diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Makefile | 20 | ||||
| -rw-r--r-- | init/init.c | 525 |
2 files changed, 22 insertions, 523 deletions
diff --git a/init/Makefile b/init/Makefile index 716aaa5a..ffb82ffd 100644 --- a/init/Makefile +++ b/init/Makefile @@ -1,5 +1,5 @@ # -# Copyright (C) 1994, 1995, 1996, 1999 Free Software Foundation +# Copyright (C) 1994,95,96,99,2001 Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License as @@ -18,29 +18,13 @@ dir := init makemode := server -# Set this to something other than `yes' to get the old Hurd init -# that has BSD-style rc and ttys functionality rolled in. -# The option for this old style may go away at some point in the future; -# if you want BSD style, best to use runttys (in daemons) instead. -split-init = yes - -SRCS = init.c +SRCS = init.c stubs.c OBJS = $(SRCS:.c=.o) \ startupServer.o notifyServer.o startup_replyUser.o msgServer.o \ startup_notifyUser.o -LCLHDRS = ttys.h target = init HURDLIBS = shouldbeinlibc -ifeq (yes,$(split-init)) -init-CPPFLAGS = -DSPLIT_INIT -SRCS += stubs.c -else -SRCS += ttys.c -LDLIBS = -lutil -HURDLIBS += ports fshelp -endif - include ../Makeconf mung_msg_S.h: msg_S.h diff --git a/init/init.c b/init/init.c index 4a6e0b90..bf6ef8b5 100644 --- a/init/init.c +++ b/init/init.c @@ -56,12 +56,10 @@ #include "mung_msg_S.h" /* host_reboot flags for when we crash. */ -int crash_flags = RB_AUTOBOOT; +static int crash_flags = RB_AUTOBOOT; #define BOOT(flags) ((flags & RB_HALT) ? "halt" : "reboot") -#define _PATH_RUNCOM "/libexec/rc" - const char *argp_program_version = STANDARD_HURD_VERSION (init); @@ -78,9 +76,9 @@ options[] = {0} }; -char doc[] = "Start and maintain hurd core servers and system run state"; +static char doc[] = "Start and maintain hurd core servers and system run state"; -int booted; /* Set when the core servers are up. */ +static int booted; /* Set when the core servers are up. */ /* This structure keeps track of each notified task. */ struct ntfy_task @@ -99,46 +97,39 @@ struct ess_task }; /* These are linked lists of all of the registered items. */ -struct ess_task *ess_tasks; -struct ntfy_task *ntfy_tasks; - -/* Mapped time */ -volatile struct mapped_time_value *mapped_time; +static struct ess_task *ess_tasks; +static struct ntfy_task *ntfy_tasks; /* Our receive right */ -mach_port_t startup; +static mach_port_t startup; /* Ports to the kernel */ -mach_port_t host_priv, device_master; +static mach_port_t host_priv, device_master; /* Args to bootstrap, expressed as flags */ -int bootstrap_args = 0; - -/* Set if something determines we should no longer pass the `autoboot' - flag to _PATH_RUNCOM. */ -int do_fastboot; +static int bootstrap_args = 0; /* Stored information for returning proc and auth startup messages. */ -mach_port_t procreply, authreply; -mach_msg_type_name_t procreplytype, authreplytype; +static mach_port_t procreply, authreply; +static mach_msg_type_name_t procreplytype, authreplytype; /* Our ports to auth and proc. */ -mach_port_t authserver; -mach_port_t procserver; +static mach_port_t authserver; +static mach_port_t procserver; /* Our bootstrap port, on which we call fsys_getpriv and fsys_init. */ -mach_port_t bootport; +static mach_port_t bootport; /* Set iff we are a `fake' bootstrap. */ -int fakeboot; +static int fakeboot; /* The tasks of auth and proc and the bootstrap filesystem. */ -task_t authtask, proctask, fstask; +static task_t authtask, proctask, fstask; -mach_port_t default_ports[INIT_PORT_MAX]; -mach_port_t default_dtable[3]; -int default_ints[INIT_INT_MAX]; +static mach_port_t default_ports[INIT_PORT_MAX]; +static mach_port_t default_dtable[3]; +static