1: /* O_*, F_*, FD_* bit values for stub configuration.
    2:    Copyright (C) 1991, 1992, 1997, 2000, 2004 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4: 
    5:    The GNU C Library is free software; you can redistribute it and/or
    6:    modify it under the terms of the GNU Lesser General Public
    7:    License as published by the Free Software Foundation; either
    8:    version 2.1 of the License, or (at your option) any later version.
    9: 
   10:    The GNU C Library is distributed in the hope that it will be useful,
   11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13:    Lesser General Public License for more details.
   14: 
   15:    You should have received a copy of the GNU Lesser General Public
   16:    License along with the GNU C Library; if not, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: /* These values should be changed as appropriate for your system.  */
   21: 
   22: #ifndef _FCNTL_H
   23: # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
   24: #endif
   25: 
   26: 
   27: /* File access modes for `open' and `fcntl'.  */
   28: #define O_RDONLY        0      /* Open read-only.  */
   29: #define O_WRONLY        1      /* Open write-only.  */
   30: #define O_RDWR          2       /* Open read/write.  */
   31: 
   32: 
   33: /* Bits OR'd into the second argument to open.  */
   34: #define O_CREAT         0x0200 /* Create file if it doesn't exist.  */
   35: #define O_EXCL          0x0800  /* Fail if file already exists.  */
   36: #define O_TRUNC         0x0400 /* Truncate file to zero length.  */
   37: #define O_NOCTTY        0x0100 /* Don't assign a controlling terminal.  */
   38: 
   39: /* File status flags for `open' and `fcntl'.  */
   40: #define O_APPEND        0x0008 /* Writes append to the file.  */
   41: #define O_NONBLOCK      0x0004       /* Non-blocking I/O.  */
   42: 
   43: #ifdef __USE_BSD
   44: # define O_NDELAY       O_NONBLOCK
   45: #endif
   46: 
   47: /* Mask for file access modes.  This is system-dependent in case
   48:    some system ever wants to define some other flavor of access.  */
   49: #define O_ACCMODE       (O_RDONLY|O_WRONLY|O_RDWR)
   50: 
   51: /* Values for the second argument to `fcntl'.  */
   52: #define F_DUPFD         0    /* Duplicate file descriptor.  */
   53: #define F_GETFD         1      /* Get file descriptor flags.  */
   54: #define F_SETFD         2      /* Set file descriptor flags.  */
   55: #define F_GETFL         3      /* Get file status flags.  */
   56: #define F_SETFL         4      /* Set file status flags.  */
   57: #if defined __USE_BSD || defined __USE_UNIX98
   58: # define F_GETOWN       5     /* Get owner (receiver of SIGIO).  */
   59: # define F_SETOWN       6     /* Set owner (receiver of SIGIO).  */
   60: #endif
   61: #define F_GETLK         7      /* Get record locking info.  */
   62: #define F_SETLK         8      /* Set record locking info.  */
   63: #define F_SETLKW        9      /* Set record locking info, wait.  */
   64: 
   65: /* File descriptor flags used with F_GETFD and F_SETFD.  */
   66: #define FD_CLOEXEC      1    /* Close on exec.  */
   67: 
   68: 
   69: #include <bits/types.h>
   70: 
   71: /* The structure describing an advisory lock.  This is the type of the third
   72:    argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests.  */
   73: struct flock
   74:   {
   75:     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
   76:     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
   77:     __off_t l_start;    /* Offset where the lock begins.  */
   78:     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
   79:     __pid_t l_pid;      /* Process holding the lock.  */
   80:   };
   81: 
   82: /* Values for the `l_type' field of a `struct flock'.  */
   83: #define F_RDLCK 1       /* Read lock.  */
   84: #define F_WRLCK 2       /* Write lock.  */
   85: #define F_UNLCK 3       /* Remove lock.  */
   86: 
   87: /* Advise to `posix_fadvise'.  */
   88: #ifdef __USE_XOPEN2K
   89: # define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
   90: # define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
   91: # define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
   92: # define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
   93: # define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
   94: # define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
   95: #endif