init.c

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/*
 * Copyright (c) 2005 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <unistd.h>
#include <vfs/vfs.h>
#include <bool.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <task.h>
#include <malloc.h>
#include <macros.h>
#include <str.h>
#include <devmap.h>
#include <str_error.h>
#include "init.h"

#define ROOT_DEVICE       "bd/initrd"
#define ROOT_MOUNT_POINT  "/"

#define DEVFS_FS_TYPE      "devfs"
#define DEVFS_MOUNT_POINT  "/dev"

#define TMPFS_FS_TYPE      "tmpfs"
#define TMPFS_MOUNT_POINT  "/tmp"

#define DATA_FS_TYPE      "fat"
#define DATA_DEVICE       "bd/ata1disk0"
#define DATA_MOUNT_POINT  "/data"

#define SRV_CONSOLE  "/srv/console"
#define APP_GETTERM  "/app/getterm"

static void info_print(void)
{
        printf("%s: HelenOS init\n", NAME);
}

static bool mount_report(const char *desc, const char *mntpt,
    const char *fstype, const char *dev, int rc)
{
        switch (rc) {
        case EOK:
                if (dev != NULL)
                        printf("%s: %s mounted on %s (%s at %s)\n", NAME, desc, mntpt,
                            fstype, dev);
                else
                        printf("%s: %s mounted on %s (%s)\n", NAME, desc, mntpt, fstype);
                break;
        case EBUSY:
                printf("%s: %s already mounted on %s\n", NAME, desc, mntpt);
                return false;
        case ELIMIT:
                printf("%s: %s limit exceeded\n", NAME, desc);
                return false;
        case ENOENT:
                printf("%s: %s unknown type (%s)\n", NAME, desc, fstype);
                return false;
        default:
                printf("%s: %s not mounted on %s (%s)\n", NAME, desc, mntpt,
                    str_error(rc));
                return false;
        }
        
        return true;
}

static bool mount_root(const char *fstype)
{
        const char *opts = "";
        
        if (str_cmp(fstype, "tmpfs") == 0)
                opts = "restore";
        
        int rc = mount(fstype, ROOT_MOUNT_POINT, ROOT_DEVICE, opts,
            IPC_FLAG_BLOCKING);
        return mount_report("Root filesystem", ROOT_MOUNT_POINT, fstype,
            ROOT_DEVICE, rc);
}

static bool mount_devfs(void)
{
        int rc = mount(DEVFS_FS_TYPE, DEVFS_MOUNT_POINT, "", "",
            IPC_FLAG_BLOCKING);
        return mount_report("Device filesystem", DEVFS_MOUNT_POINT, DEVFS_FS_TYPE,
            NULL, rc);
}

static void spawn(const char *fname)
{
        int rc;
        struct stat s;
        
        if (stat(fname, &s) == ENOENT)
                return;
        
        printf("%s: Spawning %s\n", NAME, fname);
        rc = task_spawnl(NULL, fname, fname, NULL);
        if (rc != EOK) {
                printf("%s: Error spawning %s (%s)\n", NAME, fname,
                    str_error(rc));
        }
}

static void srv_start(const char *fname)
{
        task_id_t id;
        task_exit_t texit;
        int rc, retval;
        struct stat s;
        
        if (stat(fname, &s) == ENOENT)
                return;
        
        printf("%s: Starting %s\n", NAME, fname);
        rc = task_spawnl(&id, fname, fname, NULL);
        if (!id) {
                printf("%s: Error spawning %s (%s)\n", NAME, fname,
                    str_error(rc));
                return;
        }
        
        rc = task_wait(id, &texit, &retval);
        if (rc != EOK) {
                printf("%s: Error waiting for %s (%s(\n", NAME, fname,
                    str_error(rc));
                return;
        }
        
        if (texit != TASK_EXIT_NORMAL) {
                printf("%s: Server %s failed to start (unexpectedly "
                    "terminated)\n", NAME, fname);
                return;
        }

        if (retval != 0) {
                printf("%s: Server %s failed to start (exit code %d)\n", NAME,
                        fname, retval);
        }
}

static void console(const char *dev)
{
        char hid_in[DEVMAP_NAME_MAXLEN];
        int rc;
        
        snprintf(hid_in, DEVMAP_NAME_MAXLEN, "%s/%s", DEVFS_MOUNT_POINT, dev);
        
        printf("%s: Spawning %s %s\n", NAME, SRV_CONSOLE, hid_in);
        
