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Allow BIO_s_file to open and sequentially access files larger than 2GB

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on affected platforms.
PR: 973
This commit is contained in:
Andy Polyakov 2005-06-06 12:05:12 +00:00
parent bd4e9b0512
commit 727c9b8027
1 changed files with 18 additions and 0 deletions
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18
crypto/bio/bss_file.c
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@ -65,6 +65,24 @@
#ifndef HEADER_BSS_FILE_C
#define HEADER_BSS_FILE_C
#if defined(__linux) || defined(__sun) || defined(__hpux)
/* Following definition aliases fopen to fopen64 on above mentioned
* platforms. This makes it possible to open and sequentially access
* files larger than 2GB from 32-bit application. It does not allow to
* traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
* 32-bit platform permits that, not with fseek/ftell. Not to mention
* that breaking 2GB limit for seeking would require surgery to *our*
* API. But sequential access suffices for practical cases when you
* can run into large files, such as fingerprinting, so we can let API
* alone. For reference, the list of 32-bit platforms which allow for
* sequential access of large files without extra "magic" comprise *BSD,
* Darwin, IRIX...
*/
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#endif
#endif
#include <stdio.h>
#include <errno.h>
#include "cryptlib.h"