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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision db810ac2b80999458617977bd7b8fa7953f45b55 authored by Fred Drake on 06 October 2000, 20:42:33 UTC, committed by Fred Drake on 06 October 2000, 20:42:33 UTC 
Donn Cave <donn@oz.net>:
 
Fix large file support for BeOS.

This closes SourceForge patch #101773.  Refer to the patch discussion for
information on possible alternate fixes.
1 parent 24c532a
Raw File
Tip revision: db810ac2b80999458617977bd7b8fa7953f45b55 authored by Fred Drake on 06 October 2000, 20:42:33 UTC
Donn Cave <donn@oz.net>:
Tip revision: db810ac
dup2.c 
/*
 * Public domain dup2() lookalike
 * by Curtis Jackson @ AT&T Technologies, Burlington, NC
 * electronic address:  burl!rcj
 *
 * dup2 performs the following functions:
 *
 * Check to make sure that fd1 is a valid open file descriptor.
 * Check to see if fd2 is already open; if so, close it.
 * Duplicate fd1 onto fd2; checking to make sure fd2 is a valid fd.
 * Return fd2 if all went well; return BADEXIT otherwise.
 */

#include <fcntl.h>

#define BADEXIT -1

int
dup2(int fd1, int fd2)
{
	if (fd1 != fd2) {
		if (fcntl(fd1, F_GETFL) < 0)
			return BADEXIT;
		if (fcntl(fd2, F_GETFL) >= 0)
			close(fd2);
		if (fcntl(fd1, F_DUPFD, fd2) < 0)
			return BADEXIT;
	}
	return fd2;
}
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