bsd/hfs/MacOSStubs.c

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 #include <sys/param.h>
  26 #include <sys/systm.h>
  27 #include <sys/kernel.h>
  28 #include <sys/malloc.h>
  29 #include <sys/types.h>
  30
  31 #include "hfs.h"
  32 #include "hfs_dbg.h"
  33 #include "hfscommon/headers/FileMgrInternal.h"
  34
  35
  36 /*
  37  * gTimeZone should only be used for HFS volumes!
  38  * It is initialized when an HFS volume is mounted.
  39  */
  40 struct timezone gTimeZone = {8*60,1};
  41
  42 /*
  43  * GetTimeUTC - get the GMT Mac OS time (in seconds since 1/1/1904)
  44  *
  45  * called by the Catalog Manager when creating/updating HFS Plus records
  46  */
  47 UInt32 GetTimeUTC(void)
  48 {
  49     return (time.tv_sec + MAC_GMT_FACTOR);
  50 }
  51
  52
  53 /*
  54  * LocalToUTC - convert from Mac OS local time to Mac OS GMT time.
  55  * This should only be called for HFS volumes (not for HFS Plus).
  56  */
  57 UInt32 LocalToUTC(UInt32 localTime)
  58 {
  59         UInt32 gtime = localTime;
  60
  61         if (gtime != 0) {
  62                 gtime += (gTimeZone.tz_minuteswest * 60);
  63         /*
  64          * We no longer do DST adjustments here since we don't
  65          * know if time supplied needs adjustment!
  66          *
  67          * if (gTimeZone.tz_dsttime)
  68          *     gtime -= 3600;
  69          */
  70         }
  71     return (gtime);
  72 }
  73
  74 /*
  75  * UTCToLocal - convert from Mac OS GMT time to Mac OS local time.
  76  * This should only be called for HFS volumes (not for HFS Plus).
  77  */
  78 UInt32 UTCToLocal(UInt32 utcTime)
  79 {
  80         UInt32 ltime = utcTime;
  81
  82         if (ltime != 0) {
  83                 ltime -= (gTimeZone.tz_minuteswest * 60);
  84         /*
  85          * We no longer do DST adjustments here since we don't
  86          * know if time supplied needs adjustment!
  87          *
  88          * if (gTimeZone.tz_dsttime)
  89          *     ltime += 3600;
  90          */
  91         }
  92     return (ltime);
  93 }
  94
  95 /*
  96  * to_bsd_time - convert from Mac OS time (seconds since 1/1/1904)
  97  *               to BSD time (seconds since 1/1/1970)
  98  */
  99 u_int32_t to_bsd_time(u_int32_t hfs_time)
 100 {
 101         u_int32_t gmt = hfs_time;
 102
 103         if (gmt > MAC_GMT_FACTOR)
 104                 gmt -= MAC_GMT_FACTOR;
 105         else
 106                 gmt = 0;        /* don't let date go negative! */
 107
 108         return gmt;
 109 }
 110
 111 /*
 112  * to_hfs_time - convert from BSD time (seconds since 1/1/1970)
 113  *               to Mac OS time (seconds since 1/1/1904)
 114  */
 115 u_int32_t to_hfs_time(u_int32_t bsd_time)
 116 {
 117         u_int32_t hfs_time = bsd_time;
 118
 119         /* don't adjust zero - treat as uninitialzed */
 120         if (hfs_time != 0)
 121                 hfs_time += MAC_GMT_FACTOR;
 122
 123         return (hfs_time);
 124 }
 125
 126
 127 Ptr  NewPtrSysClear (Size byteCount)
 128 {
 129     Ptr         tmptr;
 130     MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK);
 131     if (tmptr)
 132         bzero(tmptr, byteCount);
 133     return tmptr;
 134 }
 135
 136
 137
 138 Ptr  NewPtr (Size byteCount)
 139 {
 140     Ptr         tmptr;
 141     MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK);
 142     return tmptr;
 143 }
 144
 145
 146 void DisposePtr (Ptr p)
 147 {
 148     FREE (p, M_TEMP);
 149 }
 150
 151
 152 void DebugStr (ConstStr255Param  debuggerMsg)
 153 {
 154     kprintf ("*** Mac OS Debugging Message: %s\n", &debuggerMsg[1]);
 155         DEBUG_BREAK;
 156 }
 157