debuggers.hg

view tools/blktap2/control/tap-ctl.h @ 22848:6341fe0f4e5a

Added tag 4.1.0-rc2 for changeset 9dca60d88c63
author Keir Fraser <keir@xen.org>
date Tue Jan 25 14:06:55 2011 +0000 (2011-01-25)
parents 556ece996c0e
children
line source
1 /*
2 * Copyright (c) 2008, XenSource Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of XenSource Inc. nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
20 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28 #ifndef __TAP_CTL_H__
29 #define __TAP_CTL_H__
31 #include <syslog.h>
32 #include <errno.h>
33 #include <tapdisk-message.h>
35 extern int tap_ctl_debug;
37 #ifdef TAPCTL
38 #define DBG(_f, _a...) \
39 do { \
40 if (tap_ctl_debug) \
41 printf(_f, ##_a); \
42 } while (0)
44 #define DPRINTF(_f, _a...) syslog(LOG_INFO, _f, ##_a)
45 #define EPRINTF(_f, _a...) syslog(LOG_ERR, "tap-err:%s: " _f, __func__, ##_a)
46 #define PERROR(_f, _a...) syslog(LOG_ERR, "tap-err:%s: " _f ": %s", __func__, ##_a, \
47 strerror(errno))
48 #endif
50 void tap_ctl_version(int *major, int *minor);
51 int tap_ctl_kernel_version(int *major, int *minor);
53 int tap_ctl_check_blktap(const char **message);
54 int tap_ctl_check_version(const char **message);
55 int tap_ctl_check(const char **message);
57 int tap_ctl_connect(const char *path, int *socket);
58 int tap_ctl_connect_id(int id, int *socket);
59 int tap_ctl_read_message(int fd, tapdisk_message_t *message, int timeout);
60 int tap_ctl_write_message(int fd, tapdisk_message_t *message, int timeout);
61 int tap_ctl_send_and_receive(int fd, tapdisk_message_t *message, int timeout);
62 int tap_ctl_connect_send_and_receive(int id,
63 tapdisk_message_t *message, int timeout);
64 char *tap_ctl_socket_name(int id);
66 typedef struct {
67 int id;
68 pid_t pid;
69 int minor;
70 int state;
71 char *type;
72 char *path;
73 } tap_list_t;
75 int tap_ctl_get_driver_id(const char *handle);
77 int tap_ctl_list(tap_list_t ***list);
78 void tap_ctl_free_list(tap_list_t **list);
79 int tap_ctl_find_minor(const char *type, const char *path);
81 int tap_ctl_allocate(int *minor, char **devname);
82 int tap_ctl_free(const int minor);
84 int tap_ctl_create(const char *params, char **devname);
85 int tap_ctl_destroy(const int id, const int minor);
87 int tap_ctl_spawn(void);
88 pid_t tap_ctl_get_pid(const int id);
90 int tap_ctl_attach(const int id, const int minor);
91 int tap_ctl_detach(const int id, const int minor);
93 int tap_ctl_open(const int id, const int minor, const char *params);
94 int tap_ctl_close(const int id, const int minor, const int force);
96 int tap_ctl_pause(const int id, const int minor);
97 int tap_ctl_unpause(const int id, const int minor, const char *params);
99 int tap_ctl_blk_major(void);
101 #endif