1 /* 2 * Copyright (c) 1998,2001 by Sun Microsystems, Inc. 3 * All rights reserved. 4 */ 5 6 /* 7 * Copyright (c) 1983 Regents of the University of California. 8 * All rights reserved. The Berkeley software License Agreement 9 * specifies the terms and conditions for redistribution. 10 */ 11 12 #ifndef __SYS_FCNTLCOM_H 13 #define __SYS_FCNTLCOM_H 14 15 #pragma ident "%Z%%M% %I% %E% SMI" 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 /* 22 * Rewack the FXXXXX values as _FXXXX so that _POSIX_SOURCE works. 23 */ 24 #define _FOPEN (-1) /* from sys/file.h, kernel use only */ 25 #define _FREAD 0x0001 /* read enabled */ 26 #define _FWRITE 0x0002 /* write enabled */ 27 #define _FNDELAY 0x0004 /* non blocking I/O (4.2 style) */ 28 #define _FAPPEND 0x0008 /* append (writes guaranteed at the end) */ 29 #define _FMARK 0x0010 /* internal; mark during gc() */ 30 #define _FDEFER 0x0020 /* internal; defer for next gc pass */ 31 #define _FASYNC 0x0040 /* signal pgrp when data ready */ 32 #define _FSHLOCK 0x0080 /* BSD flock() shared lock present */ 33 #define _FEXLOCK 0x0100 /* BSD flock() exclusive lock present */ 34 #define _FCREAT 0x0200 /* open with file create */ 35 #define _FTRUNC 0x0400 /* open with truncation */ 36 #define _FEXCL 0x0800 /* error on open if file exists */ 37 #define _FNBIO 0x1000 /* non blocking I/O (sys5 style) */ 38 #define _FSYNC 0x2000 /* do all writes synchronously */ 39 #define _FNONBLOCK 0x4000 /* non blocking I/O (POSIX style) */ 40 #define _FNOCTTY 0x8000 /* don't assign a ctty on this open */ 41 42 #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR) 43 44 /* 45 * Flag values for open(2) and fcntl(2) 46 * The kernel adds 1 to the open modes to turn it into some 47 * combination of FREAD and FWRITE. 48 */ 49 #define O_RDONLY 0 /* +1 == FREAD */ 50 #define O_WRONLY 1 /* +1 == FWRITE */ 51 #define O_RDWR 2 /* +1 == FREAD|FWRITE */ 52 #define O_APPEND _FAPPEND 53 #define O_CREAT _FCREAT 54 #define O_TRUNC _FTRUNC 55 #define O_EXCL _FEXCL 56 /* O_SYNC _FSYNC not posix, defined below */ 57 /* O_NDELAY _FNDELAY set in include/fcntl.h */ 58 /* O_NDELAY _FNBIO set in 5include/fcntl.h */ 59 #define O_NONBLOCK _FNONBLOCK 60 #define O_NOCTTY _FNOCTTY 61 62 #ifndef _POSIX_SOURCE 63 64 #define O_SYNC _FSYNC 65 66 /* 67 * Flags that work for fcntl(fd, F_SETFL, FXXXX) 68 */ 69 #define FAPPEND _FAPPEND 70 #define FSYNC _FSYNC 71 #define FASYNC _FASYNC 72 #define FNBIO _FNBIO 73 #define FNONBIO _FNONBLOCK /* XXX fix to be NONBLOCK everywhere */ 74 #define FNDELAY _FNDELAY 75 76 /* 77 * Flags that are disallowed for fcntl's (FCNTLCANT); 78 * used for opens, internal state, or locking. 79 */ 80 #define FREAD _FREAD 81 #define FWRITE _FWRITE 82 #define FMARK _FMARK 83 #define FDEFER _FDEFER 84 #define FSHLOCK _FSHLOCK 85 #define FEXLOCK _FEXLOCK 86 87 /* 88 * The rest of the flags, used only for opens 89 */ 90 #define FOPEN _FOPEN 91 #define FCREAT _FCREAT 92 #define FTRUNC _FTRUNC 93 #define FEXCL _FEXCL 94 #define FNOCTTY _FNOCTTY 95 96 #endif /* !_POSIX_SOURCE */ 97 98 /* XXX close on exec request; must match UF_EXCLOSE in user.h */ 99 #define FD_CLOEXEC 1 /* posix */ 100 101 /* fcntl(2) requests */ 102 #define F_DUPFD 0 /* Duplicate fildes */ 103 #define F_GETFD 1 /* Get fildes flags (close on exec) */ 104 #define F_SETFD 2 /* Set fildes flags (close on exec) */ 105 #define F_GETFL 3 /* Get file flags */ 106 #define F_SETFL 4 /* Set file flags */ 107 #ifndef _POSIX_SOURCE 108 #define F_GETOWN 5 /* Get owner - for ASYNC */ 109 #define F_SETOWN 6 /* Set owner - for ASYNC */ 110 #endif /* !_POSIX_SOURCE */ 111 #define F_GETLK 7 /* Get record-locking information */ 112 #define F_SETLK 8 /* Set or Clear a record-lock (Non-Blocking) */ 113 #define F_SETLKW 9 /* Set or Clear a record-lock (Blocking) */ 114 #ifndef _POSIX_SOURCE 115 #define F_CNVT 12 /* Convert a fhandle to an open fd */ 116 #endif /* !_POSIX_SOURCE */ 117 118 /* fcntl(2) flags (l_type field of flock structure) */ 119 #define F_RDLCK 1 /* read lock */ 120 #define F_WRLCK 2 /* write lock */ 121 #define F_UNLCK 3 /* remove lock(s) */ 122 #ifndef _POSIX_SOURCE 123 #define F_UNLKSYS 4 /* remove remote locks for a given system */ 124 #endif /* !_POSIX_SOURCE */ 125 126 #include <sys/stdtypes.h> 127 128 /* file segment locking set data type - information passed to system by user */ 129 struct flock { 130 short l_type; /* F_RDLCK, F_WRLCK, or F_UNLCK */ 131 short l_whence; /* flag to choose starting offset */ 132 long l_start; /* relative offset, in bytes */ 133 long l_len; /* length, in bytes; 0 means lock to EOF */ 134 short l_pid; /* returned with F_GETLK */ 135 short l_xxx; /* reserved for future use */ 136 }; 137 138 #ifndef _POSIX_SOURCE 139 /* extended file segment locking set data type */ 140 struct eflock { 141 short l_type; /* F_RDLCK, F_WRLCK, or F_UNLCK */ 142 short l_whence; /* flag to choose starting offset */ 143 long l_start; /* relative offset, in bytes */ 144 long l_len; /* length, in bytes; 0 means lock to EOF */ 145 short l_pid; /* returned with F_GETLK */ 146 short l_xxx; /* reserved for future use */ 147 long l_rpid; /* Remote process id wanting this lock */ 148 long l_rsys; /* Remote system id wanting this lock */ 149 }; 150 #endif /* !_POSIX_SOURCE */ 151 152 #ifndef KERNEL 153 #include <sys/stat.h> /* sigh. for the mode bits for open/creat */ 154 155 int open(/* char *path, int flags, mode_t modes */); 156 int creat(/* char *path, mode_t modes */); 157 int fcntl(/* int fd, cmd, ... */); 158 #endif /* !KERNEL */ 159 160 #ifdef __cplusplus 161 } 162 #endif 163 164 #endif /* __SYS_FCNTLCOM_H */ 165