NAME

       dlog.h -

       Contains a robust API for logging messages.

SYNOPSIS

       #include <syslog.h>
       #include <stdarg.h>

   Macros
       #define DAEMON_GCC_PRINTF_ATTR(a, b)
           A macro for making use of GCCs printf compilation warnings.
       #define DAEMON_LOGV_AVAILABLE   1
           This variable is defined to 1 iff daemon_logv() is supported.
       #define DAEMON_SET_VERBOSITY_AVAILABLE   1
           This variable is defined to 1 iff daemon_set_verbosity() is available.

   Enumerations
       enum daemon_log_flags { DAEMON_LOG_SYSLOG = 1, DAEMON_LOG_STDERR = 2, DAEMON_LOG_STDOUT =
           4, DAEMON_LOG_AUTO = 8 }
           Specifies where to send the log messages to.

   Functions
       void daemon_log (int prio, const char *t,...) DAEMON_GCC_PRINTF_ATTR(2
           Log a message using printf format strings using the specified syslog priority.
       void daemon_logv (int prio, const char *t, va_list ap)
           Same as daemon_log(), but without variadic arguments.
       char * daemon_ident_from_argv0 (char *argv0)
           Return a sensible syslog identification for daemon_log_ident generated from argv[0].
       void daemon_set_verbosity (int verbosity_prio)
           Setter for the verbosity level of standard output.

   Variables
       enum daemon_log_flags daemon_log_use
           This variable is used to specify the log target(s) to use.
       const char * daemon_log_ident
           Specifies the syslog identification, use daemon_ident_from_argv0() to set this to a
           sensible value or generate your own.

Detailed Description

       Contains a robust API for logging messages.

       Definition in file dlog.h.

Macro Definition Documentation

   #define DAEMON_GCC_PRINTF_ATTR(a, b)
       A macro for making use of GCCs printf compilation warnings.

       Definition at line 59 of file dlog.h.

   #define DAEMON_LOGV_AVAILABLE   1
       This variable is defined to 1 iff daemon_logv() is supported.

       Since:
           0.11

       See Also:
           daemon_logv()

       Definition at line 72 of file dlog.h.

   #define DAEMON_SET_VERBOSITY_AVAILABLE   1
       This variable is defined to 1 iff daemon_set_verbosity() is available.

       Since:
           0.14

       See Also:
           daemon_set_verbosity()

       Definition at line 92 of file dlog.h.

Enumeration Type Documentation

   enum daemon_log_flags
       Specifies where to send the log messages to. The global variable daemon_log_use takes
       values of this type.

       Enumerator

       DAEMON_LOG_SYSLOG
              Log messages are written to syslog.

       DAEMON_LOG_STDERR
              Log messages are written to STDERR.

       DAEMON_LOG_STDOUT
              Log messages are written to STDOUT.

       DAEMON_LOG_AUTO
              If this is set a daemon_fork() will change this to DAEMON_LOG_SYSLOG in the daemon
              process.

       Definition at line 38 of file dlog.h.

Function Documentation

   char* daemon_ident_from_argv0 (char *argv0)
       Return a sensible syslog identification for daemon_log_ident generated from argv[0]. This
       will return a pointer to the file name of argv[0], i.e. strrchr(argv[0], '\')+1

       Parameters:
           argv0 argv[0] as passed to main()

       Returns:
           The identification string

       Examples:
           testd.c.

   void daemon_log (intprio, const char *t, ...)
       Log a message using printf format strings using the specified syslog priority.

       Parameters:
           prio The syslog priority (PRIO_xxx constants)
           t,... The text message to log

       Examples:
           testd.c.

   void daemon_logv (intprio, const char *t, va_listap)
       Same as daemon_log(), but without variadic arguments.

       Since:
           0.11

       See Also:
           DAEMON_LOGV_AVAILABLE

   void daemon_set_verbosity (intverbosity_prio)
       Setter for the verbosity level of standard output.

       Parameters:
           verbosity_prio Minimum priority level for messages to output on standard output/error

       Allows to decide which messages to output on standard output/error streams. All messages
       are logged to syslog and this setting does not influence that.

       The default value is LOG_WARNING.

       Since:
           0.14

       See Also:
           DAEMON_SET_VERBOSITY_AVAILABLE

Variable Documentation

   const char* daemon_log_ident
       Specifies the syslog identification, use daemon_ident_from_argv0() to set this to a
       sensible value or generate your own.

       Examples:
           testd.c.

   enum daemon_log_flags daemon_log_use
       This variable is used to specify the log target(s) to use. Defaults to
       DAEMON_LOG_STDERR|DAEMON_LOG_AUTO

Author

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