/*
* Clean up
*/
void
__exception_exit(void)
{
#ifdef _REENTRANT
mutex_destroy(&__sig_lock);
#endif
exception_setup(NULL);
}
/*
* Initialize exception
*/
void
__exception_init(void)
{
int i;
#ifdef _REENTRANT
mutex_init(&__sig_lock);
#endif
exception_setup(NULL);
__sig_mask = 0;
__sig_pending = 0;
for (i = 0; i < NSIG; i++) {
__sig_act[i].sa_flags = 0;
__sig_act[i].sa_handler = SIG_DFL;
}
/* Install exception handler */
exception_setup(__exception_handler);
}
/*
* Initialize TTY.
*
* Since we manage the process group only in the process
* server, the TTY driver can not know anything about the
* process group. However, POSIX specification requires TTY
* driver to send a signal to the specific process group.
* So, we will catch all TTY related signals by this server
* and forward them to the actual process or process group.
*/
void
tty_init(void)
{
task_t self;
/*
* Setup exception to receive signals from tty.
*/
exception_setup(exception_handler);
if (device_open("tty", 0, &ttydev) != 0)
ttydev = DEVICE_NULL;
else {
/*
* Notify the TTY driver to send all tty related
* signals in system to this task.
*/
self = task_self();
device_ioctl(ttydev, TIOCSETSIGT, &self);
}
}
/*
* Initialize TTY.
*
* Since we manage the process group only in the process
* server, the TTY driver can not know anything about the
* process group. However, POSIX specification requires TTY
* driver to send a signal to the specific process group.
* So, we will catch all TTY related signals by this server
* and forward them to the actual process or process group.
*/
void
tty_init(void)
{
task_t self;
/*
* Setup exception to receive signals from tty.
*/
exception_setup(exception_handler);
if (device_open("tty", 0, &ttydev) != 0) {
DPRINTF(("proc: no tty found\n"));
ttydev = NODEV;
} else {
/*
* Notify the TTY driver to send all tty related
* signals in system to this task.
*/
self = task_self();
device_ioctl(ttydev, TIOCSETSIGT, &self);
}
}
static void
pow_init(void)
{
task_t self;
/*
* Set default power actions
*/
pmact.pwrbtn = PWR_OFF;
pmact.slpbtn = PWR_SUSPEND;
pmact.lcdclose = PWR_SUSPEND;
pmact.lowbatt = PWR_OFF;
/*
* Connect to the pm driver to get all power events.
*/
if (device_open("pm", 0, &pmdev) != 0) {
/*
* Bad config...
*/
sys_panic("pow: no pm driver");
}
self = task_self();
device_ioctl(pmdev, PMIOC_CONNECT, &self);
/*
* Setup exception to receive signals from pm driver.
*/
exception_setup(exception_handler);
/*
* Start power thread.
*/
if (run_thread(power_thread))
sys_panic("pow_init");
}
/*
* Main routine for exec service.
*/
int
main(int argc, char *argv[])
{
const struct msg_map *map;
struct msg *msg;
object_t obj;
int error;
sys_log("Starting exec server\n");
/* Boost thread priority. */
thread_setpri(thread_self(), PRI_EXEC);
/*
* Set capability for us
*/
bind_cap("/boot/exec", task_self());
/*
* Setup exception handler.
*/
exception_setup(exception_handler);
/*
* Initialize exec loaders.
*/
exec_init();
/*
* Create an object to expose our service.
*/
error = object_create("!exec", &obj);
if (error)
sys_panic("fail to create object");
msg = malloc(MAX_EXECMSG);
ASSERT(msg);
/*
* Message loop
*/
for (;;) {
/*
* Wait for an incoming request.
*/
error = msg_receive(obj, msg, MAX_EXECMSG);
if (error)
continue;
error = EINVAL;
map = &execmsg_map[0];
while (map->code != 0) {
if (map->code == msg->hdr.code) {
error = (*map->func)(msg);
break;
}
map++;
}
#ifdef DEBUG_EXEC
if (error)
DPRINTF(("exec: msg error=%d code=%x\n",
error, msg->hdr.code));
#endif
/*
* Reply to the client.
*
* Note: If EXEC_EXECVE request is handled successfully,
* the receiver task has been terminated here. But, we
* have to call msg_reply() even in such case to reset
* our IPC state.
*/
msg->hdr.status = error;
error = msg_reply(obj, msg, MAX_EXECMSG);
}
}