        /* Wait for the input device to be ready */
        devmap_handle_t handle;
        rc = devmap_device_get_handle(dev, &handle, IPC_FLAG_BLOCKING);
        if (rc != EOK) {
                printf("%s: Error waiting on %s (%s)\n", NAME, hid_in,
                    str_error(rc));
                return;
        }
        
        rc = task_spawnl(NULL, SRV_CONSOLE, SRV_CONSOLE, hid_in, NULL);
        if (rc != EOK) {
                printf("%s: Error spawning %s %s (%s)\n", NAME, SRV_CONSOLE,
                    hid_in, str_error(rc));
        }
}

static void getterm(const char *dev, const char *app, bool wmsg)
{
        char term[DEVMAP_NAME_MAXLEN];
        int rc;
        
        snprintf(term, DEVMAP_NAME_MAXLEN, "%s/%s", DEVFS_MOUNT_POINT, dev);
        
        printf("%s: Spawning %s %s %s\n", NAME, APP_GETTERM, term, app);
        
        /* Wait for the terminal device to be ready */
        devmap_handle_t handle;
        rc = devmap_device_get_handle(dev, &handle, IPC_FLAG_BLOCKING);
        if (rc != EOK) {
                printf("%s: Error waiting on %s (%s)\n", NAME, term,
                    str_error(rc));
                return;
        }
        
        if (wmsg) {
                rc = task_spawnl(NULL, APP_GETTERM, APP_GETTERM, "-w", term,
                    app, NULL);
                if (rc != EOK) {
                        printf("%s: Error spawning %s -w %s %s (%s)\n", NAME,
                            APP_GETTERM, term, app, str_error(rc));
                }
        } else {
                rc = task_spawnl(NULL, APP_GETTERM, APP_GETTERM, term, app,
                    NULL);
                if (rc != EOK) {
                        printf("%s: Error spawning %s %s %s (%s)\n", NAME,
                            APP_GETTERM, term, app, str_error(rc));
                }
        }
}

static bool mount_tmpfs(void)
{
        int rc = mount(TMPFS_FS_TYPE, TMPFS_MOUNT_POINT, "", "", 0);
        return mount_report("Temporary filesystem", TMPFS_MOUNT_POINT,
            TMPFS_FS_TYPE, NULL, rc);
}

static bool mount_data(void)
{
        int rc = mount(DATA_FS_TYPE, DATA_MOUNT_POINT, DATA_DEVICE, "wtcache", 0);
        return mount_report("Data filesystem", DATA_MOUNT_POINT, DATA_FS_TYPE,
            DATA_DEVICE, rc);
}

int main(int argc, char *argv[])
{
        info_print();
        
        if (!mount_root(STRING(RDFMT))) {
                printf("%s: Exiting\n", NAME);
                return -1;
        }
        
        /* Make sure tmpfs is running. */
        if (str_cmp(STRING(RDFMT), "tmpfs") != 0) {
                spawn("/srv/tmpfs");
        }
        
        spawn("/srv/devfs");
        spawn("/srv/taskmon");
        
        if (!mount_devfs()) {
                printf("%s: Exiting\n", NAME);
                return -2;
        }
        
        mount_tmpfs();
        
        spawn("/srv/apic");
        spawn("/srv/i8259");
        spawn("/srv/fhc");
        spawn("/srv/obio");
        srv_start("/srv/cuda_adb");
        srv_start("/srv/i8042");
        srv_start("/srv/s3c24ser");
        srv_start("/srv/adb_ms");
        srv_start("/srv/char_ms");
        srv_start("/srv/s3c24ts");
        
        spawn("/srv/fb");
        spawn("/srv/kbd");
        console("hid_in/kbd");
        
        spawn("/srv/clip");
        
        /*
         * Start these synchronously so that mount_data() can be
         * non-blocking.
         */
#ifdef CONFIG_START_BD
        srv_start("/srv/ata_bd");
        srv_start("/srv/gxe_bd");
#else
        (void) srv_start;
#endif
        
#ifdef CONFIG_MOUNT_DATA
        mount_data();
#else
        (void) mount_data;
#endif
        
        getterm("term/vc0", "/app/bdsh", true);
        getterm("term/vc1", "/app/bdsh", false);
        getterm("term/vc2", "/app/bdsh", false);
        getterm("term/vc3", "/app/bdsh", false);
        getterm("term/vc4", "/app/bdsh", false);
        getterm("term/vc5", "/app/bdsh", false);
        getterm("term/vc6", "/app/klog", false);

#ifdef CONFIG_START_DEVMAN

#ifdef CONFIG_DEVMAN_EARLY_LAUNCH
        spawn("/srv/devman");
#else
        getterm("term/vc7", "/srv/devman", false);
#endif

#endif

        return 0;
}

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