Home | History | Annotate | Line # | Download | only in kern
vfs_xattr.c revision 1.17.2.1
      1  1.17.2.1      yamt /*	$NetBSD: vfs_xattr.c,v 1.17.2.1 2008/05/18 12:35:12 yamt Exp $	*/
      2       1.2   thorpej 
      3       1.2   thorpej /*-
      4      1.17        ad  * Copyright (c) 2005, 2008 The NetBSD Foundation, Inc.
      5       1.2   thorpej  * All rights reserved.
      6       1.2   thorpej  *
      7       1.2   thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8       1.2   thorpej  * by Jason R. Thorpe.
      9       1.2   thorpej  *
     10       1.2   thorpej  * Redistribution and use in source and binary forms, with or without
     11       1.2   thorpej  * modification, are permitted provided that the following conditions
     12       1.2   thorpej  * are met:
     13       1.2   thorpej  * 1. Redistributions of source code must retain the above copyright
     14       1.2   thorpej  *    notice, this list of conditions and the following disclaimer.
     15       1.2   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     16       1.2   thorpej  *    notice, this list of conditions and the following disclaimer in the
     17       1.2   thorpej  *    documentation and/or other materials provided with the distribution.
     18       1.2   thorpej  *
     19       1.2   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20       1.2   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.2   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.2   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23       1.2   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.2   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.2   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.2   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.2   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.2   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.2   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     30       1.2   thorpej  */
     31       1.1   thorpej 
     32       1.1   thorpej /*
     33       1.1   thorpej  * Copyright (c) 1989, 1993
     34       1.1   thorpej  *	The Regents of the University of California.  All rights reserved.
     35       1.1   thorpej  * (c) UNIX System Laboratories, Inc.
     36       1.1   thorpej  * All or some portions of this file are derived from material licensed
     37       1.1   thorpej  * to the University of California by American Telephone and Telegraph
     38       1.1   thorpej  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
     39       1.1   thorpej  * the permission of UNIX System Laboratories, Inc.
     40       1.1   thorpej  *
     41       1.1   thorpej  * Redistribution and use in source and binary forms, with or without
     42       1.1   thorpej  * modification, are permitted provided that the following conditions
     43       1.1   thorpej  * are met:
     44       1.1   thorpej  * 1. Redistributions of source code must retain the above copyright
     45       1.1   thorpej  *    notice, this list of conditions and the following disclaimer.
     46       1.1   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     47       1.1   thorpej  *    notice, this list of conditions and the following disclaimer in the
     48       1.1   thorpej  *    documentation and/or other materials provided with the distribution.
     49       1.1   thorpej  * 3. Neither the name of the University nor the names of its contributors
     50       1.1   thorpej  *    may be used to endorse or promote products derived from this software
     51       1.1   thorpej  *    without specific prior written permission.
     52       1.1   thorpej  *
     53       1.1   thorpej  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     54       1.1   thorpej  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     55       1.1   thorpej  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     56       1.1   thorpej  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     57       1.1   thorpej  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     58       1.1   thorpej  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     59       1.1   thorpej  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     60       1.1   thorpej  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     61       1.1   thorpej  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     62       1.1   thorpej  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     63       1.1   thorpej  * SUCH DAMAGE.
     64       1.1   thorpej  */
     65       1.1   thorpej 
     66       1.1   thorpej /*
     67       1.1   thorpej  * VFS extended attribute support.
     68       1.1   thorpej  */
     69       1.1   thorpej 
     70       1.1   thorpej #include <sys/cdefs.h>
     71  1.17.2.1      yamt __KERNEL_RCSID(0, "$NetBSD: vfs_xattr.c,v 1.17.2.1 2008/05/18 12:35:12 yamt Exp $");
     72       1.1   thorpej 
     73       1.1   thorpej #include <sys/param.h>
     74       1.1   thorpej #include <sys/systm.h>
     75       1.1   thorpej #include <sys/namei.h>
     76       1.1   thorpej #include <sys/filedesc.h>
     77       1.1   thorpej #include <sys/kernel.h>
     78       1.1   thorpej #include <sys/file.h>
     79       1.1   thorpej #include <sys/vnode.h>
     80       1.1   thorpej #include <sys/mount.h>
     81       1.1   thorpej #include <sys/proc.h>
     82       1.1   thorpej #include <sys/uio.h>
     83       1.1   thorpej #include <sys/extattr.h>
     84       1.2   thorpej #include <sys/xattr.h>
     85       1.1   thorpej #include <sys/sysctl.h>
     86       1.1   thorpej #include <sys/syscallargs.h>
     87       1.6      elad #include <sys/kauth.h>
     88       1.1   thorpej 
     89       1.1   thorpej /*
     90       1.3   thorpej  * Credential check based on process requesting service, and per-attribute
     91       1.3   thorpej  * permissions.
     92       1.3   thorpej  *
     93       1.3   thorpej  * NOTE: Vnode must be locked.
     94       1.3   thorpej  */
     95       1.3   thorpej int
     96       1.3   thorpej extattr_check_cred(struct vnode *vp, int attrnamespace,
     97       1.6      elad     kauth_cred_t cred, struct lwp *l, int access)
     98       1.3   thorpej {
     99       1.3   thorpej 
    100       1.3   thorpej 	if (cred == NOCRED)
    101       1.3   thorpej 		return (0);
    102       1.3   thorpej 
    103       1.3   thorpej 	switch (attrnamespace) {
    104       1.3   thorpej 	case EXTATTR_NAMESPACE_SYSTEM:
    105       1.3   thorpej 		/*
    106       1.3   thorpej 		 * Do we really want to allow this, or just require that
    107       1.3   thorpej 		 * these requests come from kernel code (NOCRED case above)?
    108       1.3   thorpej 		 */
    109       1.6      elad 		return (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER,
    110      1.10      elad 		    NULL));
    111       1.3   thorpej 
    112       1.3   thorpej 	case EXTATTR_NAMESPACE_USER:
    113      1.13     pooka 		return (VOP_ACCESS(vp, access, cred));
    114       1.3   thorpej 
    115       1.3   thorpej 	default:
    116       1.3   thorpej 		return (EPERM);
    117       1.3   thorpej 	}
    118       1.3   thorpej }
    119       1.3   thorpej 
    120       1.3   thorpej /*
    121       1.3   thorpej  * Default vfs_extattrctl routine for file systems that do not support
    122       1.3   thorpej  * it.
