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getprotobyname() z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference SC27-3660-00 |
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The getprotobyname() call searches the hlq.ETC.PROTO data set for the specified protocol name. The getprotobyname() call returns a pointer to a protoent structure for the network protocol specified on the call.
The protoent structure
is defined in the NETDB.H header file and contains the following elements:
Return valuesThe return value points to static data that is overwritten by subsequent calls. A pointer to a protoent structure indicates success. A NULL pointer indicates an error or end-of-file. When a NULL pointer or 0 is returned, the value of errno is indeterminate, and therefore, the output from a tcperror() call cannot be validated. Related callsendprotoent(), getprotobynumber(), getprotoent(), setprotoent() |
Copyright IBM Corporation 1990, 2014
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