mirror of
https://github.com/troglobit/finit.git
synced 2026-10-02 05:52:48 +07:00
Joachim Nilsson
65c9e7ebc6
Restructure start by calling the plugin loader earlier. This makes it
possible to run hooks even earlier. This also adds a new hook:
HOOK_ROOTFS_UP which runs as soon as the system root (/) is available.
Another very notable change is the slow refactor of helpers.c into a finit
helper library called libite.so (-lite). This is a light-weight
Also, lots of misc. fixes all over the place. Signal handling still really
needs to be looked into once more!
Makefile:
Add dependency handling for parallell build
Add libite library
ChangeLog:
Update with new 1.4 release. There is a lot of fixes!
libite/:
Collection of utility functions and C library extensions for
finit & its plugins
reboot.c:
New reboot tool. Simply sends SIGINT to PID 1
finit.h:
Cleanup old LISTEN_INITCTL define, code is in an optional plugin now
finit.c:
Let mdev/udev run *after* cls()
Add useful debug statement for /proc/cmdline
Earlier plugin load => new early hook point
Show OK/FAIL for total plugin load, not for each plugin => speedup
helpers.h:
Rename syslog macros to prevent common name clashes (DEBUG/ERROR)
Add __FILE__ to _e(), _d() and _pe() macros
helpers.c:
In ifconfig() the addr and mask arguments are now optional
The copyfile() has been moved to libite.so
Temporarily remove const directive from some functions to build
Use DFLSIG() macro in run_getty() to simplify code
plugin.h:
Add new HOOK_ROOTFS_UP hook
plugin.c:
Fix init_plugins() to actually register the plugin's I/O fd
Skip verbose listing of all plugins in plugin_load_all()
svc.c:
svc_start(): Dito
plugins/Makefile:
Inherit CFLAGS and LDFLAGS, but make sure to filter out -rdynamic
from LDFLAGS, it's used by the daemon, only
plugins/initctl.c:
New includes after helpers.h refactor
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/* Optional /dev/initctl FIFO monitor
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*
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* Copyright (c) 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>
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* Copyright (c) 2008-2012 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 <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 "helpers.h"
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#include "plugin.h"
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#include "sig.h"
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#define INIT_MAGIC 0x03091969
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#define INIT_CMD_RUNLVL 1
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struct init_request {
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int magic; /* Magic number */
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int cmd; /* What kind of request */
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int runlevel; /* Runlevel to change to */
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int sleeptime; /* Time between TERM and KILL */
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char data[368];
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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 read_initctl(void *UNUSED(arg), int fd, int UNUSED(events))
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{
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struct init_request request;
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_d("Receiving request on %s...", FINIT_FIFO);
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while (1) {
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ssize_t len = read(fd, &request, sizeof(request));
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if (-1 == len) {
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_d("Error %d", errno);
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break; /* Probably EAGAIN */
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}
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if (request.magic != INIT_MAGIC)
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continue;
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_d("Magic OK...");
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if (request.cmd == INIT_CMD_RUNLVL) {
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switch (request.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 '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", request.runlevel);
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break;
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}
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} else {
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_d("Unsupported cmd: %d", request.cmd);
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}
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}
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}
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static plugin_t plugin = {
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.io = {
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.cb = read_initctl,
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.flags = PLUGIN_IO_READ,
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},
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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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mkfifo(FINIT_FIFO, 0600);
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plugin.io.fd = open(FINIT_FIFO, O_RDONLY | O_NONBLOCK);
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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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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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