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/* 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);
}
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