diff options
| author | Marvin Borner | 2021-03-13 15:12:25 +0100 |
|---|---|---|
| committer | Marvin Borner | 2021-03-13 15:12:25 +0100 |
| commit | 7f2adfc77d17abf19e843ed09ccd698ee541796d (patch) | |
| tree | e78e67154d03a6acd7c91298ad821f6d96d6021c /kernel | |
| parent | 8176351e1a3d1598bedbc007897d530475942275 (diff) | |
Some security measures
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/drivers/interrupts.c | 4 | ||||
| -rw-r--r-- | kernel/features/syscall.c | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/kernel/drivers/interrupts.c b/kernel/drivers/interrupts.c index a0cd106..fe2321a 100644 --- a/kernel/drivers/interrupts.c +++ b/kernel/drivers/interrupts.c @@ -232,6 +232,10 @@ static void isr_install(void) idt_set_gate(29, (u32)isr29, 0x08, 0x8E); idt_set_gate(30, (u32)isr30, 0x08, 0x8E); idt_set_gate(31, (u32)isr31, 0x08, 0x8E); + + // Set default routines + for (u32 i = 0; i < 256; i++) + isr_routines[i] = isr_panic; } /** diff --git a/kernel/features/syscall.c b/kernel/features/syscall.c index dc49d67..68bcbaa 100644 --- a/kernel/features/syscall.c +++ b/kernel/features/syscall.c @@ -90,6 +90,7 @@ static void syscall_handler(struct regs *r) switch (r->ecx) { case SYS_BOOT_REBOOT: print("Rebooting...\n"); + outb(0x64, 0xfe); __asm__ volatile("ud2"); break; case SYS_BOOT_SHUTDOWN: @@ -97,6 +98,7 @@ static void syscall_handler(struct regs *r) outw(0xB004, 0x2000); outw(0x604, 0x2000); outw(0x4004, 0x3400); + outb(0x64, 0xfe); __asm__ volatile("ud2"); break; default: |