add patch series

1 files changed, 493 insertions, 0 deletions

diff --git a/debian/patches/0003-trans-add-startup-standalone-XXX.patch b/debian/patches/0003-trans-add-startup-standalone-XXX.patch
new file mode 100644
index 00000000..c187c28f
--- /dev/null
+++ b/debian/patches/0003-trans-add-startup-standalone-XXX.patch
@@ -0,0 +1,493 @@
+From a8c0a69d53d3dc310536a338e6d3ab34f75bb9cb Mon Sep 17 00:00:00 2001
+From: Justus Winter <4winter@informatik.uni-hamburg.de>
+Date: Tue, 13 Jan 2015 19:01:50 +0100
+Subject: [PATCH hurd 3/5] trans: add `startup-standalone' XXX
+
+Provide a stripped-down version of the startup translator that
+supervises core servers and handles system shutdown.
+
+* trans/startup-standalone.c: New file.
+* trans/Makefile: Add `startup-standalone'.
+---
+ trans/Makefile             |   9 +-
+ trans/startup-standalone.c | 435 +++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 440 insertions(+), 4 deletions(-)
+ create mode 100644 trans/startup-standalone.c
+
+diff --git a/trans/Makefile b/trans/Makefile
+index ce1eae7..5153361 100644
+--- a/trans/Makefile
++++ b/trans/Makefile
+@@ -21,14 +21,14 @@ makemode := servers
+ 
+ targets = symlink firmlink ifsock magic null fifo new-fifo fwd crash \
+ 	  password hello hello-mt streamio fakeroot proxy-defpager remap \
+-	  mtab
++	  mtab startup-standalone
+ SRCS = ifsock.c symlink.c magic.c null.c fifo.c new-fifo.c fwd.c \
+ 	crash.c firmlink.c password.c hello.c hello-mt.c streamio.c \
+-	fakeroot.c proxy-defpager.c remap.c mtab.c
++	fakeroot.c proxy-defpager.c remap.c mtab.c startup-standalone.c
+ OBJS = $(SRCS:.c=.o) fsysServer.o ifsockServer.o passwordServer.o \
+ 	crashServer.o crash_replyUser.o msgServer.o \
+ 	default_pagerServer.o default_pagerUser.o \
+-	device_replyServer.o elfcore.o
++	device_replyServer.o elfcore.o startupServer.o
+ HURDLIBS = ports netfs trivfs iohelp fshelp pipe ihash shouldbeinlibc
+ LDLIBS += -lpthread
+ password-LDLIBS = -lcrypt
+@@ -61,8 +61,9 @@ crash: crashServer.o crash_replyUser.o msgServer.o elfcore.o
+ password: passwordServer.o
+ streamio: device_replyServer.o
+ proxy-defpager: default_pagerServer.o default_pagerUser.o
++startup-standalone: startupServer.o startup_notifyUser.o
+ 
+-proxy-defpager crash password streamio: ../libports/libports.a ../libtrivfs/libtrivfs.a ../libfshelp/libfshelp.a
++proxy-defpager crash password streamio startup-standalone: ../libports/libports.a ../libtrivfs/libtrivfs.a ../libfshelp/libfshelp.a
+ fifo new-fifo: ../libpipe/libpipe.a
+ fwd: ../libfshelp/libfshelp.a ../libports/libports.a
+ hello-mt magic null ifsock fifo new-fifo firmlink: ../libtrivfs/libtrivfs.a ../libfshelp/libfshelp.a ../libports/libports.a ../libihash/libihash.a
+diff --git a/trans/startup-standalone.c b/trans/startup-standalone.c
+new file mode 100644
+index 0000000..87acd0e
+--- /dev/null
++++ b/trans/startup-standalone.c
+@@ -0,0 +1,435 @@
++/* Start and maintain hurd core servers and system run state
++
++   Copyright (C) 1993-2015 Free Software Foundation, Inc.
++   This file is part of the GNU Hurd.
++
++   The GNU Hurd is free software; you can redistribute it and/or modify
++   it under the terms of the GNU General Public License as published by
++   the Free Software Foundation; either version 2, or (at your option)
++   any later version.
