diff options
| author | Tobias Girstmair <t-osmocom@girst.at> | 2022-11-18 16:20:14 +0100 |
|---|---|---|
| committer | Steve Markgraf <steve@steve-m.de> | 2022-12-17 21:18:49 +0100 |
| commit | 142325a93c6ad70f851f43434acfdf75e12dfe03 (patch) | |
| tree | d5a4dc487a3fe89999205bcb36875133c17cc729 /src | |
| parent | 5e73f90f1d85d8db2e583f3dbf1cff052d71d59b (diff) | |
Fix signal handler from getting stuck in an endless loop
The signal handler for SIGINT/TERM/QUIT and, importantly, SIGPIPE tries
to write an informational message to stderr. When however stderr is
redirected to a closed pipe, this will cause (another) SIGPIPE, and in
turn the signal handler will get called again, and again and again.
Since we intend to exit rtl_fm anyways, we can just ignore this signal.
Diffstat (limited to 'src')
| -rw-r--r-- | src/rtl_adsb.c | 1 | ||||
| -rw-r--r-- | src/rtl_fm.c | 1 | ||||
| -rw-r--r-- | src/rtl_power.c | 1 | ||||
| -rw-r--r-- | src/rtl_sdr.c | 1 | ||||
| -rw-r--r-- | src/rtl_tcp.c | 1 | ||||
| -rw-r--r-- | src/rtl_test.c | 1 |
6 files changed, 6 insertions, 0 deletions
diff --git a/src/rtl_adsb.c b/src/rtl_adsb.c index 7aea8dd..8119ac8 100644 --- a/src/rtl_adsb.c +++ b/src/rtl_adsb.c @@ -123,6 +123,7 @@ sighandler(int signum) #else static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); fprintf(stderr, "Signal caught, exiting!\n"); do_exit = 1; rtlsdr_cancel_async(dev); diff --git a/src/rtl_fm.c b/src/rtl_fm.c index 7c84332..037793c 100644 --- a/src/rtl_fm.c +++ b/src/rtl_fm.c @@ -246,6 +246,7 @@ sighandler(int signum) #else static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); fprintf(stderr, "Signal caught, exiting!\n"); do_exit = 1; rtlsdr_cancel_async(dongle.dev); diff --git a/src/rtl_power.c b/src/rtl_power.c index 6204de2..df3ceb7 100644 --- a/src/rtl_power.c +++ b/src/rtl_power.c @@ -195,6 +195,7 @@ sighandler(int signum) #else static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); do_exit++; multi_bail(); } diff --git a/src/rtl_sdr.c b/src/rtl_sdr.c index e6537ca..2c93b57 100644 --- a/src/rtl_sdr.c +++ b/src/rtl_sdr.c @@ -74,6 +74,7 @@ sighandler(int signum) #else static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); fprintf(stderr, "Signal caught, exiting!\n"); do_exit = 1; rtlsdr_cancel_async(dev); diff --git a/src/rtl_tcp.c b/src/rtl_tcp.c index 84f5591..8781ba9 100644 --- a/src/rtl_tcp.c +++ b/src/rtl_tcp.c @@ -144,6 +144,7 @@ sighandler(int signum) #else static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); fprintf(stderr, "Signal caught, exiting!\n"); rtlsdr_cancel_async(dev); do_exit = 1; diff --git a/src/rtl_test.c b/src/rtl_test.c index 9b44097..b7f46ea 100644 --- a/src/rtl_test.c +++ b/src/rtl_test.c @@ -115,6 +115,7 @@ sighandler(int signum) #else static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); fprintf(stderr, "Signal caught, exiting!\n"); do_exit = 1; rtlsdr_cancel_async(dev); |