int default_ints[INIT_INT_MAX]; static char **global_argv; static char *startup_envz; @@ -745,168 +736,6 @@ init_stdarrays () mach_port_deallocate (mach_task_self (), std_port_array[i]); } -#ifndef SPLIT_INIT -/* Open /dev/console. If it isn't there, or it isn't a terminal, then - create /tmp/console and put the terminal on it. If we get EROFS, - in trying to create /tmp/console then as a last resort, put the - console on /tmp itself. - - In any case, after the console has been opened, set it appropriately - in default_dtable. Also return a port right for the terminal. */ -file_t -open_console () -{ -#define TERMINAL_FIRST_TRY "/hurd/term\0/tmp/console\0device\0console" -#define TERMINAL_SECOND_TRY "/hurd/term\0/tmp\0device\0console" - mach_port_t term; - static char *termname; - struct stat st; - error_t err = 0; - - if (booted) - { - term = file_name_lookup (termname, O_RDWR, 0); - return term; - } - - termname = _PATH_CONSOLE; - term = file_name_lookup (termname, O_RDWR, 0); - if (term != MACH_PORT_NULL) - err = io_stat (term, &st); - else - err = errno; - if (err) - error (0, err, "%s", termname); - else if (st.st_fstype != FSTYPE_TERM) - error (0, 0, "%s: Not a terminal", termname); - - if (term == MACH_PORT_NULL || err || st.st_fstype != FSTYPE_TERM) - /* Start the terminal server ourselves. */ - { - size_t argz_len; /* Length of args passed to translator. */ - char *terminal; /* Name of term translator. */ - mach_port_t control; /* Control port for term translator. */ - int try = 1; - - error_t open_node (int flags, - mach_port_t *underlying, - mach_msg_type_name_t *underlying_type, - task_t task, void *cookie) - { - term = file_name_lookup (termname, flags | O_CREAT|O_NOTRANS, 0666); - if (term == MACH_PORT_NULL) - { - error (0, errno, "%s", termname); - return errno; - } - - *underlying = term; - *underlying_type = MACH_MSG_TYPE_COPY_SEND; - - return 0; - } - - retry: - bootstrap_args |= RB_SINGLE; - - if (try == 1) - { - terminal = TERMINAL_FIRST_TRY; - argz_len = sizeof TERMINAL_FIRST_TRY; - try = 2; - } - else if (try == 2) - { - terminal = TERMINAL_SECOND_TRY; - argz_len = sizeof TERMINAL_SECOND_TRY; - try = 3; - } - else - goto fail; - - termname = terminal + strlen (terminal) + 1; /* first arg is name */ - - /* The callback to start_translator opens TERM as a side effect. */ - errno = - fshelp_start_translator (open_node, NULL, terminal, terminal, - argz_len, 3000, &control); - if (errno) - { - error (0, errno, "%s", terminal); - goto retry; - } - - errno = file_set_translator (term, 0, FS_TRANS_SET, 0, 0, 0, - control, MACH_MSG_TYPE_COPY_SEND); - mach_port_deallocate (mach_task_self (), control); - if (errno) - { - error (0, errno, "%s", termname); - goto retry; - } - mach_port_deallocate (mach_task_self (), term); - - /* Now repeat the open. */ - term = file_name_lookup (termname, O_RDWR, 0); - if (term == MACH_PORT_NULL) - { - error (0, errno, "%s", termname); - goto retry; - } - errno = io_stat (term, &st); - if (errno) - { - error (0, errno, "%s", termname); - term = MACH_PORT_NULL; - goto retry; - } - if (st.st_fstype != FSTYPE_TERM) - { - error (0, 0, "%s: Not a terminal", termname); - term = MACH_PORT_NULL; - goto retry; - } - - if (term) - error (0, 0, "Using temporary console %s", termname); - } - - fail: - - /* At this point either TERM is the console or it's null. If it's - null, then don't do anything, and our fd's will be copied. - Otherwise, open fd's 0, 1, and 2. */ - if (term != MACH_PORT_NULL) - { - int fd = openport (term, O_RDWR); - if (fd < 0) - assert_perror (errno); - - dup2 (fd, 0); - close (fd); - dup2 (0, 1); - dup2 (0, 2); - - fclose (stdin); - stdin = fdopen (0, "r"); - - /* Don't reopen our output channel for reliability's sake. */ - - /* Set ports in init_dtable for programs we start. */ - mach_port_deallocate (mach_task_self (), default_dtable[0]); - mach_port_deallocate (mach_task_self (), default_dtable[1]); - mach_port_deallocate (mach_task_self (), default_dtable[2]); - default_dtable[0] = getdport (0); - default_dtable[1] = getdport (1); - default_dtable[2] = getdport (2); - } - else - error (0, 0, "Cannot open console"); - - return term; -} -#endif - /* Frobnicate the kernel task and the proc server's idea of it (PID 2), so the kernel command line can be read as for a normal Hurd process. */ @@ -1037,8 +866,6 @@ frob_kernel_process (void) error (0, err, "proc_set_arg_locations for kernel task"); } -#ifdef SPLIT_INIT - /** Running userland. **/ /* In the "split-init" setup, we just run a single program (usually @@ -1047,8 +874,8 @@ frob_kernel_process (void) shell as a fallback. */ -pid_t child_pid; /* PID of the child we run */ -task_t child_task; /* and its (original) task port */ +static pid_t child_pid; /* PID of the child we run */ +static task_t child_task; /* and its (original) task port */ error_t send_signal (mach_port_t msgport, int signal, mach_port_t refport, mach_msg_timeout_t); @@ -1258,318 +1085,6 @@ launch_system (void) { launch_something (0); } - - -#else - -/** Single and multi user transitions **/ - -/* Current state of the system. */ -enum -{ - INITIAL, - SINGLE, - RUNCOM, - MULTI, -} system_state; - -pid_t shell_pid; /* PID of single-user shell. */ -pid_t rc_pid; /* PID of rc script */ - - -#include "ttys.h" - - -/* Start the single-user environment. This can only be done - when the core servers have fully started. We know that - startup_essential_task is the last thing they do before being - ready to handle requests, so we start this once all the necessary - servers have identified themselves that way. */ -void -launch_single_user () -{ - char shell[1024]; - mach_port_t term; - - printf ("Single-user environment:"); - fflush (stdout); - - term = open_console (); - - system_state = SINGLE; - -#if 0 - printf ("Shell program [%s]: ", _PATH_BSHELL); - if (! getstring (shell, sizeof shell)) -#endif - strcpy (shell, _PATH_BSHELL); - - /* The shell needs a real controlling terminal, so set that up here. */ - shell_pid = run_for_real (shell, shell, strlen (shell) + 1, term, 1); - mach_port_deallocate (mach_task_self (), term); - if (shell_pid == 0) - crash_system (); - printf (" shell.\n"); - fflush (stdout); -} - -/* Run /etc/rc as a shell script. Return non-zero if we fail. */ -int -process_rc_script () -{ - char *rcargs; - size_t rcargslen; - mach_port_t term; - - if (do_fastboot) - { - rcargs = malloc (rcargslen = sizeof _PATH_RUNCOM); - if (!rcargs) - return ENOMEM; - strcpy (rcargs, _PATH_RUNCOM); - } - else - { - rcargslen = asprintf (&rcargs, "%s%c%s", _PATH_RUNCOM, '\0', "autoboot"); - rcargslen++; /* final null */ - } - - term = open_console (); - - system_state = RUNCOM; - - rc_pid = run_for_real (rcargs, rcargs, rcargslen, term, 1); - free (rcargs); - mach_port_deallocate (mach_task_self (), term); - return ! rc_pid; -} - -/* Start up multi-user state. */ -void -launch_multi_user () -{ - int fail; - - if (!mapped_time) - maptime_map (1, 0, &mapped_time); - - fail = init_ttys (); - if (fail) - launch_single_user (); - else - { - system_state = MULTI; - fail = startup_ttys (); - if (fail) - launch_single_user (); - } -} - -void -launch_system () -{ - if (bootstrap_args & RB_SINGLE) - launch_single_user (); - else - { - if (process_rc_script ()) - launch_single_user (); - } -} - - -/* Kill