gethostname(3C-ucb) (BSD Compatibility Package) gethostname(3C-ucb)
NAME
gethostname, sethostname - get/set name of current host
SYNOPSIS
/usr/ucb/cc [flag ...] file ... -lucb
int gethostname(char *name, int namelen);
int sethostname(char *name, int namelen);
DESCRIPTION
gethostname() returns the standard host name for the current proces-
sor, as previously set by sethostname(). The parameter namelen speci-
fies the size of the array pointed to by name. The returned name is
null-terminated unless insufficient space is provided.
sethostname() sets the name of the host machine to be name, which has
length namelen. This call is restricted to the privileged user and is
normally used only when the system is bootstrapped.
RETURN VALUE
If the call succeeds a value of 0 is returned. If the call fails, then
a value of -1 is returned and an error code is placed in the global
location errno.
ERRORS
The following error code descriptions are function-specific. You will
find a general description in introprm2(2) or in errno(5).
The following error may be returned by these calls:
EFAULT The name or namelen parameter gave an invalid address.
EPERM The caller was not the privileged user. This error only
applies to sethostname().
NOTES
Host names are limited to MAXHOSTNAMELEN characters, currently 256
(see the param.h header file).
SEE ALSO
uname(2), gethostid(3N).
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