chore(xen): split platform support into separate crate (#195)

Cargo.lock

@@ -1584,6 +1584,7 @@ dependencies = [
  "krata-xenclient",
  "krata-xenevtchn",
  "krata-xengnt",
+ "krata-xenplatform",
  "krata-xenstore",
  "log",
  "loopdev-3",
@@ -1626,23 +1627,17 @@ name = "krata-xenclient"
 version = "0.0.10"
 dependencies = [
  "async-trait",
- "c2rust-bitfields",
- "elf",
  "env_logger",
- "flate2",
  "indexmap 2.2.6",
  "krata-xencall",
+ "krata-xenplatform",
  "krata-xenstore",
  "libc",
  "log",
- "memchr",
- "nix 0.28.0",
  "regex",
- "slice-copy",
  "thiserror",
  "tokio",
  "uuid",
- "xz2",
 ]
 
 [[package]]
@@ -1665,6 +1660,29 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "krata-xenplatform"
+version = "0.0.10"
+dependencies = [
+ "async-trait",
+ "c2rust-bitfields",
+ "elf",
+ "env_logger",
+ "flate2",
+ "indexmap 2.2.6",
+ "krata-xencall",
+ "libc",
+ "log",
+ "memchr",
+ "nix 0.28.0",
+ "regex",
+ "slice-copy",
+ "thiserror",
+ "tokio",
+ "uuid",
+ "xz2",
+]
+
 [[package]]
 name = "krata-xenstore"
 version = "0.0.10"

Cargo.toml

@@ -12,6 +12,7 @@ members = [
     "crates/xen/xenclient",
     "crates/xen/xenevtchn",
     "crates/xen/xengnt",
+    "crates/xen/xenplatform",
     "crates/xen/xenstore",
 ]
 resolver = "2"
@@ -32,6 +33,7 @@ backhand = "0.15.0"
 base64 = "0.22.1"
 byteorder = "1"
 bytes = "1.5.0"
+c2rust-bitfields = "0.18.0"
 cgroups-rs = "0.3.4"
 circular-buffer = "0.1.7"
 comfy-table = "7.1.1"

crates/ctl/src/cli/mod.rs

@@ -31,10 +31,7 @@ use self::{
 };
 
 #[derive(Parser)]
-#[command(
-    version,
-    about = "Control the krata isolation engine"
-)]
+#[command(version, about = "Control the krata isolation engine")]
 pub struct ControlCommand {
     #[arg(
         short,

crates/runtime/Cargo.toml

@@ -23,6 +23,7 @@ uuid = { workspace = true }
 krata-xenclient = { path = "../xen/xenclient", version = "^0.0.10" }
 krata-xenevtchn = { path = "../xen/xenevtchn", version = "^0.0.10" }
 krata-xengnt = { path = "../xen/xengnt", version = "^0.0.10" }
+krata-xenplatform = { path = "../xen/xenplatform", version = "^0.0.10" }
 krata-xenstore = { path = "../xen/xenstore", version = "^0.0.10" }
 walkdir = { workspace = true }
 

crates/runtime/src/lib.rs

@@ -22,10 +22,10 @@ pub mod ip;
 pub mod launch;
 
 #[cfg(target_arch = "x86_64")]
-type RuntimePlatform = xenclient::x86pv::X86PvPlatform;
+type RuntimePlatform = xenplatform::x86pv::X86PvPlatform;
 
 #[cfg(not(target_arch = "x86_64"))]
-type RuntimePlatform = xenclient::unsupported::UnsupportedPlatform;
+type RuntimePlatform = xenplatform::unsupported::UnsupportedPlatform;
 
 pub struct GuestLoopInfo {
     pub device: String,

crates/xen/xencall/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "krata-xencall"
-description = "An implementation of direct interfacing to xen privcmd for krata."
+description = "An implementation of direct interfacing to Xen privcmd for krata"
 license.workspace = true
 version.workspace = true
 homepage.workspace = true

crates/xen/xenclient/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "krata-xenclient"
-description = "An implementation of Xen userspace for krata."
+description = "An implementation of Xen userspace for krata"
 license.workspace = true
 version.workspace = true
 homepage.workspace = true
@@ -10,22 +10,16 @@ resolver = "2"
 
