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Kernel/LibC: Add SYS_KILL/kill()

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Bananymous
2023-07-21 19:27:38 +03:00
parent b78596dcf4
commit 10169d773d
7 changed files with 61 additions and 3 deletions
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2
kernel/include/kernel/Process.h
View File

@@ -101,7 +101,7 @@ namespace Kernel
BAN::ErrorOr<long> sys_free(void*);
BAN::ErrorOr<long> sys_signal(int, void (*)(int));
BAN::ErrorOr<long> sys_kill(pid_t pid, int signal);
BAN::ErrorOr<long> sys_kill(pid_t pid, int signal, uintptr_t& return_rsp, uintptr_t& return_rip);
BAN::ErrorOr<long> sys_raise(int signal, uintptr_t& return_rsp, uintptr_t& return_rip);
BAN::ErrorOr<long> sys_termid(char*) const;

25
kernel/kernel/Process.cpp
View File

@@ -789,6 +789,31 @@ namespace Kernel
return 0;
}
BAN::ErrorOr<long> Process::sys_kill(pid_t pid, int signal, uintptr_t& return_rsp, uintptr_t& return_rip)
{
if (pid <= 0)
return BAN::Error::from_errno(ENOTSUP);
if (signal != 0 && (signal < _SIGMIN || signal > _SIGMAX))
return BAN::Error::from_errno(EINVAL);
if (pid == this->pid())
return sys_raise(signal, return_rsp, return_rip);
LockGuard process_guard(s_process_lock);
CriticalScope _;
for (auto* process : s_processes)
{
if (process->pid() == pid)
{
if (signal)
process->m_threads.front()->m_signal_queue.push(signal);
return 0;
}
}
return BAN::Error::from_errno(ESRCH);
}
BAN::ErrorOr<long> Process::sys_raise(int signal, uintptr_t& return_rsp, uintptr_t& return_rip)
{
if (signal < _SIGMIN || signal > _SIGMAX)

3
kernel/kernel/Syscall.cpp
View File

@@ -143,6 +143,9 @@ namespace Kernel
case SYS_RAISE:
ret = Process::current().sys_raise((int)arg1, interrupt_stack.rsp, interrupt_stack.rip);
break;
case SYS_KILL:
ret = Process::current().sys_kill((pid_t)arg1, (int)arg2, interrupt_stack.rsp, interrupt_stack.rip);
break;
default:
dwarnln("Unknown syscall {}", syscall);
break;