Autogenerate namei.h from namei.src to get duplicate values for some
less-than-optimally namespaced macros (e.g. LOOKUP -> NAMEI_LOOKUP).
This commit is contained in:
pooka
parent
e59f9f3e20
commit
a768213636
@ -1,4 +1,6 @@
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# $NetBSD: Makefile,v 1.95 2007/08/04 11:03:03 ad Exp $
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# $NetBSD: Makefile,v 1.96 2007/08/15 14:08:11 pooka Exp $
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.include <bsd.sys.mk>
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INCSDIR= /usr/include/sys
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@ -51,4 +53,7 @@ INCSYMLINKS=\
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INCSYMLINKS+= ../soundcard.h ${INCSDIR}/soundcard.h
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namei: namei.src gennameih.awk
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${AWK} -f gennameih.awk < namei.src > namei.h
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.include <bsd.kinc.mk>
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82
sys/sys/gennameih.awk
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82
sys/sys/gennameih.awk
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@ -0,0 +1,82 @@
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#!/usr/bin/awk -F
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#
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# $NetBSD: gennameih.awk,v 1.1 2007/08/15 14:08:11 pooka Exp $
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#
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# Copyright (c) 2007 The NetBSD Foundation, Inc.
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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, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, 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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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the NetBSD
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# Foundation, Inc. and its contributors.
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# 4. Neither the name of The NetBSD Foundation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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function getrcsid(idstr) {
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sub("^[^$]*\\$", "", idstr);
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sub("\\$.*", "", idstr);
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return idstr;
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}
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NR == 1 {
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printf "/*\t\$NetBSD\$\t*/\n\n"
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myvers="$NetBSD: gennameih.awk,v 1.1 2007/08/15 14:08:11 pooka Exp $"
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print "/*"
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print " * WARNING: GENERATED FILE. DO NOT EDIT"
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print " * (edit namei.src and run make namei)"
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printf " * by: %s\n", getrcsid(myvers);
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printf " * from: %s\n", getrcsid($0);
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print " */"
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next
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}
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/^NAMEIFL/ {
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sub("NAMEIFL", "#define", $0);
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print $0;
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sub("^", "NAMEI_", $2)
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nameifl[i++] = "#define " $2 "\t" $3;
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next
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}
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{
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print $0
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}
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END {
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printf "\n/* Definitions match above, but with NAMEI_ prefix */\n"
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# print flags in the same order
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for (j = 0; j < i; j++) {
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print nameifl[j]
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}
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printf "\n#endif /* !_SYS_NAMEI_H_ */\n"
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}
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224
sys/sys/namei.src
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224
sys/sys/namei.src
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@ -0,0 +1,224 @@
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/* $NetBSD: namei.src,v 1.1 2007/08/15 14:08:11 pooka Exp $ */
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/*
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* Copyright (c) 1985, 1989, 1991, 1993
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* The Regents of the University of California. 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, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER 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
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* SUCH DAMAGE.
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*
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* @(#)namei.h 8.5 (Berkeley) 8/20/94
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*/
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#ifndef _SYS_NAMEI_H_
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#define _SYS_NAMEI_H_
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#include <sys/queue.h>
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#ifdef _KERNEL
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/*
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* Encapsulation of namei parameters.
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*/
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struct nameidata {
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/*
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* Arguments to namei/lookup.
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*/
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const char *ni_dirp; /* pathname pointer */
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enum uio_seg ni_segflg; /* location of pathname */
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/*
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* Arguments to lookup.
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*/
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struct vnode *ni_startdir; /* starting directory */
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struct vnode *ni_rootdir; /* logical root directory */
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struct vnode *ni_erootdir; /* emulation root directory */
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/*
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* Results: returned from/manipulated by lookup
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*/
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struct vnode *ni_vp; /* vnode of result */
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struct vnode *ni_dvp; /* vnode of intermediate directory */
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/*
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* Shared between namei and lookup/commit routines.
