1540 lines
37 KiB
C
1540 lines
37 KiB
C
/* $NetBSD: kernfs_vnops.c,v 1.106 2004/10/27 06:55:53 skrll Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software donated to Berkeley by
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* Jan-Simon Pendry.
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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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* @(#)kernfs_vnops.c 8.15 (Berkeley) 5/21/95
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*/
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/*
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* Kernel parameter filesystem (/kern)
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kernfs_vnops.c,v 1.106 2004/10/27 06:55:53 skrll Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_ipsec.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/vmmeter.h>
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#include <sys/time.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/malloc.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <sys/namei.h>
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#include <sys/buf.h>
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#include <sys/dirent.h>
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#include <sys/msgbuf.h>
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#include <miscfs/genfs/genfs.h>
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#include <miscfs/kernfs/kernfs.h>
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#ifdef IPSEC
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#include <sys/mbuf.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet6/ipsec.h>
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#include <netkey/key.h>
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#endif
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#include <uvm/uvm_extern.h>
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#define KSTRING 256 /* Largest I/O available via this filesystem */
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#define UIO_MX 32
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#define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH)
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#define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH)
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#define UREAD_MODE (S_IRUSR)
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#define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
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#define UDIR_MODE (S_IRUSR|S_IXUSR)
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#define N(s) sizeof(s)-1, s
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const struct kern_target kern_targets[] = {
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/* NOTE: The name must be less than UIO_MX-16 chars in length */
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/* name data tag type ro/rw */
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{ DT_DIR, N("."), 0, KFSkern, VDIR, DIR_MODE },
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{ DT_DIR, N(".."), 0, KFSroot, VDIR, DIR_MODE },
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{ DT_REG, N("boottime"), &boottime.tv_sec, KFSint, VREG, READ_MODE },
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/* XXX cast away const */
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{ DT_REG, N("copyright"), (void *)copyright,
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KFSstring, VREG, READ_MODE },
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{ DT_REG, N("hostname"), 0, KFShostname, VREG, WRITE_MODE },
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{ DT_REG, N("hz"), &hz, KFSint, VREG, READ_MODE },
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#ifdef IPSEC
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{ DT_DIR, N("ipsecsa"), 0, KFSipsecsadir, VDIR, UDIR_MODE },
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{ DT_DIR, N("ipsecsp"), 0, KFSipsecspdir, VDIR, UDIR_MODE },
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#endif
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{ DT_REG, N("loadavg"), 0, KFSavenrun, VREG, READ_MODE },
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{ DT_REG, N("msgbuf"), 0, KFSmsgbuf, VREG, READ_MODE },
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{ DT_REG, N("pagesize"), &uvmexp.pagesize, KFSint, VREG, READ_MODE },
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{ DT_REG, N("physmem"), &physmem, KFSint, VREG, READ_MODE },
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#if 0
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{ DT_DIR, N("root"), 0, KFSnull, VDIR, DIR_MODE },
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#endif
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{ DT_BLK, N("rootdev"), &rootdev, KFSdevice, VBLK, READ_MODE },
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{ DT_CHR, N("rrootdev"), &rrootdev, KFSdevice, VCHR, READ_MODE },
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{ DT_REG, N("time"), 0, KFStime, VREG, READ_MODE },
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/* XXX cast away const */
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{ DT_REG, N("version"), (void *)version,
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KFSstring, VREG, READ_MODE },
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};
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const struct kern_target subdir_targets[] = {
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/* NOTE: The name must be less than UIO_MX-16 chars in length */
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/* name data tag type ro/rw */
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{ DT_DIR, N("."), 0, KFSsubdir, VDIR, DIR_MODE },
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{ DT_DIR, N(".."), 0, KFSkern, VDIR, DIR_MODE },
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};
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#ifdef IPSEC
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const struct kern_target ipsecsa_targets[] = {
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/* NOTE: The name must be less than UIO_MX-16 chars in length */
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/* name data tag type ro/rw */
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{ DT_DIR, N("."), 0, KFSipsecsadir, VDIR, DIR_MODE },
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{ DT_DIR, N(".."), 0, KFSkern, VDIR, DIR_MODE },
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};
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const struct kern_target ipsecsp_targets[] = {
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/* NOTE: The name must be less than UIO_MX-16 chars in length */
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/* name data tag type ro/rw */
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{ DT_DIR, N("."), 0, KFSipsecspdir, VDIR, DIR_MODE },
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{ DT_DIR, N(".."), 0, KFSkern, VDIR, DIR_MODE },
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};
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const struct kern_target ipsecsa_kt =
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{ DT_DIR, N(""), 0, KFSipsecsa, VREG, UREAD_MODE };
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const struct kern_target ipsecsp_kt =
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{ DT_DIR, N(""), 0, KFSipsecsp, VREG, UREAD_MODE };
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#endif
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#undef N
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SIMPLEQ_HEAD(,dyn_kern_target) dyn_kern_targets =
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SIMPLEQ_HEAD_INITIALIZER(dyn_kern_targets);
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int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]);
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const int static_nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]);
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#ifdef IPSEC
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int nipsecsa_targets = sizeof(ipsecsa_targets) / sizeof(ipsecsa_targets[0]);
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int nipsecsp_targets = sizeof(ipsecsp_targets) / sizeof(ipsecsp_targets[0]);
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int nkern_dirs = 4; /* 2 extra subdirs */
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#else
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int nkern_dirs = 2;
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#endif
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int kernfs_try_fileop(kfstype, kfsfileop, void *, int);
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int kernfs_try_xwrite(kfstype, const struct kernfs_node *, char *,
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size_t, int);
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static int kernfs_default_xwrite(void *v);
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static int kernfs_default_fileop_getattr(void *);
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/* must include all fileop's */
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const struct kernfs_fileop kernfs_default_fileops[] = {
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{ .kf_fileop = KERNFS_XWRITE },
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{ .kf_fileop = KERNFS_FILEOP_OPEN },
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{ .kf_fileop = KERNFS_FILEOP_GETATTR,
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.kf_genop = {kernfs_default_fileop_getattr} },
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{ .kf_fileop = KERNFS_FILEOP_IOCTL },
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{ .kf_fileop = KERNFS_FILEOP_MMAP },
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{ .kf_fileop = KERNFS_FILEOP_CLOSE },
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{ .kf_fileop = KERNFS_FILEOP_WRITE, .kf_genop = {kernfs_default_xwrite} },
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};
