Changeset 685

Timestamp:

Sep 11, 2003, 3:14:29 AM (22 years ago)

Author:

bird

Message:

#634: Updated to FreeBSD 5.1 (for struct flock and it's #defines). Note that most fcntl cmds (F_*), and some open flags (O_*) have changed value.

File:

• trunk/src/emx/include/sys/fcntl.h (modified) (1 diff, 1 prop)

trunk/src/emx/include/sys/fcntl.h

@@ -1 @@
-/* sys/fcntl.h (emx+gcc) */
-
-#ifndef _SYS_FCNTL_H
-#define _SYS_FCNTL_H
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
-/* Don't forget to update /emx/src/dos/termio.inc when changing this! */
-
-#if !defined (O_RDONLY)
-#define O_ACCMODE       0x03    /* mask */
-#define O_RDONLY        0x00
-#define O_WRONLY        0x01
-#define O_RDWR          0x02
-#define O_NONBLOCK      0x04
-#define O_APPEND        0x08
-#define O_TEXT          0x10
-
+/*-
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 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: src/sys/sys/fcntl.h,v 1.14 2002/09/17 22:22:50 mike Exp $
+ */
+
+/** @file
+ * FreeBSD 5.1 + EMX
+ *
+ * @changed bird: EMX isms.
+ * @changed bird: Removed (non KERNEL) stuff we don't implement and added
+ *          EMX specific stuff.
+ * @todo    Consider implementing the flags and commands we don't currently
+ *          include.
+ */
+
+#ifndef _SYS_FCNTL_H_
+#define _SYS_FCNTL_H_
+#define _SYS_FCNTL_H /* bird: EMX */
+
+/*
+ * This file includes the definitions for open and fcntl
+ * described by POSIX for <fcntl.h>; it also includes
+ * related kernel definitions.
+ */
+
+#include <sys/cdefs.h>
+#include <sys/_types.h>
+
+#if !defined(_MODE_T_DECLARED) && !defined(_MODE_T)                             /* bird: EMX */
+typedef __mode_t        mode_t;
+#define _MODE_T_DECLARED
+#define _MODE_T                                                                 /* bird: EMX */
+#endif
+
+#if !defined(_OFF_T_DECLARED) && !defined(_OFF_T)                               /* bird: EMX */
+typedef __off_t         off_t;
+#define _OFF_T_DECLARED
+#define _OFF_T                                                                  /* bird: EMX */
+#endif
+
+#if !defined(_PID_T_DECLARED) && !defined(_PID_T)                               /* bird: EMX */
+typedef __pid_t         pid_t;
+#define _PID_T_DECLARED
+#define _PID_T                                                                  /* bird: EMX */
+#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
+#ifndef FREAD  /* bird: safety */
+#define FREAD           0x0001
+#define FWRITE          0x0002
+#endif
+#endif         /* bird: safety */
+#define O_NONBLOCK      0x0004          /* no delay */
+#define O_APPEND        0x0008          /* set append mode */
+#if __BSD_VISIBLE
+#if 0  /* bird: not implemented - start */
+#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 */
+#endif /* bird: not implemented - end */
+#define O_FSYNC         0x0080          /* synchronous writes */
+#endif
+/* bird: EMX used 0x2000 for O_SYNC. */
+#define O_SYNC          0x0080          /* POSIX synonym for O_FSYNC */
+#if 0  /* bird: not implemented - start */
+#if __BSD_VISIBLE
+#define O_NOFOLLOW      0x0100          /* don't follow symlinks */
+#endif
+#endif /* bird: not implemented - end */
+#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
+/* FMARK/FDEFER kept in f_gcflags */
+#define FMARK           0x1             /* mark during gc() */
+#define FDEFER          0x2             /* defer for next gc pass */
+#define FHASLOCK        0x4000          /* descriptor holds advisory lock */
+#endif
+
+/* Defined by POSIX 1003.1; BSD default, but must be distinct from O_RDONLY. */
+/* bird: EMX used 0x4000 for O_NOCTTY. */
+#define O_NOCTTY        0x8000          /* don't assign controlling terminal */
+
+#if 0  /* bird: not implemented - start */
+#if __BSD_VISIBLE
+/* Attempt to bypass buffer cache */
+#define O_DIRECT        0x00010000
+#endif
+#endif /* bird: not implemented - end */
+
+/*
+ * 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)
+/* bits settable by fcntl(F_SETFL, ...) */
+#define FCNTLFLAGS      (FAPPEND|FASYNC|FFSYNC|FNONBLOCK|FPOSIXSHM|O_DIRECT)
+#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 */
+#if 0  /* bird: not implemented - start */
+#define FASYNC          O_ASYNC         /* kernel/compat */
+#endif /* bird: not implemented - end */
+#define FFSYNC          O_FSYNC         /* kernel */
