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Kernel: Add new syscall to allow changing the system date

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Liav A 2020-03-13 01:17:14 +02:00 committed by Andreas Kling
parent 4fcc10c6c3
commit 4484513b45
Notes: sideshowbarker 2024-07-19 08:14:22 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/4484513b45c
Pull-request: https://github.com/SerenityOS/serenity/pull/1396
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/shannonbooth ✅
3 changed files with 19 additions and 0 deletions
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17
Kernel/Process.cpp
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@ -4283,6 +4283,23 @@ int Process::sys$clock_gettime(clockid_t clock_id, timespec* user_ts)
return 0;
}
int Process::sys$clock_settime(clockid_t clock_id, timespec* user_ts)
{
SmapDisabler disabler;
REQUIRE_PROMISE(stdio);
if (!validate_write_typed(user_ts))
return -EFAULT;
switch (clock_id) {
case CLOCK_REALTIME:
TimeManagement::the().set_epoch_time(user_ts->tv_sec);
break;
default:
return -EINVAL;
}
return 0;
}
int Process::sys$clock_nanosleep(const Syscall::SC_clock_nanosleep_params* user_params)
{
REQUIRE_PROMISE(stdio);

1
Kernel/Process.h
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@ -213,6 +213,7 @@ public:
int sys$usleep(useconds_t usec);
int sys$gettimeofday(timeval*);
int sys$clock_gettime(clockid_t, timespec*);
int sys$clock_settime(clockid_t, timespec*);
int sys$clock_nanosleep(const Syscall::SC_clock_nanosleep_params*);
int sys$gethostname(char*, ssize_t);
int sys$uname(utsname*);

1
Kernel/Syscall.h
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@ -158,6 +158,7 @@ namespace Kernel {
__ENUMERATE_SYSCALL(getrandom) \
__ENUMERATE_SYSCALL(setkeymap) \
__ENUMERATE_SYSCALL(clock_gettime) \
__ENUMERATE_SYSCALL(clock_settime) \
__ENUMERATE_SYSCALL(clock_nanosleep) \
__ENUMERATE_SYSCALL(join_thread) \
__ENUMERATE_SYSCALL(module_load) \