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: See Also: 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: See Also: 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: Returns: Examples:
testd.c.

void daemon_log (intprio, const char *t, ...)¶

Log a message using printf format strings using the specified syslog priority. Parameters: Examples:
testd.c.

void daemon_logv (intprio, const char *t, va_listap)¶

Same as daemon_log(), but without variadic arguments. Since: See Also:

void daemon_set_verbosity (intverbosity_prio)¶

Setter for the verbosity level of standard output. Parameters: 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: See Also:

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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