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Generalize the SpinLock and move it to AK.

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Add a separate lock to protect the VFS. I think this might be a good idea.
I'm not sure it's a good approach though. I'll fiddle with it as I go along.

It's really fun to figure out all these things on my own.
This commit is contained in:
Andreas Kling 2018-10-23 23:32:53 +02:00
parent e4bfcd2346
commit 018da1be11
11 changed files with 88 additions and 203 deletions
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52
Kernel/init.cpp
View file

@ -32,53 +32,6 @@
//#define TEST_ELF_LOADER
//#define TEST_CRASHY_USER_PROCESSES
static void motd_main() NORETURN;
static void motd_main()
{
kprintf("Hello in motd_main!\n");
int fd = Userspace::open("/test.asm");
kprintf("motd: fd=%d\n", fd);
ASSERT(fd != -1);
DO_SYSCALL_A3(0x2000, 1, 2, 3);
kprintf("getuid(): %u\n", Userspace::getuid());
auto buffer = DataBuffer::createUninitialized(33);
memset(buffer->data(), 0, buffer->length());
int nread = Userspace::read(fd, buffer->data(), buffer->length() - 1);
kprintf("read(): %d\n", nread);
buffer->data()[nread] = 0;
kprintf("read(): '%s'\n", buffer->data());
for (;;) {
//kill(4, 5);
sleep(1 * TICKS_PER_SECOND);
}
}
static void syscall_test_main() NORETURN;
static void syscall_test_main()
{
kprintf("Hello in syscall_test_main!\n");
for (;;) {
Userspace::getuid();
// Userspace::yield();
//kprintf("getuid(): %u\n", Userspace::getuid());
sleep(1 * TICKS_PER_SECOND);
}
}
static void user_main() NORETURN;
static void user_main()
{
DO_SYSCALL_A3(0x3000, 2, 3, 4);
// Crash ourselves!
char* x = reinterpret_cast<char*>(0xbeefbabe);
*x = 1;
HANG;
for (;;) {
// nothing?
Userspace::sleep(1 * TICKS_PER_SECOND);
}
}
system_t system;
void banner()
@ -192,10 +145,7 @@ static void init_stage2()
auto* shTask = Task::create("/bin/sh", (uid_t)100, (gid_t)100);
//new Task(motd_main, "motd", IPC::Handle::MotdTask, Task::Ring0);
//new Task(syscall_test_main, "syscall_test", IPC::Handle::MotdTask, Task::Ring3);
kprintf("init stage2 is done!\n");
banner();
#if 0
// It would be nice to exit this process, but right now it instantiates all kinds of things.