* Copyright (c) 1992, 1993, 1994, 1995

#!/bin/sh -
copyright="\
/*
* Copyright (c) 1992, 1993, 1994, 1995
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS \`\`AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
"
SCRIPT_ID='$NetBSD: vnode_if.sh,v 1.77 2022/10/26 23:39:43 riastradh Exp $'

# Script to produce VFS front-end sugar.
#
# usage: vnode_if.sh srcfile
# (where srcfile is currently /sys/kern/vnode_if.src)
#

if [ $# -ne 1 ] ; then
echo 'usage: vnode_if.sh srcfile'
exit 1
fi

# Name and revision of the source file.
src=$1
SRC_ID=`head -1 $src | sed -e 's/.*\$$.*$\$.*/\1/'`

# Names of the created files.
out_c=vnode_if.c
out_rumpc=../rump/librump/rumpvfs/rumpvnode_if.c
out_h=../sys/vnode_if.h
out_rumph=../rump/include/rump/rumpvnode_if.h

# generate VNODE_LOCKDEBUG checks (not fully functional)
lockdebug=1

# Awk program (must support nawk extensions)
# Use "awk" at Berkeley, "nawk" or "gawk" elsewhere.
awk=${AWK:-awk}

# Does this awk have a "toupper" function? (i.e. is it GNU awk)
isgawk=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null`

# If this awk does not define "toupper" then define our own.
if [ "$isgawk" = TRUE ] ; then
# GNU awk provides it.
toupper=
else
# Provide our own toupper()
toupper='
function toupper(str) {
_toupper_cmd = "echo "str" |tr a-z A-Z"
_toupper_cmd | getline _toupper_str;
close(_toupper_cmd);
return _toupper_str;
}'
fi

#
# This is the common part of all awk programs that read $src
# This parses the input for one function into the arrays:
# argdir, argtype, argname, willrele
# and calls "doit()" to generate output for the function.
#
# Input to this parser is pre-processed slightly by sed
# so this awk parser doesn't have to work so hard. The
# changes done by the sed pre-processing step are:
# insert a space between * and pointer name
# replace semicolons with spaces
#
sed_prep='s:\*$[^\*/]$:\* \1:g
s/;/ /'
awk_parser='
# Comment line
/^#/ { next; }
# First line of description
/^vop_/ {
name=$1;
args_name=$1;
argc=0;
have_context=0;
is_context=0;
ncontext=0;
willmake=-1;
fstrans="";
do_pre="";
do_post="";
next;
}
# Last line of description
/^}/ {
doit();
next;
}
# Middle lines of description
{
if ($1 == "VERSION") {
args_name=args_name "_v" $2;
next;
} else if ($1 ~ "^FSTRANS=") {
fstrans = $1;
sub("FSTRANS=", "", fstrans);
next;
} else if ($1 ~ "^PRE=") {
do_pre = $1;
sub("PRE=", "", do_pre);
next;
} else if ($1 ~ "^POST=") {
do_post = $1;
sub("POST=", "", do_post);
next;
}

if ($1 == "CONTEXT") {
# CONTEXT require PRE and POST handlers.
if (do_pre == "" || do_post == "")
next;
is_context=1;
have_context=1;
} else {
if (have_context) {
# CONTEXT members must come at the end of
# the args structure, so everything else
# is ignored.
next;
}
argdir[argc] = $1;
}
i=2;

if (is_context == 0) {
if ($2 == "LOCKED=EXCL") {
lockstate[argc] = "elocked";
i++;
} else if ($2 == "LOCKED=YES") {
lockstate[argc] = "locked";
i++;
} else if ($2 == "LOCKED=NO") {
lockstate[argc] = "unlocked";
i++;
} else
lockstate[argc] = "";

if ($2 == "WILLRELE" ||
$3 == "WILLRELE") {
willrele[argc] = 1;
i++;
} else if ($2 == "WILLPUT" ||
$3 == "WILLPUT") {
willrele[argc] = 3;
i++;
} else
willrele[argc] = 0;

if ($2 == "WILLMAKE") {
willmake=argc;
i++;
}
if (argc == 0 && fstrans == "") {
if (lockstate[0] == "locked" ||
lockstate[0] == "elocked")
fstrans = "NO";
else
fstrans = "YES";
}
}

