From 8c780c8d9a2997c3bb4f2f77173b0af33cefeb75 Mon Sep 17 00:00:00 2001
From: shafeeq <shafeeq@FreeBSD.org>
Date: Tue, 5 Jun 2001 19:45:16 +0000
Subject: Now works again and as a module and with devfs. Used the bpf & tun
 drivers as examples as to what is necessary for devfs.

---
 sys/fs/coda/cnode.h      |  1 +
 sys/fs/coda/coda_fbsd.c  | 52 +++++++++++++++++++++++++++++++++++++++++++++++-
 sys/fs/coda/coda_vnops.c | 29 +++++++++++++++++++--------
 3 files changed, 73 insertions(+), 9 deletions(-)

(limited to 'sys/fs')

diff --git a/sys/fs/coda/cnode.h b/sys/fs/coda/cnode.h
index 75d29ac..c1f8391 100644
--- a/sys/fs/coda/cnode.h
+++ b/sys/fs/coda/cnode.h
@@ -153,6 +153,7 @@ struct coda_mntinfo {
     struct vnode	*mi_rootvp;
     struct mount	*mi_vfsp;
     struct vcomm	 mi_vcomm;
+    dev_t                dev;
 };
 extern struct coda_mntinfo coda_mnttbl[]; /* indexed by minor device number */
 
diff --git a/sys/fs/coda/coda_fbsd.c b/sys/fs/coda/coda_fbsd.c
index 629ead4..438260c 100644
--- a/sys/fs/coda/coda_fbsd.c
+++ b/sys/fs/coda/coda_fbsd.c
@@ -90,7 +90,6 @@ codadev_modevent(module_t mod, int type, void *data)
 
 	switch (type) {
 	case MOD_LOAD:
-		cdevsw_add(&codadevsw);
 		break;
 	case MOD_UNLOAD:
 		break;
@@ -173,3 +172,54 @@ printf("error = %d\n", error);
   }
 #endif
 }
+
+
+/* for DEVFS, using bpf & tun drivers as examples*/
+static void coda_fbsd_drvinit __P((void *unused));
+static void coda_fbsd_drvuninit __P((void *unused));
+static void coda_fbsd_clone __P((void *arg, char *name, int namelen, dev_t *dev));
+
+static void coda_fbsd_clone(arg, name, namelen, dev)
+    void *arg;
+    char *name;
+    int namelen;
+    dev_t *dev;
+{
+    int u;
+
+    if (*dev != NODEV)
+	return;
+    if (dev_stdclone(name,NULL,"cfs",&u) != 1)
+	return;
+
+    *dev = make_dev(&codadevsw,unit2minor(u),UID_ROOT,GID_WHEEL,0600,"cfs%d",u);
+    coda_mnttbl[unit2minor(u)].dev = *dev;
+  
+}
+
+static void coda_fbsd_drvinit(unused)
+    void *unused;
+{
+    int i;
+
+    EVENTHANDLER_REGISTER(dev_clone,coda_fbsd_clone,0,1000);
+    cdevsw_add(&codadevsw);
+    for(i=0;i<NVCODA;i++)
+	coda_mnttbl[i].dev = NULL; 
+}
+
+static void coda_fbsd_drvuninit(unused)
+    void *unused;
+{
+    int i;
+
+    EVENTHANDLER_DEREGISTER(dev_clone,NULL);
+    for(i=0;i<NVCODA;i++)
+	if(coda_mnttbl[i].dev)
+	    destroy_dev(coda_mnttbl[i].dev);
+    cdevsw_remove(&codadevsw);
+}
+
+SYSINIT(coda_fbsd_dev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+VC_DEV_NO,coda_fbsd_drvinit,NULL);
+
+SYSUNINIT(coda_fbsd_dev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+VC_DEV_NO,coda_fbsd_drvuninit,NULL);
diff --git a/sys/fs/coda/coda_vnops.c b/sys/fs/coda/coda_vnops.c
index 5f93984..cde13c3 100644
--- a/sys/fs/coda/coda_vnops.c
+++ b/sys/fs/coda/coda_vnops.c
@@ -142,8 +142,8 @@ struct vnodeopv_entry_desc coda_vnodeop_entries[] = {
     { &vop_advlock_desc, coda_vop_nop },	/* advlock */
     { &vop_lease_desc, coda_vop_nop },		/* lease */
     { &vop_poll_desc, (vop_t *) vop_stdpoll },
-    { &vop_getpages_desc, coda_fbsd_getpages },	/* pager intf.*/
-    { &vop_putpages_desc, vop_stdputpages },	/* pager intf.*/
+    { &vop_getpages_desc, (vop_t*)vop_stdgetpages },	/* pager intf.*/
+    { &vop_putpages_desc, (vop_t*)vop_stdputpages },	/* pager intf.*/
 
