LXR qemu/include/qemu-io.h

   1/*
   2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#ifndef QEMU_IO_H
  19#define QEMU_IO_H
  20
  21#include "qemu-common.h"
  22
  23#define CMD_FLAG_GLOBAL ((int)0x80000000) /* don't iterate "args" */
  24
  25/* Implement a qemu-io command.
  26 * Operate on @blk using @argc/@argv as the command's arguments, and
  27 * return 0 on success or negative errno on failure.
  28 */
  29typedef int (*cfunc_t)(BlockBackend *blk, int argc, char **argv);
  30
  31typedef void (*helpfunc_t)(void);
  32
  33typedef struct cmdinfo {
  34    const char* name;
  35    const char* altname;
  36    cfunc_t     cfunc;
  37    int         argmin;
  38    int         argmax;
  39    int         canpush;
  40    int         flags;
  41    const char  *args;
  42    const char  *oneline;
  43    helpfunc_t  help;
  44    uint64_t    perm;
  45} cmdinfo_t;
  46
  47extern bool qemuio_misalign;
  48
  49int qemuio_command(BlockBackend *blk, const char *cmd);
  50
  51void qemuio_add_command(const cmdinfo_t *ci);
  52void qemuio_command_usage(const cmdinfo_t *ci);
  53void qemuio_complete_command(const char *input,
  54                             void (*fn)(const char *cmd, void *opaque),
  55                             void *opaque);
  56
  57#endif /* QEMU_IO_H */
  58