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1 | /** @file\r | |
2 | Transformations between the EFI_TIME structure and struct tm or time_t.\r | |
3 | \r | |
4 | Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are licensed and made available under\r | |
6 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
7 | The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php.\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | #include <Uefi.h>\r | |
15 | \r | |
16 | #include <LibConfig.h>\r | |
17 | \r | |
18 | #include <time.h>\r | |
19 | #include "tzfile.h"\r | |
20 | #include <MainData.h>\r | |
21 | \r | |
22 | /** Convert an EFI_TIME structure into a C Standard tm structure.\r | |
23 | \r | |
24 | @param[in] ET Pointer to the EFI_TIME structure to convert.\r | |
25 | @param[out] BT Pointer to the tm structure to receive the converted time.\r | |
26 | */\r | |
27 | void\r | |
28 | Efi2Tm(\r | |
29 | IN EFI_TIME *ET,\r | |
30 | OUT struct tm *BT\r | |
31 | )\r | |
32 | {\r | |
33 | // Convert EFI time to broken-down time.\r | |
34 | BT->tm_year = ET->Year - TM_YEAR_BASE;\r | |
35 | BT->tm_mon = ET->Month - 1; // BD time is zero based, EFI is 1 based\r | |
36 | BT->tm_mday = ET->Day;\r | |
37 | BT->tm_hour = ET->Hour;\r | |
38 | BT->tm_min = ET->Minute;\r | |
39 | BT->tm_sec = ET->Second;\r | |
40 | BT->tm_isdst = -1;\r | |
41 | BT->tm_zoneoff = ET->TimeZone;\r | |
42 | BT->tm_daylight = ET->Daylight;\r | |
43 | BT->tm_Nano = ET->Nanosecond;\r | |
44 | }\r | |
45 | \r | |
46 | /** Convert an EFI_TIME structure into a time_t value.\r | |
47 | \r | |
48 | @param[in] EfiBDtime Pointer to the EFI_TIME structure to convert.\r | |
49 | \r | |
50 | @return The EFI_TIME converted into a time_t value.\r | |
51 | */\r | |
52 | time_t\r | |
53 | Efi2Time(\r | |
54 | IN EFI_TIME *EfiBDtime\r | |
55 | )\r | |
56 | {\r | |
57 | Efi2Tm( EfiBDtime, &gMD->BDTime);\r | |
58 | \r | |
59 | return mktime( &gMD->BDTime);\r | |
60 | }\r | |
61 | \r | |
62 | /** Convert a C Standard tm structure into an EFI_TIME structure.\r | |
63 | \r | |
64 | @param[in] BT Pointer to the tm structure to convert.\r | |
65 | @param[out] ET Pointer to an EFI_TIME structure to receive the converted time.\r | |
66 | */\r | |
67 | void\r | |
68 | Tm2Efi(\r | |
69 | IN struct tm *BT,\r | |
70 | OUT EFI_TIME *ET\r | |
71 | )\r | |
72 | {\r | |
73 | ET->Year = (UINT16)BT->tm_year + TM_YEAR_BASE;\r | |
74 | ET->Month = (UINT8)BT->tm_mon + 1;\r | |
75 | ET->Day = (UINT8)BT->tm_mday;\r | |
76 | ET->Hour = (UINT8)BT->tm_hour;\r | |
77 | ET->Minute = (UINT8)BT->tm_min;\r | |
78 | ET->Second = (UINT8)BT->tm_sec;\r | |
79 | ET->Nanosecond = (UINT32)BT->tm_Nano;\r | |
80 | ET->TimeZone = (INT16)BT->tm_zoneoff;\r | |
81 | ET->Daylight = (UINT8)BT->tm_daylight;\r | |
82 | }\r | |
83 | \r | |
84 | /** Convert a time_t value into an EFI_TIME structure.\r | |
85 | \r | |
86 | @param[in] CalTime Calendar time as a time_t value.\r | |
87 | \r | |
88 | @return Returns a newly malloced EFI_TIME structure containing\r | |
89 | the converted calendar time.\r | |
90 | \r | |
91 | @post It is the responsibility of the caller to free the\r | |
92 | returned structure before the application exits.\r | |
93 | */\r | |
94 | EFI_TIME*\r | |
95 | Time2Efi(\r | |
96 | IN time_t CalTime\r | |
97 | )\r | |
98 | {\r | |
99 | struct tm *IT;\r | |
100 | EFI_TIME *ET = NULL;\r | |
101 | \r | |
102 | IT = gmtime(&CalTime);\r | |
103 | if(IT != NULL) {\r | |
104 | ET = malloc(sizeof(EFI_TIME));\r | |
105 | if(ET != NULL) {\r | |
106 | Tm2Efi(IT, ET);\r | |
107 | }\r | |
108 | }\r | |
109 | return ET;\r | |
110 | }\r |