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vfs_xattr.c revision 1.29
      1  1.29  drochner /*	$NetBSD: vfs_xattr.c,v 1.29 2011/11/09 18:29:28 drochner 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  1.29  drochner __KERNEL_RCSID(0, "$NetBSD: vfs_xattr.c,v 1.29 2011/11/09 18:29:28 drochner 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  1.28      manu #include <sys/ktrace.h>
     89   1.1   thorpej 
     90   1.1   thorpej /*
     91   1.3   thorpej  * Credential check based on process requesting service, and per-attribute
     92   1.3   thorpej  * permissions.
     93   1.3   thorpej  *
     94   1.3   thorpej  * NOTE: Vnode must be locked.
     95   1.3   thorpej  */
     96   1.3   thorpej int
     97   1.3   thorpej extattr_check_cred(struct vnode *vp, int attrnamespace,
     98   1.6      elad     kauth_cred_t cred, struct lwp *l, int access)
     99   1.3   thorpej {
    100   1.3   thorpej 
    101   1.3   thorpej 	if (cred == NOCRED)
    102   1.3   thorpej 		return (0);
    103   1.3   thorpej 
    104   1.3   thorpej 	switch (attrnamespace) {
    105   1.3   thorpej 	case EXTATTR_NAMESPACE_SYSTEM:
    106   1.3   thorpej 		/*
    107   1.3   thorpej 		 * Do we really want to allow this, or just require that
    108   1.3   thorpej 		 * these requests come from kernel code (NOCRED case above)?
    109   1.3   thorpej 		 */
    110   1.6      elad 		return (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER,
    111  1.10      elad 		    NULL));
    112   1.3   thorpej 
    113   1.3   thorpej 	case EXTATTR_NAMESPACE_USER:
    114  1.13     pooka 		return (VOP_ACCESS(vp, access, cred));
    115   1.3   thorpej 
    116   1.3   thorpej 	default:
    117   1.3   thorpej 		return (EPERM);
    118   1.3   thorpej 	}
    119   1.3   thorpej }
    120   1.3   thorpej 
    121   1.3   thorpej /*
    122   1.3   thorpej  * Default vfs_extattrctl routine for file systems that do not support
    123   1.3   thorpej  * it.
    124   1.3   thorpej  */
    125   1.3   thorpej /*ARGSUSED*/
    126   1.3   thorpej int
    127   1.9      yamt vfs_stdextattrctl(struct mount *mp, int cmt, struct vnode *vp,
    128  1.13     pooka     int attrnamespace, const char *attrname)
    129   1.3   thorpej {
    130   1.3   thorpej 
    131   1.3   thorpej 	if (vp != NULL)
    132  1.22   hannken 		VOP_UNLOCK(vp);
    133   1.3   thorpej 	return (EOPNOTSUPP);
    134   1.3   thorpej }
    135   1.3   thorpej 
    136   1.3   thorpej /*
    137   1.2   thorpej  * Push extended attribute configuration information into the file
    138   1.2   thorpej  * system.
    139   1.1   thorpej  *
    140   1.1   thorpej  * NOTE: Not all file systems that support extended attributes will
    141   1.1   thorpej  * require the use of this system call.
    142   1.1   thorpej  */
    143   1.1   thorpej int
    144  1.15       dsl sys_extattrctl(struct lwp *l, const struct sys_extattrctl_args *uap, register_t *retval)
    145   1.1   thorpej {
    146  1.15       dsl 	/* {
    147   1.1   thorpej 		syscallarg(const char *) path;
    148   1.1   thorpej 		syscallarg(int) cmd;
    149   1.1   thorpej 		syscallarg(const char *) filename;
    150   1.1   thorpej 		syscallarg(int) attrnamespace;
    151   1.1   thorpej 		syscallarg(const char *) attrname;
    152  1.15       dsl 	} */
    153  1.20  dholland 	struct vnode *path_vp, *file_vp;
    154  1.23  dholland 	struct pathbuf *file_pb;
    155  1.20  dholland 	struct nameidata file_nd;
    156   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    157   1.1   thorpej 	int error;
    158   1.1   thorpej 
    159   1.1   thorpej 	if (SCARG(uap, attrname) != NULL) {
    160   1.1   thorpej 		error = copyinstr(SCARG(uap, attrname), attrname,
    161   1.1   thorpej 		    sizeof(attrname), NULL);
    162   1.1   thorpej 		if (error)
    163   1.1   thorpej 			return (error);
    164   1.1   thorpej 	}
    165   1.1   thorpej 
    166  1.21     pooka 	error = namei_simple_user(SCARG(uap, path),
    167  1.21     pooka 				NSM_FOLLOW_NOEMULROOT, &path_vp);
    168  1.21     pooka 	if (error) {
    169  1.21     pooka 		return (error);
    170  1.21     pooka 	}
    171  1.21     pooka 
    172  1.20  dholland 	file_vp = NULL;
    173   1.1   thorpej 	if (SCARG(uap, filename) != NULL) {
    174  1.23  dholland 		error = pathbuf_copyin(SCARG(uap, filename), &file_pb);
    175  1.23  dholland 		if (error) {
    176  1.23  dholland 			vrele(path_vp);
    177  1.23  dholland 			return (error);
    178  1.23  dholland 		}
    179  1.23  dholland 		NDINIT(&file_nd, LOOKUP, FOLLOW | LOCKLEAF, file_pb);
    180  1.20  dholland 		error = namei(&file_nd);
    181  1.21     pooka 		if (error) {
    182  1.23  dholland 			pathbuf_destroy(file_pb);
    183  1.21     pooka 			vrele(path_vp);
    184   1.1   thorpej 			return (error);
    185  1.21     pooka 		}
    186  1.20  dholland 		file_vp = file_nd.ni_vp;
    187  1.23  dholland 		pathbuf_destroy(file_pb);
    188   1.1   thorpej 	}
    189   1.1   thorpej 
    190  1.20  dholland 	error = VFS_EXTATTRCTL(path_vp->v_mount, SCARG(uap, cmd), file_vp,
    191   1.1   thorpej 	    SCARG(uap, attrnamespace),
    192  1.13     pooka 	    SCARG(uap, attrname) != NULL ? attrname : NULL);
    193   1.1   thorpej 
    194  1.20  dholland 	if (file_vp != NULL)
    195  1.20  dholland 		vrele(file_vp);
    196  1.20  dholland 	vrele(path_vp);
    197   1.1   thorpej 
    198   1.1   thorpej 	return (error);
    199   1.1   thorpej }
    200   1.1   thorpej 
    201   1.1   thorpej /*****************************************************************************
    202   1.1   thorpej  * Internal routines to manipulate file system extended attributes:
    203   1.1   thorpej  *	- set
    204   1.1   thorpej  *	- get
    205   1.1   thorpej  *	- delete
    206   1.1   thorpej  *	- list
    207   1.1   thorpej  *****************************************************************************/
    208   1.1   thorpej 
    209   1.1   thorpej /*
    210   1.1   thorpej  * extattr_set_vp:
    211   1.1   thorpej  *
    212   1.1   thorpej  *	Set a named extended attribute on a file or directory.
