/*
* Copyright (c) 2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
/*
* 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.
*/
#ifndef __SYS_FILE_H
#define __SYS_FILE_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef KERNEL
/*
* Descriptor table entry.
* One for each kernel object.
*/
struct file {
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 (vnode/socket) */
off_t f_offset;
struct ucred *f_cred; /* credentials of user who opened file */
};
struct file *file, *fileNFILE;
int nfile;
struct file *getf();
struct file *falloc();
#endif /* KERNEL */
#include <sys/fcntlcom.h>
/*
* bits to save after an open. The no delay bits mean "don't wait for
* carrier at open" in all cases. Sys5 & POSIX save the no delay bits,
* using them to also mean "don't block on reads"; BSD has you reset it
* with an fcntl() if you want the "don't block on reads" behavior.
*/
#define FMASK (FREAD|FWRITE|FAPPEND|FSYNC|FNBIO|FNONBIO)
#define FCNTLCANT (FREAD|FWRITE|FMARK|FDEFER|FSHLOCK|FEXLOCK)
/*
* User definitions.
*/
/*
* 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 */
/*
* Access call. Also maintained in unistd.h
*/
#define F_OK 0 /* does file exist */
#define X_OK 1 /* is it executable by caller */
#define W_OK 2 /* writable by caller */
#define R_OK 4 /* readable by caller */
/*
* Lseek call. Also maintained in 5include/stdio.h and sys/unistd.h as SEEK_*
*/
#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
#define GETF(fp, fd) { \
if ((fd) < 0 || (fd) > u.u_lastfile || \
((fp) = u.u_ofile[fd]) == NULL) { \
u.u_error = EBADF; \
return; \
} \
}
#define DTYPE_VNODE 1 /* file */
#define DTYPE_SOCKET 2 /* communications endpoint */
#endif /* KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* __SYS_FILE_H */