X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..5d5c5d0d5b79ade9a973d55186ffda2638ba2b6e:/bsd/sys/file.h diff --git a/bsd/sys/file.h b/bsd/sys/file.h index 711ba77c5..1809f3054 100644 --- a/bsd/sys/file.h +++ b/bsd/sys/file.h @@ -1,23 +1,31 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_LICENSE_OSREFERENCE_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 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. - * - * @APPLE_LICENSE_HEADER_END@ + * 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. + * + * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ */ /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */ /* @@ -59,128 +67,42 @@ #define _SYS_FILE_H_ #include +#include #include #include +#include +#include #ifdef KERNEL -#include #include -#include +#include +#endif -struct proc; -struct uio; -#ifdef __APPLE_API_UNSTABLE +#pragma pack(4) -/* - * 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 */ +#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 */ - -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_ */