#include <sys/types.h>
#include <sys/xattr.h>

void main(int argc, char** argv)
{
    const char* path=argv[1];
    ssize_t result, newresult;
    char* list;
    char* value;
    int i;

    list = malloc(128);
    result = listxattr(path, list, 128);
    printf("listxattr returned %d.\n", result); 
    printf("Name of extended attribute is %s.\n", list);
    free(list);
    
    // find out size of attribute data
    value = malloc(32);
    result = getxattr(path, "netware.metadata", value, 0);
    printf("Size of attribute data is %d.\n", result);
    free(value);
    value = malloc(result);
    newresult = getxattr(path, "netware.metadata", value, result);
    printf("getxattr returned %d bytes:\n", newresult);
    for (i = 0; i < result; i++)
        printf("%08x ", *(value + i));
    free(value);
}