# XXX: replace non-portable types for rump. We should really
# nuke the types from the kernel, but that is a battle for
# another day.
at = $i;
if (rump) {
if (at == "vm_prot_t")
at = "int";
if (at == "voff_t")
at = "off_t";
if (at == "kauth_cred_t")
at = "struct kauth_cred *"
if (at == "daddr_t")
at = "int64_t"
}
argtype[argc + ncontext] = at;
i++;
while (i < NF) {
argtype[argc + ncontext] = argtype[argc + ncontext]" "$i;
i++;
}
argname[argc + ncontext] = $i;
if (is_context)
ncontext++;
else
argc++;
next;
}
'

# This is put before the copyright on each generated file.
warning="\
/* @NetBSD@ */

/*
* Warning: DO NOT EDIT! This file is automatically generated!
* (Modifications made here may easily be lost!)
*
* Created from the file:
* ${SRC_ID}
* by the script:
* ${SCRIPT_ID}
*/
"

# This is to satisfy McKusick (get rid of evil spaces 8^)
anal_retentive='s:$[^/]\*$ :\1:g'

do_hfile () {
#
# Redirect stdout to the H file.
#
echo "$0: Creating $1" 1>&2
exec > $1
rump=$2

# Begin stuff
if [ -z "${rump}" ]; then
SYS='SYS_'
else
SYS='RUMP_RUMP'
fi
echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g;s/ $//'
echo ""
echo -n "$copyright"
echo ''
echo "#ifndef _${SYS}VNODE_IF_H_"
echo "#define _${SYS}VNODE_IF_H_"
[ -z "${rump}" ] && echo "
extern const struct vnodeop_desc ${rump}vop_default_desc;"
echo

# Body stuff
# This awk program needs toupper() so define it if necessary.
sed -e "$sed_prep" $src | $awk -v rump=${rump} "$toupper"'
function doit() {
name = rump name
# Declare arg struct, descriptor.
if (!rump) {
printf("\n#define %s_DESCOFFSET %d\n",
toupper(name), vop_offset++);
printf("struct %s_args {\n", args_name);
printf("\tconst struct vnodeop_desc * a_desc;\n");
for (i=0; i<argc; i++) {
printf("\t%s a_%s;\n", argtype[i], argname[i]);
}
for (i=0; i<ncontext; i++) {
printf("\t%s ctx_%s;\n", argtype[argc+i], \
argname[argc+i]);
}
printf("};\n");
printf("extern const struct vnodeop_desc %s_desc;\n", name);
}
# Prototype it.
protoarg = sprintf("int %s(", toupper(name));
protolen = length(protoarg);
printf("%s", protoarg);
for (i=0; i<argc; i++) {
protoarg = sprintf("%s", argtype[i]);
if (i < (argc-1)) protoarg = (protoarg ", ");
arglen = length(protoarg);
if ((protolen + arglen) > 77) {
protoarg = ("\n " protoarg);
arglen += 4;
protolen = 0;
}
printf("%s", protoarg);
protolen += arglen;
}
printf(");\n");
}
BEGIN {
vop_offset = 1; # start at 1, to count the 'default' op

printf("struct buf;\n");
if (rump) {
printf("struct flock;\n");
printf("struct knote;\n");
printf("struct vm_page;\n");
printf("struct acl;\n");
printf("\n#include <sys/acl.h>\n");
}
printf("\n#ifndef _KERNEL\n#include <stdbool.h>\n#endif\n");
if (rump)
printf("\n");
}
END {
if (!rump) {
printf("\n#define VNODE_OPS_COUNT\t%d\n", vop_offset);
}
}
'"$awk_parser" | sed -e "$anal_retentive"

# End stuff
echo ''
echo "#endif /* !_${SYS}VNODE_IF_H_ */"
}
do_hfile $out_h ''
do_hfile $out_rumph 'rump_'

do_cfile () {
#
# Redirect stdout to the C file.
#
echo "$0: Creating $1" 1>&2
exec > $1
rump=$2

