Use fseeko() instead of fseek().

Fix 2GB per file limit on Windows for some file types.

1 files changed, 36 insertions, 2 deletions

diff --git a/src/file_doc.c b/src/file_doc.c
index 395b3305..ad71f106 100644
--- a/src/file_doc.c
+++ b/src/file_doc.c
@@ -84,7 +84,12 @@ static void file_check_doc(file_recovery_t *file_recovery)
   const uint64_t doc_file_size_org=file_recovery->file_size;
   file_recovery->file_size=0;
   /*reads first sector including OLE header */
-  if(fseek(file_recovery->handle, 0, SEEK_SET) < 0 ||
+  if(
+#ifdef HAVE_FSEEKO
+      fseeko(file_recovery->handle, 0, SEEK_SET) < 0 ||
+#else
+      fseek(file_recovery->handle, 0, SEEK_SET) < 0 ||
+#endif
       fread(&buffer_header, sizeof(buffer_header), 1, file_recovery->handle) != 1)
     return ;
 #ifdef DEBUG_OLE
@@ -149,7 +154,11 @@ static void file_check_doc(file_recovery_t *file_recovery)
 	free(fat);
 	return ;
       }
+#ifdef HAVE_FSEEKO
+      if(fseeko(file_recovery->handle, (1+block)<<le16(header->uSectorShift), SEEK_SET)<0)
+#else
       if(fseek(file_recovery->handle, (1+block)<<le16(header->uSectorShift), SEEK_SET)<0)
+#endif
       {
 #ifdef DEBUG_OLE
 	log_info("fseek failed\n");
@@ -497,7 +506,11 @@ static uint32_t *OLE_load_FAT(FILE *IN, const struct OLE_HDR *header)
 	i<le32(header->num_extra_FAT_blocks) && block!=0xFFFFFFFF && block!=0xFFFFFFFE;
 	i++, block=le32(dif[109+i*(((1<<le16(header->uSectorShift))/4)-1)]))
     {
+#ifdef HAVE_FSEEKO
+      if(fseeko(IN, (1+block)<<le16(header->uSectorShift), SEEK_SET) < 0)
+#else
       if(fseek(IN, (1+block)<<le16(header->uSectorShift), SEEK_SET) < 0)
+#endif
       {
 	free(dif);
 	return NULL;
@@ -518,7 +531,11 @@ static uint32_t *OLE_load_FAT(FILE *IN, const struct OLE_HDR *header)
 	j<le32(header->num_FAT_blocks);
 	j++, data+=(1<<le16(header->uSectorShift)))
     {
+#ifdef HAVE_FSEEKO
+      if(fseeko(IN, (1+le32(dif[j]))<<le16(header->uSectorShift), SEEK_SET)<0)
+#else
       if(fseek(IN, (1+le32(dif[j]))<<le16(header->uSectorShift), SEEK_SET)<0)
+#endif
       {
 	free(dif);
 	free(fat);
@@ -553,7 +570,11 @@ static void *OLE_read_stream(FILE *IN,
       free(dataPt);
       return NULL;
     }
+#ifdef HAVE_FSEEKO
+    if(fseeko(IN, (1+block)<<uSectorShift, SEEK_SET)<0)
+#else
     if(fseek(IN, (1+block)<<uSectorShift, SEEK_SET)<0)
+#endif
     {
       free(dataPt);
       return NULL;
@@ -580,7 +601,11 @@ static uint32_t *OLE_load_MiniFAT(FILE *IN, const struct OLE_HDR *header, const
   block=le32(header->MiniFat_block);
   for(i=0; i < le32(header->csectMiniFat) && block < fat_entries; i++)
   {
+#ifdef HAVE_FSEEKO
+    if(fseeko(IN, ((uint64_t)1+block) << le16(header->uSectorShift), SEEK_SET) < 0)
+#else
     if(fseek(IN, ((uint64_t)1+block) << le16(header->uSectorShift), SEEK_SET) < 0)
+#endif
     {
       free(minifat);
       return NULL;
@@ -840,7 +865,12 @@ static void file_rename_doc(const char *old_filename)
   log_info("file_rename_doc(%s)\n", old_filename);
 #endif
   /*reads first sector including OLE header */
-  if(fseek(file, 0, SEEK_SET) < 0 ||
+  if(
+#ifdef HAVE_FSEEKO
+      fseeko(file, 0, SEEK_SET) < 0 ||
+#else
+      fseek(file, 0, SEEK_SET) < 0 ||
+#endif
       fread(&buffer_header, sizeof(buffer_header), 1, file) != 1)
   {
     fclose(file);
@@ -877,7 +907,11 @@ static void file_rename_doc(const char *old_filename)
 	block=le32(fat[block]), i++)
     {
       struct OLE_DIR *dir_entries;
+#ifdef HAVE_FSEEKO
+      if(fseeko(file, (1+block)<<le16(header->uSectorShift), SEEK_SET)<0)
+#else
       if(fseek(file, (1+block)<<le16(header->uSectorShift), SEEK_SET)<0)
+#endif
       {
 	free(fat);
 	fclose(file);