diff options
Diffstat (limited to 'src/signals.c')
| -rw-r--r-- | src/signals.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/src/signals.c b/src/signals.c deleted file mode 100644 index cd23773..0000000 --- a/src/signals.c +++ /dev/null @@ -1,209 +0,0 @@ -/*- - * redshift-ng - Automatically adjust display colour temperature according the Sun - * - * Copyright (c) 2009-2018 Jon Lund Steffensen <jonlst@gmail.com> - * Copyright (c) 2014-2016, 2025 Mattias Andrée <m@maandree.se> - * - * redshift-ng 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. - * - * redshift-ng 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. - * - * You should have received a copy of the GNU General Public License - * along with redshift-ng. If not, see <http://www.gnu.org/licenses/>. - */ -#include "common.h" - - -volatile sig_atomic_t exiting = 0; -volatile sig_atomic_t disable = 0; -volatile enum signals signals = 0; - - -/** - * Signal handler for exit signals (SIGINT, SIGTERM, SIGQUIT) - * - * @param signo The received signal - */ -static void -sigexit(int signo) -{ - exiting = 1; -#ifdef WINDOWS - signal(signo, &sigexit); -#endif - (void) signo; -} - - -#ifndef WINDOWS - -/** - * Signal handler for disable signal (SIGUSR1) - * - * @param signo The received signal - */ -static void -sigdisable(int signo) -{ - disable = 1; - (void) signo; -} - - -/** - * Signal handler for forceful exiting; installed by - * `install_forceful_exit_signal_handlers` - * - * @param signo The received signal - */ -static void -sigalrm(int signo) -{ - if (exiting || signo == SIGALRM) - exit(0); - exiting = 1; - alarm(1U); -} - - -/** - * Signal handler for SIGUSR2 - * - * @param signo The received signal - * @param info The received signal data - * @param uctx Interrupted stack context - */ -static void -sigipc(int signo, siginfo_t *info, void *uctx) -{ - int set, mask; - sigset_t sigusr2_mask; - - (void) signo; - (void) uctx; - - if (info->si_code != SI_QUEUE) - return; - - switch (info->si_value.sival_int) { - case 1: - case 2: - mask = 3 << 1; - break; - - case 5: - case 6: - mask = 3 << 5; - break; - - case 7: - case 8: - mask = 3 << 7; - break; - - case 11: - case 12: - mask = 3 << 11; - break; - - case 0: - case 3: - case 4: - case 9: - case 10: - mask = 0; - break; - - default: - return; - } - - signals |= set = 1 << info->si_value.sival_int; - signals &= ~mask | set; - - if (set == SIGNAL_ORDER_BARRIER) { - sigemptyset(&sigusr2_mask); - sigaddset(&sigusr2_mask, SIGUSR2); - if (sigprocmask(SIG_BLOCK, &sigusr2_mask, NULL)) - eprintf("sigprocmask:"); - } -} - -#endif - - -void -install_signal_handlers(void) -{ -#ifdef WINDOWS - if (signal(SIGINT, &sigexit) == SIG_ERR) - eprintf("signal SIGINT <function pointer>:"); - if (signal(SIGTERM, &sigexit) == SIG_ERR) - eprintf("signal SIGTERM <function pointer>:"); - -#else - struct sigaction sigact; - sigset_t sigset; - - memset(&sigact, 0, sizeof(sigact)); - sigemptyset(&sigset); - sigact.sa_mask = sigset; - - sigact.sa_flags = SA_NODEFER; - - sigact.sa_handler = &sigexit; - if (sigaction(SIGINT, &sigact, NULL)) - eprintf("sigaction SIGINT &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=SA_NODEFER} NULL:"); - if (sigaction(SIGTERM, &sigact, NULL)) - eprintf("sigaction SIGTERM &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=SA_NODEFER} NULL:"); - if (sigaction(SIGQUIT, &sigact, NULL)) - eprintf("sigaction SIGQUIT &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=SA_NODEFER} NULL:"); - - sigact.sa_handler = &sigdisable; - if (sigaction(SIGUSR1, &sigact, NULL)) - eprintf("sigaction SIGUSR1 &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=SA_NODEFER} NULL:"); - - sigact.sa_flags = 0; - - sigact.sa_handler = SIG_IGN; /* cause child processes (hooks) to be reaped automatically */ - if (sigaction(SIGCHLD, &sigact, NULL)) - eprintf("sigaction SIGCHLD &{.sa_handler=SIG_IGN, .sa_mask={}, .sa_flags=0} NULL:"); - - sigact.sa_flags = SA_SIGINFO; - - sigact.sa_sigaction = &sigipc; - if (sigaction(SIGUSR2, &sigact, NULL)) - eprintf("sigaction SIGUSR2 &{.sa_sigaction=<function pointer>, .sa_mask={}, .sa_flags=SA_SIGINFO} NULL:"); -#endif -} - - -#ifndef WINDOWS -void -install_forceful_exit_signal_handlers(void) -{ - struct sigaction sigact; - sigset_t sigset; - - exiting = 0; - memset(&sigact, 0, sizeof(sigact)); - sigemptyset(&sigset); - sigact.sa_mask = sigset; - sigact.sa_flags = 0; - sigact.sa_handler = &sigalrm; - if (sigaction(SIGINT, &sigact, NULL)) - eprintf("sigaction SIGINT &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); - if (sigaction(SIGTERM, &sigact, NULL)) - eprintf("sigaction SIGTERM &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); - if (sigaction(SIGQUIT, &sigact, NULL)) - eprintf("sigaction SIGQUIT &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); - if (sigaction(SIGALRM, &sigact, NULL)) - eprintf("sigaction SIGALRM &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); -} -#endif |