1/* 2 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_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. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28#include <sys/param.h> 29#include <sys/systm.h> 30#include <sys/kernel.h> 31#include <sys/malloc.h> 32#include <sys/types.h> 33 34#include <pexpert/pexpert.h> 35 36#include "hfs.h" 37#include "hfs_dbg.h" 38#include "hfscommon/headers/FileMgrInternal.h" 39 40/* 41 * gTimeZone should only be used for HFS volumes! 42 * It is initialized when an HFS volume is mounted. 43 */ 44struct timezone gTimeZone = {8*60,1}; 45 46/* 47 * GetTimeUTC - get the GMT Mac OS time (in seconds since 1/1/1904) 48 * 49 * called by the Catalog Manager when creating/updating HFS Plus records 50 */ 51u_int32_t GetTimeUTC(void) 52{ 53 struct timeval tv; 54 55 microtime(&tv); 56 57 return (tv.tv_sec + MAC_GMT_FACTOR); 58} 59 60 61/* 62 * LocalToUTC - convert from Mac OS local time to Mac OS GMT time. 63 * This should only be called for HFS volumes (not for HFS Plus). 64 */ 65u_int32_t LocalToUTC(u_int32_t localTime) 66{ 67 u_int32_t gtime = localTime; 68 69 if (gtime != 0) { 70 gtime += (gTimeZone.tz_minuteswest * 60); 71 /* 72 * We no longer do DST adjustments here since we don't 73 * know if time supplied needs adjustment! 74 * 75 * if (gTimeZone.tz_dsttime) 76 * gtime -= 3600; 77 */ 78 } 79 return (gtime); 80} 81 82/* 83 * UTCToLocal - convert from Mac OS GMT time to Mac OS local time. 84 * This should only be called for HFS volumes (not for HFS Plus). 85 */ 86u_int32_t UTCToLocal(u_int32_t utcTime) 87{ 88 u_int32_t ltime = utcTime; 89 90 if (ltime != 0) { 91 ltime -= (gTimeZone.tz_minuteswest * 60); 92 /* 93 * We no longer do DST adjustments here since we don't 94 * know if time supplied needs adjustment! 95 * 96 * if (gTimeZone.tz_dsttime) 97 * ltime += 3600; 98 */ 99 } 100 return (ltime); 101} 102 103/* 104 * to_bsd_time - convert from Mac OS time (seconds since 1/1/1904) 105 * to BSD time (seconds since 1/1/1970) 106 */ 107time_t to_bsd_time(u_int32_t hfs_time) 108{ 109 u_int32_t gmt = hfs_time; 110 111 if (gmt > MAC_GMT_FACTOR) 112 gmt -= MAC_GMT_FACTOR; 113 else 114 gmt = 0; /* don't let date go negative! */ 115 116 return (time_t)gmt; 117} 118 119/* 120 * to_hfs_time - convert from BSD time (seconds since 1/1/1970) 121 * to Mac OS time (seconds since 1/1/1904) 122 */ 123u_int32_t to_hfs_time(time_t bsd_time) 124{ 125 u_int32_t hfs_time = (u_int32_t)bsd_time; 126 127 /* don't adjust zero - treat as uninitialzed */ 128 if (hfs_time != 0) 129 hfs_time += MAC_GMT_FACTOR; 130 131 return (hfs_time); 132} 133 134 135Ptr NewPtrSysClear (Size byteCount) 136{ 137 Ptr tmptr; 138 MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK); 139 if (tmptr) 140 bzero(tmptr, byteCount); 141 return tmptr; 142} 143 144 145 146Ptr NewPtr (Size byteCount) 147{ 148 Ptr tmptr; 149 MALLOC (tmptr, Ptr, byteCount, M_TEMP, M_WAITOK); 150 return tmptr; 151} 152 153 154void DisposePtr (Ptr p) 155{ 156 FREE (p, M_TEMP); 157} 158 159 160void 161DebugStr( 162 const char * debuggerMsg 163 ) 164{ 165 kprintf ("*** Mac OS Debugging Message: %s\n", debuggerMsg); 166 DEBUG_BREAK; 167} 168 169