    123       1.3   thorpej  */
    124       1.3   thorpej /*ARGSUSED*/
    125       1.3   thorpej int
    126       1.9      yamt vfs_stdextattrctl(struct mount *mp, int cmt, struct vnode *vp,
    127      1.13     pooka     int attrnamespace, const char *attrname)
    128       1.3   thorpej {
    129       1.3   thorpej 
    130       1.3   thorpej 	if (vp != NULL)
    131       1.3   thorpej 		VOP_UNLOCK(vp, 0);
    132       1.3   thorpej 	return (EOPNOTSUPP);
    133       1.3   thorpej }
    134       1.3   thorpej 
    135       1.3   thorpej /*
    136       1.2   thorpej  * Push extended attribute configuration information into the file
    137       1.2   thorpej  * system.
    138       1.1   thorpej  *
    139       1.1   thorpej  * NOTE: Not all file systems that support extended attributes will
    140       1.1   thorpej  * require the use of this system call.
    141       1.1   thorpej  */
    142       1.1   thorpej int
    143      1.15       dsl sys_extattrctl(struct lwp *l, const struct sys_extattrctl_args *uap, register_t *retval)
    144       1.1   thorpej {
    145      1.15       dsl 	/* {
    146       1.1   thorpej 		syscallarg(const char *) path;
    147       1.1   thorpej 		syscallarg(int) cmd;
    148       1.1   thorpej 		syscallarg(const char *) filename;
    149       1.1   thorpej 		syscallarg(int) attrnamespace;
    150       1.1   thorpej 		syscallarg(const char *) attrname;
    151      1.15       dsl 	} */
    152       1.1   thorpej 	struct vnode *vp;
    153       1.1   thorpej 	struct nameidata nd;
    154       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    155       1.1   thorpej 	int error;
    156       1.1   thorpej 
    157       1.1   thorpej 	if (SCARG(uap, attrname) != NULL) {
    158       1.1   thorpej 		error = copyinstr(SCARG(uap, attrname), attrname,
    159       1.1   thorpej 		    sizeof(attrname), NULL);
    160       1.1   thorpej 		if (error)
    161       1.1   thorpej 			return (error);
    162       1.1   thorpej 	}
    163       1.1   thorpej 
    164       1.1   thorpej 	vp = NULL;
    165       1.1   thorpej 	if (SCARG(uap, filename) != NULL) {
    166       1.1   thorpej 		NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
    167      1.14     pooka 		    SCARG(uap, filename));
    168       1.1   thorpej 		error = namei(&nd);
    169       1.1   thorpej 		if (error)
    170       1.1   thorpej 			return (error);
    171       1.1   thorpej 		vp = nd.ni_vp;
    172       1.1   thorpej 	}
    173       1.1   thorpej 
    174      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    175       1.1   thorpej 	error = namei(&nd);
    176       1.1   thorpej 	if (error) {
    177       1.1   thorpej 		if (vp != NULL)
    178       1.1   thorpej 			vput(vp);
    179       1.1   thorpej 		return (error);
    180       1.1   thorpej 	}
    181       1.1   thorpej 
    182      1.12   hannken 	error = VFS_EXTATTRCTL(nd.ni_vp->v_mount, SCARG(uap, cmd), vp,
    183       1.1   thorpej 	    SCARG(uap, attrnamespace),
    184      1.13     pooka 	    SCARG(uap, attrname) != NULL ? attrname : NULL);
    185       1.1   thorpej 
    186       1.1   thorpej 	if (vp != NULL)
    187       1.1   thorpej 		vrele(vp);
    188       1.1   thorpej 
    189       1.1   thorpej 	return (error);
    190       1.1   thorpej }
    191       1.1   thorpej 
    192       1.1   thorpej /*****************************************************************************
    193       1.1   thorpej  * Internal routines to manipulate file system extended attributes:
    194       1.1   thorpej  *	- set
    195       1.1   thorpej  *	- get
    196       1.1   thorpej  *	- delete
    197       1.1   thorpej  *	- list
    198       1.1   thorpej  *****************************************************************************/
    199       1.1   thorpej 
    200       1.1   thorpej /*
    201       1.1   thorpej  * extattr_set_vp:
    202       1.1   thorpej  *
    203       1.1   thorpej  *	Set a named extended attribute on a file or directory.
    204       1.1   thorpej  */
    205       1.1   thorpej static int
    206       1.1   thorpej extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
    207       1.4  christos     const void *data, size_t nbytes, struct lwp *l, register_t *retval)
    208       1.1   thorpej {
    209       1.1   thorpej 	struct uio auio;
    210       1.1   thorpej 	struct iovec aiov;
    211       1.1   thorpej 	ssize_t cnt;
    212       1.1   thorpej 	int error;
    213       1.1   thorpej 
    214       1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    215       1.1   thorpej 
    216       1.1   thorpej 	aiov.iov_base = __UNCONST(data);	/* XXXUNCONST kills const */
    217       1.1   thorpej 	aiov.iov_len = nbytes;
    218       1.1   thorpej 	auio.uio_iov = &aiov;
    219       1.1   thorpej 	auio.uio_iovcnt = 1;
    220       1.1   thorpej 	auio.uio_offset = 0;
    221       1.1   thorpej 	if (nbytes > INT_MAX) {
    222       1.1   thorpej 		error = EINVAL;
    223       1.1   thorpej 		goto done;
    224       1.1   thorpej 	}
    225       1.1   thorpej 	auio.uio_resid = nbytes;
    226       1.1   thorpej 	auio.uio_rw = UIO_WRITE;
    227       1.5      yamt 	KASSERT(l == curlwp);
    228       1.5      yamt 	auio.uio_vmspace = l->l_proc->p_vmspace;
    229       1.1   thorpej 	cnt = nbytes;
    230       1.1   thorpej 
    231      1.13     pooka 	error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio, l->l_cred);
    232       1.1   thorpej 	cnt -= auio.uio_resid;
    233       1.1   thorpej 	retval[0] = cnt;
    234       1.1   thorpej 
    235       1.1   thorpej  done:
    236       1.1   thorpej 	VOP_UNLOCK(vp, 0);
    237       1.1   thorpej 	return (error);
    238       1.1   thorpej }
    239       1.1   thorpej 
    240       1.1   thorpej /*
    241       1.1   thorpej  * extattr_get_vp:
    242       1.1   thorpej  *
    243       1.1   thorpej  *	Get a named extended attribute on a file or directory.
