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/* main.c - boot messages monitor
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*
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* Copyright (C) 2007 Red Hat, Inc
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by: Ray Strode <rstrode@redhat.com>
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*/
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#include "config.h"
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <sys/types.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "ply-boot-server.h"
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#include "ply-boot-splash.h"
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#include "ply-event-loop.h"
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#include "ply-logger.h"
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#include "ply-terminal-session.h"
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#include "ply-utils.h"
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#ifndef PLY_WORKING_DIRECTORY
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#define PLY_WORKING_DIRECTORY "/var/run/plymouth"
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#endif
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typedef struct
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{
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ply_event_loop_t *loop;
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ply_boot_server_t *boot_server;
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ply_window_t *window;
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ply_boot_splash_t *boot_splash;
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ply_terminal_session_t *session;
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ply_buffer_t *boot_buffer;
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int original_root_dir_fd;
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} state_t;
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static ply_boot_splash_t *start_boot_splash (state_t *state,
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const char *module_path);
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static void
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on_session_start (state_t *state)
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{
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ply_trace ("changing to original root fs");
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if (fchdir (state->original_root_dir_fd) < 0)
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{
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ply_trace ("Could not change to original root directory "
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"to start session: %m");
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return;
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}
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}
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static void
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on_session_finished (state_t *state)
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{
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ply_log ("\nSession finished...exiting logger\n");
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ply_flush_log ();
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ply_event_loop_exit (state->loop, 1);
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}
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static void
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on_update (state_t *state,
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const char *status)
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{
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ply_trace ("updating status to '%s'", status);
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ply_boot_splash_update_status (state->boot_splash,
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status);
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}
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static char *
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on_ask_for_password (state_t *state)
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{
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return ply_boot_splash_ask_for_password (state->boot_splash);
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}
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static void
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on_system_initialized (state_t *state)
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{
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ply_trace ("system now initialized, ready to mount root filesystem");
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mknod ("/dev/root", 0600 | S_IFBLK, makedev (253, 0));
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mount("/dev/root", "/sysroot", "ext3", 0, NULL);
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ply_terminal_session_open_log (state->session,
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"/sysroot/var/log/bootmessages.log");
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}
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static void
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on_quit (state_t *state)
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{
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ply_trace ("time to quit, closing log");
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ply_terminal_session_close_log (state->session);
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ply_trace ("hiding splash");
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ply_boot_splash_hide (state->boot_splash);
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ply_trace ("exiting event loop");
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ply_event_loop_exit (state->loop, 0);
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ply_trace ("switching root dir");
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fchdir (state->original_root_dir_fd);
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chroot (".");
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ply_trace ("unmounting temporary filesystem mounts");
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ply_unmount_filesystem (PLY_WORKING_DIRECTORY "/sysroot");
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ply_unmount_filesystem (PLY_WORKING_DIRECTORY "/proc");
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ply_unmount_filesystem (PLY_WORKING_DIRECTORY "/dev/pts");
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ply_unmount_filesystem (PLY_WORKING_DIRECTORY);
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}