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int kernfs_lookup __P((void *));
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#define kernfs_create genfs_eopnotsupp
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#define kernfs_mknod genfs_eopnotsupp
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int kernfs_open __P((void *));
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int kernfs_close __P((void *));
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int kernfs_access __P((void *));
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int kernfs_getattr __P((void *));
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int kernfs_setattr __P((void *));
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int kernfs_read __P((void *));
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int kernfs_write __P((void *));
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#define kernfs_fcntl genfs_fcntl
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int kernfs_ioctl __P((void *));
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#define kernfs_poll genfs_poll
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#define kernfs_revoke genfs_revoke
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int kernfs_mmap __P((void *));
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#define kernfs_fsync genfs_nullop
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#define kernfs_seek genfs_nullop
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#define kernfs_remove genfs_eopnotsupp
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int kernfs_link __P((void *));
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#define kernfs_rename genfs_eopnotsupp
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#define kernfs_mkdir genfs_eopnotsupp
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#define kernfs_rmdir genfs_eopnotsupp
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int kernfs_symlink __P((void *));
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int kernfs_readdir __P((void *));
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#define kernfs_readlink genfs_eopnotsupp
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#define kernfs_abortop genfs_abortop
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int kernfs_inactive __P((void *));
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int kernfs_reclaim __P((void *));
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#define kernfs_lock genfs_lock
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#define kernfs_unlock genfs_unlock
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#define kernfs_bmap genfs_badop
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#define kernfs_strategy genfs_badop
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int kernfs_print __P((void *));
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#define kernfs_islocked genfs_islocked
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int kernfs_pathconf __P((void *));
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#define kernfs_advlock genfs_einval
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#define kernfs_blkatoff genfs_eopnotsupp
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#define kernfs_valloc genfs_eopnotsupp
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#define kernfs_vfree genfs_nullop
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#define kernfs_truncate genfs_eopnotsupp
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#define kernfs_update genfs_nullop
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#define kernfs_bwrite genfs_eopnotsupp
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#define kernfs_putpages genfs_putpages
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static int kernfs_xread __P((struct kernfs_node *, int, char **, size_t, size_t *));
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static int kernfs_xwrite __P((const struct kernfs_node *, char *, size_t));
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int (**kernfs_vnodeop_p) __P((void *));
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const struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = {
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{ &vop_default_desc, vn_default_error },
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{ &vop_lookup_desc, kernfs_lookup }, /* lookup */
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{ &vop_create_desc, kernfs_create }, /* create */
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{ &vop_mknod_desc, kernfs_mknod }, /* mknod */
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{ &vop_open_desc, kernfs_open }, /* open */
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{ &vop_close_desc, kernfs_close }, /* close */
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{ &vop_access_desc, kernfs_access }, /* access */
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{ &vop_getattr_desc, kernfs_getattr }, /* getattr */
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{ &vop_setattr_desc, kernfs_setattr }, /* setattr */
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{ &vop_read_desc, kernfs_read }, /* read */
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{ &vop_write_desc, kernfs_write }, /* write */
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{ &vop_fcntl_desc, kernfs_fcntl }, /* fcntl */
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{ &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */
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{ &vop_poll_desc, kernfs_poll }, /* poll */
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{ &vop_revoke_desc, kernfs_revoke }, /* revoke */
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{ &vop_mmap_desc, kernfs_mmap }, /* mmap */
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{ &vop_fsync_desc, kernfs_fsync }, /* fsync */
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{ &vop_seek_desc, kernfs_seek }, /* seek */
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{ &vop_remove_desc, kernfs_remove }, /* remove */
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{ &vop_link_desc, kernfs_link }, /* link */
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{ &vop_rename_desc, kernfs_rename }, /* rename */
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{ &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */
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{ &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */
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{ &vop_symlink_desc, kernfs_symlink }, /* symlink */
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{ &vop_readdir_desc, kernfs_readdir }, /* readdir */
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{ &vop_readlink_desc, kernfs_readlink }, /* readlink */
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{ &vop_abortop_desc, kernfs_abortop }, /* abortop */
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{ &vop_inactive_desc, kernfs_inactive }, /* inactive */
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{ &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */
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{ &vop_lock_desc, kernfs_lock }, /* lock */
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{ &vop_unlock_desc, kernfs_unlock }, /* unlock */
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{ &vop_bmap_desc, kernfs_bmap }, /* bmap */
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{ &vop_strategy_desc, kernfs_strategy }, /* strategy */
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{ &vop_print_desc, kernfs_print }, /* print */
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{ &vop_islocked_desc, kernfs_islocked }, /* islocked */
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{ &vop_pathconf_desc, kernfs_pathconf }, /* pathconf */
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{ &vop_advlock_desc, kernfs_advlock }, /* advlock */
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{ &vop_blkatoff_desc, kernfs_blkatoff }, /* blkatoff */
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{ &vop_valloc_desc, kernfs_valloc }, /* valloc */
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{ &vop_vfree_desc, kernfs_vfree }, /* vfree */
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{ &vop_truncate_desc, kernfs_truncate }, /* truncate */
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{ &vop_update_desc, kernfs_update }, /* update */
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{ &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */
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{ &vop_putpages_desc, kernfs_putpages }, /* putpages */
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{ NULL, NULL }
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};
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const struct vnodeopv_desc kernfs_vnodeop_opv_desc =
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{ &kernfs_vnodeop_p, kernfs_vnodeop_entries };
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static __inline int
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kernfs_fileop_compare(struct kernfs_fileop *a, struct kernfs_fileop *b)
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{
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if (a->kf_type < b->kf_type)
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return -1;
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if (a->kf_type > b->kf_type)
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return 1;
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if (a->kf_fileop < b->kf_fileop)
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return -1;
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if (a->kf_fileop > b->kf_fileop)
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return 1;
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return (0);
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}
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SPLAY_HEAD(kfsfileoptree, kernfs_fileop) kfsfileoptree =
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SPLAY_INITIALIZER(kfsfileoptree);
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SPLAY_PROTOTYPE(kfsfileoptree, kernfs_fileop, kf_node, kernfs_fileop_compare);
