Move VFS extended attribute support to its own file.
This commit is contained in:
thorpej
parent
0d4567cd91
commit
76fd10b45a
@ -1,4 +1,4 @@
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# $NetBSD: files,v 1.722 2005/07/01 20:11:20 drochner Exp $
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# $NetBSD: files,v 1.723 2005/07/09 01:05:23 thorpej Exp $
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# @(#)files.newconf 7.5 (Berkeley) 5/10/93
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@ -1298,6 +1298,7 @@ file kern/vfs_lookup.c
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file kern/vfs_subr.c
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file kern/vfs_syscalls.c
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file kern/vfs_vnops.c
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file kern/vfs_xattr.c
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file kern/vnode_if.c
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file miscfs/deadfs/dead_vnops.c
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file miscfs/fifofs/fifo_vnops.c
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@ -1,4 +1,4 @@
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/* $NetBSD: vfs_syscalls.c,v 1.223 2005/06/23 00:30:28 thorpej Exp $ */
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/* $NetBSD: vfs_syscalls.c,v 1.224 2005/07/09 01:05:24 thorpej Exp $ */
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/*
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* Copyright (c) 1989, 1993
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@ -37,7 +37,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.223 2005/06/23 00:30:28 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.224 2005/07/09 01:05:24 thorpej Exp $");
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#include "opt_compat_netbsd.h"
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#include "opt_compat_43.h"
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@ -57,7 +57,6 @@ __KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.223 2005/06/23 00:30:28 thorpej E
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#include <sys/uio.h>
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#include <sys/malloc.h>
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#include <sys/dirent.h>
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#include <sys/extattr.h>
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#include <sys/sysctl.h>
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#include <sys/sa.h>
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#include <sys/syscallargs.h>
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@ -3373,608 +3372,3 @@ getvnode(struct filedesc *fdp, int fd, struct file **fpp)
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*fpp = fp;
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return (0);
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}
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/*
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* Push extended attribute configuration information into the VFS.
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*
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* NOTE: Not all file systems that support extended attributes will
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* require the use of this system call.
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*/
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int
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sys_extattrctl(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattrctl_args /* {
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syscallarg(const char *) path;
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syscallarg(int) cmd;
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syscallarg(const char *) filename;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct vnode *vp;
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struct nameidata nd;
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struct mount *mp;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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if (SCARG(uap, attrname) != NULL) {
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error = copyinstr(SCARG(uap, attrname), attrname,
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sizeof(attrname), NULL);
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if (error)
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return (error);
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}
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vp = NULL;
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if (SCARG(uap, filename) != NULL) {
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NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
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SCARG(uap, filename), p);
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error = namei(&nd);
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if (error)
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return (error);
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vp = nd.ni_vp;
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}
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
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error = namei(&nd);
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if (error) {
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if (vp != NULL)
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vput(vp);
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return (error);
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}
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error = vn_start_write(nd.ni_vp, &mp, V_WAIT | V_PCATCH);
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if (error) {
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if (vp != NULL)
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vput(vp);
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return (error);
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}
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error = VFS_EXTATTRCTL(mp, SCARG(uap, cmd), vp,
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SCARG(uap, attrnamespace),
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SCARG(uap, attrname) != NULL ? attrname : NULL, p);
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vn_finished_write(mp, 0);
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if (vp != NULL)
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vrele(vp);
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return (error);
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}
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/*
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* Set a named extended attribute on a file or directory.
