From e05e74e1a56c8e54866228c1f56acd0b4571d747 Mon Sep 17 00:00:00 2001
From: Matheus <matheusuky@gmail.com>
Date: Wed, 5 Jul 2023 22:13:29 -0300
Subject: [PATCH] syscalls: clockget

---
 kernel-src/arch/x86-64/syscall.asm     |  4 ++-
 kernel-src/arch/x86-64/syscalllog.c    |  8 ++++--
 kernel-src/sys/syscalls/clockget.c     | 40 ++++++++++++++++++++++++++
 patches/mlibc/jinx-working-patch.patch | 19 ++++++++----
 4 files changed, 61 insertions(+), 10 deletions(-)
 create mode 100644 kernel-src/sys/syscalls/clockget.c

diff --git a/kernel-src/arch/x86-64/syscall.asm b/kernel-src/arch/x86-64/syscall.asm
index ddb05e30..54219254 100644
--- a/kernel-src/arch/x86-64/syscall.asm
+++ b/kernel-src/arch/x86-64/syscall.asm
@@ -27,6 +27,7 @@ extern syscall_faccessat
 extern syscall_unlinkat
 extern syscall_ioctl
 extern syscall_mkdirat
+extern syscall_clockget
 syscalltab:
 dq syscall_print
 dq syscall_mmap
@@ -56,7 +57,8 @@ dq syscall_faccessat
 dq syscall_unlinkat
 dq syscall_ioctl
 dq syscall_mkdirat
-syscallcount equ 28
+dq syscall_clockget
+syscallcount equ 29
 section .text
 global arch_syscall_entry
 ; on entry:
diff --git a/kernel-src/arch/x86-64/syscalllog.c b/kernel-src/arch/x86-64/syscalllog.c
index b0cbd496..825d419f 100644
--- a/kernel-src/arch/x86-64/syscalllog.c
+++ b/kernel-src/arch/x86-64/syscalllog.c
@@ -4,7 +4,7 @@
 
 #ifdef SYSCALL_LOGGING
 
-#define SYSCALL_COUNT 28
+#define SYSCALL_COUNT 29
 #define LOGSTR(x) arch_e9_puts(x)
 
 static char *name[] = {
@@ -35,7 +35,8 @@ static char *name[] = {
 	"faccessat",
 	"unlinkat",
 	"ioctl",
-	"mkdirat"
+	"mkdirat",
+	"clockget"
 };
 
 static char *args[] = {
@@ -66,7 +67,8 @@ static char *args[] = {
 	"dirfd %d pathname %s mode %d flags %d", // faccessat
 	"dirfd %d pathname %d flags %d", // unlinkat
 	"fd %d request %lu argument %d", // ioctl
-	"dirfd %d path %s mode %o" // mkdirat
+	"dirfd %d path %s mode %o", // mkdirat
+	"clockid %d timespec %p" // clockget
 };
 
 #endif
diff --git a/kernel-src/sys/syscalls/clockget.c b/kernel-src/sys/syscalls/clockget.c
new file mode 100644
index 00000000..1923436a
--- /dev/null
+++ b/kernel-src/sys/syscalls/clockget.c
@@ -0,0 +1,40 @@
+#include <kernel/syscalls.h>
+#include <kernel/abi.h>
+#include <time.h>
+#include <kernel/timekeeper.h>
+#include <kernel/vmm.h>
+
+#define CLOCK_REALTIME 0
+#define CLOCK_BOOTTIME 7
+
+syscallret_t syscall_clockget(context_t *, int clockid, timespec_t *tp){
+	syscallret_t ret = {
+		.ret = -1
+	};
+
+	if ((void *)tp > USERSPACE_END) {
+		ret.errno = EFAULT;
+		return ret;
+	}
+
+	switch (clockid) {
+		case CLOCK_REALTIME:
+			// TODO safe memcpy
+			*tp = timekeeper_time();
+			ret.errno = 0;
+			break;
+		case CLOCK_BOOTTIME:
+			// TODO safe memcpy
+			*tp = timekeeper_timefromboot();
+			ret.errno = 0;
+			break;
+		default:
+			ret.errno = EINVAL;
+			break;
+	}
+
+	ret.ret = ret.errno ? -1 : 0;
+
+	return ret;
+
+}
diff --git a/patches/mlibc/jinx-working-patch.patch b/patches/mlibc/jinx-working-patch.patch
index c047a2c6..0d4ba146 100644
--- a/patches/mlibc/jinx-working-patch.patch
+++ b/patches/mlibc/jinx-working-patch.patch
@@ -133,10 +133,10 @@ index 0000000..e5b087a
 +
 diff --git mlibc-workdir/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
 new file mode 100644
-index 0000000..28f6942
+index 0000000..97b963a
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
-@@ -0,0 +1,295 @@
+@@ -0,0 +1,301 @@
 +#include <bits/ensure.h>
 +#include <mlibc/debug.hpp>
 +#include <mlibc/all-sysdeps.hpp>
@@ -347,10 +347,12 @@ index 0000000..28f6942
 +	}
 +
 +	int sys_futex_wait(int *pointer, int expected, const struct timespec *time) {
++		mlibc::infoLogger() << "mlibc: futex wait is a stub" << frg::endlog;
 +		// TODO UNSTUB
 +		return ENOSYS;
 +	}
 +	int sys_futex_wake(int *pointer) {
++		mlibc::infoLogger() << "mlibc: futex wake is a stub" << frg::endlog;
 +		// TODO UNSTUB
 +		return ENOSYS;
 +	}
@@ -426,8 +428,12 @@ index 0000000..28f6942
 +	}
 +
 +	int sys_clock_get(int clock, time_t *secs, long *nanos) {
-+		// TODO UNSTUB
-+		return ENOSYS;
++		struct timespec ts;
++		long ret;
++		int err = syscall(SYSCALL_CLOCKGET, &ret, clock, (uint64_t)&ts);
++		*secs = ts.tv_sec;
++		*nanos = ts.tv_nsec;
++		return err;
 +	}
 +
 +} // namespace mlibc
@@ -451,10 +457,10 @@ index 0000000..990eca0
 +#endif
 diff --git mlibc-workdir/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
 new file mode 100644
-index 0000000..a569d38
+index 0000000..96da753
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
-@@ -0,0 +1,51 @@
+@@ -0,0 +1,52 @@
 +#ifndef _SYSCALL_H_INCLUDE
 +#define _SYSCALL_H_INCLUDE
 +
@@ -486,6 +492,7 @@ index 0000000..a569d38
 +#define SYSCALL_UNLINKAT 25
 +#define SYSCALL_IOCTL 26
 +#define SYSCALL_MKDIRAT 27
++#define SYSCALL_CLOCKGET 28
 +
 +#include <stddef.h>
 +#include <stdint.h>