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indent.py `git ls-files | pcregrep '\.[ch]$' | pcregrep -v '^(ldpd|babeld|nhrpd)/'` Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
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* Copyright (c) 2015-16 David Lamparter, for NetDEF, 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 in
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* 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 OR
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* 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 _FRR_MODULE_H
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#define _FRR_MODULE_H
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#include <stdint.h>
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#include <stdbool.h>
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#if !defined(__GNUC__)
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#error module code needs GCC visibility extensions
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#elif __GNUC__ < 4
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#error module code needs GCC visibility extensions
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#else
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# define DSO_PUBLIC __attribute__ ((visibility ("default")))
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# define DSO_SELF __attribute__ ((visibility ("protected")))
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# define DSO_LOCAL __attribute__ ((visibility ("hidden")))
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#endif
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struct frrmod_runtime;
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struct frrmod_info {
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/* single-line few-word title */
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const char *name;
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/* human-readable version number, should not contain spaces */
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const char *version;
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/* one-paragraph description */
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const char *description;
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int (*init)(void);
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};
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/* primary entry point structure to be present in loadable module under
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* "_frrmod_this_module" dlsym() name
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*
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* note space for future extensions is reserved below, so other modules
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* (e.g. memory management, hooks) can add fields
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*
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* const members/info are in frrmod_info.
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*/
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struct frrmod_runtime {
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struct frrmod_runtime *next;
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const struct frrmod_info *info;
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void *dl_handle;
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bool finished_loading;
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char *load_name;
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char *load_args;
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};
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/* space-reserving foo */
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struct _frrmod_runtime_size {
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struct frrmod_runtime r;
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/* this will barf if frrmod_runtime exceeds 1024 bytes ... */
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uint8_t space[1024 - sizeof(struct frrmod_runtime)];
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};
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union _frrmod_runtime_u {
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struct frrmod_runtime r;
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struct _frrmod_runtime_size s;
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};
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extern union _frrmod_runtime_u _frrmod_this_module;
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#define THIS_MODULE (&_frrmod_this_module.r)
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#define FRR_COREMOD_SETUP(...) \
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static const struct frrmod_info _frrmod_info = {__VA_ARGS__}; \
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DSO_LOCAL union _frrmod_runtime_u _frrmod_this_module = { \
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.r.info = &_frrmod_info, \
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};
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#define FRR_MODULE_SETUP(...) \
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FRR_COREMOD_SETUP(__VA_ARGS__) \
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DSO_SELF struct frrmod_runtime *frr_module = &_frrmod_this_module.r;
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extern struct frrmod_runtime *frrmod_list;
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extern void frrmod_init(struct frrmod_runtime *modinfo);
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extern struct frrmod_runtime *frrmod_load(const char *spec, const char *dir,
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char *err, size_t err_len);
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#if 0
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/* not implemented yet */
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extern void frrmod_unload(struct frrmod_runtime *module);
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#endif
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#endif /* _FRR_MODULE_H */
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