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36 * @(#)fcntl.h 8.3 (Berkeley) 1/21/94
37 * $FreeBSD: src/sys/sys/fcntl.h,v 1.16 2004/04/07 04:19:49 imp Exp $
44 * This file includes the definitions for open and fcntl
45 * described by POSIX for <fcntl.h>; it also includes
46 * related kernel definitions.
49 #include <sys/cdefs.h>
50 #include <sys/_types.h>
52 #ifndef _MODE_T_DECLARED
53 typedef __mode_t mode_t;
54 #define _MODE_T_DECLARED
57 #ifndef _OFF_T_DECLARED
58 typedef __off_t off_t;
60 #if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
61 typedef __off_t off64_t;
62 #endif /* SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS */
64 #define _OFF_T_DECLARED
67 #ifndef _PID_T_DECLARED
68 typedef __pid_t pid_t;
69 #define _PID_T_DECLARED
73 * File status flags: these are used by open(2), fcntl(2).
74 * They are also used (indirectly) in the kernel file structure f_flags,
75 * which is a superset of the open/fcntl flags. Open flags and f_flags
76 * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags).
77 * Open/fcntl flags begin with O_; kernel-internal flags begin with F.
80 #define O_RDONLY 0x0000 /* open for reading only */
81 #define O_WRONLY 0x0001 /* open for writing only */
82 #define O_RDWR 0x0002 /* open for reading and writing */
83 #define O_ACCMODE 0x0003 /* mask for above modes */
85 #if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
86 #define O_LARGEFILE 0x0004
87 #endif /* SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS */
90 * Kernel encoding of open mode; separate read and write bits that are
91 * independently testable: 1 greater than the above.
94 * FREAD and FWRITE are excluded from the #ifdef _KERNEL so that TIOCFLUSH,
95 * which was documented to use FREAD/FWRITE, continues to work.
101 #define O_NONBLOCK 0x0004 /* no delay */
102 #define O_APPEND 0x0008 /* set append mode */
104 #define O_SHLOCK 0x0010 /* open with shared file lock */
105 #define O_EXLOCK 0x0020 /* open with exclusive file lock */
106 #define O_ASYNC 0x0040 /* signal pgrp when data ready */
107 #define O_FSYNC 0x0080 /* synchronous writes */
109 #define O_SYNC 0x0080 /* POSIX synonym for O_FSYNC */
111 #define O_NOFOLLOW 0x0100 /* don't follow symlinks */
113 #define O_CREAT 0x0200 /* create if nonexistent */
114 #define O_TRUNC 0x0400 /* truncate to zero length */
115 #define O_EXCL 0x0800 /* error if already exists */
117 #define FHASLOCK 0x4000 /* descriptor holds advisory lock */
120 /* Defined by POSIX 1003.1; BSD default, but must be distinct from O_RDONLY. */
121 #define O_NOCTTY 0x8000 /* don't assign controlling terminal */
124 /* Attempt to bypass buffer cache */
125 #define O_DIRECT 0x00010000
128 //Copied from MRT1.0 fcntl.h header
129 #define _FBUFFERED 0x10000 /* buffer at the interface to the file system */
130 #define _FBINARY 0x10000
131 #define _FTEXT 0x20000
132 #define O_BINARY _FBINARY
133 #define O_TEXT _FTEXT
134 #define O_BUFFERED _FBUFFERED
137 * XXX missing O_DSYNC, O_RSYNC.
141 /* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */
142 #define FFLAGS(oflags) ((oflags) + 1)
143 #define OFLAGS(fflags) ((fflags) - 1)
145 /* bits to save after open */
146 #define FMASK (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FNONBLOCK|O_DIRECT)
147 /* bits settable by fcntl(F_SETFL, ...) */
148 #define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FNONBLOCK|FPOSIXSHM|O_DIRECT)
152 * The O_* flags used to have only F* names, which were used in the kernel
153 * and by fcntl. We retain the F* names for the kernel f_flag field
154 * and for backward compatibility for fcntl. These flags are deprecated.
157 #define FAPPEND O_APPEND /* kernel/compat */
158 #define FASYNC O_ASYNC /* kernel/compat */
159 #define FFSYNC O_FSYNC /* kernel */
160 #define FNONBLOCK O_NONBLOCK /* kernel */
161 #define FNDELAY O_NONBLOCK /* compat */
162 #define O_NDELAY O_NONBLOCK /* compat */
166 * We are out of bits in f_flag (which is a short). However,
167 * the flag bits not set in FMASK are only meaningful in the
168 * initial open syscall. Those bits can thus be given a
169 * different meaning for fcntl(2).
174 * Set by shm_open(3) to get automatic MAP_ASYNC behavior
175 * for POSIX shared memory objects (which are otherwise
176 * implemented as plain files).
178 #define FPOSIXSHM O_NOFOLLOW
181 /*SYMBIAN Flag for tmpfile removal*/
183 #define O_TMPFILE 0x10000000 /* flag for cleanup of tmpfiles*/
184 #endif //__SYMBIAN32__
185 /*SYMBIAN Flag for shm_open()*/
187 #define O_SHMFLG 0x01000000 /* flag for shm_open()*/
188 #endif //__SYMBIAN32__
190 * Constants used for fcntl(2)
194 #define F_DUPFD 0 /* duplicate file descriptor */
195 #define F_GETFD 1 /* get file descriptor flags */
196 #define F_SETFD 2 /* set file descriptor flags */
197 #define F_GETFL 3 /* get file status flags */
198 #define F_SETFL 4 /* set file status flags */
199 #if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
200 #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */
201 #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */
203 #define F_GETLK 7 /* get record locking information */
204 #define F_SETLK 8 /* set record locking information */
205 #define F_SETLKW 9 /* F_SETLK; wait if blocked */
207 #if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
208 #define F_GETLK64 F_GETLK
209 #define F_SETLK64 F_SETLK
210 #define F_SETLKW64 F_SETLKW
211 #endif /* SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS */
213 /* file descriptor flags (F_GETFD, F_SETFD) */
214 #define FD_CLOEXEC 1 /* close-on-exec flag */
216 /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
217 #define F_RDLCK 1 /* shared or read lock */
218 #define F_UNLCK 2 /* unlock */
219 #define F_WRLCK 3 /* exclusive or write lock */
221 #define F_WAIT 0x010 /* Wait until lock is granted */
222 #define F_FLOCK 0x020 /* Use flock(2) semantics for lock */
223 #define F_POSIX 0x040 /* Use POSIX semantics for lock */
227 * Advisory file segment locking data type -
228 * information passed to system by user
231 off_t l_start; /* starting offset */
232 off_t l_len; /* len = 0 means until end of file */
233 pid_t l_pid; /* lock owner */
234 short l_type; /* lock type: read/write, etc. */
235 short l_whence; /* type of l_start */
238 #if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
239 #define flock64 flock
240 #endif /* SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS */
244 /* lock operations for flock(2) */
245 #define LOCK_SH 0x01 /* shared file lock */
246 #define LOCK_EX 0x02 /* exclusive file lock */
247 #define LOCK_NB 0x04 /* don't block when locking */
248 #define LOCK_UN 0x08 /* unlock file */
252 * XXX missing posix_fadvise() and posix_fallocate(), and POSIX_FADV_* macros.
257 IMPORT_C int open(const char *, int, ...);
258 IMPORT_C int creat(const char *, mode_t);
259 IMPORT_C int fcntl(int, int, ...);
261 #if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
263 #define creat64 creat
264 #endif /* SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS */
272 #endif /* !_SYS_FCNTL_H_ */