source: bootcd/isolinux/syslinux-6.03/core/fs/lib/loadconfig.c

#include <dprintf.h>
#include <stdio.h>
#include <string.h>
#include <core.h>
#include <fs.h>

/*
 * Standard version of load_config for extlinux/syslinux filesystems.
 *
 * This searches for extlinux.conf and syslinux.cfg in the install
 * directory, followed by a set of fallback directories.  If found,
 * set the current working directory to match.
 */
int generic_open_config(struct com32_filedata *filedata)
{
    static const char *search_directories[] = {
        NULL,                   /* CurrentDirName */
        "/boot/syslinux",
        "/syslinux",
        "/",
        NULL
    };
    static const char *filenames[] = {
        "extlinux.conf",
        "syslinux.cfg",
        NULL
    };

    search_directories[0] = CurrentDirName;

    dprintf("CurrentDirName: \"%s\"\n", CurrentDirName);

    return search_dirs(filedata, search_directories, filenames, ConfigName);
}