bsd/hfs/MacOSStubs.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, 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 #include <sys/param.h>
  24 #include <sys/systm.h>
  25 #include <sys/kernel.h>
  26 #include <sys/malloc.h>
  27 #include <sys/types.h>
  28
  29 #include "hfs.h"
  30 #include "hfs_dbg.h"
  31 #include "hfscommon/headers/FileMgrInternal.h"
  32
  33
  34 /*
  35  * gTimeZone should only be used for HFS volumes!
  36  * It is initialized when an HFS volume is mounted.
  37  */
  38 struct timezone gTimeZone = {8*60,1};
  39
  40 /*
  41  * GetTimeUTC - get the GMT Mac OS time (in seconds since 1/1/1904)
  42  *
  43  * called by the Catalog Manager when creating/updating HFS Plus records
  44  */
  45 UInt32 GetTimeUTC(void)
  46 {
  47         struct timeval tv;
  48
  49         microtime(&tv);
  50
  51         return (tv.tv_sec + MAC_GMT_FACTOR);
  52 }
  53
  54
  55 /*
  56  * LocalToUTC - convert from Mac OS local time to Mac OS GMT time.
  57  * This should only be called for HFS volumes (not for HFS Plus).
  58  */
  59 UInt32 LocalToUTC(UInt32 localTime)
  60 {
  61         UInt32 gtime = localTime;
  62
  63         if (gtime != 0) {
  64                 gtime += (gTimeZone.tz_minuteswest * 60);
  65         /*
  66          * We no longer do DST adjustments here since we don't
  67          * know if time supplied needs adjustment!
  68          *
  69          * if (gTimeZone.tz_dsttime)
  70          *     gtime -= 3600;
  71          */
  72         }
  73     return (gtime);
  74 }
  75
  76 /*
  77  * UTCToLocal - convert from Mac OS GMT time to Mac OS local time.
  78  * This should only be called for HFS volumes (not for HFS Plus).
  79  */
  80 UInt32 UTCToLocal(UInt32 utcTime)
  81 {
  82         UInt32 ltime = utcTime;
  83
  84         if (ltime != 0) {
  85                 ltime -= (gTimeZone.tz_minuteswest * 60);
  86         /*
  87          * We no longer do DST adjustments here since we don't
  88          * know if time supplied needs adjustment!
  89          *
  90          * if (gTimeZone.tz_dsttime)
  91          *     ltime += 3600;
  92          */
  93         }
  94     return (ltime);
  95 }
  96
  97 /*
  98  * to_bsd_time - convert from Mac OS time (seconds since 1/1/1904)
  99  *               to BSD time (seconds since 1/1/1970)
 100  */
 101 time_t to_bsd_time(u_int32_t hfs_time)
 102 {
 103         u_int32_t gmt = hfs_time;
 104
 105         if (gmt > MAC_GMT_FACTOR)
 106                 gmt -= MAC_GMT_FACTOR;
 107         else
 108                 gmt = 0;        /* don't let date go negative! */
 109
 110         return (time_t)gmt;
 111 }
 112
 113 /*
 114  * to_hfs_time - convert from BSD time (seconds since 1/1/1970)
 115  *               to Mac OS time (seconds since 1/1/1904)
 116  */
 117 u_int32_t to_hfs_time(time_t bsd_time)
 118 {
 119         u_int32_t hfs_time = (u_int32_t)bsd_time;
 120
 121         /* don't adjust zero - treat as uninitialzed */
 122         if (hfs_time != 0)
 123                 hfs_time += MAC_GMT_FACTOR;
 124
 125         return (hfs_time);
 126 }
 127
 128
 129 Ptr  NewPtrSysClear (Size byteCount)
 130 {
 131     Ptr         tmptr;
 132     MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK);
 133     if (tmptr)
 134         bzero(tmptr, byteCount);
 135     return tmptr;
 136 }
 137
 138
 139
 140 Ptr  NewPtr (Size byteCount)
 141 {
 142     Ptr         tmptr;
 143     MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK);
 144     return tmptr;
 145 }
 146
 147
 148 void DisposePtr (Ptr p)
 149 {
 150     FREE (p, M_TEMP);
 151 }
 152
 153
 154 void DebugStr (ConstStr255Param  debuggerMsg)
 155 {
 156     kprintf ("*** Mac OS Debugging Message: %s\n", &debuggerMsg[1]);
 157         DEBUG_BREAK;
 158 }
 159