'\" te .\" Copyright (c) 1992, X/Open Company Limited All Rights Reserved .\" Portions Copyright (C) 2002, Sun Microsystems, Inc. All Rights Reserved .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/. .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html. This notice shall appear on any product containing this material. .TH endservent 3XNET "14 Jun 2002" "SunOS 5.11" "X/Open Networking Services Library Functions" .SH NAME endservent, getservbyport, getservbyname, getservent, setservent \- network services database functions .SH SYNOPSIS .LP .nf \fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lxnet\fR [ \fIlibrary\fR ... ] #include \fBvoid\fR \fBendservent\fR(void) .fi .LP .nf \fBstruct servent *\fR\fBgetservbyname\fR(\fBconst char *\fR\fIname\fR, \fBconst char *\fR\fIproto\fR); .fi .LP .nf \fBstruct servent *\fR\fBgetservbyport\fR(\fBint\fR \fIport\fR, \fBconst char *\fR\fIproto\fR); .fi .LP .nf \fBstruct servent *\fR\fBgetservent\fR(void) .fi .LP .nf \fBvoid\fR \fBsetservent\fR(\fBint\fR \fIstayopen\fR); .fi .SH DESCRIPTION .sp .LP The \fBgetservbyname()\fR, \fBgetservbyport()\fR and \fBgetservent()\fR functions each return a pointer to a \fBservent\fR structure, the members of which contain the fields of an entry in the network services database. .sp .LP The \fBgetservent()\fR function reads the next entry of the database, opening a connection to the database if necessary. .sp .LP The \fBgetservbyname()\fR function searches the database from the beginning and finds the first entry for which the service name specified by \fIname\fR matches the \fBs_name\fR member and the protocol name specified by \fIproto\fR matches the \fBs_proto\fR member, opening a connection to the database if necessary. If \fIproto\fR is a null pointer, any value of the \fBs_proto\fR member will be matched. .sp .LP The \fBgetservbyport()\fR function searches the database from the beginning and finds the first entry for which the port specified by \fIport\fR matches the \fBs_port\fR member and the protocol name specified by \fIproto\fR matches the \fBs_proto\fR member, opening a connection to the database if necessary. If \fIproto\fR is a null pointer, any value of the \fBs_proto\fR member will be matched. The \fIport\fR argument must be in network byte order. .sp .LP The \fBsetservent()\fR function opens a connection to the database, and sets the next entry to the first entry. If the \fIstayopen\fR argument is non-zero, the net database will not be closed after each call to the \fBgetservent()\fR function, either directly, or indirectly through one of the other \fBgetserv*()\fR functions. .sp .LP The \fBendservent()\fR function closes the database. .SH USAGE .sp .LP The \fIport\fR argument of \fBgetservbyport()\fR need not be compatible with the port values of all address families. .sp .LP The \fBgetservent()\fR, \fBgetservbyname()\fR and \fBgetservbyport()\fR functions may return pointers to static data, which may be overwritten by subsequent calls to any of these functions. .sp .LP These functions are generally used with the Internet address family. .SH RETURN VALUES .sp .LP On successful completion, \fBgetservbyname()\fR, \fBgetservbyport()\fR and \fBgetservent()\fR return a pointer to a \fBservent\fR structure if the requested entry was found, and a null pointer if the end of the database was reached or the requested entry was not found. Otherwise, a null pointer is returned. .SH ERRORS .sp .LP No errors are defined. .SH ATTRIBUTES .sp .LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .sp .TS tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPEATTRIBUTE VALUE _ Interface StabilityStandard _ MT-LevelMT-Safe .TE .SH SEE ALSO .sp .LP \fBendhostent\fR(3XNET), \fBendprotoent\fR(3XNET), \fBhtonl\fR(3XNET), \fBinet_addr\fR(3XNET), \fBattributes\fR(5), \fBstandards\fR(5)