From 4d075b334cd420b14008820fa3bab3ff3dc9f463 Mon Sep 17 00:00:00 2001
From: =?utf8?q?S=C3=B8ren=20Schmidt?= <sos@FreeBSD.org>
Date: Wed, 30 Sep 1998 20:33:46 +0000
Subject: [PATCH] Make devfs update the atime timestamp so that 'w' works when
 using options DEVFS.

---
 sys/miscfs/devfs/devfs_vnops.c | 14 ++++++++++----
 sys/miscfs/devfs/devfsdefs.h   |  3 ++-
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/sys/miscfs/devfs/devfs_vnops.c b/sys/miscfs/devfs/devfs_vnops.c
index a93ad200c27..213a8677c4d 100644
--- a/sys/miscfs/devfs/devfs_vnops.c
+++ b/sys/miscfs/devfs/devfs_vnops.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  * 
- *	$Id: devfs_vnops.c,v 1.59 1998/08/16 01:21:51 bde Exp $
+ *	$Id: devfs_vnops.c,v 1.60 1998/09/04 08:06:56 dfr Exp $
  */
 
 
@@ -443,6 +443,10 @@ DBPRINT(("getattr\n"));
 		TIMEVAL_TO_TIMESPEC(&boottime,&(file_node->mtime));
 		TIMEVAL_TO_TIMESPEC(&boottime,&(file_node->atime));
 	}
+	if (file_node->flags & IN_ACCESS) {
+		nanotime(&file_node->atime);
+		file_node->flags &= ~IN_ACCESS;
+	}
 	vap->va_ctime = file_node->ctime;
 	vap->va_mtime = file_node->mtime;
 	vap->va_atime = file_node->atime;
@@ -1409,7 +1413,7 @@ devfs_read( struct vop_read_args *ap)
 		error = (*dnp->by.Cdev.cdevsw->d_read)
 			(dnp->by.Cdev.dev, uio, ap->a_ioflag);
 		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
-		return (error);
+		break;
 
 	case VBLK:
 		if (uio->uio_offset < 0)
@@ -1452,12 +1456,14 @@ devfs_read( struct vop_read_args *ap)
 			error = uiomove((char *)bp->b_data + on, n, uio);
 			brelse(bp);
 		} while (error == 0 && uio->uio_resid > 0 && n != 0);
-		return (error);
+		break;
 
 	default:
 		panic("devfs_read type");
 	}
-	/* NOTREACHED */
+	if (!(vp->v_mount->mnt_flag & MNT_NOATIME))
+		dnp->flags |= IN_ACCESS;        
+	return (error);
 }
 
 /*
diff --git a/sys/miscfs/devfs/devfsdefs.h b/sys/miscfs/devfs/devfsdefs.h
index 76280dd449a..9144c3dd925 100644
--- a/sys/miscfs/devfs/devfsdefs.h
+++ b/sys/miscfs/devfs/devfsdefs.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  * 
- * $Id: devfsdefs.h,v 1.15 1998/07/04 22:30:22 julian Exp $
+ * $Id: devfsdefs.h,v 1.16 1998/07/05 23:10:22 julian Exp $
  */
 #ifdef DEVFS_DEBUG
 #define DBPRINT(A) printf(A)
@@ -98,6 +98,7 @@ struct	devnode	/* the equivalent of an INODE */
 {
 	u_short type;
 	int	flags;		/* more inode compatible for now *//*XXXkill*/
+#define	IN_ACCESS		0x0001
 	u_short	mode;		/* basically inode compatible (drwxrwxrwx) */
 	u_short	uid;		/* basically inode compatible  */
 	u_short	gid;		/* basically inode compatible  */
-- 
2.45.2