bsd/hfs/MacOSStubs.c

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 #include <sys/param.h>
  23 #include <sys/systm.h>
  24 #include <sys/kernel.h>
  25 #include <sys/malloc.h>
  26 #include <sys/types.h>
  27
  28 #include "hfs.h"
  29 #include "hfs_dbg.h"
  30 #include "hfscommon/headers/FileMgrInternal.h"
  31
  32
  33 /*
  34  * gTimeZone should only be used for HFS volumes!
  35  * It is initialized when an HFS volume is mounted.
  36  */
  37 struct timezone gTimeZone = {8*60,1};
  38
  39 /*
  40  * GetTimeUTC - get the GMT Mac OS time (in seconds since 1/1/1904)
  41  *
  42  * called by the Catalog Manager when creating/updating HFS Plus records
  43  */
  44 UInt32 GetTimeUTC(void)
  45 {
  46     return (time.tv_sec + MAC_GMT_FACTOR);
  47 }
  48
  49
  50 /*
  51  * LocalToUTC - convert from Mac OS local time to Mac OS GMT time.
  52  * This should only be called for HFS volumes (not for HFS Plus).
  53  */
  54 UInt32 LocalToUTC(UInt32 localTime)
  55 {
  56         UInt32 gtime = localTime;
  57
  58         if (gtime != 0) {
  59                 gtime += (gTimeZone.tz_minuteswest * 60);
  60         /*
  61          * We no longer do DST adjustments here since we don't
  62          * know if time supplied needs adjustment!
  63          *
  64          * if (gTimeZone.tz_dsttime)
  65          *     gtime -= 3600;
  66          */
  67         }
  68     return (gtime);
  69 }
  70
  71 /*
  72  * UTCToLocal - convert from Mac OS GMT time to Mac OS local time.
  73  * This should only be called for HFS volumes (not for HFS Plus).
  74  */
  75 UInt32 UTCToLocal(UInt32 utcTime)
  76 {
  77         UInt32 ltime = utcTime;
  78
  79         if (ltime != 0) {
  80                 ltime -= (gTimeZone.tz_minuteswest * 60);
  81         /*
  82          * We no longer do DST adjustments here since we don't
  83          * know if time supplied needs adjustment!
  84          *
  85          * if (gTimeZone.tz_dsttime)
  86          *     ltime += 3600;
  87          */
  88         }
  89     return (ltime);
  90 }
  91
  92 /*
  93  * to_bsd_time - convert from Mac OS time (seconds since 1/1/1904)
  94  *               to BSD time (seconds since 1/1/1970)
  95  */
  96 u_int32_t to_bsd_time(u_int32_t hfs_time)
  97 {
  98         u_int32_t gmt = hfs_time;
  99
 100         if (gmt > MAC_GMT_FACTOR)
 101                 gmt -= MAC_GMT_FACTOR;
 102         else
 103                 gmt = 0;        /* don't let date go negative! */
 104
 105         return gmt;
 106 }
 107
 108 /*
 109  * to_hfs_time - convert from BSD time (seconds since 1/1/1970)
 110  *               to Mac OS time (seconds since 1/1/1904)
 111  */
 112 u_int32_t to_hfs_time(u_int32_t bsd_time)
 113 {
 114         u_int32_t hfs_time = bsd_time;
 115
 116         /* don't adjust zero - treat as uninitialzed */
 117         if (hfs_time != 0)
 118                 hfs_time += MAC_GMT_FACTOR;
 119
 120         return (hfs_time);
 121 }
 122
 123
 124 Ptr  NewPtrSysClear (Size byteCount)
 125 {
 126     Ptr         tmptr;
 127     MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK);
 128     if (tmptr)
 129         bzero(tmptr, byteCount);
 130     return tmptr;
 131 }
 132
 133
 134
 135 Ptr  NewPtr (Size byteCount)
 136 {
 137     Ptr         tmptr;
 138     MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK);
 139     return tmptr;
 140 }
 141
 142
 143 void DisposePtr (Ptr p)
 144 {
 145     FREE (p, M_TEMP);
 146 }
 147
 148
 149 void DebugStr (ConstStr255Param  debuggerMsg)
 150 {
 151     kprintf ("*** Mac OS Debugging Message: %s\n", &debuggerMsg[1]);
 152         DEBUG_BREAK;
 153 }
 154