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*/
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size_t ni_pathlen; /* remaining chars in path */
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const char *ni_next; /* next location in pathname */
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u_long ni_loopcnt; /* count of symlinks encountered */
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/*
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* Lookup parameters: this structure describes the subset of
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* information from the nameidata structure that is passed
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* through the VOP interface.
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*/
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struct componentname {
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/*
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* Arguments to lookup.
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*/
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u_long cn_nameiop; /* namei operation */
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u_long cn_flags; /* flags to namei */
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struct lwp *cn_lwp; /* lwp requesting lookup */
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kauth_cred_t cn_cred; /* credentials */
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/*
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* Shared between lookup and commit routines.
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*/
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char *cn_pnbuf; /* pathname buffer */
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const char *cn_nameptr; /* pointer to looked up name */
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long cn_namelen; /* length of looked up component */
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u_long cn_hash; /* hash value of looked up name */
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long cn_consume; /* chars to consume in lookup() */
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} ni_cnd;
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};
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/*
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* namei operations
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*/
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NAMEIFL LOOKUP 0 /* perform name lookup only */
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NAMEIFL CREATE 1 /* setup for file creation */
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NAMEIFL DELETE 2 /* setup for file deletion */
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NAMEIFL RENAME 3 /* setup for file renaming */
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NAMEIFL OPMASK 3 /* mask for operation */
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/*
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* namei operational modifier flags, stored in ni_cnd.cn_flags
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*/
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NAMEIFL LOCKLEAF 0x0004 /* lock inode on return */
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NAMEIFL LOCKPARENT 0x0008 /* want parent vnode returned locked */
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NAMEIFL NOCACHE 0x0020 /* name must not be left in cache */
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NAMEIFL FOLLOW 0x0040 /* follow symbolic links */
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NAMEIFL NOFOLLOW 0x0000 /* do not follow symbolic links (pseudo) */
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NAMEIFL TRYEMULROOT 0x0010 /* try relative to emulation root first */
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NAMEIFL EMULROOTSET 0x0080 /* emulation root already in ni_erootdir */
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NAMEIFL MODMASK 0x00fc /* mask of operational modifiers */
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/*
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* Namei parameter descriptors.
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*
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* SAVENAME may be set by either the callers of namei or by VOP_LOOKUP.
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* If the caller of namei sets the flag (for example execve wants to
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* know the name of the program that is being executed), then it must
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* free the buffer. If VOP_LOOKUP sets the flag, then the buffer must
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* be freed by either the commit routine or the VOP_ABORT routine.
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* SAVESTART is set only by the callers of namei. It implies SAVENAME
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* plus the addition of saving the parent directory that contains the
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* name in ni_startdir. It allows repeated calls to lookup for the
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* name being sought. The caller is responsible for releasing the
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* buffer and for vrele'ing ni_startdir.
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*/
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NAMEIFL NOCROSSMOUNT 0x0000100 /* do not cross mount points */
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NAMEIFL RDONLY 0x0000200 /* lookup with read-only semantics */
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NAMEIFL HASBUF 0x0000400 /* has allocated pathname buffer */
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NAMEIFL SAVENAME 0x0000800 /* save pathname buffer */
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NAMEIFL SAVESTART 0x0001000 /* save starting directory */
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NAMEIFL ISDOTDOT 0x0002000 /* current component name is .. */
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NAMEIFL MAKEENTRY 0x0004000 /* entry is to be added to name cache */
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NAMEIFL ISLASTCN 0x0008000 /* this is last component of pathname */
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NAMEIFL ISSYMLINK 0x0010000 /* symlink needs interpretation */
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NAMEIFL ISWHITEOUT 0x0020000 /* found whiteout */
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NAMEIFL DOWHITEOUT 0x0040000 /* do whiteouts */
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NAMEIFL REQUIREDIR 0x0080000 /* must be a directory */
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NAMEIFL CREATEDIR 0x0200000 /* trailing slashes are ok */
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NAMEIFL PARAMASK 0x03fff00 /* mask of parameter descriptors */
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/*
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* Initialization of an nameidata structure.
