git: 70bf48a72a01 - stable/13 - daemon: Disable stdio buffering.

From: Dag-Erling Smørgrav <des_at_FreeBSD.org>
Date: Wed, 13 Dec 2023 20:06:25 UTC
The branch stable/13 has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=70bf48a72a0148ab17605f41ff62c0177f1e724a

commit 70bf48a72a0148ab17605f41ff62c0177f1e724a
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2023-10-06 16:44:52 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2023-12-13 16:21:13 +0000

    daemon: Disable stdio buffering.
    
    The daemon utility already does its own buffering and retransmits its
    child's output line by line.  There's no need for stdio to add its own
    buffering on top of this.
    
    MFC after:      1 week
    Sponsored by:   Modirum MDPay
    Reviewed by:    allanjude
    Differential Revision:  https://reviews.freebsd.org/D42111
    
    (cherry picked from commit cec8e6ba64ccab7fb0d9fa531ebad9228233334d)
---
 usr.sbin/daemon/daemon.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/usr.sbin/daemon/daemon.c b/usr.sbin/daemon/daemon.c
index dfbb609ce10d..65e6bb7ca190 100644
--- a/usr.sbin/daemon/daemon.c
+++ b/usr.sbin/daemon/daemon.c
@@ -420,6 +420,7 @@ daemon_eventloop(struct daemon_state *state)
 	close(state->pipe_fd[1]);
 	state->pipe_fd[1] = -1;
 	setproctitle("%s[%d]", state->title, (int)state->pid);
+	setbuf(stdout, NULL);
 
 	while (state->mode != MODE_NOCHILD) {
 		ret = kevent(kq, NULL, 0, &event, 1, NULL);