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static ply_boot_server_t *
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start_boot_server (state_t *state)
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{
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ply_boot_server_t *server;
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server = ply_boot_server_new ((ply_boot_server_update_handler_t) on_update,
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(ply_boot_server_ask_for_password_handler_t) on_ask_for_password,
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(ply_boot_server_system_initialized_handler_t) on_system_initialized,
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(ply_boot_server_quit_handler_t) on_quit,
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state);
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if (!ply_boot_server_listen (server))
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{
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ply_save_errno ();
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ply_boot_server_free (server);
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ply_restore_errno ();
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return NULL;
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}
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ply_boot_server_attach_to_event_loop (server, state->loop);
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return server;
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}
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static void
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on_escape_pressed (state_t *state)
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{
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ply_boot_splash_hide (state->boot_splash);
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ply_boot_splash_free (state->boot_splash);
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state->boot_splash = start_boot_splash (state, PLYMOUTH_PLUGIN_PATH "details.so");
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}
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static ply_window_t *
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create_window (state_t *state,
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const char *tty)
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{
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ply_window_t *window;
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ply_trace ("creating window for %s", tty);
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window = ply_window_new (tty);
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ply_trace ("attaching window to event loop");
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ply_window_attach_to_event_loop (window, state->loop);
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ply_trace ("opening window");
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if (!ply_window_open (window))
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{
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ply_save_errno ();
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ply_trace ("could not open window: %m");
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ply_window_free (window);
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ply_restore_errno ();
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return NULL;
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}
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ply_trace ("listening for escape key");
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ply_window_set_escape_handler (window, (ply_window_escape_handler_t)
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on_escape_pressed, state);
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return window;
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}
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static ply_boot_splash_t *
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start_boot_splash (state_t *state,
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const char *module_path)
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{
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ply_boot_splash_t *splash;
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ply_trace ("Loading boot splash plugin '%s'",
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module_path);
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splash = ply_boot_splash_new (module_path, state->window, state->boot_buffer);
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ply_trace ("attaching plugin to event loop");
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ply_boot_splash_attach_to_event_loop (splash, state->loop);
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ply_trace ("showing plugin");
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if (!ply_boot_splash_show (splash))
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{
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ply_save_errno ();
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ply_boot_splash_free (splash);
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ply_restore_errno ();
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return NULL;
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}
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return splash;
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}
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static ply_terminal_session_t *
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spawn_session (state_t *state,
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char **argv)
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{
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ply_terminal_session_t *session;
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ply_terminal_session_flags_t flags;
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flags = 0;
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flags |= PLY_TERMINAL_SESSION_FLAGS_RUN_IN_PARENT;
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flags |= PLY_TERMINAL_SESSION_FLAGS_LOOK_IN_PATH;
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flags |= PLY_TERMINAL_SESSION_FLAGS_REDIRECT_CONSOLE;
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flags |= PLY_TERMINAL_SESSION_FLAGS_CHANGE_ROOT_TO_CURRENT_DIRECTORY;
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ply_trace ("opening terminal session for '%s'", argv[0]);
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session = ply_terminal_session_new ((const char * const *) argv);
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ply_trace ("attaching terminal session to event loop");
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ply_terminal_session_attach_to_event_loop (session, state->loop);
