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Add a new RPC to the process protocol to create task namespaces.
These can be used by an unprivileged process to claims the
responsibility to manage all tasks in this namespace. Any task
created in this namespace will automatically be declared a child of
the root process, and a `mach_notify_new_task' message is sent to a
given port. If the root process dies, the proc server will terminate
all tasks in the namespace.
* hurd/process.defs (proc_make_task_namespace): New RPC.
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* hurd/process.defs (proc_set_init_task): New procedure.
* hurd/process_reply.defs (proc_set_init_task): Likewise.
* hurd/process_request.defs (proc_set_init_task): Likewise.
* include/pids.h: Add HURD_PID_INIT as 1, adjust others accordingly.
* init/init.c (start_child): Register the child task.
* proc/proc.h (init_proc): New variable.
(create_startup_proc): Rename to create_init_proc.
* proc/main.c (main): Create placeholder proc object for pid 1.
* proc/mgt.c: Use init_proc instead of startup_proc, as the former is
the new root of the process tree.
(create_startup_proc): Rename to create_init_proc.
(S_proc_set_init_task): New function.
* doc/hurd.texi (Server Bootstrap): Update accordingly.
* procfs/main.c: Do not hard-code kernel pid, use pids.h instead.
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Add routines to set and query the processes start_code and end_code
locations. Any executable segments loaded from the ELF binary are in
this range.
* hurd/process.defs: Add proc_{get,set}_code.
* hurd/process_reply.defs: Add proc_{get,set}_code.
* hurd/process_request.defs: Add proc_{get,set}_code_request.
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This is based on a fragment of Guillem Jovers patch presented here:
http://lists.gnu.org/archive/html/bug-hurd/2006-02/msg00081.html
It has been refreshed, updated and the copyright year is adjusted
properly. It has been complemented with the necessary features to
address the issues the original patch set out to address, namely
that killall5 freezes the proc translator before it tries to walk
over /proc/*/stat to decide which process to kill. Prior to this
patch (and the one marking the procfs server as important
process), killall5 would deadlock trying to walk over the proc
file system.
Ironically it would not have killed any process later on even if
it had the chance, since two values obtained from /proc/*/stat
are currently hardcoded to zero in our procfs. Patches addressing
the problem as a whole are prepared and will be sent as a follow
up.
* hurd/process.defs (proc_mark_important): New routine definitions.
* hurd/process_reply.defs (proc_mark_important_request): Likewise.
* hurd/process_request.defs (proc_mark_important_request): Likewise.
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* hurd/process.defs: Reserve RPC ID for proc_set_init_task.
* hurd/process_reply.defs: Likewise.
* hurd/process_request.defs: Likewise.
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Add (and implement) a proc RPC to obtain the number of Mach ports used
by the target task.
Add infrastructure in libps to read this information.
* hurd/process.defs (proc_getnports): New RPC.
* hurd/process_request.defs (proc_getnports_request): New RPC.
* libps/procstat.c (proc_stat_set_flags): Call proc_getnports RPC if
needed.
* libps/ps.h (proc_stat): New `num_ports' field.
(PSTAT_NUM_PORTS): New macro.
(proc_stat_num_ports): New macro.
* libps/spec.c (ps_get_num_ports): New function.
(ps_num_ports_getter): New variable.
(specs): New entry for `ps_num_ports_getter'.
* proc/info.c (S_proc_getnports): New function.
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* process.defs (proc_setlogin): Remove comment about being
deprecated. It is used to create login sandboxes.
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* fs.defs (routine file_get_storage_info): Add dealloc to all out
parameters (PORTS, INTS, OFFSETS, DATA).
(routine file_get_fs_options): Add dealloc to out parameter OPTIONS.
* fsys.defs (routine fsys_get_options): Add dealloc to out
parameter OPTIONS.
* process.defs (routine proc_getprocinfo): Add dealloc to out
paramter PROCINFO.
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* process.defs: Delete proc_sethostid, proc_gethostid,
proc_sethostname, and proc_gethostname.
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(proc_get_tty): New RPC.
(proc_mark_stop, proc_mark_exit): Add SIGCODE arg.
(proc_wait): Return SIGCODE parm too.
(proc_setowner): Add CLEAR parm.
(proc_setmsgport): Return old message port with mach_port_send_t to
permit more flexibility in proc server.
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