BUG/MEDIUM: log: don't mark log FDs as non-blocking on terminals

With the new ability to log to a terminal, it's convenient to be able
to use "log stdout" in a config file, except that it now results in
setting the terminal to non-blocking mode, breaking every utility
relying on stdin afterwards. Since the only reason for logging to a
terminal is to debug, do not set the FD to non-blocking mode when it's
a terminal.

This fix must be backported to 1.9.
This commit is contained in:
Willy Tarreau 2019-01-02 20:09:33 +01:00
parent 4afdd13842
commit b1d7b700bb

View File

@ -1378,8 +1378,11 @@ void __send_log(struct proxy *p, int level, char *message, size_t size, char *sd
/* the socket's address is a file descriptor */
plogfd = (int *)&((struct sockaddr_in *)&logsrv->addr)->sin_addr.s_addr;
if (unlikely(!((struct sockaddr_in *)&logsrv->addr)->sin_port)) {
/* FD not yet initialized to non-blocking mode */
fcntl(*plogfd, F_SETFL, O_NONBLOCK);
/* FD not yet initialized to non-blocking mode.
* DON'T DO IT ON A TERMINAL!
*/
if (!isatty(*plogfd))
fcntl(*plogfd, F_SETFL, O_NONBLOCK);
((struct sockaddr_in *)&logsrv->addr)->sin_port = 1;
}
}