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SPLAY_GENERATE(kfsfileoptree, kernfs_fileop, kf_node, kernfs_fileop_compare);
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kfstype
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kernfs_alloctype(int nkf, const struct kernfs_fileop *kf)
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{
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static u_char nextfreetype = KFSlasttype;
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struct kernfs_fileop *dkf, *fkf, skf;
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int i;
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/* XXX need to keep track of dkf's memory if we support
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deallocating types */
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dkf = malloc(sizeof(kernfs_default_fileops), M_TEMP, M_WAITOK);
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memcpy(dkf, kernfs_default_fileops, sizeof(kernfs_default_fileops));
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for (i = 0; i < sizeof(kernfs_default_fileops) /
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sizeof(kernfs_default_fileops[0]); i++) {
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dkf[i].kf_type = nextfreetype;
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SPLAY_INSERT(kfsfileoptree, &kfsfileoptree, &dkf[i]);
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}
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for (i = 0; i < nkf; i++) {
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skf.kf_type = nextfreetype;
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skf.kf_fileop = kf[i].kf_fileop;
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if ((fkf = SPLAY_FIND(kfsfileoptree, &kfsfileoptree, &skf)))
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fkf->kf_genop = kf[i].kf_genop;
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}
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return nextfreetype++;
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}
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int
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kernfs_try_fileop(kfstype type, kfsfileop fileop, void *v, int error)
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{
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struct kernfs_fileop *kf, skf;
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skf.kf_type = type;
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skf.kf_fileop = fileop;
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if ((kf = SPLAY_FIND(kfsfileoptree, &kfsfileoptree, &skf)))
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if (kf->kf_vop)
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return kf->kf_vop(v);
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return error;
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}
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int
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kernfs_try_xwrite(kfstype type, const struct kernfs_node *kfs, char *buf,
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size_t len, int error)
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{
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struct kernfs_fileop *kf, skf;
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skf.kf_type = type;
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skf.kf_fileop = KERNFS_XWRITE;
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if ((kf = SPLAY_FIND(kfsfileoptree, &kfsfileoptree, &skf)))
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if (kf->kf_xwrite)
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return kf->kf_xwrite(kfs, buf, len);
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return error;
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}
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int
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kernfs_addentry(kernfs_parentdir_t *pkt, kernfs_entry_t *dkt)
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{
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struct kernfs_subdir *ks, *parent;
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if (pkt == NULL) {
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SIMPLEQ_INSERT_TAIL(&dyn_kern_targets, dkt, dkt_queue);
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nkern_targets++;
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if (dkt->dkt_kt.kt_vtype == VDIR)
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nkern_dirs++;
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} else {
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parent = (struct kernfs_subdir *)pkt->kt_data;
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SIMPLEQ_INSERT_TAIL(&parent->ks_entries, dkt, dkt_queue);
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parent->ks_nentries++;
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if (dkt->dkt_kt.kt_vtype == VDIR)
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parent->ks_dirs++;
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}
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if (dkt->dkt_kt.kt_vtype == VDIR && dkt->dkt_kt.kt_data == NULL) {
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ks = malloc(sizeof(struct kernfs_subdir),
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M_TEMP, M_WAITOK);
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SIMPLEQ_INIT(&ks->ks_entries);
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ks->ks_nentries = 2; /* . and .. */
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ks->ks_dirs = 2;
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ks->ks_parent = pkt ? pkt : &kern_targets[0];
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dkt->dkt_kt.kt_data = ks;
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}
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return 0;
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}
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static int
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kernfs_xread(kfs, off, bufp, len, wrlen)
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struct kernfs_node *kfs;
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int off;
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char **bufp;
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size_t len;
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size_t *wrlen;
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{
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const struct kern_target *kt;
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#ifdef IPSEC
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struct mbuf *m;
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#endif
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kt = kfs->kfs_kt;
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switch (kfs->kfs_type) {
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case KFStime: {
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struct timeval tv;
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microtime(&tv);
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snprintf(*bufp, len, "%ld %ld\n", tv.tv_sec, tv.tv_usec);
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break;
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}
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case KFSint: {
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int *ip = kt->kt_data;
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snprintf(*bufp, len, "%d\n", *ip);
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break;
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}
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case KFSstring: {
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char *cp = kt->kt_data;
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*bufp = cp;
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break;
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}
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|
case KFSmsgbuf: {
|
|
long n;
|
|
|
|
/*
|
|
* deal with cases where the message buffer has
|
|
* become corrupted.
|
|
*/
|
|
if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) {
|
|
msgbufenabled = 0;
|
|
return (ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Note that reads of /kern/msgbuf won't necessarily yield
|
|
* consistent results, if the message buffer is modified
|
|
* while the read is in progress. The worst that can happen
|
|
* is that incorrect data will be read. There's no way
|
|
* that this can crash the system unless the values in the
|
|
* message buffer header are corrupted, but that'll cause
|
|
* the system to die anyway.
|
|
*/
|
|
if (off >= msgbufp->msg_bufs) {
|
|
*wrlen = 0;
|
|
return (0);
|
|
}
|
|
n = msgbufp->msg_bufx + off;
|
|
if (n >= msgbufp->msg_bufs)
|
|
n -= msgbufp->msg_bufs;
|
|
len = min(msgbufp->msg_bufs - n, msgbufp->msg_bufs - off);
|
|
*bufp = msgbufp->msg_bufc + n;
|
|
*wrlen = len;
|
|
return (0);
|
|
}
|
|
|
|
case KFShostname: {
|
|
char *cp = hostname;
|
|
int xlen = hostnamelen;
|
|
|
|
if (xlen >= (len - 2))
|
|
return (EINVAL);
|
|
|
|
memcpy(*bufp, cp, xlen);
|
|
(*bufp)[xlen] = '\n';
|
|
(*bufp)[xlen+1] = '\0';
|
|
len = strlen(*bufp);
|
|
break;
|
|
}
|
|
|
|
case KFSavenrun:
|
|
averunnable.fscale = FSCALE;
|
|
snprintf(*bufp, len, "%d %d %d %ld\n",
|
|
averunnable.ldavg[0], averunnable.ldavg[1],
|
|
averunnable.ldavg[2], averunnable.fscale);
|
|
break;
|
|
|
|
#ifdef IPSEC
|
|
case KFSipsecsa:
|
|
/*
|
|
* Note that SA configuration could be changed during the
|
|
* read operation, resulting in garbled output.
|
|
*/
|
|
m = key_setdumpsa_spi(htonl(kfs->kfs_value));
|
|
if (!m)
|
|
return (ENOBUFS);
|
|
if (off >= m->m_pkthdr.len) {
|
|
*wrlen = 0;
|
|
m_freem(m);
|
|
return (0);
|
|
}
|
|
if (len > m->m_pkthdr.len - off)
|
|
len = m->m_pkthdr.len - off;
|
|
m_copydata(m, off, len, *bufp);
|
|
*wrlen = len;
|
|
m_freem(m);
|
|
return (0);
|
|
|
|
case KFSipsecsp:
|
|
/*
|
|
* Note that SP configuration could be changed during the
|
|
* read operation, resulting in garbled output.
