BSD 4_3_Net_2 release

[unix-history] / usr / src / sys / sys / file.h

diff --git a/usr/src/sys/sys/file.h b/usr/src/sys/sys/file.h
index 0d47523..31f1989 100644 (file)
--- a/usr/src/sys/sys/file.h
+++ b/usr/src/sys/sys/file.h
@@ -2,34 +2,49 @@
  * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
  * All rights reserved.
  *
  * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
  * All rights reserved.
  *

- * Redistribution is only permitted until one year after the first shipment
- * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
- * binary forms are permitted provided that: (1) source distributions retain
- * this entire copyright notice and comment, and (2) distributions including
- * binaries display the following acknowledgement:  This product includes
- * software developed by the University of California, Berkeley and its
- * contributors'' in the documentation or other materials provided with the
- * distribution and in all advertising materials mentioning features or use
- * of this software.  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 AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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 University of
+ *     California, Berkeley and its contributors.
+ * 4. 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.

  *
  *

- *     @(#)file.h      7.6 (Berkeley) 6/28/90
+ * 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.
+ *
+ *     @(#)file.h      7.10 (Berkeley) 6/4/91

  */
 
  */
 

-#ifdef KERNEL
-#include "fcntl.h"
-#include "unistd.h"
+#include <sys/fcntl.h>
+#include <sys/unistd.h>

 
 

+#ifdef KERNEL

 /*
 /*

- * Descriptor table entry.
- * One for each kernel object.
+ * Kernel descriptor table.
+ * One entry for each open kernel vnode and socket.

  */
 struct file {
  */
 struct file {

-       int     f_flag;         /* see below */
+       struct  file *f_filef;  /* list of active files */
+       struct  file **f_fileb; /* list of active files */
+       short   f_flag;         /* see fcntl.h */

 #define        DTYPE_VNODE     1       /* file */
 #define        DTYPE_SOCKET    2       /* communications endpoint */
        short   f_type;         /* descriptor type */
 #define        DTYPE_VNODE     1       /* file */
 #define        DTYPE_SOCKET    2       /* communications endpoint */
        short   f_type;         /* descriptor type */


@@ -37,46 +52,22 @@ struct file {
        short   f_msgcount;     /* references from message queue */
        struct  ucred *f_cred;  /* credentials associated with descriptor */
        struct  fileops {
        short   f_msgcount;     /* references from message queue */
        struct  ucred *f_cred;  /* credentials associated with descriptor */
        struct  fileops {

-               int     (*fo_read)();
-               int     (*fo_write)();
-               int     (*fo_ioctl)();
-               int     (*fo_select)();
-               int     (*fo_close)();
+               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, int 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;
        } *f_ops;

-       caddr_t f_data;         /* inode */

        off_t   f_offset;
        off_t   f_offset;

+       caddr_t f_data;         /* vnode or socket */

 };
 
 };
 

-struct file *file, *fileNFILE;
-int nfile;
-
-/* convert O_RDONLY/O_WRONLY/O_RDWR to FREAD/FWRITE */
-#define        FOPEN           (-1)
-#define        FREAD           1
-#define        FWRITE          2
-
-/* kernel only versions -- deprecated, should be removed */
-#define        FCREAT          O_CREAT
-#define        FDEFER          O_DEFER
-#define        FEXCL           O_EXCL
-#define        FEXLOCK         O_EXLOCK
-#define        FMARK           O_MARK
-#define        FSHLOCK         O_SHLOCK
-#define        FTRUNC          O_TRUNC
-
-/* bits to save after open */
-#define        FMASK           (FREAD|FWRITE|O_APPEND|O_ASYNC|O_NONBLOCK)
-/* bits not settable by fcntl(F_SETFL, ...) */
-#define        FCNTLCANT       (FREAD|FWRITE|O_DEFER|O_EXLOCK|O_MARK|O_SHLOCK)
-
-#else
-
-#include <sys/fcntl.h>
-#include <sys/unistd.h>
-
-#endif
+extern struct file *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 */

 
 

-/* operation for lseek(2); renamed by POSIX 1003.1 to unistd.h */
-#define        L_SET           0       /* set file offset to offset */
-#define        L_INCR          1       /* set file offset to current plus offset */
-#define        L_XTND          2       /* set file offset to EOF plus offset */
+#endif /* KERNEL */