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1 perry 1 GETNETENT
2 !!!GETNETENT
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 RETURN VALUE
7 FILES
8 CONFORMING TO
9 SEE ALSO
10 ----
11 !!NAME
12
13
14 getnetent, getnetbyname, getnetbyaddr, setnetent, endnetent - get network entry
15 !!SYNOPSIS
16
17
18 __#include
19 __''name''__);
20 struct netent *getnetbyaddr(long__ ''net''__, int__ ''type''__);
21 void setnetent(int__ ''stayopen''__);
22 void endnetent(void);
23 __
24 !!DESCRIPTION
25
26
27 The __getnetent()__ function reads the next line from the
28 file ''/etc/networks'' and returns a structure
29 ''netent'' containing the broken out fields from the
30 line. The ''/etc/networks'' file is opened if
31 necessary.
32
33
34 The __getnetbyname()__ function returns a ''netent''
35 structure for the line from ''/etc/networks'' that
36 matches the network ''name''.
37
38
39 The __getnetbyaddr()__ function returns a ''netent''
40 structure for the line that matches the network number
41 ''net'' of type ''type''.
42
43
44 The __setnetent()__ function opens and rewinds the
45 ''/etc/networks'' file. If ''stayopen'' is true (1),
46 then the file will not be closed between calls to
47 __getnetbyname()__ and
48 __getnetbyaddr()__.
49
50
51 The __endservent()__ function closes
52 ''/etc/networks''.
53
54
55 The ''netent'' structure is defined in
56 '''' as follows:
57
58
59 struct netent {
60 char *n_name; /* official network name */
61 char **n_aliases; /* alias list */
62 int n_addrtype; /* net address type */
63 unsigned long int n_net; /* network number */
64 }
65
66
67 The members of the ''netent'' structure are:
68
69
70 ''n_name''
71
72
73 The official name of the network.
74
75
76 ''n_aliases''
77
78
79 A zero terminated list of alternative names for the
80 network.
81
82
83 ''n_addrtype''
84
85
86 The type of the network number; always AF_INET.
87
88
89 ''n_net''
90
91
92 The network number in host byte order.
93 !!RETURN VALUE
94
95
96 The __getnetent()__, __getnetbyname()__ and
97 __getnetbyaddr()__ functions return the ''netent''
98 structure, or a NULL pointer if an error occurs or the end
99 of the file is reached.
100 !!FILES
101
102
103 /etc/networks networks database file
104 !!CONFORMING TO
105
106
107 BSD 4.3
108 !!SEE ALSO
109
110
111 getprotoent(3), getservent(3),
112 networks(5)
113 RFC 1101
114 ----
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