Add support for the `accept4` system call for FreeBSD* & NetBSD*
As outlined in #540.
However since support for this system call seems to be committed, but not yet released in NetBSD & BitRig (is BitRig actually still be developed at all, btw?), I'm not sure whether it wouldn't be a better idea to only add OpenBSD support instead?
What's the official policy on this?
Adds many socket related constants
Started off adding a few constants to help cleaning up some `nix-rust/nix` issues. Went a little.. further.
Adds lots of socket-related constants (`PF_*`, `MSG_*`, `AF_*`, `SO_*`, `SOL_*`, etc.) to linux/bsd flavors.
Added constants to `bsd/frebsdlike/dragonfly` for completeness, though they aren't covered by CI. Did not touch `notbsd/linux/s390x.rs`
Add and fix tests for {i686, aarch64}-linux-android targets
I think that these changes do not breaks compatibility.
There are some types and constants changes to i686 and aarch64, but I see these changes as bug fixes instead of breaking changes. Also the type time64_t was remove from aarch64 because it is not defined in this arch.
Fixes#536
Add cfmakeraw and cfsetspeed
This includes implementations for Android. `cfsetspeed` is basically just a back-to-back call to `cfsetispeed` and `cfsetospeed`, both of which seem to do the same thing here, so I just copied that body as well for `cfsetspeed`. The implementation for `cfmakeraw` was taken from the man pages for `termios(3)`.
- Copy 17 functions definitions from src/unix/mod.rs
to src/unix/bsd/mod.rs src/unix/haiku/mod.rs
src/unix/notbsd/linux/mod.rs and src/unix/solaris/mod.rs
- Add some functions to android that was cfged out
- Remove cf* and tc* functions implementations for android
(they are available with api >= 12, which was release in 2011)
Add ppoll() for all unix platforms
I'm unsure of whether there is support in OS X for this, and I can't find anything online (so I'm betting there isn't), but I'm going to let this run through CI to confirm.
- some tests are failing
- remove readlink, timegm and sig* functions in favor of the
unix/mod.rs definitions
- remove time64_t (it is not defined for aarch64)
- move some definitions to android/b32.rs and create appropriated
definitions in android/b64.rs
I'm unsure of whether there is support in OS X for this, and I can't find
anything online (I'm betting there isn't), but I'm going to let this run
through CI to confirm
add tmpnam and pthread_exit
tmpnam and readdir are trivial IMO.
About the `pthread_create` change: It needs `unsafe` for passing `C` functions to pthread_create (with rust functions the omission of `unsafe` is working of course).
`bindgen` produces this function definition:
```
pub fn pthread_create(arg1: *mut pthread_t,
arg2: *const pthread_attr_t,
arg3: Option<unsafe extern "C" fn(arg1: *mut c_void) -> *mut c_void>,
arg4: *mut c_void) -> c_int;
```
So it would add an additional `Option` around the function. But that would break existing code which uses `libc::pthread_create` and what use is it to call pthread_create without any function pointer, so I left `Option` out.
For reference: I also opened a [stackoverflow question](http://stackoverflow.com/questions/42284562) where the answers were also suggesting adding `unsafe` to the function definition.
