Merge the dev_clone and dev_clone_cred event handlers into a single

event handler, dev_clone, which accepts a credential argument.
Implementors of the event can ignore it if they're not interested,
and most do.  This avoids having multiple event handler types and
fall-back/precedence logic in devfs.

This changes the kernel API for /dev cloning, and may affect third
party packages containg cloning kernel modules.

Requested by:	phk
MFC after:	3 days

1 files changed, 4 insertions, 3 deletions

diff --git a/sys/fs/coda/coda_fbsd.c b/sys/fs/coda/coda_fbsd.c
index ac6ad48..dd379d7 100644
--- a/sys/fs/coda/coda_fbsd.c
+++ b/sys/fs/coda/coda_fbsd.c
@@ -70,8 +70,8 @@ int     vcdebug = 1;
 #define VCDEBUG if (vcdebug) printf
 
 /* for DEVFS, using bpf & tun drivers as examples*/
-static void coda_fbsd_clone(void *arg, char *name, int namelen,
-    struct cdev **dev);
+static void coda_fbsd_clone(void *arg, struct ucred *cred, char *name,
+    int namelen, struct cdev **dev);
 
 static int
 codadev_modevent(module_t mod, int type, void *data)
@@ -105,8 +105,9 @@ static moduledata_t codadev_mod = {
 };
 DECLARE_MODULE(codadev, codadev_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
 
-static void coda_fbsd_clone(arg, name, namelen, dev)
+static void coda_fbsd_clone(arg, cred, name, namelen, dev)
     void *arg;
+    struct ucred *cred;
     char *name;
     int namelen;
     struct cdev **dev;