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*/
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static int
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extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
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const void *data, size_t nbytes, struct proc *p, register_t *retval)
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{
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struct mount *mp;
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struct uio auio;
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struct iovec aiov;
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ssize_t cnt;
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int error;
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error = vn_start_write(vp, &mp, V_WAIT | V_PCATCH);
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if (error)
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return (error);
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VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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aiov.iov_base = __UNCONST(data); /* XXXUNCONST kills const */
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aiov.iov_len = nbytes;
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auio.uio_iov = &aiov;
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auio.uio_iovcnt = 1;
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auio.uio_offset = 0;
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if (nbytes > INT_MAX) {
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error = EINVAL;
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goto done;
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}
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auio.uio_resid = nbytes;
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auio.uio_rw = UIO_WRITE;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_procp = p;
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cnt = nbytes;
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error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio,
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p->p_ucred, p);
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cnt -= auio.uio_resid;
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retval[0] = cnt;
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done:
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VOP_UNLOCK(vp, 0);
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vn_finished_write(mp, 0);
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return (error);
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}
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int
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sys_extattr_set_fd(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_set_fd_args /* {
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syscallarg(int) fd;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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syscallarg(const void *) data;
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syscallarg(size_t) nbytes;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct file *fp;
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struct vnode *vp;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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error = getvnode(p->p_fd, SCARG(uap, fd), &fp);
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if (error)
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return (error);
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vp = (struct vnode *) fp->f_data;
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error = extattr_set_vp(vp, SCARG(uap, attrnamespace), attrname,
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SCARG(uap, data), SCARG(uap, nbytes), p, retval);
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FILE_UNUSE(fp, p);
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return (error);
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}
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int
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sys_extattr_set_file(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_set_file_args /* {
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syscallarg(const char *) path;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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syscallarg(const void *) data;
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syscallarg(size_t) nbytes;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
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error = namei(&nd);
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if (error)
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return (error);
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error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
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SCARG(uap, data), SCARG(uap, nbytes), p, retval);
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vrele(nd.ni_vp);
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return (error);
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}
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int
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sys_extattr_set_link(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_set_link_args /* {
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syscallarg(const char *) path;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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syscallarg(const void *) data;
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syscallarg(size_t) nbytes;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
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error = namei(&nd);
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if (error)
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return (error);
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error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
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SCARG(uap, data), SCARG(uap, nbytes), p, retval);
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vrele(nd.ni_vp);
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return (error);
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}
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/*
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* Get a named extended attribute on a file or directory.
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*/
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static int
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extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
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void *data, size_t nbytes, struct proc *p, register_t *retval)
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{
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struct uio auio, *auiop;
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struct iovec aiov;
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ssize_t cnt;
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size_t size, *sizep;
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int error;
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VOP_LEASE(vp, p, p->p_ucred, LEASE_READ);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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/*
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* Slightly unusual semantics: if the user provides a NULL data
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* pointer, they don't want to receive the data, just the maximum
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* read length.
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*/
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auiop = NULL;
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sizep = NULL;
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cnt = 0;
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if (data != NULL) {
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aiov.iov_base = data;
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aiov.iov_len = nbytes;
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auio.uio_iov = &aiov;
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auio.uio_offset = 0;
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if (nbytes > INT_MAX) {
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error = EINVAL;
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goto done;
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}
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auio.uio_resid = nbytes;
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auio.uio_rw = UIO_READ;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_procp = p;
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auiop = &auio;
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cnt = nbytes;
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} else
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sizep = &size;
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error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
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p->p_ucred, p);
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if (auiop != NULL) {
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cnt -= auio.uio_resid;
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retval[0] = cnt;
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} else
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retval[0] = size;
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done:
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VOP_UNLOCK(vp, 0);
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return (error);
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}
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int
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sys_extattr_get_fd(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_get_fd_args /* {
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syscallarg(int) fd;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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syscallarg(void *) data;
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syscallarg(size_t) nbytes;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct file *fp;
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struct vnode *vp;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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error = getvnode(p->p_fd, SCARG(uap, fd), &fp);
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if (error)
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return (error);
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vp = (struct vnode *) fp->f_data;
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error = extattr_get_vp(vp, SCARG(uap, attrnamespace), attrname,
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SCARG(uap, data), SCARG(uap, nbytes), p, retval);
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FILE_UNUSE(fp, p);
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return (error);
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}
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int
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sys_extattr_get_file(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_get_file_args /* {
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syscallarg(const char *) path;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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syscallarg(void *) data;
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syscallarg(size_t) nbytes;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
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error = namei(&nd);
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if (error)
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return (error);
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error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
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SCARG(uap, data), SCARG(uap, nbytes), p, retval);
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vrele(nd.ni_vp);
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return (error);
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}
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int
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sys_extattr_get_link(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_get_link_args /* {
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syscallarg(const char *) path;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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syscallarg(void *) data;
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syscallarg(size_t) nbytes;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
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error = namei(&nd);
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if (error)
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return (error);
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error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
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SCARG(uap, data), SCARG(uap, nbytes), p, retval);
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vrele(nd.ni_vp);
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return (error);
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}
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/*
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* Delete a named extended attribute on a file or directory.