    213   1.1   thorpej  */
    214   1.1   thorpej static int
    215   1.1   thorpej extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
    216  1.24      manu     const void *data, size_t nbytes, struct lwp *l, register_t *retval,
    217  1.24      manu     int flag)
    218   1.1   thorpej {
    219   1.1   thorpej 	struct uio auio;
    220   1.1   thorpej 	struct iovec aiov;
    221   1.1   thorpej 	ssize_t cnt;
    222   1.1   thorpej 	int error;
    223   1.1   thorpej 
    224   1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    225   1.1   thorpej 
    226  1.24      manu 	if (flag) {
    227  1.24      manu 		size_t attrlen;
    228  1.24      manu 
    229  1.24      manu 		error = VOP_GETEXTATTR(vp, attrnamespace, attrname, NULL,
    230  1.24      manu 				       &attrlen, l->l_cred);
    231  1.24      manu 
    232  1.24      manu 		switch (error) {
    233  1.24      manu 		case ENOATTR:
    234  1.24      manu 			if (flag & XATTR_REPLACE)
    235  1.24      manu 				goto done;
    236  1.24      manu 			break;
    237  1.24      manu 		case 0:
    238  1.24      manu 			if (flag & XATTR_CREATE) {
    239  1.24      manu 				error = EEXIST;
    240  1.24      manu 				goto done;
    241  1.24      manu 			}
    242  1.24      manu 			break;
    243  1.24      manu 		default:
    244  1.24      manu 			goto done;
    245  1.24      manu 			break;
    246  1.24      manu 		}
    247  1.24      manu 	}
    248  1.24      manu 
    249   1.1   thorpej 	aiov.iov_base = __UNCONST(data);	/* XXXUNCONST kills const */
    250   1.1   thorpej 	aiov.iov_len = nbytes;
    251   1.1   thorpej 	auio.uio_iov = &aiov;
    252   1.1   thorpej 	auio.uio_iovcnt = 1;
    253   1.1   thorpej 	auio.uio_offset = 0;
    254   1.1   thorpej 	if (nbytes > INT_MAX) {
    255   1.1   thorpej 		error = EINVAL;
    256   1.1   thorpej 		goto done;
    257   1.1   thorpej 	}
    258   1.1   thorpej 	auio.uio_resid = nbytes;
    259   1.1   thorpej 	auio.uio_rw = UIO_WRITE;
    260   1.5      yamt 	KASSERT(l == curlwp);
    261   1.5      yamt 	auio.uio_vmspace = l->l_proc->p_vmspace;
    262   1.1   thorpej 	cnt = nbytes;
    263   1.1   thorpej 
    264  1.28      manu 	ktrkuser("xattr-name", (void *)__UNCONST(attrname), strlen(attrname));
    265  1.28      manu 	ktrkuser("xattr-val", __UNCONST(data), nbytes);
    266  1.28      manu 
    267  1.13     pooka 	error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio, l->l_cred);
    268   1.1   thorpej 	cnt -= auio.uio_resid;
    269   1.1   thorpej 	retval[0] = cnt;
    270   1.1   thorpej 
    271   1.1   thorpej  done:
    272  1.22   hannken 	VOP_UNLOCK(vp);
    273   1.1   thorpej 	return (error);
    274   1.1   thorpej }
    275   1.1   thorpej 
    276   1.1   thorpej /*
    277   1.1   thorpej  * extattr_get_vp:
    278   1.1   thorpej  *
    279   1.1   thorpej  *	Get a named extended attribute on a file or directory.
    280   1.1   thorpej  */
    281   1.1   thorpej static int
    282   1.1   thorpej extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
    283   1.4  christos     void *data, size_t nbytes, struct lwp *l, register_t *retval)
    284   1.1   thorpej {
    285   1.1   thorpej 	struct uio auio, *auiop;
    286   1.1   thorpej 	struct iovec aiov;
    287   1.1   thorpej 	ssize_t cnt;
    288   1.1   thorpej 	size_t size, *sizep;
    289   1.1   thorpej 	int error;
    290   1.1   thorpej 
    291   1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    292   1.1   thorpej 
    293   1.1   thorpej 	/*
    294   1.1   thorpej 	 * Slightly unusual semantics: if the user provides a NULL data
    295   1.1   thorpej 	 * pointer, they don't want to receive the data, just the maximum
    296   1.1   thorpej 	 * read length.
    297   1.1   thorpej 	 */
    298   1.1   thorpej 	auiop = NULL;
    299   1.1   thorpej 	sizep = NULL;
    300   1.1   thorpej 	cnt = 0;
    301   1.1   thorpej 	if (data != NULL) {
    302   1.1   thorpej 		aiov.iov_base = data;
    303   1.1   thorpej 		aiov.iov_len = nbytes;
    304   1.1   thorpej 		auio.uio_iov = &aiov;
    305   1.1   thorpej 		auio.uio_offset = 0;
    306   1.1   thorpej 		if (nbytes > INT_MAX) {
    307   1.1   thorpej 			error = EINVAL;
    308   1.1   thorpej 			goto done;
    309   1.1   thorpej 		}
    310   1.1   thorpej 		auio.uio_resid = nbytes;
    311   1.1   thorpej 		auio.uio_rw = UIO_READ;
    312   1.5      yamt 		KASSERT(l == curlwp);
    313   1.5      yamt 		auio.uio_vmspace = l->l_proc->p_vmspace;
    314   1.1   thorpej 		auiop = &auio;
    315   1.1   thorpej 		cnt = nbytes;
    316   1.1   thorpej 	} else
    317   1.1   thorpej 		sizep = &size;
    318   1.1   thorpej 
    319  1.28      manu 	ktrkuser("xattr-name", (void *)__UNCONST(attrname), strlen(attrname));
    320  1.28      manu 
    321   1.1   thorpej 	error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
    322  1.13     pooka 	    l->l_cred);
    323   1.1   thorpej 
    324   1.1   thorpej 	if (auiop != NULL) {
    325   1.1   thorpej 		cnt -= auio.uio_resid;
    326   1.1   thorpej 		retval[0] = cnt;
    327  1.28      manu 
    328  1.28      manu 		ktrkuser("xattr-val", data, cnt);
    329   1.1   thorpej 	} else
    330   1.1   thorpej 		retval[0] = size;
    331   1.1   thorpej 
    332   1.1   thorpej  done:
    333  1.22   hannken 	VOP_UNLOCK(vp);
    334   1.1   thorpej 	return (error);
    335   1.1   thorpej }
    336   1.1   thorpej 
    337   1.1   thorpej /*
    338   1.1   thorpej  * extattr_delete_vp:
    339   1.1   thorpej  *
    340   1.1   thorpej  *	Delete a named extended attribute on a file or directory.
    341   1.1   thorpej  */
    342   1.1   thorpej static int
    343   1.1   thorpej extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
    344   1.4  christos     struct lwp *l)
    345   1.1   thorpej {
    346   1.1   thorpej 	int error;
    347   1.1   thorpej 
    348   1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    349   1.1   thorpej 
    350  1.28      manu 	ktrkuser("xattr-name", (void *)__UNCONST(attrname), strlen(attrname));
    351  1.28      manu 
    352  1.13     pooka 	error = VOP_DELETEEXTATTR(vp, attrnamespace, attrname, l->l_cred);
    353   1.1   thorpej 	if (error == EOPNOTSUPP)
    354   1.1   thorpej 		error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
    355  1.13     pooka 		    l->l_cred);
    356   1.1   thorpej 
    357  1.22   hannken 	VOP_UNLOCK(vp);
    358   1.1   thorpej 	return (error);
    359   1.1   thorpej }
    360   1.1   thorpej 
    361   1.1   thorpej /*
    362   1.1   thorpej  * extattr_list_vp:
    363   1.1   thorpej  *
    364   1.1   thorpej  *	Retrieve a list of extended attributes on a file or directory.
