Rootless Podman with SELinux File Permission Issue

[FlorianLudwig]

Checklist

• I've looked through the issues and pull requests for similar reports

Describe your issue

When using cross on a system with SE Linux enabled,

What target(s) are you cross-compiling for?

No response

Which operating system is the host (e.g computer cross is on) running?

• macOS
• Windows
• Linux / BSD
• other OS (specify in description)

What architecture is the host?

• x86_64 / AMD64
• arm32
• arm64 (including Mac M1)

What container engine is cross using?

• docker
• podman
• other container engine (specify in description)

cross version

cross 0.2.5

Example

Running on fedora 40 with podman and SELinux enabled in a project that contains a local dependency:

[dependencies]
lib_shared = { path = "../lib_shared" }

cross build --release --target x86_64-unknown-linux-gnu

Caused by:
  failed to load source for dependency `lib_shared`

Caused by:
  Unable to update /home/fludwig/projects/test/lib_shared

Caused by:
  failed to read `/home/fludwig/projects/test/lib_shared/Cargo.toml`

Caused by:
  Permission denied (os error 13)

Additional information / notes

Instead of using :z which relabels the files in a mount, using --security-opt label=disable is a much more reliable option in my experience. It also fixes the issue for me in this case.

[Emilgardis]

have you tried installing cross from the current main branch?

cargo install cross --git https://github.com/cross-rs/cross

[FlorianLudwig]

With version cross 0.2.5 (ac4c11c 2024-09-24) I get:

error: failed to run custom build command for `aws-lc-sys v0.20.1`

Caused by:
  process didn't exit successfully: `/target/release/build/aws-lc-sys-18f2c886ba4b2157/build-script-main` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_PREFIX
  cargo:rerun-if-env-changed=AWS_LC_SYS_INTERNAL_BINDGEN
  cargo:rerun-if-env-changed=AWS_LC_SYS_EXTERNAL_BINDGEN
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_ASM
  cargo:rustc-cfg=x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_CMAKE_BUILDER
  cargo:rerun-if-env-changed=AWS_LC_SYS_STATIC
  default_for Target: 'x86_64-unknown-linux-gnu'
  cargo:rerun-if-env-changed=CARGO_FEATURE_SSL
  default_for Target: 'x86_64-unknown-linux-gnu'
  cargo:rerun-if-env-changed=CARGO_FEATURE_SSL
  cargo:root=/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-26d78042895e775b/out
  default_for Target: 'x86_64-unknown-linux-gnu'
  OPT_LEVEL = Some(3)
  TARGET = Some(x86_64-unknown-linux-gnu)
  OUT_DIR = Some(/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-26d78042895e775b/out)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  CC_x86_64-unknown-linux-gnu = None
  cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
  CC_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some(false)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None

  --- stderr
  thread 'main' panicked at /home/fludwig/.cargo/registry/src/index.crates.io-6f17d22bba15001f/aws-lc-sys-0.20.1/builder/cc_builder.rs:244:13:
  Your compiler (cc) is not supported due to a memcmp related bug reported in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189.We strongly recommend against using this compiler.EXECUTED: true ERROR:  OUTPUT:  
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Which is an unrelated issue. I will have dig another day what is wrong there.

[Emilgardis]

that's a known issue, you use aws-lc-sys from their master branch to resolve it for now. aws/aws-lc-rs#520

edit: actually, for x86_64-unknown-linux-gnu that might not work

[merklefruit]

@Emilgardis Hi, I am running into a similar issue to the above.

I am trying to compile a project that depends on aws-lc-sys v0.22.0 like so:

cargo tree | grep aws-lc-sys
│   │   ├── aws-lc-sys v0.22.0

cross build --release --target x86_64-unknown-linux-gnu

The output includes:

  --- stderr
  thread 'main' panicked at /home/shared/.cargo/registry/src/index.crates.io-6f17d22bba15001f/aws-lc-sys-0.22.0/builder/cc_builder.rs:333:13:
  ### COMPILER BUG DETECTED ###
  Your compiler (cc) is not supported due to a memcmp related bug reported in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189. We strongly recommend against using this compiler.
  EXECUTED: true
  ERROR:
  OUTPUT:

Have you found a workaround for x86_64-unknown-linux-gnu by chance? Thanks in advance

EDIT: This comment seems to suggest that one option would be to update gcc: rustls/rustls#1967 (comment)