Syslog Interface

The external syslog interface allows a vendor-specific syslog send function to be used instead of the Linux system syslog daemon. The yp_library user library code can be used to initialize an external syslog send function.

The external syslog send function must follow the C function templates defined in ncx/log_vendor_extern.h:

  • logfn_vendor_init1_t: Phase 1 initialization function

  • logfn_vendor_send_t: syslog send function

  • logfn_vendor_cleanup_t: Termination cleanup function

The 'example-system C and H files in the yp-system directory contains example usage of these callback functions.

When the vendor callback is invoked, the vendor code should translate the YumaPro application parameters into an "application" and/or "facility" equivalent appropriate to the vendor logging schema. Likewise, it should translate the YumaPro level parameters into a "message type/level" appropriate to its own requirements.

The following H files need to be included to use the functions in this section:

#include "log.h"
#include "log_vendor.h"
#include "log_vendor_extern.h"


This is the Logging Send function, called by the server when a SYSLOG message needs to be sent.

typedef void (*logfn_vendor_send_t)(log_debug_app_t app, log_debug_t level, const char *fstr, va_list args)

Vendor Logging Send Callback.

Param app

YumaPro application (such as netconfd-pro or yangcli-pro) This info is already known to syslog via the connect.

Param level

YumaPro log message level. This will be translated appropriately into a syslog equivalent

Param fstr

start ptr to format string

Param args


The following log send function can be found in example-system.c:

static void
    log_vendor_send_fn (log_debug_app_t app,
                        log_debug_t level,
                        const char *fstr,
                        va_list args)