    365   1.1   thorpej  */
    366   1.1   thorpej static int
    367   1.1   thorpej extattr_list_vp(struct vnode *vp, int attrnamespace, void *data, size_t nbytes,
    368  1.27      manu     int flag, struct lwp *l, register_t *retval)
    369   1.1   thorpej {
    370   1.1   thorpej 	struct uio auio, *auiop;
    371   1.1   thorpej 	size_t size, *sizep;
    372   1.1   thorpej 	struct iovec aiov;
    373   1.1   thorpej 	ssize_t cnt;
    374   1.1   thorpej 	int error;
    375   1.1   thorpej 
    376   1.1   thorpej 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
    377   1.1   thorpej 
    378   1.1   thorpej 	auiop = NULL;
    379   1.1   thorpej 	sizep = NULL;
    380   1.1   thorpej 	cnt = 0;
    381   1.1   thorpej 	if (data != NULL) {
    382   1.1   thorpej 		aiov.iov_base = data;
    383   1.1   thorpej 		aiov.iov_len = nbytes;
    384   1.1   thorpej 		auio.uio_iov = &aiov;
    385   1.1   thorpej 		auio.uio_offset = 0;
    386   1.1   thorpej 		if (nbytes > INT_MAX) {
    387   1.1   thorpej 			error = EINVAL;
    388   1.1   thorpej 			goto done;
    389   1.1   thorpej 		}
    390   1.1   thorpej 		auio.uio_resid = nbytes;
    391   1.1   thorpej 		auio.uio_rw = UIO_READ;
    392   1.5      yamt 		KASSERT(l == curlwp);
    393   1.5      yamt 		auio.uio_vmspace = l->l_proc->p_vmspace;
    394   1.1   thorpej 		auiop = &auio;
    395   1.1   thorpej 		cnt = nbytes;
    396   1.1   thorpej 	} else
    397   1.1   thorpej 		sizep = &size;
    398   1.1   thorpej 
    399  1.27      manu 	error = VOP_LISTEXTATTR(vp, attrnamespace, auiop, sizep,
    400  1.27      manu 				flag, l->l_cred);
    401   1.1   thorpej 
    402   1.1   thorpej 	if (auiop != NULL) {
    403   1.1   thorpej 		cnt -= auio.uio_resid;
    404   1.1   thorpej 		retval[0] = cnt;
    405  1.28      manu 
    406  1.28      manu 		ktrkuser("xattr-list", data, cnt);
    407   1.1   thorpej 	} else
    408   1.1   thorpej 		retval[0] = size;
    409   1.1   thorpej 
    410   1.1   thorpej  done:
    411  1.22   hannken 	VOP_UNLOCK(vp);
    412   1.1   thorpej 	return (error);
    413   1.1   thorpej }
    414   1.1   thorpej 
    415   1.1   thorpej /*****************************************************************************
    416   1.1   thorpej  * BSD <sys/extattr.h> API for file system extended attributes
    417   1.1   thorpej  *****************************************************************************/
    418   1.1   thorpej 
    419   1.1   thorpej int
    420  1.15       dsl sys_extattr_set_fd(struct lwp *l, const struct sys_extattr_set_fd_args *uap, register_t *retval)
    421   1.1   thorpej {
    422  1.15       dsl 	/* {
    423   1.1   thorpej 		syscallarg(int) fd;
    424   1.1   thorpej 		syscallarg(int) attrnamespace;
    425   1.1   thorpej 		syscallarg(const char *) attrname;
    426   1.1   thorpej 		syscallarg(const void *) data;
    427   1.1   thorpej 		syscallarg(size_t) nbytes;
    428  1.15       dsl 	} */
    429   1.1   thorpej 	struct file *fp;
    430   1.1   thorpej 	struct vnode *vp;
    431   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    432   1.1   thorpej 	int error;
    433   1.1   thorpej 
    434   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    435   1.1   thorpej 	    NULL);
    436   1.1   thorpej 	if (error)
    437   1.1   thorpej 		return (error);
    438   1.1   thorpej 
    439  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
    440   1.1   thorpej 	if (error)
    441   1.1   thorpej 		return (error);
    442   1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    443   1.1   thorpej 
    444   1.1   thorpej 	error = extattr_set_vp(vp, SCARG(uap, attrnamespace), attrname,
    445  1.24      manu 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval, 0);
    446   1.1   thorpej 
    447  1.17        ad 	fd_putfile(SCARG(uap, fd));
    448   1.1   thorpej 	return (error);
    449   1.1   thorpej }
    450   1.1   thorpej 
    451   1.1   thorpej int
    452  1.15       dsl sys_extattr_set_file(struct lwp *l, const struct sys_extattr_set_file_args *uap, register_t *retval)
    453   1.1   thorpej {
    454  1.15       dsl 	/* {
    455   1.1   thorpej 		syscallarg(const char *) path;
    456   1.1   thorpej 		syscallarg(int) attrnamespace;
    457   1.1   thorpej 		syscallarg(const char *) attrname;
    458   1.1   thorpej 		syscallarg(const void *) data;
    459   1.1   thorpej 		syscallarg(size_t) nbytes;
    460  1.15       dsl 	} */
    461  1.20  dholland 	struct vnode *vp;
    462   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    463   1.1   thorpej 	int error;
    464   1.1   thorpej 
    465   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    466   1.1   thorpej 	    NULL);
    467   1.1   thorpej 	if (error)
    468   1.1   thorpej 		return (error);
    469   1.1   thorpej 
    470  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    471  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
    472   1.1   thorpej 	if (error)
    473   1.1   thorpej 		return (error);
    474   1.1   thorpej 
    475  1.20  dholland 	error = extattr_set_vp(vp, SCARG(uap, attrnamespace), attrname,
    476  1.24      manu 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval, 0);
    477   1.1   thorpej 
    478  1.20  dholland 	vrele(vp);
    479   1.1   thorpej 	return (error);
    480   1.1   thorpej }
    481   1.1   thorpej 
    482   1.1   thorpej int
    483  1.15       dsl sys_extattr_set_link(struct lwp *l, const struct sys_extattr_set_link_args *uap, register_t *retval)
    484   1.1   thorpej {
    485  1.15       dsl 	/* {
    486   1.1   thorpej 		syscallarg(const char *) path;
    487   1.1   thorpej 		syscallarg(int) attrnamespace;
    488   1.1   thorpej 		syscallarg(const char *) attrname;
    489   1.1   thorpej 		syscallarg(const void *) data;
    490   1.1   thorpej 		syscallarg(size_t) nbytes;
    491  1.15       dsl 	} */
    492  1.20  dholland 	struct vnode *vp;
    493   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    494   1.1   thorpej 	int error;
    495   1.1   thorpej 
    496   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    497   1.1   thorpej 	    NULL);
    498   1.1   thorpej 	if (error)
    499   1.1   thorpej 		return (error);
    500   1.1   thorpej 
    501  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    502  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
    503   1.1   thorpej 	if (error)
    504   1.1   thorpej 		return (error);
    505   1.1   thorpej 
    506  1.20  dholland 	error = extattr_set_vp(vp, SCARG(uap, attrnamespace), attrname,
    507  1.24      manu 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval, 0);
