LC_GETERRNO(3)

NAME
lc_geterrno - Retrieve a numeric error code.

SYNOPSIS
#include <libconfig.h>

lc_err_t lc_geterrno(void);

DESCRIPTION
The lc_geterrno(3) function returns the last numeric error code set as an lc_err_t which is an enumerated type and can be cast to any integer type. The lc_err_t type specifies the following defined values:

LC_ERR_NONE
    No error was found. Success.

LC_ERR_INVCMD
    A command was specified for which there was no handler.

LC_ERR_INVSECTION
    A section was specified for which there was no handler.

LC_ERR_INVDATA
    A value that does not make sense was specified, such as a non-existant type to the lc_process_file(3) function.

LC_ERR_BADFORMAT
    An invalid format was detected, such as no argument where on was expected, or a value passed to a boolean-specified variable whose value was not one of: enable, true, yes, on, y, 1, disable, false, off, no, n, 0.

LC_ERR_CANTOPEN
    Unable to open a specified file.

LC_ERR_CALLBACK
    A callback function returned an error (LC_CBRET_ERROR).

LC_ERR_ENOMEM
    Memory could not be allocated for internal structures.

EXAMPLE
#include <libconfig.h>
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char **argv) {
	int lc_p_ret, lc_rv_ret;
	char *filename = NULL;
	lc_rv_ret = lc_register_var("File", LC_VAR_STRING,
	                            &filename, 'f');
	if (lc_rv_ret != 0) {
		fprintf(stderr, "Error registering variable: %i.\n",
		        lc_geterrno());
		return(EXIT_FAILURE);
	}
	lc_p_ret = lc_process(argc, argv, "example", LC_CONF_APACHE,
	                      NULL);
	lc_cleanup();
	if (lc_p_ret != 0) {
		fprintf(stderr, "Error processing configuration: \
		        %s\n", lc_geterrstr());
		return(EXIT_FAILURE);
	}
	if (filename != NULL) {
		printf("File specified was: %s\n", filename);
	} else {
		printf("No filename specified.\n");
	}
	return(EXIT_SUCCESS);
}

SEE ALSO
libconfig(3), lc_register_var(3), lc_register_callback(3), lc_geterrstr(3), lc_seterrstr(3), lc_handle_type(3), lc_process(3), lc_process_file(3), lc_cleanup(3)