Header Files for UNIX-Type Functions

Programs using the UNIX^(R)-type functions must include one or more header files that contain information needed by the functions, such as:

Macro definitions
Data type definitions
Structure definitions
Function prototypes

The header files are provided in the QSYSINC library, which is optionally installable. Make sure QSYSINC is on your system before compiling programs that use these header files. For information on installing the QSYSINC library, see Include files and the QSYSINC Library.

The table below shows the file and member name in the QSYSINC library for each header file used by the UNIX-type APIs in this publication.

Name of Header File	Name of File in QSYSINC	Name of Member
arpa/inet.h	ARPA	INET
arpa/nameser.h	ARPA	NAMESER
bse.h	H	BSE
bsedos.h	H	BSEDOS
bseerr.h	H	BSEERR
dirent.h	H	DIRENT
errno.h	H	ERRNO
fcntl.h	H	FCNTL
grp.h	H	GRP
inttypes.h	H	INTTYPES
limits.h	H	LIMITS
mman.h	H	MMAN
netdbh.h	H	NETDB
netinet/icmp6.h	NETINET	ICMP6
net/if.h	NET	IF
netinet/in.h	NETINET	IN
netinet/ip_icmp.h	NETINET	IP_ICMP
netinet/ip.h	NETINET	IP
netinet/ip6.h	NETINET	IP6
netinet/tcp.h	NETINET	TCP
netinet/udp.h	NETINET	UDP
netns/idp.h	NETNS	IDP
netns/ipx.h	NETNS	IPX
netns/ns.h	NETNS	NS
netns/sp.h	NETNS	SP
net/route.h	NET	ROUTE
nettel/tel.h	NETTEL	TEL
os2.h	H	OS2
os2def.h	H	OS2DEF
pwd.h	H	PWD
Qlg.h	H	QLG
qp0lchsg.h	H	QP0LCHSG
qp0lflop.h	H	QP0LFLOP
qp0ljrnl.h	H	QP0LJRNL
qp0lror.h	H	QP0LROR
qp0lrro.h	H	QP0LRRO
qp0lrtsg.h	H	QP0LRTSG
qp0lscan.h	H	QP0LSCAN
Qp0lstdi.h	H	QP0LSTDI
qp0wpid.h	H	QP0WPID
qp0zdipc.h	H	QP0ZDIPC
qp0zipc.h	H	QP0ZIPC
qp0zolip.h	H	QP0ZOLIP
qp0zolsm.h	H	QP0ZOLSM
qp0zripc.h	H	QP0ZRIPC
qp0ztrc.h	H	QP0ZTRC
qp0ztrml.h	H	QP0ZTRML
qp0z1170.h	H	QP0Z1170
qsoasync.h	H	QSOASYNC
qtnxaapi.h	H	QTNXAAPI
qtnxadtp.h	H	QTNXADTP
qtomeapi.h	H	QTOMEAPI
qtossapi.h	H	QTOSSAPI
resolv.h	H	RESOLVE
semaphore.h	H	SEMAPHORE
signal.h	H	SIGNAL
spawn.h	H	SPAWN
ssl.h	H	SSL
sys/errno.h	H	ERRNO
sys/ioctl.h	SYS	IOCTL
sys/ipc.h	SYS	IPC
sys/layout.h	H	LAYOUT
sys/limits.h	H	LIMITS
sys/msg.h	SYS	MSG
sys/param.h	SYS	PARAM
sys/resource.h	SYS	RESOURCE
sys/sem.h	SYS	SEM
sys/setjmp.h	SYS	SETJMP
sys/shm.h	SYS	SHM
sys/signal.h	SYS	SIGNAL
sys/socket.h	SYS	SOCKET
sys/stat.h	SYS	STAT
sys/statvfs.h	SYS	STATVFS
sys/time.h	SYS	TIME
sys/types.h	SYS	TYPES
sys/uio.h	SYS	UIO
sys/un.h	SYS	UN
sys/wait.h	SYS	WAIT
ulimit.h	H	ULIMIT
unistd.h	H	UNISTD
utime.h	H	UTIME

You can display a header file in QSYSINC by using one of the following methods:

Using your editor. For example, to display the unistd.h header file using the Source Entry Utility editor, enter the following command:
```
STRSEU SRCFILE(QSYSINC/H) SRCMBR(UNISTD) OPTION(5)
```
Using the Display Physical File Member command. For example, to display the sys/stat.h header file, enter the following command:
```
DSPPFM FILE(QSYSINC/SYS) MBR(STAT)
```

You can print a header file in QSYSINC by using one of the following methods:

Using your editor. For example, to print the unistd.h header file using the Source Entry Utility editor, enter the following command:
```
STRSEU SRCFILE(QSYSINC/H) SRCMBR(UNISTD) OPTION(6)
```
Using the Copy File command. For example, to print the sys/stat.h header file, enter the following command:
```
CPYF FROMFILE(QSYSINC/SYS) TOFILE(*PRINT) FROMMBR(STAT)
```

Symbolic links to these header files are also provided in directory /QIBM/include.

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