unix: fix Getdirentries on 32-bit freebsd 12

On freebsd 12, the system call for getdirentries writes 64 bits to
*basep, even on 32-bit systems. Accomodate that by providing a uint64
to the system call and copy the base to/from that uint64.
The uint64 seems to be a virtual file offset, so failing if the high
bits are not zero should be fine for reasonable-sized directories.

Update golang/go#32498

Change-Id: I4451894aff4e353c9f009c06ad2fdd5578dfd9f8
Reviewed-on: https://go-review.googlesource.com/c/sys/+/181500
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
5 files changed
tree: 9507e1bbdddaabc6d818b416e1b27dc4efdab880
  1. cpu/
  2. plan9/
  3. unix/
  4. windows/
  5. .gitattributes
  6. .gitignore
  7. AUTHORS
  8. codereview.cfg
  9. CONTRIBUTING.md
  10. CONTRIBUTORS
  11. go.mod
  12. LICENSE
  13. PATENTS
  14. README.md
README.md

sys

This repository holds supplemental Go packages for low-level interactions with the operating system.

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