Python code coverage for Python/dup2.c

#	count	content
1	n/a	/*
2	n/a	* Public domain dup2() lookalike
3	n/a	* by Curtis Jackson @ AT&T Technologies, Burlington, NC
4	n/a	* electronic address: burl!rcj
5	n/a	*
6	n/a	* dup2 performs the following functions:
7	n/a	*
8	n/a	* Check to make sure that fd1 is a valid open file descriptor.
9	n/a	* Check to see if fd2 is already open; if so, close it.
10	n/a	* Duplicate fd1 onto fd2; checking to make sure fd2 is a valid fd.
11	n/a	* Return fd2 if all went well; return BADEXIT otherwise.
12	n/a	*/
13	n/a
14	n/a	#include <fcntl.h>
15	n/a	#include <unistd.h>
16	n/a
17	n/a	#define BADEXIT -1
18	n/a
19	n/a	int
20	n/a	dup2(int fd1, int fd2)
21	n/a	{
22	n/a	if (fd1 != fd2) {
23	n/a	if (fcntl(fd1, F_GETFL) < 0)
24	n/a	return BADEXIT;
25	n/a	if (fcntl(fd2, F_GETFL) >= 0)
26	n/a	close(fd2);
27	n/a	if (fcntl(fd1, F_DUPFD, fd2) < 0)
28	n/a	return BADEXIT;
29	n/a	}
30	n/a	return fd2;
31	n/a	}