|
|
*/
|
|
if (!kfs->kfs_v) {
|
|
struct secpolicy *sp;
|
|
|
|
sp = key_getspbyid(kfs->kfs_value);
|
|
if (sp)
|
|
kfs->kfs_v = sp;
|
|
else
|
|
return (ENOENT);
|
|
}
|
|
m = key_setdumpsp((struct secpolicy *)kfs->kfs_v,
|
|
SADB_X_SPDGET, 0, 0);
|
|
if (!m)
|
|
return (ENOBUFS);
|
|
if (off >= m->m_pkthdr.len) {
|
|
*wrlen = 0;
|
|
m_freem(m);
|
|
return (0);
|
|
}
|
|
if (len > m->m_pkthdr.len - off)
|
|
len = m->m_pkthdr.len - off;
|
|
m_copydata(m, off, len, *bufp);
|
|
*wrlen = len;
|
|
m_freem(m);
|
|
return (0);
|
|
#endif
|
|
|
|
default:
|
|
*wrlen = 0;
|
|
return (0);
|
|
}
|
|
|
|
len = strlen(*bufp);
|
|
if (len <= off)
|
|
*wrlen = 0;
|
|
else {
|
|
*bufp += off;
|
|
*wrlen = len - off;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
kernfs_xwrite(kfs, buf, len)
|
|
const struct kernfs_node *kfs;
|
|
char *buf;
|
|
size_t len;
|
|
{
|
|
|
|
switch (kfs->kfs_type) {
|
|
case KFShostname:
|
|
if (buf[len-1] == '\n')
|
|
--len;
|
|
memcpy(hostname, buf, len);
|
|
hostname[len] = '\0';
|
|
hostnamelen = (size_t) len;
|
|
return (0);
|
|
|
|
default:
|
|
return kernfs_try_xwrite(kfs->kfs_type, kfs, buf, len, EIO);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* vp is the current namei directory
|
|
* ndp is the name to locate in that directory...
|
|
*/
|
|
int
|
|
kernfs_lookup(v)
|
|
void *v;
|
|
{
|
|
struct vop_lookup_args /* {
|
|
struct vnode * a_dvp;
|
|
struct vnode ** a_vpp;
|
|
struct componentname * a_cnp;
|
|
} */ *ap = v;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct vnode **vpp = ap->a_vpp;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
const char *pname = cnp->cn_nameptr;
|
|
const struct kernfs_node *kfs;
|
|
const struct kern_target *kt;
|
|
const struct dyn_kern_target *dkt;
|
|
const struct kernfs_subdir *ks;
|
|
int error, i, wantpunlock;
|
|
#ifdef IPSEC
|
|
char *ep;
|
|
u_int32_t id;
|
|
#endif
|
|
|
|
*vpp = NULLVP;
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
|
|
if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)
|
|
return (EROFS);
|
|
|
|
if (cnp->cn_namelen == 1 && *pname == '.') {
|
|
*vpp = dvp;
|
|
VREF(dvp);
|
|
return (0);
|
|
}
|
|
|
|
wantpunlock = (~cnp->cn_flags & (LOCKPARENT | ISLASTCN));
|
|
kfs = VTOKERN(dvp);
|
|
switch (kfs->kfs_type) {
|
|
case KFSkern:
|
|
/*
|
|
* Shouldn't get here with .. in the root node.
|
|
*/
|
|
if (cnp->cn_flags & ISDOTDOT)
|
|
return (EIO);
|
|
|
|
for (i = 0; i < static_nkern_targets; i++) {
|
|
kt = &kern_targets[i];
|
|
if (cnp->cn_namelen == kt->kt_namlen &&
|
|
memcmp(kt->kt_name, pname, cnp->cn_namelen) == 0)
|
|
goto found;
|
|
}
|
|
SIMPLEQ_FOREACH(dkt, &dyn_kern_targets, dkt_queue) {
|
|
if (cnp->cn_namelen == dkt->dkt_kt.kt_namlen &&
|
|
memcmp(dkt->dkt_kt.kt_name, pname, cnp->cn_namelen) == 0) {
|
|
kt = &dkt->dkt_kt;
|
|
goto found;
|
|
}
|
|
}
|
|
break;
|
|
|
|
found:
|
|
error = kernfs_allocvp(dvp->v_mount, vpp, kt->kt_tag, kt, 0);
|
|
if ((error == 0) && wantpunlock) {
|
|
VOP_UNLOCK(dvp, 0);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
return (error);
|
|
|
|
case KFSsubdir:
|
|
ks = (struct kernfs_subdir *)kfs->kfs_kt->kt_data;
|
|
if (cnp->cn_flags & ISDOTDOT) {
|
|
kt = ks->ks_parent;
|
|
goto found;
|
|
}
|
|
|
|
SIMPLEQ_FOREACH(dkt, &ks->ks_entries, dkt_queue) {
|
|
if (cnp->cn_namelen == dkt->dkt_kt.kt_namlen &&
|
|
memcmp(dkt->dkt_kt.kt_name, pname, cnp->cn_namelen) == 0) {
|
|
kt = &dkt->dkt_kt;
|
|
goto found;
|
|
}
|
|
}
|
|
break;
|
|
|
|
#ifdef IPSEC
|
|
case KFSipsecsadir:
|
|
if (cnp->cn_flags & ISDOTDOT) {
|
|
kt = &kern_targets[0];
|
|
goto found;
|
|
}
|
|
|
|
for (i = 2; i < nipsecsa_targets; i++) {
|
|
kt = &ipsecsa_targets[i];
|
|
if (cnp->cn_namelen == kt->kt_namlen &&
|
|
memcmp(kt->kt_name, pname, cnp->cn_namelen) == 0)
|
|
goto found;
|
|
}
|
|
|
|
ep = NULL;
|
|
id = strtoul(pname, &ep, 10);
|
|
if (!ep || *ep || ep == pname)
|
|
break;
|
|
|
|
error = kernfs_allocvp(dvp->v_mount, vpp, KFSipsecsa, &ipsecsa_kt, id);
|
|
if ((error == 0) && wantpunlock) {
|
|
VOP_UNLOCK(dvp, 0);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
return (error);
|
|
|
|
case KFSipsecspdir:
|
|
if (cnp->cn_flags & ISDOTDOT) {
|
|
kt = &kern_targets[0];
|
|
goto found;
|
|
}
|
|
|
|
for (i = 2; i < nipsecsp_targets; i++) {
|
|
kt = &ipsecsp_targets[i];
|
|
if (cnp->cn_namelen == kt->kt_namlen &&
|
|
memcmp(kt->kt_name, pname, cnp->cn_namelen) == 0)
|
|
goto found;
|
|
}
|
|
|
|
ep = NULL;
|
|
id = strtoul(pname, &ep, 10);
|
|
if (!ep || *ep || ep == pname)
|
|
break;
|
|
|
|
error = kernfs_allocvp(dvp->v_mount, vpp, KFSipsecsp, &ipsecsp_kt, id);
|
|
if ((error == 0) && wantpunlock) {
|
|
VOP_UNLOCK(dvp, 0);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