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ply_trace ("buffering terminal session for replay if user presses escape");
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ply_terminal_session_set_output_buffer (session, state->boot_buffer);
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ply_trace ("running '%s'", argv[0]);
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if (!ply_terminal_session_run (session, flags,
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(ply_terminal_session_begin_handler_t)
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on_session_start,
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(ply_terminal_session_done_handler_t)
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on_session_finished, state))
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{
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ply_save_errno ();
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ply_terminal_session_free (session);
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ply_buffer_free (state->boot_buffer);
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state->boot_buffer = NULL;
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ply_restore_errno ();
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return NULL;
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}
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return session;
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}
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static bool
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create_working_directory (state_t *state)
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{
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ply_trace ("creating working directory '%s'",
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PLY_WORKING_DIRECTORY);
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if (!ply_create_detachable_directory (PLY_WORKING_DIRECTORY))
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return false;
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ply_trace ("changing to working directory");
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if (chdir (PLY_WORKING_DIRECTORY) < 0)
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return false;
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ply_trace ("creating proc subdirectory");
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if (!ply_create_directory ("proc"))
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return false;
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ply_trace ("creating dev subdirectory");
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if (!ply_create_directory ("dev"))
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return false;
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ply_trace ("creating dev/pts subdirectory");
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if (!ply_create_directory ("dev/pts"))
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return false;
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ply_trace ("creating usr/share/plymouth subdirectory");
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if (!ply_create_directory ("usr/share/plymouth"))
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return false;
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ply_trace ("creating " PLYMOUTH_PLUGIN_PATH " subdirectory");
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if (!ply_create_directory (PLYMOUTH_PLUGIN_PATH + 1))
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return false;
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ply_trace ("creating sysroot subdirectory");
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if (!ply_create_directory ("sysroot"))
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return false;
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return true;
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}
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static bool
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change_to_working_directory (state_t *state)
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{
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ply_trace ("changing to working directory");
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state->original_root_dir_fd = open ("/", O_RDONLY);
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if (state->original_root_dir_fd < 0)
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return false;
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if (chdir (PLY_WORKING_DIRECTORY) < 0)
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return false;
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if (chroot (".") < 0)
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return false;
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ply_trace ("now successfully in working directory");
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return true;
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}
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static bool
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mount_proc_filesystem (state_t *state)
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{
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ply_trace ("mounting proc filesystem");
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if (mount ("none", PLY_WORKING_DIRECTORY "/proc", "proc", 0, NULL) < 0)
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return false;
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open (PLY_WORKING_DIRECTORY "/proc/.", O_RDWR);
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ply_trace ("mounted proc filesystem");
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return true;
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}
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static bool
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create_device_nodes (state_t *state)
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{
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ply_trace ("creating device nodes");
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if (mknod ("./dev/root", 0600 | S_IFBLK, makedev (253, 0)) < 0)
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return false;
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if (mknod ("./dev/null", 0600 | S_IFCHR, makedev (1, 3)) < 0)
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return false;
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if (mknod ("./dev/console", 0600 | S_IFCHR, makedev (5, 1)) < 0)
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return false;
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if (mknod ("./dev/tty", 0600 | S_IFCHR, makedev (5, 0)) < 0)
