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Convert vn.c into a module (loadable and static).

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This commit is contained in:
Peter Wemm 1999-01-21 17:17:02 +00:00
parent 334fab0d48
commit b453f58fcc
1 changed files with 54 additions and 46 deletions
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100
sys/dev/vn/vn.c
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@ -38,7 +38,7 @@
* from: Utah Hdr: vn.c 1.13 94/04/02
*
* from: @(#)vn.c 8.6 (Berkeley) 4/1/94
* $Id: vn.c,v 1.70 1998/09/12 18:46:06 sos Exp $
* $Id: vn.c,v 1.71 1998/09/14 19:56:38 sos Exp $
*/
/*
@ -84,6 +84,7 @@
#include <sys/diskslice.h>
#include <sys/stat.h>
#include <sys/conf.h>
#include <sys/module.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /*DEVFS*/
@ -144,8 +145,8 @@ static u_long vn_options;
static void vniodone (struct buf *bp);
static int vnsetcred (struct vn_softc *vn, struct ucred *cred);
static void vnshutdown (int, void *);
static void vnclear (struct vn_softc *vn);
static int vn_modevent (module_t, int, void *);
static int
vnclose(dev_t dev, int flags, int mode, struct proc *p)
@ -593,16 +594,6 @@ vnsetcred(struct vn_softc *vn, struct ucred *cred)
return (error);
}
void
vnshutdown(int howto, void *ignored)
{
int i;
for (i = 0; i < NVN; i++)
if (vn_softc[i] && vn_softc[i]->sc_flags & VNF_INITED)
vnclear(vn_softc[i]);
}
void
vnclear(struct vn_softc *vn)
{
@ -640,45 +631,62 @@ vndump(dev_t dev)
return (ENODEV);
}
static vn_devsw_installed = 0;
static void
vn_drvinit(void *unused)
static int
vn_modevent(module_t mod, int type, void *data)
{
#ifdef DEVFS
int unit;
#endif
if(!vn_devsw_installed ) {
if (at_shutdown(&vnshutdown, NULL, SHUTDOWN_POST_SYNC)) {
printf("vn: could not install shutdown hook\n");
return;
}
cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &vn_cdevsw);
vn_devsw_installed = 1;
}
#ifdef DEVFS
for (unit = 0; unit < NVN; unit++) {
struct vn_softc *vn;
struct vn_softc *vn;
vn = malloc(sizeof *vn, M_DEVBUF, M_NOWAIT);
if (!vn)
return;
bzero(vn, sizeof *vn);
vn_softc[unit] = vn;
vn->r_devfs_token = devfs_add_devswf(&vn_cdevsw,
dkmakeminor(unit, 0, 0),
DV_CHR, UID_ROOT,
GID_OPERATOR, 0640,
"rvn%d", unit);
vn->devfs_token = devfs_add_devswf(&vn_cdevsw,
dkmakeminor(unit, 0, 0),
DV_BLK, UID_ROOT,
GID_OPERATOR, 0640,
"vn%d", unit);
}
switch (type) {
case MOD_LOAD:
#ifdef DEVFS
for (unit = 0; unit < NVN; unit++) {
vn = malloc(sizeof *vn, M_DEVBUF, M_WAITOK);
if (!vn)
continue; /* "oops" */
bzero(vn, sizeof *vn);
vn_softc[unit] = vn;
vn->r_devfs_token = devfs_add_devswf(&vn_cdevsw,
dkmakeminor(unit, 0, 0),
DV_CHR, UID_ROOT,
GID_OPERATOR, 0640,
"rvn%d", unit);
vn->devfs_token = devfs_add_devswf(&vn_cdevsw,
dkmakeminor(unit, 0, 0),
DV_BLK, UID_ROOT,
GID_OPERATOR, 0640,
"vn%d", unit);
}
#endif
break;
case MOD_UNLOAD:
#ifdef DEVFS
for (unit = 0; unit < NVN; unit++) {
vn = vn_softc[unit];
if (vn->r_devfs_token) {
devfs_remove_dev(vn->r_devfs_token);
vn->r_devfs_token = 0;
}
if (vn->devfs_token) {
devfs_remove_dev(vn->devfs_token);
vn->devfs_token = 0;
}
}
#endif
/* fall through */
case MOD_SHUTDOWN:
for (unit = 0; unit < NVN; unit++)
if (vn_softc[unit] &&
vn_softc[unit]->sc_flags & VNF_INITED)
vnclear(vn_softc[unit]);
break;
default:
break;
}
return 0;
}
SYSINIT(vndev, SI_SUB_DRIVERS, SI_ORDER_ANY, vn_drvinit, NULL)
BDEV_MODULE(vn, BDEV_MAJOR, CDEV_MAJOR, vn_cdevsw, vn_modevent, 0);
#endif