 [dependencies]
 async-trait = { workspace = true }
-c2rust-bitfields = "0.18.0"
-elf = { workspace = true }
-flate2 = { workspace = true }
 indexmap = { workspace = true }
 libc = { workspace = true }
 log = { workspace = true }
 krata-xencall = { path = "../xencall", version = "^0.0.10" }
+krata-xenplatform = { path = "../xenplatform", version = "^0.0.10" }
 krata-xenstore = { path = "../xenstore", version = "^0.0.10" }
-memchr = { workspace = true }
-nix = { workspace = true }
 regex = { workspace = true }
-slice-copy = { workspace = true }
 thiserror = { workspace = true }
 tokio = { workspace = true }
 uuid = { workspace = true }
-xz2 = { workspace = true }
 
 [dev-dependencies]
 env_logger = { workspace = true }

crates/xen/xenclient/examples/boot.rs

@@ -4,10 +4,10 @@ use xenclient::error::Result;
 use xenclient::{DomainConfig, XenClient};
 
 #[cfg(target_arch = "x86_64")]
-type RuntimePlatform = xenclient::x86pv::X86PvPlatform;
+type RuntimePlatform = xenplatform::x86pv::X86PvPlatform;
 
 #[cfg(not(target_arch = "x86_64"))]
-type RuntimePlatform = xenclient::unsupported::UnsupportedPlatform;
+type RuntimePlatform = xenplatform::unsupported::UnsupportedPlatform;
 
 #[tokio::main]
 async fn main() -> Result<()> {

crates/xen/xenclient/src/error.rs

@@ -20,12 +20,6 @@ pub enum Error {
     PathParentNotFound,
     #[error("domain does not exist")]
     DomainNonExistent,
-    #[error("elf parse failed: {0}")]
-    ElfParseFailed(#[from] elf::ParseError),
-    #[error("mmap failed")]
-    MmapFailed,
-    #[error("munmap failed: {0}")]
-    UnmapFailed(nix::errno::Errno),
     #[error("memory setup failed: {0}")]
     MemorySetupFailed(&'static str),
     #[error("populate physmap failed: wanted={0}, received={1}, input_extents={2}")]
@@ -46,6 +40,8 @@ pub enum Error {
     InvalidPciBdfString,
     #[error("pci device {0} is not assignable")]
     PciDeviceNotAssignable(PciBdf),
+    #[error("xen platform error: {0}")]
+    XenPlatform(#[from] xenplatform::error::Error),
 }
 
 pub type Result<T> = std::result::Result<T, Error>;

crates/xen/xenclient/src/lib.rs

@@ -1,18 +1,13 @@
-pub mod boot;
-pub mod elfloader;
 pub mod error;
-pub mod mem;
-pub mod sys;
 
-use crate::boot::{BootDomain, BootSetup};
-use crate::elfloader::ElfImageLoader;
 use crate::error::{Error, Result};
-use boot::BootSetupPlatform;
 use indexmap::IndexMap;
 use log::{debug, trace, warn};
 use pci::{PciBdf, XenPciBackend};
-use sys::XEN_PAGE_SHIFT;
 use tokio::time::timeout;
+use xenplatform::boot::{BootDomain, BootSetup, BootSetupPlatform};
+use xenplatform::elfloader::ElfImageLoader;
+use xenplatform::sys::XEN_PAGE_SHIFT;
 
 use std::path::PathBuf;
 use std::str::FromStr;
@@ -28,10 +23,6 @@ use xenstore::{
 
 pub mod pci;
 