    508   1.1   thorpej 
    509  1.20  dholland 	vrele(vp);
    510   1.1   thorpej 	return (error);
    511   1.1   thorpej }
    512   1.1   thorpej 
    513   1.1   thorpej int
    514  1.15       dsl sys_extattr_get_fd(struct lwp *l, const struct sys_extattr_get_fd_args *uap, register_t *retval)
    515   1.1   thorpej {
    516  1.15       dsl 	/* {
    517   1.1   thorpej 		syscallarg(int) fd;
    518   1.1   thorpej 		syscallarg(int) attrnamespace;
    519   1.1   thorpej 		syscallarg(const char *) attrname;
    520   1.1   thorpej 		syscallarg(void *) data;
    521   1.1   thorpej 		syscallarg(size_t) nbytes;
    522  1.15       dsl 	} */
    523   1.1   thorpej 	struct file *fp;
    524   1.1   thorpej 	struct vnode *vp;
    525   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    526   1.1   thorpej 	int error;
    527   1.1   thorpej 
    528   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    529   1.1   thorpej 	    NULL);
    530   1.1   thorpej 	if (error)
    531   1.1   thorpej 		return (error);
    532   1.1   thorpej 
    533  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
    534   1.1   thorpej 	if (error)
    535   1.1   thorpej 		return (error);
    536   1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    537   1.1   thorpej 
    538   1.1   thorpej 	error = extattr_get_vp(vp, SCARG(uap, attrnamespace), attrname,
    539   1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    540   1.1   thorpej 
    541  1.17        ad 	fd_putfile(SCARG(uap, fd));
    542   1.1   thorpej 	return (error);
    543   1.1   thorpej }
    544   1.1   thorpej 
    545   1.1   thorpej int
    546  1.15       dsl sys_extattr_get_file(struct lwp *l, const struct sys_extattr_get_file_args *uap, register_t *retval)
    547   1.1   thorpej {
    548  1.15       dsl 	/* {
    549   1.1   thorpej 		syscallarg(const char *) path;
    550   1.1   thorpej 		syscallarg(int) attrnamespace;
    551   1.1   thorpej 		syscallarg(const char *) attrname;
    552   1.1   thorpej 		syscallarg(void *) data;
    553   1.1   thorpej 		syscallarg(size_t) nbytes;
    554  1.15       dsl 	} */
    555  1.20  dholland 	struct vnode *vp;
    556   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    557   1.1   thorpej 	int error;
    558   1.1   thorpej 
    559   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    560   1.1   thorpej 	    NULL);
    561   1.1   thorpej 	if (error)
    562   1.1   thorpej 		return (error);
    563   1.1   thorpej 
    564  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    565  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
    566   1.1   thorpej 	if (error)
    567   1.1   thorpej 		return (error);
    568   1.1   thorpej 
    569  1.20  dholland 	error = extattr_get_vp(vp, SCARG(uap, attrnamespace), attrname,
    570   1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    571   1.1   thorpej 
    572  1.20  dholland 	vrele(vp);
    573   1.1   thorpej 	return (error);
    574   1.1   thorpej }
    575   1.1   thorpej 
    576   1.1   thorpej int
    577  1.15       dsl sys_extattr_get_link(struct lwp *l, const struct sys_extattr_get_link_args *uap, register_t *retval)
    578   1.1   thorpej {
    579  1.15       dsl 	/* {
    580   1.1   thorpej 		syscallarg(const char *) path;
    581   1.1   thorpej 		syscallarg(int) attrnamespace;
    582   1.1   thorpej 		syscallarg(const char *) attrname;
    583   1.1   thorpej 		syscallarg(void *) data;
    584   1.1   thorpej 		syscallarg(size_t) nbytes;
    585  1.15       dsl 	} */
    586  1.20  dholland 	struct vnode *vp;
    587   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    588   1.1   thorpej 	int error;
    589   1.1   thorpej 
    590   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    591   1.1   thorpej 	    NULL);
    592   1.1   thorpej 	if (error)
    593   1.1   thorpej 		return (error);
    594   1.1   thorpej 
    595  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    596  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
    597   1.1   thorpej 	if (error)
    598   1.1   thorpej 		return (error);
    599   1.1   thorpej 
    600  1.20  dholland 	error = extattr_get_vp(vp, SCARG(uap, attrnamespace), attrname,
    601   1.4  christos 	    SCARG(uap, data), SCARG(uap, nbytes), l, retval);
    602   1.1   thorpej 
    603  1.20  dholland 	vrele(vp);
    604   1.1   thorpej 	return (error);
    605   1.1   thorpej }
    606   1.1   thorpej 
    607   1.1   thorpej int
    608  1.15       dsl sys_extattr_delete_fd(struct lwp *l, const struct sys_extattr_delete_fd_args *uap, register_t *retval)
    609   1.1   thorpej {
    610  1.15       dsl 	/* {
    611   1.1   thorpej 		syscallarg(int) fd;
    612   1.1   thorpej 		syscallarg(int) attrnamespace;
    613   1.1   thorpej 		syscallarg(const char *) attrname;
    614  1.15       dsl 	} */
    615   1.1   thorpej 	struct file *fp;
    616   1.1   thorpej 	struct vnode *vp;
    617   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    618   1.1   thorpej 	int error;
    619   1.1   thorpej 
    620   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    621   1.1   thorpej 	    NULL);
    622   1.1   thorpej 	if (error)
    623   1.1   thorpej 		return (error);
    624   1.1   thorpej 
    625  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
    626   1.1   thorpej 	if (error)
    627   1.1   thorpej 		return (error);
    628   1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    629   1.1   thorpej 
    630   1.4  christos 	error = extattr_delete_vp(vp, SCARG(uap, attrnamespace), attrname, l);
    631   1.1   thorpej 
    632  1.17        ad 	fd_putfile(SCARG(uap, fd));
    633   1.1   thorpej 	return (error);
    634   1.1   thorpej }
    635   1.1   thorpej 
    636   1.1   thorpej int
    637  1.15       dsl sys_extattr_delete_file(struct lwp *l, const struct sys_extattr_delete_file_args *uap, register_t *retval)
    638   1.1   thorpej {
    639  1.15       dsl 	/* {
    640   1.1   thorpej 		syscallarg(const char *) path;
    641   1.1   thorpej 		syscallarg(int) attrnamespace;
    642   1.1   thorpej 		syscallarg(const char *) attrname;
    643  1.15       dsl 	} */
    644  1.20  dholland 	struct vnode *vp;
    645   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    646   1.1   thorpej 	int error;
    647   1.1   thorpej 
    648   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    649   1.1   thorpej 	    NULL);
    650   1.1   thorpej 	if (error)
    651   1.1   thorpej 		return (error);
    652   1.1   thorpej 
    653  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    654  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
