diff options
Diffstat (limited to 'archival/libunarchive/get_header_cpio.c')
| -rw-r--r-- | archival/libunarchive/get_header_cpio.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/archival/libunarchive/get_header_cpio.c b/archival/libunarchive/get_header_cpio.c deleted file mode 100644 index cd48601b6..000000000 --- a/archival/libunarchive/get_header_cpio.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Library General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "unarchive.h" -#include "libbb.h" - -struct hardlinks { - file_header_t *entry; - int inode; - struct hardlinks *next; -}; - -file_header_t *get_header_cpio(FILE *src_stream) -{ - file_header_t *cpio_entry = NULL; - char cpio_header[110]; - int namesize; - char dummy[16]; - int major, minor, nlink, inode; - static struct hardlinks *saved_hardlinks = NULL; - static int pending_hardlinks = 0; - - if (pending_hardlinks) { /* Deal with any pending hardlinks */ - struct hardlinks *tmp = saved_hardlinks, *oldtmp = NULL; - while (tmp) { - if (tmp->entry->link_name) { /* Found a hardlink ready to be extracted */ - cpio_entry = tmp->entry; - if (oldtmp) oldtmp->next = tmp->next; /* Remove item from linked list */ - else saved_hardlinks = tmp->next; - free(tmp); - return (cpio_entry); - } - oldtmp = tmp; - tmp = tmp->next; - } - pending_hardlinks = 0; /* No more pending hardlinks, read next file entry */ - } - - /* There can be padding before archive header */ - seek_sub_file(src_stream, (4 - (archive_offset % 4)) % 4); - if (fread(cpio_header, 1, 110, src_stream) == 110) { - archive_offset += 110; - if (strncmp(cpio_header, "07070", 5) != 0) { - error_msg("Unsupported format or invalid magic"); - return(NULL); - } - switch (cpio_header[5]) { - case '2': /* "crc" header format */ - /* Doesnt do the crc check yet */ - case '1': /* "newc" header format */ - cpio_entry = (file_header_t *) xcalloc(1, sizeof(file_header_t)); - sscanf(cpio_header, "%6c%8x%8x%8x%8x%8x%8lx%8lx%16c%8x%8x%8x%8c", - dummy, &inode, (unsigned int*)&cpio_entry->mode, - (unsigned int*)&cpio_entry->uid, (unsigned int*)&cpio_entry->gid, - &nlink, &cpio_entry->mtime, &cpio_entry->size, - dummy, &major, &minor, &namesize, dummy); - - cpio_entry->name = (char *) xcalloc(1, namesize); - fread(cpio_entry->name, 1, namesize, src_stream); /* Read in filename */ - archive_offset += namesize; - /* Skip padding before file contents */ - seek_sub_file(src_stream, (4 - (archive_offset % 4)) % 4); - if (strcmp(cpio_entry->name, "TRAILER!!!") == 0) { - printf("%d blocks\n", (int) (archive_offset % 512 ? (archive_offset / 512) + 1 : archive_offset / 512)); /* Always round up */ - if (saved_hardlinks) { /* Bummer - we still have unresolved hardlinks */ - struct hardlinks *tmp = saved_hardlinks, *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(NULL); - } - - if (S_ISLNK(cpio_entry->mode)) { - cpio_entry->link_name = (char *) xcalloc(1, cpio_entry->size + 1); - fread(cpio_entry->link_name, 1, cpio_entry->size, src_stream); - archive_offset += cpio_entry->size; - cpio_entry->size = 0; /* Stop possiable seeks in future */ - } - if (nlink > 1 && !S_ISDIR(cpio_entry->mode)) { - if (cpio_entry->size == 0) { /* Put file on a linked list for later */ - struct hardlinks *new = xmalloc(sizeof(struct hardlinks)); - new->next = saved_hardlinks; - new->inode = inode; - new->entry = cpio_entry; - saved_hardlinks = new; - return(get_header_cpio(src_stream)); /* Recurse to next file */ - } else { /* Found the file with data in */ - struct hardlinks *tmp = saved_hardlinks; - pending_hardlinks = 1; - while (tmp) { - if (tmp->inode == inode) { - tmp->entry->link_name = xstrdup(cpio_entry->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?"); - } - } - cpio_entry->device = (major << 8) | minor; - break; - default: - error_msg("Unsupported format"); - return(NULL); - } - if (ferror(src_stream) || feof(src_stream)) { - perror_msg("Stream error"); - return(NULL); - } - } - return(cpio_entry); -} - |