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Fan-Control-Daemon
Commit 7e65d1e6 authored by Daniel Graziotin's avatar Daniel Graziotin
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Fixes #9

parent cd3c15ba
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Showing with 192 additions and 42 deletions
mbpfan.init
View file @ 7e65d1e6
......@@ -77,23 +77,23 @@ case "$1" in
status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
;;
restart|force-reload)
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
exit 3
......
src/daemon.c
View file @ 7e65d1e6
/**
* Credits: http://peterlombardo.wikidot.com/linux-daemon-in-c
* Copyright (C) 2012 Peter Lombardo <http://peterlombardo.wikidot.com/linux-daemon-in-c>
* Modifications (2012) by Daniel Graziotin <dgraziotin@task3.cc>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
......@@ -16,8 +29,33 @@
#include "mbpfan.h"
#include "global.h"
#define DAEMON_NAME "mbpfan"
#define PID_FILE "/var/run/mbpfan.pid"
int write_pid(int pid){
FILE *file = NULL;
file = fopen(program_pid, "w");
if(file != NULL) {
fprintf(file, "%d", pid);
fclose(file);
return 1;
}else{
return 0;
}
}
int read_pid(){
FILE *file = NULL;
int pid = -1;
file = fopen(program_pid, "r");
if(file != NULL) {
fscanf(file, "%d", &pid);
fclose(file);
return pid;
}
return -1;
}
int delete_pid(){
return remove(program_pid);
}
void signal_handler(int signal)
......@@ -27,15 +65,18 @@ void signal_handler(int signal)
case SIGHUP:
//TODO: restart myself
syslog(LOG_WARNING, "Received SIGHUP signal.");
delete_pid();
exit(0);
break;
case SIGTERM:
syslog(LOG_WARNING, "Received SIGTERM signal.");
delete_pid();
//TODO: free resources
exit(0);
break;
case SIGINT:
syslog(LOG_WARNING, "Received SIGINT signal.");
delete_pid();
//TODO: free resources
exit(0);
default:
......@@ -44,8 +85,7 @@ void signal_handler(int signal)
}
}
void go_daemon(void (*function)())
void go_daemon(void (*mbpfan)())
{
// Setup signal handling before we start
......@@ -53,36 +93,37 @@ void go_daemon(void (*function)())
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
syslog(LOG_INFO, "%s starting up", DAEMON_NAME);
syslog(LOG_INFO, "%s starting up", program_name);
// Setup syslog logging - see SETLOGMASK(3)
if(verbose) {
setlogmask(LOG_UPTO(LOG_DEBUG));
openlog(DAEMON_NAME, LOG_CONS | LOG_NDELAY | LOG_PERROR | LOG_PID, LOG_USER);
openlog(program_name, LOG_CONS | LOG_NDELAY | LOG_PERROR | LOG_PID, LOG_USER);
} else {
setlogmask(LOG_UPTO(LOG_INFO));
openlog(DAEMON_NAME, LOG_CONS, LOG_USER);
openlog(program_name, LOG_CONS, LOG_USER);
}
pid_t pid;
pid_t sid;
pid_t pid_slave;
pid_t sid_slave;
if (daemonize) {
pid = fork();
if (pid < 0) {
pid_slave = fork();
if (pid_slave < 0) {
exit(EXIT_FAILURE);
}
if (pid > 0) {
exit(EXIT_SUCCESS);
if (pid_slave > 0) {
// kill the father
exit(EXIT_SUCCESS);
}
umask(0);
umask(0022);
// new SID for the child process
sid = setsid();
if (sid < 0) {
// new sid_slave for the child process
sid_slave = setsid();
if (sid_slave < 0) {
exit(EXIT_FAILURE);
}
......@@ -90,17 +131,48 @@ void go_daemon(void (*function)())
exit(EXIT_FAILURE);
}
/* Close out the standard file descriptors */
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
}
int current_pid = getpid();
if (read_pid() == -1){
if (verbose){
printf("Writing a new .pid file with value %d at: %s", current_pid, program_pid);
syslog(LOG_INFO, "Writing a new .pid file with value %d at: %s", current_pid, program_pid);
}
if (write_pid(current_pid) == 0){
syslog(LOG_ERR, "Can not create a .pid file at: %s. Aborting", program_pid);
if (verbose){
printf("ERROR: Can not create a .pid file at: %s. Aborting", program_pid);
}
exit(EXIT_FAILURE);
}else{
if (verbose){
printf("Successfully written a new .pid file with value %d at: %s", current_pid, program_pid);
syslog(LOG_INFO, "Successfully written a new .pid file with value %d at: %s", current_pid, program_pid);
}
}
}else{
syslog(LOG_ERR, "A previously created .pid file exists at: %s. Aborting", program_pid);
if (verbose){
printf("ERROR: a previously created .pid file exists at: %s.\n Aborting\n", program_pid);
}
exit(EXIT_FAILURE);
}
function();
mbpfan();
if(daemonize)
syslog(LOG_INFO, "%s daemon exiting", DAEMON_NAME);
if(daemonize){
syslog(LOG_INFO, "%s daemon exiting", program_name);
}
return;
}
src/daemon.h
View file @ 7e65d1e6
/**
* Copyright (C) (2012) Daniel Graziotin <dgraziotin@task3.cc>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
/**
* Write the PID of the forked daemon to the
* .pid file defined in char *program_pid
* Return TRUE on success
* Return FALSE otherwise
*/
int write_pid(int pid);
/**
* Read PID of the forked daemon from the
* .pid file defined in char *program_pid
* Return the pid on success
* Return -1 otherwise
*/
int read_pid();
/**
* Deletes the .pid file defined in
* char *program_pid
* Return TRUE on success
* Return FALSE otherwise
*/
int delete_pid();
/**
* ...handles signals :-)
*/
void signal_handler(int signal);
/**
* Daemonizes
*/
......
src/global.h
View file @ 7e65d1e6
extern int daemonize;
extern int verbose;
\ No newline at end of file
extern int verbose;
extern const char* program_name;
extern const char* program_pid;
\ No newline at end of file
src/main.c
View file @ 7e65d1e6
/**
* Copyright (C) (2012) Daniel Graziotin <dgraziotin@task3.cc>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
......@@ -8,6 +23,9 @@
int daemonize = 1;
int verbose = 0;
const char *program_name = "mbpfan";
const char *program_pid = "/var/run/mbpfan.pid";
void print_usage(int argc, char *argv[])
{
if (argc >=1) {
......@@ -44,7 +62,7 @@ int main(int argc, char *argv[])
}
// pointer to mbpfan() function in mbpfan.c
void (*function)() = mbpfan;
go_daemon(function);
void (*mbpfan)() = mbpfan;
go_daemon(mbpfan);
exit(0);
}
\ No newline at end of file
src/mbpfan.c
View file @ 7e65d1e6
......@@ -18,7 +18,7 @@
*
* Notes:
* Assumes any number of processors and fans (max. 10)
* It Uses only the temperatures from the processors as input.
* It uses only the temperatures from the processors as input.
* Requires coretemp and applesmc kernel modules to be loaded.
* Requires root use
*
......
src/mbpfan.h
View file @ 7e65d1e6
/**
* Copyright (C) 2010 Allan McRae <allan@archlinux.org>
* Modifications (2012) by Daniel Graziotin <dgraziotin@task3.cc>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
/** Basic fan speed parameters
*/
extern int min_fan_speed;
......
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