Merge pull request #1068 from cgwalters/install-config-verity-prep

Install config verity prep

Author: cgwalters

.packit.yaml

@@ -51,8 +51,9 @@ jobs:
       # rawhide is basically nil.
       - fedora-rawhide-x86_64
       - fedora-rawhide-aarch64
-      - rhel-9-x86_64
-      - rhel-9-aarch64
+      # Temporarily disabled due to too old Rust...reenable post 9.6
+      # - rhel-9-x86_64
+      # - rhel-9-aarch64
 
   - job: tests
     trigger: pull_request

Cargo.lock

@@ -6,8 +6,6 @@ license = "MIT OR Apache-2.0"
 repository = "https://github.com/containers/bootc"
 readme = "README.md"
 publish = false
-# For now don't bump this above what is currently shipped in RHEL9.
-rust-version = "1.75.0"
 default-run = "bootc"
 
 # See https://github.com/coreos/cargo-vendor-filterer

cli/Cargo.toml

@@ -64,7 +64,11 @@ Provides: ostree-cli(ostree-container)
 
 %prep
 %autosetup -p1 -a1
-%cargo_prep -v vendor
+# Default -v vendor config doesn't support non-crates.io deps (i.e. git)
+cp .cargo/vendor-config.toml .
+%cargo_prep -N
+cat vendor-config.toml >> .cargo/config.toml
+rm vendor-config.toml
 
 %build
 %if 0%{?fedora} || 0%{?rhel} >= 10
@@ -74,6 +78,8 @@ Provides: ostree-cli(ostree-container)
 %endif
 
 %cargo_vendor_manifest
+# https://pagure.io/fedora-rust/rust-packaging/issue/33
+sed -i -e '/https:\/\//d' cargo-vendor.txt
 %cargo_license_summary
 %{cargo_license} > LICENSE.dependencies
 

contrib/packaging/bootc.spec

@@ -12,4 +12,4 @@ name = "ring"
 [sources]
 unknown-registry = "deny"
 unknown-git = "deny"
-allow-git = []
+allow-git = ["https://github.com/containers/composefs-rs"]

deny.toml

@@ -3,7 +3,7 @@ set -xeu
 . /usr/lib/os-release
 case $ID in
   centos|rhel) dnf config-manager --set-enabled crb;;
-  fedora) dnf -y install dnf-utils ;;
+  fedora) dnf -y install dnf-utils 'dnf5-command(builddep)';;
 esac
 dnf -y builddep ./contrib/packaging/bootc.spec
 # Extra dependencies

hack/build.sh

@@ -6,9 +6,9 @@ name = "bootc-lib"
 readme = "README.md"
 repository = "https://github.com/containers/bootc"
 version = "1.1.4"
-# For now don't bump this above what is currently shipped in RHEL9;
-# also keep in sync with the version in cli.
-rust-version = "1.75.0"
+# In general we try to keep this pinned to what's in the latest RHEL9.
+# However right now, we bumped to 1.82 as that's what composefs-rs uses.
+rust-version = "1.82.0"
 
 include = ["/src", "LICENSE-APACHE", "LICENSE-MIT"]
 
@@ -23,6 +23,8 @@ ostree-ext = { path = "../ostree-ext", features = ["bootc"] }
 chrono = { workspace = true, features = ["serde"] }
 clap = { workspace = true, features = ["derive","cargo"] }
 clap_mangen = { workspace = true, optional = true }
+#composefs = "0.2.0"
+composefs = { git = "https://github.com/containers/composefs-rs", rev = "55ae2e9ba72f6afda4887d746e6b98f0a1875ac4" }
 cap-std-ext = { workspace = true, features = ["fs_utf8"] }
 hex = { workspace = true }
 fn-error-context = { workspace = true }

lib/Cargo.toml

@@ -13,6 +13,7 @@ use cap_std_ext::cap_std;
 use cap_std_ext::cap_std::fs::Dir;
 use clap::Parser;
 use clap::ValueEnum;
+use composefs::fsverity;
 use fn_error_context::context;
 use ostree::gio;
 use ostree_container::store::PrepareResult;
@@ -376,6 +377,21 @@ pub(crate) enum SchemaType {
     Progress,
 }
 
