1 /* 2 * Core Definitions for QAPI/QMP Dispatch 3 * 4 * Copyright IBM, Corp. 2011 5 * 6 * Authors: 7 * Anthony Liguori <aliguori@us.ibm.com> 8 * Michael Roth <mdroth@us.ibm.com> 9 * 10 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. 11 * See the COPYING.LIB file in the top-level directory. 12 * 13 */ 14 15 #include "qemu/osdep.h" 16 #include "qapi/qmp/dispatch.h" 17 18 static QTAILQ_HEAD(QmpCommandList, QmpCommand) qmp_commands = 19 QTAILQ_HEAD_INITIALIZER(qmp_commands); 20 21 void qmp_register_command(const char *name, QmpCommandFunc *fn, 22 QmpCommandOptions options) 23 { 24 QmpCommand *cmd = g_malloc0(sizeof(*cmd)); 25 26 cmd->name = name; 27 cmd->fn = fn; 28 cmd->enabled = true; 29 cmd->options = options; 30 QTAILQ_INSERT_TAIL(&qmp_commands, cmd, node); 31 } 32 33 void qmp_unregister_command(const char *name) 34 { 35 QmpCommand *cmd = qmp_find_command(name); 36 37 QTAILQ_REMOVE(&qmp_commands, cmd, node); 38 g_free(cmd); 39 } 40 41 QmpCommand *qmp_find_command(const char *name) 42 { 43 QmpCommand *cmd; 44 45 QTAILQ_FOREACH(cmd, &qmp_commands, node) { 46 if (strcmp(cmd->name, name) == 0) { 47 return cmd; 48 } 49 } 50 return NULL; 51 } 52 53 static void qmp_toggle_command(const char *name, bool enabled) 54 { 55 QmpCommand *cmd; 56 57 QTAILQ_FOREACH(cmd, &qmp_commands, node) { 58 if (strcmp(cmd->name, name) == 0) { 59 cmd->enabled = enabled; 60 return; 61 } 62 } 63 } 64 65 void qmp_disable_command(const char *name) 66 { 67 qmp_toggle_command(name, false); 68 } 69 70 void qmp_enable_command(const char *name) 71 { 72 qmp_toggle_command(name, true); 73 } 74 75 bool qmp_command_is_enabled(const QmpCommand *cmd) 76 { 77 return cmd->enabled; 78 } 79 80 const char *qmp_command_name(const QmpCommand *cmd) 81 { 82 return cmd->name; 83 } 84 85 bool qmp_has_success_response(const QmpCommand *cmd) 86 { 87 return !(cmd->options & QCO_NO_SUCCESS_RESP); 88 } 89 90 void qmp_for_each_command(qmp_cmd_callback_fn fn, void *opaque) 91 { 92 QmpCommand *cmd; 93 94 QTAILQ_FOREACH(cmd, &qmp_commands, node) { 95 fn(cmd, opaque); 96 } 97 } 98