[fxfs] Add read locks

This adds support for read locks which are necessary in some cases, the
primary example being that of a write to an object involving a size
change, where the size change should be observable with the data that
was written to cause the size change, or not at all.

Change-Id: I2eaefb743f5051a93a0b52e0237340296a81abf4
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/514221
Commit-Queue: Chris Suter <csuter@google.com>
Reviewed-by: James Sullivan <jfsulliv@google.com>
7 files changed
tree: cf707b9505e4b548def68f274a61da379062069c
  1. .clang-format
  2. .clang-tidy
  3. .git-blame-ignore-revs
  4. .gitattributes
  5. .gitignore
  6. .gn
  7. .style.yapf
  8. AUTHORS
  9. BUILD.gn
  10. CODE_OF_CONDUCT.md
  11. CONTRIBUTING.md
  12. LICENSE
  13. OWNERS
  14. PATENTS
  15. README.md
  16. boards/
  17. build/
  18. buildtools/
  19. bundles/
  20. docs/
  21. examples/
  22. garnet/
  23. products/
  24. rustfmt.toml
  25. scripts/
  26. sdk/
  27. src/
  28. third_party/
  29. tools/
  30. zircon/
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

Read more about Fuchsia's principles.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See fuchsia.dev.