return (error);
|
|
#endif
|
|
|
|
default:
|
|
return (ENOTDIR);
|
|
}
|
|
|
|
return (cnp->cn_nameiop == LOOKUP ? ENOENT : EROFS);
|
|
}
|
|
|
|
int
|
|
kernfs_open(v)
|
|
void *v;
|
|
{
|
|
struct vop_open_args /* {
|
|
struct vnode *a_vp;
|
|
int a_mode;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
#ifdef IPSEC
|
|
struct mbuf *m;
|
|
struct secpolicy *sp;
|
|
#endif
|
|
|
|
switch (kfs->kfs_type) {
|
|
#ifdef IPSEC
|
|
case KFSipsecsa:
|
|
m = key_setdumpsa_spi(htonl(kfs->kfs_value));
|
|
if (m) {
|
|
m_freem(m);
|
|
return (0);
|
|
} else
|
|
return (ENOENT);
|
|
|
|
case KFSipsecsp:
|
|
sp = key_getspbyid(kfs->kfs_value);
|
|
if (sp) {
|
|
kfs->kfs_v = sp;
|
|
return (0);
|
|
} else
|
|
return (ENOENT);
|
|
#endif
|
|
|
|
default:
|
|
return kernfs_try_fileop(kfs->kfs_type, KERNFS_FILEOP_OPEN,
|
|
v, 0);
|
|
}
|
|
}
|
|
|
|
int
|
|
kernfs_close(v)
|
|
void *v;
|
|
{
|
|
struct vop_close_args /* {
|
|
struct vnode *a_vp;
|
|
int a_fflag;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
|
|
switch (kfs->kfs_type) {
|
|
#ifdef IPSEC
|
|
case KFSipsecsp:
|
|
key_freesp((struct secpolicy *)kfs->kfs_v);
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
return kernfs_try_fileop(kfs->kfs_type, KERNFS_FILEOP_CLOSE,
|
|
v, 0);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kernfs_access(v)
|
|
void *v;
|
|
{
|
|
struct vop_access_args /* {
|
|
struct vnode *a_vp;
|
|
int a_mode;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vattr va;
|
|
int error;
|
|
|
|
if ((error = VOP_GETATTR(ap->a_vp, &va, ap->a_cred, ap->a_p)) != 0)
|
|
return (error);
|
|
|
|
return (vaccess(va.va_type, va.va_mode, va.va_uid, va.va_gid,
|
|
ap->a_mode, ap->a_cred));
|
|
}
|
|
|
|
static int
|
|
kernfs_default_fileop_getattr(v)
|
|
void *v;
|
|
{
|
|
struct vop_getattr_args /* {
|
|
struct vnode *a_vp;
|
|
struct vattr *a_vap;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vattr *vap = ap->a_vap;
|
|
|
|
vap->va_nlink = 1;
|
|
vap->va_bytes = vap->va_size = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
kernfs_getattr(v)
|
|
void *v;
|
|
{
|
|
struct vop_getattr_args /* {
|
|
struct vnode *a_vp;
|
|
struct vattr *a_vap;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
struct kernfs_subdir *ks;
|
|
struct vattr *vap = ap->a_vap;
|
|
int error = 0;
|
|
char strbuf[KSTRING], *buf;
|
|
size_t nread, total;
|
|
|
|
VATTR_NULL(vap);
|
|
vap->va_type = ap->a_vp->v_type;
|
|
vap->va_uid = 0;
|
|
vap->va_gid = 0;
|
|
vap->va_mode = kfs->kfs_mode;
|
|
vap->va_fileid = kfs->kfs_fileno;
|
|
vap->va_flags = 0;
|
|
vap->va_size = 0;
|
|
vap->va_blocksize = DEV_BSIZE;
|
|
/*
|
|
* Make all times be current TOD, except for the "boottime" node.
|
|
* Avoid microtime(9), it's slow.
|
|
* We don't guard the read from time(9) with splclock(9) since we
|
|
* don't actually need to be THAT sure the access is atomic.
|
|
*/
|
|
if (kfs->kfs_kt && kfs->kfs_kt->kt_namlen == 8 &&
|
|
!memcmp(kfs->kfs_kt->kt_name, "boottime", 8)) {
|
|
TIMEVAL_TO_TIMESPEC(&boottime, &vap->va_ctime);
|
|
} else {
|
|
TIMEVAL_TO_TIMESPEC(&time, &vap->va_ctime);
|
|
}
|
|
vap->va_atime = vap->va_mtime = vap->va_ctime;
|
|
vap->va_gen = 0;
|
|
vap->va_flags = 0;
|
|
vap->va_rdev = 0;
|
|
vap->va_bytes = 0;
|
|
|
|
switch (kfs->kfs_type) {
|
|
case KFSkern:
|
|
vap->va_nlink = nkern_dirs;
|
|
vap->va_bytes = vap->va_size = DEV_BSIZE;
|
|
break;
|
|
|
|
case KFSroot:
|
|
vap->va_nlink = 1;
|
|
vap->va_bytes = vap->va_size = DEV_BSIZE;
|
|
break;
|
|
|
|
case KFSsubdir:
|
|
ks = (struct kernfs_subdir *)kfs->kfs_kt->kt_data;
|
|
vap->va_nlink = ks->ks_dirs;
|
|
vap->va_bytes = vap->va_size = DEV_BSIZE;
|
|
break;
|
|
|
|
case KFSnull:
|
|
case KFStime:
|
|
case KFSint:
|
|
case KFSstring:
|
|
case KFShostname:
|
|
case KFSavenrun:
|
|
case KFSdevice:
|
|
case KFSmsgbuf:
|
|
#ifdef IPSEC
|
|
case KFSipsecsa:
|
|
case KFSipsecsp:
|
|
#endif
|
|
vap->va_nlink = 1;
|
|
total = 0;
|
|
do {
|
|
buf = strbuf;
|
|
error = kernfs_xread(kfs, total, &buf,
|
|
sizeof(strbuf), &nread);
|
|
total += nread;
|
|
} while (error == 0 && nread != 0);
|
|
vap->va_bytes = vap->va_size = total;
|
|
break;
|
|
|
|
#ifdef IPSEC
|
|
case KFSipsecsadir:
|
|
case KFSipsecspdir:
|
|
vap->va_nlink = 2;
|
|
vap->va_bytes = vap->va_size = DEV_BSIZE;
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
error = kernfs_try_fileop(kfs->kfs_type,
|
|
KERNFS_FILEOP_GETATTR, v, EINVAL);
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
kernfs_setattr(v)
|
|
void *v;
|
|
{
|
|
|
|
/*
|
|
* Silently ignore attribute changes.
|
|
* This allows for open with truncate to have no
|
|
* effect until some data is written. I want to
|
|
* do it this way because all writes are atomic.
