MMAP: mmap the pipe fd to memory gives a Permission Denied result

[cocobean]

• The mmap( ) function shall fail if:
  • [ENODEV] The fildes argument refers to a file whose type is not supported by mmap( ). *
  • Test Step:
  • 1. Create pipe;
  • 2. mmap the pipe fd to memory, should get ENODEV;

• Expected Result: ENODEF
• Result: Permmission denied
• Tested on Haiku R1B2 x86 (+123)

Ref: ​https://github.com/haiku/open_posix_testsuite/blob/from_haiku_trunk/conformance/interfaces/mmap/23-1.c