faraphel/chrony
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util: handle or ignore SIGPIPE signal

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In chronyc handle SIGPIPE similarly to SIGTERM. In chronyd ignore the
signal to avoid crashing when a TCP socket will be needed (e.g. for
NTS-KE) and will be unexpectedly closed from the other side.
This commit is contained in:
Miroslav Lichvar 2018-08-01 12:20:17 +02:00
parent 5bb2bf9361
commit 879d936277
5 changed files with 11 additions and 5 deletions
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2
client.c
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@ -3258,7 +3258,7 @@ main(int argc, char **argv)
hostnames = DEFAULT_COMMAND_SOCKET",127.0.0.1,::1";
}
UTI_SetQuitSignalsHandler(signal_handler);
UTI_SetQuitSignalsHandler(signal_handler, 0);
sockaddrs = get_sockaddrs(hostnames, port);

2
main.c
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@ -586,7 +586,7 @@ int main
/* From now on, it is safe to do finalisation on exit */
initialised = 1;
UTI_SetQuitSignalsHandler(signal_cleanup);
UTI_SetQuitSignalsHandler(signal_cleanup, 1);
CAM_OpenUnixSocket();

2
privops.c
View file

@ -700,7 +700,7 @@ PRV_StartHelper(void)
}
/* ignore signals, the process will exit on OP_QUIT request */
UTI_SetQuitSignalsHandler(SIG_IGN);
UTI_SetQuitSignalsHandler(SIG_IGN, 1);
helper_main(sock_pair[1]);

8
util.c
View file

@ -996,7 +996,7 @@ UTI_FdSetCloexec(int fd)
/* ================================================== */
void
UTI_SetQuitSignalsHandler(void (*handler)(int))
UTI_SetQuitSignalsHandler(void (*handler)(int), int ignore_sigpipe)
{
struct sigaction sa;
@ -1021,6 +1021,12 @@ UTI_SetQuitSignalsHandler(void (*handler)(int))
if (sigaction(SIGHUP, &sa, NULL) < 0)
LOG_FATAL("sigaction(%d) failed", SIGHUP);
#endif
if (ignore_sigpipe)
sa.sa_handler = SIG_IGN;
if (sigaction(SIGPIPE, &sa, NULL) < 0)
LOG_FATAL("sigaction(%d) failed", SIGPIPE);
}
/* ================================================== */

2
util.h
View file

@ -161,7 +161,7 @@ extern Float UTI_FloatHostToNetwork(double x);
/* Set FD_CLOEXEC on descriptor */
extern int UTI_FdSetCloexec(int fd);
extern void UTI_SetQuitSignalsHandler(void (*handler)(int));
extern void UTI_SetQuitSignalsHandler(void (*handler)(int), int ignore_sigpipe);
/* Get directory (as an allocated string) for a path */
extern char *UTI_PathToDir(const char *path);