# Begin stuff
echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g;s/ $//'
echo ""
echo -n "$copyright"
echo "
#include <sys/cdefs.h>
__KERNEL_RCSID(0, \"\$NetBSD\$\");"

if [ -z "${rump}" -a ${lockdebug} -ne 0 ] ; then
echo ''
echo '#ifdef _KERNEL_OPT'
echo '#include "opt_vnode_lockdebug.h"'
echo '#endif /* _KERNEL_OPT */'
fi

echo '
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/buf.h>
#include <sys/fcntl.h>
#include <sys/vnode.h>
#include <sys/lock.h>'
[ -z "${rump}" ] && echo '#include <sys/fstrans.h>'
[ ! -z "${rump}" ] && echo '#include <rump/rumpvnode_if.h>' \
&& echo '#include <rump-sys/kern.h>'

if [ -z "${rump}" ] ; then
echo "
#include <miscfs/deadfs/deadfs.h>

enum fst_op { FST_NO, FST_YES, FST_LAZY, FST_TRY };

static inline int
vop_pre(vnode_t *vp, struct mount **mp, bool *mpsafe, enum fst_op op)
{
int error;

*mpsafe = (vp->v_vflag & VV_MPSAFE);

if (!*mpsafe) {
KERNEL_LOCK(1, curlwp);
}

if (op == FST_YES || op == FST_LAZY || op == FST_TRY) {
for (;;) {
*mp = vp->v_mount;
if (op == FST_TRY) {
error = fstrans_start_nowait(*mp);
if (error) {
if (!*mpsafe) {
KERNEL_UNLOCK_ONE(curlwp);
}
return error;
}
} else if (op == FST_LAZY) {
fstrans_start_lazy(*mp);
} else {
fstrans_start(*mp);
}
if (__predict_true(*mp == vp->v_mount))
break;
fstrans_done(*mp);
}
} else {
*mp = vp->v_mount;
}

return 0;
}

static inline u_quad_t
vop_pre_get_size(struct vnode *vp)
{
mutex_enter(vp->v_interlock);
KASSERT(vp->v_size != VSIZENOTSET);
u_quad_t rv = (u_quad_t)vp->v_size;
mutex_exit(vp->v_interlock);

return rv;
}

/*
* VOP_RMDIR(), VOP_REMOVE(), and VOP_RENAME() need special handling
* because they each drop the caller's references on one or more of
* their arguments. While there must be an open file descriptor in
* associated with a vnode in order for knotes to be attached to it,
* that status could change during the course of the operation. So,
* for the vnode arguments that are WILLRELE or WILLPUT, we check
* pre-op if there are registered knotes, take a hold count if so,
* and post-op release the hold after activating any knotes still
* associated with the vnode.
*/

#define VOP_POST_KNOTE(thisvp, e, n) \\
do { \\
if (__predict_true((e) == 0)) { \\
/* \\
* VN_KNOTE() does the VN_KEVENT_INTEREST() \\
* check for us. \\
*/ \\
VN_KNOTE((thisvp), (n)); \\
} \\
} while (/*CONSTCOND*/0)

#define VOP_POST_KNOTE_HELD(thisvp, e, n) \\
do { \\
/* \\
* We don't perform a VN_KEVENT_INTEREST() check here; it \\
* was already performed when we did the pre-op work that \\
* caused the vnode to be held in the first place. \\
*/ \\
mutex_enter((thisvp)->v_interlock); \\
if (__predict_true((e) == 0)) { \\
knote(&(thisvp)->v_klist->vk_klist, (n)); \\
} \\
holdrelel((thisvp)); \\
mutex_exit((thisvp)->v_interlock); \\
/* \\
* thisvp might be gone now! Don't touch! \\
*/ \\
} while (/*CONSTCOND*/0)

#define vop_create_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_dvp, (e), NOTE_WRITE)

#define vop_mknod_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_dvp, (e), NOTE_WRITE)

