setprotoent(3)						     Library Functions Manual						    setprotoent(3)

NAME

       setprotoent, setprotoent_r - Open or rewind the protocols file

LIBRARY

       Standard C Library (libc.so, libc.a)

SYNOPSIS

       #include <netdb.h>
       void setprotoent(      int stay_open);

       [Tru64  UNIX]  The following function is supported in order to maintain backward compatibility with previous versions of the operating sys-
       tem.  int setprotoent_r(      int stay_open,	 struct protoent_data *proto_data);

       The following definition of the setprotoent() function does not conform to current standards and is supported only for backward compatibil-
       ity (see standards(5)):

       int setprotoent(      int stay_open);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       setprotoent():  XNS4.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Indicates  when	to  close  the	protocols file. Specifying a value of 0 (zero) causes the file to be closed after each call to the setpro-
       toent() function.  Specifying a nonzero value allows the protocols file to remain open after  each  function.   [Tru64  UNIX]  For  setpro-
       toent_r() only, this points at a structure where setprotoent_r() stores information about the protocols file.

DESCRIPTION

       The  setprotoent()  (set protocol entry) function opens either the local /etc/protocols file or the NIS distributed protocols file and sets
       the file marker to the beginning of the file. To determine which file or files to search, and in which order, the system uses the  switches
       in the /etc/svc.conf file.

NOTES

       [Tru64  UNIX]  The  setprotoent_r()  function is the reentrant version of the setprotoent() function.  It is supported in order to maintain
       backward compatibility with previous versions of the operating system.  Upon successful completion, the setprotoent_r() function returns  a
       value of 0 (zero).  Otherwise, it returns a value of -1.

       [Tru64 UNIX]  Note that before calling the setprotoent_r() function for the first time, you must zero-fill the protoent_data structure. The
       netdb.h header file defines the protoent_data structure.

RETURN VALUES

       [Tru64 UNIX]  Upon successful completion, the version of setprotoent() provided for backward compatibility returns a value  of  1.   Other-
       wise, it returns a value of 0 (zero).

ERRORS

       Current industry standards do not define error values for the setprotoent() function.

       [Tru64 UNIX]  If any of the following conditions occurs, the setprotoent_r() function sets errno to the corresponding value: The proto_data
       parameter is invalid.

       In addition, the setprotoent(), backward compatible version of setprotoent(), and setprotoent_r() functions can fail to open the file.	In
       this case, errno will be set to the failure.

FILES

       Contains the protocol names.  The database service selection configuration file.

RELATED INFORMATION

       Functions: endprotoent(3), getprotobyname(3), getprotobynumber(3), getprotoent(3).

       Files: protocols(4), svc.conf(4).

       Networks: nis_intro(7).

       Standards: standards(5).  delim off

																    setprotoent(3)