| Name | Data Type | Qualifiers |
| Name | Data Type | Value | Scope | Flavors |
| AioListioMax | uint64 |
| Description | string | Maximum number of I/O operations in a single list I/O call supported by the implementation. Minimum Acceptable Value: _POSIX_AIO_LISTIO_MAX(2) sysconf returns this variable when _SC_AIO_LISTIO_MAX is passed to it. | None | TRANSLATABLE= true |
| AioMax | uint64 |
| Description | string | Maximum number of outstanding asynchronous I/O operations supported by the implementation. Minimum Acceptable Value: _POSIX_AIO_MAX(1) sysconf returns this variable when _SC_AIO_MAX is passed to it. | None | TRANSLATABLE= true |
| AioPrioDeltaMax | uint64 |
| Description | string | Maximum amount by which a process can decrease its asynchronous I/O priority level from its own scheduling priority. sysconf returns this variable when _SC_AIO_PRIO_DELTA_MAX is passed to it. | None | TRANSLATABLE= true |
| MaxCanon | uint64 |
| Description | string | Maximum number of bytes in a terminal canonical input queue. Minimum Acceptable Value: _POSIX_MAX_CANON(255). pathconf returns this variable when _PC_MAX_CANON is passed to it. | None | TRANSLATABLE= true |
| MaxInput | uint64 |
| Description | string | Minimum number of bytes for which space will be available in a terminal input queue; therefore, the maximum number of bytes a portable application may require to be typed as input before reading them. Minimum Acceptable Value: _POSIX_MAX_INPUT(255). pathconf returns this variable when _PC_MAX_INPUT is passed to it. | None | TRANSLATABLE= true |
| PipeBuf | uint64 |
| Description | string | Maximum number of bytes that is guaranteed to be atomic when writing to a pipe. Minimum Acceptable Value: _POSIX_PIPE_BUF(512) pathconf returns this variable when _PC_PIPE_BUF is passed to it. | None | TRANSLATABLE= true |
| PosixVdisable | uint64 |
| Description | string | Terminal special characters defined in <termios.h> can be disabled using this character value. Defined if a value other than -1 is returned. pathconf returns this variable when _PC_VDISABLE is passed to it. | None | TRANSLATABLE= true |