#define vop_setattr_pre(ap) \\
u_quad_t osize = 0; \\
long vp_events = \\
VN_KEVENT_INTEREST((ap)->a_vp, NOTE_ATTRIB | NOTE_EXTEND) \\
? NOTE_ATTRIB : 0; \\
bool check_extend = false; \\
if (__predict_false(vp_events != 0 && \\
(ap)->a_vap->va_size != VNOVALSIZE)) { \\
check_extend = true; \\
osize = vop_pre_get_size((ap)->a_vp); \\
}

#define vop_setattr_post(ap, e) \\
do { \\
if (__predict_false(vp_events != 0)) { \\
if (__predict_false(check_extend && \\
(ap)->a_vap->va_size > osize)) { \\
vp_events |= NOTE_EXTEND; \\
} \\
VOP_POST_KNOTE((ap)->a_vp, (e), vp_events); \\
} \\
} while (/*CONSTCOND*/0)

#define vop_setacl_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_vp, (e), NOTE_ATTRIB)

#define vop_link_post(ap, e) \\
do { \\
VOP_POST_KNOTE((ap)->a_dvp, (e), NOTE_WRITE); \\
VOP_POST_KNOTE((ap)->a_vp, (e), NOTE_LINK); \\
} while (/*CONSTCOND*/0)

#define vop_mkdir_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_dvp, (e), NOTE_WRITE | NOTE_LINK)

#define vop_remove_pre_common(ap) \\
bool post_event_vp = \\
VN_KEVENT_INTEREST((ap)->a_vp, NOTE_DELETE | NOTE_LINK); \\
if (__predict_false(post_event_vp)) { \\
vhold((ap)->a_vp); \\
}

#define vop_remove_post_common(ap, e, dn, lc) \\
do { \\
VOP_POST_KNOTE((ap)->a_dvp, (e), (dn)); \\
if (__predict_false(post_event_vp)) { \\
VOP_POST_KNOTE_HELD((ap)->a_vp, (e), \\
(lc) ? NOTE_LINK : NOTE_DELETE); \\
} \\
} while (/*CONSTCOND*/0)

/*
* One could make the argument that VOP_REMOVE() should send NOTE_LINK
* on vp if the resulting link count is not zero, but that's not what
* the documentation says.
*
* We could change this easily by passing ap->ctx_vp_new_nlink to
* vop_remove_post_common().
*/
#define vop_remove_pre(ap) \\
vop_remove_pre_common((ap)); \\
/* \\
* We will assume that the file being removed is deleted unless \\
* the file system tells us otherwise by updating vp_new_nlink. \\
*/ \\
(ap)->ctx_vp_new_nlink = 0;

#define vop_remove_post(ap, e) \\
vop_remove_post_common((ap), (e), NOTE_WRITE, 0)

#define vop_rmdir_pre(ap) \\
vop_remove_pre_common(ap)

#define vop_rmdir_post(ap, e) \\
vop_remove_post_common((ap), (e), NOTE_WRITE | NOTE_LINK, 0)

#define vop_symlink_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_dvp, (e), NOTE_WRITE)

#define vop_open_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_vp, (e), NOTE_OPEN)

#define vop_close_post(ap, e) \\
do { \\
/* See the definition of VN_KNOTE() in <sys/vnode.h>. */ \\
if (__predict_false(VN_KEVENT_INTEREST((ap)->a_vp, \\
NOTE_CLOSE_WRITE | NOTE_CLOSE) && (e) == 0)) { \\
struct vnode *thisvp = (ap)->a_vp; \\
mutex_enter(thisvp->v_interlock); \\
/* \\
* Don't send NOTE_CLOSE when closing a vnode that's \\
* been reclaimed or otherwise revoked; a NOTE_REVOKE \\
* has already been sent, and this close is effectively \\
* meaningless from the watcher's perspective. \\
*/ \\
if (__predict_true(thisvp->v_op != dead_vnodeop_p)) { \\
knote(&thisvp->v_klist->vk_klist, \\
((ap)->a_fflag & FWRITE) \\
? NOTE_CLOSE_WRITE : NOTE_CLOSE); \\
} \\
mutex_exit(thisvp->v_interlock); \\
} \\
} while (/*CONSTCOND*/0)

#define vop_read_post(ap, e) \\
VOP_POST_KNOTE((ap)->a_vp, (e), NOTE_READ)

