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Signed-off-by: Alex Saveau <saveau.alexandre@gmail.com>
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1902: Enable ucontext module on aarch64-unknown-linux-gnu r=asomers a=rtzoeller
Untested, but I saw https://github.com/rust-lang/libc/commit/fd32da6e7dfa2afcae86e176904244cf45a90c06 and figured we should uptake it.
Co-authored-by: Ryan Zoeller <rtzoeller@rtzoeller.com>
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Signed-off-by: Alex Saveau <saveau.alexandre@gmail.com>
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When reading a value into an enum from getsockopt, we must validate it.
Failing to do so can lead to UB for example with SOCK_PACKET on Linux.
Perform the validation in GetSockOpt::get. Currently SockType is the
only type that requires validation.
Fixes #1819
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1788: Workaround XNU bug in getifaddrs netmasks r=asomers a=roblabla
Fixes #1709
Co-authored-by: roblabla <unfiltered@roblab.la>
Co-authored-by: Alan Somers <asomers@gmail.com>
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In a future release of the `libc` crate, `libc::timespec` will contain
private padding fields on `*-linux-musl` targets and so the struct will
no longer be able to be created using the literal initialization syntax.
Update places where `libc::timespec` is created to first zero initialize
the value and then update the `tv_sec` and `tv_nsec` fields manually.
Many of these places are in `const fn`s so a helper function
`zero_init_timespec()` is introduced to help with this as
`std::mem::MaybeUninit::zeroed()` is not a `const` function.
Some matches on `libc::timespec` are also updated to include a trailing
`..` pattern which works when `libc::timespec` has additional, private
fields as well as when it does not (like for
`x86_64-unknown-linux-gnu`).
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1865: Add IpMtu sockopt r=asomers a=ShadowJonathan
Resolves https://github.com/nix-rust/nix/issues/1864
Co-authored-by: Jonathan de Jong <jonathandejong02@gmail.com>
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1848: SockProtocol::Raw = libc::IPPROTO_RAW for raw sockets r=asomers a=StackOverflowExcept1on
Hey, I wanna to make call like `socket(af_type, SOCK_RAW, IPPROTO_RAW)` but currently there is no way to do it with rust
https://github.com/rickettm/SendIP/blob/aad12a001157489ab9053c8665e09aec24a2ff6d/sendip.c#L143
Update: Feel free to add `#[cfg]` attribute if I made mistakes that might cause errors on some platforms
Co-authored-by: StackOverflowExcept1on <109800286+StackOverflowExcept1on@users.noreply.github.com>
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Use it in the from_sockaddr_un_abstract_unnamed test. That test and
this method were introduced by PRs #1871 and #1857, which crossed each
other.
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1857: Add better support for unnamed unix socket addrs r=asomers a=stevenengler
This adds the following 2 functions/methods: `UnixAddr::new_unnamed` and `UnixAddr::is_unnamed`.
Closes #1585
unix(7) on Linux:
> unnamed: A stream socket that has not been bound to a pathname using bind(2) has no name. Likewise, the two sockets created by socketpair(2) are unnamed. When the address of an unnamed socket is returned, its length is `sizeof(sa_family_t)`, and `sun_path` should not be inspected.
**Edit:** This currently isn't working on BSD, but I see why. Will fix it shortly.
Co-authored-by: Steven Engler <opara@cs.georgetown.edu>
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1871: Fix using SockaddrStorage to store Unix domain addresses on Linux r=rtzoeller a=asomers
Since it has variable length, the user of a sockaddr_un must keep track of its true length. On the BSDs, this is handled by the builtin sun_len field. But on Linux-like operating systems it isn't. Fix this bug by explicitly tracking it for SockaddrStorage just like we already do for UnixAddr.
Fixes #1866
Co-authored-by: Alan Somers <asomers@gmail.com>
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Make Linux-only
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1853: Adds IP_TOS, IPV6_TCLASS and SO_PRIORITY sockopt wrappers for Linux r=asomers a=mzachar
Added socket option wrappers for DiffServ related parameters on Linux
Co-authored-by: mzachar <mzachar@users.noreply.github.com>
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1870: mmap addr r=asomers a=JonathanWoollett-Light
Uses `Some<size_t>` instead of `*mut c_void` for the `addr` passed to [`sys::mman::mmap`](https://docs.rs/nix/latest/nix/sys/mman/fn.mmap.html).
