QNX Neutrino doesn't implement the following optional features:
- _POSIX_TRACE
- _POSIX_TRACE_EVENT_LOG
- _POSIX_TRACE_LOG
- POSIX 1003.26-2003
- POSIX.5c Interfaces (Ada Language Option)
QNX Neutrino supports the following POSIX.1 options and POSIX.13 units of
functionality not mandated by the
PSE52 Realtime Controller 1003.13-2003 System Product Standard:
- _POSIX_ASYNCHRONOUS_IO
- _POSIX_BARRIERS
- _POSIX_CHOWN_RESTRICTED
- _POSIX_IPV6
- _POSIX_MEMORY_PROTECTION
- _POSIX_PRIORITIZED_IO
- _POSIX_RAW_SOCKETS
- _POSIX_SAVED_IDS
- _POSIX_SPORADIC_SERVER
- _POSIX_THREAD_PROCESS_SHARED
- _POSIX_TYPED_MEMORY_OBJECTS
- POSIX_C_LANG_WIDE_CHAR
- POSIX_DEVICE_SPECIFIC
- POSIX_EVENT_MGMT
- POSIX_FIFO
- POSIX_FILE_ATTRIBUTES
- POSIX_FILE_SYSTEM_EXT
- POSIX_JOB_CONTROL
- POSIX_MULTI_PROCESS
- POSIX_NETWORKING
- POSIX_PIPE
- POSIX_REGEXP
- POSIX_RW_LOCKS
- POSIX_SHELL_FUNC
- POSIX_SIGNAL_JUMP
- POSIX_STRING_MATCHING
- POSIX_SYMBOLIC_LINKS
- POSIX_SYSTEM_DATABASE
- POSIX_USER_GROUPS
- POSIX_WIDE_CHAR_IO
- XSI_C_LANG_SUPPORT
- XSI_DEVICE_IO
- XSI_DYNAMIC_LINKING
- XSI_FD_MGMT
- XSI_FILE_SYSTEM
- XSI_JOB_CONTROL
- XSI_JUMP
- XSI_MULTI_PROCESS
- XSI_SINGLE_PROCESS
- XSI_SYSTEM_DATABASE
- XSI_SYSTEM_LOGGING
- XSI_TIMERS