d56b4cd4ac
dev_ref() in the clone handlers that still use it. - Don't set SI_CHEAPCLONE flag, it's not used anywhere neither in devfs (for anything real) Reviewed by: kib
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*-
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* Copyright (C) 2006 John Birrell <jb@freebsd.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice(s), this list of conditions and the following disclaimer as
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* the first lines of this file unmodified other than the possible
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* addition of one or more copyright notices.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice(s), this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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static void
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dtrace_clone(void *arg, struct ucred *cred, char *name, int namelen, struct cdev **dev)
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{
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int u = -1;
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size_t len;
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if (*dev != NULL)
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return;
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len = strlen(name);
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if (len != 6 && len != 13)
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return;
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if (bcmp(name,"dtrace",6) != 0)
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return;
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if (len == 13 && bcmp(name,"dtrace/dtrace",13) != 0)
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return;
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/* Clone the device to the new minor number. */
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if (clone_create(&dtrace_clones, &dtrace_cdevsw, &u, dev, 0) != 0)
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/* Create the /dev/dtrace/dtraceNN entry. */
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*dev = make_dev_credf(MAKEDEV_REF, &dtrace_cdevsw, u, cred,
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UID_ROOT, GID_WHEEL, 0600, "dtrace/dtrace%d", u);
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}
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