SUCCESS); } |