diff options
Diffstat (limited to 'src/libnm-systemd-shared/src/basic/signal-util.c')
| -rw-r--r-- | src/libnm-systemd-shared/src/basic/signal-util.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/libnm-systemd-shared/src/basic/signal-util.c b/src/libnm-systemd-shared/src/basic/signal-util.c index b61c18b2de..7875ca69bb 100644 --- a/src/libnm-systemd-shared/src/basic/signal-util.c +++ b/src/libnm-systemd-shared/src/basic/signal-util.c @@ -5,6 +5,7 @@ #include "errno-util.h" #include "macro.h" +#include "missing_syscall.h" #include "parse-util.h" #include "signal-util.h" #include "stdio-util.h" @@ -282,3 +283,20 @@ int pop_pending_signal_internal(int sig, ...) { return r; /* Returns the signal popped */ } + +void propagate_signal(int sig, siginfo_t *siginfo) { + pid_t p; + + /* To be called from a signal handler. Will raise the same signal again, in our process + in our threads. + * + * Note that we use raw_getpid() instead of getpid_cached(). We might have forked with raw_clone() + * earlier (see PID 1), and hence let's go to the raw syscall here. In particular as this is not + * performance sensitive code. + * + * Note that we use kill() rather than raise() as fallback, for similar reasons. */ + + p = raw_getpid(); + + if (rt_tgsigqueueinfo(p, gettid(), sig, siginfo) < 0) + assert_se(kill(p, sig) >= 0); +} |