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102 lines
3.7 KiB
C
102 lines
3.7 KiB
C
/*
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* Copyright (c) 2008, XenSource Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of XenSource Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __TAP_CTL_H__
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#define __TAP_CTL_H__
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#include <syslog.h>
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#include <errno.h>
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#include <tapdisk-message.h>
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extern int tap_ctl_debug;
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#ifdef TAPCTL
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#define DBG(_f, _a...) \
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do { \
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if (tap_ctl_debug) \
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printf(_f, ##_a); \
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} while (0)
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#define DPRINTF(_f, _a...) syslog(LOG_INFO, _f, ##_a)
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#define EPRINTF(_f, _a...) syslog(LOG_ERR, "tap-err:%s: " _f, __func__, ##_a)
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#define PERROR(_f, _a...) syslog(LOG_ERR, "tap-err:%s: " _f ": %s", __func__, ##_a, \
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strerror(errno))
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#endif
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void tap_ctl_version(int *major, int *minor);
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int tap_ctl_kernel_version(int *major, int *minor);
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int tap_ctl_check_blktap(const char **message);
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int tap_ctl_check_version(const char **message);
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int tap_ctl_check(const char **message);
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int tap_ctl_connect(const char *path, int *socket);
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int tap_ctl_connect_id(int id, int *socket);
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int tap_ctl_read_message(int fd, tapdisk_message_t *message, int timeout);
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int tap_ctl_write_message(int fd, tapdisk_message_t *message, int timeout);
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int tap_ctl_send_and_receive(int fd, tapdisk_message_t *message, int timeout);
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int tap_ctl_connect_send_and_receive(int id,
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tapdisk_message_t *message, int timeout);
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char *tap_ctl_socket_name(int id);
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typedef struct {
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int id;
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pid_t pid;
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int minor;
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int state;
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char *type;
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char *path;
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} tap_list_t;
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int tap_ctl_get_driver_id(const char *handle);
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int tap_ctl_list(tap_list_t ***list);
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void tap_ctl_free_list(tap_list_t **list);
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int tap_ctl_find(const char *type, const char *path, tap_list_t *tap);
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int tap_ctl_allocate(int *minor, char **devname);
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int tap_ctl_free(const int minor);
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int tap_ctl_create(const char *params, char **devname);
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int tap_ctl_destroy(const int id, const int minor);
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int tap_ctl_spawn(void);
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pid_t tap_ctl_get_pid(const int id);
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int tap_ctl_attach(const int id, const int minor);
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int tap_ctl_detach(const int id, const int minor);
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int tap_ctl_open(const int id, const int minor, const char *params);
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int tap_ctl_close(const int id, const int minor, const int force);
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int tap_ctl_pause(const int id, const int minor);
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int tap_ctl_unpause(const int id, const int minor, const char *params);
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int tap_ctl_blk_major(void);
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#endif
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