[PATCH] kern: new task notifications
* Makefrag.am: Add task_notify.defs.
* include/mach/gnumach.defs: Add register_new_task_notification.
* include/mach/task_notify.defs: New file.
* kern/task.c (new_task_notification): New variable.
(task_create): Send new task notifications.
(register_new_task_notification): Add server function.
* kern/task_notify.cli: New file.
---
Makefrag.am | 8 ++++++++
include/mach/gnumach.defs | 8 ++++++++
include/mach/task_notify.defs | 19 +++++++++++++++++++
kern/task.c | 26 ++++++++++++++++++++++++++
kern/task_notify.cli | 7 +++++++
5 files changed, 68 insertions(+)
create mode 100644 include/mach/task_notify.defs
create mode 100644 kern/task_notify.cli
diff --git a/Makefrag.am b/Makefrag.am
index bb08972..746d1ae 100644
--- a/Makefrag.am
+++ b/Makefrag.am
@@ -348,6 +348,7 @@ include_mach_HEADERS = \
include/mach/mach.defs \
include/mach/mach4.defs \
include/mach/gnumach.defs \
+ include/mach/task_notify.defs \
include/mach/mach_host.defs \
include/mach/mach_port.defs \
include/mach/mach_types.defs \
@@ -463,6 +464,13 @@ nodist_libkernel_a_SOURCES += \
# device/device_reply.user.defs
# device/memory_object_reply.user.defs
+nodist_lib_dep_tr_for_defs_a_SOURCES += \
+ kern/task_notify.user.defs.c
+nodist_libkernel_a_SOURCES += \
+ kern/task_notify.user.h \
+ kern/task_notify.user.c \
+ kern/task_notify.user.msgids
+
# Server stubs.
nodist_lib_dep_tr_for_defs_a_SOURCES += \
device/device.server.defs.c \
diff --git a/include/mach/gnumach.defs b/include/mach/gnumach.defs
index 7331334..848ba2a 100644
--- a/include/mach/gnumach.defs
+++ b/include/mach/gnumach.defs
@@ -37,3 +37,11 @@ type vm_cache_statistics_data_t = struct[11] of integer_t;
routine vm_cache_statistics(
target_task : vm_task_t;
out vm_cache_stats : vm_cache_statistics_data_t);
+
+/*
+ * Register a port to which a notification about newly created tasks
+ * are sent.
+ */
+routine register_new_task_notification(
+ host_priv : host_priv_t;
+ notification : mach_port_send_t);
diff --git a/include/mach/task_notify.defs b/include/mach/task_notify.defs
new file mode 100644
index 0000000..0775d00
--- /dev/null
+++ b/include/mach/task_notify.defs
@@ -0,0 +1,19 @@
+/* XXX */
+
+subsystem
+#if KERNEL_SERVER
+ KernelServer
+#endif /* KERNEL_SERVER */
+#if KERNEL_USER
+ KernelUser
+#endif /* KERNEL_USER */
+ task_notify 4400;
+
+#include <mach/std_types.defs>
+#include <mach/mach_types.defs>
+
+/* XXX */
+simpleroutine mach_notify_new_task(
+ notify : mach_port_t;
+ task : task_t;
+ parent : task_t);
diff --git a/kern/task.c b/kern/task.c
index 114dd31..4d56273 100644
--- a/kern/task.c
+++ b/kern/task.c
@@ -47,11 +47,13 @@
#include <kern/processor.h>
#include <kern/sched_prim.h> /* for thread_wakeup */
#include <kern/ipc_tt.h>
+#include <kern/task_notify.user.h>
#include <vm/vm_kern.h> /* for kernel_map, ipc_kernel_map */
#include <machine/machspl.h> /* for splsched */
task_t kernel_task = TASK_NULL;
struct kmem_cache task_cache;
+ipc_port_t new_task_notification = NULL;
extern void eml_init(void);
extern void eml_task_reference(task_t, task_t);
@@ -167,6 +169,14 @@ kern_return_t task_create(
}
#endif /* FAST_TAS */
+ if (new_task_notification != NULL) {
+ task_reference (new_task);
+ task_reference (parent_task);
+ mach_notify_new_task(new_task_notification,
+ convert_task_to_port (new_task),
+ convert_task_to_port (parent_task));
+ }
+
ipc_task_enable(new_task);
*child_task = new_task;
@@ -1212,3 +1222,19 @@ task_ras_control(
#endif
return ret;
}
+
+/* XXX */
+kern_return_t
+register_new_task_notification(
+ host_t host,
+ ipc_port_t notification)
+{
+ if (host == HOST_NULL)
+ return KERN_INVALID_ARGUMENT;
+
+ if (new_task_notification != NULL)
+ return KERN_NO_ACCESS;
+
+ new_task_notification = notification;
+ return KERN_SUCCESS;
+}
diff --git a/kern/task_notify.cli b/kern/task_notify.cli
new file mode 100644
index 0000000..c6c85d9
--- /dev/null
+++ b/kern/task_notify.cli
@@ -0,0 +1,7 @@
+/* XXX */
+
+/* This is a client presentation file. */
+
+#define KERNEL_USER 1
+
+#include <mach/task_notify.defs>
--
1.7.10.4
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