update bindings for more const correctness

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 # [unreleased]
 
+# [v0.1.3] 2024-06-01
+
+Fixed documentation build.
+
 # [v0.1.2] 2024-06-01
 
 Restructured crate to be the root package of a workspace.

Cargo.lock

@@ -4,15 +4,15 @@ version = 3
 
 [[package]]
 name = "bitflags"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
 [[package]]
 name = "cc"
-version = "1.0.98"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41c270e7540d725e65ac7f1b212ac8ce349719624d7bcff99f8e2e488e8cf03f"
+checksum = "324c74f2155653c90b04f25b2a47a8a631360cb908f92a772695f430c7e31052"
 
 [[package]]
 name = "equivalent"
@@ -44,7 +44,7 @@ checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
 [[package]]
 name = "libcsp"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "bitflags",
  "libc",
@@ -54,18 +54,10 @@ dependencies = [
 
 [[package]]
 name = "libcsp-cargo-build"
-version = "0.1.0"
+version = "0.2.0"
-dependencies = [
- "cc",
-]
-
-[[package]]
-name = "libcsp-cargo-build"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "554733e90f35324f10e32b4e848f5c85eb28cd099c5015d9fbe869f3b5a59944"
 dependencies = [
  "cc",
+ "thiserror",
 ]
 
 [[package]]
@@ -73,21 +65,21 @@ name = "libcsp-rust-examples"
 version = "0.1.0"
 dependencies = [
  "libcsp",
- "libcsp-cargo-build 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libcsp-cargo-build",
 ]
 
 [[package]]
 name = "libcsp-sys"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "memchr"
-version = "2.7.2"
+version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
 [[package]]
 name = "num_enum"
@@ -121,9 +113,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.84"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec96c6a92621310b51366f1e28d05ef11489516e93be030060e5fc12024a49d6"
+checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
 dependencies = [
  "unicode-ident",
 ]
@@ -139,15 +131,35 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.66"
+version = "2.0.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c42f3f41a2de00b01c0aaad383c5a45241efc8b2d1eda5661812fda5f3cdcff5"
+checksum = "b146dcf730474b4bcd16c311627b31ede9ab149045db4d6088b3becaea046462"
 dependencies = [
  "proc-macro2",
  "quote",
  "unicode-ident",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.62"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2675633b1499176c2dff06b0856a27976a8f9d436737b4cf4f312d4d91d8bbb"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.62"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d20468752b09f49e909e55a5d338caa8bedf615594e9d80bc4c565d30faf798c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.6"

Cargo.toml

@@ -1,6 +1,14 @@
+[workspace]
+members = [
+    "libcsp-cargo-build",
+    "examples"
+]
+default-members = ["examples"]
+resolver = "2"
+
 [package]
 name = "libcsp"
-version = "0.1.2"
+version = "0.1.3"
 edition = "2021"
 authors = ["Robin Mueller <muellerr@irs.uni-stuttgart.de>"]
 description = "Safe and ergonomic Rust API for libcsp on top on libcsp-sys"
@@ -16,10 +24,3 @@ bitflags = "2"
 num_enum = "0.7"
 libc = "0.2"
 libcsp-sys = { version = "0.1", path = "libcsp-sys" }
-
-[workspace]
-members = [
-    "libcsp-cargo-build",
-    "examples"
-]
-resolver = "2"

README.md

@@ -48,7 +48,7 @@ in Rust. You can run the example using the following steps:
 
 1. Clone/Copy `libcsp` into the `lib` folder, for example by using the provided `lib/clone-csp.sh`
    script or adding `libcsp` as a git submodule.
-2. You can now use `cargo run -p libcsp-rust-examples` to run the server/client example.
+2. You can now use `cargo run` to run the server/client example.
 
 ## Compile-time configuration of the `libcsp-sys` library
 
@@ -59,8 +59,8 @@ The user has to provide the path to a directory containing this `autoconfig.rs`
 `CSP_CONFIG_DIR` environmental variable.
 
 You can automatically generate this file when using `libcsp-cargo-build` by using the
-[`generate_autoconf_rust_file`](here be link soon) method of the Builder object as done in the
+[`generate_autoconf_rust_file`](https://docs.rs/libcsp-cargo-build/latest/libcsp_cargo_build/fn.generate_autoconf_rust_file.html)
-example build script.
+method of the Builder object as done in the example build script.
 
