*** UNIX MANUAL PAGE BROWSER ***

setnetent(3) Library Functions Manual setnetent(3) NAME setnetent, setnetent_r, endnetent, endnetent_r - Opens, rewinds, or closes the networks file LIBRARY Standard C Library (libc.so, libc.a) SYNOPSIS #include <netdb.h> void setnetent( int stay_open); void endnetent(void); [Digital] The following functions are supported in order to maintain backward compatibility with previous versions of the operating system. int setnetent_r( int stay_open, struct netent_data *net_data); void endnetent_r( struct netent_data *net_data); The following definition of the setnetent() function does not conform to current standards and is supported only for backward compatibility (see standards(5)): int setnetent( int stay_open); STANDARDS Interfaces documented on this reference page conform to industry stan- dards as follows: setnetent(): XPG4-UNIX endnetent(): XPG4-UNIX Refer to the standards(5) reference page for more information about in- dustry standards and associated tags. PARAMETERS Specifies a value that indicates when to close the networks file. Specifying a value of 0 (zero) closes the networks file after each call to the getnetent() function. Specifying a nonzero value leaves the networks database file open after each call. [Digital] For setne- tent_r() and endnetent_r() only, this points at a structure where set- netent_r() and endnetent_r() store information about the networks file. DESCRIPTION The setnetent() (set network entry) function opens the either the local /etc/networks file or the NIS distributed networks file and sets the file marker at 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. The endnetent() function closes the networks file, previously opened with the getnetent(), getnetbyaddr(), setnetent(), or getnetbyname() function. If the setnetent() function is called with a non-zero stay_open parame- ter, the connection remains until the endnetent() or exit() functions are called. NOTES [Digital] The setnetent_r() function is the reentrant version of the setnetent() function. It is supported in order to maintain backward compatibility with previous versions of the operating system. Upon successful completion, the setnetent_r() function returns a value of 0 (zero). Otherwise, it returns a value of -1. [Digital] Note that when you first call the setnetent_r() function, you must set to NULL the net_fp field of the netent_data structure. The netdb.h header file defines the netent_data structure. [Digital] The endnetent_r() function is the reentrant version of the endnetent() function. It is supported in order to maintain backward compatibility with previous versions of the operating system. The netdb.h header file defines the netent_data structure. RETURN VALUES Upon successful completion, the backward compatible version of the set- netent() function returns a value of 1. Otherwise, it returns a value of 0 (zero). The setnetent, endnetent(), and endnetent_r() functions do not return a value. ERRORS Current industry standards do not define error values for the setne- tent() and endnetent functions. [Digital] If any of the following conditions occurs, the setnetent_r() function sets errno to the corresponding value: If net_data is invalid. In addition, the setnetent(), backward compatible version of setne- tent(), and setnetent_r() functions can fail to open the file. In this case, errno will be set to the appropriate value. FILES This file is the DARPA Internet network name database file. Each record in the file occupies a single line and has three fields: the official network name, the network number, and alias. The database service se- lection configuration file. RELATED INFORMATION Functions: getnetbyaddr(3), getnetbyname(3), getnetent(3). Files: networks(4), svc.conf(4). Networks: nis_intro(7). Standards: standards(5). delim off setnetent(3)