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Standard C Library Functionsgethostname(3C)


NAME

 gethostname, sethostname - get or set name of current host

SYNOPSIS

 
#include <unistd.h>
int gethostname(char *name, int namelen);
 int sethostname(char *name, int namelen);

DESCRIPTION

 

The gethostname() function returns the standard host name for the current processor, as previously set by sethostname(). The namelen argument specifies the size of the array pointed to by name. The returned name is null-terminated unless insufficient space is provided.

The sethostname() function sets the name of the host machine to be name, which has length namelen. This call is restricted to the superuser and is normally used only when the system is bootstrapped.

Host names are limited to MAXHOSTNAMELEN characters, currently 256, defined in the <netdb.h> header.

RETURN VALUES

 

Upon successful completion, gethostname() and sethostname() return 0. Otherwise, they return -1 and set errno to indicate the error.

ERRORS

 

The gethostname() and sethostname() functions will fail if:

EFAULT
The name or namelen argument gave an invalid address.

The sethostname() function will fail if:

EPERM
The caller was not the superuser.

ATTRIBUTES

 

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelMT-Safe

SEE ALSO

 

sysinfo(2), uname(2), gethostid(3C), attributes(5)


SunOS 5.9Go To TopLast Changed 27 Jun 2000

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.