uname(2)							System Calls Manual							  uname(2)

NAME

       uname(), setuname() - get information about computer system; set node name (system name)

SYNOPSIS

DESCRIPTION

   uname()
       The system call places information identifying the computer system in the structure pointed to by name.

       The structure, defined in is set up as follows:

       Each field is a null-terminated string.

       The field contains the name of the operating system, on standard HP-UX systems.

       The field contains the name by which the computer system is known in a communications network.

       The field contains the release identifier of the operating system, such as

       The  field  contains  additional information about the operating system.  This value can change in future releases.  The first character of
       the field identifies the license level:

	      Two-user system
	      16-user system
	      32-user system
	      64-user system
	      8-user system
	      128-user, 256-user, or unlimited-user system

       The field contains the hardware and model identifiers of the computer system.  On this field always returns

       The field contains a unique identification number within that class of hardware, possibly a hardware or software serial number.	This field
       contains a null string if there is no identification number.  On systems this number may not be unique.	To get a unique id, use the option
       of

   setuname()
       The system call sets the node name (system name), as returned in the field of the structure, to name, which has a length of namelen charac-
       ters.  This is usually executed by at system boot time.	Names are limited to 1 characters; is defined in

   Security Restrictions
       The  actions  associated with this system call require the privilege Processes owned by the superuser have this privilege.  Processes owned
       by other users may have this privilege, depending on system configuration.

       See privileges(5) for more information about privileged access on systems that support fine-grained privileges.

RETURN VALUE

       and return the following values:

	      Successful completion.
		     n is a nonnegative value.
	      Failure.
		     is set to indicate the error.

       The function may return truncated results when the non-expanded version of the structure is used.  See

ERRORS

       If or fails, is set to one of the following values.

       name		 points to an illegal address.	The reliable detection of this error is implementation dependent.

       was attempted by a process lacking
			 appropriate privileges.

       This error may be detected and indicates that the
			 structure version used does not accommodate the full values of one or more fields.

WARNINGS

       returns one of two versions of the structure:

	      o  HP-UX compatible version (compatible with all HP-UX versions)

	      o  Expanded version of the structure which can accommodate larger values.

       The compatible structure is used by default.  To use the expanded structure, see nodehostnamesize(5).

       If the administrator has configured a node name with a length larger than 8 bytes, the compatible version of the structure, as returned	by
       contains just the first 8 bytes (plus null) in the field.  In a future release the field will not contain any data bytes if the entire node
       name cannot fit.

       Setting a node name of more than 8 bytes with is only possible with the appropriate configuration options enabled.  It is  strongly  recom-
       mended  that  all  related  documentation  be completely understood before setting a larger node name.  A node name larger than 8 bytes can
       cause anomalous behavior or failure in applications which use the command or the system function to access the name.

       It is recommended that, whenever possible, programs use the host name as returned by the function rather than the field.  It can be given a
       sufficiently large buffer to avoid truncation issues.  See gethostname(2) for more information.

AUTHOR

       was developed by AT&T and HP.

SEE ALSO

       hostname(1), uname(1), setuname(1M), gethostname(2), sethostname(2), nodehostnamesize(5), privileges(5).

STANDARDS CONFORMANCE

																	  uname(2)