+/// Options for consistency checking
+#[derive(Debug, clap::Subcommand, PartialEq, Eq)]
+pub(crate) enum FsverityOpts {
+    /// Measure the fsverity digest of the target file.
+    Measure {
+        /// Path to file
+        path: Utf8PathBuf,
+    },
+    /// Enable fsverity on the target file.
+    Enable {
+        /// Ptah to file
+        path: Utf8PathBuf,
+    },
+}
+
 /// Hidden, internal only options
 #[derive(Debug, clap::Subcommand, PartialEq, Eq)]
 pub(crate) enum InternalsOpts {
@@ -392,6 +408,8 @@ pub(crate) enum InternalsOpts {
         #[clap(long)]
         of: SchemaType,
     },
+    #[clap(subcommand)]
+    Fsverity(FsverityOpts),
     /// Perform cleanup actions
     Cleanup,
     /// Proxy frontend for the `ostree-ext` CLI.
@@ -1113,6 +1131,24 @@ async fn run_from_opt(opt: Opt) -> Result<()> {
                 )
                 .await
             }
+            // We don't depend on fsverity-utils today, so re-expose some helpful CLI tools.
+            InternalsOpts::Fsverity(args) => match args {
+                FsverityOpts::Measure { path } => {
+                    let fd =
+                        std::fs::File::open(&path).with_context(|| format!("Reading {path}"))?;
+                    let digest =
+                        fsverity::measure_verity_digest::<_, fsverity::Sha256HashValue>(&fd)?;
+                    let digest = hex::encode(digest);
+                    println!("{digest}");
+                    Ok(())
+                }
+                FsverityOpts::Enable { path } => {
+                    let fd =
+                        std::fs::File::open(&path).with_context(|| format!("Reading {path}"))?;
+                    fsverity::ioctl::fs_ioc_enable_verity::<_, fsverity::Sha256HashValue>(&fd)?;
+                    Ok(())
+                }
+            },
             InternalsOpts::FixupEtcFstab => crate::deploy::fixup_etc_fstab(&root),
             InternalsOpts::PrintJsonSchema { of } => {
                 let schema = match of {

lib/src/cli.rs

@@ -13,6 +13,7 @@ pub(crate) mod config;
 mod osbuild;
 pub(crate) mod osconfig;
 
+use std::collections::HashMap;
 use std::io::Write;
 use std::os::fd::{AsFd, AsRawFd};
 use std::os::unix::process::CommandExt;
@@ -37,11 +38,11 @@ use chrono::prelude::*;
 use clap::ValueEnum;
 use fn_error_context::context;
 use ostree::gio;
-use ostree_ext::container as ostree_container;
 use ostree_ext::oci_spec;
 use ostree_ext::ostree;
 use ostree_ext::prelude::Cast;
 use ostree_ext::sysroot::SysrootLock;
+use ostree_ext::{container as ostree_container, ostree_prepareroot};
 #[cfg(feature = "install-to-disk")]
 use rustix::fs::FileTypeExt;
 use rustix::fs::MetadataExt as _;
@@ -349,6 +350,8 @@ pub(crate) struct State {
     #[allow(dead_code)]
     pub(crate) config_opts: InstallConfigOpts,
     pub(crate) target_imgref: ostree_container::OstreeImageReference,
+    #[allow(dead_code)]
+    pub(crate) prepareroot_config: HashMap<String, String>,
     pub(crate) install_config: Option<config::InstallConfiguration>,
     /// The parsed contents of the authorized_keys (not the file path)
     pub(crate) root_ssh_authorized_keys: Option<String>,
@@ -1267,6 +1270,20 @@ async fn prepare_install(
         tracing::debug!("No install configuration found");
     }
 
+    // Convert the keyfile to a hashmap because GKeyFile isnt Send for probably bad reasons.
+    let prepareroot_config = {
+        let kf = ostree_prepareroot::require_config_from_root(&rootfs)?;
+        let mut r = HashMap::new();
+        for grp in kf.groups() {
+            for key in kf.keys(&grp)? {
+                let key = key.as_str();
+                let value = kf.value(&grp, key)?;
+                r.insert(format!("{grp}.{key}"), value.to_string());
+            }
+        }
+        r
+    };
+
     // Eagerly read the file now to ensure we error out early if e.g. it doesn't exist,
     // instead of much later after we're 80% of the way through an install.
     let root_ssh_authorized_keys = config_opts
@@ -1284,6 +1301,7 @@ async fn prepare_install(
         config_opts,
         target_imgref,
         install_config,
+        prepareroot_config,
         root_ssh_authorized_keys,
         container_root: rootfs,
         tempdir,

lib/src/install.rs

@@ -6,14 +6,15 @@ use std::collections::BTreeSet;
 use std::env::consts::ARCH;
 use std::os::unix::ffi::OsStrExt;
 
-use anyhow::{Context, Result};
+use anyhow::Result;
 use camino::{Utf8Path, Utf8PathBuf};
 use cap_std::fs::Dir;
 use cap_std_ext::cap_std;
 use cap_std_ext::cap_std::fs::MetadataExt;
 use cap_std_ext::dirext::CapStdExtDirExt as _;
 use fn_error_context::context;
 use indoc::indoc;
+use ostree_ext::ostree_prepareroot;
 use serde::Serialize;
 
 /// Reference to embedded default baseimage content that should exist.
@@ -286,15 +287,8 @@ fn check_baseimage_root_norecurse(dir: &Dir) -> LintResult {
         return lint_err("Expected /ostree -> {expected}, not {link:?}");
     }
 
-    // Check the prepare-root config
-    let prepareroot_path = "usr/lib/ostree/prepare-root.conf";
-    let config_data = dir
-        .read_to_string(prepareroot_path)
-        .context(prepareroot_path)?;
-    let config = ostree_ext::glib::KeyFile::new();
-    config.load_from_data(&config_data, ostree_ext::glib::KeyFileFlags::empty())?;
-
-    if !ostree_ext::ostree_prepareroot::overlayfs_enabled_in_config(&config)? {
+    let config = ostree_prepareroot::require_config_from_root(dir)?;
+    if !ostree_prepareroot::overlayfs_enabled_in_config(&config)? {
         return lint_err("{prepareroot_path} does not have composefs enabled");
     }