    655   1.1   thorpej 	if (error)
    656   1.1   thorpej 		return (error);
    657   1.1   thorpej 
    658  1.20  dholland 	error = extattr_delete_vp(vp, SCARG(uap, attrnamespace), attrname, l);
    659   1.1   thorpej 
    660  1.20  dholland 	vrele(vp);
    661   1.1   thorpej 	return (error);
    662   1.1   thorpej }
    663   1.1   thorpej 
    664   1.1   thorpej int
    665  1.15       dsl sys_extattr_delete_link(struct lwp *l, const struct sys_extattr_delete_link_args *uap, register_t *retval)
    666   1.1   thorpej {
    667  1.15       dsl 	/* {
    668   1.1   thorpej 		syscallarg(const char *) path;
    669   1.1   thorpej 		syscallarg(int) attrnamespace;
    670   1.1   thorpej 		syscallarg(const char *) attrname;
    671  1.15       dsl 	} */
    672  1.20  dholland 	struct vnode *vp;
    673   1.1   thorpej 	char attrname[EXTATTR_MAXNAMELEN];
    674   1.1   thorpej 	int error;
    675   1.1   thorpej 
    676   1.1   thorpej 	error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
    677   1.1   thorpej 	    NULL);
    678   1.1   thorpej 	if (error)
    679   1.1   thorpej 		return (error);
    680   1.1   thorpej 
    681  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    682  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
    683   1.1   thorpej 	if (error)
    684   1.1   thorpej 		return (error);
    685   1.1   thorpej 
    686  1.20  dholland 	error = extattr_delete_vp(vp, SCARG(uap, attrnamespace), attrname, l);
    687   1.1   thorpej 
    688  1.20  dholland 	vrele(vp);
    689   1.1   thorpej 	return (error);
    690   1.1   thorpej }
    691   1.1   thorpej 
    692   1.1   thorpej int
    693  1.15       dsl sys_extattr_list_fd(struct lwp *l, const struct sys_extattr_list_fd_args *uap, register_t *retval)
    694   1.1   thorpej {
    695  1.15       dsl 	/* {
    696   1.1   thorpej 		syscallarg(int) fd;
    697   1.1   thorpej 		syscallarg(int) attrnamespace;
    698   1.1   thorpej 		syscallarg(void *) data;
    699   1.1   thorpej 		syscallarg(size_t) nbytes;
    700  1.15       dsl 	} */
    701   1.1   thorpej 	struct file *fp;
    702   1.1   thorpej 	struct vnode *vp;
    703   1.1   thorpej 	int error;
    704   1.1   thorpej 
    705  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
    706   1.1   thorpej 	if (error)
    707   1.1   thorpej 		return (error);
    708   1.1   thorpej 	vp = (struct vnode *) fp->f_data;
    709   1.1   thorpej 
    710   1.1   thorpej 	error = extattr_list_vp(vp, SCARG(uap, attrnamespace),
    711  1.27      manu 	    SCARG(uap, data), SCARG(uap, nbytes),
    712  1.27      manu 	    EXTATTR_LIST_LENPREFIX, l, retval);
    713   1.1   thorpej 
    714  1.17        ad 	fd_putfile(SCARG(uap, fd));
    715   1.1   thorpej 	return (error);
    716   1.1   thorpej }
    717   1.1   thorpej 
    718   1.1   thorpej int
    719  1.15       dsl sys_extattr_list_file(struct lwp *l, const struct sys_extattr_list_file_args *uap, register_t *retval)
    720   1.1   thorpej {
    721  1.15       dsl 	/* {
    722   1.1   thorpej 		syscallarg(const char *) path;
    723   1.1   thorpej 		syscallarg(int) attrnamespace;
    724   1.1   thorpej 		syscallarg(void *) data;
    725   1.1   thorpej 		syscallarg(size_t) nbytes;
    726  1.15       dsl 	} */
    727  1.20  dholland 	struct vnode *vp;
    728   1.1   thorpej 	int error;
    729   1.1   thorpej 
    730  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    731  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
    732   1.1   thorpej 	if (error)
    733   1.1   thorpej 		return (error);
    734   1.1   thorpej 
    735  1.20  dholland 	error = extattr_list_vp(vp, SCARG(uap, attrnamespace),
    736  1.27      manu 	    SCARG(uap, data), SCARG(uap, nbytes),
    737  1.27      manu 	    EXTATTR_LIST_LENPREFIX, l, retval);
    738   1.1   thorpej 
    739  1.20  dholland 	vrele(vp);
    740   1.1   thorpej 	return (error);
    741   1.1   thorpej }
    742   1.1   thorpej 
    743   1.1   thorpej int
    744  1.15       dsl sys_extattr_list_link(struct lwp *l, const struct sys_extattr_list_link_args *uap, register_t *retval)
    745   1.1   thorpej {
    746  1.15       dsl 	/* {
    747   1.1   thorpej 		syscallarg(const char *) path;
    748   1.1   thorpej 		syscallarg(int) attrnamespace;
    749   1.1   thorpej 		syscallarg(void *) data;
    750   1.1   thorpej 		syscallarg(size_t) nbytes;
    751  1.15       dsl 	} */
    752  1.20  dholland 	struct vnode *vp;
    753   1.1   thorpej 	int error;
    754   1.1   thorpej 
    755  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    756  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
    757   1.1   thorpej 	if (error)
    758   1.1   thorpej 		return (error);
    759   1.1   thorpej 
    760  1.20  dholland 	error = extattr_list_vp(vp, SCARG(uap, attrnamespace),
    761  1.27      manu 	    SCARG(uap, data), SCARG(uap, nbytes),
    762  1.27      manu 	    EXTATTR_LIST_LENPREFIX, l, retval);
    763   1.1   thorpej 
    764  1.20  dholland 	vrele(vp);
    765   1.1   thorpej 	return (error);
    766   1.1   thorpej }
    767   1.2   thorpej 
    768   1.2   thorpej /*****************************************************************************
    769   1.2   thorpej  * Linux-compatible <sys/xattr.h> API for file system extended attributes
    770   1.2   thorpej  *****************************************************************************/
    771   1.2   thorpej 
    772  1.24      manu #define MATCH_NS(ns, key) (strncmp(ns, key, sizeof(ns) - 1) == 0)
    773  1.24      manu static int
    774  1.24      manu xattr_native(const char *key) {
    775  1.24      manu 	if (MATCH_NS("system.", key))
    776  1.24      manu 		return EXTATTR_NAMESPACE_SYSTEM;
    777  1.24      manu 	else if (MATCH_NS("user.", key))
    778  1.24      manu 		return EXTATTR_NAMESPACE_USER;
    779  1.24      manu 	else if (MATCH_NS("security.", key))
    780  1.24      manu 		return EXTATTR_NAMESPACE_SYSTEM;
    781  1.24      manu 	else if (MATCH_NS("trusted.", key))
    782  1.24      manu 		return EXTATTR_NAMESPACE_SYSTEM;
    783  1.24      manu 	else
    784  1.24      manu 		return EXTATTR_NAMESPACE_USER;
    785  1.24      manu 
    786  1.24      manu }
    787  1.24      manu #undef MATCH_NS
    788  1.24      manu 
    789  1.29  drochner #define XATTR_ERRNO(e) ((e) == EOPNOTSUPP ? ENOTSUP : (e))
    790  1.29  drochner 
    791   1.2   thorpej int
    792  1.15       dsl sys_setxattr(struct lwp *l, const struct sys_setxattr_args *uap, register_t *retval)
    793   1.2   thorpej {
    794  1.15       dsl 	/* {
