busybox/libbb/wfopen.c

/* vi: set sw=4 ts=4: */
/*
 * Utility routines.
 *
 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

FILE* FAST_FUNC fopen_or_warn(const char *path, const char *mode)
{
	FILE *fp = fopen(path, mode);
	if (!fp) {
		bb_simple_perror_msg(path);
		//errno = 0; /* why? */
	}
	return fp;
}

FILE* FAST_FUNC fopen_for_read(const char *path)
{
	return fopen(path, "r");
}

FILE* FAST_FUNC xfopen_for_read(const char *path)
{
	return xfopen(path, "r");
}

FILE* FAST_FUNC fopen_for_write(const char *path)
{
	return fopen(path, "w");
}

FILE* FAST_FUNC xfopen_for_write(const char *path)
{
	return xfopen(path, "w");
}

static FILE* xfdopen_helper(unsigned fd_and_rw_bit)
{
	FILE* fp = fdopen(fd_and_rw_bit >> 1, fd_and_rw_bit & 1 ? "w" : "r");
	if (!fp)
		bb_error_msg_and_die(bb_msg_memory_exhausted);
	return fp;
}
FILE* FAST_FUNC xfdopen_for_read(int fd)
{
	return xfdopen_helper(fd << 1);
}
FILE* FAST_FUNC xfdopen_for_write(int fd)
{
	return xfdopen_helper((fd << 1) + 1);
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* Utility routines.
4	*
5	* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6	*
7	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8	*/
9
10	#include "libbb.h"
11
12	FILE* FAST_FUNC fopen_or_warn(const char path, const char mode)
13	{
14	FILE *fp = fopen(path, mode);
15	if (!fp) {
16	bb_simple_perror_msg(path);
17	//errno = 0; /* why? */
18	}
19	return fp;
20	}
21
22	FILE* FAST_FUNC fopen_for_read(const char *path)
23	{
24	return fopen(path, "r");
25	}
26
27	FILE* FAST_FUNC xfopen_for_read(const char *path)
28	{
29	return xfopen(path, "r");
30	}
31
32	FILE* FAST_FUNC fopen_for_write(const char *path)
33	{
34	return fopen(path, "w");
35	}
36
37	FILE* FAST_FUNC xfopen_for_write(const char *path)
38	{
39	return xfopen(path, "w");
40	}
41
42	static FILE* xfdopen_helper(unsigned fd_and_rw_bit)
43	{
44	FILE* fp = fdopen(fd_and_rw_bit >> 1, fd_and_rw_bit & 1 ? "w" : "r");
45	if (!fp)
46	bb_error_msg_and_die(bb_msg_memory_exhausted);
47	return fp;
48	}
49	FILE* FAST_FUNC xfdopen_for_read(int fd)
50	{
51	return xfdopen_helper(fd << 1);
52	}
53	FILE* FAST_FUNC xfdopen_for_write(int fd)
54	{
55	return xfdopen_helper((fd << 1) + 1);
56	}