diff options
Diffstat (limited to 'posix/unistd.h')
| -rw-r--r-- | posix/unistd.h | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/posix/unistd.h b/posix/unistd.h index 0fc3d7bb92..6818699104 100644 --- a/posix/unistd.h +++ b/posix/unistd.h @@ -61,9 +61,23 @@ __BEGIN_DECLS always available. If not, they may be available sometimes. The current values can be obtained with `sysconf'. - _POSIX_JOB_CONTROL Job control is supported. - _POSIX_SAVED_IDS Processes have a saved set-user-ID - and a saved set-group-ID. + _POSIX_JOB_CONTROL Job control is supported. + _POSIX_SAVED_IDS Processes have a saved set-user-ID + and a saved set-group-ID. + _POSIX_REALTIME_SIGNALS Real-time, queued signals are supported. + _POSIX_PRIORITY_SCHEDULING Priority scheduling is supported. + _POSIX_TIMERS POSIX.4 clocks and timers are supported. + _POSIX_ASYNCHRONOUS_IO Asynchronous I/O is supported. + _POSIX_PRIORITIZED_IO Prioritized asynchronous I/O is supported. + _POSIX_SYNCHRONIZED_IO Synchronizing file data is supported. + _POSIX_FSYNC The fsync function is present. + _POSIX_MAPPED_FILES Mapping of files to memory is supported. + _POSIX_MEMLOCK Locking of all memory is supported. + _POSIX_MEMLOCK_RANGE Locking of ranges of memory is supported. + _POSIX_MEMORY_PROTECTION Setting of memory protections is supported. + _POSIX_MESSAGE_PASSING POSIX.4 message queues are supported. + _POSIX_SEMAPHORES POSIX.4 counting semaphores are supported. + _POSIX_SHARED_MEMORY_OBJECTS POSIX.4 shared memory objects are supported. If any of these symbols is defined as -1, the corresponding option is not true for any file. If any is defined as other than -1, the corresponding @@ -732,6 +746,12 @@ extern int lockf __P ((int __fd, int __cmd, __off_t __len)); #endif +#ifdef __USE_POSIX +/* Synchronize at least the data part of a file with the underlying + media. */ +extern int fdatasync __P ((int __fildes)); +#endif /* Use POSIX */ + __END_DECLS #endif /* unistd.h */ |