    244       1.1   thorpej  */
    245       1.1   thorpej static int
    246       1.1   thorpej extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
    247       1.4  christos     void *data, size_t nbytes, struct lwp *l, register_t *retval)
    248       1.1   thorpej {
    249       1.1   thorpej 	struct uio auio, *auiop;
    250       1.1   thorpej 	struct iovec aiov;
    251       1.1   thorpej 	ssize_t cnt;
    252       1.1   thorpej 	size_t size, *sizep;
    253       1.1   thorpej 	int error;
    254       1.1   thorpej 
    255       1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    256       1.1   thorpej 
    257       1.1   thorpej 	/*
    258       1.1   thorpej 	 * Slightly unusual semantics: if the user provides a NULL data
    259       1.1   thorpej 	 * pointer, they don't want to receive the data, just the maximum
    260       1.1   thorpej 	 * read length.
    261       1.1   thorpej 	 */
    262       1.1   thorpej 	auiop = NULL;
    263       1.1   thorpej 	sizep = NULL;
    264       1.1   thorpej 	cnt = 0;
    265       1.1   thorpej 	if (data != NULL) {
    266       1.1   thorpej 		aiov.iov_base = data;
    267       1.1   thorpej 		aiov.iov_len = nbytes;
    268       1.1   thorpej 		auio.uio_iov = &aiov;
    269       1.1   thorpej 		auio.uio_offset = 0;
    270       1.1   thorpej 		if (nbytes > INT_MAX) {
    271       1.1   thorpej 			error = EINVAL;
    272       1.1   thorpej 			goto done;
    273       1.1   thorpej 		}
    274       1.1   thorpej 		auio.uio_resid = nbytes;
    275       1.1   thorpej 		auio.uio_rw = UIO_READ;
    276       1.5      yamt 		KASSERT(l == curlwp);
    277       1.5      yamt 		auio.uio_vmspace = l->l_proc->p_vmspace;
    278       1.1   thorpej 		auiop = &auio;
    279       1.1   thorpej 		cnt = nbytes;
    280       1.1   thorpej 	} else
    281       1.1   thorpej 		sizep = &size;
    282       1.1   thorpej 
    283       1.1   thorpej 	error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
    284      1.13     pooka 	    l->l_cred);
    285       1.1   thorpej 
    286       1.1   thorpej 	if (auiop != NULL) {
    287       1.1   thorpej 		cnt -= auio.uio_resid;
    288       1.1   thorpej 		retval[0] = cnt;
    289       1.1   thorpej 	} else
    290       1.1   thorpej 		retval[0] = size;
    291       1.1   thorpej 
    292       1.1   thorpej  done:
    293       1.1   thorpej 	VOP_UNLOCK(vp, 0);
    294       1.1   thorpej 	return (error);
    295       1.1   thorpej }
    296       1.1   thorpej 
    297       1.1   thorpej /*
    298       1.1   thorpej  * extattr_delete_vp:
    299       1.1   thorpej  *
    300       1.1   thorpej  *	Delete a named extended attribute on a file or directory.
    301       1.1   thorpej  */
    302       1.1   thorpej static int
    303       1.1   thorpej extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
    304       1.4  christos     struct lwp *l)
    305       1.1   thorpej {
    306       1.1   thorpej 	int error;
    307       1.1   thorpej 
    308       1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    309       1.1   thorpej 
    310      1.13     pooka 	error = VOP_DELETEEXTATTR(vp, attrnamespace, attrname, l->l_cred);
    311       1.1   thorpej 	if (error == EOPNOTSUPP)
    312       1.1   thorpej 		error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
    313      1.13     pooka 		    l->l_cred);
    314       1.1   thorpej 
    315       1.1   thorpej 	VOP_UNLOCK(vp, 0);
    316       1.1   thorpej 	return (error);
    317       1.1   thorpej }
    318       1.1   thorpej 
    319       1.1   thorpej /*
    320       1.1   thorpej  * extattr_list_vp:
    321       1.1   thorpej  *
    322       1.1   thorpej  *	Retrieve a list of extended attributes on a file or directory.
    323       1.1   thorpej  */
    324       1.1   thorpej static int
    325       1.1   thorpej extattr_list_vp(struct vnode *vp, int attrnamespace, void *data, size_t nbytes,
    326       1.4  christos     struct lwp *l, register_t *retval)
    327       1.1   thorpej {
    328       1.1   thorpej 	struct uio auio, *auiop;
    329       1.1   thorpej 	size_t size, *sizep;
    330       1.1   thorpej 	struct iovec aiov;
    331       1.1   thorpej 	ssize_t cnt;
    332       1.1   thorpej 	int error;
    333       1.1   thorpej 
    334       1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    335       1.1   thorpej 
    336       1.1   thorpej 	auiop = NULL;
    337       1.1   thorpej 	sizep = NULL;
    338       1.1   thorpej 	cnt = 0;
    339       1.1   thorpej 	if (data != NULL) {
    340       1.1   thorpej 		aiov.iov_base = data;
    341       1.1   thorpej 		aiov.iov_len = nbytes;
    342       1.1   thorpej 		auio.uio_iov = &aiov;
    343       1.1   thorpej 		auio.uio_offset = 0;
    344       1.1   thorpej 		if (nbytes > INT_MAX) {
    345       1.1   thorpej 			error = EINVAL;
    346       1.1   thorpej 			goto done;
    347       1.1   thorpej 		}
    348       1.1   thorpej 		auio.uio_resid = nbytes;
    349       1.1   thorpej 		auio.uio_rw = UIO_READ;
    350       1.5      yamt 		KASSERT(l == curlwp);
    351       1.5      yamt 		auio.uio_vmspace = l->l_proc->p_vmspace;
    352       1.1   thorpej 		auiop = &auio;
    353       1.1   thorpej 		cnt = nbytes;
    354       1.1   thorpej 	} else
    355       1.1   thorpej 		sizep = &size;
    356       1.1   thorpej 
    357      1.13     pooka 	error = VOP_LISTEXTATTR(vp, attrnamespace, auiop, sizep, l->l_cred);
    358       1.1   thorpej 
    359       1.1   thorpej 	if (auiop != NULL) {
    360       1.1   thorpej 		cnt -= auio.uio_resid;
    361       1.1   thorpej 		retval[0] = cnt;
    362       1.1   thorpej 	} else
    363       1.1   thorpej 		retval[0] = size;
    364       1.1   thorpej 
    365       1.1   thorpej  done:
    366       1.1   thorpej 	VOP_UNLOCK(vp, 0);
    367       1.1   thorpej 	return (error);
    368       1.1   thorpej }
    369       1.1   thorpej 
    370       1.1   thorpej /*****************************************************************************
    371       1.1   thorpej  * BSD <sys/extattr.h> API for file system extended attributes
    372       1.1   thorpej  *****************************************************************************/
    373       1.1   thorpej 
    374       1.1   thorpej int
    375      1.15       dsl sys_extattr_set_fd(struct lwp *l, const struct sys_extattr_set_fd_args *uap, register_t *retval)
    376       1.1   thorpej {
    377      1.15       dsl 	/* {
    378       1.1   thorpej 		syscallarg(int) fd;
    379       1.1   thorpej 		syscallarg(int) attrnamespace;
    380       1.1   thorpej 		syscallarg(const char *) attrname;