In this instance we are not usefully passing a pointer, it will never be dereferenced. We are passing a location which represents where to attach the shared memory to.
In this case `size_t` better represents an address and not a pointer, and `Option<size_t>` better represents an optional argument than `NULLPTR`.
In C since there is no optional type this is a pointer as this allows it be null which is an alias here for `None`.
Co-authored-by: Jonathan <jonathanwoollettlight@gmail.com>
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1872: Misc internal optimizations r=rtzoeller a=asomers
* Make ipv4addr_to_libc const
* Use mem::transmute in ipv4addr_to_libc and ipv6addr_to_libc
Fixes #1687
Fixes #1688
Co-authored-by: Alan Somers <asomers@gmail.com>
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* Make ipv4addr_to_libc const
* Use mem::transmute in ipv4addr_to_libc and ipv6addr_to_libc
Fixes #1687
Fixes #1688
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Since it has variable length, the user of a sockaddr_un must keep track
of its true length. On the BSDs, this is handled by the builtin sun_len
field. But on Linux-like operating systems it isn't. Fix this bug by
explicitly tracking it for SockaddrStorage just like we already do for
UnixAddr.
Fixes #1866
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Signed-off-by: Alex Saveau <saveau.alexandre@gmail.com>
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Signed-off-by: Alex Saveau <saveau.alexandre@gmail.com>
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It returns the mount flags on the BSDs. On Linux, it returns a slightly
different set of flags.
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And fstatfs64 instead of fstatfs.
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https://github.com/rust-lang/libc/pull/2963
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See https://github.com/nix-rust/nix/pull/1744 for more details
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New implementation performs no allocations after all the necessary
structures are created, removes potentially unsound code that
was used by the old version (see below) and adds a bit more
documentation about bugs in how timeout is actually handled
```
let timeout = if let Some(mut t) = timeout {
t.as_mut() as *mut libc::timespec
} else {
ptr::null_mut()
};
```
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We'll be using that to reinitialize buffers later
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This is already an unsafe function, dealing with pointers directly
does not make it much more unsafe but simplifies lifetimes later on
and similar to a previous commit allows to alocate a single buffer
to store all the control messages
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CMSG_FIRSTHDR/CMSG_NEXTHDR operate in terms of pointers contained
inside msghdr structure, vector capacity doesn't matter for them.
This would change external behavior of recvmsg/recvmmsg in a sense
that buffer passed to store controll messages won't have it's length
updated but intended way to receive control messages is with cmsgs
iterator on `RecvMsg` which would still work.
This change is required to allow using a single vector to store
control messages from multiple packets
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1842: add eaccess on freebsd, dragonfly and linux r=rtzoeller a=SteveLauC
#### man pages
* [FreeBSD](https://www.freebsd.org/cgi/man.cgi?query=eaccess&sektion=2&n=1)
* [DragonFly](https://man.dragonflybsd.org/?command=access§ion=2)
* [Linux](https://man7.org/linux/man-pages/man3/euidaccess.3.html)
#### difference between `eaccess` and `access/faccessat`
IMHO, `eaccess` uses effective identifiers to perform the permission check while `access/faccessat` use real IDs.
Fixes #1373
Co-authored-by: Steve Lau <stevelauc@outlook.com>
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1833: add syncfs on linux r=rtzoeller a=SteveLauC
Fixes #1818
Change has not been added to `CHANGELOG.md`, will add it when #1831 is merged, or there will be a merge conflict
Co-authored-by: Steve Lau <stevelauc@outlook.com>
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Clippy is now smarter about detecting unnecessary casts and
useless conversions, which means we need to be more explicit
about when the conversions are needed for a subset of platforms.
Required changes found by repeatedly running the following command
against a list of the supported platforms.
`xargs -t -I {} sh -c "cargo clippy -Zbuild-std --target {} --all-targets -- -D warnings || exit 255"`
I removed the casts it complained about, and then restored them
with an `#[allow]` if a later target needed the cast.
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