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   bpf    ( 2 )

выполнить команду на расширенной карте или программе BPF (perform a command on an extended BPF map or program)
  Name  |  Synopsis  |  Description  |    Return value    |  Error  |  Versions  |  Conforming to  |  Note  |  Examples  |  See also  |

Возвращаемое значение (Return value)

For a successful call, the return value depends on the operation:


       BPF_MAP_CREATE
              The new file descriptor associated with the eBPF map.


       BPF_PROG_LOAD
              The new file descriptor associated with the eBPF program.


       All other commands
              Zero.


       On error, -1 is returned, and errno is set to indicate the error.