source: mainline/uspace/app/init/init.c@ a05f2af

/*
 * 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.
 */

/** @addtogroup init Init
 * @brief Init process for user space environment configuration.
 * @{
 */
/**
 * @file
 */

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

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

#define LOCFS_FS_TYPE      "locfs"
#define LOCFS_MOUNT_POINT  "/loc"

#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"

#define SRV_COMPOSITOR  "/srv/compositor"

#define HID_INPUT              "hid/input"
#define HID_OUTPUT             "hid/output"
#define HID_COMPOSITOR_SERVER  ":0"

#define srv_start(path, ...) \
        srv_startl(path, path, ##__VA_ARGS__, NULL)

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

/** Report mount operation success */
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;
}

/** Mount root filesystem
 *
 * The operation blocks until the root filesystem
 * server is ready for mounting.
 *
 * @param[in] fstype Root filesystem type.
 *
 * @return True on success.
 * @return False on failure.
 *
 */
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, 0);
        return mount_report("Root filesystem", ROOT_MOUNT_POINT, fstype,
            ROOT_DEVICE, rc);
}

/** Mount locfs filesystem
 *
 * The operation blocks until the locfs filesystem
 * server is ready for mounting.
 *
 * @return True on success.
 * @return False on failure.
 *
 */
static bool mount_locfs(void)
{
        int rc = mount(LOCFS_FS_TYPE, LOCFS_MOUNT_POINT, "", "",
            IPC_FLAG_BLOCKING, 0);
        return mount_report("Location service filesystem", LOCFS_MOUNT_POINT,
            LOCFS_FS_TYPE, NULL, rc);
}

static int srv_startl(const char *path, ...)
{
        struct stat s;
        if (stat(path, &s) == ENOENT) {
                printf("%s: Unable to stat %s\n", NAME, path);
                return ENOENT;
        }
        
        printf("%s: Starting %s\n", NAME, path);
        
        va_list ap;
        const char *arg;
        int cnt = 0;
        
        va_start(ap, path);
        do {
                arg = va_arg(ap, const char *);
                cnt++;
        } while (arg != NULL);
        va_end(ap);
        
        va_start(ap, path);
        task_id_t id;
        int rc = task_spawn(&id, path, cnt, ap);
        va_end(ap);
        
        if (rc != EOK) {
                printf("%s: Error spawning %s (%s)\n", NAME, path,
                    str_error(rc));
                return rc;
        }
        
        if (!id) {
                printf("%s: Error spawning %s (invalid task id)\n", NAME,
                    path);
                return EINVAL;
        }
        
        task_exit_t texit;
        int retval;
        rc = task_wait(id, &texit, &retval);
        if (rc != EOK) {
                printf("%s: Error waiting for %s (%s)\n", NAME, path,
                    str_error(rc));
                return rc;
        }
        
        if (texit != TASK_EXIT_NORMAL) {
                printf("%s: Server %s failed to start (unexpectedly "
                    "terminated)\n", NAME, path);
                return EINVAL;
        }
        
        if (retval != 0)
                printf("%s: Server %s failed to start (exit code %d)\n", NAME,
                    path, retval);
        
        return retval;
}

static int console(const char *isvc, const char *osvc)
{
        /* Wait for the input service to be ready */
        service_id_t service_id;
        int rc = loc_service_get_id(isvc, &service_id, IPC_FLAG_BLOCKING);
        if (rc != EOK) {
                printf("%s: Error waiting on %s (%s)\n", NAME, isvc,
                    str_error(rc));
                return rc;
        }
        
