xnu-792.6.22.tar.gz

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

diff --git a/bsd/sys/file.h b/bsd/sys/file.h
index 711ba77c5ae4d563da0cd4ba9a958c10311482d4..710159af88312f18c701f7b9eca6659500710e7e 100644 (file)
--- a/bsd/sys/file.h
+++ b/bsd/sys/file.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -59,128 +59,46 @@
 #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/errno.h>
 #include <sys/queue.h>
-#include <sys/cdefs.h>
+#include <sys/kernel_types.h>
+#endif
 
-struct proc;
-struct uio;
-#ifdef __APPLE_API_UNSTABLE
+#if __DARWIN_ALIGN_POWER
+#pragma options align=power
+#endif
 
-/*
- * Kernel descriptor table.
- * One entry for each open kernel vnode and socket.
- */
-struct file {
-       LIST_ENTRY(file) f_list;/* list of active files */
+/* 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 flags,
-                                           struct proc *p));
-               int     (*fo_write)     __P((struct file *fp, struct uio *uio,
-                                           struct ucred *cred, int flags,
-                                           struct proc *p));
-#define        FOF_OFFSET      1
-               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,
-                                               void *wql, struct proc *p));
-               int     (*fo_close)     __P((struct file *fp, struct proc *p));
-       } *f_ops;
+       void * f_ops;
        off_t   f_offset;
        caddr_t f_data;         /* vnode or socket or SHM or semaphore */
 };
 
-#ifdef __APPLE_API_PRIVATE
-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 */
-#endif /* __APPLE_API_PRIVATE */
+#if __DARWIN_ALIGN_POWER
+#pragma options align=reset
+#endif
 
+#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 */
-
-static __inline int fo_read __P((struct file *fp, struct uio *uio,
-       struct ucred *cred, int flags, struct proc *p));
-static __inline int fo_write __P((struct file *fp, struct uio *uio,
-       struct ucred *cred, int flags, struct proc *p));
-static __inline int fo_ioctl __P((struct file *fp, u_long com, caddr_t data,
-       struct proc *p));
-static __inline int fo_select __P((struct file *fp, int which, void *wql,
-       struct proc *p));
-static __inline int fo_close __P((struct file *fp, struct proc *p));
-
-static __inline int
-fo_read(struct file *fp, struct uio *uio, struct ucred *cred, int flags, struct proc *p)
-{
-       int error;
-
-       if ((error = fref(fp)) == -1)
-               return (EBADF);
-       error = (*fp->f_ops->fo_read)(fp, uio, cred, flags, p);
-       frele(fp);
-       return (error);
-}
-
-static __inline int
-fo_write(struct file *fp, struct uio *uio, struct ucred *cred, int flags, struct proc *p)
-{
-       int error;
-
-       if ((error = fref(fp)) == -1)
-               return (EBADF);
-       error = (*fp->f_ops->fo_write)(fp, uio, cred, flags, p);
-       frele(fp);
-       return (error);
-}
-
-static __inline int 
-fo_ioctl(struct file *fp, u_long com, caddr_t data, struct proc *p)
-{
-       int error;   
-
-       if ((error = fref(fp)) == -1)
-               return (EBADF);
-       error = (*fp->f_ops->fo_ioctl)(fp, com, data, p);
-       frele(fp);
-       return (error);
-}       
-
-static __inline int
-fo_select(struct file *fp, int which, void *wql, struct proc *p)
-{       
-       int error;
-
-       error = (*fp->f_ops->fo_select)(fp, which, wql, p);
-       return (error);
-}
-
-static __inline int
-fo_close(struct file *fp, struct proc *p)
-{       
-
-       return ((*fp->f_ops->fo_close)(fp, p));
-}
+int file_socket(int, socket_t *);
+int file_vnode(int, vnode_t *);
+int file_flags(int, int *);
+int file_drop(int);
 __END_DECLS
 
-#endif /* __APPLE_API_UNSTABLE */
-
 #endif /* KERNEL */
 
 #endif /* !_SYS_FILE_H_ */