509d64bd18
Enforces a single registration of a module with a subsystem. module_register() now returns -EBUSY if module is already registered. Adds support for BMON_MODULE_AUTO to flag modules that should be autoloaded upon the first call to module_set(). Loading will succeed if the probe() function succeeds.
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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* module.h Module API
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*
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* Copyright (c) 2001-2013 Thomas Graf <tgraf@suug.ch>
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* Copyright 2013 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __BMON_MODULE_H_
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#define __BMON_MODULE_H_
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#include <bmon/bmon.h>
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#include <bmon/conf.h>
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#define BMON_MODULE_ENABLED (1 << 0) /* Enabled */
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#define BMON_MODULE_DEFAULT (1 << 1) /* Suitable as default */
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#define BMON_MODULE_AUTO (1 << 2) /* Auto enable */
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struct bmon_subsys;
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struct bmon_module
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{
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char * m_name;
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int (*m_init)(void);
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int (*m_probe)(void);
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void (*m_shutdown)(void);
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void (*m_parse_opt)(const char *, const char *);
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void (*m_pre)(void);
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void (*m_do)(void);
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void (*m_post)(void);
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int m_flags;
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struct list_head m_list;
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struct bmon_subsys *m_subsys;
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};
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struct bmon_subsys
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{
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char * s_name;
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int s_nmod;
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struct list_head s_mod_list;
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void (*s_activate_default)(void);
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struct list_head s_list;
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};
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extern void module_foreach_run_enabled_pre(struct bmon_subsys *);
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extern void module_foreach_run_enabled(struct bmon_subsys *);
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extern void module_foreach_run_enabled_post(struct bmon_subsys *);
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extern int module_register(struct bmon_subsys *, struct bmon_module *);
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extern int module_set(struct bmon_subsys *, const char *);
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extern void module_init(void);
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extern void module_shutdown(void);
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extern void module_register_subsys(struct bmon_subsys *);
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#endif
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