1084 lines
26 KiB
C
1084 lines
26 KiB
C
/* $NetBSD: vfs_xattr.c,v 1.12 2007/04/03 16:11:31 hannken Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2005 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* (c) UNIX System Laboratories, Inc.
|
|
* All or some portions of this file are derived from material licensed
|
|
* to the University of California by American Telephone and Telegraph
|
|
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
|
|
* the permission of UNIX System Laboratories, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* VFS extended attribute support.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: vfs_xattr.c,v 1.12 2007/04/03 16:11:31 hannken Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/file.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/extattr.h>
|
|
#include <sys/xattr.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/syscallargs.h>
|
|
#include <sys/kauth.h>
|
|
|
|
/*
|
|
* Credential check based on process requesting service, and per-attribute
|
|
* permissions.
|
|
*
|
|
* NOTE: Vnode must be locked.
|
|
*/
|
|
int
|
|
extattr_check_cred(struct vnode *vp, int attrnamespace,
|
|
kauth_cred_t cred, struct lwp *l, int access)
|
|
{
|
|
|
|
if (cred == NOCRED)
|
|
return (0);
|
|
|
|
switch (attrnamespace) {
|
|
case EXTATTR_NAMESPACE_SYSTEM:
|
|
/*
|
|
* Do we really want to allow this, or just require that
|
|
* these requests come from kernel code (NOCRED case above)?
|
|
*/
|
|
return (kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER,
|
|
NULL));
|
|
|
|
case EXTATTR_NAMESPACE_USER:
|
|
return (VOP_ACCESS(vp, access, cred, l));
|
|
|
|
default:
|
|
return (EPERM);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Default vfs_extattrctl routine for file systems that do not support
|
|
* it.
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
vfs_stdextattrctl(struct mount *mp, int cmt, struct vnode *vp,
|
|
int attrnamespace, const char *attrname, struct lwp *l)
|
|
{
|
|
|
|
if (vp != NULL)
|
|
VOP_UNLOCK(vp, 0);
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* Push extended attribute configuration information into the file
|
|
* system.
|
|
*
|
|
* NOTE: Not all file systems that support extended attributes will
|
|
* require the use of this system call.
|
|
*/
|
|
int
|
|
sys_extattrctl(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattrctl_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) cmd;
|
|
syscallarg(const char *) filename;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
} */ *uap = v;
|
|
struct vnode *vp;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
if (SCARG(uap, attrname) != NULL) {
|
|
error = copyinstr(SCARG(uap, attrname), attrname,
|
|
sizeof(attrname), NULL);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
|
|
vp = NULL;
|
|
if (SCARG(uap, filename) != NULL) {
|
|
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
|
|
SCARG(uap, filename), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
vp = nd.ni_vp;
|
|
}
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error) {
|
|
if (vp != NULL)
|
|
vput(vp);
|
|
return (error);
|
|
}
|
|
|
|
error = VFS_EXTATTRCTL(nd.ni_vp->v_mount, SCARG(uap, cmd), vp,
|
|
SCARG(uap, attrnamespace),
|
|
SCARG(uap, attrname) != NULL ? attrname : NULL, l);
|
|
|
|
if (vp != NULL)
|
|
vrele(vp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Internal routines to manipulate file system extended attributes:
|
|
* - set
|
|
* - get
|
|
* - delete
|
|
* - list
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* extattr_set_vp:
|
|
*
|
|
* Set a named extended attribute on a file or directory.
|
|
*/
|
|
static int
|
|
extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
|
const void *data, size_t nbytes, struct lwp *l, register_t *retval)
|
|
{
|
|
struct uio auio;
|
|
struct iovec aiov;
|
|
ssize_t cnt;
|
|
int error;
|
|
|
|
VOP_LEASE(vp, l, l->l_cred, LEASE_WRITE);
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
|
|
aiov.iov_base = __UNCONST(data); /* XXXUNCONST kills const */
|
|
aiov.iov_len = nbytes;
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_iovcnt = 1;
|
|
auio.uio_offset = 0;
|
|
if (nbytes > INT_MAX) {
|
|
error = EINVAL;
|
|
goto done;
|
|
}
|
|
auio.uio_resid = nbytes;
|
|
auio.uio_rw = UIO_WRITE;
|
|
KASSERT(l == curlwp);
|
|
auio.uio_vmspace = l->l_proc->p_vmspace;
|
|
cnt = nbytes;
|
|
|
|
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio,
|
|
l->l_cred, l);
|
|
cnt -= auio.uio_resid;
|
|
retval[0] = cnt;
|
|
|
|
done:
|
|
VOP_UNLOCK(vp, 0);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* extattr_get_vp:
|
|
*
|
|
* Get a named extended attribute on a file or directory.
