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804405e7 | 1 | /*++ |
2 | ||
3 | Copyright (c) 2004 - 2006, Intel Corporation | |
4 | All rights reserved. This program and the accompanying materials | |
5 | are licensed and made available under the terms and conditions of the BSD License | |
6 | which accompanies this distribution. The full text of the license may be found at | |
7 | http://opensource.org/licenses/bsd-license.php | |
8 | ||
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
11 | ||
12 | Module Name: | |
13 | ||
14 | UnixThunk.c | |
15 | ||
16 | Abstract: | |
17 | ||
18 | Since the SEC is the only program in our emulation we | |
19 | must use a Tiano mechanism to export APIs to other modules. | |
20 | This is the role of the EFI_UNIX_THUNK_PROTOCOL. | |
21 | ||
22 | The mUnixThunkTable exists so that a change to EFI_UNIX_THUNK_PROTOCOL | |
23 | will cause an error in initializing the array if all the member functions | |
24 | are not added. It looks like adding a element to end and not initializing | |
25 | it may cause the table to be initaliized with the members at the end being | |
26 | set to zero. This is bad as jumping to zero will crash. | |
27 | ||
28 | ||
29 | gUnix is a a public exported global that contains the initialized | |
30 | data. | |
31 | ||
32 | --*/ | |
33 | ||
34 | #include "SecMain.h" | |
35 | #include "Library/UnixLib.h" | |
36 | ||
37 | static int settimer_initialized; | |
38 | static struct timeval settimer_timeval; | |
39 | static void (*settimer_callback)(UINT64 delta); | |
40 | ||
41 | static void | |
42 | settimer_handler (int sig) | |
43 | { | |
44 | struct timeval timeval; | |
45 | UINT64 delta; | |
46 | ||
47 | gettimeofday (&timeval, NULL); | |
48 | delta = ((UINT64)timeval.tv_sec * 1000) + (timeval.tv_usec / 1000) | |
49 | - ((UINT64)settimer_timeval.tv_sec * 1000) | |
50 | - (settimer_timeval.tv_usec / 1000); | |
51 | settimer_timeval = timeval; | |
52 | if (settimer_callback) | |
53 | (*settimer_callback)(delta); | |
54 | } | |
55 | ||
56 | static | |
57 | VOID | |
58 | SetTimer (UINT64 PeriodMs, VOID (*CallBack)(UINT64 DeltaMs)) | |
59 | { | |
60 | struct itimerval timerval; | |
73aa7f04 | 61 | UINT32 remainder; |
804405e7 | 62 | |
63 | if (!settimer_initialized) { | |
64 | struct sigaction act; | |
65 | ||
66 | settimer_initialized = 1; | |
67 | act.sa_handler = settimer_handler; | |
68 | act.sa_flags = 0; | |
69 | sigemptyset (&act.sa_mask); | |
70 | if (sigaction (SIGALRM, &act, NULL) != 0) { | |
71 | printf ("SetTimer: sigaction error %s\n", strerror (errno)); | |
72 | } | |
73 | if (gettimeofday (&settimer_timeval, NULL) != 0) { | |
74 | printf ("SetTimer: gettimeofday error %s\n", strerror (errno)); | |
75 | } | |
76 | } | |
73aa7f04 | 77 | timerval.it_value.tv_sec = DivU64x32(PeriodMs, 1000); |
78 | DivU64x32Remainder(PeriodMs, 1000, &remainder); | |
79 | timerval.it_value.tv_usec = remainder * 1000; | |
