win32_apply.c: Don't externally back very large files

[wimlib] / src / header.c

diff --git a/src/header.c b/src/header.c
index 30b2b13204abc8dd6fd0a1bd3df6511711876584..634f4dab8cd8275db3e3fcd202f051f00f173afc 100644 (file)
--- a/src/header.c
+++ b/src/header.c
@@ -7,27 +7,30 @@
 /*
  * Copyright (C) 2012, 2013 Eric Biggers
  *
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
  *
- * wimlib 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 3 of the License, or (at your option)
- * any later version.
- *
- * wimlib 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 General Public License for more
+ * This file 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 Lesser General Public License for more
  * details.
  *
- * You should have received a copy of the GNU General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
  */
 
 #ifdef HAVE_CONFIG_H
 #  include "config.h"
 #endif
 
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
 #include "wimlib.h"
+#include "wimlib/alloca.h"
 #include "wimlib/assert.h"
 #include "wimlib/endianness.h"
 #include "wimlib/error.h"
@@ -36,15 +39,6 @@
 #include "wimlib/util.h"
 #include "wimlib/wim.h"
 
-#include <limits.h>
-#include <string.h>
-#include <unistd.h>
-#ifdef HAVE_ALLOCA_H
-#  include <alloca.h>
-#else
-#  include <stdlib.h>
-#endif
-
 /*
  * Reads the header from a WIM file.
  *
@@ -96,7 +90,9 @@ read_wim_header(WIMStruct *wim, struct wim_header *hdr)
                        /* Pipable WIM:  Use header at end instead, unless
                         * actually reading from a pipe.  */
                        if (!in_fd->is_pipe) {
-                               lseek(in_fd->fd, -WIM_HEADER_DISK_SIZE, SEEK_END);
+                               ret = WIMLIB_ERR_READ;
+                               if (-1 == lseek(in_fd->fd, -WIM_HEADER_DISK_SIZE, SEEK_END))
+                                       goto read_error;
                                ret = full_read(in_fd, &disk_hdr, sizeof(disk_hdr));
                                if (ret)
                                        goto read_error;
@@ -115,7 +111,7 @@ read_wim_header(WIMStruct *wim, struct wim_header *hdr)
 
        hdr->wim_version = le32_to_cpu(disk_hdr.wim_version);
        if (hdr->wim_version != WIM_VERSION_DEFAULT &&
-           hdr->wim_version != WIM_VERSION_PACKED_STREAMS)
+           hdr->wim_version != WIM_VERSION_SOLID)
        {
                ERROR("\"%"TS"\": Unknown WIM version: %u",
                      filename, hdr->wim_version);
@@ -141,7 +137,7 @@ read_wim_header(WIMStruct *wim, struct wim_header *hdr)
        DEBUG("part_number = %u, total_parts = %u, image_count = %u",
              hdr->part_number, hdr->total_parts, hdr->image_count);
 
-       if (hdr->image_count >= INT_MAX) {
+       if (unlikely(hdr->image_count > MAX_IMAGES)) {
                ERROR("\"%"TS"\": Invalid image count (%u)",
                      filename, hdr->image_count);
                return WIMLIB_ERR_IMAGE_COUNT;
@@ -261,7 +257,7 @@ init_wim_header(struct wim_header *hdr, int ctype, u32 chunk_size)
        hdr->magic = WIM_MAGIC;
 
        if (ctype == WIMLIB_COMPRESSION_TYPE_LZMS)
-               hdr->wim_version = WIM_VERSION_PACKED_STREAMS;
+               hdr->wim_version = WIM_VERSION_SOLID;
        else
                hdr->wim_version = WIM_VERSION_DEFAULT;
        if (set_wim_hdr_cflags(ctype, hdr)) {