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glibc  2.9
fcntl.h
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00001 /* O_*, F_*, FD_* bit values for Linux/HPPA.
00002    Copyright (C) 1995,1996,1997,1998,1999,2000,2002,2004
00003        Free Software Foundation, Inc.
00004    This file is part of the GNU C Library.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #ifndef _FCNTL_H
00022 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
00023 #endif
00024 
00025 #include <sys/types.h>
00026 #ifdef __USE_GNU
00027 # include <bits/uio.h>
00028 #endif
00029 
00030 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
00031    located on an ext2 file system */
00032 #define O_RDONLY     00000000
00033 #define O_WRONLY     00000001
00034 #define O_RDWR              00000002
00035 #define O_ACCMODE    00000003
00036 #define O_APPEND     00000010
00037 #define O_BLKSEEK    00000100 /* HPUX only */
00038 #define O_CREAT             00000400 /* not fcntl */
00039 #define O_TRUNC             00001000 /* not fcntl */
00040 #define O_EXCL              00002000 /* not fcntl */
00041 #define O_ASYNC             00020000
00042 #define O_SYNC              00100000
00043 #define O_NONBLOCK   00200004 /* HPUX has separate NDELAY & NONBLOCK */
00044 #define O_NDELAY     O_NONBLOCK
00045 #define O_NOCTTY     00400000 /* not fcntl */
00046 
00047 
00048 #ifdef __USE_GNU
00049 # define O_DIRECT    000040000 /* Direct disk access.  */
00050 # define O_DIRECTORY 000010000 /* Must be a directory.  */
00051 # define O_NOFOLLOW  000000200 /* Do not follow links.  */
00052 # define O_NOATIME   004000000 /* Do not set atime.  */
00053 # define O_CLOEXEC   010000000 /* Set close_on_exec.  */
00054 #endif
00055 
00056 #ifdef __USE_LARGEFILE64
00057 # define O_LARGEFILE 00004000
00058 #endif
00059 
00060 #if defined __USE_POSIX199309 || defined __USE_UNIX98
00061 # define O_DSYNC            01000000 /* HPUX only */
00062 # define O_RSYNC            02000000 /* HPUX only */
00063 #endif
00064 
00065 /* Values for the second argument to `fcntl'.  */
00066 #define F_DUPFD             0      /* Duplicate file descriptor.  */
00067 #define F_GETFD             1      /* Get file descriptor flags.  */
00068 #define F_SETFD             2      /* Set file descriptor flags.  */
00069 #define F_GETFL             3      /* Get file status flags.  */
00070 #define F_SETFL             4      /* Set file status flags.  */
00071 #ifndef __USE_FILE_OFFSET64
00072 # define F_GETLK     5      /* Get record locking info.  */
00073 # define F_SETLK     6      /* Set record locking info (non-blocking).  */
00074 # define F_SETLKW    7      /* Set record locking info (blocking).  */
00075 #else
00076 # define F_GETLK     F_GETLK64 /* Get record locking info.  */
00077 # define F_SETLK     F_SETLK64 /* Set record locking info (non-blocking). */
00078 # define F_SETLKW    F_SETLKW64 /* Set record locking info (blocking).  */
00079 #endif
00080 #define F_GETLK64    8      /* Get record locking info.  */
00081 #define F_SETLK64    9      /* Set record locking info (non-blocking).  */
00082 #define F_SETLKW64   10     /* Set record locking info (blocking).  */
00083 
00084 #if defined __USE_BSD || defined __USE_UNIX98
00085 # define F_GETOWN    11     /* Get owner of socket (receiver of SIGIO).  */
00086 # define F_SETOWN    12     /* Set owner of socket (receiver of SIGIO).  */
00087 #endif
00088 
00089 #ifdef __USE_GNU
00090 # define F_SETSIG    13     /* Set number of signal to be sent.  */
00091 # define F_GETSIG    14     /* Get number of signal to be sent.  */
00092 #endif
00093 
00094 #ifdef __USE_GNU
00095 # define F_SETLEASE     1024    /* Set a lease.  */
00096 # define F_GETLEASE     1025    /* Enquire what lease is active.  */
00097 # define F_NOTIFY       1026    /* Request notfications on a directory.  */
00098 # define F_DUPFD_CLOEXEC 1030      /* Duplicate file descriptor with
00099                                close-on-exit set.  */
00100 #endif
00101 
00102 /* for F_[GET|SET]FL */
00103 #define FD_CLOEXEC   1      /* actually anything with low bit set goes */
00104 
00105 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
00106 #define F_RDLCK             1      /* Read lock.  */
00107 #define F_WRLCK             2      /* Write lock.  */
00108 #define F_UNLCK             3      /* Remove lock.  */
00109 
00110 /* for old implementation of bsd flock () */
00111 #define F_EXLCK             4      /* or 3 */
00112 #define F_SHLCK             8      /* or 4 */
00113 
00114 #ifdef __USE_BSD
00115 /* operations for bsd flock(), also used by the kernel implementation */
00116 # define LOCK_SH     1      /* shared lock */
00117 # define LOCK_EX     2      /* exclusive lock */
00118 # define LOCK_NB     4      /* or'd with one of the above to prevent
00119                                blocking */
00120 # define LOCK_UN     8      /* remove lock */
00121 #endif