+#define FNONBLOCK       O_NONBLOCK      /* kernel */
+#define FNDELAY         O_NONBLOCK      /* compat */
+#define O_NDELAY        O_NONBLOCK      /* compat */
+#endif
+
+#if 0  /* bird: not implemented - start */
+/*
+ * 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
+
+/*
+ * Set by shm_open(3) to get automatic MAP_ASYNC behavior
+ * for POSIX shared memory objects (which are otherwise
+ * implemented as plain files).
+ */
+#define FPOSIXSHM       O_NOFOLLOW
+#endif
+#endif /* bird: not implemented - end */
+
+/*
+ * Constants used for fcntl(2)
+ */
+
+/* command values */
+/* bird: EMX used 5 for F_DUPFD. */
+#define F_DUPFD         0               /* duplicate file descriptor */
+/* bird: EMX used 3 for F_GETFD. */
+#define F_GETFD         1               /* get file descriptor flags */
+/* bird: EMX used 4 for F_SETFD. */
+#define F_SETFD         2               /* set file descriptor flags */
+/* bird: EMX used 1 for F_GETFL. */
+#define F_GETFL         3               /* get file status flags */
+/* bird: EMX used 2 for F_SETFL. */
+#define F_SETFL         4               /* set file status flags */
+#if 0  /* bird: not implemented - start */
+#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
+#endif /* bird: not implemented - end */
+#define F_GETLK         7               /* get record locking information */
+#define F_SETLK         8               /* set record locking information */
+#define F_SETLKW        9               /* F_SETLK; wait if blocked */
+
+
+/* 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 */
+#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 */
+#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 */
+};
+
+
+#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
+int     flock(int, int);
+#endif
+__END_DECLS
+#endif
+
+/* bird: EMX stuff - start */
+#if !defined (O_TEXT)
+/* Open flags.
+   As stated in the FreeBSD part, there is supposidly a limited number of bits
+   available. We'll try keep in suitable for 16bit just in case (don't care to
+   check what we use right now).
+   When we've disabled a few BSD flags and leave out KERNEL stuff the following
+   bits are available:
+        0x0010, 0x0020, 0x0040, 0x0100, 0x1000, 0x4000*, 0x2000
+*/
+#define O_TEXT          0x0010
 #define O_BINARY        0x0100
-#define O_CREAT         0x0200
-#define O_TRUNC         0x0400
-#define O_EXCL          0x0800
-#define O_SYNC          0x2000
-#define O_NOCTTY        0x4000
-#define O_SIZE          0x8000
-
+#define O_SIZE          0x0020          /* EMX used 0x8000 for O_SIZE. */
 #if !defined (_POSIX_SOURCE)
-#define O_NDELAY        O_NONBLOCK
-#define O_NOINHERIT     0x1000
-#endif
-
-#endif
-
-#if !defined (F_OK)
-#define F_OK 0
-#define X_OK 1
-#define W_OK 2
-#define R_OK 4
-#endif
-
-#if !defined (F_GETFL)
-#define F_GETFL     1
-#define F_SETFL     2
-#define F_GETFD     3
-#define F_SETFD     4
-#define F_DUPFD     5
-#define F_GETOSFD   6           /* RSXNT */
-#endif
-
-#if !defined (FD_CLOEXEC)
-#define FD_CLOEXEC  0x01
-#endif
-
-int creat (__const__ char *, int);
-int fcntl (int, int, ...);
-int open (__const__ char *, int, ...);
-
-#if !defined (_POSIX_SOURCE)
-
-#if !defined (LOCK_SH)
-#define LOCK_SH     0x01
-#define LOCK_EX     0x02
-#define LOCK_NB     0x04
-#define LOCK_UN     0x08
-#endif
-
-int flock (int, int);
-
-#endif
-
+#define O_NOINHERIT     0x1000          /* EMX used 0x1000 for O_NOINHERIT. */
+#endif
+#endif
+
+/* fcntl command */
+/* bird: EMX specifics - start */
+#define F_GETOSFD       20 /* RSXNT */  /* F_GETOSFD used to be 6 */
+/* bird: EMX specifics - end */
+
+
+#if !defined (F_OK) /* bird: Really defined in unistd.h, but Linux and EMX does it here too. */
+/* access function */
+#define F_OK            0       /* test for existence of file */
+#define X_OK            0x01    /* test for execute or search permission */
+#define W_OK            0x02    /* test for write permission */
+#define R_OK            0x04    /* test for read permission */
+#endif
 
 #if !defined (_POSIX_SOURCE) || defined (_WITH_UNDERSCORE)
-
+__BEGIN_DECLS
 int _creat (__const__ char *, int);
 int _fcntl (int, int, ...);
 int _flock (int, int);
 int _open (__const__ char *, int, ...);
-
-#endif
-
-
-#if defined (__cplusplus)
-}
-#endif
-
-#endif /* not _SYS_FCNTL_H */
+__END_DECLS
+#endif
+/* bird: EMX stuff - end */
+
+#endif /* !_SYS_FCNTL_H_ */