 In this workspace, the `CSP_CONFIG_DIR` variable is hardcoded using the following `.cargo/config.toml`
 configuration:

clib/bindings.rs

@@ -343,9 +343,9 @@ pub const CSP_DBG_ETH_ERR_RX_OUT: u32 = 3;
 pub const CSP_DBG_ETH_ERR_SHORT_BEGIN: u32 = 4;
 pub const CSP_DBG_ETH_ERR_INCOMPLETE: u32 = 5;
 pub const CSP_DBG_ETH_ERR_UNKNOWN: u32 = 6;
+pub const __bool_true_false_are_defined: u32 = 1;
 pub const true_: u32 = 1;
 pub const false_: u32 = 0;
-pub const __bool_true_false_are_defined: u32 = 1;
 pub const CSP_QUEUE_OK: u32 = 0;
 pub const CSP_QUEUE_ERROR: i32 = -1;
 pub const CSP_ANY: u32 = 255;
@@ -2411,7 +2411,11 @@ extern "C" {
     ) -> ::core::ffi::c_int;
 }
 extern "C" {
-    pub fn bcopy(__src: *const ::core::ffi::c_void, __dest: *mut ::core::ffi::c_void, __n: usize);
+    pub fn bcopy(
+        __src: *const ::core::ffi::c_void,
+        __dest: *mut ::core::ffi::c_void,
+        __n: ::core::ffi::c_ulong,
+    );
 }
 extern "C" {
     pub fn bzero(__s: *mut ::core::ffi::c_void, __n: ::core::ffi::c_ulong);

clib/cfg/csp/autoconfig.h

@@ -1,4 +1,4 @@
-// This file was auto-generated by libcsp-cargo-build v0.1.0
+// This file was auto-generated by libcsp-cargo-build v0.2.0
 #define CSP_POSIX 1
 #define CSP_ZEPHYR 0
 

clib/clone-csp.sh

@@ -1,3 +1,4 @@
 #!/bin/bash
 git clone https://github.com/us-irs/libcsp.git
+cd libcsp
 git checkout const-correctness 

examples/Cargo.toml

@@ -9,4 +9,4 @@ edition = "2021"
 libcsp = { version = "0.1", path = ".." }
 
 [build-dependencies]
-libcsp-cargo-build = "0.1"
+libcsp-cargo-build = { version = "0.2", path = "../libcsp-cargo-build" }

examples/autoconfig.h

@@ -1,4 +1,4 @@
-// This file was auto-generated by libcsp-cargo-build v0.1.0
+// This file was auto-generated by libcsp-cargo-build v0.2.0
 #define CSP_POSIX 1
 #define CSP_ZEPHYR 0
 

examples/autoconfig.rs

@@ -1,4 +1,4 @@
-// This file was auto-generated by libcsp-cargo-build v0.1.0
+// This file was auto-generated by libcsp-cargo-build v0.2.0
 pub const CSP_CONN_RXQUEUE_LEN: usize = 16;
 pub const CSP_QFIFO_LEN: usize = 16;
 pub const CSP_PORT_MAX_BIND: usize = 16;

examples/build.rs

@@ -11,7 +11,8 @@ fn main() {
 
     // This helper structure will take care of the majority of work to compile libcsp using the
     // cc crate.
-    let mut csp_builder = Builder::new(PathBuf::from(libcsp_path), PathBuf::from(&out_dir));
+    let mut csp_builder = Builder::new(PathBuf::from(libcsp_path), PathBuf::from(&out_dir))
+        .expect("creating libcsp builder failed");
     // A lot of spam we are not interested in usually.
     csp_builder.compiler_warnings = false;
 

libcsp-cargo-build/CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 # [unreleased]
 
+# [v0.2.0] 2024-06-01
+
+Added basic sanity checks for the user-provided `libcsp` location.
+
 # [v0.1.0] 2024-06-01
 