#define vop_write_pre(ap) \\
off_t ooffset = 0, noffset = 0; \\
u_quad_t osize = 0; \\
long vp_events = \\
VN_KEVENT_INTEREST((ap)->a_vp, NOTE_WRITE | NOTE_EXTEND) \\
? NOTE_WRITE : 0; \\
if (__predict_false(vp_events != 0)) { \\
ooffset = (ap)->a_uio->uio_offset; \\
osize = vop_pre_get_size((ap)->a_vp); \\
}

#define vop_write_post(ap, e) \\
do { \\
/* \\
* If any data was written, we'll post an event, even if \\
* there was an error. \\
*/ \\
noffset = (ap)->a_uio->uio_offset; \\
if (__predict_false(vp_events != 0 && noffset > ooffset)) { \\
if (noffset > osize) { \\
vp_events |= NOTE_EXTEND; \\
} \\
VN_KNOTE((ap)->a_vp, vp_events); \\
} \\
} while (/*CONSTCOND*/0)

static inline void
vop_post(vnode_t *vp, struct mount *mp, bool mpsafe, enum fst_op op)
{

if (op == FST_YES || op == FST_LAZY) {
fstrans_done(mp);
}

if (!mpsafe) {
KERNEL_UNLOCK_ONE(curlwp);
}
}

static inline void
assert_vop_unlocked(vnode_t *vp, const char *str)
{
#if defined(VNODE_LOCKDEBUG)

if (VOP_ISLOCKED(vp) == LK_EXCLUSIVE)
panic(\"%s: %p %d/%d is locked but should not be\",
str, vp, vp->v_tag, vp->v_type);
#endif
}

static inline void
assert_vop_locked(vnode_t *vp, const char *str)
{
#if defined(VNODE_LOCKDEBUG)

if (VOP_ISLOCKED(vp) == LK_NONE)
panic(\"%s: %p %d/%d is not locked but should be\",
str, vp, vp->v_tag, vp->v_type);
#endif
}

static inline void
assert_vop_elocked(vnode_t *vp, const char *str)
{
#if defined(VNODE_LOCKDEBUG)

if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE)
panic(\"%s: %p %d/%d is not exclusive locked but should be\",
str, vp, vp->v_tag, vp->v_type);
#endif
}

const struct vnodeop_desc vop_default_desc = {"
echo ' 0,
"default",
0,
NULL,
VDESC_NO_OFFSET,
VDESC_NO_OFFSET,
VDESC_NO_OFFSET,
};
'
fi

# Body stuff
sed -e "$sed_prep" $src | $awk -v rump=${rump} -v lockdebug=${lockdebug} '
function do_offset(typematch) {
for (i=0; i<argc; i++) {
if (argtype[i] == typematch) {
printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n",
args_name, argname[i]);
return i;
};
};
print "\tVDESC_NO_OFFSET,";
return -1;
}

function offsets() {
# Define offsets array
printf("const int %s_vp_offsets[] = {\n", name);
for (i=0; i<argc; i++) {
if (argtype[i] == "struct vnode *") {
printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n",
args_name, argname[i]);
}
}
print "\tVDESC_NO_OFFSET";
print "};";
# Define F_desc
printf("const struct vnodeop_desc %s_desc = {\n", name);
# offset
printf ("\t%s_DESCOFFSET,\n", toupper(name));
# printable name
printf ("\t\"%s\",\n", name);
# flags
printf("\t0");
vpnum = 0;
for (i=0; i<argc; i++) {
if (willrele[i]) {
if (willrele[i] == 3) {
word = "PUT";
} else {
word = "RELE";
}
printf(" | VDESC_VP%s_WILL%s", vpnum, word);
}
if (argtype[i] == "struct vnode *")
vpnum++;
}
print ",";
# vp offsets
printf ("\t%s_vp_offsets,\n", name);
# vpp (if any)
do_offset("struct vnode **");
# cred (if any)
do_offset("kauth_cred_t");
# componentname
do_offset("struct componentname *");
printf ("};\n");
}

