NAME

optoverhead() − return number of bytes needed by a NetIPC option

SYNOPSIS

#include <sys/ns_ipc.h>

int optoverhead(short eventualentries, short ∗result);

DESCRIPTION

optoverhead returns the number of bytes needed by the opt parameter, excluding the data area. 

PARAMETERS

eventualentries (input parameter) The number of option entries that will be placed in the opt parameter. 

result (output parameter) The result code returned.  See "Diagnostics" below for more information. 

RETURN VALUE

Upon successful completion, optoverhead() returns a 16-bit integer value indicating the number of bytes requires for the opt parameter, not including the data portion of the parameter. 

ERRORS

[NSR_NO_ERROR] The call was successful. 

[NSR_OPT_TOTAL] The num_entries parameter is negative. 

AUTHOR

optoverhead was developed by HP. 

SEE ALSO

ipcconnect(2), ipccontrol(2), ipccreate(2), ipcdest(2), ipcgetnodename(2), ipclookup(2), ipcname(2), ipcnamerase(2), ipcrecv(2), ipcrecvcn(2), ipcselect(2), ipcsend(2), ipcsetnodename(2), ipcshutdown(2), addopt(3N), initopt(3N), ipcerrmsg(3N), readopt(3N). 

Hewlett-Packard Company  —  HP-UX Release 9.10: April 1995