++
++   The GNU Hurd is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
++   GNU General Public License for more details.
++
++   You should have received a copy of the GNU General Public License
++   along with the GNU Hurd; see the file COPYING.  If not, write to
++   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
++
++/* Written by Michael I. Bushnell and Roland McGrath.  */
++
++/* This is probably more include files than I've ever seen before for
++   one file. */
++
++#include <argp.h>
++#include <argz.h>
++#include <error.h>
++#include <fcntl.h>
++#include <hurd/ports.h>
++#include <hurd/trivfs.h>
++#include <stdlib.h>
++#include <stdio.h>
++#include <string.h>
++#include <sys/mman.h>
++#include <sys/reboot.h>
++#include <unistd.h>
++#include <version.h>
++
++#include "startup_notify_U.h"
++#include "startup_reply_U.h"
++#include "startup_S.h"
++#include "notify_S.h"
++
++/* The privileged host control port.  Used for authentication.	*/
++mach_port_t host_priv;
++
++/* We receive dead-name notifications here.  */
++struct port_info *notification;
++
++/* host_reboot flags for when we crash.	 */
++static int crash_flags = RB_AUTOBOOT;
++
++#define BOOT(flags)	((flags & RB_HALT) ? "halt" : "reboot")
++
++const char *argp_program_version = STANDARD_HURD_VERSION (startup-standalone);
++
++/* Trivfs hooks. */
++int trivfs_fstype = FSTYPE_MISC;
++int trivfs_fsid = 0;
++
++int trivfs_allow_open = 0;
++int trivfs_support_read = 0;
++int trivfs_support_write = 0;
++int trivfs_support_exec = 0;
++
++void
++trivfs_modify_stat (struct trivfs_protid *cred, struct stat *st)
++{
++  /* Mark the node as a read-only plain file. */
++  st->st_mode &= ~(S_IFMT | ALLPERMS);
++  st->st_mode |= (S_IFREG | S_IRUSR | S_IRGRP | S_IROTH);
++  st->st_size = 0;
++}
++
++error_t
++trivfs_goaway (struct trivfs_control *cntl, int flags)
++{
++  exit (0);
++}
++
++/* Options processing.	We accept the same options on the command line
++   and from fsys_set_options.  */
++
++static const struct argp_option options[] =
++{
++  {"crash-debug",  'H', 0, 0, "On system crash, go to kernel debugger"},
++  {0}
++};
++
++static error_t
++parse_opt (int opt, char *arg, struct argp_state *state)
++{
++  switch (opt)
++    {
++    case 'H': crash_flags = RB_DEBUGGER; break;
++    default:
++      return ARGP_ERR_UNKNOWN;
++    case ARGP_KEY_INIT:
++    case ARGP_KEY_SUCCESS:
++    case ARGP_KEY_ERROR:
++      break;
++    }
++  return 0;
++}
++
++/* This will be called from libtrivfs to help construct the answer
++   to an fsys_get_options RPC.	*/
++error_t
++trivfs_append_args (struct trivfs_control *fsys,
++		    char **argz, size_t *argz_len)
++{
++  error_t err = 0;
++
++  if (crash_flags == RB_DEBUGGER)
++    err = argz_add (argz, argz_len, "--crash-debug");
++
++  return err;
++}
++
++static const char doc[] =
++  "Supervise Hurd core servers and manage system shutdown";
++
++static struct argp hello_argp =
++{ options, parse_opt, 0, doc };
++
++/* Setting this variable makes libtrivfs use our argp to
++   parse options passed in an fsys_set_options RPC.  */
++struct argp *trivfs_runtime_argp = &hello_argp;
++
++static int
++demuxer (mach_msg_header_t *inp,
++	 mach_msg_header_t *outp)
++{
++  // XXX nicer demuxer
++  extern int startup_server (mach_msg_header_t *, mach_msg_header_t *);
++
++  return startup_server (inp, outp) || trivfs_demuxer (inp, outp);
++}
++
++int
++main (int argc, char **argv)
++{
++  error_t err;
++  mach_port_t bootstrap;
++  struct trivfs_control *fsys;
++  struct port_class *notification_class;