    795   1.2   thorpej 		syscallarg(const char *) path;
    796   1.2   thorpej 		syscallarg(const char *) name;
    797   1.2   thorpej 		syscallarg(void *) value;
    798   1.2   thorpej 		syscallarg(size_t) size;
    799   1.2   thorpej 		syscallarg(int) flags;
    800  1.15       dsl 	} */
    801  1.20  dholland 	struct vnode *vp;
    802   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    803  1.24      manu 	int namespace;
    804  1.24      manu 	register_t attrlen;
    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  1.24      manu 		goto out;
    811   1.2   thorpej 
    812  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    813  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
    814   1.2   thorpej 	if (error)
    815  1.26      manu 		goto out;
    816   1.2   thorpej 
    817  1.24      manu 	namespace = xattr_native(attrname);
    818   1.2   thorpej 
    819  1.24      manu 	error = extattr_set_vp(vp, namespace,
    820  1.24      manu 	    attrname, SCARG(uap, value), SCARG(uap, size), l,
    821  1.24      manu 	    &attrlen, SCARG(uap, flags));
    822   1.2   thorpej 
    823  1.20  dholland 	vrele(vp);
    824  1.24      manu out:
    825  1.24      manu 	*retval = (error == 0) ? 0 : -1;
    826  1.29  drochner 	return (XATTR_ERRNO(error));
    827   1.2   thorpej }
    828   1.2   thorpej 
    829   1.2   thorpej int
    830  1.15       dsl sys_lsetxattr(struct lwp *l, const struct sys_lsetxattr_args *uap, register_t *retval)
    831   1.2   thorpej {
    832  1.15       dsl 	/* {
    833   1.2   thorpej 		syscallarg(const char *) path;
    834   1.2   thorpej 		syscallarg(const char *) name;
    835   1.2   thorpej 		syscallarg(void *) value;
    836   1.2   thorpej 		syscallarg(size_t) size;
    837   1.2   thorpej 		syscallarg(int) flags;
    838  1.15       dsl 	} */
    839  1.20  dholland 	struct vnode *vp;
    840   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    841  1.24      manu 	int namespace;
    842  1.24      manu 	register_t attrlen;
    843   1.2   thorpej 	int error;
    844   1.2   thorpej 
    845   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    846   1.2   thorpej 	    NULL);
    847   1.2   thorpej 	if (error)
    848  1.24      manu 		goto out;
    849   1.2   thorpej 
    850  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    851  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
    852   1.2   thorpej 	if (error)
    853  1.26      manu 		goto out;
    854   1.2   thorpej 
    855  1.24      manu 	namespace = xattr_native(attrname);
    856   1.2   thorpej 
    857  1.24      manu 	error = extattr_set_vp(vp, namespace,
    858  1.24      manu 	    attrname, SCARG(uap, value), SCARG(uap, size), l,
    859  1.24      manu 	    &attrlen, SCARG(uap, flags));
    860   1.2   thorpej 
    861  1.20  dholland 	vrele(vp);
    862  1.24      manu out:
    863  1.24      manu 	*retval = (error == 0) ? 0 : -1;
    864  1.29  drochner 	return (XATTR_ERRNO(error));
    865   1.2   thorpej }
    866   1.2   thorpej 
    867   1.2   thorpej int
    868  1.15       dsl sys_fsetxattr(struct lwp *l, const struct sys_fsetxattr_args *uap, register_t *retval)
    869   1.2   thorpej {
    870  1.15       dsl 	/* {
    871   1.2   thorpej 		syscallarg(int) fd;
    872   1.2   thorpej 		syscallarg(const char *) name;
    873   1.2   thorpej 		syscallarg(void *) value;
    874   1.2   thorpej 		syscallarg(size_t) size;
    875   1.2   thorpej 		syscallarg(int) flags;
    876  1.15       dsl 	} */
    877   1.2   thorpej 	struct file *fp;
    878   1.2   thorpej 	struct vnode *vp;
    879   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    880  1.24      manu 	int namespace;
    881  1.24      manu 	register_t attrlen;
    882   1.2   thorpej 	int error;
    883   1.2   thorpej 
    884   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    885   1.2   thorpej 	    NULL);
    886   1.2   thorpej 	if (error)
    887  1.24      manu 		goto out;
    888   1.2   thorpej 
    889  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
    890   1.2   thorpej 	if (error)
    891  1.24      manu 		goto out;
    892   1.2   thorpej 	vp = (struct vnode *) fp->f_data;
    893   1.2   thorpej 
    894  1.24      manu 	namespace = xattr_native(attrname);
    895   1.2   thorpej 
    896  1.24      manu 	error = extattr_set_vp(vp, namespace,
    897  1.24      manu 	    attrname, SCARG(uap, value), SCARG(uap, size), l,
    898  1.24      manu 	    &attrlen, SCARG(uap, flags));
    899   1.2   thorpej 
    900  1.17        ad 	fd_putfile(SCARG(uap, fd));
    901  1.24      manu out:
    902  1.24      manu 	*retval = (error == 0) ? 0 : -1;
    903  1.29  drochner 	return (XATTR_ERRNO(error));
    904   1.2   thorpej }
    905   1.2   thorpej 
    906   1.2   thorpej int
    907  1.15       dsl sys_getxattr(struct lwp *l, const struct sys_getxattr_args *uap, register_t *retval)
    908   1.2   thorpej {
    909  1.15       dsl 	/* {
    910   1.2   thorpej 		syscallarg(const char *) path;
    911   1.2   thorpej 		syscallarg(const char *) name;
    912   1.2   thorpej 		syscallarg(void *) value;
    913   1.2   thorpej 		syscallarg(size_t) size;
    914  1.15       dsl 	} */
    915  1.20  dholland 	struct vnode *vp;
    916   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    917  1.24      manu 	int namespace;
    918   1.2   thorpej 	int error;
    919   1.2   thorpej 
    920   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    921   1.2   thorpej 	    NULL);
    922   1.2   thorpej 	if (error)
    923   1.2   thorpej 		return (error);
    924   1.2   thorpej 
    925  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    926  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
    927   1.2   thorpej 	if (error)
    928   1.2   thorpej 		return (error);
    929   1.2   thorpej 
    930  1.24      manu 	namespace = xattr_native(attrname);
    931  1.24      manu 
    932  1.24      manu 	error = extattr_get_vp(vp, namespace,
    933   1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    934   1.2   thorpej 
    935  1.20  dholland 	vrele(vp);
    936  1.29  drochner 	return (XATTR_ERRNO(error));
    937   1.2   thorpej }
    938   1.2   thorpej 
    939   1.2   thorpej int
    940  1.15       dsl sys_lgetxattr(struct lwp *l, const struct sys_lgetxattr_args *uap, register_t *retval)
    941   1.2   thorpej {
    942  1.15       dsl 	/* {
    943   1.2   thorpej 		syscallarg(const char *) path;
    944   1.2   thorpej 		syscallarg(const char *) name;
    945   1.2   thorpej 		syscallarg(void *) value;
    946   1.2   thorpej 		syscallarg(size_t) size;
