/* 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); }