mirror of
https://github.com/troglobit/finit.git
synced 2026-10-01 05:22:48 +07:00
Tobias Waldekranz
2232aea0f7
Old event system has been replaced with a more generic condition concept. The idea is that finit plugins may provide arbitrary conditions that services may specify as dependencies that they require to run. In order to accomodate this, the service management has been redesigned to use a state machine.
119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/* Event aggregator, also serves as event cache, remembering GW and IFUP states
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*
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* Copyright (c) 2015 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* 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 THE
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* 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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <libite/lite.h>
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#include <stdio.h>
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#include "finit.h"
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#include "cond.h"
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#include "service.h"
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static inline int timespec_newer(const struct timespec *a,
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const struct timespec *b)
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{
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if (a->tv_sec != b->tv_sec)
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return a->tv_sec > b->tv_sec;
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return a->tv_nsec > b->tv_nsec;
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}
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const char *condstr(enum cond_state s)
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{
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static const char *strs[] = {
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[COND_OFF] = "off",
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[COND_FLUX] = "flux",
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[COND_ON] = "on",
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};
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return strs[s];
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}
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const char *cond_path(const char *name)
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{
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static char file[MAX_ARG_LEN];
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snprintf(file, sizeof(file), COND_PATH "/%s", name);
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return file;
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}
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enum cond_state cond_get_path(const char *path)
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{
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struct stat st, st_reconf;
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if (stat(path, &st))
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return COND_OFF;
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if (stat(COND_RECONF, &st_reconf) ||
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timespec_newer(&st.st_mtim, &st_reconf.st_mtim))
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return COND_ON;
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return COND_FLUX;
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}
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enum cond_state cond_get(const char *name)
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{
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return cond_get_path(cond_path(name));
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}
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enum cond_state cond_get_agg(const char *names)
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{
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static char conds[MAX_ARG_LEN];
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enum cond_state s = COND_ON;
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char *cond;
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if (!names)
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return COND_ON;
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strlcpy(conds, names, sizeof(conds));
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for (cond = strtok(conds, ","); s && cond; cond = strtok(NULL, ","))
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s = min(s, cond_get(cond));
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return s;
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}
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int cond_affects(const char *name, const char *names)
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{
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static char conds[MAX_ARG_LEN];
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char *cond;
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if (!name || !names)
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return 0;
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strlcpy(conds, names, sizeof(conds));
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for (cond = strtok(conds, ","); cond; cond = strtok(NULL, ","))
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if (!strcmp(cond, name))
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return 1;
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return 0;
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}
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/**
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* Local Variables:
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* version-control: t
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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