Ejemplos de guestfs___cmd_add_arg_format en C++ (Cpp)

Ejemplo n.º 1

Archivo: launch-direct.c Proyecto: DanLipsitt/libguestfs

static char *
create_cow_overlay_direct (guestfs_h *g, void *datav, struct drive *drv)
{
  char *overlay = NULL;
  CLEANUP_FREE char *backing_drive = NULL;
  CLEANUP_CMD_CLOSE struct command *cmd = guestfs___new_command (g);
  int r;

  backing_drive = guestfs___drive_source_qemu_param (g, &drv->src);
  if (!backing_drive)
    goto error;

  if (guestfs___lazy_make_tmpdir (g) == -1)
    goto error;

  overlay = safe_asprintf (g, "%s/overlay%d", g->tmpdir, ++g->unique);

  guestfs___cmd_add_arg (cmd, "qemu-img");
  guestfs___cmd_add_arg (cmd, "create");
  guestfs___cmd_add_arg (cmd, "-f");
  guestfs___cmd_add_arg (cmd, "qcow2");
  guestfs___cmd_add_arg (cmd, "-b");
  guestfs___cmd_add_arg (cmd, backing_drive);
  if (drv->src.format) {
    guestfs___cmd_add_arg (cmd, "-o");
    guestfs___cmd_add_arg_format (cmd, "backing_fmt=%s", drv->src.format);
  }
  guestfs___cmd_add_arg (cmd, overlay);
  r = guestfs___cmd_run (cmd);
  if (r == -1)
    goto error;
  if (!WIFEXITED (r) || WEXITSTATUS (r) != 0) {
    guestfs___external_command_failed (g, r, "qemu-img create", backing_drive);
    goto error;
  }

  /* Caller sets g->overlay in the handle to this, and then manages
   * the memory.
   */
  return overlay;

 error:
  free (overlay);

  return NULL;
}

Ejemplo n.º 2

Archivo: create.c Proyecto: vasi/libguestfs

static int
disk_create_qcow2 (guestfs_h *g, const char *orig_filename, int64_t size,
                   const char *backingfile,
                   const struct guestfs_disk_create_argv *optargs)
{
  CLEANUP_FREE char *filename = NULL;
  const char *backingformat = NULL;
  const char *preallocation = NULL;
  const char *compat = NULL;
  int clustersize = -1;
  CLEANUP_FREE_STRINGSBUF DECLARE_STRINGSBUF (optionsv);
  CLEANUP_CMD_CLOSE struct command *cmd = guestfs___new_command (g);
  int r;

  /* If the filename is something like "file:foo" then qemu-img will
   * try to interpret that as "foo" in the file:/// protocol.  To
   * avoid that, if the path is relative prefix it with "./" since
   * qemu-img won't try to interpret such a path.
   */
  if (orig_filename[0] != '/')
    filename = safe_asprintf (g, "./%s", orig_filename);
  else
    filename = safe_strdup (g, orig_filename);

  if (optargs->bitmask & GUESTFS_DISK_CREATE_BACKINGFORMAT_BITMASK) {
    backingformat = optargs->backingformat;
    if (STRNEQ (backingformat, "raw") && STRNEQ (backingformat, "qcow2")) {
      error (g, _("invalid value for backingformat parameter '%s'"),
             backingformat);
      return -1;
    }
  }
  if (optargs->bitmask & GUESTFS_DISK_CREATE_PREALLOCATION_BITMASK) {
    preallocation = optargs->preallocation;
    if (STRNEQ (preallocation, "off") && STRNEQ (preallocation, "metadata")) {
      error (g, _("invalid value for preallocation parameter '%s'"),
             preallocation);
      return -1;
    }
  }
  if (optargs->bitmask & GUESTFS_DISK_CREATE_COMPAT_BITMASK) {
    compat = optargs->compat;
    if (STRNEQ (compat, "0.10") && STRNEQ (compat, "1.1")) {
      error (g, _("invalid value for compat parameter '%s'"), compat);
      return -1;
    }
  }
  if (optargs->bitmask & GUESTFS_DISK_CREATE_CLUSTERSIZE_BITMASK) {
    clustersize = optargs->clustersize;
    if (clustersize < 512 || clustersize > 2097152 ||
        !is_power_of_2 ((unsigned) clustersize)) {
      error (g, _("invalid value for clustersize parameter '%d'"),
             clustersize);
      return -1;
    }
  }

  /* Assemble the qemu-img command line. */
  guestfs___cmd_add_arg (cmd, "qemu-img");
  guestfs___cmd_add_arg (cmd, "create");
  guestfs___cmd_add_arg (cmd, "-f");
  guestfs___cmd_add_arg (cmd, "qcow2");

  /* -o parameter. */
  if (backingfile) {
    CLEANUP_FREE char *p = qemu_escape_param (g, backingfile);
    guestfs___add_sprintf (g, &optionsv, "backing_file=%s", p);
  }
  if (backingformat)
    guestfs___add_sprintf (g, &optionsv, "backing_fmt=%s", backingformat);
  if (preallocation)
    guestfs___add_sprintf (g, &optionsv, "preallocation=%s", preallocation);
  if (compat)
    guestfs___add_sprintf (g, &optionsv, "compat=%s", compat);
  if (clustersize >= 0)
    guestfs___add_sprintf (g, &optionsv, "cluster_size=%d", clustersize);
  guestfs___end_stringsbuf (g, &optionsv);

  if (optionsv.size > 1) {
    CLEANUP_FREE char *options = guestfs___join_strings (",", optionsv.argv);
    guestfs___cmd_add_arg (cmd, "-o");
    guestfs___cmd_add_arg (cmd, options);
  }

  /* Complete the command line. */
  guestfs___cmd_add_arg (cmd, filename);
  if (size >= 0)
    guestfs___cmd_add_arg_format (cmd, "%" PRIi64, size);

  r = guestfs___cmd_run (cmd);
  if (!WIFEXITED (r) || WEXITSTATUS (r) != 0) {
    guestfs___external_command_failed (g, r, "qemu-img", orig_filename);
    return -1;
  }

  return 0;
}