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68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/* Save and restore RTC using hwclock
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*
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* Copyright (c) 2012 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 "finit.h"
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#include "helpers.h"
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#include "plugin.h"
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static void save(void *UNUSED(arg))
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{
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_d("Saving system clock to RTC ...");
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/* -w,--systohc, -u,--utc */
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run_interactive("/sbin/hwclock -w -u", "Saving system time (UTC) to RTC");
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}
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static void restore(void *UNUSED(arg))
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{
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_d("Restoring system clock from RTC ...");
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/* -s,--hctosys, -u,--utc */
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run_interactive("/sbin/hwclock -s -u", "Restoring system clock (UTC) from RTC");
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}
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static plugin_t plugin = {
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.hook[HOOK_BASEFS_UP] = {
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.cb = restore
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},
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.hook[HOOK_SHUTDOWN] = {
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.cb = save
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}
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};
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PLUGIN_INIT(plugin_init)
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{
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plugin_register(&plugin);
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}
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PLUGIN_EXIT(plugin_exit)
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{
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plugin_unregister(&plugin);
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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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