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Kernel+SystemServer: Mount filesystems and start TTYServer in userspace

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This commit is contained in:
Sergey Bugaev 2019-08-17 12:33:39 +03:00 • committed by Andreas Kling
parent f95c264f17
commit 6778abb999
3 changed files with 36 additions and 44 deletions
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4
Base/etc/fstab Normal file
View file

@ -0,0 +1,4 @@
/dev/hda / ext2
proc /proc proc
devpts /dev/pts devpts
tmp /tmp tmp

37
Kernel/init.cpp
View file

@ -118,20 +118,6 @@ VFS* vfs;
load_ksyms();
dbgprintf("Loaded ksyms\n");
// TODO: we should mount these from SystemServer
auto procfs = ProcFS::create();
procfs->initialize();
vfs->mount(procfs, "/proc");
auto devptsfs = DevPtsFS::create();
devptsfs->initialize();
vfs->mount(devptsfs, "/dev/pts");
auto tmpfs = TmpFS::create();
if (!tmpfs->initialize())
ASSERT_NOT_REACHED();
vfs->mount(move(tmpfs), "/tmp");
// Now, detect whether or not there are actually any floppy disks attached to the system
u8 detect = CMOS::read(0x10);
RefPtr<FloppyDiskDevice> fd0;
@ -152,34 +138,13 @@ VFS* vfs;
int error;
auto* system_server_process = Process::create_user_process("/bin/SystemServer", (uid_t)100, (gid_t)100, (pid_t)0, error, {}, {}, tty0);
auto* system_server_process = Process::create_user_process("/bin/SystemServer", (uid_t)0, (gid_t)0, (pid_t)0, error, {}, {}, tty0);
if (error != 0) {
kprintf("init_stage2: error spawning SystemServer: %d\n", error);
hang();
}
system_server_process->set_priority(Process::HighPriority);
auto* tty1_process = Process::create_user_process("/bin/TTYServer", (uid_t)0, (gid_t)0, (pid_t)0, error, { "/bin/TTYServer", "tty1" }, {}, tty1);
if (error != 0) {
kprintf("init_stage2: error spawning TTYServer for tty1: %d\n", error);
hang();
}
tty1_process->set_priority(Process::HighPriority);
auto* tty2_process = Process::create_user_process("/bin/TTYServer", (uid_t)0, (gid_t)0, (pid_t)0, error, { "/bin/TTYServer", "tty2" }, {}, tty2);
if (error != 0) {
kprintf("init_stage2: error spawning TTYServer for tty2: %d\n", error);
hang();
}
tty2_process->set_priority(Process::HighPriority);
auto* tty3_process = Process::create_user_process("/bin/TTYServer", (uid_t)0, (gid_t)0, (pid_t)0, error, { "/bin/TTYServer", "tty3" }, {}, tty3);
if (error != 0) {
kprintf("init_stage2: error spawning TTYServer for tty3: %d\n", error);
hang();
}
tty3_process->set_priority(Process::HighPriority);
current->process().sys$exit(0);
ASSERT_NOT_REACHED();
}

39
Servers/SystemServer/main.cpp
View file

@ -1,13 +1,14 @@
#include <AK/Assertions.h>
#include <LibCore/CFile.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
void start_process(const char* prog, int prio)
void start_process(const char* prog, const char* arg, int prio, const char* tty = nullptr)
{
pid_t pid = 0;
@ -32,9 +33,17 @@ void start_process(const char* prog, int prio)
int ret = sched_setparam(pid, &p);
ASSERT(ret == 0);
if (tty != nullptr) {
close(0);
ASSERT(open(tty, O_RDWR) == 0);
dup2(0, 1);
dup2(0, 2);
}
char* progv[256];
progv[0] = const_cast<char*>(prog);
progv[1] = nullptr;
progv[1] = const_cast<char*>(arg);
progv[2] = nullptr;
ret = execv(prog, progv);
if (ret < 0) {
dbgprintf("Exec %s failed! %s", prog, strerror(errno));
@ -72,12 +81,26 @@ int main(int, char**)
{
int lowest_prio = sched_get_priority_min(SCHED_OTHER);
int highest_prio = sched_get_priority_max(SCHED_OTHER);
start_process("/bin/LookupServer", lowest_prio);
start_process("/bin/WindowServer", highest_prio);
start_process("/bin/AudioServer", highest_prio);
start_process("/bin/Taskbar", highest_prio);
start_process("/bin/Terminal", highest_prio - 1);
start_process("/bin/Launcher", highest_prio);
// Mount the filesystems.
start_process("/bin/mount", "-a", highest_prio);
wait(nullptr);
start_process("/bin/TTYServer", "tty0", highest_prio, "/dev/tty0");
start_process("/bin/TTYServer", "tty1", highest_prio, "/dev/tty1");
start_process("/bin/TTYServer", "tty2", highest_prio, "/dev/tty2");
start_process("/bin/TTYServer", "tty3", highest_prio, "/dev/tty3");
// Drop privileges.
setuid(100);
setgid(100);
start_process("/bin/LookupServer", nullptr, lowest_prio);
start_process("/bin/WindowServer", nullptr, highest_prio);
start_process("/bin/AudioServer", nullptr, highest_prio);
start_process("/bin/Taskbar", nullptr, highest_prio);
start_process("/bin/Terminal", nullptr, highest_prio - 1);
start_process("/bin/Launcher", nullptr, highest_prio);
// This won't return if we're in test mode.
check_for_test_mode();