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return false;
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if (mknod ("./dev/tty0", 0600 | S_IFCHR, makedev (4, 0)) < 0)
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return false;
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if (mknod ("./dev/tty1", 0600 | S_IFCHR, makedev (4, 1)) < 0)
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return false;
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if (mknod ("./dev/ptmx", 0600 | S_IFCHR, makedev (5, 2)) < 0)
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return false;
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if (mknod ("./dev/fb", 0600 | S_IFCHR, makedev (29, 0)) < 0)
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return false;
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ply_trace ("created device nodes");
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return true;
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}
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static bool
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mount_devpts_filesystem (state_t *state)
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{
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ply_trace ("mounting devpts filesystem");
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if (mount ("none", PLY_WORKING_DIRECTORY "/dev/pts", "devpts", 0,
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"gid=5,mode=620") < 0)
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return false;
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open (PLY_WORKING_DIRECTORY "/dev/pts/.", O_RDWR);
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ply_trace ("mounted devpts filesystem");
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return true;
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}
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static bool
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copy_data_files (state_t *state)
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|
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{
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ply_trace ("copying data files");
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|
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if (!ply_copy_directory ("/usr/share/plymouth",
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"usr/share/plymouth"))
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return false;
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ply_trace ("copied data files");
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ply_trace ("copying plugins");
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if (!ply_copy_directory (PLYMOUTH_PLUGIN_PATH,
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PLYMOUTH_PLUGIN_PATH + 1))
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return false;
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|
|
|
ply_trace ("copied plugins files");
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool
|
|
|
|
set_console_io_to_vt1 (state_t *state)
|
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
fd = open ("/dev/tty1", O_RDWR | O_APPEND);
|
|
|
|
|
|
|
|
if (fd < 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
dup2 (fd, STDIN_FILENO);
|
|
|
|
dup2 (fd, STDOUT_FILENO);
|
|
|
|
dup2 (fd, STDERR_FILENO);
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool
|
|
|
|
initialize_environment (state_t *state)
|
|
|
|
{
|
|
|
|
ply_trace ("initializing minimal work environment");
|
|
|
|
if (!create_working_directory (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!create_device_nodes (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!copy_data_files (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!mount_proc_filesystem (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!mount_devpts_filesystem (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!change_to_working_directory (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!set_console_io_to_vt1 (state))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
ply_trace ("initialized minimal work environment");
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
main (int argc,
|
|
|
|
char **argv)
|
|
|
|
{
|
|
|
|
state_t state;
|
|
|
|
int exit_code;
|
|
|
|
|
|
|
|
if (argc <= 1)
|
|
|
|
{
|
|
|
|
ply_error ("%s other-command [other-command-args]", argv[0]);
|
|
|
|
return EX_USAGE;
|
|
|
|
}
|
|
|
|
|
|
|
|
ply_toggle_tracing ();
|
|
|
|
|
|
|
|
state.loop = ply_event_loop_new ();
|
|
|
|
|
|
|
|
/* before do anything we need to make sure we have a working
|
|
|
|
* environment. /proc needs to be mounted and certain devices need
|
|
|
|
* to be accessible (like the framebuffer device, pseudoterminal
|
|
|
|
* devices, etc)
|
|
|
|
*/
|
|
|
|
if (!initialize_environment (&state))
|
|
|
|
{
|
|
|
|
ply_error ("could not setup basic operating environment: %m");
|
|
|
|
ply_list_directory (PLY_WORKING_DIRECTORY);
|
|
|
|
return EX_OSERR;
|
|
|
|
}
|
|
|
|
|
|
|
|
state.boot_buffer = ply_buffer_new ();
|
|
|
|
|
|
|
|
state.session = spawn_session (&state, argv + 1);
|
|
|
|
|
|
|
|
if (state.session == NULL)
|
|
|
|
{
|
|
|
|
ply_error ("could not run '%s': %m", argv[1]);
|
|
|
|
return EX_UNAVAILABLE;
|
|
|
|
}
|
|
|
|
|
|
|
|
state.boot_server = start_boot_server (&state);
|
|
|
|
|
|
|
|
if (state.boot_server == NULL)
|
|
|
|
{
|
|
|
|
ply_error ("could not log bootup: %m");
|
|
|
|
return EX_UNAVAILABLE;
|
|
|
|
}
|
|
|
|
|
|
|
|
state.window = create_window (&state, "/dev/tty1");
|
|
|
|
|
|
|
|
state.boot_splash = start_boot_splash (&state,
|
|
|
|
PLYMOUTH_PLUGIN_PATH "fedora-fade-in.so");
|
|
|
|
|
|
|
|
if (state.boot_splash == NULL)
|
|
|
|
{
|
|
|
|
state.boot_splash = start_boot_splash (&state,
|
|
|
|
PLYMOUTH_PLUGIN_PATH "text.so");
|
|
|
|
}
|
|
|
|
|
|
|
|
if (state.boot_splash == NULL)
|
|
|
|
{
|
|
|
|
ply_error ("could not start boot splash: %m");
|
|
|
|
return EX_UNAVAILABLE;
|
|
|
|
}
|
|
|
|
|
|
|
|
ply_trace ("entering event loop");
|
|
|
|
exit_code = ply_event_loop_run (state.loop);
|
|
|
|
ply_trace ("exited event loop");
|
|
|
|
|
|
|
|
ply_boot_splash_free (state.boot_splash);
|
|
|
|
state.boot_splash = NULL;
|
|
|
|
|
|
|
|
ply_window_free (state.window);
|
|
|
|
state.window = NULL;
|
|
|
|
|
|
|
|
ply_boot_server_free (state.boot_server);
|
|
|
|
state.boot_server = NULL;
|
|
|
|
|
|
|
|
ply_trace ("freeing terminal session");
|
|
|
|
ply_terminal_session_free (state.session);
|
|
|
|
|
|
|
|
ply_buffer_free (state.boot_buffer);
|
|
|
|
|
|
|
|
ply_trace ("freeing event loop");
|
|
|
|
ply_event_loop_free (state.loop);
|
|
|
|
|
|
|
|
ply_trace ("exiting with code %d", exit_code);
|
|
|
|
|
|
|
|
return exit_code;
|
|
|
|
}
|
|
|
|
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
|