ultrix man page for setsysinfo

setsysinfo(2)							System Calls Manual						     setsysinfo(2)

Name
       setsysinfo - set system information

Syntax
       #include <sys/types.h>
       #include <sys/sysinfo.h>

       setsysinfo(op, buffer, nbytes, arg, flag)
       unsigned   op;
       char	 *buffer;
       unsigned   nbytes;
       unsigned   arg;
       unsigned   flag;

Description
       The  system  call  modifies system information.	The op argument specifies the operation to be performed.  Values for op are defined in the
       header file.  The optional buffer and nbytes arguments are used to pass data, which varies depending upon op.  When buffer and  nbytes  are
       not  required,  they should be set to NULL.  The optional arg argument can be used with certain op values for additional information.  When
       arg is not required, it should be set to NULL.  The optional flag argument can be used with certain op and arg values for additional infor-
       mation.	When flag is not required it should be set to NULL.

       Possible op values are:

       op = SSI_NVPAIRS
	    Use  a list of name-value pairs to modify predefined system variables.  Buffer is an array of name-value pairs, where name is one of a
	    predefined set of system variables defined in the <sys/sysinfo.h> header file.

	    Possible name values are:

	    SSIN_NFSPORTMON
		 A Boolean that determines whether incoming NFS traffic is originating at a privileged port or not.

	    SSIN_NFSSETLOCK
		 A Boolean that determines whether NFS (daemon) style file and record locking are enabled or not.

	    SSIN_PROG_ENV
		 Set the compatibility mode of the process. Possible values are A_BSD, A_POSIX, or A_SYSV.

	    SSIN_UACSYS (RISC only)
		 A Boolean that determines whether or not the system prints an "unaligned access fixup" message.  Use of this is restricted to the
		 superuser.

	    SSIN_UACPARNT (RISC only)
		 A  Boolean  that  is  set in the current process's parent proc structure.  It turns printing of ``unaligned access fixups'' on or
		 off.  This flag is inherited across forks and execs.  If parent is init, it returns EPERM.

	    SSIN_UACPROC (RISC only)
		 A Boolean value that is set in the proc structure to turn off/on printing of ``unaligned access fixup'' messages.  This  flag	is
		 inherited across forks and execs.

	    The  value	is  a legal value for name.  The nbytes argument defines the number of name-value pairs in buffer.  The arg and flag argu-
	    ments are not used.

       op = SSI_ZERO_STRUCT
	    Each member of a system structure is set to zero.  The arg defines the structure type.

	    Possible values for arg are:

	    SSIS_NFS_CLSTAT
		 NFS client statistics.

	    SSIS_NFS_SVSTAT
		 NFS server statistics.

	    SSIS_RPC_STAT
		 RPC statistics.  The flag argument is used for a particular arg value, to further define the operation or a resultant	action	to
		 be performed.	The buffer and nbytes arguments are not used.

	    Permission checking is done on a structure-by-structure basis.

       op = SSI_SET_STRUCT
	    Each member of a system structure is set to a supplied value. The arg defines the structure type.

	    Possible  values  for  arg	are  as  defined for op SSI_STRUCT_ZERO.  The flag argument is used for a particular arg value, to further
	    define the operation or a resultant action to be performed.  The buffer argument is the address of a structure of the appropriate type
	    that contains the desired values.  The nbytes argument specifies the amount of data to be transferred that is stored at buffer.

Return Values
       A zero (0) is returned if the call succeeds. If the call fails, -1 is returned, and the global variable errno is set to indicate the error.

Diagnostics
       [EFAULT]       Either buffer or arg causes an illegal address to be referenced.

       [EINVAL]       The op, arg, or flag argument is invalid.

       [EPERM]	      Permission is denied for the operation requested

See Also
       getsysinfo(2)

																     setsysinfo(2)