source: mainline/uspace/srv/volsrv/mkfs.c

/*
 * Copyright (c) 2015 Jiri Svoboda
 * 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 volsrv
 * @{
 */
/**
 * @file Filesystem creation
 * @brief
 */

#include <errno.h>
#include <io/log.h>
#include <loc.h>
#include <stdarg.h>
#include <stdlib.h>
#include <str.h>
#include <str_error.h>
#include <task.h>
#include <types/vol.h>

#include "mkfs.h"

static errno_t cmd_runl(const char *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;
        task_wait_t wait;
        errno_t rc = task_spawn(&id, &wait, path, cnt, ap);
        va_end(ap);

        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error spawning %s (%s)",
                    path, str_error(rc));
                return rc;
        }

        if (!id) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error spawning %s "
                    "(invalid task ID)", path);
                return EINVAL;
        }

        task_exit_t texit;
        int retval;
        rc = task_wait(&wait, &texit, &retval);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error waiting for %s (%s)",
                    path, str_error(rc));
                return rc;
        }

        if (texit != TASK_EXIT_NORMAL) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Command %s unexpectedly "
                    "terminated", path);
                return EINVAL;
        }

        if (retval != 0) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Command %s returned non-zero "
                    "exit code %d)", path, retval);
        }

        return retval == 0 ? EOK : EPARTY;
}

errno_t volsrv_part_mkfs(service_id_t sid, vol_fstype_t fstype, const char *label)
{
        const char *cmd;
        char *svc_name;
        errno_t rc;

        cmd = NULL;
        switch (fstype) {
        case fs_exfat:
                cmd = "/app/mkexfat";
                break;
        case fs_fat:
                cmd = "/app/mkfat";
                break;
        case fs_minix:
                cmd = "/app/mkmfs";
                break;
        case fs_ext4:
                cmd = "/app/mkext4";
                break;
        case fs_cdfs:
                cmd = NULL;
                break;
        }

        if (cmd == NULL)
                return ENOTSUP;

        rc = loc_service_get_name(sid, &svc_name);
        if (rc != EOK)
                return rc;

        if (str_size(label) > 0)
                rc = cmd_runl(cmd, cmd, "--label", label, svc_name, NULL);
        else
                rc = cmd_runl(cmd, cmd, svc_name, NULL);

        free(svc_name);
        return rc;
}

void volsrv_part_get_lsupp(vol_fstype_t fstype, vol_label_supp_t *vlsupp)
{
        vlsupp->supported = false;

        switch (fstype) {
        case fs_exfat:
        case fs_ext4:
        case fs_fat:
                vlsupp->supported = true;
                break;
        case fs_minix:
        case fs_cdfs:
                break;
        }
}

/** @}
 */