xnu-1228.0.2.tar.gz

[apple/xnu.git] / bsd / sys / file.h

diff --git a/bsd/sys/file.h b/bsd/sys/file.h
index 9ddd3affe111d925eb2b15f32b0714ccadafadf6..9bf925acb8f25d60e362d80769d100fb3a70e980 100644 (file)
--- a/bsd/sys/file.h
+++ b/bsd/sys/file.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
 /*
@@ -58,55 +64,47 @@
 #ifndef _SYS_FILE_H_
 #define        _SYS_FILE_H_
 
+#include <sys/appleapiopts.h>
+#include <sys/types.h>
 #include <sys/fcntl.h>
 #include <sys/unistd.h>
+#include <sys/queue.h>
+#include <sys/cdefs.h>
 
 #ifdef KERNEL
 #include <sys/queue.h>
-#include <sys/cdefs.h>
+#include <sys/kernel_types.h>
+#endif
 
-struct proc;
-struct uio;
+#ifndef _KAUTH_CRED_T
+#define        _KAUTH_CRED_T
+struct ucred;
+typedef struct ucred *kauth_cred_t;
+#endif /* !_KAUTH_CRED_T */
 
-/*
- * Kernel descriptor table.
- * One entry for each open kernel vnode and socket.
- */
-struct file {
-       LIST_ENTRY(file) f_list;/* list of active files */
+#pragma pack(4)
+
+/* for the compat sake;  */
+struct extern_file {
+       LIST_ENTRY(extern_file) f_list; /* list of active files */
        short   f_flag;         /* see fcntl.h */
-#define        DTYPE_VNODE     1       /* file */
-#define        DTYPE_SOCKET    2       /* communications endpoint */
-#define        DTYPE_PSXSHM    3       /* POSIX Shared memory */
-#define        DTYPE_PSXSEM    4       /* POSIX Semaphores */
        short   f_type;         /* descriptor type */
        short   f_count;        /* reference count */
        short   f_msgcount;     /* references from message queue */
-       struct  ucred *f_cred;  /* credentials associated with descriptor */
-       struct  fileops {
-               int     (*fo_read)      __P((struct file *fp, struct uio *uio,
-                                           struct ucred *cred));
-               int     (*fo_write)     __P((struct file *fp, struct uio *uio,
-                                           struct ucred *cred));
-               int     (*fo_ioctl)     __P((struct file *fp, u_long com,
-                                           caddr_t data, struct proc *p));
-               int     (*fo_select)    __P((struct file *fp, int which,
-                                           struct proc *p));
-               int     (*fo_close)     __P((struct file *fp, struct proc *p));
-       } *f_ops;
+       kauth_cred_t f_cred;    /* credentials associated with descriptor */
+       void * f_ops;
        off_t   f_offset;
-       caddr_t f_data;         /* vnode or socket */
+       caddr_t f_data;         /* vnode or socket or SHM or semaphore */
 };
 
-LIST_HEAD(filelist, file);
-extern struct filelist filehead;       /* head of list of open files */
-extern int maxfiles;                   /* kernel limit on number of open files */
-extern int nfiles;                     /* actual number of open files */
+#pragma pack()
 
+#ifdef KERNEL
 __BEGIN_DECLS
-int fref __P((struct file *)); /* take a reference on file pointer */
-int frele __P((struct file *));        /* release a reference on file pointer */
-int fcount __P((struct file *));       /* returns the reference count */
+int file_socket(int, socket_t *);
+int file_vnode(int, vnode_t *);
+int file_flags(int, int *);
+int file_drop(int);
 __END_DECLS
 
 #endif /* KERNEL */