linux-kernel - [PATCH] make n_hdlc honor O

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <1216302900.3842.4.camel@x2.microgate.com>
Date:	Thu, 17 Jul 2008 08:55:00 -0500
From:	Paul Fulghum <paulkf@...rogate.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] make n_hdlc honor O_NONBLOCK on write

Make n_hdlc line discipline honor the O_NONBLOCK
file flag on write.

Signed-off-by: Paul Fulghum <paulkf@...rogate.com>

--- a/drivers/char/n_hdlc.c	2008-07-17 08:39:15.000000000 -0500
+++ b/drivers/char/n_hdlc.c	2008-07-17 08:43:58.000000000 -0500
@@ -677,6 +677,10 @@ static ssize_t n_hdlc_tty_write(struct t
 	/* Allocate transmit buffer */
 	/* sleep until transmit buffer available */		
 	while (!(tbuf = n_hdlc_buf_get(&n_hdlc->tx_free_buf_list))) {
+		if (file->f_flags & O_NONBLOCK) {
+			error = -EAGAIN;
+			break;
+		}
 		schedule();
 			
 		n_hdlc = tty2n_hdlc (tty);


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/