getdomainname man page on MacOSX

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GETDOMAINNAME(3)	 BSD Library Functions Manual	      GETDOMAINNAME(3)

NAME
     getdomainname, setdomainname — get/set NIS domain name of current host

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     int
     getdomainname(char *name, int namelen);

     int
     setdomainname(const char *name, int namelen);

DESCRIPTION
     Getdomainname() returns the standard NIS domain name for the current
     host, as previously set by setdomainname().  The parameter namelen speci‐
     fies the size of the name array.  The returned name is null-terminated
     unless insufficient space is provided.

     Setdomainname() sets the NIS domain name of the host machine to be name,
     which has length namelen.	This call is restricted to the super-user and
     is normally used only when the system is bootstrapped.

RETURN VALUES
     Upon successful completion, the value 0 is returned; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS
     The following errors may be returned by these calls:

     [EFAULT]		The name or namelen parameter gave an invalid address.

     [EPERM]		The caller tried to set the hostname and was not the
			super-user.

SEE ALSO
     gethostid(3), gethostname(3), sysctl(3)

BUGS
     Domain names are limited to MAXHOSTNAMELEN (from ⟨sys/param.h⟩) charac‐
     ters, currently 256.

HISTORY
     The getdomainname() function call appeared in 4.2BSD.

BSD				  May 6, 1994				   BSD
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