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Force FWRITE on when opening the console, so that the flags passed to

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vn_close match those from vn_open.  This fixes the panic some people
were seeing about "vrele: missed vn_close".
This commit is contained in:
Jonathan Lemon 2001-10-25 00:14:16 +00:00
parent 999ee3ac48
commit 7ce26133ea
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=85448
1 changed files with 5 additions and 2 deletions
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7
sys/kern/tty_cons.c
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@ -43,6 +43,7 @@
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/fcntl.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/namei.h>
@ -112,6 +113,8 @@ static int openflag; /* how /dev/console was opened */
static int cn_is_open;
static dev_t cn_devfsdev; /* represents the device private info */
void cndebug(char *);
CONS_DRIVER(cons, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
SET_DECLARE(cons_set, struct consdev);
@ -365,7 +368,7 @@ cnopen(dev_t dev, int flag, int mode, struct thread *td)
{
struct cn_device *cnd;
openflag = flag;
openflag = flag | FWRITE; /* XXX */
cn_is_open = 1; /* console is logically open */
if (cn_mute)
return (0);
@ -382,7 +385,7 @@ cnclose(dev_t dev, int flag, int mode, struct thread *td)
STAILQ_FOREACH(cnd, &cn_devlist, cnd_next) {
if (cnd->cnd_vp == NULL)
continue;
vn_close(cnd->cnd_vp, mode, td->td_proc->p_ucred, td);
vn_close(cnd->cnd_vp, openflag, td->td_proc->p_ucred, td);
cnd->cnd_vp = NULL;
}
cn_is_open = 0;