| 0,0 → 1,80 |
|---|
| /****************************************************************** |
| * rebootd. |
| * |
| * A daemon which waits on specified UDP port for special string |
| * (password) and reboots the computer. |
| * |
| * Run "./rebootd --help" to see options and parameters. |
| * |
| * Copyleft 2005 Anatoli Klassen |
| * |
| ******************************************************************/ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <syslog.h> |
| |
| #include "common.h" |
| #include "signals.h" |
| |
| static void reconfig_signal(void) |
| { |
| syslog(LOG_INFO, "reconfig"); |
| reconfig_required = 1; |
| } |
| |
| static void quit_signal(void) |
| { |
| syslog(LOG_WARNING, "quit"); |
| quit_required = 1; |
| } |
| |
| static void signal_handler(int sig) |
| { |
| int saved_errno = errno; |
| |
| switch(sig) { |
| case SIGHUP: |
| reconfig_signal(); |
| break; |
| |
| case SIGINT: |
| case SIGTERM: |
| case SIGQUIT: |
| quit_signal(); |
| break; |
| } |
| |
| errno = saved_errno; |
| } |
| |
| static int init_signal_handler(int sig) |
| { |
| struct sigaction sa; |
| |
| sa.sa_flags = 0; |
| sa.sa_handler = signal_handler; |
| sigemptyset(&sa.sa_mask); |
| |
| if(sigaction(sig, &sa, (struct sigaction *)NULL) != 0) { |
| syslog(LOG_ERR, "Cannot register handler for signal %d: %s\n", sig, strerror(errno)); |
| return RESULT_UNEXPECTED; |
| } |
| |
| return RESULT_OK; |
| } |
| |
| int init_signals(void) |
| { |
| if(init_signal_handler(SIGHUP) != RESULT_OK) return RESULT_UNEXPECTED; |
| if(init_signal_handler(SIGINT) != RESULT_OK) return RESULT_UNEXPECTED; |
| if(init_signal_handler(SIGTERM) != RESULT_OK) return RESULT_UNEXPECTED; |
| if(init_signal_handler(SIGQUIT) != RESULT_OK) return RESULT_UNEXPECTED; |
| |
| return RESULT_OK; |
| } |
| |