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*/
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#define NDINIT(ndp, op, flags, segflg, namep, l) { \
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(ndp)->ni_cnd.cn_nameiop = op; \
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(ndp)->ni_cnd.cn_flags = flags; \
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(ndp)->ni_segflg = segflg; \
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(ndp)->ni_dirp = namep; \
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(ndp)->ni_cnd.cn_lwp = l; \
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(ndp)->ni_cnd.cn_cred = l->l_cred; \
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}
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#endif
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/*
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* This structure describes the elements in the cache of recent
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* names looked up by namei. NCHNAMLEN is sized to make structure
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* size a power of two to optimize malloc's. Minimum reasonable
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* size is 15.
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*/
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#define NCHNAMLEN 31 /* maximum name segment length we bother with */
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struct namecache {
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LIST_ENTRY(namecache) nc_hash; /* hash chain */
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TAILQ_ENTRY(namecache) nc_lru; /* LRU chain */
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LIST_ENTRY(namecache) nc_vhash; /* directory hash chain */
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LIST_ENTRY(namecache) nc_dvlist;
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struct vnode *nc_dvp; /* vnode of parent of name */
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LIST_ENTRY(namecache) nc_vlist;
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struct vnode *nc_vp; /* vnode the name refers to */
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int nc_flags; /* copy of componentname's ISWHITEOUT */
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char nc_nlen; /* length of name */
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char nc_name[NCHNAMLEN]; /* segment name */
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};
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#ifdef _KERNEL
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#include <sys/mallocvar.h>
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#include <sys/pool.h>
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struct mount;
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extern struct pool pnbuf_pool; /* pathname buffer pool */
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extern struct pool_cache pnbuf_cache; /* pathname buffer cache */
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#define PNBUF_GET() pool_cache_get(&pnbuf_cache, PR_WAITOK)
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#define PNBUF_PUT(pnb) pool_cache_put(&pnbuf_cache, (pnb))
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int namei(struct nameidata *);
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uint32_t namei_hash(const char *, const char **);
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int lookup(struct nameidata *);
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int relookup(struct vnode *, struct vnode **, struct componentname *);
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void cache_purge1(struct vnode *, const struct componentname *, int);
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#define PURGE_PARENTS 1
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#define PURGE_CHILDREN 2
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#define cache_purge(vp) cache_purge1((vp), NULL, PURGE_PARENTS|PURGE_CHILDREN)
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int cache_lookup(struct vnode *, struct vnode **, struct componentname *);
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int cache_lookup_raw(struct vnode *, struct vnode **,
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struct componentname *);
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int cache_revlookup(struct vnode *, struct vnode **, char **, char *);
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void cache_enter(struct vnode *, struct vnode *, struct componentname *);
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void nchinit(void);
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void nchreinit(void);
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void cache_purgevfs(struct mount *);
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void namecache_print(struct vnode *, void (*)(const char *, ...));
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#endif
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/*
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* Stats on usefulness of namei caches.
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* XXX: should be 64-bit counters.
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*/
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struct nchstats {
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long ncs_goodhits; /* hits that we can really use */
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long ncs_neghits; /* negative hits that we can use */
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long ncs_badhits; /* hits we must drop */
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long ncs_falsehits; /* hits with id mismatch */
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long ncs_miss; /* misses */
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long ncs_long; /* long names that ignore cache */
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long ncs_pass2; /* names found with passes == 2 */
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long ncs_2passes; /* number of times we attempt it */
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long ncs_revhits; /* reverse-cache hits */
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long ncs_revmiss; /* reverse-cache misses */
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};
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#ifdef _KERNEL
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extern struct nchstats nchstats;
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#endif
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/* #endif !_SYS_NAMEI_H_ (generated by gennameih.awk) */
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