HH\Lib\OS\fcntl

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This is available as OS\fcntl in the www repository.

Control operations for file descriptors

namespace HH\Lib\OS;

function fcntl(
  FileDescriptor $fd,
  FcntlOp $cmd,
  ?int $arg = NULL,
): mixed;

See man 2 fcntl for details. On error, an ErrnoException will be thrown.

Parameters