56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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#include "libbb.h"
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FILE* FAST_FUNC fopen_or_warn(const char *path, const char *mode)
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{
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FILE *fp = fopen(path, mode);
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if (!fp) {
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bb_simple_perror_msg(path);
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//errno = 0; /* why? */
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}
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return fp;
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}
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FILE* FAST_FUNC fopen_for_read(const char *path)
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{
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return fopen(path, "r");
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}
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FILE* FAST_FUNC xfopen_for_read(const char *path)
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{
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return xfopen(path, "r");
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}
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FILE* FAST_FUNC fopen_for_write(const char *path)
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{
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return fopen(path, "w");
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}
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FILE* FAST_FUNC xfopen_for_write(const char *path)
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{
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return xfopen(path, "w");
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}
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static FILE* xfdopen_helper(unsigned fd_and_rw_bit)
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{
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FILE* fp = fdopen(fd_and_rw_bit >> 1, fd_and_rw_bit & 1 ? "w" : "r");
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if (!fp)
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bb_error_msg_and_die(bb_msg_memory_exhausted);
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return fp;
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}
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FILE* FAST_FUNC xfdopen_for_read(int fd)
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{
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return xfdopen_helper(fd << 1);
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}
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FILE* FAST_FUNC xfdopen_for_write(int fd)
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{
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return xfdopen_helper((fd << 1) + 1);
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}
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