socket abstraction: slirp_os_socket

Use a typedef to abstract socket identifiers because Windows just has to
be different (SOCKET type.) Moreover, SOCKET on Win64 is 64-bits and
generates copious type slicing warnings.

Other related changes:

- Explicitly cast curtime's assignment to unsigned int to tamp down on
  type slicing warning.

- Ensure that errno.h is always included. Important for Windows, which
  would otherwise #define errno as WSAGetLastError(); errno.h #define-s
  errno as a function, i.e., "*errno()".

- Export slirp_inet_aton() utility function for Win32/64.

- tcpx_listen()
  - WSASetLastError() unnecessary.
  - Use have_valid_socket() to check socket in error cleanup code
    (vs. "s >= 0").
16 files changed
tree: aaea4bf5c09fd87901712517113ff624f4cc44f4
  1. build-aux/
  2. fuzzing/
  3. src/
  4. test/
  5. .clang-format
  6. .gitignore
  7. .gitlab-ci.yml
  8. .gitpublish
  9. CHANGELOG.md
  10. COPYRIGHT
  11. meson.build
  12. meson_options.txt
  13. README.md
README.md

libslirp

libslirp is a user-mode networking library used by virtual machines, containers or various tools.

Getting Started

Prerequisites

A C compiler, meson and glib2 development libraries.

(see also .gitlab-ci.yml DEPS variable for the list of dependencies on Fedora)

Building

You may build and install the shared library with meson:

meson build
ninja -C build install

And configure QEMU with --enable-slirp=system to link against it.

(QEMU may build with the submodule static library using --enable-slirp=git)

Testing

Unfortunately, there are no automated tests available.

You may run QEMU -net user linked with your development version.

Contributing

Feel free to open issues on the project issues page.

You may clone the gitlab project and create a merge request.

Contributing with gitlab allows gitlab workflow, tracking issues, running CI etc.

Alternatively, you may send patches to slirp@lists.freedesktop.org mailing list.

Versioning

We intend to use libtool's versioning for the shared libraries and use SemVer for project versions.

For the versions available, see the tags on this repository.

License

See the COPYRIGHT file for details.