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Diffstat (limited to '')
| -rw-r--r-- | src/signal.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/signal.c b/src/signal.c index b5c27ec..d721f67 100644 --- a/src/signal.c +++ b/src/signal.c @@ -6,12 +6,55 @@ */ #include "signal.h" +#include "compiler.h" #include "log.h" #include <signal.h> +#include <string.h> volatile sig_atomic_t global_stop_flag = 0; +static void set_global_stop_flag(UNUSED int signum) +{ + global_stop_flag = 1; +} + +static int my_sigaction(int signo, const struct sigaction *act) +{ + int ret = 0; + + ret = sigaction(signo, act, NULL); + if (ret < 0) { + log_errno("sigaction"); + return ret; + } + + return ret; +} + +int signal_install_global_handler() +{ + int ret = 0; + + struct sigaction sa; + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = set_global_stop_flag; + + /* Don't care about proper cleanup here; we exit the program if this + * fails anyway. */ + ret = my_sigaction(SIGINT, &sa); + if (ret < 0) + return ret; + ret = my_sigaction(SIGQUIT, &sa); + if (ret < 0) + return ret; + ret = my_sigaction(SIGTERM, &sa); + if (ret < 0) + return ret; + + return ret; +} + int signal_set(const sigset_t *new, sigset_t *old) { int ret = 0; |