-pub mod unsupported;
-#[cfg(target_arch = "x86_64")]
-pub mod x86pv;
-
 #[derive(Clone)]
 pub struct XenClient<P: BootSetupPlatform> {
     pub store: XsdClient,

crates/xen/xenevtchn/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "krata-xenevtchn"
-description = "An implementation of xen evtchn for krata."
+description = "An implementation of Xen evtchn for krata."
 license.workspace = true
 version.workspace = true
 homepage.workspace = true

crates/xen/xengnt/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "krata-xengnt"
-description = "An implementation of xen grant interfaces for krata."
+description = "An implementation of Xen grant interfaces for krata"
 license.workspace = true
 version.workspace = true
 homepage.workspace = true

crates/xen/xenplatform/Cargo.toml

@@ -0,0 +1,34 @@
+[package]
+name = "krata-xenplatform"
+description = "An implementation of Xen platforms for krata"
+license.workspace = true
+version.workspace = true
+homepage.workspace = true
+repository.workspace = true
+edition = "2021"
+resolver = "2"
+
+[dependencies]
+async-trait = { workspace = true }
+c2rust-bitfields = { workspace = true }
+elf = { workspace = true }
+flate2 = { workspace = true }
+indexmap = { workspace = true }
+libc = { workspace = true }
+log = { workspace = true }
+krata-xencall = { path = "../xencall", version = "^0.0.10" }
+memchr = { workspace = true }
+nix = { workspace = true }
+regex = { workspace = true }
+slice-copy = { workspace = true }
+thiserror = { workspace = true }
+tokio = { workspace = true }
+uuid = { workspace = true }
+xz2 = { workspace = true }
+
+[dev-dependencies]
+env_logger = { workspace = true }
+tokio = { workspace = true }
+
+[lib]
+name = "xenplatform"

crates/xen/xenplatform/src/error.rs

@@ -0,0 +1,43 @@
+use std::io;
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("io issue encountered: {0}")]
+    Io(#[from] io::Error),
+    #[error("xencall issue encountered: {0}")]
+    XenCall(#[from] xencall::error::Error),
+    #[error("domain does not have a tty")]
+    TtyNotFound,
+    #[error("introducing the domain failed")]
+    IntroduceDomainFailed,
+    #[error("string conversion of a path failed")]
+    PathStringConversion,
+    #[error("parent of path not found")]
+    PathParentNotFound,
+    #[error("domain does not exist")]
+    DomainNonExistent,
+    #[error("elf parse failed: {0}")]
+    ElfParseFailed(#[from] elf::ParseError),
+    #[error("mmap failed")]
+    MmapFailed,
+    #[error("munmap failed: {0}")]
+    UnmapFailed(nix::errno::Errno),
+    #[error("memory setup failed: {0}")]
+    MemorySetupFailed(&'static str),
+    #[error("populate physmap failed: wanted={0}, received={1}, input_extents={2}")]
+    PopulatePhysmapFailed(usize, usize, usize),
+    #[error("unknown elf compression method")]
+    ElfCompressionUnknown,
+    #[error("expected elf image format not found")]
+    ElfInvalidImage,
+    #[error("provided elf image does not contain xen support")]
+    ElfXenSupportMissing,
+    #[error("regex error: {0}")]
+    RegexError(#[from] regex::Error),
+    #[error("error: {0}")]
+    GenericError(String),
+    #[error("failed to parse int: {0}")]
+    ParseIntError(#[from] std::num::ParseIntError),
+}
+
+pub type Result<T> = std::result::Result<T, Error>;

crates/xen/xenplatform/src/lib.rs

@@ -0,0 +1,11 @@
+pub mod boot;
+pub mod elfloader;
+pub mod error;
+pub mod mem;
+pub mod sys;
+
+use crate::error::Error;
+
+pub mod unsupported;
+#[cfg(target_arch = "x86_64")]
+pub mod x86pv;

crates/xen/xenstore/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "krata-xenstore"
-description = "A client that interacts with xenstore for krata."
+description = "A client that interacts with xenstore for krata"
 license.workspace = true
 version.workspace = true
 homepage.workspace = true

release-plz.toml

@@ -36,6 +36,10 @@ semver_check = false
 name = "krata-xengnt"
 semver_check = false
 
+[[package]]
+name = "krata-xenplatform"
+semver_check = false
+
 [[package]]
 name = "krata-xenstore"
 semver_check = false