system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-10-04 23:50:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add one little hack to allow us to make MAJOR_AUTO be zero:

Browse source 
Let the console driver ask for major 256 and magically change this to
mean zero.
This commit is contained in:
Poul-Henning Kamp 2003-03-09 10:28:05 +00:00
parent e76a843b59
commit 06a8bb906c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112035
2 changed files with 9 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
sys/kern/kern_conf.c
View file

@ -295,6 +295,8 @@ make_dev(struct cdevsw *devsw, int minor, uid_t uid, gid_t gid, int perms, const
devsw->d_maj = i;
reserved_majors[i] = i;
} else {
if (devsw->d_maj == 256) /* XXX: tty_cons.c is magic */
devsw->d_maj = 0;
KASSERT(devsw->d_maj >= 0 && devsw->d_maj < 256,
("Invalid major (%d) in make_dev", devsw->d_maj));
if (reserved_majors[devsw->d_maj] != devsw->d_maj) {

19
sys/kern/tty_cons.c
View file

@ -69,7 +69,6 @@ static d_ioctl_t cnioctl;
static d_poll_t cnpoll;
static d_kqfilter_t cnkqfilter;
#define CDEV_MAJOR 0
static struct cdevsw cn_cdevsw = {
.d_open = cnopen,
.d_close = cnclose,
@ -78,7 +77,12 @@ static struct cdevsw cn_cdevsw = {
.d_ioctl = cnioctl,
.d_poll = cnpoll,
.d_name = "console",
.d_maj = CDEV_MAJOR,
.d_maj = 256,
/*
* XXX: We really want major #0, but zero here means
* XXX: allocate a major number automatically.
* XXX: kern_conf.c knows what to do when it sees 256.
*/
.d_flags = D_TTY,
.d_kqfilter = cnkqfilter,
};
@ -171,6 +175,7 @@ cninit(void)
* Make the best console the preferred console.
*/
cnselect(best_cn);
make_dev(&cn_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "console");
}
void
@ -582,13 +587,3 @@ cndbctl(int on)
if (on)
refcount++;
}
static void
cn_drvinit(void *unused)
{
make_dev(&cn_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600,
"console");
}
SYSINIT(cndev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,cn_drvinit,NULL)