    381       1.1   thorpej 		syscallarg(const void *) data;
    382       1.1   thorpej 		syscallarg(size_t) nbytes;
    383      1.15       dsl 	} */
    384       1.1   thorpej 	struct file *fp;
    385       1.1   thorpej 	struct vnode *vp;
    386       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    387       1.1   thorpej 	int error;
    388       1.1   thorpej 
    389       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    390       1.1   thorpej 	    NULL);
    391       1.1   thorpej 	if (error)
    392       1.1   thorpej 		return (error);
    393       1.1   thorpej 
    394      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    395       1.1   thorpej 	if (error)
    396       1.1   thorpej 		return (error);
    397       1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    398       1.1   thorpej 
    399       1.1   thorpej 	error = extattr_set_vp(vp, SCARG(uap, attrnamespace), attrname,
    400       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    401       1.1   thorpej 
    402      1.17        ad 	fd_putfile(SCARG(uap, fd));
    403       1.1   thorpej 	return (error);
    404       1.1   thorpej }
    405       1.1   thorpej 
    406       1.1   thorpej int
    407      1.15       dsl sys_extattr_set_file(struct lwp *l, const struct sys_extattr_set_file_args *uap, register_t *retval)
    408       1.1   thorpej {
    409      1.15       dsl 	/* {
    410       1.1   thorpej 		syscallarg(const char *) path;
    411       1.1   thorpej 		syscallarg(int) attrnamespace;
    412       1.1   thorpej 		syscallarg(const char *) attrname;
    413       1.1   thorpej 		syscallarg(const void *) data;
    414       1.1   thorpej 		syscallarg(size_t) nbytes;
    415      1.15       dsl 	} */
    416       1.1   thorpej 	struct nameidata nd;
    417       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    418       1.1   thorpej 	int error;
    419       1.1   thorpej 
    420       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    421       1.1   thorpej 	    NULL);
    422       1.1   thorpej 	if (error)
    423       1.1   thorpej 		return (error);
    424       1.1   thorpej 
    425      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    426       1.1   thorpej 	error = namei(&nd);
    427       1.1   thorpej 	if (error)
    428       1.1   thorpej 		return (error);
    429       1.1   thorpej 
    430       1.1   thorpej 	error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
    431       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    432       1.1   thorpej 
    433       1.1   thorpej 	vrele(nd.ni_vp);
    434       1.1   thorpej 	return (error);
    435       1.1   thorpej }
    436       1.1   thorpej 
    437       1.1   thorpej int
    438      1.15       dsl sys_extattr_set_link(struct lwp *l, const struct sys_extattr_set_link_args *uap, register_t *retval)
    439       1.1   thorpej {
    440      1.15       dsl 	/* {
    441       1.1   thorpej 		syscallarg(const char *) path;
    442       1.1   thorpej 		syscallarg(int) attrnamespace;
    443       1.1   thorpej 		syscallarg(const char *) attrname;
    444       1.1   thorpej 		syscallarg(const void *) data;
    445       1.1   thorpej 		syscallarg(size_t) nbytes;
    446      1.15       dsl 	} */
    447       1.1   thorpej 	struct nameidata nd;
    448       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    449       1.1   thorpej 	int error;
    450       1.1   thorpej 
    451       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    452       1.1   thorpej 	    NULL);
    453       1.1   thorpej 	if (error)
    454       1.1   thorpej 		return (error);
    455       1.1   thorpej 
    456      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    457       1.1   thorpej 	error = namei(&nd);
    458       1.1   thorpej 	if (error)
    459       1.1   thorpej 		return (error);
    460       1.1   thorpej 
    461       1.1   thorpej 	error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
    462       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    463       1.1   thorpej 
    464       1.1   thorpej 	vrele(nd.ni_vp);
    465       1.1   thorpej 	return (error);
    466       1.1   thorpej }
    467       1.1   thorpej 
    468       1.1   thorpej int
    469      1.15       dsl sys_extattr_get_fd(struct lwp *l, const struct sys_extattr_get_fd_args *uap, register_t *retval)
    470       1.1   thorpej {
    471      1.15       dsl 	/* {
    472       1.1   thorpej 		syscallarg(int) fd;
    473       1.1   thorpej 		syscallarg(int) attrnamespace;
    474       1.1   thorpej 		syscallarg(const char *) attrname;
    475       1.1   thorpej 		syscallarg(void *) data;
    476       1.1   thorpej 		syscallarg(size_t) nbytes;
    477      1.15       dsl 	} */
    478       1.1   thorpej 	struct file *fp;
    479       1.1   thorpej 	struct vnode *vp;
    480       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    481       1.1   thorpej 	int error;
    482       1.1   thorpej 
    483       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    484       1.1   thorpej 	    NULL);
    485       1.1   thorpej 	if (error)
    486       1.1   thorpej 		return (error);
    487       1.1   thorpej 
    488      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    489       1.1   thorpej 	if (error)
    490       1.1   thorpej 		return (error);
    491       1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    492       1.1   thorpej 
    493       1.1   thorpej 	error = extattr_get_vp(vp, SCARG(uap, attrnamespace), attrname,
    494       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    495       1.1   thorpej 
    496      1.17        ad 	fd_putfile(SCARG(uap, fd));
    497       1.1   thorpej 	return (error);
    498       1.1   thorpej }
    499       1.1   thorpej 
    500       1.1   thorpej int
    501      1.15       dsl sys_extattr_get_file(struct lwp *l, const struct sys_extattr_get_file_args *uap, register_t *retval)
    502       1.1   thorpej {
    503      1.15       dsl 	/* {
    504       1.1   thorpej 		syscallarg(const char *) path;
    505       1.1   thorpej 		syscallarg(int) attrnamespace;
    506       1.1   thorpej 		syscallarg(const char *) attrname;
    507       1.1   thorpej 		syscallarg(void *) data;
    508       1.1   thorpej 		syscallarg(size_t) nbytes;
    509      1.15       dsl 	} */
    510       1.1   thorpej 	struct nameidata nd;
    511       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    512       1.1   thorpej 	int error;
    513       1.1   thorpej 
    514       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    515       1.1   thorpej 	    NULL);
    516       1.1   thorpej 	if (error)
    517       1.1   thorpej 		return (error);