function bodyrump() {
printf("{\n\tint error;\n\n");
printf("\trump_schedule();\n");
printf("\terror = %s(", toupper(name));
for (i=0; i<argc; i++) {
printf("%s", argname[i]);
if (i < (argc-1)) printf(", ");
}
printf(");\n");
printf("\trump_unschedule();\n\n");
printf("\treturn error;\n}\n");
}

function bodynorm() {
printf("{\n\tint error;\n\tbool mpsafe;\n\tstruct %s_args a;\n",
args_name);
printf("\tstruct mount *mp;\n");
printf("\ta.a_desc = VDESC(%s);\n", name);
for (i=0; i<argc; i++) {
printf("\ta.a_%s = %s;\n", argname[i], argname[i]);
}
if (lockdebug) {
for (i=0; i<argc; i++) {
if (lockstate[i] == "")
continue;
printf("\tassert_vop_%s(%s, \"%s: %s\");\n",
lockstate[i], argname[i], name, argname[i]);
}
}
# This is done before generic vop_pre() because we want
# to do any setup before beginning an fstrans.
if (do_pre != "")
printf("\t%s(&a);\n", do_pre);
if (fstrans == "LOCK")
printf("\terror = vop_pre(%s, &mp, &mpsafe, %s);\n",
argname[0], "(!(flags & (LK_SHARED|LK_EXCLUSIVE)) ? FST_NO : (flags & LK_NOWAIT ? FST_TRY : FST_YES))");
else if (fstrans == "UNLOCK")
printf("\terror = vop_pre(%s, &mp, &mpsafe, FST_%s);\n",
argname[0], "NO");
else
printf("\terror = vop_pre(%s, &mp, &mpsafe, FST_%s);\n",
argname[0], fstrans);
printf("\tif (error)\n\t\treturn error;\n");
printf("\terror = (VCALL(%s, VOFFSET(%s), &a));\n",
argname[0], name);
if (fstrans == "LOCK")
printf("\tvop_post(%s, mp, mpsafe, %s);\n",
argname[0], "(flags & (LK_UPGRADE|LK_DOWNGRADE) ? FST_NO : (error ? FST_YES : FST_NO))");
else if (fstrans == "UNLOCK")
printf("\tvop_post(%s, mp, mpsafe, FST_%s);\n",
argname[0], "YES");
else
printf("\tvop_post(%s, mp, mpsafe, FST_%s);\n",
argname[0], fstrans);
# This is done after generic vop_post() in order to minimize
# time spent with the KERNEL_LOCK held for file systems that
# still require it.
if (do_post != "")
printf("\t%s(&a, error);\n", do_post);
if (willmake != -1) {
printf("#ifdef DIAGNOSTIC\n");
printf("\tif (error == 0)\n" \
"\t\tKASSERT((*%s)->v_size != VSIZENOTSET\n" \
"\t\t && (*%s)->v_writesize != VSIZENOTSET);\n",
argname[willmake], argname[willmake]);
printf("#endif /* DIAGNOSTIC */\n");
}
printf("\treturn error;\n}\n");
}

function doit() {
printf("\n");
if (!rump)
offsets();

if (rump)
extname = "RUMP_" toupper(name);
else
extname = toupper(name);

# Define function.
printf("int\n%s(", extname);
for (i=0; i<argc; i++) {
printf("%s %s", argtype[i], argname[i]);
if (i < (argc-1)) printf(",\n ");
}
printf(")\n");

if (rump)
bodyrump();
else
bodynorm();
}
BEGIN {
# start from 1 (vop_default is at 0)
argc=1;
}
'"$awk_parser" | sed -e "$anal_retentive"

# End stuff
[ -n "${rump}" ] && return

# Add the vfs_op_descs array to the C file.
# Begin stuff
echo "
const struct vnodeop_desc * const ${rump}vfs_op_descs[] = {
&${rump}vop_default_desc, /* MUST BE FIRST */
"

# Body stuff
sed -e "$sed_prep" $src | $awk -v rump=${rump} '
function doit() {
printf("\t&%s_desc,\n", name);
}
'"$awk_parser"

# End stuff
echo ' NULL
};'
}
do_cfile $out_c ''
do_cfile $out_rumpc 'rump_'

exit 0

# Local Variables:
# tab-width: 4
# End: