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/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* HISTORY
* 7-Jan-93 Mac Gillon (mgillon) at NeXT
* Integrated POSIX support
*
* 11-Aug-87 Peter King (king) at NeXT
* SUN_VFS: Added f_cred pointer to user's credentials
* Moved fcntl and open flag defines to fcntl.h
*
* 25-Jan-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Upgraded to 4.3.
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)file.h 7.1 (Berkeley) 6/4/86
*/
/* @(#)file.h 2.1 88/05/18 4.0NFSSRC SMI; from UCB 7.1 06/04/86 */
#import <sys/fcntl.h>
#ifdef KERNEL_FILE
#define KERNEL
#endif
#ifdef KERNEL
#import <kernserv/queue.h>
/*
* Descriptor table entry.
* One for each kernel object.
*/
struct file {
queue_chain_t links; /* links for list of all files */
int f_flag; /* see below */
short f_type; /* descriptor type */
short f_count; /* reference count */
short f_msgcount; /* references from message queue */
struct fileops {
int (*fo_rw)();
int (*fo_ioctl)();
int (*fo_select)();
int (*fo_close)();
} *f_ops;
caddr_t f_data; /* ptr to file specific struct ([iv]node/socket) */
off_t f_offset;
/*VFS*/ struct ucred *f_cred; /* credentials of user who opened file */
};
queue_head_t file_list;
struct file *getf();
struct file *falloc();
#endif
/*
* flags- also for fcntl call. (VFS: see also fcntl.h)
*/
#define FOPEN (-1)
#define FREAD 00001 /* descriptor read/receive'able */
#define FWRITE 00002 /* descriptor write/send'able */
#define FMARK 00020 /* mark during gc() */
#define FDEFER 00040 /* defer for next gc pass */
#define FSHLOCK 00200 /* shared lock present */
#define FEXLOCK 00400 /* exclusive lock present */
#if POSIX_KERN
/*
* POSIX behavior: When read() or write() is called on a pipe and the pipe is
* supposed to block and the O_NONBLOCK flag is set, then
* the function will return -1 and set errno to EAGAIN.
* On the NeXT, errno is set to EWOULDBLOCK.
*
* Since pipes on the NeXT are implemented using sockets, we need to
* differentiate between sockets and pipes. The following constant is
* used internally for such purpose.
*/
#define FPOSIX_PIPE 020000
#endif /* POSIX_KERN */
/* bits to save after open */
#define FMASK 00113
#if POSIX_KERN
#define FCNTLCANT (FREAD|FWRITE|FMARK|FDEFER|FSHLOCK|FEXLOCK|FPOSIX_PIPE)
#else
#define FCNTLCANT (FREAD|FWRITE|FMARK|FDEFER|FSHLOCK|FEXLOCK)
#endif /* POSIX_KERN */
/*
* User calls
*/
/*
* Flock call.
*/
#define LOCK_SH 1 /* shared lock */
#define LOCK_EX 2 /* exclusive lock */
#define LOCK_NB 4 /* don't block when locking */
#define LOCK_UN 8 /* unlock */
/*
* Lseek call.
*/
#define L_SET 0 /* absolute offset */
#define L_INCR 1 /* relative to current offset */
#define L_XTND 2 /* relative to end of file */
#ifdef KERNEL
#if NeXT
#define FPINPROGRESS ((void *)0xffff0000)
#define GETF(fp, fd) { \
if ((unsigned)(fd) >= u.u_ofile_cnt || ((fp) = u.u_ofile[fd]) == NULL || \
(fp == (struct file *)FPINPROGRESS)) { \
u.u_error = EBADF; \
return; \
} \
}
#else
#define GETF(fp, fd) { \
if ((unsigned)(fd) >= NOFILE || ((fp) = u.u_ofile[fd]) == NULL) { \
u.u_error = EBADF; \
return; \
} \
}
#endif
#define DTYPE_VNODE 1 /* file */
#define DTYPE_SOCKET 2 /* communications endpoint */
#endif
#ifdef KERNEL_FILE
#undef KERNEL
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.