The sys/types.h header file defines a collection of typedef symbols
and structures.
Table 1. sys/types.h:
_OE_SOCKETS or _ALL_SOURCE| u_char |
unsigned char |
| u_int |
unsigned int |
| ushort |
unsigned short |
| u_short |
unsigned short |
| u_long |
unsigned long |
Table 2. sys/types.h:
_OE_SOCKETS or _XOPEN_SOURCE_EXTENDED 1| in_addr_t |
Internet address |
| ip_addr_t |
Internet address |
| caddr_t |
Used for message data pointer |
Table 3. sys/types.h: _OPEN_THREADS| pthread_t |
Identify a thread |
| pthread_attr_t |
Identify a thread attribute object |
| pthread_mutex_t |
Mutexes |
| pthread_mutexattr_t |
Identify a mutex attribute object |
| pthread_cond_t |
Condition variables |
| pthread_condattr_t |
Identify a condition attribute object |
| pthread_key_t |
Thread-specific data keys |
| pthread_once_t |
Dynamic package initialization |
Table 4. sys/types.h: _POSIX_SOURCE| dev_t |
Device numbers |
| gid_t |
Group IDs |
| ino_t |
File serial numbers |
| mode_t |
Some file attributes |
| nlink_t |
Link counts |
| off_t |
File sizes, long |
| pid_t |
Process IDs and process group ids |
| size_t |
unsigned long |
| ssize_t |
Signed long |
| uid_t |
user IDs |
| time_t |
Time values |
| clock_t |
Time values, int |
| sigset_t |
Signal set |
| cc_t |
cc_t |
| tty control chars |
|
| speed_t |
tty baud rate |
| tcflag_t |
tty modes |
| mtm_t |
Mount requests |
| rdev_t |
Device numbers |
Table 5. sys/types.h:
_XOPEN_SOURCE| key_t |
Interprocess communications, long |
Table 6. sys/types.h:
_XOPEN_SOURCE 500| blksize_t |
Block sizes |
| blkcnt_t |
File block counts |
| fsblkcnt_t |
Filesystem block counts |
| fsfilcnt_t |
File serial numbers |
| suseconds_t |
Time values in range [-1,1,000,000] |
Table 7. sys/types.h:
_XOPEN_SOURCE_EXTENDED 1| id_t |
General identifier, can contain a pid_t or a gid_t |
| useconds_t |
Microseconds |
| sa_family_t |
Address family |
| in_port_t |
AF_INET port |