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kernfs_read(v)
|
|
void *v;
|
|
{
|
|
struct vop_read_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
struct ucred *a_cred;
|
|
} */ *ap = v;
|
|
struct uio *uio = ap->a_uio;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
char strbuf[KSTRING], *buf;
|
|
off_t off;
|
|
size_t len;
|
|
int error;
|
|
|
|
if (ap->a_vp->v_type == VDIR)
|
|
return (EOPNOTSUPP);
|
|
|
|
off = uio->uio_offset;
|
|
buf = strbuf;
|
|
if ((error = kernfs_xread(kfs, off, &buf, sizeof(strbuf), &len)) == 0)
|
|
error = uiomove(buf, len, uio);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
kernfs_default_xwrite(v)
|
|
void *v;
|
|
{
|
|
struct vop_write_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
struct ucred *a_cred;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
struct uio *uio = ap->a_uio;
|
|
int error, xlen;
|
|
char strbuf[KSTRING];
|
|
|
|
if (uio->uio_offset != 0)
|
|
return (EINVAL);
|
|
|
|
xlen = min(uio->uio_resid, KSTRING-1);
|
|
if ((error = uiomove(strbuf, xlen, uio)) != 0)
|
|
return (error);
|
|
|
|
if (uio->uio_resid != 0)
|
|
return (EIO);
|
|
|
|
strbuf[xlen] = '\0';
|
|
xlen = strlen(strbuf);
|
|
return (kernfs_xwrite(kfs, strbuf, xlen));
|
|
}
|
|
|
|
int
|
|
kernfs_write(v)
|
|
void *v;
|
|
{
|
|
struct vop_write_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
struct ucred *a_cred;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
|
|
return kernfs_try_fileop(kfs->kfs_type, KERNFS_FILEOP_WRITE, v, 0);
|
|
}
|
|
|
|
int
|
|
kernfs_ioctl(v)
|
|
void *v;
|
|
{
|
|
struct vop_ioctl_args /* {
|
|
const struct vnodeop_desc *a_desc;
|
|
struct vnode *a_vp;
|
|
u_long a_command;
|
|
void *a_data;
|
|
int a_fflag;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
|
|
return kernfs_try_fileop(kfs->kfs_type, KERNFS_FILEOP_IOCTL, v,
|
|
EPASSTHROUGH);
|
|
}
|
|
|
|
int
|
|
kernfs_mmap(v)
|
|
void *v;
|
|
{
|
|
struct vop_mmap_args /* {
|
|
const struct vnodeop_desc *a_desc;
|
|
struct vnode *a_vp;
|
|
int a_fflags;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
|
|
return kernfs_try_fileop(kfs->kfs_type, KERNFS_FILEOP_MMAP, v, 0);
|
|
}
|
|
|
|
static int
|
|
kernfs_setdirentfileno_kt(struct dirent *d, const struct kern_target *kt,
|
|
u_int32_t value, struct vop_readdir_args *ap)
|
|
{
|
|
struct kernfs_node *kfs;
|
|
struct vnode *vp;
|
|
int error;
|
|
|
|
if ((error = kernfs_allocvp(ap->a_vp->v_mount, &vp, kt->kt_tag, kt,
|
|
value)) != 0)
|
|
return error;
|
|
if (kt->kt_tag == KFSdevice) {
|
|
struct vattr va;
|
|
if ((error = VOP_GETATTR(vp, &va, ap->a_cred,
|
|
ap->a_uio->uio_segflg == UIO_USERSPACE ?
|
|
ap->a_uio->uio_procp : &proc0)) != 0)
|
|
return (error);
|
|
d->d_fileno = va.va_fileid;
|
|
} else {
|
|
kfs = VTOKERN(vp);
|
|
d->d_fileno = kfs->kfs_fileno;
|
|
}
|
|
vput(vp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
kernfs_setdirentfileno(struct dirent *d, off_t entry,
|
|
struct kernfs_node *thisdir_kfs, const struct kern_target *parent_kt,
|
|
const struct kern_target *kt, struct vop_readdir_args *ap)
|
|
{
|
|
const struct kern_target *ikt;
|
|
int error;
|
|
|
|
switch (entry) {
|
|
case 0:
|
|
d->d_fileno = thisdir_kfs->kfs_fileno;
|
|
return 0;
|
|
case 1:
|
|
ikt = parent_kt;
|
|
break;
|
|
default:
|
|
ikt = kt;
|
|
break;
|
|
}
|
|
if (ikt != thisdir_kfs->kfs_kt) {
|
|
if ((error = kernfs_setdirentfileno_kt(d, ikt, 0, ap)) != 0)
|
|
return error;
|
|
} else
|
|
d->d_fileno = thisdir_kfs->kfs_fileno;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
kernfs_readdir(v)
|
|
void *v;
|
|
{
|
|
struct vop_readdir_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
struct ucred *a_cred;
|
|
int *a_eofflag;
|
|
off_t **a_cookies;
|
|
int a_*ncookies;
|
|
} */ *ap = v;
|
|
struct uio *uio = ap->a_uio;
|
|
struct dirent d;
|
|
struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
const struct kern_target *kt;
|
|
const struct dyn_kern_target *dkt = NULL;
|
|
const struct kernfs_subdir *ks;
|
|
off_t i, j;
|
|
int error;
|
|
off_t *cookies = NULL;
|
|
int ncookies = 0, n;
|
|
#ifdef IPSEC
|
|
struct secasvar *sav, *sav2;
|
|
struct secpolicy *sp;
|
|
#endif
|
|
|
|
if (uio->uio_resid < UIO_MX)
|
|
return (EINVAL);
|
|
if (uio->uio_offset < 0)
|
|
return (EINVAL);
|
|
|
|
error = 0;
|
|
i = uio->uio_offset;
|
|
memset(&d, 0, sizeof(d));
|
|
d.d_reclen = UIO_MX;
|
|
ncookies = uio->uio_resid / UIO_MX;
|
|
|
|