++
++  /* We use the same argp for options available at startup
++     as for options we'll accept in an fsys_set_options RPC.  */
++  argp_parse (&hello_argp, argc, argv, 0, 0, 0);
++
++  err = get_privileged_ports (&host_priv, NULL);
++  if (err)
++    error (1, err, "Must be started as root");
++
++  task_get_bootstrap_port (mach_task_self (), &bootstrap);
++  if (bootstrap == MACH_PORT_NULL)
++    error (1, 0, "Must be started as a translator");
++
++  /* Reply to our parent */
++  err = trivfs_startup (bootstrap, 0, 0, 0, 0, 0, &fsys);
++  if (err)
++    error (3, err, "trivfs_startup");
++
++  err = mach_port_deallocate (mach_task_self (), bootstrap);
++  assert_perror (err);
++
++  notification_class = ports_create_class (NULL, NULL);
++  if (! notification_class)
++    error (1, errno, "ports_create_class");
++
++  err = ports_create_port (notification_class, fsys->pi.bucket, 0,
++			   &notification);
++  if (err)
++    error (1, err, "ports_create_port");
++
++  /* Launch. */
++  ports_manage_port_operations_one_thread (fsys->pi.bucket, demuxer, 0);
++
++  return 0;
++}
++
++/* This structure keeps track of each notified task.  */
++struct ntfy_task
++  {
++    mach_port_t notify_port;
++    struct ntfy_task *next;
++    char *name;
++  };
++
++/* This structure keeps track of each registered essential task.  */
++struct ess_task
++  {
++    struct ess_task *next;
++    task_t task_port;
++    char *name;
++  };
++
++/* These are linked lists of all of the registered items.  */
++static struct ess_task *ess_tasks;
++static struct ntfy_task *ntfy_tasks;
++
++/** System shutdown **/
++
++/* Reboot the microkernel.  */
++void
++reboot_mach (int flags)
++{
++  error_t err;
++  printf ("%s: %sing Mach (flags %#x)...\n",
++	  program_invocation_short_name, BOOT (flags), flags);
++  fflush (stdout);
++  sleep (5);
++  while ((err = host_reboot (host_priv, flags)))
++    error (0, err, "reboot");
++  for (;;);
++}
++
++/* Reboot the microkernel, specifying that this is a crash. */
++void
++crash_mach (void)
++{
++  reboot_mach (crash_flags);
++}
++
++/* Notify all tasks that have requested shutdown notifications */
++void
++notify_shutdown (const char *msg)
++{
++  struct ntfy_task *n;
++
++  for (n = ntfy_tasks; n != NULL; n = n->next)
++    {
++      error_t err;
++      printf ("%s: notifying %s of %s...",
++	      program_invocation_short_name, n->name, msg);
++      fflush (stdout);
++      err = startup_dosync (n->notify_port, 60000); /* 1 minute to reply */
++      if (err == MACH_SEND_INVALID_DEST)
++	puts ("(no longer present)");
++      else if (err)
++	puts (strerror (err));
++      else
++	puts ("done");
++      fflush (stdout);
++    }
++}
++
++/* Reboot the Hurd. */
++void
++reboot_system (int flags)
++{
++  notify_shutdown (BOOT (flags));
++  reboot_mach (flags);
++}
++
++/* Reboot the Hurd, specifying that this is a crash. */
++void
++crash_system (void)
++{
++  reboot_system (crash_flags);
++}
++
++/* Request a dead-name notification sent to our port.  */
++static error_t
++request_dead_name (mach_port_t name)
++{
++  error_t err;
++  mach_port_t prev;
++  err = mach_port_request_notification (mach_task_self (), name,
++					MACH_NOTIFY_DEAD_NAME, 1,
++					notification->port_right,
++					MACH_MSG_TYPE_MAKE_SEND_ONCE, &prev);
++  if (prev != MACH_PORT_NULL)
++    mach_port_deallocate (mach_task_self (), prev);
++  return err;
++}
++
++/* Record an essential task in the list.  */
++static error_t
++record_essential_task (const char *name, task_t task)
++{
++  error_t err;
++  struct ess_task *et;
++  /* Record this task as essential.  */
++  et = malloc (sizeof (struct ess_task));
++  if (et == NULL)
++    return ENOMEM;
++  et->task_port = task;
++  et->name = strdup (name);
++  if (et->name == NULL)
++    {
++      free (et);
++      return ENOMEM;
++    }
++  et->next = ess_tasks;
++  ess_tasks = et;
++
++  /* Dead-name notification on the task port will tell us when it dies.	 */
++  err = request_dead_name (task);
++  if (err)
++    return err;
++
++  return 0;
++}
++
++kern_return_t
++S_startup_essential_task (mach_port_t server,
++			  mach_port_t reply,
++			  mach_msg_type_name_t replytype,
++			  task_t task,
++			  mach_port_t excpt,
++			  char *name,
++			  mach_port_t credential)
++{
++  error_t err;
++  if (credential != host_priv)
++    return EPERM;
++
++  err = mach_port_deallocate (mach_task_self (), credential);
++  assert_perror (err);
++
++  err = record_essential_task (name, task);
++  if (err)
++    return err;
++
++  return 0;
++}
++
++kern_return_t
++S_startup_request_notification (mach_port_t server,
++				mach_port_t notify,
++				char *name)
++{
++  error_t err;
++  struct ntfy_task *nt;
++
++  err = request_dead_name (notify);
++  if (err)
++    return err;
++
++  /* Note that the ntfy_tasks list is kept in inverse order of the
++     calls; this is important.	We need later notification requests
++     to get executed first.  */
++  nt = malloc (sizeof (struct ntfy_task));
++  nt->notify_port = notify;
++  nt->next = ntfy_tasks;
++  nt->name = strdup (name);
++  ntfy_tasks = nt;
++  return 0;
++}
++
++kern_return_t
++S_startup_procinit (startup_t bootstrap,
++		    mach_port_t reply,
++		    mach_msg_type_name_t replyPoly,
++		    process_t procserver,
++		    mach_port_t *startuptask,
++		    auth_t *auth,
++		    mach_port_t *hostpriv,
++		    mach_msg_type_name_t *hostprivPoly,
++		    mach_port_t *devmaster,
++		    mach_msg_type_name_t *devmasterPoly)
++{
++  return EOPNOTSUPP;
++}
++
++kern_return_t
++S_startup_authinit (startup_t bootstrap,
++		    mach_port_t reply,
++		    mach_msg_type_name_t replyPoly,
++		    mach_port_t auth,
++		    mach_port_t *proc,
++		    mach_msg_type_name_t *procPoly)
++{
++  return EOPNOTSUPP;
++}
++
++error_t
++ports_do_mach_notify_dead_name (struct port_info *pi,
++				mach_port_t dead_name)
++{
++  error_t err;
++  struct ntfy_task *nt, *pnt;
++  struct ess_task *et;
++
++  if (!pi)
++    return EOPNOTSUPP;
++
++  ports_dead_name (pi, dead_name);
++
++  /* Drop gratuitous extra reference that the notification creates. */
++  err = mach_port_deallocate (mach_task_self (), dead_name);
++  assert_perror (err);
++
++  if (pi != notification)
++    return 0;
++
++  for (et = ess_tasks; et != NULL; et = et->next)
++    if (et->task_port == dead_name)
++      /* An essential task has died.  */
++      {
++	error (0, 0, "Crashing system; essential task %s died", et->name);
++	crash_system ();
++      }
++
++  for (nt = ntfy_tasks, pnt = NULL; nt != NULL; pnt = nt, nt = nt->next)
++    if (nt->notify_port == dead_name)
++      {
++	/* Someone who wanted to be notified is gone.  */
++	err = mach_port_deallocate (mach_task_self (), dead_name);
++	assert_perror (err);
++	if (pnt != NULL)
++	  pnt->next = nt->next;
++	else
++	  ntfy_tasks = nt->next;
++	free (nt);
++
++	return 0;
++      }
++
++  return 0;
++}
++
++kern_return_t
++S_startup_reboot (mach_port_t server,
++		  mach_port_t refpt,
++		  int code)
++{
++  if (refpt != host_priv)
++    return EPERM;
++
++  reboot_system (code);
++  for (;;);
++}
+-- 
+2.1.4
+