    518       1.1   thorpej 
    519      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    520       1.1   thorpej 	error = namei(&nd);
    521       1.1   thorpej 	if (error)
    522       1.1   thorpej 		return (error);
    523       1.1   thorpej 
    524       1.1   thorpej 	error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
    525       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    526       1.1   thorpej 
    527       1.1   thorpej 	vrele(nd.ni_vp);
    528       1.1   thorpej 	return (error);
    529       1.1   thorpej }
    530       1.1   thorpej 
    531       1.1   thorpej int
    532      1.15       dsl sys_extattr_get_link(struct lwp *l, const struct sys_extattr_get_link_args *uap, register_t *retval)
    533       1.1   thorpej {
    534      1.15       dsl 	/* {
    535       1.1   thorpej 		syscallarg(const char *) path;
    536       1.1   thorpej 		syscallarg(int) attrnamespace;
    537       1.1   thorpej 		syscallarg(const char *) attrname;
    538       1.1   thorpej 		syscallarg(void *) data;
    539       1.1   thorpej 		syscallarg(size_t) nbytes;
    540      1.15       dsl 	} */
    541       1.1   thorpej 	struct nameidata nd;
    542       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    543       1.1   thorpej 	int error;
    544       1.1   thorpej 
    545       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    546       1.1   thorpej 	    NULL);
    547       1.1   thorpej 	if (error)
    548       1.1   thorpej 		return (error);
    549       1.1   thorpej 
    550      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    551       1.1   thorpej 	error = namei(&nd);
    552       1.1   thorpej 	if (error)
    553       1.1   thorpej 		return (error);
    554       1.1   thorpej 
    555       1.1   thorpej 	error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
    556       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    557       1.1   thorpej 
    558       1.1   thorpej 	vrele(nd.ni_vp);
    559       1.1   thorpej 	return (error);
    560       1.1   thorpej }
    561       1.1   thorpej 
    562       1.1   thorpej int
    563      1.15       dsl sys_extattr_delete_fd(struct lwp *l, const struct sys_extattr_delete_fd_args *uap, register_t *retval)
    564       1.1   thorpej {
    565      1.15       dsl 	/* {
    566       1.1   thorpej 		syscallarg(int) fd;
    567       1.1   thorpej 		syscallarg(int) attrnamespace;
    568       1.1   thorpej 		syscallarg(const char *) attrname;
    569      1.15       dsl 	} */
    570       1.1   thorpej 	struct file *fp;
    571       1.1   thorpej 	struct vnode *vp;
    572       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    573       1.1   thorpej 	int error;
    574       1.1   thorpej 
    575       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    576       1.1   thorpej 	    NULL);
    577       1.1   thorpej 	if (error)
    578       1.1   thorpej 		return (error);
    579       1.1   thorpej 
    580      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    581       1.1   thorpej 	if (error)
    582       1.1   thorpej 		return (error);
    583       1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    584       1.1   thorpej 
    585       1.4  christos 	error = extattr_delete_vp(vp, SCARG(uap, attrnamespace), attrname, l);
    586       1.1   thorpej 
    587      1.17        ad 	fd_putfile(SCARG(uap, fd));
    588       1.1   thorpej 	return (error);
    589       1.1   thorpej }
    590       1.1   thorpej 
    591       1.1   thorpej int
    592      1.15       dsl sys_extattr_delete_file(struct lwp *l, const struct sys_extattr_delete_file_args *uap, register_t *retval)
    593       1.1   thorpej {
    594      1.15       dsl 	/* {
    595       1.1   thorpej 		syscallarg(const char *) path;
    596       1.1   thorpej 		syscallarg(int) attrnamespace;
    597       1.1   thorpej 		syscallarg(const char *) attrname;
    598      1.15       dsl 	} */
    599       1.1   thorpej 	struct nameidata nd;
    600       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    601       1.1   thorpej 	int error;
    602       1.1   thorpej 
    603       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    604       1.1   thorpej 	    NULL);
    605       1.1   thorpej 	if (error)
    606       1.1   thorpej 		return (error);
    607       1.1   thorpej 
    608      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    609       1.1   thorpej 	error = namei(&nd);
    610       1.1   thorpej 	if (error)
    611       1.1   thorpej 		return (error);
    612       1.1   thorpej 
    613       1.1   thorpej 	error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
    614       1.4  christos 	    l);
    615       1.1   thorpej 
    616       1.1   thorpej 	vrele(nd.ni_vp);
    617       1.1   thorpej 	return (error);
    618       1.1   thorpej }
    619       1.1   thorpej 
    620       1.1   thorpej int
    621      1.15       dsl sys_extattr_delete_link(struct lwp *l, const struct sys_extattr_delete_link_args *uap, register_t *retval)
    622       1.1   thorpej {
    623      1.15       dsl 	/* {
    624       1.1   thorpej 		syscallarg(const char *) path;
    625       1.1   thorpej 		syscallarg(int) attrnamespace;
    626       1.1   thorpej 		syscallarg(const char *) attrname;
    627      1.15       dsl 	} */
    628       1.1   thorpej 	struct nameidata nd;
    629       1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    630       1.1   thorpej 	int error;
    631       1.1   thorpej 
    632       1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    633       1.1   thorpej 	    NULL);
    634       1.1   thorpej 	if (error)
    635       1.1   thorpej 		return (error);
    636       1.1   thorpej 
    637      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    638       1.1   thorpej 	error = namei(&nd);
    639       1.1   thorpej 	if (error)
    640       1.1   thorpej 		return (error);
    641       1.1   thorpej 
    642       1.1   thorpej 	error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
    643       1.4  christos 	    l);
    644       1.1   thorpej 
    645       1.1   thorpej 	vrele(nd.ni_vp);
    646       1.1   thorpej 	return (error);
    647       1.1   thorpej }
    648       1.1   thorpej 
    649       1.1   thorpej int
    650      1.15       dsl sys_extattr_list_fd(struct lwp *l, const struct sys_extattr_list_fd_args *uap, register_t *retval)
    651       1.1   thorpej {
    652      1.15       dsl 	/* {
    653       1.1   thorpej 		syscallarg(int) fd;
    654       1.1   thorpej 		syscallarg(int) attrnamespace;
    655       1.1   thorpej 		syscallarg(void *) data;
