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Cider Isn't Darwin Emulation, Really
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3.5 kB · 133 lines
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134/* * Copyright (c) 2000, 2001, 2003-2005, 2008-2011, 2013, 2015-2017, 2019 Apple 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@ */
/* * Modification History * * June 1, 2001 Allan Nathanson <ajn@apple.com> * - public API conversion * * April 5, 2000 Allan Nathanson <ajn@apple.com> * - initial revision */
#include "SCDynamicStoreInternal.h"#include "config.h" /* MiG generated file */
#include <paths.h>#include <unistd.h>#include <sys/types.h>#include <sys/socket.h>#include <sys/un.h>
BooleanSCDynamicStoreNotifyFileDescriptor(SCDynamicStoreRef store, int32_t identifier, int *fd){ int fildes[2] = { -1, -1 }; fileport_t fileport = MACH_PORT_NULL; int ret; int sc_status; SCDynamicStorePrivateRef storePrivate = (SCDynamicStorePrivateRef)store; kern_return_t status;
if (store == NULL) { /* sorry, you must provide a session */ _SCErrorSet(kSCStatusNoStoreSession); return FALSE; }
if (storePrivate->server == MACH_PORT_NULL) { /* sorry, you must have an open session to play */ _SCErrorSet(kSCStatusNoStoreServer); return FALSE; }
if (storePrivate->notifyStatus != NotifierNotRegistered) { /* sorry, you can only have one notification registered at once */ _SCErrorSet(kSCStatusNotifierActive); return FALSE; }
ret = pipe(fildes); if (ret == -1) { _SCErrorSet(errno); SC_log(LOG_ERR, "pipe() failed: %s", strerror(errno)); goto fail; }
/* * send fildes[1], the sender's fd, to configd using a fileport and * return fildes[0] to the caller. */
fileport = MACH_PORT_NULL; ret = fileport_makeport(fildes[1], &fileport); if (ret < 0) { _SCErrorSet(errno); SC_log(LOG_ERR, "fileport_makeport() failed: %s", strerror(errno)); goto fail; }
retry :
status = notifyviafd(storePrivate->server, fileport, identifier, (int *)&sc_status);
if (__SCDynamicStoreCheckRetryAndHandleError(store, status, &sc_status, "SCDynamicStoreNotifyFileDescriptor notifyviafd()")) { goto retry; }
if (status != KERN_SUCCESS) { _SCErrorSet(status); goto fail; }
if (sc_status != kSCStatusOK) { _SCErrorSet(sc_status); goto fail; }
/* the SCDynamicStore server now has a copy of the write side, close our reference */ (void) close(fildes[1]);
/* and keep the read side */ *fd = fildes[0];
/* set notifier active */ storePrivate->notifyStatus = Using_NotifierInformViaFD;
return TRUE;
fail :
if (fildes[0] != -1) close(fildes[0]); if (fildes[1] != -1) close(fildes[1]); return FALSE;}