/*
* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright 1997,1998 Julian Elischer. All rights reserved.
*
* devfsdefs.h
*/
+/*
+ * NOTICE: This file was modified by McAfee Research in 2004 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
/*
* HISTORY
#include <sys/appleapiopts.h>
+#include <security/mac.h>
+
#ifdef __APPLE_API_PRIVATE
#define DEVMAXNAMESIZE 32 /* XXX */
#define DEVMAXPATHSIZE 128 /* XXX */
}Slnk;
};
-#define DN_ACCESS 0x0001 /* Access time update request. */
-#define DN_CHANGE 0x0002 /* Inode change time update request. */
-#define DN_UPDATE 0x0004 /* Modification time update request. */
-#define DN_MODIFIED 0x0008 /* Inode has been modified. */
-#define DN_RENAME 0x0010 /* Inode is being renamed. */
-
struct devnode
{
devfstype_t dn_type;
struct vnode * dn_vn; /* address of last vnode that represented us */
int dn_len; /* of any associated info (e.g. dir data) */
devdirent_t * dn_linklist;/* circular list of hardlinks to this node */
- devdirent_t * dn_last_lookup; /* name I was last looked up from */
devnode_t * dn_nextsibling; /* the list of equivalent nodes */
devnode_t * * dn_prevsiblingp;/* backpointer for the above */
devnode_type_t dn_typeinfo;
int dn_delete; /* mark for deletion */
+ int dn_change;
+ int dn_update;
+ int dn_access;
+ int dn_lflags;
+ int (*dn_clone)(dev_t dev, int action); /* get minor # */
+ struct label * dn_label; /* security label */
};
+#define DN_BUSY 0x01
+#define DN_DELETE 0x02
+#define DN_CREATE 0x04
+#define DN_CREATEWAIT 0x08
+
+
struct devdirent
{
/*-----------------------directory entry fields-------------*/
};
extern devdirent_t * dev_root;
-extern struct lock__bsd__ devfs_lock;
extern struct devfs_stats devfs_stats;
+extern lck_mtx_t devfs_mutex;
/*
* Rules for front nodes:
*/
#include <sys/lock.h>
#include <miscfs/devfs/devfs_proto.h>
+#include <libkern/OSAtomic.h> /* required for OSAddAtomic() */
//#define HIDDEN_MOUNTPOINT 1
#define VTODN(vp) ((devnode_t *)(vp)->v_data)
-static __inline__ int
-DEVFS_LOCK(struct proc * p)
-{
- return (lockmgr(&devfs_lock, LK_EXCLUSIVE, NULL, p));
-}
+#define DEVFS_LOCK() lck_mtx_lock(&devfs_mutex)
+
+#define DEVFS_UNLOCK() lck_mtx_unlock(&devfs_mutex)
-static __inline__ int
-DEVFS_UNLOCK(struct proc * p)
-{
- return (lockmgr(&devfs_lock, LK_RELEASE, NULL, p));
-}
+/*
+ * XXX all the (SInt32 *) casts below assume sizeof(int) == sizeof(long)
+ */
static __inline__ void
-DEVFS_INCR_ENTRIES()
+DEVFS_INCR_ENTRIES(void)
{
- devfs_stats.entries++;
+ OSAddAtomic(1, (SInt32 *)&devfs_stats.entries);
}
static __inline__ void
-DEVFS_DECR_ENTRIES()
+DEVFS_DECR_ENTRIES(void)
{
- devfs_stats.entries--;
+ OSAddAtomic(-1, (SInt32 *)&devfs_stats.entries);
}
static __inline__ void
-DEVFS_INCR_NODES()
+DEVFS_INCR_NODES(void)
{
- devfs_stats.nodes++;
+ OSAddAtomic(1, (SInt32 *)&devfs_stats.nodes);
}
static __inline__ void
-DEVFS_DECR_NODES()
+DEVFS_DECR_NODES(void)
{
- devfs_stats.nodes--;
+ OSAddAtomic(-1, (SInt32 *)&devfs_stats.nodes);
}
static __inline__ void
-DEVFS_INCR_MOUNTS()
+DEVFS_INCR_MOUNTS(void)
{
- devfs_stats.mounts++;
+ OSAddAtomic(1, (SInt32 *)&devfs_stats.mounts);
}
static __inline__ void
-DEVFS_DECR_MOUNTS()
+DEVFS_DECR_MOUNTS(void)
{
- devfs_stats.mounts--;
+ OSAddAtomic(-1, (SInt32 *)&devfs_stats.mounts);
}
static __inline__ void
DEVFS_INCR_STRINGSPACE(int space)
{
- devfs_stats.stringspace += space;
+ OSAddAtomic(space, (SInt32 *)&devfs_stats.stringspace);
}
static __inline__ void
DEVFS_DECR_STRINGSPACE(int space)
{
- devfs_stats.stringspace -= space;
- if (devfs_stats.stringspace < 0) {
- printf("DEVFS_DECR_STRINGSPACE: (%d - %d < 0)\n",
- devfs_stats.stringspace + space, space);
- devfs_stats.stringspace = 0;
- }
+ OSAddAtomic(-space, (SInt32 *)&devfs_stats.stringspace);
}
static __inline__ void
-dn_times(devnode_t * dnp, struct timeval t1, struct timeval t2)
+dn_times(devnode_t * dnp, struct timeval *t1, struct timeval *t2, struct timeval *t3)
{
- if (dnp->dn_flags & (DN_ACCESS | DN_CHANGE | DN_UPDATE)) {
- if (dnp->dn_flags & DN_ACCESS) {
- dnp->dn_atime.tv_sec = t1.tv_sec;
- dnp->dn_atime.tv_nsec = t1.tv_usec * 1000;
+ if (dnp->dn_access) {
+ dnp->dn_atime.tv_sec = t1->tv_sec;
+ dnp->dn_atime.tv_nsec = t1->tv_usec * 1000;
+ dnp->dn_access = 0;
}
- if (dnp->dn_flags & DN_UPDATE) {
- dnp->dn_mtime.tv_sec = t2.tv_sec;
- dnp->dn_mtime.tv_nsec = t2.tv_usec * 1000;
+ if (dnp->dn_update) {
+ dnp->dn_mtime.tv_sec = t2->tv_sec;
+ dnp->dn_mtime.tv_nsec = t2->tv_usec * 1000;
+ dnp->dn_update = 0;
}
- if (dnp->dn_flags & DN_CHANGE) {
- dnp->dn_ctime.tv_sec = time.tv_sec;
- dnp->dn_ctime.tv_nsec = time.tv_usec * 1000;
+ if (dnp->dn_change) {
+ dnp->dn_ctime.tv_sec = t3->tv_sec;
+ dnp->dn_ctime.tv_nsec = t3->tv_usec * 1000;
+ dnp->dn_change = 0;
}
- dnp->dn_flags &= ~(DN_ACCESS | DN_CHANGE | DN_UPDATE);
- }
- return;
+
+ return;
}
static __inline__ void
projects / apple / xnu.git / blobdiff