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1 perry 1 SYSLOG
2 !!!SYSLOG
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 PARAMETERS
7 HISTORY
8 SEE ALSO
9 ----
10 !!NAME
11
12
13 closelog, openlog, syslog - send messages to the system logger
14 !!SYNOPSIS
15
16
17 __#include __
18
19
20 __void openlog( char__ ''*ident''__, int__
21 ''option''__, int__
22 ''facility''__)__
23
24
25 __void syslog( int__ ''priority''__, char__
26 ''*format''__, ...)__
27
28
29 __void closelog( void )__
30 !!DESCRIPTION
31
32
33 __closelog()__ closes the descriptor being used to write
34 to the system logger. The use of __closelog()__ is
35 optional.
36
37
38 __openlog()__ opens a connection to the system logger for
39 a program. The string pointed to by ''ident'' is added to
40 each message, and is typically set to the program name.
41 Values for ''option'' and ''facility'' are given in
42 the next section. The use of __openlog()__ is optional;
43 It will automatically be called by __syslog()__ if
44 necessary, in which case ''ident'' will default to
45 NULL.
46
47
48 __syslog()__ generates a log message, which will be
49 distributed by syslogd(8). ''priority'' is a
50 combination of the ''facility'' and the ''level'',
51 values for which are given in the next section. The
52 remaining arguments are a ''format'', as in
53 printf(3) and any arguments required by the
54 ''format'', except that the two character %m will be
55 replaced by the error message string (''strerror'')
56 corresponding to the present value of
57 ''errno''.
58 !!PARAMETERS
59
60
61 This section lists the parameters used to set the values of
62 ''option'', ''facility'', and
63 ''priority''.
64
65
66 __option__
67
68
69 The ''option'' argument to __openlog()__ is an OR of
70 any of these:
71
72
73 __LOG_CONS__
74
75
76 write directly to system console if there is an error while
77 sending to system logger
78
79
80 __LOG_NDELAY__
81
82
83 open the connection immediately (normally, the connection is
84 opened when the first message is logged)
85
86
87 __LOG_PERROR__
88
89
90 print to stderr as well
91
92
93 __LOG_PID__
94
95
96 include PID with each message
97
98
99 __facility__
100
101
102 The ''facility'' argument is used to specify what type of
103 program is logging the message. This lets the configuration
104 file specify that messages from different facilities will be
105 handled differently.
106
107
108 __LOG_AUTH__
109
110
111 security/authorization messages (DEPRECATED Use
112 __LOG_AUTHPRIV__ instead)
113
114
115 __LOG_AUTHPRIV__
116
117
118 security/authorization messages (private)
119
120
121 __LOG_CRON__
122
123
124 clock daemon (__cron__ and __at__)
125
126
127 __LOG_DAEMON__
128
129
130 system daemons without separate facility value
131
132
133 __LOG_FTP__
134
135
136 ftp daemon
137
138
139 __LOG_KERN__
140
141
142 kernel messages
143
144
145 __LOG_LOCAL0__ through __LOG_LOCAL7__
146
147
148 reserved for local use
149
150
151 __LOG_LPR__
152
153
154 line printer subsystem
155
156
157 __LOG_MAIL__
158
159
160 mail subsystem
161
162
163 __LOG_NEWS__
164
165
166 USENET news subsystem
167
168
169 __LOG_SYSLOG__
170
171
172 messages generated internally by __syslogd__
173
174
175 __LOG_USER__(default)
176
177
178 generic user-level messages
179
180
181 __LOG_UUCP__
182
183
184 UUCP subsystem
185
186
187 __level__
188
189
190 This determines the importance of the message. The levels
191 are, in order of decreasing importance:
192
193
194 __LOG_EMERG__
195
196
197 system is unusable
198
199
200 __LOG_ALERT__
201
202
203 action must be taken immediately
204
205
206 __LOG_CRIT__
207
208
209 critical conditions
210
211
212 __LOG_ERR__
213
214
215 error conditions
216
217
218 __LOG_WARNING__
219
220
221 warning conditions
222
223
224 __LOG_NOTICE__
225
226
227 normal, but significant, condition
228
229
230 __LOG_INFO__
231
232
233 informational message
234
235
236 __LOG_DEBUG__
237
238
239 debug-level message
240 !!HISTORY
241
242
243 A __syslog__ function call appeared in BSD
244 4.2.
245 !!SEE ALSO
246
247
2 perry 248 logger(1), syslog.conf(5),
1 perry 249 syslogd(8)
250 ----
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