xen/tools/xl/xl_block.c

/*
 * Copyright 2009-2017 Citrix Ltd and other contributors
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; version 2.1 only. with the special
 * exception on linking described in file LICENSE.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 */

#include <stdlib.h>

#include <libxl.h>
#include <libxl_utils.h>
#include <libxlutil.h>

#include "xl.h"
#include "xl_utils.h"
#include "xl_parse.h"

int main_blockattach(int argc, char **argv)
{
    int opt;
    uint32_t fe_domid;
    libxl_device_disk disk;
    XLU_Config *config = 0;

    SWITCH_FOREACH_OPT(opt, "", NULL, "block-attach", 2) {
        /* No options */
    }

    if (libxl_domain_qualifier_to_domid(ctx, argv[optind], &fe_domid) < 0) {
        fprintf(stderr, "%s is an invalid domain identifier\n", argv[optind]);
        return 1;
    }
    optind++;

    parse_disk_config_multistring
        (&config, argc-optind, (const char* const*)argv + optind, &disk);

    if (dryrun_only) {
        char *json = libxl_device_disk_to_json(ctx, &disk);
        printf("disk: %s\n", json);
        free(json);
        if (ferror(stdout) || fflush(stdout)) { perror("stdout"); exit(-1); }
        return 0;
    }

    if (libxl_device_disk_add(ctx, fe_domid, &disk, 0)) {
        fprintf(stderr, "libxl_device_disk_add failed.\n");
        return 1;
    }
    return 0;
}

int main_blocklist(int argc, char **argv)
{
    int opt;
    int i, nb;
    libxl_device_disk *disks;
    libxl_diskinfo diskinfo;

    SWITCH_FOREACH_OPT(opt, "", NULL, "block-list", 1) {
        /* No options */
    }

    printf("%-5s %-3s %-6s %-5s %-6s %-8s %-30s\n",
           "Vdev", "BE", "handle", "state", "evt-ch", "ring-ref", "BE-path");
    for (argv += optind, argc -= optind; argc > 0; --argc, ++argv) {
        uint32_t domid;
        if (libxl_domain_qualifier_to_domid(ctx, *argv, &domid) < 0) {
            fprintf(stderr, "%s is an invalid domain identifier\n", *argv);
            continue;
        }
        disks = libxl_device_disk_list(ctx, domid, &nb);
        if (!disks) {
            continue;
        }
        for (i=0; i<nb; i++) {
            if (!libxl_device_disk_getinfo(ctx, domid, &disks[i], &diskinfo)) {
                /*      Vdev BE   hdl  st   evch rref BE-path*/
                printf("%-5d %-3d %-6d %-5d %-6d %-8d %-30s\n",
                       diskinfo.devid, diskinfo.backend_id, diskinfo.frontend_id,
                       diskinfo.state, diskinfo.evtch, diskinfo.rref, diskinfo.backend);
                libxl_diskinfo_dispose(&diskinfo);
            }
            libxl_device_disk_dispose(&disks[i]);
        }
        free(disks);
    }
    return 0;
}

int main_blockdetach(int argc, char **argv)
{
    uint32_t domid;
    int opt, rc = 0;
    libxl_device_disk disk;

    SWITCH_FOREACH_OPT(opt, "", NULL, "block-detach", 2) {
        /* No options */
    }

    domid = find_domain(argv[optind]);

    if (libxl_vdev_to_device_disk(ctx, domid, argv[optind+1], &disk)) {
        fprintf(stderr, "Error: Device %s not connected.\n", argv[optind+1]);
        return 1;
    }
    rc = libxl_device_disk_remove(ctx, domid, &disk, 0);
    if (rc) {
        fprintf(stderr, "libxl_device_disk_remove failed.\n");
        return 1;
    }
    libxl_device_disk_dispose(&disk);
    return rc;
}

/*
 * Local variables:
 * mode: C
 * c-basic-offset: 4
 * indent-tabs-mode: nil
 * End:
 */