version 1, including all changes.
.
Rev |
Author |
# |
Line |
1 |
perry |
1 |
GETSERVENT |
|
|
2 |
!!!GETSERVENT |
|
|
3 |
NAME |
|
|
4 |
SYNOPSIS |
|
|
5 |
DESCRIPTION |
|
|
6 |
RETURN VALUE |
|
|
7 |
FILES |
|
|
8 |
CONFORMING TO |
|
|
9 |
SEE ALSO |
|
|
10 |
---- |
|
|
11 |
!!NAME |
|
|
12 |
|
|
|
13 |
|
|
|
14 |
getservent, getservbyname, getservbyport, setservent, endservent - get service entry |
|
|
15 |
!!SYNOPSIS |
|
|
16 |
|
|
|
17 |
|
|
|
18 |
__#include |
|
|
19 |
__''name''__, const char *__''proto''__); |
|
|
20 |
struct servent *getservbyport(int__ ''port''__, const char *__''proto''__); |
|
|
21 |
void setservent(int__ ''stayopen''__); |
|
|
22 |
void endservent(void); |
|
|
23 |
__ |
|
|
24 |
!!DESCRIPTION |
|
|
25 |
|
|
|
26 |
|
|
|
27 |
The __getservent()__ function reads the next line from |
|
|
28 |
the file ''/etc/services'' and returns a structure |
|
|
29 |
''servent'' containing the broken out fields from the |
|
|
30 |
line. The ''/etc/services'' file is opened if |
|
|
31 |
necessary. |
|
|
32 |
|
|
|
33 |
|
|
|
34 |
The __getservbyname()__ function returns a ''servent'' |
|
|
35 |
structure for the line from ''/etc/services'' that |
|
|
36 |
matches the service ''name'' using protocol ''proto''. |
|
|
37 |
If ''proto'' is NULL, any protocol will be |
|
|
38 |
matched. |
|
|
39 |
|
|
|
40 |
|
|
|
41 |
The __getservbyport()__ function returns a ''servent'' |
|
|
42 |
structure for the line that matches the port ''port'' |
|
|
43 |
given in network byte order using protocol ''proto''. If |
|
|
44 |
''proto'' is NULL, any protocol will be |
|
|
45 |
matched. |
|
|
46 |
|
|
|
47 |
|
|
|
48 |
The __setservent()__ function opens and rewinds the |
|
|
49 |
''/etc/services'' file. If ''stayopen'' is true (1), |
|
|
50 |
then the file will not be closed between calls to |
|
|
51 |
__getservbyname()__ and |
|
|
52 |
__getservbyport()__. |
|
|
53 |
|
|
|
54 |
|
|
|
55 |
The __endservent()__ function closes |
|
|
56 |
''/etc/services''. |
|
|
57 |
|
|
|
58 |
|
|
|
59 |
The ''servent'' structure is defined in |
|
|
60 |
'''' as follows: |
|
|
61 |
|
|
|
62 |
|
|
|
63 |
struct servent { |
|
|
64 |
char *s_name; /* official service name */ |
|
|
65 |
char **s_aliases; /* alias list */ |
|
|
66 |
int s_port; /* port number */ |
|
|
67 |
char *s_proto; /* protocol to use */ |
|
|
68 |
} |
|
|
69 |
|
|
|
70 |
|
|
|
71 |
The members of the ''servent'' structure |
|
|
72 |
are: |
|
|
73 |
|
|
|
74 |
|
|
|
75 |
''s_name'' |
|
|
76 |
|
|
|
77 |
|
|
|
78 |
The official name of the service. |
|
|
79 |
|
|
|
80 |
|
|
|
81 |
''s_aliases'' |
|
|
82 |
|
|
|
83 |
|
|
|
84 |
A zero terminated list of alternative names for the |
|
|
85 |
service. |
|
|
86 |
|
|
|
87 |
|
|
|
88 |
''s_port'' |
|
|
89 |
|
|
|
90 |
|
|
|
91 |
The port number for the service given in network byte |
|
|
92 |
order. |
|
|
93 |
|
|
|
94 |
|
|
|
95 |
''s_proto'' |
|
|
96 |
|
|
|
97 |
|
|
|
98 |
The name of the protocol to use with this |
|
|
99 |
service. |
|
|
100 |
!!RETURN VALUE |
|
|
101 |
|
|
|
102 |
|
|
|
103 |
The __getservent()__, __getservbyname()__ and |
|
|
104 |
__getservbyport()__ functions return the ''servent'' |
|
|
105 |
structure, or a NULL pointer if an error occurs or the end |
|
|
106 |
of the file is reached. |
|
|
107 |
!!FILES |
|
|
108 |
|
|
|
109 |
|
|
|
110 |
''/etc/services'' |
|
|
111 |
|
|
|
112 |
|
|
|
113 |
services database file |
|
|
114 |
!!CONFORMING TO |
|
|
115 |
|
|
|
116 |
|
|
|
117 |
BSD 4.3 |
|
|
118 |
!!SEE ALSO |
|
|
119 |
|
|
|
120 |
|
|
|
121 |
getprotoent(3), getnetent(3), |
|
|
122 |
services(5) |
|
|
123 |
---- |