switch (kfs->kfs_type) {
|
|
case KFSkern:
|
|
if (i >= nkern_targets)
|
|
return (0);
|
|
|
|
if (ap->a_ncookies) {
|
|
ncookies = min(ncookies, (nkern_targets - i));
|
|
cookies = malloc(ncookies * sizeof(off_t), M_TEMP,
|
|
M_WAITOK);
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
|
|
n = 0;
|
|
for (; i < nkern_targets && uio->uio_resid >= UIO_MX; i++) {
|
|
if (i < static_nkern_targets)
|
|
kt = &kern_targets[i];
|
|
else {
|
|
if (dkt == NULL) {
|
|
dkt = SIMPLEQ_FIRST(&dyn_kern_targets);
|
|
for (j = static_nkern_targets; j < i &&
|
|
dkt != NULL; j++)
|
|
dkt = SIMPLEQ_NEXT(dkt, dkt_queue);
|
|
if (j != i)
|
|
break;
|
|
} else {
|
|
dkt = SIMPLEQ_NEXT(dkt, dkt_queue);
|
|
if (dkt == NULL)
|
|
break;
|
|
}
|
|
kt = &dkt->dkt_kt;
|
|
}
|
|
if (kt->kt_tag == KFSdevice) {
|
|
dev_t *dp = kt->kt_data;
|
|
struct vnode *fvp;
|
|
|
|
if (*dp == NODEV ||
|
|
!vfinddev(*dp, kt->kt_vtype, &fvp))
|
|
continue;
|
|
}
|
|
d.d_namlen = kt->kt_namlen;
|
|
if ((error = kernfs_setdirentfileno(&d, i, kfs,
|
|
&kern_targets[0], kt, ap)) != 0)
|
|
break;
|
|
memcpy(d.d_name, kt->kt_name, kt->kt_namlen + 1);
|
|
d.d_type = kt->kt_type;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
}
|
|
ncookies = n;
|
|
break;
|
|
|
|
case KFSroot:
|
|
if (i >= 2)
|
|
return 0;
|
|
|
|
if (ap->a_ncookies) {
|
|
ncookies = min(ncookies, (2 - i));
|
|
cookies = malloc(ncookies * sizeof(off_t), M_TEMP,
|
|
M_WAITOK);
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
|
|
n = 0;
|
|
for (; i < 2 && uio->uio_resid >= UIO_MX; i++) {
|
|
kt = &kern_targets[i];
|
|
d.d_namlen = kt->kt_namlen;
|
|
d.d_fileno = KERNFS_FILENO(kt, kt->kt_tag, 0);
|
|
memcpy(d.d_name, kt->kt_name, kt->kt_namlen + 1);
|
|
d.d_type = kt->kt_type;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
}
|
|
ncookies = n;
|
|
break;
|
|
|
|
case KFSsubdir:
|
|
ks = (struct kernfs_subdir *)kfs->kfs_kt->kt_data;
|
|
if (i >= ks->ks_nentries)
|
|
return (0);
|
|
|
|
if (ap->a_ncookies) {
|
|
ncookies = min(ncookies, (ks->ks_nentries - i));
|
|
cookies = malloc(ncookies * sizeof(off_t), M_TEMP,
|
|
M_WAITOK);
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
|
|
dkt = SIMPLEQ_FIRST(&ks->ks_entries);
|
|
for (j = 0; j < i && dkt != NULL; j++)
|
|
dkt = SIMPLEQ_NEXT(dkt, dkt_queue);
|
|
n = 0;
|
|
for (; i < ks->ks_nentries && uio->uio_resid >= UIO_MX; i++) {
|
|
if (i < 2)
|
|
kt = &subdir_targets[i];
|
|
else {
|
|
/* check if ks_nentries lied to us */
|
|
if (dkt == NULL)
|
|
break;
|
|
kt = &dkt->dkt_kt;
|
|
dkt = SIMPLEQ_NEXT(dkt, dkt_queue);
|
|
}
|
|
if (kt->kt_tag == KFSdevice) {
|
|
dev_t *dp = kt->kt_data;
|
|
struct vnode *fvp;
|
|
|
|
if (*dp == NODEV ||
|
|
!vfinddev(*dp, kt->kt_vtype, &fvp))
|
|
continue;
|
|
}
|
|
d.d_namlen = kt->kt_namlen;
|
|
if ((error = kernfs_setdirentfileno(&d, i, kfs,
|
|
ks->ks_parent, kt, ap)) != 0)
|
|
break;
|
|
memcpy(d.d_name, kt->kt_name, kt->kt_namlen + 1);
|
|
d.d_type = kt->kt_type;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
}
|
|
ncookies = n;
|
|
break;
|
|
|
|
#ifdef IPSEC
|
|
case KFSipsecsadir:
|
|
/* count SA in the system */
|
|
n = 0;
|
|
TAILQ_FOREACH(sav, &satailq, tailq) {
|
|
for (sav2 = TAILQ_FIRST(&satailq);
|
|
sav2 != sav;
|
|
sav2 = TAILQ_NEXT(sav2, tailq)) {
|
|
if (sav->spi == sav2->spi) {
|
|
/* multiple SA with same SPI */
|
|
break;
|
|
}
|
|
}
|
|
if (sav == sav2 || sav->spi != sav2->spi)
|
|
n++;
|
|
}
|
|
|
|
if (i >= nipsecsa_targets + n)
|
|
return (0);
|
|
|
|
if (ap->a_ncookies) {
|
|
ncookies = min(ncookies, (n - i));
|
|
cookies = malloc(ncookies * sizeof(off_t), M_TEMP,
|
|
M_WAITOK);
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
|
|
n = 0;
|
|
for (; i < nipsecsa_targets && uio->uio_resid >= UIO_MX; i++) {
|
|
kt = &ipsecsa_targets[i];
|
|
d.d_namlen = kt->kt_namlen;
|
|
if ((error = kernfs_setdirentfileno(&d, i, kfs,
|
|
&kern_targets[0], kt, ap)) != 0)
|
|
break;
|
|
memcpy(d.d_name, kt->kt_name, kt->kt_namlen + 1);
|
|
d.d_type = kt->kt_type;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
}
|
|
if (error) {
|
|
ncookies = n;
|
|
break;
|
|
}
|
|
|
|
TAILQ_FOREACH(sav, &satailq, tailq) {
|
|
for (sav2 = TAILQ_FIRST(&satailq);
|
|
sav2 != sav;
|
|
sav2 = TAILQ_NEXT(sav2, tailq)) {
|
|
if (sav->spi == sav2->spi) {
|
|
/* multiple SA with same SPI */
|
|
break;
|
|
}
|
|
}
|
|
if (sav != sav2 && sav->spi == sav2->spi)
|
|
continue;
|
|
if (uio->uio_resid < UIO_MX)
|
|
break;
|
|