|
|
*/
|
|
static int
|
|
extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
|
void *data, size_t nbytes, struct lwp *l, register_t *retval)
|
|
{
|
|
struct uio auio, *auiop;
|
|
struct iovec aiov;
|
|
ssize_t cnt;
|
|
size_t size, *sizep;
|
|
int error;
|
|
|
|
VOP_LEASE(vp, l, l->l_cred, LEASE_READ);
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
|
|
/*
|
|
* Slightly unusual semantics: if the user provides a NULL data
|
|
* pointer, they don't want to receive the data, just the maximum
|
|
* read length.
|
|
*/
|
|
auiop = NULL;
|
|
sizep = NULL;
|
|
cnt = 0;
|
|
if (data != NULL) {
|
|
aiov.iov_base = data;
|
|
aiov.iov_len = nbytes;
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_offset = 0;
|
|
if (nbytes > INT_MAX) {
|
|
error = EINVAL;
|
|
goto done;
|
|
}
|
|
auio.uio_resid = nbytes;
|
|
auio.uio_rw = UIO_READ;
|
|
KASSERT(l == curlwp);
|
|
auio.uio_vmspace = l->l_proc->p_vmspace;
|
|
auiop = &auio;
|
|
cnt = nbytes;
|
|
} else
|
|
sizep = &size;
|
|
|
|
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
|
|
l->l_cred, l);
|
|
|
|
if (auiop != NULL) {
|
|
cnt -= auio.uio_resid;
|
|
retval[0] = cnt;
|
|
} else
|
|
retval[0] = size;
|
|
|
|
done:
|
|
VOP_UNLOCK(vp, 0);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* extattr_delete_vp:
|
|
*
|
|
* Delete a named extended attribute on a file or directory.
|
|
*/
|
|
static int
|
|
extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
|
struct lwp *l)
|
|
{
|
|
int error;
|
|
|
|
VOP_LEASE(vp, l, l->l_cred, LEASE_WRITE);
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
|
|
error = VOP_DELETEEXTATTR(vp, attrnamespace, attrname, l->l_cred, l);
|
|
if (error == EOPNOTSUPP)
|
|
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
|
|
l->l_cred, l);
|
|
|
|
VOP_UNLOCK(vp, 0);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* extattr_list_vp:
|
|
*
|
|
* Retrieve a list of extended attributes on a file or directory.
|
|
*/
|
|
static int
|
|
extattr_list_vp(struct vnode *vp, int attrnamespace, void *data, size_t nbytes,
|
|
struct lwp *l, register_t *retval)
|
|
{
|
|
struct uio auio, *auiop;
|
|
size_t size, *sizep;
|
|
struct iovec aiov;
|
|
ssize_t cnt;
|
|
int error;
|
|
|
|
VOP_LEASE(vp, l, l->l_cred, LEASE_READ);
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
|
|
auiop = NULL;
|
|
sizep = NULL;
|
|
cnt = 0;
|
|
if (data != NULL) {
|
|
aiov.iov_base = data;
|
|
aiov.iov_len = nbytes;
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_offset = 0;
|
|
if (nbytes > INT_MAX) {
|
|
error = EINVAL;
|
|
goto done;
|
|
}
|
|
auio.uio_resid = nbytes;
|
|
auio.uio_rw = UIO_READ;
|
|
KASSERT(l == curlwp);
|
|
auio.uio_vmspace = l->l_proc->p_vmspace;
|
|
auiop = &auio;
|
|
cnt = nbytes;
|
|
} else
|
|
sizep = &size;
|
|
|
|
error = VOP_LISTEXTATTR(vp, attrnamespace, auiop, sizep,
|
|
l->l_cred, l);
|
|
|
|
if (auiop != NULL) {
|
|
cnt -= auio.uio_resid;
|
|
retval[0] = cnt;
|
|
} else
|
|
retval[0] = size;
|
|
|
|
done:
|
|
VOP_UNLOCK(vp, 0);
|
|
return (error);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* BSD <sys/extattr.h> API for file system extended attributes
|
|
*****************************************************************************/
|
|
|
|
int
|
|
sys_extattr_set_fd(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_set_fd_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
syscallarg(const void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_set_vp(vp, SCARG(uap, attrnamespace), attrname,
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_set_file(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_set_file_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
syscallarg(const void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_set_link(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_set_link_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
syscallarg(const void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_get_fd(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_get_fd_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
syscallarg(void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_get_vp(vp, SCARG(uap, attrnamespace), attrname,
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_get_file(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_get_file_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
syscallarg(void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_get_link(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_get_link_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
syscallarg(void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_delete_fd(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_delete_fd_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_delete_vp(vp, SCARG(uap, attrnamespace), attrname, l);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_delete_file(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_delete_file_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
|
l);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_delete_link(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_delete_link_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(const char *) attrname;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[EXTATTR_MAXNAMELEN];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
|
l);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_list_fd(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_list_fd_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
int error;
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_list_vp(vp, SCARG(uap, attrnamespace),
