From 40c752c4e5e3c8c20cee345790954511e9f3825b Mon Sep 17 00:00:00 2001 From: Justus Winter Date: Mon, 6 Mar 2017 00:18:21 +0100 Subject: proc: Receive new-task notifications on kernel's process port. * proc/main.c (main): Initialize 'kernel_proc' and use it to register for new-task notifications. * proc/mgt.c (S_mach_notify_new_task): Adapt receiver check. * proc/proc.h (kernel_proc): New variable. --- proc/main.c | 11 ++++++++++- proc/mgt.c | 4 +++- proc/proc.h | 1 + 3 files changed, 14 insertions(+), 2 deletions(-) (limited to 'proc') diff --git a/proc/main.c b/proc/main.c index 5a088b71..d97650fc 100644 --- a/proc/main.c +++ b/proc/main.c @@ -191,8 +191,17 @@ main (int argc, char **argv, char **envp) if (err && err != EPERM) error (0, err, "Increasing priority failed"); + /* Get a list of all tasks to find the kernel. */ + /* XXX: I't be nice if GNU Mach would hand us the task port. */ + add_tasks (MACH_PORT_NULL); + kernel_proc = pid_find (HURD_PID_KERNEL); + + /* Register for new task notifications using the kernel's process as + the port. */ err = register_new_task_notification (_hurd_host_priv, - generic_port, + kernel_proc + ? ports_get_right (kernel_proc) + : generic_port, MACH_MSG_TYPE_MAKE_SEND); if (err) error (0, err, "Registering task notifications failed"); diff --git a/proc/mgt.c b/proc/mgt.c index 8dc82f11..dc3a19ee 100644 --- a/proc/mgt.c +++ b/proc/mgt.c @@ -1055,7 +1055,9 @@ S_mach_notify_new_task (struct port_info *notify, { struct proc *parentp, *childp; - if (! notify || notify->class != generic_port_class) + if (! notify + || (kernel_proc == NULL && notify->class != generic_port_class) + || (kernel_proc != NULL && notify != (struct port_info *) kernel_proc)) return EOPNOTSUPP; parentp = task_find_nocreate (parent); diff --git a/proc/proc.h b/proc/proc.h index 2c08fd13..ffb54bf0 100644 --- a/proc/proc.h +++ b/proc/proc.h @@ -148,6 +148,7 @@ struct port_class *generic_port_class; struct port_class *exc_class; mach_port_t generic_port; /* messages not related to a specific proc */ +struct proc *kernel_proc; pthread_mutex_t global_lock; -- cgit v1.2.3