NAME | SYNOPSIS | API RESTRICTIONS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO | BUGS
$(OS_DIR)/lib/libc.a #include <sys/types.h> #include <netns/ns.h>struct ns_addr ns_addr(char * cp);
The function or functions documented here may not be used safely in all application contexts with all APIs provided in the ChorusOS 5.0 product.
See API(5FEA) for details.
The ns_addr() routine interprets character strings representing XNS addresses, returning binary information suitable for use in system calls. The ns_ntoa() routine takes XNS addresses and returns ASCII strings representing the address in a notation in common use in the Xerox Development Environment:
<network number>.<host number>.<port number>
Trailing zero fields are suppressed and each number is printed in hexadecimal, in a format suitable for input to ns_addr() . Any fields lacking super-decimal digits will have a trailing H appended.
There is no universal standard for representing XNS addresses. An effort has been made to ensure that ns_addr() is compatible with most formats in common use. It will first separate an address into 1 to 3 fields using a single delimiter which is either dot (".") , colon (":") or pound-sign ("#") . Each field is then examined for byte separators (colon or dot). If there are byte separators, each subfield separated is taken to be a small hexadecimal number, and the entirety is taken as a network-byte-ordered quantity to be zero extended in the high-network-order bytes. Next, the field is inspected for hyphens, in which case the field is assumed to be a number in decimal notation with hyphens separating the millenia. Next, the field is assumed to be a number. It is interpreted as hexadecimal if there is a leading 0x (as in C), a trailing H (as in Mesa), or if there are any super-decimal digits present. It is interpreted as octal if there is a leading 0 and there are no super-octal digits. Otherwise, it is converted to a decimal number.
None.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE | ATTRIBUTE VALUE |
---|---|
Interface Stability | Evolving |
The string returned by ns_ntoa() resides in a static memory area. The function ns_addr() should diagnose improperly formed input, and there should be an unambiguous way to recognize this.
NAME | SYNOPSIS | API RESTRICTIONS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO | BUGS