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RocketLink!--> Man page versions: OpenBSD FreeBSD Solaris Others

GETHOSTNAME(3)            OpenBSD Programmer's Manual           GETHOSTNAME(3)

     gethostname, sethostname - get/set name of current host

     #include <unistd.h>

     gethostname(char *name, size_t namelen);

     sethostname(const char *name, size_t namelen);

     The gethostname() function returns the standard host name for the current
     processor, as previously set by sethostname().  The parameter namelen
     specifies the size of the name array.  If insufficient space is provided,
     the returned name is truncated.  The returned name is always null termi-

     sethostname() sets the 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.

     If the call succeeds a value of 0 is returned.  If the call fails, a val-
     ue of -1 is returned and an error code is placed in the global variable

     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-

     hostname(1),  getdomainname(3),  gethostid(3),  sysctl(3),  sysctl(8),

     Host names are limited to MAXHOSTNAMELEN (from <sys/param.h>) characters,
     currently 256.  This includes the terminating NUL character.

     If the buffer passed to gethostname() is smaller than MAXHOSTNAMELEN,
     other operating systems may not guarantee termination with NUL.

     The gethostname() function call appeared in 4.2BSD.

     The gethostname() function call conforms to X/Open Portability Guide
     Issue 4.2 (``XPG4.2'').

OpenBSD 2.6                      June 4, 1993                                1

Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.

(Corrections, notes, and links courtesy of RocketAware.com)

[Detailed Topics]
FreeBSD Sources for gethostname(3) functions
OpenBSD sources for gethostname(3)

[Overview Topics]

Up to: Host, service name, and address operations - Methods and functions for doing address, host, user, and service name lookups (DNS). also Internet Assigned Numbers

RocketLink!--> Man page versions: OpenBSD FreeBSD Solaris Others

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