        /* Wait for the output service to be ready */
        rc = loc_service_get_id(osvc, &service_id, IPC_FLAG_BLOCKING);
        if (rc != EOK) {
                printf("%s: Error waiting on %s (%s)\n", NAME, osvc,
                    str_error(rc));
                return rc;
        }
        
        return srv_start(SRV_CONSOLE, isvc, osvc);
}

static int compositor(const char *isvc, const char *name)
{
        /* Wait for the input service to be ready */
        service_id_t service_id;
        int rc = loc_service_get_id(isvc, &service_id, IPC_FLAG_BLOCKING);
        if (rc != EOK) {
                printf("%s: Error waiting on %s (%s)\n", NAME, isvc,
                    str_error(rc));
                return rc;
        }
        
        return srv_start(SRV_COMPOSITOR, isvc, name);
}

static int gui_start(const char *app, const char *srv_name)
{
        char winreg[50];
        snprintf(winreg, sizeof(winreg), "%s%s%s", "comp", srv_name, "/winreg");
        
        printf("%s: Spawning %s %s\n", NAME, app, winreg);
        
        task_id_t id;
        int rc = task_spawnl(&id, app, app, winreg, NULL);
        if (rc != EOK) {
                printf("%s: Error spawning %s %s (%s)\n", NAME, app,
                    winreg, str_error(rc));
                return -1;
        }
        
        task_exit_t texit;
        int retval;
        rc = task_wait(id, &texit, &retval);
        if ((rc != EOK) || (texit != TASK_EXIT_NORMAL)) {
                printf("%s: Error retrieving retval from %s (%s)\n", NAME,
                    app, str_error(rc));
                return -1;
        }
        
        return retval;
}

static void getterm(const char *svc, const char *app, bool wmsg)
{
        char term[LOC_NAME_MAXLEN];
        snprintf(term, LOC_NAME_MAXLEN, "%s/%s", LOCFS_MOUNT_POINT, svc);
        
        printf("%s: Spawning %s %s %s\n", NAME, APP_GETTERM, term, app);
        
        /* Wait for the terminal service to be ready */
        service_id_t service_id;
        int rc = loc_service_get_id(svc, &service_id, 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, 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, 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)
                srv_start("/srv/tmpfs");
        
        srv_start("/srv/locfs");
        srv_start("/srv/taskmon");
        
        if (!mount_locfs()) {
                printf("%s: Exiting\n", NAME);
                return 2;
        }
        
        mount_tmpfs();
        
        srv_start("/srv/devman");
        srv_start("/srv/apic");
        srv_start("/srv/i8259");
        srv_start("/srv/obio");
        srv_start("/srv/cuda_adb");
        srv_start("/srv/s3c24xx_uart");
        srv_start("/srv/s3c24xx_ts");
        
        srv_start("/srv/loopip");
        srv_start("/srv/ethip");
        srv_start("/srv/inetsrv");
        srv_start("/srv/tcp");
        srv_start("/srv/udp");
        
        srv_start("/srv/clipboard");
        srv_start("/srv/remcons");
        
        /*
         * 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");
#endif
        
#ifdef CONFIG_MOUNT_DATA
        /* Make sure fat is running. */
        if (str_cmp(STRING(RDFMT), "fat") != 0)
                srv_start("/srv/fat");
        
        mount_data();
#else
        (void) mount_data;
#endif
        
        srv_start("/srv/input", HID_INPUT);
        srv_start("/srv/output", HID_OUTPUT);
        
        int rc = compositor(HID_INPUT, HID_COMPOSITOR_SERVER);
        if (rc == EOK) {
                gui_start("/app/vlaunch", HID_COMPOSITOR_SERVER);
                gui_start("/app/vterm", HID_COMPOSITOR_SERVER);
        } else {
                rc = console(HID_INPUT, HID_OUTPUT);
                if (rc == EOK) {
#ifndef CONFIG_VC_COUNT
#define CONFIG_VC_COUNT 6
#endif
                        switch((unsigned)CONFIG_VC_COUNT) {
                        default:
                        case 6: getterm("term/vc5", "/app/bdsh", false);
                        case 5: getterm("term/vc4", "/app/bdsh", false);
                        case 4: getterm("term/vc3", "/app/bdsh", false);
                        case 3: getterm("term/vc2", "/app/bdsh", false);
                        case 2: getterm("term/vc1", "/app/bdsh", false);
                        case 1: getterm("term/vc0", "/app/bdsh", true);
                        }
#ifdef CONFIG_KERNEL_LOG_VC_6
                        getterm("term/vc6", "/app/klog", false);
#endif
                }
        }
        srv_start("/srv/hound");
        
        return 0;
}

/** @}
 */