Content-type: text/html Man page of setprotoent

setprotoent

Section: C Library Functions (3)
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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);

[Digital]  The following function is supported in order to maintain backward compatibility with previous versions of the operating system. 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 compatibility (see standards(5)):

int setprotoent(        int stay_open);
 

STANDARDS

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

setprotoent(): XPG4-UNIX

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 setprotoent() function. Specifying a nonzero value allows the protocols file to remain open after each function. [Digital]  For setprotoent_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

[Digital]  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.

[Digital]  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

[Digital]  Upon successful completion, the version of setprotoent() provided for backward compatibility returns a value of 1. Otherwise, it returns a value of 0 (zero).  

ERRORS

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

[Digital]  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


 

Index

NAME
LIBRARY
SYNOPSIS
STANDARDS
PARAMETERS
DESCRIPTION
NOTES
RETURN VALUES
ERRORS
FILES
RELATED INFORMATION

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Time: 02:41:47 GMT, October 02, 2010