SystemConfiguration.fproj/SCDTouch.c

   1 /*
   2  * Copyright (c) 2000-2005, 2009, 2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * Modification History
  26  *
  27  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  28  * - public API conversion
  29  *
  30  * June 20, 2000                Allan Nathanson <ajn@apple.com>
  31  * - initial revision
  32  */
  33
  34 #include <mach/mach.h>
  35 #include <mach/mach_error.h>
  36
  37 #include <SystemConfiguration/SystemConfiguration.h>
  38 #include <SystemConfiguration/SCPrivate.h>
  39 #include "SCDynamicStoreInternal.h"
  40 #include "config.h"             /* MiG generated file */
  41
  42 Boolean
  43 SCDynamicStoreTouchValue(SCDynamicStoreRef store, CFStringRef key)
  44 {
  45         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  46         kern_return_t                   status;
  47         CFDataRef                       utfKey;         /* serialized key */
  48         xmlData_t                       myKeyRef;
  49         CFIndex                         myKeyLen;
  50         int                             sc_status;
  51
  52         if (store == NULL) {
  53                 /* sorry, you must provide a session */
  54                 _SCErrorSet(kSCStatusNoStoreSession);
  55                 return FALSE;
  56         }
  57
  58         if (storePrivate->server == MACH_PORT_NULL) {
  59                 /* sorry, you must have an open session to play */
  60                 _SCErrorSet(kSCStatusNoStoreServer);
  61                 return FALSE;
  62         }
  63
  64         /* serialize the key */
  65         if (!_SCSerializeString(key, &utfKey, (void **)&myKeyRef, &myKeyLen)) {
  66                 _SCErrorSet(kSCStatusFailed);
  67                 return FALSE;
  68         }
  69
  70     retry :
  71
  72         /* send the key to the server */
  73         status = configtouch(storePrivate->server,
  74                              myKeyRef,
  75                              myKeyLen,
  76                              (int *)&sc_status);
  77
  78         if (status != KERN_SUCCESS) {
  79                 if ((status == MACH_SEND_INVALID_DEST) || (status == MIG_SERVER_DIED)) {
  80                         /* the server's gone and our session port's dead, remove the dead name right */
  81                         (void) mach_port_deallocate(mach_task_self(), storePrivate->server);
  82                 } else {
  83                         /* we got an unexpected error, leave the [session] port alone */
  84                         SCLog(TRUE, LOG_ERR, CFSTR("SCDynamicStoreTouchValue configtouch(): %s"), mach_error_string(status));
  85                 }
  86                 storePrivate->server = MACH_PORT_NULL;
  87                 if ((status == MACH_SEND_INVALID_DEST) || (status == MIG_SERVER_DIED)) {
  88                         if (__SCDynamicStoreReconnect(store)) {
  89                                 goto retry;
  90                         }
  91                 }
  92                 sc_status = status;
  93         }
  94
  95         /* clean up */
  96         CFRelease(utfKey);
  97
  98         if (sc_status != kSCStatusOK) {
  99                 _SCErrorSet(sc_status);
 100                 return FALSE;
 101         }
 102
 103         return TRUE;
 104 }