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*/
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static int
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extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
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struct proc *p)
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{
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struct mount *mp;
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int error;
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error = vn_start_write(vp, &mp, V_WAIT | V_PCATCH);
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if (error)
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return (error);
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VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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error = VOP_DELETEEXTATTR(vp, attrnamespace, attrname, p->p_ucred, p);
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if (error == EOPNOTSUPP)
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error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
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p->p_ucred, p);
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VOP_UNLOCK(vp, 0);
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vn_finished_write(mp, 0);
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return (error);
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}
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int
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sys_extattr_delete_fd(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_delete_fd_args /* {
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syscallarg(int) fd;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct file *fp;
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struct vnode *vp;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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error = getvnode(p->p_fd, SCARG(uap, fd), &fp);
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if (error)
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return (error);
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vp = (struct vnode *) fp->f_data;
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error = extattr_delete_vp(vp, SCARG(uap, attrnamespace), attrname, p);
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FILE_UNUSE(fp, p);
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return (error);
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}
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int
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sys_extattr_delete_file(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_extattr_delete_file_args /* {
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syscallarg(const char *) path;
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syscallarg(int) attrnamespace;
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syscallarg(const char *) attrname;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int error;
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error = copyinstr(SCARG(uap, attrname), attrname, sizeof(attrname),
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NULL);
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if (error)
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return (error);
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|
||||
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
p);
|
||||
|
||||
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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
p);
|
||||
|
||||
vrele(nd.ni_vp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
/*
|
||||
* 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 proc *p, register_t *retval)
|
||||
{
|
||||
struct uio auio, *auiop;
|
||||
size_t size, *sizep;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
int error;
|
||||
|
||||
VOP_LEASE(vp, p, p->p_ucred, 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;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_procp = p;
|
||||
auiop = &auio;
|
||||
cnt = nbytes;
|
||||
} else
|
||||
sizep = &size;
|
||||
|
||||
error = VOP_LISTEXTATTR(vp, attrnamespace, auiop, sizep,
|
||||
p->p_ucred, p);
|
||||
|
||||
if (auiop != NULL) {
|
||||
cnt -= auio.uio_resid;
|
||||
retval[0] = cnt;
|
||||
} else
|
||||
retval[0] = size;
|
||||
|
||||
done:
|
||||
VOP_UNLOCK(vp, 0);
|
||||
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 proc *p = l->l_proc;
|
||||
struct file *fp;
|
||||
struct vnode *vp;
|
||||
int error;
|
||||
|
||||
error = getvnode(p->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), p, retval);
|
||||
|
||||
FILE_UNUSE(fp, p);
|
||||
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 proc *p = l->l_proc;
|
||||
struct nameidata nd;
|
||||
int error;
|
||||
|
||||
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, 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 proc *p = l->l_proc;
|
||||
struct nameidata nd;
|
||||
int error;
|
||||
|
||||
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, retval);
|
||||
|
||||
vrele(nd.ni_vp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
682
sys/kern/vfs_xattr.c
Normal file
682
sys/kern/vfs_xattr.c
Normal file
@ -0,0 +1,682 @@
|
||||
/* $NetBSD: vfs_xattr.c,v 1.1 2005/07/09 01:05:24 thorpej Exp $ */
|
||||
|
||||
/*
|
||||
* 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 1.1 2005/07/09 01:05:24 thorpej 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/sysctl.h>
|
||||
#include <sys/sa.h>
|
||||
#include <sys/syscallargs.h>
|
||||
|
||||
/*
|
||||
* Push extended attribute configuration information into the VFS.