00122 
00123 #ifdef __USE_GNU
00124 /* Types of directory notifications that may be requested with F_NOTIFY.  */
00125 # define DN_ACCESS      0x00000001      /* File accessed.  */
00126 # define DN_MODIFY      0x00000002      /* File modified.  */
00127 # define DN_CREATE      0x00000004      /* File created.  */
00128 # define DN_DELETE      0x00000008      /* File removed.  */
00129 # define DN_RENAME      0x00000010      /* File renamed.  */
00130 # define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
00131 # define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
00132 #endif
00133 
00134 struct flock
00135   {
00136     short int l_type;       /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
00137     short int l_whence;     /* Where `l_start' is relative to (like `lseek').  */
00138 #ifndef __USE_FILE_OFFSET64
00139     __off_t l_start; /* Offset where the lock begins.  */
00140     __off_t l_len;   /* Size of the locked area; zero means until EOF.  */
00141 #else
00142     __off64_t l_start;      /* Offset where the lock begins.  */
00143     __off64_t l_len; /* Size of the locked area; zero means until EOF.  */
00144 #endif
00145     __pid_t l_pid;   /* Process holding the lock.  */
00146   };
00147 
00148 #ifdef __USE_LARGEFILE64
00149 struct flock64
00150   {
00151     short int l_type;       /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
00152     short int l_whence;     /* Where `l_start' is relative to (like `lseek').  */
00153     __off64_t l_start;      /* Offset where the lock begins.  */
00154     __off64_t l_len; /* Size of the locked area; zero means until EOF.  */
00155     __pid_t l_pid;   /* Process holding the lock.  */
00156   };
00157 #endif
00158 
00159 /* Define some more compatibility macros to be backward compatible with
00160    BSD systems which did not managed to hide these kernel macros.  */
00161 #ifdef __USE_BSD
00162 # define FAPPEND     O_APPEND
00163 # define FFSYNC             O_FSYNC
00164 # define FASYNC             O_ASYNC
00165 # define FNONBLOCK   O_NONBLOCK
00166 # define FNDELAY     O_NDELAY
00167 #endif /* Use BSD.  */
00168 
00169 /* Advise to `posix_fadvise'.  */
00170 #ifdef __USE_XOPEN2K
00171 # define POSIX_FADV_NORMAL  0 /* No further special treatment.  */
00172 # define POSIX_FADV_RANDOM  1 /* Expect random page references.  */
00173 # define POSIX_FADV_SEQUENTIAL     2 /* Expect sequential page references.  */
00174 # define POSIX_FADV_WILLNEED       3 /* Will need these pages.  */
00175 # define POSIX_FADV_DONTNEED       4 /* Don't need these pages.  */
00176 # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once.  */
00177 #endif
00178 
00179 #ifdef __USE_GNU
00180 # define SYNC_FILE_RANGE_WAIT_BEFORE      1 /* Wait upon writeout of all pages
00181                                         in the range before performing the
00182                                         write.  */
00183 # define SYNC_FILE_RANGE_WRITE            2 /* Initiate writeout of all those
00184                                         dirty pages in the range which are
00185                                         not presently under writeback.  */
00186 # define SYNC_FILE_RANGE_WAIT_AFTER       4 /* Wait upon writeout of all pages in
00187                                         the range after performing the
00188                                         write.  */
00189 
00190 /* Flags for SPLICE and VMSPLICE.  */
00191 # define SPLICE_F_MOVE             1      /* Move pages instead of copying.  */
00192 # define SPLICE_F_NONBLOCK  2      /* Don't block on the pipe splicing
00193                                       (but we may still block on the fd
00194                                       we splice from/to).  */
00195 # define SPLICE_F_MORE             4      /* Expect more data.  */
00196 # define SPLICE_F_GIFT             8      /* Pages passed in are a gift.  */
00197 #endif
00198 
00199 __BEGIN_DECLS
00200 
00201 #ifdef __USE_GNU
00202 
00203 /* Provide kernel hint to read ahead.  */
00204 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
00205     __THROW;
00206 
00207 /* Selective file content synch'ing.  */
00208 extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
00209                          unsigned int __flags);
00210 
00211 /* Splice address range into a pipe.  */
00212 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov, 
00213                       size_t __count, unsigned int __flags);
00214 
00215 /* Splice two files together.  */
00216 extern ssize_t splice (int __fdin, __off64_t *offin, int __fdout, 
00217                      __off64_t *__offout, size_t __len,
00218                      unsigned int __flags);
00219 
00220 /* In-kernel implementation of tee for pipe buffers.  */
00221 extern ssize_t tee (int __fdin, int __fdout, size_t __len,
00222                   unsigned int __flags);
00223     
00224 #endif
00225     
00226 __END_DECLS