diff options
Diffstat (limited to 'UnixPkg/Sec/UnixThunk.c')
| -rw-r--r-- | UnixPkg/Sec/UnixThunk.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/UnixPkg/Sec/UnixThunk.c b/UnixPkg/Sec/UnixThunk.c new file mode 100644 index 0000000000..500568ad52 --- /dev/null +++ b/UnixPkg/Sec/UnixThunk.c @@ -0,0 +1,197 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +All rights reserved. This program and the accompanying materials +are licensed and made available under the terms and conditions of the BSD License +which accompanies this distribution. The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +Module Name: + + UnixThunk.c + +Abstract: + + Since the SEC is the only program in our emulation we + must use a Tiano mechanism to export APIs to other modules. + This is the role of the EFI_UNIX_THUNK_PROTOCOL. + + The mUnixThunkTable exists so that a change to EFI_UNIX_THUNK_PROTOCOL + will cause an error in initializing the array if all the member functions + are not added. It looks like adding a element to end and not initializing + it may cause the table to be initaliized with the members at the end being + set to zero. This is bad as jumping to zero will crash. + + + gUnix is a a public exported global that contains the initialized + data. + +--*/ + +#include "SecMain.h" +#include "Library/UnixLib.h" + +static int settimer_initialized; +static struct timeval settimer_timeval; +static void (*settimer_callback)(UINT64 delta); + +static void +settimer_handler (int sig) +{ + struct timeval timeval; + UINT64 delta; + + gettimeofday (&timeval, NULL); + delta = ((UINT64)timeval.tv_sec * 1000) + (timeval.tv_usec / 1000) + - ((UINT64)settimer_timeval.tv_sec * 1000) + - (settimer_timeval.tv_usec / 1000); + settimer_timeval = timeval; + if (settimer_callback) + (*settimer_callback)(delta); +} + +static +VOID +SetTimer (UINT64 PeriodMs, VOID (*CallBack)(UINT64 DeltaMs)) +{ + struct itimerval timerval; + + if (!settimer_initialized) { + struct sigaction act; + + settimer_initialized = 1; + act.sa_handler = settimer_handler; + act.sa_flags = 0; + sigemptyset (&act.sa_mask); + if (sigaction (SIGALRM, &act, NULL) != 0) { + printf ("SetTimer: sigaction error %s\n", strerror (errno)); + } + if (gettimeofday (&settimer_timeval, NULL) != 0) { + printf ("SetTimer: gettimeofday error %s\n", strerror (errno)); + } + } + timerval.it_value.tv_sec = PeriodMs / 1000; + timerval.it_value.tv_usec = (PeriodMs % 1000) * 1000; + timerval.it_value.tv_sec = PeriodMs / 1000; + timerval.it_interval = timerval.it_value; + + if (setitimer (ITIMER_REAL, &timerval, NULL) != 0) { + printf ("SetTimer: setitimer error %s\n", strerror (errno)); + } + settimer_callback = CallBack; +} + +void +msSleep (unsigned long Milliseconds) +{ + struct timespec ts; + + ts.tv_sec = Milliseconds / 1000; + ts.tv_nsec = (Milliseconds % 1000) * 1000000; + + while (nanosleep (&ts, &ts) != 0 && errno == EINTR) + ; +} + +void +GetLocalTime (EFI_TIME *Time) +{ + struct tm *tm; + time_t t; + + t = time (NULL); + tm = localtime (&t); + + Time->Year = 1900 + tm->tm_year; + Time->Month = tm->tm_mon; + Time->Day = tm->tm_mday; + Time->Hour = tm->tm_hour; + Time->Minute = tm->tm_min; + Time->Second = tm->tm_sec; + Time->Nanosecond = 0; + Time->TimeZone = timezone; + Time->Daylight = (daylight ? EFI_TIME_ADJUST_DAYLIGHT : 0) + | (tm->tm_isdst > 0 ? EFI_TIME_IN_DAYLIGHT : 0); +} + +static void +TzSet (void) +{ + static int done = 0; + if (!done) { + tzset (); + done = 1; + } +} + +long +GetTimeZone(void) +{ + TzSet (); + return timezone; +} + +int +GetDayLight(void) +{ + TzSet (); + return daylight; +} + +int +GetErrno(void) +{ + return errno; +} + +extern EFI_STATUS +UgaCreate(struct _EFI_UNIX_UGA_IO_PROTOCOL **UgaIo, CONST CHAR16 *Title); + +EFI_UNIX_THUNK_PROTOCOL mUnixThunkTable = { + EFI_UNIX_THUNK_PROTOCOL_SIGNATURE, + msSleep, /* Sleep */ + exit, /* Exit */ + SetTimer, + GetLocalTime, + gmtime, + GetTimeZone, + GetDayLight, + (UnixPoll)poll, + (UnixRead)read, + (UnixWrite)write, + getenv, + (UnixOpen)open, + lseek, + ftruncate, + close, + mkdir, + rmdir, + unlink, + GetErrno, + opendir, + rewinddir, + readdir, + closedir, + stat, + statfs, + rename, + mktime, + fsync, + chmod, + utime, + tcflush, + UgaCreate, + perror, + ioctl, + fcntl, + cfsetispeed, + cfsetospeed, + tcgetattr, + tcsetattr +}; + + +EFI_UNIX_THUNK_PROTOCOL *gUnix = &mUnixThunkTable; |