if ((error = kernfs_setdirentfileno_kt(&d, &ipsecsa_kt,
|
|
sav->spi, ap)) != 0)
|
|
break;
|
|
d.d_namlen = snprintf(d.d_name, sizeof(d.d_name),
|
|
"%u", ntohl(sav->spi));
|
|
d.d_type = DT_REG;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
i++;
|
|
}
|
|
ncookies = n;
|
|
break;
|
|
|
|
case KFSipsecspdir:
|
|
/* count SP in the system */
|
|
n = 0;
|
|
TAILQ_FOREACH(sp, &sptailq, tailq)
|
|
n++;
|
|
|
|
if (i >= nipsecsp_targets + n)
|
|
return (0);
|
|
|
|
if (ap->a_ncookies) {
|
|
ncookies = min(ncookies, (n - i));
|
|
cookies = malloc(ncookies * sizeof(off_t), M_TEMP,
|
|
M_WAITOK);
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
|
|
n = 0;
|
|
for (; i < nipsecsp_targets && uio->uio_resid >= UIO_MX; i++) {
|
|
kt = &ipsecsp_targets[i];
|
|
d.d_namlen = kt->kt_namlen;
|
|
if ((error = kernfs_setdirentfileno(&d, i, kfs,
|
|
&kern_targets[0], kt, ap)) != 0)
|
|
break;
|
|
memcpy(d.d_name, kt->kt_name, kt->kt_namlen + 1);
|
|
d.d_type = kt->kt_type;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
}
|
|
if (error) {
|
|
ncookies = n;
|
|
break;
|
|
}
|
|
|
|
TAILQ_FOREACH(sp, &sptailq, tailq) {
|
|
if (uio->uio_resid < UIO_MX)
|
|
break;
|
|
if ((error = kernfs_setdirentfileno_kt(&d, &ipsecsp_kt,
|
|
sp->id, ap)) != 0)
|
|
break;
|
|
d.d_namlen = snprintf(d.d_name, sizeof(d.d_name),
|
|
"%u", sp->id);
|
|
d.d_type = DT_REG;
|
|
if ((error = uiomove(&d, UIO_MX, uio)) != 0)
|
|
break;
|
|
if (cookies)
|
|
*cookies++ = i + 1;
|
|
n++;
|
|
i++;
|
|
}
|
|
ncookies = n;
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
error = ENOTDIR;
|
|
break;
|
|
}
|
|
|
|
if (ap->a_ncookies) {
|
|
if (error) {
|
|
if (cookies)
|
|
free(*ap->a_cookies, M_TEMP);
|
|
*ap->a_ncookies = 0;
|
|
*ap->a_cookies = NULL;
|
|
} else
|
|
*ap->a_ncookies = ncookies;
|
|
}
|
|
|
|
uio->uio_offset = i;
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
kernfs_inactive(v)
|
|
void *v;
|
|
{
|
|
struct vop_inactive_args /* {
|
|
struct vnode *a_vp;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
const struct kernfs_node *kfs = VTOKERN(ap->a_vp);
|
|
#ifdef IPSEC
|
|
struct mbuf *m;
|
|
struct secpolicy *sp;
|
|
#endif
|
|
|
|
VOP_UNLOCK(vp, 0);
|
|
switch (kfs->kfs_type) {
|
|
#ifdef IPSEC
|
|
case KFSipsecsa:
|
|
m = key_setdumpsa_spi(htonl(kfs->kfs_value));
|
|
if (m)
|
|
m_freem(m);
|
|
else
|
|
vgone(vp);
|
|
break;
|
|
case KFSipsecsp:
|
|
sp = key_getspbyid(kfs->kfs_value);
|
|
if (sp)
|
|
key_freesp(sp);
|
|
else {
|
|
/* should never happen as we hold a refcnt */
|
|
vgone(vp);
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kernfs_reclaim(v)
|
|
void *v;
|
|
{
|
|
struct vop_reclaim_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap = v;
|
|
|
|
return (kernfs_freevp(ap->a_vp));
|
|
}
|
|
|
|
/*
|
|
* Return POSIX pathconf information applicable to special devices.
|
|
*/
|
|
int
|
|
kernfs_pathconf(v)
|
|
void *v;
|
|
{
|
|
struct vop_pathconf_args /* {
|
|
struct vnode *a_vp;
|
|
int a_name;
|
|
register_t *a_retval;
|
|
} */ *ap = v;
|
|
|
|
switch (ap->a_name) {
|
|
case _PC_LINK_MAX:
|
|
*ap->a_retval = LINK_MAX;
|
|
return (0);
|
|
case _PC_MAX_CANON:
|
|
*ap->a_retval = MAX_CANON;
|
|
return (0);
|
|
case _PC_MAX_INPUT:
|
|
*ap->a_retval = MAX_INPUT;
|
|
return (0);
|
|
case _PC_PIPE_BUF:
|
|
*ap->a_retval = PIPE_BUF;
|
|
return (0);
|
|
case _PC_CHOWN_RESTRICTED:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
case _PC_VDISABLE:
|
|
*ap->a_retval = _POSIX_VDISABLE;
|
|
return (0);
|
|
case _PC_SYNC_IO:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* Print out the contents of a /dev/fd vnode.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
kernfs_print(v)
|
|
void *v;
|
|
{
|
|
|
|
printf("tag VT_KERNFS, kernfs vnode\n");
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kernfs_link(v)
|
|
void *v;
|
|
{
|
|
struct vop_link_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode *a_vp;
|
|
struct componentname *a_cnp;
|
|
} */ *ap = v;
|
|
|
|
VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
|
|
vput(ap->a_dvp);
|
|
return (EROFS);
|
|
}
|
|
|
|
int
|
|
kernfs_symlink(v)
|
|
void *v;
|
|
{
|
|
struct vop_symlink_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode **a_vpp;
|
|
struct componentname *a_cnp;
|
|
struct vattr *a_vap;
|
|
char *a_target;
|
|
} */ *ap = v;
|
|
|
|
VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
|
|
vput(ap->a_dvp);
|
|
return (EROFS);
|
|
}
|