hfs-522.100.5.tar.gz

[apple/hfs.git] / core / MacOSStubs.c

diff --git a/core/MacOSStubs.c b/core/MacOSStubs.c
new file mode 100644 (file)
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--- /dev/null
+++ b/core/MacOSStubs.c
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+/*
+ * Copyright (c) 2000-2015 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/types.h>
+#include <pexpert/pexpert.h>
+#include <IOKit/IOLib.h>
+
+#include "hfs.h"
+#include "hfs_dbg.h"
+#include "FileMgrInternal.h"
+
+/* 
+ * gTimeZone should only be used for HFS volumes!
+ * It is initialized when an HFS volume is mounted.
+ */
+struct timezone gTimeZone = {8*60,1};
+
+/*
+ * GetTimeUTC - get the GMT Mac OS time (in seconds since 1/1/1904)
+ *
+ * called by the Catalog Manager when creating/updating HFS Plus records
+ */
+u_int32_t GetTimeUTC(void)
+{
+       struct timeval tv;
+
+       microtime(&tv);
+
+       return (tv.tv_sec + MAC_GMT_FACTOR);
+}
+
+
+/*
+ * LocalToUTC - convert from Mac OS local time to Mac OS GMT time.
+ * This should only be called for HFS volumes (not for HFS Plus).
+ */
+u_int32_t LocalToUTC(u_int32_t localTime)
+{
+       u_int32_t gtime = localTime;
+       
+       if (gtime != 0) {
+               gtime += (gTimeZone.tz_minuteswest * 60);
+       /*
+        * We no longer do DST adjustments here since we don't
+        * know if time supplied needs adjustment!
+        *
+        * if (gTimeZone.tz_dsttime)
+        *     gtime -= 3600;
+        */
+       }
+    return (gtime);
+}
+
+/*
+ * UTCToLocal - convert from Mac OS GMT time to Mac OS local time.
+ * This should only be called for HFS volumes (not for HFS Plus).
+ */
+u_int32_t UTCToLocal(u_int32_t utcTime)
+{
+       u_int32_t ltime = utcTime;
+       
+       if (ltime != 0) {
+               ltime -= (gTimeZone.tz_minuteswest * 60);
+       /*
+        * We no longer do DST adjustments here since we don't
+        * know if time supplied needs adjustment!
+        *
+        * if (gTimeZone.tz_dsttime)
+        *     ltime += 3600;
+        */
+       }
+    return (ltime);
+}
+
+/*
+ * to_bsd_time - convert from Mac OS time (seconds since 1/1/1904)
+ *              to BSD time (seconds since 1/1/1970)
+ */
+time_t to_bsd_time(u_int32_t hfs_time)
+{
+       u_int32_t gmt = hfs_time;
+
+       if (gmt > MAC_GMT_FACTOR)
+               gmt -= MAC_GMT_FACTOR;
+       else
+               gmt = 0;        /* don't let date go negative! */
+
+       return (time_t)gmt;
+}
+
+/*
+ * to_hfs_time - convert from BSD time (seconds since 1/1/1970)
+ *              to Mac OS time (seconds since 1/1/1904)
+ */
+u_int32_t to_hfs_time(time_t bsd_time)
+{
+       u_int32_t hfs_time = (u_int32_t)bsd_time;
+
+       /* don't adjust zero - treat as uninitialzed */
+       if (hfs_time != 0)
+               hfs_time += MAC_GMT_FACTOR;
+
+       return (hfs_time);
+}
+
+void
+DebugStr(
+       const char * debuggerMsg
+       )
+{
+    kprintf ("*** Mac OS Debugging Message: %s\n", debuggerMsg);
+#if DEBUG
+       Debugger(debuggerMsg);
+#endif
+}