projects
/
unix-history
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
tags
|
clone url
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
parameterize max proc id
[unix-history]
/
usr
/
src
/
sys
/
kern
/
tty_tty.c
diff --git
a/usr/src/sys/kern/tty_tty.c
b/usr/src/sys/kern/tty_tty.c
index
1f837a9
..
7fb68d7
100644
(file)
--- a/
usr/src/sys/kern/tty_tty.c
+++ b/
usr/src/sys/kern/tty_tty.c
@@
-3,7
+3,7
@@
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
- * @(#)tty_tty.c 7.
7
(Berkeley) %G%
+ * @(#)tty_tty.c 7.
9
(Berkeley) %G%
*/
/*
*/
/*
@@
-32,8
+32,11
@@
syopen(dev, flag)
if (ttyvp == NULL)
return (ENXIO);
if (ttyvp == NULL)
return (ENXIO);
- if (error = VOP_ACCESS(ttyvp,
- (flag&FREAD ? VREAD : 0) | (flag&FWRITE ? VWRITE : 0), u.u_cred))
+ VOP_LOCK(ttyvp);
+ error = VOP_ACCESS(ttyvp,
+ (flag&FREAD ? VREAD : 0) | (flag&FWRITE ? VWRITE : 0), u.u_cred);
+ VOP_UNLOCK(ttyvp);
+ if (error)
return (error);
return (VOP_OPEN(ttyvp, flag, NOCRED));
}
return (error);
return (VOP_OPEN(ttyvp, flag, NOCRED));
}
@@
-99,6
+102,6
@@
syselect(dev, flag)
struct vnode *ttyvp = cttyvp(u.u_procp);
if (ttyvp == NULL)
struct vnode *ttyvp = cttyvp(u.u_procp);
if (ttyvp == NULL)
- return (
ENXIO);
+ return (
1); /* try operation to get EOF/failure */
return (VOP_SELECT(ttyvp, flag, FREAD|FWRITE, NOCRED));
}
return (VOP_SELECT(ttyvp, flag, FREAD|FWRITE, NOCRED));
}