| cbool | Boolean type | 
| cchar | C type: 8-bit signed integer | 
| cdouble | Double precision real format. | 
| cfloat | Floating-point real format | 
| cint | C type: integer (natural size) | 
| cint16 | C type: 16 bits sized, signed integer. | 
| cint32 | C type: 32 bits sized, signed integer. | 
| cint64 | C type: 64 bits sized, signed integer. | 
| cint8 | C type: 8 bits sized, signed integer. | 
| clock_t | Clock ticks type | 
| clong | C type: long signed integer (double sized) | 
| clongdouble | Long double | 
| clonglong | C type: 64-bit (double long) signed integer. | 
| cschar | Signed character type | 
| cshort | C type: short signed integer (half sized) | 
| csigned | Signed integer | 
| csint | Signed integer | 
| cslong | Signed long | 
| cslonglong | Signed longlong type | 
| csshort | Short signed integer type | 
| cuchar | C type: 8-bit unsigned integer | 
| cuint | C type: unsigned integer (natural size) | 
| cuint16 | C type: 16 bits sized, unsigned integer. | 
| cuint32 | C type: 32 bits sized, unsigned integer. | 
| cuint64 | C type: 64 bits sized, unsigned integer. | 
| cuint8 | C type: 8 bits sized, unsigned integer. | 
| culong | C type: long unsigned integer (double sized) | 
| culonglong | C type: 64-bit (double long) unsigned integer. | 
| cunsigned | Alias for #rtl.unixtype.cuint | 
| cushort | C type: short unsigned integer (half sized) | 
| dev_t | Device descriptor type. | 
| gid_t | Group ID type. | 
| ino64_t | 64-bit inode | 
| ino_t | Inode type. | 
| ipc_pid_t | Process ID | 
| kDev_t | Kernel device type | 
| mbstate_t | Opaque type for multi-byte character routines | 
| mbstate_value_t | Opaque type for multi-byte character routines | 
| mode_t | Inode mode type. | 
| nlink_t | Number of links type. | 
| off64_t | 64-bit offset type. | 
| off_t | Offset type. | 
| pcbool | Pointer to boolean type | 
| pcchar | Pointer to #rtl.UnixType.cchar | 
| pcdouble | Pointer to cdouble  type. | 
| pcfloat | Pointer to cfloat  type. | 
| pcint | Pointer to cInt  type. | 
| pcint16 | Pointer to 16-bit signed integer type | 
| pcint32 | Pointer to signed 32-bit integer type | 
| pcint64 | Pointer to signed 64-bit integer type | 
| pcint8 | Pointer to 8-bits signed integer type | 
| pClock | Pointer to TClock  type. | 
| pclong | Pointer to cLong  type. | 
| pclongdouble | Pointer to long double | 
| pclonglong | Pointer to longlong type. | 
| pcschar | Pointer to signed character type | 
| pcshort | Pointer to cShort  type. | 
| pcsigned | Pointer to signed integer | 
| pcsint | Pointer to signed integer | 
| pcslong | Pointer to signed long | 
| pcslonglong | Pointer to Signed longlong type | 
| pcsshort | Pointer to short signed integer type | 
| pcuchar | Pointer to #rtl.UnixType.cuchar | 
| pcuint | Pointer to cUInt  type. | 
| pcuint16 | Pointer to 16-bit unsigned integer type | 
| pcuint32 | Pointer to unsigned 32-bit integer type | 
| pcuint64 | Pointer to unsigned 64-bit integer type | 
| pcuint8 | Pointer to 8-bits unsigned integer type | 
| pculong | Pointer to cuLong  type. | 
| pculonglong | Unsigned longlong type | 
| pcunsigned | Pointer to #rtl.unixtype.cunsigned | 
| pcushort | Pointer to cuShort  type. | 
| pDev | Pointer to TDev  type. | 
| pGid | Pointer to TGid  type. | 
| pid_t | Process ID type. | 
| pIno | Pointer to TIno  type. | 
| pIno64 | Pointer to ino64_t | 
| pkDev | Pointer to TkDev  type. | 
| pmbstate_t | Pointer to mbstate_t  type | 
| pMode | Pointer to TMode  type. | 
| pnLink | Pointer to TnLink  type. | 
| pOff | Pointer to TOff  type. | 
| pOff64 | Pointer to off64_t type | 
| pPid | Pointer to TPid  type. | 
| pSize | Pointer to TSize  type. | 
| psize_t | Pointer to size_t  type. | 
| pSockLen | Pointer to TSockLen  type. | 
| pSSize | Pointer to TsSize  type | 
| PStatFS | Pointer to TStatFS  type. | 
| pthread_attr_t | Thread attributes record. Opaque. | 
| pthread_condattr_t | Conditional variable attributes type (opaque). | 
| pthread_cond_t | Thread conditional variable (opaque). | 
| pthread_key_t | Thread local storage key (opaque) | 
| pthread_mutexattr_t | Mutex attributes type (opaque). | 
| PTHREAD_MUTEX_T | Thread mutex type (opaque). | 
| pthread_rwlockattr_t | R/W lock attributes (opaque). | 
| pthread_rwlock_t | Read/Write lock type (opaque) | 
| pthread_t | Thread description record | 
| pTime | Pointer to TTime  type. | 
| ptimespec | Pointer to timespec  record. | 
| ptimeval | Pointer to timeval  record. | 
| ptime_t | Pointer to time_t  type. | 
| pUid | Pointer to TUid  type. | 
| pwchar_t | Pointer to wchar_t  type. | 
| sched_param | Scheduling parameter description record. | 
| sem_t | Semaphore type. (opaque) | 
| size_t | Size specification type. | 
| socklen_t | Socket address length type. | 
| ssize_t | Small size type. | 
| TClock | Alias for clock_t  type. | 
| TDev | Alias for dev_t  type. | 
| TGid | Alias for gid_t  type. | 
| timespec | Record specifying time interval. | 
| timeval | Time specification type. | 
| time_t | Time span type | 
| TIno | Alias for ino_t  type. | 
| TIno64 | Alias for ino64_t | 
| TIOCtlRequest | Opaque type used in FpIOCtl | 
| TkDev | Alias for kDev_t  type. | 
| TMode | Alias for mode_t  type. | 
| TnLink | Alias for nlink_t  type. | 
| TOff | Alias for off_t  type. | 
| TOff64 | Alias for off64_t type. | 
| TPid | Alias for pid_t  type. | 
| TSize | Alias for size_t  type | 
| TSockLen | Alias for socklen_t  type. | 
| TSSize | Alias for ssize_t  type | 
| TStatfs | Record describing a file system in the unix.fpstatfs  call. | 
| TTime | Alias for TTime  type. | 
| TTimeSpec | Alias for TimeSpec  type. | 
| TTimeVal | Alias for TimeVal  record. | 
| TUid | Alias for uid_t  type. | 
| uid_t | User ID type | 
| wchar_t | Wide character type. | 
| wint_t | Wide character size type. | 
| _pthread_fastlock | Fast lock (mutex) type (opaque). |