all the outstanding processes with SIGNO. Return 1 if - there were no tasks left to kill. */ -int -kill_everyone (int signo) -{ - pid_t pidbuf[100], *pids = pidbuf; - mach_msg_type_number_t i, npids = 100; - task_t tk; - struct ess_task *es; - mach_port_t msg; - int didany; - int nloops; - error_t err; - - for (nloops = 10; nloops; nloops--) - { - if (nloops < 9) - /* Give it a rest for folks to have a chance to die */ - sleep (1); - - didany = 0; - err = proc_getallpids (procserver, &pids, &npids); - if (!err) - { - for (i = 0; i < npids; i++) - { - if (pids[i] == 1 /* us */ - || pids[i] == 3 /* default pager for now XXX */) - continue; - - /* See if the task is essential */ - err = proc_pid2task (procserver, pids[i], &tk); - if (err) - continue; - - for (es = ess_tasks; es; es = es->next) - if (tk == es->task_port) - { - /* Skip this one */ - mach_port_deallocate (mach_task_self (), tk); - break; - } - if (es) - continue; - - /* Kill it */ - if (signo == SIGKILL) - { - task_terminate (tk); - didany = 1; - } - else - { - err = proc_getmsgport (procserver, pids[i], &msg); - if (err) - { - mach_port_deallocate (mach_task_self (), tk); - continue; - } - - didany = 1; - msg_sig_post (msg, signo, 0, tk); - mach_port_deallocate (mach_task_self (), tk); - } - } - } - if (pids != pidbuf) - munmap (pids, npids * sizeof (pid_t)); - if (!didany) - return 1; - } - return 0; -} - -/* Kill outstanding multi-user sessions */ -void -kill_multi_user () -{ - int sigs[3] = {SIGHUP, SIGTERM, SIGKILL}; - int stage; - - free_ttys (); - - for (stage = 0; stage < 3; stage++) - if (kill_everyone (sigs[stage])) - break; - - /* Notify tasks that they are about to die. */ - notify_shutdown ("transition to single-user"); - - if (stage == 3) - error (0, 0, "warning: some processes wouldn't die; `ps -AlM' advised"); -} - -/* SIGNO has arrived and has been validated. Do whatever work it - implies. */ -void -process_signal (int signo) -{ - int fail; - - switch (signo) - { - case SIGTERM: - if (system_state == MULTI) - { - /* Drop back to single user. */ - kill_multi_user (); - launch_single_user (); - } - break; - - case SIGHUP: - if (system_state == MULTI) - reread_ttys (); - break; - - case SIGCHLD: - { - /* A child died. Find its status. */ - int status; - pid_t pid; - - for (;;) - { - pid = waitpid (WAIT_ANY, &status, WNOHANG | WUNTRACED); - if (pid <= 0) - return; - - if (pid == shell_pid && system_state == SINGLE) - { - if (WIFSIGNALED (status)) - { - error (0, 0, - "Single-user terminated abnormally (%s), restarting", - strsignal (WTERMSIG (status))); - launch_single_user (); - } - else if (WIFSTOPPED (status)) - { - error (0, 0, - "Single-user stopped (%s), killing and restarting", - strsignal (WSTOPSIG (status))); - kill (shell_pid, SIGKILL); - launch_single_user (); - } - else - { - do_fastboot = 1; - fail = process_rc_script (); - if (fail) - { - do_fastboot = 0; - launch_single_user (); - } - } - } - else if (pid == rc_pid && system_state == RUNCOM) - { - if (WIFSIGNALED (status)) - { - error (0, 0, - "%s terminated abnormally (%s), \ -going to single user mode", - _PATH_RUNCOM, strsignal (WTERMSIG (status))); - launch_single_user (); - } - else if (WIFSTOPPED (status)) - { - error (0, 0, - "%s stopped (%s), \ -killing it and going to single user mode", - _PATH_RUNCOM, strsignal (WSTOPSIG (status))); - kill (rc_pid, SIGKILL); - launch_single_user (); - } - else if (WEXITSTATUS (status)) - launch_single_user (); - else - launch_multi_user (); - } - else if (system_state == MULTI) - restart_terminal (pid); - } - break; - } - default: - break; - } -} - -#endif /* SPLIT_INIT */ /** RPC servers **/ |