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misc: life_mngr: prevent log flooding after SOS socket is closed

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After the SOS socket is closed, read() returns instantly with a return
value of 0. This causes life_mngr to flood the log file with the
following messages:

    received msg []
    received msg []
    received msg []
    ...

Exit the program directly now if this is detected.

Tracked-On: #5429
Signed-off-by: Peter Fang <peter.fang@intel.com>
This commit is contained in:
Peter Fang 2020-11-23 02:34:58 -08:00 committed by wenlingz
parent 07b8466b15
commit 13348793b5
1 changed files with 7 additions and 5 deletions
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12
misc/life_mngr/life_mngr.c
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@ -183,11 +183,13 @@ void *sos_socket_thread(void *arg)
/* Here assume the socket communication is reliable, no need to try */
num = read(connect_fd, buf, sizeof(buf));
if (num == -1) {
LOG_PRINTF("read error on a socket(fd = 0x%x)\n", connect_fd);
close(connect_fd);
close(listen_fd);
exit(1);
break;
} else if (num == 0) {
LOG_PRINTF("socket(fd = 0x%x) closed\n", connect_fd);
break;
}
LOG_PRINTF("received msg [%s]\r\n", buf);
@ -222,8 +224,8 @@ void *listener_fn_to_sos(void *arg)
/* UOS-server wait for message from SOS */
do {
memset(buf, 0, BUFF_SIZE);
ret = receive_message(tty_dev_fd, buf, BUFF_SIZE);
memset(buf, 0, sizeof(buf));
ret = receive_message(tty_dev_fd, buf, sizeof(buf));
if (ret > 0) {
LOG_PRINTF("receive buf :%s ret=0x%x shutdown_state=0x%x\r\n", buf, ret, shutdown_state);
}