+++ /dev/null
-/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/* Copyright (c) 1998, Apple Computer, Inc. All rights reserved. */
-/*
- * Change History:
- *
- * 17-Aug-1999 Pat Dirks New today.
- *
- */
-
-#include <mach/mach_types.h>
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/proc.h>
-#include <sys/conf.h>
-#include <sys/mount_internal.h>
-#include <sys/vnode_internal.h>
-#include <sys/malloc.h>
-#include <sys/dirent.h>
-#include <sys/namei.h>
-#include <sys/attr.h>
-#include <sys/time.h>
-#include <sys/uio_internal.h>
-
-#include <sys/vm.h>
-#include <sys/errno.h>
-#include <vfs/vfs_support.h>
-
-#include "synthfs.h"
-
-struct synthfs_direntry_head {
- u_int32_t d_fileno; /* file number of entry */
- u_int16_t d_reclen; /* length of this record */
- u_int8_t d_type; /* file type, see below */
- u_int8_t d_namlen; /* length of string in d_name */
-};
-
-
-#define PATHSEPARATOR '/'
-#define ROOTDIRID 2
-
-
-static int synthfs_insertnode(struct synthfsnode *newnode_sp, struct synthfsnode *parent_sp) {
- struct timeval now;
-
- DBG_ASSERT(parent_sp->s_type == SYNTHFS_DIRECTORY);
-
- TAILQ_INSERT_TAIL(&parent_sp->s_u.d.d_subnodes, newnode_sp, s_sibling);
- ++parent_sp->s_u.d.d_entrycount;
- newnode_sp->s_parent = parent_sp;
-
- parent_sp->s_nodeflags |= IN_CHANGE | IN_MODIFIED;
- microtime(&now);
- synthfs_update(STOV(parent_sp), &now, &now, 0);
-
- return 0;
-}
-
-
-
-static int
-synthfs_newnode(mount_t mp, vnode_t dp, const char *name, unsigned long nodeid,
- mode_t mode, __unused proc_t p, enum vtype vtype, vnode_t *vpp)
-{
- int result;
- struct synthfsnode *sp;
- struct vnode *vp;
- struct timeval now;
- char *nodename;
- struct vnode_fsparam vfsp;
-
- MALLOC(sp, struct synthfsnode *, sizeof(struct synthfsnode), M_SYNTHFS, M_WAITOK);
-
- if (name == NULL) {
- MALLOC(nodename, char *, 1, M_TEMP, M_WAITOK);
- nodename[0] = 0;
- } else {
- MALLOC(nodename, char *, strlen(name) + 1, M_TEMP, M_WAITOK);
- strlcpy(nodename, name, strlen(name) + 1);
- };
-
- /* Initialize the relevant synthfsnode fields: */
- bzero(sp, sizeof(*sp));
- sp->s_nodeid = nodeid;
-
- /* Initialize all times from a consistent snapshot of the clock: */
- microtime(&now);
- sp->s_createtime = now;
- sp->s_accesstime = now;
- sp->s_modificationtime = now;
- sp->s_changetime = now;
- sp->s_name = nodename;
- sp->s_mode = mode;
-
-
- //bzero(&vfsp, sizeof(struct vnode_fsparam));
- vfsp.vnfs_mp = mp;
- vfsp.vnfs_vtype = vtype;
- vfsp.vnfs_str = "synthfs";
- vfsp.vnfs_dvp = 0;
- vfsp.vnfs_fsnode = sp;
- vfsp.vnfs_cnp = 0;
- vfsp.vnfs_vops = synthfs_vnodeop_p;
- vfsp.vnfs_rdev = 0;
- vfsp.vnfs_filesize = 0;
- vfsp.vnfs_flags = VNFS_NOCACHE | VNFS_CANTCACHE;
- vfsp.vnfs_marksystem = 0;
- vfsp.vnfs_markroot = 0;
-
- result = vnode_create(VNCREATE_FLAVOR, VCREATESIZE, &vfsp, &vp);
- if (result != 0) {
- DBG_VOP(("getnewvnode failed with error code %d\n", result));
- FREE(nodename, M_TEMP);
- FREE(sp, M_TEMP);
- return result;
- }
- vnode_ref(vp);
-
- sp->s_vp = vp;
-
- /* If there's a parent directory, update its subnode structures to insert this new node: */
- if (dp) {
- result = synthfs_insertnode(sp, VTOS(dp));
- };
-
- *vpp = vp;
-
- return result;
-}
-
-
-
-int synthfs_remove_entry(struct vnode *vp) {
- struct synthfsnode *sp = VTOS(vp);
- struct synthfsnode *psp = sp->s_parent;
- struct timeval now;
-
- if (psp) {
- TAILQ_REMOVE(&psp->s_u.d.d_subnodes, sp, s_sibling);
- --psp->s_u.d.d_entrycount;
-
- psp->s_nodeflags |= IN_CHANGE | IN_MODIFIED;
- microtime(&now);
- synthfs_update(STOV(psp), &now, &now, 0);
- };
-
- return 0;
-}
-
-
-
-int synthfs_move_rename_entry(struct vnode *source_vp, struct vnode *newparent_vp, char *new_name) {
- struct synthfsnode *source_sp = VTOS(source_vp);