    656       1.1   thorpej 		syscallarg(size_t) nbytes;
    657      1.15       dsl 	} */
    658       1.1   thorpej 	struct file *fp;
    659       1.1   thorpej 	struct vnode *vp;
    660       1.1   thorpej 	int error;
    661       1.1   thorpej 
    662      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    663       1.1   thorpej 	if (error)
    664       1.1   thorpej 		return (error);
    665       1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    666       1.1   thorpej 
    667       1.1   thorpej 	error = extattr_list_vp(vp, SCARG(uap, attrnamespace),
    668       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    669       1.1   thorpej 
    670      1.17        ad 	fd_putfile(SCARG(uap, fd));
    671       1.1   thorpej 	return (error);
    672       1.1   thorpej }
    673       1.1   thorpej 
    674       1.1   thorpej int
    675      1.15       dsl sys_extattr_list_file(struct lwp *l, const struct sys_extattr_list_file_args *uap, register_t *retval)
    676       1.1   thorpej {
    677      1.15       dsl 	/* {
    678       1.1   thorpej 		syscallarg(const char *) path;
    679       1.1   thorpej 		syscallarg(int) attrnamespace;
    680       1.1   thorpej 		syscallarg(void *) data;
    681       1.1   thorpej 		syscallarg(size_t) nbytes;
    682      1.15       dsl 	} */
    683       1.1   thorpej 	struct nameidata nd;
    684       1.1   thorpej 	int error;
    685       1.1   thorpej 
    686      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    687       1.1   thorpej 	error = namei(&nd);
    688       1.1   thorpej 	if (error)
    689       1.1   thorpej 		return (error);
    690       1.1   thorpej 
    691       1.1   thorpej 	error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
    692       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    693       1.1   thorpej 
    694       1.1   thorpej 	vrele(nd.ni_vp);
    695       1.1   thorpej 	return (error);
    696       1.1   thorpej }
    697       1.1   thorpej 
    698       1.1   thorpej int
    699      1.15       dsl sys_extattr_list_link(struct lwp *l, const struct sys_extattr_list_link_args *uap, register_t *retval)
    700       1.1   thorpej {
    701      1.15       dsl 	/* {
    702       1.1   thorpej 		syscallarg(const char *) path;
    703       1.1   thorpej 		syscallarg(int) attrnamespace;
    704       1.1   thorpej 		syscallarg(void *) data;
    705       1.1   thorpej 		syscallarg(size_t) nbytes;
    706      1.15       dsl 	} */
    707       1.1   thorpej 	struct nameidata nd;
    708       1.1   thorpej 	int error;
    709       1.1   thorpej 
    710      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    711       1.1   thorpej 	error = namei(&nd);
    712       1.1   thorpej 	if (error)
    713       1.1   thorpej 		return (error);
    714       1.1   thorpej 
    715       1.1   thorpej 	error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
    716       1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    717       1.1   thorpej 
    718       1.1   thorpej 	vrele(nd.ni_vp);
    719       1.1   thorpej 	return (error);
    720       1.1   thorpej }
    721       1.2   thorpej 
    722       1.2   thorpej /*****************************************************************************
    723       1.2   thorpej  * Linux-compatible <sys/xattr.h> API for file system extended attributes
    724       1.2   thorpej  *****************************************************************************/
    725       1.2   thorpej 
    726       1.2   thorpej int
    727      1.15       dsl sys_setxattr(struct lwp *l, const struct sys_setxattr_args *uap, register_t *retval)
    728       1.2   thorpej {
    729      1.15       dsl 	/* {
    730       1.2   thorpej 		syscallarg(const char *) path;
    731       1.2   thorpej 		syscallarg(const char *) name;
    732       1.2   thorpej 		syscallarg(void *) value;
    733       1.2   thorpej 		syscallarg(size_t) size;
    734       1.2   thorpej 		syscallarg(int) flags;
    735      1.15       dsl 	} */
    736       1.2   thorpej 	struct nameidata nd;
    737       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    738       1.2   thorpej 	int error;
    739       1.2   thorpej 
    740       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    741       1.2   thorpej 	    NULL);
    742       1.2   thorpej 	if (error)
    743       1.2   thorpej 		return (error);
    744       1.2   thorpej 
    745      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    746       1.2   thorpej 	error = namei(&nd);
    747       1.2   thorpej 	if (error)
    748       1.2   thorpej 		return (error);
    749       1.2   thorpej 
    750       1.2   thorpej 	/* XXX flags */
    751       1.2   thorpej 
    752       1.2   thorpej 	error = extattr_set_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
    753       1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    754       1.2   thorpej 
    755       1.2   thorpej 	vrele(nd.ni_vp);
    756       1.2   thorpej 	return (error);
    757       1.2   thorpej }
    758       1.2   thorpej 
    759       1.2   thorpej int
    760      1.15       dsl sys_lsetxattr(struct lwp *l, const struct sys_lsetxattr_args *uap, register_t *retval)
    761       1.2   thorpej {
    762      1.15       dsl 	/* {
    763       1.2   thorpej 		syscallarg(const char *) path;
    764       1.2   thorpej 		syscallarg(const char *) name;
    765       1.2   thorpej 		syscallarg(void *) value;
    766       1.2   thorpej 		syscallarg(size_t) size;
    767       1.2   thorpej 		syscallarg(int) flags;
    768      1.15       dsl 	} */
    769       1.2   thorpej 	struct nameidata nd;
    770       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    771       1.2   thorpej 	int error;
    772       1.2   thorpej 
    773       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    774       1.2   thorpej 	    NULL);
    775       1.2   thorpej 	if (error)
    776       1.2   thorpej 		return (error);
    777       1.2   thorpej 
    778      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    779       1.2   thorpej 	error = namei(&nd);
    780       1.2   thorpej 	if (error)
    781       1.2   thorpej 		return (error);
    782       1.2   thorpej 
    783       1.2   thorpej 	/* XXX flags */
    784       1.2   thorpej 
    785       1.2   thorpej 	error = extattr_set_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
    786       1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    787       1.2   thorpej 
    788       1.2   thorpej 	vrele(nd.ni_vp);
    789       1.2   thorpej 	return (error);
    790       1.2   thorpej }
    791       1.2   thorpej 
    792       1.2   thorpej int
