2 * Copyright (C) 2006 John Birrell <jb@freebsd.org>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice(s), this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified other than the possible
11 * addition of one or more copyright notices.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice(s), this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
33 dtrace_clone(void *arg, struct ucred *cred, char *name, int namelen, struct cdev **dev)
43 if (len != 6 && len != 13)
46 if (bcmp(name,"dtrace",6) != 0)
49 if (len == 13 && bcmp(name,"dtrace/dtrace",13) != 0)
52 /* Clone the device to the new minor number. */
53 if (clone_create(&dtrace_clones, &dtrace_cdevsw, &u, dev, 0) != 0)
54 /* Create the /dev/dtrace/dtraceNN entry. */
55 *dev = make_dev_cred(&dtrace_cdevsw, u, cred,
56 UID_ROOT, GID_WHEEL, 0600, "dtrace/dtrace%d", u);
59 (*dev)->si_flags |= SI_CHEAPCLONE;