- struct synthfsnode *parent_sp = VTOS(newparent_vp);
- char *new_name_ptr;
- int result = 0;
-
- /* Unlink the entry from its current place: */
- result = synthfs_remove_entry(source_vp);
- if (result) goto err_exit;
-
- /* Change the name as necessary: */
- if (new_name) {
- FREE(source_sp->s_name, M_TEMP);
- MALLOC(new_name_ptr, char *, strlen(new_name) + 1, M_TEMP, M_WAITOK);
- strlcpy(new_name_ptr, new_name, strlen(new_name) + 1);
- source_sp->s_name = new_name_ptr;
- };
-
- /* Insert the entry in its new home: */
- result = synthfs_insertnode(source_sp, parent_sp);
-
-err_exit:
- return result;
-}
-
-
-
-int synthfs_new_directory(struct mount *mp, struct vnode *dp, const char *name, unsigned long nodeid, mode_t mode, struct proc *p, struct vnode **vpp) {
- int result;
- struct vnode *vp;
- struct synthfsnode *sp;
-
- result = synthfs_newnode(mp, dp, name, nodeid, mode, p, VDIR, &vp);
- if (result) {
- return result;
- };
- sp = VTOS(vp);
- sp->s_linkcount = 2;
-
- if (dp) {
- ++VTOS(dp)->s_linkcount; /* Account for the [fictitious] ".." link */
- };
-
- /* Set up the directory-specific fields: */
- sp->s_type = SYNTHFS_DIRECTORY;
- sp->s_u.d.d_entrycount = 0; /* No entries in this directory yet */
- TAILQ_INIT(&sp->s_u.d.d_subnodes); /* No subnodes of this directory yet */
-
- *vpp = vp;
-
- return 0;
-}
-
-
-
-int synthfs_remove_directory(struct vnode *vp) {
- struct synthfsnode *sp = VTOS(vp);
- struct synthfsnode *psp = sp->s_parent;
-
- if (psp && (sp->s_type == SYNTHFS_DIRECTORY) && (psp != sp)) {
- --psp->s_linkcount; /* account for the [fictitious] ".." link now removed */
- };
- vnode_rele(vp);
-
- /* Do the standard cleanup involved in pruning an entry from the filesystem: */
- return synthfs_remove_entry(vp); /* Do whatever standard cleanup is required */
-}
-
-
-
-int
-synthfs_new_symlink(
- struct mount *mp,
- struct vnode *dp,
- const char *name,
- unsigned long nodeid,
- char *targetstring,
- struct proc *p,
- struct vnode **vpp)
-{
- int result;
- struct vnode *vp;
- struct synthfsnode *sp;
-
- result = synthfs_newnode(mp, dp, name, nodeid, 0, p, VLNK, &vp);
- if (result)
- return result;
- sp = VTOS(vp);
- sp->s_linkcount = 1;
-
- /* Set up the symlink-specific fields: */
- sp->s_type = SYNTHFS_SYMLINK;
- sp->s_u.s.s_length = strlen(targetstring);
- MALLOC(sp->s_u.s.s_symlinktarget, char *, sp->s_u.s.s_length + 1,
- M_TEMP, M_WAITOK);
- strlcpy(sp->s_u.s.s_symlinktarget, targetstring,
- sp->s_u.s.s_lenghth + 1);
-
- *vpp = vp;
-
- return 0;
-}
-
-
-
-int synthfs_remove_symlink(struct vnode *vp) {
- struct synthfsnode *sp = VTOS(vp);
-
- FREE(sp->s_u.s.s_symlinktarget, M_TEMP);
- vnode_rele(vp);
-
- /* Do the standard cleanup involved in pruning an entry from the filesystem: */
- return synthfs_remove_entry(vp); /* Do whatever standard cleanup is required */
-}
-
-
-
-
-
-
-long synthfs_adddirentry(u_int32_t fileno, u_int8_t type, const char *name, struct uio *uio) {
- struct synthfs_direntry_head direntry;
- long namelength;
- int padding;
- long padtext = 0;
- unsigned short direntrylength;
-
- namelength = ((name == NULL) ? 0 : strlen(name) + 1);
- padding = (4 - (namelength & 3)) & 3;
- direntrylength = sizeof(struct synthfs_direntry_head) + namelength + padding;
-
- direntry.d_fileno = fileno;
- direntry.d_reclen = direntrylength;
- direntry.d_type = type;
- direntry.d_namlen = namelength;
-
- if (uio_resid(uio) < direntry.d_reclen) {
- direntrylength = 0;
- } else {
- uiomove((caddr_t)(&direntry), sizeof(direntry), uio);
- if (name != NULL) {
- uiomove((caddr_t)name, namelength, uio);
- };
- if (padding > 0) {
- uiomove((caddr_t)&padtext, padding, uio);
- };
- };
-
- return direntrylength;
-}
-
-
projects / apple / xnu.git / blobdiff