    793      1.15       dsl sys_fsetxattr(struct lwp *l, const struct sys_fsetxattr_args *uap, register_t *retval)
    794       1.2   thorpej {
    795      1.15       dsl 	/* {
    796       1.2   thorpej 		syscallarg(int) fd;
    797       1.2   thorpej 		syscallarg(const char *) name;
    798       1.2   thorpej 		syscallarg(void *) value;
    799       1.2   thorpej 		syscallarg(size_t) size;
    800       1.2   thorpej 		syscallarg(int) flags;
    801      1.15       dsl 	} */
    802       1.2   thorpej 	struct file *fp;
    803       1.2   thorpej 	struct vnode *vp;
    804       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    805       1.2   thorpej 	int error;
    806       1.2   thorpej 
    807       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    808       1.2   thorpej 	    NULL);
    809       1.2   thorpej 	if (error)
    810       1.2   thorpej 		return (error);
    811       1.2   thorpej 
    812      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    813       1.2   thorpej 	if (error)
    814       1.2   thorpej 		return (error);
    815       1.2   thorpej 	vp = (struct vnode *) fp->f_data;
    816       1.2   thorpej 
    817       1.2   thorpej 	/* XXX flags */
    818       1.2   thorpej 
    819       1.2   thorpej 	error = extattr_set_vp(vp, EXTATTR_NAMESPACE_USER,
    820       1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    821       1.2   thorpej 
    822      1.17        ad 	fd_putfile(SCARG(uap, fd));
    823       1.2   thorpej 	return (error);
    824       1.2   thorpej }
    825       1.2   thorpej 
    826       1.2   thorpej int
    827      1.15       dsl sys_getxattr(struct lwp *l, const struct sys_getxattr_args *uap, register_t *retval)
    828       1.2   thorpej {
    829      1.15       dsl 	/* {
    830       1.2   thorpej 		syscallarg(const char *) path;
    831       1.2   thorpej 		syscallarg(const char *) name;
    832       1.2   thorpej 		syscallarg(void *) value;
    833       1.2   thorpej 		syscallarg(size_t) size;
    834      1.15       dsl 	} */
    835       1.2   thorpej 	struct nameidata nd;
    836       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    837       1.2   thorpej 	int error;
    838       1.2   thorpej 
    839       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    840       1.2   thorpej 	    NULL);
    841       1.2   thorpej 	if (error)
    842       1.2   thorpej 		return (error);
    843       1.2   thorpej 
    844      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    845       1.2   thorpej 	error = namei(&nd);
    846       1.2   thorpej 	if (error)
    847       1.2   thorpej 		return (error);
    848       1.2   thorpej 
    849       1.2   thorpej 	error = extattr_get_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
    850       1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    851       1.2   thorpej 
    852       1.2   thorpej 	vrele(nd.ni_vp);
    853       1.2   thorpej 	return (error);
    854       1.2   thorpej }
    855       1.2   thorpej 
    856       1.2   thorpej int
    857      1.15       dsl sys_lgetxattr(struct lwp *l, const struct sys_lgetxattr_args *uap, register_t *retval)
    858       1.2   thorpej {
    859      1.15       dsl 	/* {
    860       1.2   thorpej 		syscallarg(const char *) path;
    861       1.2   thorpej 		syscallarg(const char *) name;
    862       1.2   thorpej 		syscallarg(void *) value;
    863       1.2   thorpej 		syscallarg(size_t) size;
    864      1.15       dsl 	} */
    865       1.2   thorpej 	struct nameidata nd;
    866       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    867       1.2   thorpej 	int error;
    868       1.2   thorpej 
    869       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    870       1.2   thorpej 	    NULL);
    871       1.2   thorpej 	if (error)
    872       1.2   thorpej 		return (error);
    873       1.2   thorpej 
    874      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    875       1.2   thorpej 	error = namei(&nd);
    876       1.2   thorpej 	if (error)
    877       1.2   thorpej 		return (error);
    878       1.2   thorpej 
    879       1.2   thorpej 	error = extattr_get_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
    880       1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    881       1.2   thorpej 
    882       1.2   thorpej 	vrele(nd.ni_vp);
    883       1.2   thorpej 	return (error);
    884       1.2   thorpej }
    885       1.2   thorpej 
    886       1.2   thorpej int
    887      1.15       dsl sys_fgetxattr(struct lwp *l, const struct sys_fgetxattr_args *uap, register_t *retval)
    888       1.2   thorpej {
    889      1.15       dsl 	/* {
    890       1.2   thorpej 		syscallarg(int) fd;
    891       1.2   thorpej 		syscallarg(const char *) name;
    892       1.2   thorpej 		syscallarg(void *) value;
    893       1.2   thorpej 		syscallarg(size_t) size;
    894      1.15       dsl 	} */
    895       1.2   thorpej 	struct file *fp;
    896       1.2   thorpej 	struct vnode *vp;
    897       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    898       1.2   thorpej 	int error;
    899       1.2   thorpej 
    900       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    901       1.2   thorpej 	    NULL);
    902       1.2   thorpej 	if (error)
    903       1.2   thorpej 		return (error);
    904       1.2   thorpej 
    905      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    906       1.2   thorpej 	if (error)
    907       1.2   thorpej 		return (error);
    908       1.2   thorpej 	vp = (struct vnode *) fp->f_data;
    909       1.2   thorpej 
    910       1.2   thorpej 	error = extattr_get_vp(vp, EXTATTR_NAMESPACE_USER,
    911       1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    912       1.2   thorpej 
    913      1.17        ad 	fd_putfile(SCARG(uap, fd));
    914       1.2   thorpej 	return (error);
    915       1.2   thorpej }
    916       1.2   thorpej 
    917       1.2   thorpej int
    918      1.15       dsl sys_listxattr(struct lwp *l, const struct sys_listxattr_args *uap, register_t *retval)
    919       1.2   thorpej {
    920      1.15       dsl 	/* {
    921       1.2   thorpej 		syscallarg(const char *) path;
    922       1.2   thorpej 		syscallarg(char *) list;
    923       1.2   thorpej 		syscallarg(size_t) size;
    924      1.15       dsl 	} */
    925       1.2   thorpej 	struct nameidata nd;
    926       1.2   thorpej 	int error;
    927       1.2   thorpej 
    928      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
    929       1.2   thorpej 	error = namei(&nd);
    930       1.2   thorpej 	if (error)
    931       1.2   thorpej 		return (error);
    932       1.2   thorpej 