|
||||
*
|
||||
* 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 proc *p = l->l_proc;
|
||||
struct vnode *vp;
|
||||
struct nameidata nd;
|
||||
struct mount *mp;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
vp = nd.ni_vp;
|
||||
}
|
||||
|
||||
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
|
||||
error = namei(&nd);
|
||||
if (error) {
|
||||
if (vp != NULL)
|
||||
vput(vp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
error = vn_start_write(nd.ni_vp, &mp, V_WAIT | V_PCATCH);
|
||||
if (error) {
|
||||
if (vp != NULL)
|
||||
vput(vp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
error = VFS_EXTATTRCTL(mp, SCARG(uap, cmd), vp,
|
||||
SCARG(uap, attrnamespace),
|
||||
SCARG(uap, attrname) != NULL ? attrname : NULL, p);
|
||||
|
||||
vn_finished_write(mp, 0);
|
||||
|
||||
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 proc *p, register_t *retval)
|
||||
{
|
||||
struct mount *mp;
|
||||
struct uio auio;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
int error;
|
||||
|
||||
error = vn_start_write(vp, &mp, V_WAIT | V_PCATCH);
|
||||
if (error)
|
||||
return (error);
|
||||
VOP_LEASE(vp, p, p->p_ucred, 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;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_procp = p;
|
||||
cnt = nbytes;
|
||||
|
||||
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio,
|
||||
p->p_ucred, p);
|
||||
cnt -= auio.uio_resid;
|
||||
retval[0] = cnt;
|
||||
|
||||
done:
|
||||
VOP_UNLOCK(vp, 0);
|
||||
vn_finished_write(mp, 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 proc *p, register_t *retval)
|
||||
{
|
||||
struct uio auio, *auiop;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
size_t size, *sizep;
|
||||
int error;
|
||||
|
||||
VOP_LEASE(vp, p, p->p_ucred, 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;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_procp = p;
|
||||
auiop = &auio;
|
||||
cnt = nbytes;
|
||||
} else
|
||||
sizep = &size;
|
||||
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
|
||||
p->p_ucred, p);
|
||||
|
||||
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 proc *p)
|
||||
{
|
||||
struct mount *mp;
|
||||
int error;
|
||||
|
||||
error = vn_start_write(vp, &mp, V_WAIT | V_PCATCH);
|
||||
if (error)
|
||||
return (error);
|
||||
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
|
||||
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
||||
|
||||
error = VOP_DELETEEXTATTR(vp, attrnamespace, attrname, p->p_ucred, p);
|
||||
if (error == EOPNOTSUPP)
|
||||
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
|
||||
p->p_ucred, p);
|
||||
|
||||
VOP_UNLOCK(vp, 0);
|
||||
vn_finished_write(mp, 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 proc *p, register_t *retval)
|
||||
{
|
||||
struct uio auio, *auiop;
|
||||
size_t size, *sizep;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
int error;
|
||||
|
||||
VOP_LEASE(vp, p, p->p_ucred, 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;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_procp = p;
|
||||
auiop = &auio;
|
||||
cnt = nbytes;
|
||||
} else
|
||||
sizep = &size;
|
||||
|
||||
error = VOP_LISTEXTATTR(vp, attrnamespace, auiop, sizep,
|
||||
p->p_ucred, p);
|
||||
|
||||
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 proc *p = l->l_proc;
|
||||
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(p->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), p, retval);
|
||||
|
||||
FILE_UNUSE(fp, p);
|
||||
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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, 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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, 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 proc *p = l->l_proc;
|
||||
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(p->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), p, retval);
|
||||
|
||||
FILE_UNUSE(fp, p);
|
||||
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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, 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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, 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 proc *p = l->l_proc;
|
||||
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(p->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, p);
|
||||
|
||||
FILE_UNUSE(fp, p);
|
||||
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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
p);
|
||||
|
||||
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 proc *p = l->l_proc;
|
||||
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), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
|
||||
p);
|
||||
|
||||
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 proc *p = l->l_proc;
|
||||
struct file *fp;
|
||||
struct vnode *vp;
|
||||
int error;
|
||||
|
||||
error = getvnode(p->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), p, retval);
|
||||
|
||||
FILE_UNUSE(fp, p);
|
||||
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 proc *p = l->l_proc;
|
||||
struct nameidata nd;
|
||||
int error;
|
||||
|
||||
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, 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 proc *p = l->l_proc;
|
||||
struct nameidata nd;
|
||||
int error;
|
||||
|
||||
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = extattr_list_vp(nd.ni_vp, SCARG(uap, attrnamespace),
|
||||
SCARG(uap, data), SCARG(uap, nbytes), p, retval);
|
||||
|
||||
vrele(nd.ni_vp);
|
||||
return (error);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user