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42 .Nm krb5_addlog_dest ,
43 .Nm krb5_addlog_func ,
48 .Nd Heimdal logging functions
50 Kerberos 5 Library (libkrb5, -lkrb5)
54 .Fn "\*(lp*krb5_log_log_func_t\*(rp" "const char *time" "const char *message" "void *data"
56 .Fn "\*(lp*krb5_log_close_func_t\*(rp" "void *data"
58 .Fn krb5_addlog_dest "krb5_context context" "krb5_log_facility *facility" "const char *destination"
60 .Fn krb5_addlog_func "krb5_context context" "krb5_log_facility *facility" "int min" "int max" "krb5_log_log_func_t log" "krb5_log_close_func_t close" "void *data"
62 .Fn krb5_closelog "krb5_context context" "krb5_log_facility *facility"
64 .Fn krb5_initlog "krb5_context context" "const char *program" "krb5_log_facility **facility"
66 .Fn krb5_log "krb5_context context" "krb5_log_facility *facility" "int level" "const char *format" "..."
68 .Fn krb5_log_msg "krb5_context context" "krb5_log_facility *facility" "char **reply" "int level" "const char *format" "..."
70 .Fn krb5_openlog "krb5_context context" "const char *program" "krb5_log_facility **facility"
72 .Fn krb5_vlog "krb5_context context" "krb5_log_facility *facility" "int level" "const char *format" "va_list arglist"
74 .Fn krb5_vlog_msg "krb5_context context" "krb5_log_facility *facility" "char **reply" "int level" "const char *format" "va_list arglist"
76 These functions logs messages to one or more destinations.
80 function creates a logging
82 that is used to log messages. A facility consists of one or more
83 destinations (which can be files or syslog or some other device). The
85 parameter should be the generic name of the program that is doing the
86 logging. This name is used to lookup which destinations to use. This
87 information is contained in the
91 configuration file. If no entry is found for
95 is used, or if that is missing too,
97 will be used as destination.
99 To close a logging facility, use the
103 To log a message to a facility use one of the functions
109 The functions ending in
113 a pointer to the message that just got logged. This string is allocated,
114 and should be freed with
120 style format string (but see the BUGS section).
122 If you want better control of where things gets logged, you can instead of using
126 which just initializes a facility, but doesn't define any actual logging
127 destinations. You can then add destinations with the
131 functions. The first of these takes a string specifying a logging
132 destination, and adds this to the facility. If you want to do some
133 non-standard logging you can use the
135 function, which takes a function to use when logging.
138 function is called for each message with
140 being a string specifying the current time, and
144 is called when the facility is closed. You can pass application specific data in the
150 parameter are the same as in a destination (defined below). To specify a
151 max of infinity, pass -1.
158 for each destination found.
160 The defined destinations (as specified in
163 .Bl -tag -width "xxx" -offset indent
165 This logs to the program's stderr.
166 .It Li FILE: Ns Pa /file
167 .It Li FILE= Ns Pa /file
168 Log to the specified file. The form using a colon appends to the file, the
169 form with an equal truncates the file. The truncating form keeps the file
170 open, while the appending form closes it after each log message (which
171 makes it possible to rotate logs). The truncating form is mainly for
172 compatibility with the MIT libkrb5.
173 .It Li DEVICE= Ns Pa /device
174 This logs to the specified device, at present this is the same as
177 Log to the console, this is the same as
178 .Li DEVICE=/dev/console .
179 .It Li SYSLOG Ns Op :priority Ns Op :facility
180 Send messages to the syslog system, using priority, and facility. To
181 get the name for one of these, you take the name of the macro passed
184 and remove the leading
189 The default values (as well as the values used for unrecognised
196 for a list of priorities and facilities.
199 Each destination may optionally be prepended with a range of logging
206 is within this range (inclusive) the message gets logged to this
207 destination, otherwise not. Either of the min and max valued may be
208 omitted, in this case min is assumed to be zero, and max is assumed to be
209 infinity. If you don't include a dash, both min and max gets set to the
210 specified value. If no range is specified, all messages gets logged.
212 .Bd -literal -offset indent
214 kdc = 0/FILE:/var/log/kdc.log
215 kdc = 1-/SYSLOG:INFO:USER
219 This will log all messages from the
221 program with level 0 to
222 .Pa /var/log/kdc.log ,
223 other messages will be logged to syslog with priority
227 All other programs will log all messages to their stderr.
234 to format the message. If your operating system does not have a working
236 a replacement will be used. At present this replacement does not handle
237 some correct conversion specifications (like floating point numbers). Until
238 this is fixed, the use of these conversions should be avoided.
240 If logging is done to the syslog facility, these functions might not be
241 thread-safe, depending on the implementation of