source: MondoRescue/branches/2.2.9/mindi-busybox/libbb/wfopen.c@ 2725

/* 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 source tree.
 */

#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);
}