Add a method for determining which MESA_MAP_ACCESS_* flag would be
appropriate for a given OwnedDescriptor, based on both access flags and
write seals (since access mode can be RDWR despite the seals!)
This is useful for virtgpu implementations when mapping incoming buffers
from host software into the guest's address space. Previously Rutabaga
relied on basic heuristics like "SHM is always R/O", but with upcoming
extra protocols to be forwarded over virtgpu channels (like PipeWire)
those assumptions no longer hold true.
Signed-off-by: Val Packett <val@packett.cool>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40132>
This enhances the DescriptorType enum to include the
memory handle type (DMABUF vs SHM) alongside the size,
allowing consumers to differentiate between DMA-BUF and
shared memory file descriptors without redundant code.
Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38677>
A transitive dependency is a dependency of a dependency.
So if, for example, mesa3d_util does explicitly use
zerocopy-derive, it should not need to a depend on it.
The package that pulls in transitive should already
include it has a dependency. This provides clearer
methodologies in maintaining Rust code, similiar to
how Cargo.toml handles it.
Reviewed-by: David Gilhooley <djgilhooley.gmail.com>
Fixes some warnings.
21 | pub fn new(data: &[u8]) -> Reader {
| ^^^^^ ------ the same lifetime is hidden here
| |
| the lifetime is elided here
|
= help: the same lifetime is referred to in inconsistent ways, making the signature confusing
= note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
help: use `'_` for type paths
|
21 | pub fn new(data: &[u8]) -> Reader<'_> {
| ++++
Reviewed-by: David Gilhooley <djgilhooley.gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37097>
Use the convention for Rust subprojects that was adopted by Meson 1.5.0
and newer.
Distros would prefer to avoid vendored crate sources, and instead use
local sources from e.g. /usr/share/cargo/registry. While Meson does not
support a local registry, it can be emulated with MESON_PACKAGE_CACHE_DIR.
However, because the distro might not be using the exact version of the
package, but only one that has the same semver, packagers need to add
some hacks to rewrite the wrap files. For example, in Fedora:
export MESON_PACKAGE_CACHE_DIR="%{cargo_registry}/"
# So... Meson can't actually find them without tweaks
%define inst_crate_nameversion() %(basename %{cargo_registry}/%{1}-*)
%define rewrite_wrap_file() sed -e "/source.*/d" -e "s/%{1}-.*/%{inst_crate_nameversion %{1}}/" -i subprojects/%{1}.wrap
%rewrite_wrap_file proc-macro2
%rewrite_wrap_file quote
%rewrite_wrap_file syn
%rewrite_wrap_file unicode-ident
%rewrite_wrap_file paste
Having a common convention for the name of Rust wraps makes it possible
to perform this transformation with a script without listing
the wraps one by one, and to share the script across multiple packages
(which will be useful when QEMU starts using Rust in a similar way to Mesa).
For an example of such a script, see
https://lore.kernel.org/r/20250722083507.678542-1-pbonzini@redhat.com/.
Acked-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36284>
This is because Android prefers it -- the project likes to make
changes to bionic that have a global effect, and using raw-syscalls
potentially complicates that. This is a backport of:
https://github.com/bytecodealliance/rustix/pull/1478
In addition, nothing in Mesa3D needs the added functionality provided
by raw syscalls.
Test:
meson setup gfxstream-build -Dvulkan-drivers="gfxstream" -Dgallium-drivers="" -Dvirtgpu_kumquat=true -Dopengl=false -Drust_std=2021
still compiles.
Reviewed-by: @LingMan
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36116>
Latest tagged release. Fedora uses it, and for it to
work on Android we'll need to latest release so a pure
libc backend can be used.
Reviewed-by: Marcin Radomski <dextero@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35768>
This is intended to a Rust analog to "src/util", which has
many utilities used by Mesa developers. This is mostly
a copy of ${crosvm} rutabaga_gfx/src/rutabaga_os (which will
be deleted in favor of this crate).
Key constructs include:
- SharedMemory
- MemoryMapping
- Tube (sockets, essentially)
- OwnedDescriptor (HANDLE or fd-based)
- WaitContext (epoll, ..)
As one would expect, Linux implementations are the most complete.
Acked-by: Aaron Ruby <aruby@qnx.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35210>
