essat's flag not to follow symlinks isn't in the system call, and if libc is supposed to implement this as a wrapper uClibc gets it wrong. So use the stat info about symlinks instead. (Doesn't check the parent directory, but if that's read only we can't delete the file anyway so prompting is moot.)

// Included after toys.h, for network stuff.  Some build environments
// don't include network support, so we shouldn't include it unless we're
// going to build it.

#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <poll.h>