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Rev | Author | Line No. | Line |
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2 | pj | 1 | /* O_*, F_*, FD_* bit values for Linux. |
2 | Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. |
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3 | This file is part of the GNU C Library. |
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4 | |||
5 | The GNU C Library is free software; you can redistribute it and/or |
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6 | modify it under the terms of the GNU Library General Public License as |
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7 | published by the Free Software Foundation; either version 2 of the |
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8 | License, or (at your option) any later version. |
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9 | |||
10 | The GNU C Library is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | Library General Public License for more details. |
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14 | |||
15 | You should have received a copy of the GNU Library General Public |
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16 | License along with the GNU C Library; see the file COPYING.LIB. If not, |
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17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 | Boston, MA 02111-1307, USA. */ |
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19 | |||
20 | #ifndef _FCNTL_H |
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21 | # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." |
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22 | #endif |
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23 | |||
24 | |||
25 | #include <sys/types.h> |
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26 | |||
27 | /* open/fcntl - O_SYNC is only implemented on blocks devices and on files |
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28 | located on an ext2 file system */ |
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29 | #define O_ACCMODE 0003 |
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30 | #define O_RDONLY 00 |
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31 | #define O_WRONLY 01 |
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32 | #define O_RDWR 02 |
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33 | #define O_CREAT 0100 /* not fcntl */ |
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34 | #define O_EXCL 0200 /* not fcntl */ |
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35 | #define O_NOCTTY 0400 /* not fcntl */ |
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36 | #define O_TRUNC 01000 /* not fcntl */ |
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37 | #define O_APPEND 02000 |
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38 | #define O_NONBLOCK 04000 |
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39 | #define O_NDELAY O_NONBLOCK |
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40 | #define O_SYNC 010000 |
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41 | #define O_FSYNC O_SYNC |
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42 | #define O_ASYNC 020000 |
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43 | |||
44 | #ifdef __USE_GNU |
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45 | # define O_DIRECTORY 040000 /* Must be a directory. */ |
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46 | # define O_NOFOLLOW 0100000 /* Do not follow links. */ |
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47 | #endif |
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48 | |||
49 | /* XXX missing */ |
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50 | #ifdef __USE_LARGEFILE64 |
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51 | # define O_LARGEFILE 0 |
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52 | #endif |
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53 | |||
54 | /* For now Linux has synchronisity options for data and read operations. |
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55 | We define the symbols here but let them do the same as O_SYNC since |
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56 | this is a superset. */ |
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57 | #if defined __USE_POSIX199309 || defined __USE_UNIX98 |
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58 | # define O_DSYNC O_SYNC /* Synchronize data. */ |
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59 | # define O_RSYNC O_SYNC /* Synchronize read operations. */ |
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60 | #endif |
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61 | |||
62 | /* Values for the second argument to `fcntl'. */ |
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63 | #define F_DUPFD 0 /* Duplicate file descriptor. */ |
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64 | #define F_GETFD 1 /* Get file descriptor flags. */ |
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65 | #define F_SETFD 2 /* Set file descriptor flags. */ |
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66 | #define F_GETFL 3 /* Get file status flags. */ |
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67 | #define F_SETFL 4 /* Set file status flags. */ |
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68 | #define F_GETLK 5 /* Get record locking info. */ |
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69 | #define F_SETLK 6 /* Set record locking info (non-blocking). */ |
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70 | #define F_SETLKW 7 /* Set record locking info (blocking). */ |
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71 | |||
72 | /* XXX missing */ |
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73 | #define F_GETLK64 5 /* Get record locking info. */ |
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74 | #define F_SETLK64 6 /* Set record locking info (non-blocking). */ |
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75 | #define F_SETLKW64 7 /* Set record locking info (blocking). */ |
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76 | |||
77 | #ifdef __USE_BSD |
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78 | # define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ |
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79 | # define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ |
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80 | #endif |
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81 | |||
82 | #ifdef __USE_GNU |
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83 | # define F_SETSIG 10 /* Set number of signal to be sent. */ |
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84 | # define F_GETSIG 11 /* Get number of signal to be sent. */ |
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85 | #endif |
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86 | |||
87 | /* For F_[GET|SET]FL. */ |
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88 | #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ |
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89 | |||
90 | /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ |
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91 | #define F_RDLCK 0 /* Read lock. */ |
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92 | #define F_WRLCK 1 /* Write lock. */ |
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93 | #define F_UNLCK 2 /* Remove lock. */ |
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94 | |||
95 | /* for old implementation of bsd flock () */ |
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96 | #define F_EXLCK 4 /* or 3 */ |
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97 | #define F_SHLCK 8 /* or 4 */ |
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98 | |||
99 | #ifdef __USE_BSD |
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100 | /* Operations for bsd flock(), also used by the kernel implementation */ |
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101 | # define LOCK_SH 1 /* shared lock */ |
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102 | # define LOCK_EX 2 /* exclusive lock */ |
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103 | # define LOCK_NB 4 /* or'd with one of the above to prevent |
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104 | blocking */ |
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105 | # define LOCK_UN 8 /* remove lock */ |
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106 | #endif |
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107 | |||
108 | struct flock |
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109 | { |
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110 | short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ |
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111 | short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ |
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112 | #ifndef __USE_FILE_OFFSET64 |
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113 | __off_t l_start; /* Offset where the lock begins. */ |
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114 | __off_t l_len; /* Size of the locked area; zero means until EOF. */ |
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115 | #else |
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116 | __off64_t l_start; /* Offset where the lock begins. */ |
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117 | __off64_t l_len; /* Size of the locked area; zero means until EOF. */ |
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118 | #endif |
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119 | __pid_t l_pid; /* Process holding the lock. */ |
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120 | }; |
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121 | |||
122 | #ifdef __USE_LARGEFILE64 |
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123 | struct flock64 |
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124 | { |
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125 | short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ |
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126 | short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ |
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127 | __off64_t l_start; /* Offset where the lock begins. */ |
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128 | __off64_t l_len; /* Size of the locked area; zero means until EOF. */ |
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129 | __pid_t l_pid; /* Process holding the lock. */ |
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130 | }; |
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131 | #endif |
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132 | |||
133 | /* Define some more compatibility macros to be backward compatible with |
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134 | BSD systems which did not managed to hide these kernel macros. */ |
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135 | #ifdef __USE_BSD |
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136 | # define FAPPEND O_APPEND |
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137 | # define FFSYNC O_FSYNC |
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138 | # define FASYNC O_ASYNC |
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139 | # define FNONBLOCK O_NONBLOCK |
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140 | # define FNDELAY O_NDELAY |
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141 | #endif /* Use BSD. */ |