mirror of
https://github.com/troglobit/finit.git
synced 2026-10-01 05:22:48 +07:00
Joachim Nilsson
f902505b5d
When building a static Finit the plugins do not get a unique name automatically from the file. This led to only the first plugin being loaded, since its name was 'unknown' it was registered as such and all other plugins conflicted, since 'unknown' was already ... known and loaded. This patch gives all plugins a default name, __FILE__, making it possible to use all of them when building a static Finit. Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/* Optional /dev/initctl FIFO monitor, for receiving commands from telinit
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*
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* Copyright (c) 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>
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* Copyright (c) 2008-2015 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 "../config.h" /* Generated by configure script */
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#include <errno.h>
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#include <fcntl.h> /* O_RDONLY et al */
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#include <signal.h>
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#include <string.h>
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#include <unistd.h> /* read() */
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#include <sys/stat.h>
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#include "../finit.h"
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#include "../conf.h"
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#include "../helpers.h"
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#include "../plugin.h"
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#include "../sig.h"
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#include "../service.h"
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#include "libite/lite.h"
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static void parse(void *arg, int fd, int events);
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static plugin_t plugin = {
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.name = __FILE__,
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.io = {
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.cb = parse,
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.flags = PLUGIN_IO_READ,
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},
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};
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static void fifo_open(void)
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{
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plugin.io.fd = open(FINIT_FIFO, O_RDWR | O_NONBLOCK | O_CLOEXEC);
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if (-1 == plugin.io.fd) {
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_e("Failed opening %s FIFO, error %d: %s", FINIT_FIFO, errno, strerror(errno));
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return;
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}
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}
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/* Standard reboot/shutdown utilities talk to init using /dev/initctl.
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* We should check if the fifo was recreated and reopen it.
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*/
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static void parse(void *UNUSED(arg), int fd, int UNUSED(events))
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{
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struct init_request rq;
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while (1) {
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ssize_t len = read(fd, &rq, sizeof(rq));
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if (len <= 0) {
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if (-1 == len) {
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if (EINTR == errno)
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continue;
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if (EAGAIN == errno)
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break;
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_e("Failed reading initctl request, error %d: %s", errno, strerror(errno));
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}
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_d("Nothing to do, bailing out.");
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break;
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}
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if (rq.magic != INIT_MAGIC || len != sizeof(rq)) {
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_e("Invalid initctl request.");
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break;
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}
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switch (rq.cmd) {
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case INIT_CMD_RUNLVL:
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switch (rq.runlevel) {
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case '0':
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_d("Halting system (SIGUSR2)");
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do_shutdown(SIGUSR2);
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break;
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case 's':
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case 'S':
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_d("Cannot enter bootstrap after boot ...");
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rq.runlevel = '1';
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/* Fall through to regular processing */
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case '1'...'5':
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case '7'...'9':
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_d("Setting new runlevel %c", rq.runlevel);
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service_runlevel(rq.runlevel - '0');
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break;
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case '6':
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_d("Rebooting system (SIGUSR1)");
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do_shutdown(SIGUSR1);
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break;
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default:
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_d("Unsupported runlevel: %d", rq.runlevel);
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break;
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}
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break;
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case INIT_CMD_RELOAD:
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service_reload_dynamic();
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break;
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default:
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_d("Unsupported cmd: %d", rq.cmd);
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break;
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}
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}
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close(fd);
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fifo_open();
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}
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PLUGIN_INIT(plugin_init)
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{
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_d("Setting up %s", FINIT_FIFO);
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makefifo(FINIT_FIFO, 0600);
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fifo_open();
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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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