xnu-1228.tar.gz

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

diff --git a/bsd/sys/filedesc.h b/bsd/sys/filedesc.h
index 63a2543660353caef2e7715818b0c979426b67f4..b9839f3e96eccd40354d772cf7698df243f2eed3 100644 (file)
--- a/bsd/sys/filedesc.h
+++ b/bsd/sys/filedesc.h
@@ -1,16 +1,19 @@
 /*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2003 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
@@ -20,7 +23,7 @@
  * 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 */
 /*
@@ -81,24 +84,44 @@
 #define NDFILE         25              /* 125 bytes */
 #define NDEXTENT       50              /* 250 bytes in 256-byte alloc. */ 
 
+struct klist;
+
 struct filedesc {
-       struct  file **fd_ofiles;       /* file structures for open files */
+       struct  fileproc **fd_ofiles;   /* file structures for open files */
        char    *fd_ofileflags;         /* per-process open file flags */
        struct  vnode *fd_cdir;         /* current directory */
        struct  vnode *fd_rdir;         /* root directory */
        int     fd_nfiles;              /* number of open files allocated */
-       u_short fd_lastfile;            /* high-water mark of fd_ofiles */
-       u_short fd_freefile;            /* approx. next free file */
+       int     fd_lastfile;            /* high-water mark of fd_ofiles */
+       int     fd_freefile;            /* approx. next free file */
        u_short fd_cmask;               /* mask for file creation */
-       u_short fd_refcnt;              /* reference count */
+       u_long  fd_refcnt;              /* reference count */
+
+       int     fd_knlistsize;          /* size of knlist */
+       struct  klist *fd_knlist;       /* list of attached knotes */
+       u_long  fd_knhashmask;          /* size of knhash */
+       struct  klist *fd_knhash;       /* hash table for attached knotes */
+        int    fd_flags;
 };
 
+/*
+ * definitions for fd_flags;
+ */
+#define        FD_CHROOT       0x01    /* process was chrooted... keep track even */
+                                /* if we're force unmounted and unable to */
+                                /* take a vnode_ref on fd_rdir during a fork */
+
 /*
  * Per-process open flags.
  */
 #define        UF_EXCLOSE      0x01            /* auto-close on exec */
-#define        UF_MAPPED       0x02            /* mapped from device */
 #define UF_RESERVED    0x04            /* open pending / in progress */
+#define UF_CLOSING     0x08            /* close in progress */
+
+#ifdef KERNEL
+#define UF_RESVWAIT    0x10            /* close in progress */
+#define UF_VALID_FLAGS (UF_EXCLOSE| UF_RESERVED | UF_CLOSING | UF_RESVWAIT)
+#endif /* KERNEL */
 
 /*
  * Storage required per open file descriptor.
@@ -109,24 +132,22 @@ struct filedesc {
 /*
  * Kernel global variables and routines.
  */
-extern int     dupfdopen __P((struct filedesc *fdp,
-                               int indx, int dfd, int mode, int error));
-extern int     fdalloc __P((struct proc *p, int want, int *result));
-extern void    fdrelse __P((struct proc *p, int fd));
-extern int     fdavail __P((struct proc *p, int n));
-extern int     fdgetf __P((struct proc *p, int fd, struct file **resultfp));
+extern int     dupfdopen(struct filedesc *fdp,
+                               int indx, int dfd, int mode, int error);
+extern int     fdalloc(proc_t p, int want, int *result);
+extern void    fdrelse(proc_t p, int fd);
+extern int     fdavail(proc_t p, int n);
 #define                fdfile(p, fd)                                   \
                        (&(p)->p_fd->fd_ofiles[(fd)])
 #define                fdflags(p, fd)                                  \
                        (&(p)->p_fd->fd_ofileflags[(fd)])
-extern int     falloc __P((struct proc *p,
-                               struct file **resultfp, int *resultfd));
-extern void    ffree __P((struct file *fp));
+extern int     falloc(proc_t p, struct fileproc **resultfp, int *resultfd, vfs_context_t ctx);
+extern void    ffree(struct file *fp);
 
 #ifdef __APPLE_API_PRIVATE
-extern struct  filedesc *fdcopy __P((struct proc *p));
-extern void    fdfree __P((struct proc *p));
-extern void    fdexec __P((struct proc *p));
+extern struct  filedesc *fdcopy(proc_t p, struct vnode *uth_cdir);
+extern void    fdfree(proc_t p);
+extern void    fdexec(proc_t p);
 #endif /* __APPLE_API_PRIVATE */
 
 #endif /* KERNEL */