    947  1.15       dsl 	} */
    948  1.20  dholland 	struct vnode *vp;
    949   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    950  1.24      manu 	int namespace;
    951   1.2   thorpej 	int error;
    952   1.2   thorpej 
    953   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    954   1.2   thorpej 	    NULL);
    955   1.2   thorpej 	if (error)
    956   1.2   thorpej 		return (error);
    957   1.2   thorpej 
    958  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
    959  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
    960   1.2   thorpej 	if (error)
    961   1.2   thorpej 		return (error);
    962   1.2   thorpej 
    963  1.24      manu 	namespace = xattr_native(attrname);
    964  1.24      manu 
    965  1.24      manu 	error = extattr_get_vp(vp, namespace,
    966   1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
    967   1.2   thorpej 
    968  1.20  dholland 	vrele(vp);
    969  1.29  drochner 	return (XATTR_ERRNO(error));
    970   1.2   thorpej }
    971   1.2   thorpej 
    972   1.2   thorpej int
    973  1.15       dsl sys_fgetxattr(struct lwp *l, const struct sys_fgetxattr_args *uap, register_t *retval)
    974   1.2   thorpej {
    975  1.15       dsl 	/* {
    976   1.2   thorpej 		syscallarg(int) fd;
    977   1.2   thorpej 		syscallarg(const char *) name;
    978   1.2   thorpej 		syscallarg(void *) value;
    979   1.2   thorpej 		syscallarg(size_t) size;
    980  1.15       dsl 	} */
    981   1.2   thorpej 	struct file *fp;
    982   1.2   thorpej 	struct vnode *vp;
    983   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
    984  1.24      manu 	int namespace;
    985   1.2   thorpej 	int error;
    986   1.2   thorpej 
    987   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
    988   1.2   thorpej 	    NULL);
    989   1.2   thorpej 	if (error)
    990   1.2   thorpej 		return (error);
    991   1.2   thorpej 
    992  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
    993   1.2   thorpej 	if (error)
    994   1.2   thorpej 		return (error);
    995   1.2   thorpej 	vp = (struct vnode *) fp->f_data;
    996   1.2   thorpej 
    997  1.24      manu 	namespace = xattr_native(attrname);
    998  1.24      manu 
    999  1.24      manu 	error = extattr_get_vp(vp, namespace,
   1000   1.4  christos 	    attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
   1001   1.2   thorpej 
   1002  1.17        ad 	fd_putfile(SCARG(uap, fd));
   1003  1.29  drochner 	return (XATTR_ERRNO(error));
   1004   1.2   thorpej }
   1005   1.2   thorpej 
   1006   1.2   thorpej int
   1007  1.15       dsl sys_listxattr(struct lwp *l, const struct sys_listxattr_args *uap, register_t *retval)
   1008   1.2   thorpej {
   1009  1.15       dsl 	/* {
   1010   1.2   thorpej 		syscallarg(const char *) path;
   1011   1.2   thorpej 		syscallarg(char *) list;
   1012   1.2   thorpej 		syscallarg(size_t) size;
   1013  1.15       dsl 	} */
   1014  1.20  dholland 	struct vnode *vp;
   1015  1.24      manu 	char *list;
   1016  1.24      manu 	size_t size;
   1017  1.24      manu 	register_t listsize_usr, listsize_sys;
   1018   1.2   thorpej 	int error;
   1019   1.2   thorpej 
   1020  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
   1021  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
   1022   1.2   thorpej 	if (error)
   1023   1.2   thorpej 		return (error);
   1024   1.2   thorpej 
   1025  1.24      manu 	list = SCARG(uap, list);
   1026  1.24      manu 	size = SCARG(uap, size);
   1027  1.24      manu 
   1028  1.20  dholland 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_USER,
   1029  1.27      manu 	    list, size, 0, l, &listsize_usr);
   1030  1.24      manu 	if (error)
   1031  1.24      manu 		goto out;
   1032  1.24      manu 
   1033  1.24      manu 	if (list)
   1034  1.24      manu 		list += listsize_usr;
   1035  1.24      manu 	if (size)
   1036  1.24      manu 		size -= listsize_usr;
   1037   1.2   thorpej 
   1038  1.24      manu 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_SYSTEM,
   1039  1.27      manu 	    list, size, 0, l, &listsize_sys);
   1040  1.25      manu 	switch (error) {
   1041  1.25      manu 	case EPERM:
   1042  1.25      manu 		error = 0; /* Ignore and just skip system EA */
   1043  1.25      manu 		listsize_sys = 0;
   1044  1.25      manu 		break;
   1045  1.25      manu 	case 0:
   1046  1.25      manu 		break;
   1047  1.25      manu 	default:
   1048  1.24      manu 		goto out;
   1049  1.25      manu 		break;
   1050  1.25      manu 	}
   1051  1.24      manu 
   1052  1.24      manu 	*retval = listsize_usr + listsize_sys;
   1053  1.24      manu 
   1054  1.24      manu out:
   1055  1.20  dholland 	vrele(vp);
   1056  1.29  drochner 	return (XATTR_ERRNO(error));
   1057   1.2   thorpej }
   1058   1.2   thorpej 
   1059   1.2   thorpej int
   1060  1.15       dsl sys_llistxattr(struct lwp *l, const struct sys_llistxattr_args *uap, register_t *retval)
   1061   1.2   thorpej {
   1062  1.15       dsl 	/* {
   1063   1.2   thorpej 		syscallarg(const char *) path;
   1064   1.2   thorpej 		syscallarg(char *) list;
   1065   1.2   thorpej 		syscallarg(size_t) size;
   1066  1.15       dsl 	} */
   1067  1.20  dholland 	struct vnode *vp;
   1068  1.24      manu 	char *list;
   1069  1.24      manu 	size_t size;
   1070  1.24      manu 	register_t listsize_usr, listsize_sys;
   1071   1.2   thorpej 	int error;
   1072   1.2   thorpej 
   1073  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
   1074  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
   1075   1.2   thorpej 	if (error)
   1076   1.2   thorpej 		return (error);
   1077   1.2   thorpej 
   1078  1.24      manu 	list = SCARG(uap, list);
   1079  1.24      manu 	size = SCARG(uap, size);
   1080  1.24      manu 
   1081  1.20  dholland 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_USER,
   1082  1.27      manu 	    list, size, 0, l, &listsize_usr);
   1083  1.24      manu 	if (error)
   1084  1.24      manu 		goto out;
   1085  1.24      manu 	if (list)
   1086  1.24      manu 		list += listsize_usr;
   1087  1.24      manu 	if (size)
   1088  1.24      manu 		size -= listsize_usr;
   1089   1.2   thorpej 
   1090  1.24      manu 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_SYSTEM,
   1091  1.27      manu 	    list, size, 0, l, &listsize_sys);
   1092  1.25      manu 	switch (error) {
   1093  1.25      manu 	case EPERM:
   1094  1.25      manu 		error = 0; /* Ignore and just skip system EA */
   1095  1.25      manu 		listsize_sys = 0;
   1096  1.25      manu 		break;
   1097  1.25      manu 	case 0:
   1098  1.25      manu 		break;
