/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Safe stdio * Copyright (C) 1989 by NeXT, Inc. * * Stdio does not lock its iob slots. We must do the locking * ourselves here instead because we use multiple threads which * stdio does not expect. */ #include <stdio.h> #include <sys/types.h> #include <NetInfo/socket_lock.h> #include "ni_globals.h" #ifdef STDIO_DEBUG #include <sys/stat.h> #endif /* * fopen() a file thread-safe way. */ FILE * safe_fopen(char *fname, char *mode) { FILE *f; socket_lock(); f = fopen(fname, mode); #ifdef STDIO_DEBUG /* * If a problem occurs because descriptors are not being locked * correctly, this code will often catch the problem (with enough * beating up on the server). */ if (f != NULL) { struct stat st; extern void system_log(LOG_ERR,const char *); if (fstat(fileno(f), &st) < 0) { fclose(f); socket_unlock(); system_log(LOG_ERR,"fopen returned bogus descriptor"); return (NULL); } } #endif socket_unlock(); return (f); } /* * fclose() a file in a thread-safe way. */ int safe_fclose(FILE *f) { int res; socket_lock(); res = fclose(f); socket_unlock(); return (res); }