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authorJoel Sherrill <joel.sherrill@oarcorp.com>2012-03-07 09:52:04 -0600
committerJoel Sherrill <joel.sherrill@oarcorp.com>2012-03-07 09:52:04 -0600
commita9153ec3040f54fa52b68e14dafed2aba7b780ae (patch)
treefda80e3380dfebf7d97868507aa185757852e882 /rtems/freebsd/sys/fcntl.h
downloadrtems-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')
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1 files changed, 296 insertions, 0 deletions
diff --git a/rtems/freebsd/sys/fcntl.h b/rtems/freebsd/sys/fcntl.h
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+/*-
+ * 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_ */