diff options
author | Joel Sherrill <joel.sherrill@oarcorp.com> | 2012-03-07 09:52:04 -0600 |
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committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2012-03-07 09:52:04 -0600 |
commit | a9153ec3040f54fa52b68e14dafed2aba7b780ae (patch) | |
tree | fda80e3380dfebf7d97868507aa185757852e882 /rtems/freebsd/sys/fcntl.h | |
download | rtems-libbsd-a9153ec3040f54fa52b68e14dafed2aba7b780ae.tar.bz2 |
Initial import
Code is based on FreeBSD 8.2 with USB support from Sebastian Huber
and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.
Diffstat (limited to 'rtems/freebsd/sys/fcntl.h')
-rw-r--r-- | rtems/freebsd/sys/fcntl.h | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/rtems/freebsd/sys/fcntl.h b/rtems/freebsd/sys/fcntl.h new file mode 100644 index 00000000..45e87ba4 --- /dev/null +++ b/rtems/freebsd/sys/fcntl.h @@ -0,0 +1,296 @@ +/*- + * Copyright (c) 1983, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)fcntl.h 8.3 (Berkeley) 1/21/94 + * $FreeBSD$ + */ + +#ifndef _SYS_FCNTL_HH_ +#define _SYS_FCNTL_HH_ + +/* + * This file includes the definitions for open and fcntl + * described by POSIX for <fcntl.h>; it also includes + * related kernel definitions. + */ + +#include <rtems/freebsd/sys/cdefs.h> +#include <rtems/freebsd/sys/_types.h> + +#ifndef _MODE_T_DECLARED +typedef __mode_t mode_t; +#define _MODE_T_DECLARED +#endif + +#ifndef _OFF_T_DECLARED +typedef __off_t off_t; +#define _OFF_T_DECLARED +#endif + +#ifndef _PID_T_DECLARED +typedef __pid_t pid_t; +#define _PID_T_DECLARED +#endif + +/* + * File status flags: these are used by open(2), fcntl(2). + * They are also used (indirectly) in the kernel file structure f_flags, + * which is a superset of the open/fcntl flags. Open flags and f_flags + * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags). + * Open/fcntl flags begin with O_; kernel-internal flags begin with F. + */ +/* open-only flags */ +#define O_RDONLY 0x0000 /* open for reading only */ +#define O_WRONLY 0x0001 /* open for writing only */ +#define O_RDWR 0x0002 /* open for reading and writing */ +#define O_ACCMODE 0x0003 /* mask for above modes */ + +/* + * Kernel encoding of open mode; separate read and write bits that are + * independently testable: 1 greater than the above. + * + * XXX + * FREAD and FWRITE are excluded from the #ifdef _KERNEL so that TIOCFLUSH, + * which was documented to use FREAD/FWRITE, continues to work. + */ +#if __BSD_VISIBLE +#define FREAD 0x0001 +#define FWRITE 0x0002 +#endif +#define O_NONBLOCK 0x0004 /* no delay */ +#define O_APPEND 0x0008 /* set append mode */ +#if __BSD_VISIBLE +#define O_SHLOCK 0x0010 /* open with shared file lock */ +#define O_EXLOCK 0x0020 /* open with exclusive file lock */ +#define O_ASYNC 0x0040 /* signal pgrp when data ready */ +#define O_FSYNC 0x0080 /* synchronous writes */ +#endif +#define O_SYNC 0x0080 /* POSIX synonym for O_FSYNC */ +#if __BSD_VISIBLE +#define O_NOFOLLOW 0x0100 /* don't follow symlinks */ +#endif +#define O_CREAT 0x0200 /* create if nonexistent */ +#define O_TRUNC 0x0400 /* truncate to zero length */ +#define O_EXCL 0x0800 /* error if already exists */ +#ifdef _KERNEL +#define FHASLOCK 0x4000 /* descriptor holds advisory lock */ +#endif + +/* Defined by POSIX 1003.1; BSD default, but must be distinct from O_RDONLY. */ +#define O_NOCTTY 0x8000 /* don't assign controlling terminal */ + +#if __BSD_VISIBLE +/* Attempt to bypass buffer cache */ +#define O_DIRECT 0x00010000 +#endif + +/* Defined by POSIX Extended API Set Part 2 */ +#if __BSD_VISIBLE +#define O_DIRECTORY 0x00020000 /* Fail if not directory */ +#define O_EXEC 0x00040000 /* Open for execute only */ +#endif +#ifdef _KERNEL +#define FEXEC O_EXEC +#endif + +/* Defined by POSIX 1003.1-2008; BSD default, but reserve for future use. */ +#if __POSIX_VISIBLE >= 200809 +#define O_TTY_INIT 0x00080000 /* Restore default termios attributes */ +#endif + +/* + * XXX missing O_DSYNC, O_RSYNC. + */ + +#ifdef _KERNEL +/* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */ +#define FFLAGS(oflags) ((oflags) + 1) +#define OFLAGS(fflags) ((fflags) - 1) + +/* bits to save after open */ +#define FMASK (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FNONBLOCK|O_DIRECT|FEXEC) +/* bits settable by fcntl(F_SETFL, ...) */ +#define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FNONBLOCK|FRDAHEAD|O_DIRECT) + +#if defined(COMPAT_FREEBSD7) || defined(COMPAT_FREEBSD6) || \ + defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) +/* + * Set by shm_open(3) in older libc's to get automatic MAP_ASYNC + * behavior for POSIX shared memory objects (which are otherwise + * implemented as plain files). + */ +#define FPOSIXSHM O_NOFOLLOW +#undef FCNTLFLAGS +#define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FNONBLOCK|FPOSIXSHM|FRDAHEAD| \ + O_DIRECT) +#endif +#endif + +/* + * The O_* flags used to have only F* names, which were used in the kernel + * and by fcntl. We retain the F* names for the kernel f_flag field + * and for backward compatibility for fcntl. These flags are deprecated. + */ +#if __BSD_VISIBLE +#define FAPPEND O_APPEND /* kernel/compat */ +#define FASYNC O_ASYNC /* kernel/compat */ +#define FFSYNC O_FSYNC /* kernel */ +#define FNONBLOCK O_NONBLOCK /* kernel */ +#define FNDELAY O_NONBLOCK /* compat */ +#define O_NDELAY O_NONBLOCK /* compat */ +#endif + +/* + * We are out of bits in f_flag (which is a short). However, + * the flag bits not set in FMASK are only meaningful in the + * initial open syscall. Those bits can thus be given a + * different meaning for fcntl(2). + */ +#if __BSD_VISIBLE +/* Read ahead */ +#define FRDAHEAD O_CREAT +#endif + +/* Defined by POSIX Extended API Set Part 2 */ +#if __BSD_VISIBLE +/* + * Magic value that specify the use of the current working directory + * to determine the target of relative file paths in the openat() and + * similar syscalls. + */ +#define AT_FDCWD -100 + +/* + * Miscellaneous flags for the *at() syscalls. + */ +#define AT_EACCESS 0x100 /* Check access using effective user and group ID */ +#define AT_SYMLINK_NOFOLLOW 0x200 /* Do not follow symbolic links */ +#define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic link */ +#define AT_REMOVEDIR 0x800 /* Remove directory instead of file */ +#endif + +/* + * Constants used for fcntl(2) + */ + +/* command values */ +#define F_DUPFD 0 /* duplicate file descriptor */ +#define F_GETFD 1 /* get file descriptor flags */ +#define F_SETFD 2 /* set file descriptor flags */ +#define F_GETFL 3 /* get file status flags */ +#define F_SETFL 4 /* set file status flags */ +#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112 +#define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */ +#define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */ +#endif +#define F_OGETLK 7 /* get record locking information */ +#define F_OSETLK 8 /* set record locking information */ +#define F_OSETLKW 9 /* F_SETLK; wait if blocked */ +#define F_DUP2FD 10 /* duplicate file descriptor to arg */ +#define F_GETLK 11 /* get record locking information */ +#define F_SETLK 12 /* set record locking information */ +#define F_SETLKW 13 /* F_SETLK; wait if blocked */ +#define F_SETLK_REMOTE 14 /* debugging support for remote locks */ +#define F_READAHEAD 15 /* read ahead */ +#define F_RDAHEAD 16 /* Darwin compatible read ahead */ + +/* file descriptor flags (F_GETFD, F_SETFD) */ +#define FD_CLOEXEC 1 /* close-on-exec flag */ + +/* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */ +#define F_RDLCK 1 /* shared or read lock */ +#define F_UNLCK 2 /* unlock */ +#define F_WRLCK 3 /* exclusive or write lock */ +#define F_UNLCKSYS 4 /* purge locks for a given system ID */ +#define F_CANCEL 5 /* cancel an async lock request */ +#ifdef _KERNEL +#define F_WAIT 0x010 /* Wait until lock is granted */ +#define F_FLOCK 0x020 /* Use flock(2) semantics for lock */ +#define F_POSIX 0x040 /* Use POSIX semantics for lock */ +#define F_REMOTE 0x080 /* Lock owner is remote NFS client */ +#define F_NOINTR 0x100 /* Ignore signals when waiting */ +#endif + +/* + * Advisory file segment locking data type - + * information passed to system by user + */ +struct flock { + off_t l_start; /* starting offset */ + off_t l_len; /* len = 0 means until end of file */ + pid_t l_pid; /* lock owner */ + short l_type; /* lock type: read/write, etc. */ + short l_whence; /* type of l_start */ + int l_sysid; /* remote system id or zero for local */ +}; + +/* + * Old advisory file segment locking data type, + * before adding l_sysid. + */ +struct oflock { + off_t l_start; /* starting offset */ + off_t l_len; /* len = 0 means until end of file */ + pid_t l_pid; /* lock owner */ + short l_type; /* lock type: read/write, etc. */ + short l_whence; /* type of l_start */ +}; + + +#if __BSD_VISIBLE +/* lock operations for flock(2) */ +#define LOCK_SH 0x01 /* shared file lock */ +#define LOCK_EX 0x02 /* exclusive file lock */ +#define LOCK_NB 0x04 /* don't block when locking */ +#define LOCK_UN 0x08 /* unlock file */ +#endif + +/* + * XXX missing posix_fadvise() and posix_fallocate(), and POSIX_FADV_* macros. + */ + +#ifndef _KERNEL +__BEGIN_DECLS +int open(const char *, int, ...); +int creat(const char *, mode_t); +int fcntl(int, int, ...); +#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 +int openat(int, const char *, int, ...); +#endif +#if __BSD_VISIBLE +int flock(int, int); +#endif +__END_DECLS +#endif + +#endif /* !_SYS_FCNTL_HH_ */ |