155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/* @(#)fcntlcom.h 1.1 94/10/31 SMI; from UCB fcntl.h 5.2 1/8/86 */
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef __sys_fcntlcom_h
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#define __sys_fcntlcom_h
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/*
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* Rewack the FXXXXX values as _FXXXX so that _POSIX_SOURCE works.
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*/
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#define _FOPEN (-1) /* from sys/file.h, kernel use only */
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#define _FREAD 0x0001 /* read enabled */
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#define _FWRITE 0x0002 /* write enabled */
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#define _FNDELAY 0x0004 /* non blocking I/O (4.2 style) */
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#define _FAPPEND 0x0008 /* append (writes guaranteed at the end) */
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#define _FSETBLK 0x0010 /* use block offsets */
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#define _FASYNC 0x0040 /* signal pgrp when data ready */
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#define _FSHLOCK 0x0080 /* BSD flock() shared lock present */
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#define _FEXLOCK 0x0100 /* BSD flock() exclusive lock present */
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#define _FCREAT 0x0200 /* open with file create */
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#define _FTRUNC 0x0400 /* open with truncation */
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#define _FEXCL 0x0800 /* error on open if file exists */
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#define _FNBIO 0x1000 /* non blocking I/O (sys5 style) */
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#define _FSYNC 0x2000 /* do all writes synchronously */
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#define _FNONBLOCK 0x4000 /* non blocking I/O (POSIX style) */
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#define _FNOCTTY 0x8000 /* don't assign a ctty on this open */
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#define _FMARK 0x10000 /* internal; mark during gc() */
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#define _FDEFER 0x20000 /* internal; defer for next gc pass */
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#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
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/*
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* Flag values for open(2) and fcntl(2)
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* The kernel adds 1 to the open modes to turn it into some
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* combination of FREAD and FWRITE.
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*/
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#define O_RDONLY 0 /* +1 == FREAD */
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#define O_WRONLY 1 /* +1 == FWRITE */
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#define O_RDWR 2 /* +1 == FREAD|FWRITE */
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#define O_APPEND _FAPPEND
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#define O_CREAT _FCREAT
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#define O_TRUNC _FTRUNC
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#define O_EXCL _FEXCL
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/* O_SYNC _FSYNC not posix, defined below */
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/* O_NDELAY _FNDELAY set in include/fcntl.h */
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/* O_NDELAY _FNBIO set in 5include/fcntl.h */
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#define O_NONBLOCK _FNONBLOCK
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#define O_NOCTTY _FNOCTTY
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#ifndef _POSIX_SOURCE
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#define O_SYNC _FSYNC
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/*
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* Flags that work for fcntl(fd, F_SETFL, FXXXX)
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*/
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#define FAPPEND _FAPPEND
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#define FSYNC _FSYNC
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#define FASYNC _FASYNC
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#define FNBIO _FNBIO
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#define FNONBIO _FNONBLOCK /* XXX fix to be NONBLOCK everywhere */
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#define FNDELAY _FNDELAY
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/*
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* Flags that are disallowed for fcntl's (FCNTLCANT);
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* used for opens, internal state, or locking.
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*/
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#define FREAD _FREAD
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#define FWRITE _FWRITE
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#define FMARK _FMARK
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#define FDEFER _FDEFER
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#define FSETBLK _FSETBLK
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#define FSHLOCK _FSHLOCK
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#define FEXLOCK _FEXLOCK
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/*
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* The rest of the flags, used only for opens
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*/
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#define FOPEN _FOPEN
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#define FCREAT _FCREAT
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#define FTRUNC _FTRUNC
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#define FEXCL _FEXCL
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#define FNOCTTY _FNOCTTY
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#endif !_POSIX_SOURCE
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/* XXX close on exec request; must match UF_EXCLOSE in user.h */
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#define FD_CLOEXEC 1 /* posix */
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/* fcntl(2) requests */
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#define F_DUPFD 0 /* Duplicate fildes */
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#define F_GETFD 1 /* Get fildes flags (close on exec) */
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#define F_SETFD 2 /* Set fildes flags (close on exec) */
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#define F_GETFL 3 /* Get file flags */
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#define F_SETFL 4 /* Set file flags */
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#ifndef _POSIX_SOURCE
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#define F_GETOWN 5 /* Get owner - for ASYNC */
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#define F_SETOWN 6 /* Set owner - for ASYNC */
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#endif /* !_POSIX_SOURCE */
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#define F_GETLK 7 /* Get record-locking information */
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#define F_SETLK 8 /* Set or Clear a record-lock (Non-Blocking) */
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#define F_SETLKW 9 /* Set or Clear a record-lock (Blocking) */
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#ifndef _POSIX_SOURCE
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#define F_RGETLK 10 /* Test a remote lock to see if it is blocked */
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#define F_RSETLK 11 /* Set or unlock a remote lock */
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#define F_CNVT 12 /* Convert a fhandle to an open fd */
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#define F_RSETLKW 13 /* Set or Clear remote record-lock(Blocking) */
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#endif /* !_POSIX_SOURCE */
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/* fcntl(2) flags (l_type field of flock structure) */
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#define F_RDLCK 1 /* read lock */
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#define F_WRLCK 2 /* write lock */
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#define F_UNLCK 3 /* remove lock(s) */
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#ifndef _POSIX_SOURCE
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#define F_UNLKSYS 4 /* remove remote locks for a given system */
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#endif /* !_POSIX_SOURCE */
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#include <sys/stdtypes.h>
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/* file segment locking set data type - information passed to system by user */
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struct flock {
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short l_type; /* F_RDLCK, F_WRLCK, or F_UNLCK */
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short l_whence; /* flag to choose starting offset */
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long l_start; /* relative offset, in bytes */
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long l_len; /* length, in bytes; 0 means lock to EOF */
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pid_t l_pid; /* returned with F_GETLK */
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};
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#ifndef _POSIX_SOURCE
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/* extended file segment locking set data type */
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struct eflock {
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short l_type; /* F_RDLCK, F_WRLCK, or F_UNLCK */
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short l_whence; /* flag to choose starting offset */
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long l_start; /* relative offset, in bytes */
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long l_len; /* length, in bytes; 0 means lock to EOF */
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short l_pid; /* returned with F_GETLK */
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short l_xxx; /* reserved for future use */
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long l_rpid; /* Remote process id wanting this lock */
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long l_rsys; /* Remote system id wanting this lock */
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};
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#endif /* !_POSIX_SOURCE */
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#ifndef KERNEL
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#include <sys/stat.h> /* sigh. for the mode bits for open/creat */
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int open(/* char *path, int flags, mode_t modes */);
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int creat(/* char *path, mode_t modes */);
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int fcntl(/* int fd, cmd, ... */);
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#endif /* !KERNEL */
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#endif /* !__sys_fcntlcom_h */
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