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_list_file(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_list_file_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
int error;
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_extattr_list_link(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_extattr_list_link_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(int) attrnamespace;
|
|
syscallarg(void *) data;
|
|
syscallarg(size_t) nbytes;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
int error;
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
|
|
SCARG(uap, data), SCARG(uap, nbytes), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Linux-compatible <sys/xattr.h> API for file system extended attributes
|
|
*****************************************************************************/
|
|
|
|
int
|
|
sys_setxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_setxattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(const char *) name;
|
|
syscallarg(void *) value;
|
|
syscallarg(size_t) size;
|
|
syscallarg(int) flags;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
/* XXX flags */
|
|
|
|
error = extattr_set_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_lsetxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_lsetxattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(const char *) name;
|
|
syscallarg(void *) value;
|
|
syscallarg(size_t) size;
|
|
syscallarg(int) flags;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
/* XXX flags */
|
|
|
|
error = extattr_set_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_fsetxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_fsetxattr_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(const char *) name;
|
|
syscallarg(void *) value;
|
|
syscallarg(size_t) size;
|
|
syscallarg(int) flags;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
/* XXX flags */
|
|
|
|
error = extattr_set_vp(vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_getxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_getxattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(const char *) name;
|
|
syscallarg(void *) value;
|
|
syscallarg(size_t) size;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_get_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_lgetxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_lgetxattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(const char *) name;
|
|
syscallarg(void *) value;
|
|
syscallarg(size_t) size;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_get_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_fgetxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_fgetxattr_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(const char *) name;
|
|
syscallarg(void *) value;
|
|
syscallarg(size_t) size;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_get_vp(vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, SCARG(uap, value), SCARG(uap, size), l, retval);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_listxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_listxattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(char *) list;
|
|
syscallarg(size_t) size;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
int error;
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_list_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
SCARG(uap, list), SCARG(uap, size), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_llistxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_llistxattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(char *) list;
|
|
syscallarg(size_t) size;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
int error;
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_list_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
SCARG(uap, list), SCARG(uap, size), l, retval);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_flistxattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_flistxattr_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(char *) list;
|
|
syscallarg(size_t) size;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
int error;
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_list_vp(vp, EXTATTR_NAMESPACE_USER,
|
|
SCARG(uap, list), SCARG(uap, size), l, retval);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_removexattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_removexattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(const char *) name;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_delete_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, l);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_lremovexattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_lremovexattr_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(const char *) name;
|
|
} */ *uap = v;
|
|
struct nameidata nd;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), l);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = extattr_delete_vp(nd.ni_vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, l);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_fremovexattr(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_fremovexattr_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(const char *) name;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
char attrname[XATTR_NAME_MAX];
|
|
int error;
|
|
|
|
error = copyinstr(SCARG(uap, name), attrname, sizeof(attrname),
|
|
NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = getvnode(l->l_proc->p_fd, SCARG(uap, fd), &fp);
|
|
if (error)
|
|
return (error);
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
error = extattr_delete_vp(vp, EXTATTR_NAMESPACE_USER,
|
|
attrname, l);
|
|
|
|
FILE_UNUSE(fp, l);
|
|
return (error);
|
|
}
|