80 | timerval.it_value.tv_sec = DivU64x32(PeriodMs, 1000); | |
804405e7 | 81 | timerval.it_interval = timerval.it_value; |
82 | ||
83 | if (setitimer (ITIMER_REAL, &timerval, NULL) != 0) { | |
84 | printf ("SetTimer: setitimer error %s\n", strerror (errno)); | |
85 | } | |
86 | settimer_callback = CallBack; | |
87 | } | |
88 | ||
89 | void | |
90 | msSleep (unsigned long Milliseconds) | |
91 | { | |
92 | struct timespec ts; | |
93 | ||
94 | ts.tv_sec = Milliseconds / 1000; | |
95 | ts.tv_nsec = (Milliseconds % 1000) * 1000000; | |
96 | ||
97 | while (nanosleep (&ts, &ts) != 0 && errno == EINTR) | |
98 | ; | |
99 | } | |
100 | ||
101 | void | |
102 | GetLocalTime (EFI_TIME *Time) | |
103 | { | |
104 | struct tm *tm; | |
105 | time_t t; | |
106 | ||
107 | t = time (NULL); | |
108 | tm = localtime (&t); | |
109 | ||
110 | Time->Year = 1900 + tm->tm_year; | |
be5d189f | 111 | Time->Month = tm->tm_mon + 1; |
804405e7 | 112 | Time->Day = tm->tm_mday; |
113 | Time->Hour = tm->tm_hour; | |
114 | Time->Minute = tm->tm_min; | |
115 | Time->Second = tm->tm_sec; | |
116 | Time->Nanosecond = 0; | |
117 | Time->TimeZone = timezone; | |
118 | Time->Daylight = (daylight ? EFI_TIME_ADJUST_DAYLIGHT : 0) | |
119 | | (tm->tm_isdst > 0 ? EFI_TIME_IN_DAYLIGHT : 0); | |
120 | } | |
121 | ||
122 | static void | |
123 | TzSet (void) | |
124 | { | |
125 | static int done = 0; | |
126 | if (!done) { | |
127 | tzset (); | |
128 | done = 1; | |
129 | } | |
130 | } | |
131 | ||
132 | long | |
133 | GetTimeZone(void) | |
134 | { | |
135 | TzSet (); | |
136 | return timezone; | |
137 | } | |
138 | ||
139 | int | |
140 | GetDayLight(void) | |
141 | { | |
142 | TzSet (); | |
143 | return daylight; | |
144 | } | |
145 | ||
146 | int | |
147 | GetErrno(void) | |
148 | { | |
149 | return errno; | |
150 | } | |
151 | ||
152 | extern EFI_STATUS | |
153 | UgaCreate(struct _EFI_UNIX_UGA_IO_PROTOCOL **UgaIo, CONST CHAR16 *Title); | |
154 | ||
155 | EFI_UNIX_THUNK_PROTOCOL mUnixThunkTable = { | |
156 | EFI_UNIX_THUNK_PROTOCOL_SIGNATURE, | |
157 | msSleep, /* Sleep */ | |
158 | exit, /* Exit */ | |
159 | SetTimer, | |
160 | GetLocalTime, | |
161 | gmtime, | |
162 | GetTimeZone, | |
163 | GetDayLight, | |
164 | (UnixPoll)poll, | |
165 | (UnixRead)read, | |
166 | (UnixWrite)write, | |
167 | getenv, | |
168 | (UnixOpen)open, | |
169 | lseek, | |
170 | ftruncate, | |
171 | close, | |
172 | mkdir, | |
173 | rmdir, | |
174 | unlink, | |
175 | GetErrno, | |
176 | opendir, | |
177 | rewinddir, | |
178 | readdir, | |
179 | closedir, | |
180 | stat, | |
181 | statfs, | |
182 | rename, | |
183 | mktime, | |
184 | fsync, | |
185 | chmod, | |
186 | utime, | |
187 | tcflush, | |
188 | UgaCreate, | |
189 | perror, | |
190 | ioctl, | |
191 | fcntl, | |
192 | cfsetispeed, | |
193 | cfsetospeed, | |
194 | tcgetattr, | |
195 | tcsetattr | |
196 | }; | |
197 | ||
198 | ||
199 | EFI_UNIX_THUNK_PROTOCOL *gUnix = &mUnixThunkTable; |