 #if	0
 
@@ -159,6 +159,11 @@ struct vnodeopv_entry_desc coda_vnodeop_entries[] = {
     { &vop_cachedlookup_desc,	(vop_t *) ufs_lookup },
     { &vop_whiteout_desc,	(vop_t *) ufs_whiteout },
 #endif
+
+    { &vop_createvobject_desc,	(vop_t *) vop_stdcreatevobject },
+    { &vop_destroyvobject_desc,	(vop_t *) vop_stddestroyvobject },
+    { &vop_getvobject_desc,     (vop_t *) vop_stdgetvobject },	
+    { &vop_getwritemount_desc,	(vop_t *) vop_stdgetwritemount },
     { (struct vnodeop_desc*)NULL, (int(*)(void *))NULL }
 };
 
@@ -403,9 +408,11 @@ coda_rdwr(vp, uiop, rw, ioflag, cred, p)
 /* locals */
     struct cnode *cp = VTOC(vp);
     struct vnode *cfvp = cp->c_ovp;
+    struct proc *lp = p;
     int igot_internally = 0;
     int opened_internally = 0;
     int error = 0;
+    int iscore = 0;
 
     MARK_ENTRY(CODA_RDWR_STATS);
 
@@ -432,9 +439,15 @@ coda_rdwr(vp, uiop, rw, ioflag, cred, p)
 	 * venus won't have the correct size of the core when
 	 * it's completely written.
 	 */
-	PROC_LOCK(p);
-	if (cp->c_inode != 0 && !(p && (p->p_acflag & ACORE))) { 
+	if (p) {
+	    PROC_LOCK(p);
+	    iscore = (p->p_acflag & ACORE);
 	    PROC_UNLOCK(p);
+	}
+	else
+	    lp = curproc; 
+
+	if (cp->c_inode != 0 && !iscore) {
 	    igot_internally = 1;
 	    error = coda_grab_vnode(cp->c_device, cp->c_inode, &cfvp);
 	    if (error) {
@@ -442,13 +455,12 @@ coda_rdwr(vp, uiop, rw, ioflag, cred, p)
 		return(error);
 	    }
 	    /* 
-	     * We get the vnode back locked in both Mach and
+	     * We get the vnode back locked by curproc in both Mach and
 	     * NetBSD.  Needs unlocked 
 	     */
-	    VOP_UNLOCK(cfvp, 0, p);
+	    VOP_UNLOCK(cfvp, 0, lp);
 	}
 	else {
-	    PROC_UNLOCK(p);
 	    opened_internally = 1;
 	    MARK_INT_GEN(CODA_OPEN_STATS);
 	    error = VOP_OPEN(vp, (rw == UIO_READ ? FREAD : FWRITE), 
@@ -478,7 +490,6 @@ printf("coda_rdwr: Internally Opening %p\n", vp);
 			      cp->c_fid.Volume, cp->c_fid.Vnode, 
 			      cp->c_fid.Unique, CTOV(cp)->v_usecount)); )
 
-
     if (rw == UIO_READ) {
 	error = VOP_READ(cfvp, uiop, ioflag, cred);
     } else {
@@ -510,6 +521,8 @@ printf("coda_rdwr: Internally Opening %p\n", vp);
     return(error);
 }
 
+
+
 int
 coda_ioctl(v)
     void *v;
-- 
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