Return true if NAME designates a loopback network interface.

Set the name of the calling thread to NAME. NAME is truncated to 15 bytes.

Return the best approximation of the number of rows of the terminal at PORT, trying to guess a reasonable value if all else fails. The result is always a positive integer.

Return the mount flags of MOUNT, a <mount> record, as an inclusive or of MS_* constants.

Add N to the kernel's entropy count (the value that can be read from /proc/sys/kernel/random/entropy_avail). PORT-OR-FD must correspond to /dev/urandom or /dev/random. Raise to 'system-error with EPERM when the caller lacks root privileges.

This is a raw clone syscall wrapper that ensures no Guile thread will be spawned during execution of the child. `clone' is called with FLAGS. CHILD is a thunk to run in the child process. PARENT is procedure that accepts the child PID as argument. This is useful in many contexts, such as when calling `unshare' or async-unsafe procedures in the child when the parent process memory (CLONE_VM) or threads (CLONE_THREAD) are shared with it.

Set the CHILD_SUBREAPER capability for the current process.

Return an open file descriptor to the user namespace that owns the namespace pointed to by FDES, a file descriptor obtained by opening /proc/PID/ns/*.

Unlock PORT, a port returned by 'lock-file', and close it.

Delete the network route for DESTINATION. For instance, the call:

(delete-network-route sock (make-socket-address AF_INET INADDR_ANY 0))

is equivalent to the 'net-tools' command:

route del -net default