    933       1.2   thorpej 	error = extattr_list_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
    934       1.4  christos 	    SCARG(uap, list), SCARG(uap, size), l, retval);
    935       1.2   thorpej 
    936       1.2   thorpej 	vrele(nd.ni_vp);
    937       1.2   thorpej 	return (error);
    938       1.2   thorpej }
    939       1.2   thorpej 
    940       1.2   thorpej int
    941      1.15       dsl sys_llistxattr(struct lwp *l, const struct sys_llistxattr_args *uap, register_t *retval)
    942       1.2   thorpej {
    943      1.15       dsl 	/* {
    944       1.2   thorpej 		syscallarg(const char *) path;
    945       1.2   thorpej 		syscallarg(char *) list;
    946       1.2   thorpej 		syscallarg(size_t) size;
    947      1.15       dsl 	} */
    948       1.2   thorpej 	struct nameidata nd;
    949       1.2   thorpej 	int error;
    950       1.2   thorpej 
    951      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
    952       1.2   thorpej 	error = namei(&nd);
    953       1.2   thorpej 	if (error)
    954       1.2   thorpej 		return (error);
    955       1.2   thorpej 
    956       1.2   thorpej 	error = extattr_list_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
    957       1.4  christos 	    SCARG(uap, list), SCARG(uap, size), l, retval);
    958       1.2   thorpej 
    959       1.2   thorpej 	vrele(nd.ni_vp);
    960       1.2   thorpej 	return (error);
    961       1.2   thorpej }
    962       1.2   thorpej 
    963       1.2   thorpej int
    964      1.15       dsl sys_flistxattr(struct lwp *l, const struct sys_flistxattr_args *uap, register_t *retval)
    965       1.2   thorpej {
    966      1.15       dsl 	/* {
    967       1.2   thorpej 		syscallarg(int) fd;
    968       1.2   thorpej 		syscallarg(char *) list;
    969       1.2   thorpej 		syscallarg(size_t) size;
    970      1.15       dsl 	} */
    971       1.2   thorpej 	struct file *fp;
    972       1.2   thorpej 	struct vnode *vp;
    973       1.2   thorpej 	int error;
    974       1.2   thorpej 
    975      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
    976       1.2   thorpej 	if (error)
    977       1.2   thorpej 		return (error);
    978       1.2   thorpej 	vp = (struct vnode *) fp->f_data;
    979       1.2   thorpej 
    980       1.2   thorpej 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_USER,
    981       1.4  christos 	    SCARG(uap, list), SCARG(uap, size), l, retval);
    982       1.2   thorpej 
    983      1.17        ad 	fd_putfile(SCARG(uap, fd));
    984       1.2   thorpej 	return (error);
    985       1.2   thorpej }
    986       1.2   thorpej 
    987       1.2   thorpej int
    988      1.15       dsl sys_removexattr(struct lwp *l, const struct sys_removexattr_args *uap, register_t *retval)
    989       1.2   thorpej {
    990      1.15       dsl 	/* {
    991       1.2   thorpej 		syscallarg(const char *) path;
    992       1.2   thorpej 		syscallarg(const char *) name;
    993      1.15       dsl 	} */
    994       1.2   thorpej 	struct nameidata nd;
    995       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    996       1.2   thorpej 	int error;
    997       1.2   thorpej 
    998       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    999       1.2   thorpej 	    NULL);
   1000       1.2   thorpej 	if (error)
   1001       1.2   thorpej 		return (error);
   1002       1.2   thorpej 
   1003      1.14     pooka 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path));
   1004       1.2   thorpej 	error = namei(&nd);
   1005       1.2   thorpej 	if (error)
   1006       1.2   thorpej 		return (error);
   1007       1.2   thorpej 
   1008       1.2   thorpej 	error = extattr_delete_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
   1009       1.4  christos 	    attrname, l);
   1010       1.2   thorpej 
   1011       1.2   thorpej 	vrele(nd.ni_vp);
   1012       1.2   thorpej 	return (error);
   1013       1.2   thorpej }
   1014       1.2   thorpej 
   1015       1.2   thorpej int
   1016      1.15       dsl sys_lremovexattr(struct lwp *l, const struct sys_lremovexattr_args *uap, register_t *retval)
   1017       1.2   thorpej {
   1018      1.15       dsl 	/* {
   1019       1.2   thorpej 		syscallarg(const char *) path;
   1020       1.2   thorpej 		syscallarg(const char *) name;
   1021      1.15       dsl 	} */
   1022       1.2   thorpej 	struct nameidata nd;
   1023       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
   1024       1.2   thorpej 	int error;
   1025       1.2   thorpej 
   1026       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
   1027       1.2   thorpej 	    NULL);
   1028       1.2   thorpej 	if (error)
   1029       1.2   thorpej 		return (error);
   1030       1.2   thorpej 
   1031      1.14     pooka 	NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path));
   1032       1.2   thorpej 	error = namei(&nd);
   1033       1.2   thorpej 	if (error)
   1034       1.2   thorpej 		return (error);
   1035       1.2   thorpej 
   1036       1.2   thorpej 	error = extattr_delete_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
   1037       1.4  christos 	    attrname, l);
   1038       1.2   thorpej 
   1039       1.2   thorpej 	vrele(nd.ni_vp);
   1040       1.2   thorpej 	return (error);
   1041       1.2   thorpej }
   1042       1.2   thorpej 
   1043       1.2   thorpej int
   1044      1.15       dsl sys_fremovexattr(struct lwp *l, const struct sys_fremovexattr_args *uap, register_t *retval)
   1045       1.2   thorpej {
   1046      1.15       dsl 	/* {
   1047       1.2   thorpej 		syscallarg(int) fd;
   1048       1.2   thorpej 		syscallarg(const char *) name;
   1049      1.15       dsl 	} */
   1050       1.2   thorpej 	struct file *fp;
   1051       1.2   thorpej 	struct vnode *vp;
   1052       1.2   thorpej 	char attrname[XATTR_NAME_MAX];
   1053       1.2   thorpej 	int error;
   1054       1.2   thorpej 
   1055       1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
   1056       1.2   thorpej 	    NULL);
   1057       1.2   thorpej 	if (error)
   1058       1.2   thorpej 		return (error);
   1059       1.2   thorpej 
   1060      1.17        ad 	error = getvnode(SCARG(uap, fd), &fp);
   1061       1.2   thorpej 	if (error)
   1062       1.2   thorpej 		return (error);
   1063       1.2   thorpej 	vp = (struct vnode *) fp->f_data;
   1064       1.2   thorpej 
   1065       1.2   thorpej 	error = extattr_delete_vp(vp, EXTATTR_NAMESPACE_USER,
   1066       1.4  christos 	    attrname, l);
   1067       1.2   thorpej 
   1068      1.17        ad 	fd_putfile(SCARG(uap, fd));
   1069       1.2   thorpej 	return (error);
   1070       1.2   thorpej }
   1071