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Diffstat (limited to 'man3/getnetent.3')
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diff --git a/man3/getnetent.3 b/man3/getnetent.3 new file mode 100644 index 000000000..41fa510b6 --- /dev/null +++ b/man3/getnetent.3 @@ -0,0 +1,111 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified Sat Jul 24 21:48:06 1993 by Rik Faith (faith@cs.unc.edu) +.TH GETNETENT 3 1993-05-15 "BSD" "Linux Programmer's Manual" +.SH NAME +getnetent, getnetbyname, getnetbyaddr, setnetent, endnetent \- +get network entry +.SH SYNOPSIS +.nf +.B #include <netdb.h> +.sp +.B struct netent *getnetent(void); +.sp +.BI "struct netent *getnetbyname(const char *" name ); +.sp +.BI "struct netent *getnetbyaddr(long " net ", int " type ); +.sp +.BI "void setnetent(int " stayopen ); +.sp +.B void endnetent(void); +.fi +.SH DESCRIPTION +The \fBgetnetent()\fP function reads the next line from the file +\fI/etc/networks\fP and returns a structure \fInetent\fP containing +the broken out fields from the line. The \fI/etc/networks\fP file +is opened if necessary. +.PP +The \fBgetnetbyname()\fP function returns a \fInetent\fP structure +for the line from \fI/etc/networks\fP that matches the network +\fIname\fP. +.PP +The \fBgetnetbyaddr()\fP function returns a \fInetent\fP structure +for the line that matches the network number \fInet\fP of type +\fItype\fP. +.PP +The \fBsetnetent()\fP function opens and rewinds the +\fI/etc/networks\fP file. If \fIstayopen\fP is true (1), then the +file will not be closed between calls to \fBgetnetbyname()\fP and +\fBgetnetbyaddr()\fP. +.PP +The \fBendservent()\fP function closes \fI/etc/networks\fP. +.PP +The \fInetent\fP structure is defined in \fI<netdb.h>\fP as follows: +.sp +.RS +.nf +.ne 6 +.ta 8n 16n 34n +struct netent { + char *n_name; /* official network name */ + char **n_aliases; /* alias list */ + int n_addrtype; /* net address type */ + unsigned long int n_net; /* network number */ +} +.ta +.fi +.RE +.PP +The members of the \fInetent\fP structure are: +.TP +.I n_name +The official name of the network. +.TP +.I n_aliases +A zero terminated list of alternative names for the network. +.TP +.I n_addrtype +The type of the network number; always AF_INET. +.TP +.I n_net +The network number in host byte order. +.SH "RETURN VALUE" +The \fBgetnetent()\fP, \fBgetnetbyname()\fP and \fBgetnetbyaddr()\fP +functions return the \fInetent\fP structure, or a NULL pointer if an +error occurs or the end of the file is reached. +.SH FILES +.TP +.I /etc/networks +networks database file +.SH "CONFORMING TO" +BSD 4.3 +.SH "SEE ALSO" +.BR getprotoent (3), +.BR getservent (3), +.BR networks (5) +.br +RFC 1101 |