   1099  1.25      manu 	default:
   1100  1.24      manu 		goto out;
   1101  1.25      manu 		break;
   1102  1.25      manu 	}
   1103  1.24      manu 
   1104  1.24      manu 	*retval = listsize_usr + listsize_sys;
   1105  1.24      manu out:
   1106  1.20  dholland 	vrele(vp);
   1107  1.29  drochner 	return (XATTR_ERRNO(error));
   1108   1.2   thorpej }
   1109   1.2   thorpej 
   1110   1.2   thorpej int
   1111  1.15       dsl sys_flistxattr(struct lwp *l, const struct sys_flistxattr_args *uap, register_t *retval)
   1112   1.2   thorpej {
   1113  1.15       dsl 	/* {
   1114   1.2   thorpej 		syscallarg(int) fd;
   1115   1.2   thorpej 		syscallarg(char *) list;
   1116   1.2   thorpej 		syscallarg(size_t) size;
   1117  1.15       dsl 	} */
   1118   1.2   thorpej 	struct file *fp;
   1119   1.2   thorpej 	struct vnode *vp;
   1120  1.24      manu 	char *list;
   1121  1.24      manu 	size_t size;
   1122  1.24      manu 	register_t listsize_usr, listsize_sys;
   1123   1.2   thorpej 	int error;
   1124   1.2   thorpej 
   1125  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
   1126   1.2   thorpej 	if (error)
   1127   1.2   thorpej 		return (error);
   1128   1.2   thorpej 	vp = (struct vnode *) fp->f_data;
   1129   1.2   thorpej 
   1130  1.24      manu 	list = SCARG(uap, list);
   1131  1.24      manu 	size = SCARG(uap, size);
   1132  1.24      manu 
   1133   1.2   thorpej 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_USER,
   1134  1.27      manu 	    list, size, 0, l, &listsize_usr);
   1135  1.24      manu 	if (error)
   1136  1.24      manu 		goto out;
   1137  1.24      manu 
   1138  1.24      manu 	if (list)
   1139  1.24      manu 		list += listsize_usr;
   1140  1.24      manu 	if (size)
   1141  1.24      manu 		size -= listsize_usr;
   1142  1.24      manu 
   1143  1.24      manu 	error = extattr_list_vp(vp, EXTATTR_NAMESPACE_SYSTEM,
   1144  1.27      manu 	    list, size, 0, l, &listsize_sys);
   1145  1.25      manu 	switch (error) {
   1146  1.25      manu 	case EPERM:
   1147  1.25      manu 		error = 0; /* Ignore and just skip system EA */
   1148  1.25      manu 		listsize_sys = 0;
   1149  1.25      manu 		break;
   1150  1.25      manu 	case 0:
   1151  1.25      manu 		break;
   1152  1.25      manu 	default:
   1153  1.24      manu 		goto out;
   1154  1.25      manu 		break;
   1155  1.25      manu 	}
   1156  1.24      manu 
   1157  1.24      manu 	*retval = listsize_usr + listsize_sys;
   1158  1.24      manu out:
   1159   1.2   thorpej 
   1160  1.17        ad 	fd_putfile(SCARG(uap, fd));
   1161  1.29  drochner 	return (XATTR_ERRNO(error));
   1162   1.2   thorpej }
   1163   1.2   thorpej 
   1164   1.2   thorpej int
   1165  1.15       dsl sys_removexattr(struct lwp *l, const struct sys_removexattr_args *uap, register_t *retval)
   1166   1.2   thorpej {
   1167  1.15       dsl 	/* {
   1168   1.2   thorpej 		syscallarg(const char *) path;
   1169   1.2   thorpej 		syscallarg(const char *) name;
   1170  1.15       dsl 	} */
   1171  1.20  dholland 	struct vnode *vp;
   1172   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
   1173  1.24      manu 	int namespace;
   1174   1.2   thorpej 	int error;
   1175   1.2   thorpej 
   1176   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
   1177   1.2   thorpej 	    NULL);
   1178   1.2   thorpej 	if (error)
   1179   1.2   thorpej 		return (error);
   1180   1.2   thorpej 
   1181  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
   1182  1.20  dholland 				NSM_FOLLOW_NOEMULROOT, &vp);
   1183   1.2   thorpej 	if (error)
   1184   1.2   thorpej 		return (error);
   1185   1.2   thorpej 
   1186  1.24      manu 	namespace = xattr_native(attrname);
   1187  1.24      manu 
   1188  1.24      manu 	error = extattr_delete_vp(vp, namespace, attrname, l);
   1189   1.2   thorpej 
   1190  1.20  dholland 	vrele(vp);
   1191  1.29  drochner 	return (XATTR_ERRNO(error));
   1192   1.2   thorpej }
   1193   1.2   thorpej 
   1194   1.2   thorpej int
   1195  1.15       dsl sys_lremovexattr(struct lwp *l, const struct sys_lremovexattr_args *uap, register_t *retval)
   1196   1.2   thorpej {
   1197  1.15       dsl 	/* {
   1198   1.2   thorpej 		syscallarg(const char *) path;
   1199   1.2   thorpej 		syscallarg(const char *) name;
   1200  1.15       dsl 	} */
   1201  1.20  dholland 	struct vnode *vp;
   1202   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
   1203  1.24      manu 	int namespace;
   1204   1.2   thorpej 	int error;
   1205   1.2   thorpej 
   1206   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
   1207   1.2   thorpej 	    NULL);
   1208   1.2   thorpej 	if (error)
   1209   1.2   thorpej 		return (error);
   1210   1.2   thorpej 
   1211  1.20  dholland 	error = namei_simple_user(SCARG(uap, path),
   1212  1.20  dholland 				NSM_NOFOLLOW_NOEMULROOT, &vp);
   1213   1.2   thorpej 	if (error)
   1214   1.2   thorpej 		return (error);
   1215   1.2   thorpej 
   1216  1.24      manu 	namespace = xattr_native(attrname);
   1217  1.24      manu 
   1218  1.24      manu 	error = extattr_delete_vp(vp, namespace, attrname, l);
   1219   1.2   thorpej 
   1220  1.20  dholland 	vrele(vp);
   1221  1.29  drochner 	return (XATTR_ERRNO(error));
   1222   1.2   thorpej }
   1223   1.2   thorpej 
   1224   1.2   thorpej int
   1225  1.15       dsl sys_fremovexattr(struct lwp *l, const struct sys_fremovexattr_args *uap, register_t *retval)
   1226   1.2   thorpej {
   1227  1.15       dsl 	/* {
   1228   1.2   thorpej 		syscallarg(int) fd;
   1229   1.2   thorpej 		syscallarg(const char *) name;
   1230  1.15       dsl 	} */
   1231   1.2   thorpej 	struct file *fp;
   1232   1.2   thorpej 	struct vnode *vp;
   1233   1.2   thorpej 	char attrname[XATTR_NAME_MAX];
   1234  1.24      manu 	int namespace;
   1235   1.2   thorpej 	int error;
   1236   1.2   thorpej 
   1237   1.2   thorpej 	error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
   1238   1.2   thorpej 	    NULL);
   1239   1.2   thorpej 	if (error)
   1240   1.2   thorpej 		return (error);
   1241   1.2   thorpej 
   1242  1.19        ad 	error = fd_getvnode(SCARG(uap, fd), &fp);
   1243   1.2   thorpej 	if (error)
   1244   1.2   thorpej 		return (error);
   1245   1.2   thorpej 	vp = (struct vnode *) fp->f_data;
   1246   1.2   thorpej 
   1247  1.24      manu 	namespace = xattr_native(attrname);
   1248  1.24      manu 
   1249  1.24      manu 	error = extattr_delete_vp(vp, namespace, attrname, l);
   1250   1.2   thorpej 
   1251  1.17        ad 	fd_putfile(SCARG(uap, fd));
   1252  1.29  drochner 	return (XATTR_ERRNO(error));
   1253   1.2   thorpej }
   1254