 Initial release

libcsp-cargo-build/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libcsp-cargo-build"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 description = "Tools to build libcsp using cargo"
 homepage = "https://egit.irs.uni-stuttgart.de/rust/libcsp-rust"
@@ -12,3 +12,4 @@ categories = ["aerospace", "external-ffi-bindings", "no-std", "hardware-support"
 
 [dependencies]
 cc = "1"
+thiserror = "1"

libcsp-cargo-build/src/lib.rs

@@ -133,12 +133,34 @@ pub struct Builder {
     build: cc::Build,
 }
 
+#[derive(Debug, Copy, Clone, PartialEq, Eq, thiserror::Error)]
+pub enum BuildCreationError {
+    #[error("The specified libcsp path does not exist")]
+    PathDoesNotExist,
+    #[error("The specified libcsp path does not have the expected format of the library")]
+    InvalidLibcspFormat,
+}
+
 impl Builder {
-    /// Create a new builder instance.
+    /// Create a new builder instance. Returns [BuildCreationError] if the specified libcsp path
-    pub fn new(libcsp_path: PathBuf, out_dir: PathBuf) -> Self {
+    /// does not exist or does not have the expected format.
+    pub fn new(libcsp_path: PathBuf, out_dir: PathBuf) -> Result<Self, BuildCreationError> {
+        // Basic sanity checks for the passed libcsp path.
+        if !libcsp_path.exists() {
+            return Err(BuildCreationError::PathDoesNotExist);
+        }
+        if !libcsp_path
+            .join("include")
+            .join("csp")
+            .join("csp.h")
+            .exists()
+        {
+            return Err(BuildCreationError::InvalidLibcspFormat);
+        }
+
         let mut libcsp_src_path_base = libcsp_path.clone();
         libcsp_src_path_base.push("src");
-        Self {
+        Ok(Self {
             generate_autoconf_file: true,
             libcsp_path,
             libcsp_src_path_base,
@@ -146,7 +168,7 @@ impl Builder {
             cfg: Default::default(),
             compiler_warnings: true,
             build: Default::default(),
-        }
+        })
     }
 
     /// Access to the underlying [cc::Build] builder object.

libcsp-sys/src/lib.rs

@@ -483,7 +483,7 @@ extern "C" {
     pub fn csp_buffer_get(unused: usize) -> *mut csp_packet_t;
 
     #[doc = " Free buffer (from task context).\n\n @param[in] buffer buffer to free. NULL is handled gracefully."]
-    pub fn csp_buffer_free(buffer: *mut ::core::ffi::c_void);
+    pub fn csp_buffer_free(buffer: *const ::core::ffi::c_void);
 
     #[doc = " Print connection table to stdout."]
     pub fn csp_conn_print_table();

src/lib.rs

@@ -398,6 +398,21 @@ pub fn csp_accept(socket: &mut CspSocket, timeout: Duration) -> Option<CspConnRe
     }))
 }
 
+/// Rust wrapper for [ffi::csp_socket_close] which returns the result code directly.
+pub fn csp_socket_close_raw(sock: &mut CspSocket) -> i32 {
+    unsafe { ffi::csp_socket_close(&mut sock.0) }
+}
+
+/// Rust wrapper for [ffi::csp_socket_close].
+///
+/// This function will panic if the error code returned from [ffi::csp_socket_close] is not one of
+/// [CspError]. [csp_socket_close_raw] can be used if this is not acceptable.
+pub fn csp_socket_close(sock: &mut CspSocket) -> Result<(), CspError> {
+    let result = unsafe { ffi::csp_socket_close(&mut sock.0) };
+    Err(CspError::try_from(result)
+        .unwrap_or_else(|_| panic!("unexpected error value {} from csp_socket_close", result)))
+}
+
 /// Rust wrapper for [ffi::csp_read].
 pub fn csp_read(conn: &mut CspConnRef, timeout: Duration) -> Option<CspPacketRef> {
     let timeout_millis = timeout.as_millis();
@@ -589,7 +604,7 @@ pub fn csp_conn_print_table() {
 pub fn csp_buffer_free(packet: impl Into<CspPacketRef>) {
     // SAFETY: FFI call and the Rust type system actually ensure the correct type
     // is free'd here, while also taking the packet by value.
-    unsafe { ffi::csp_buffer_free(packet.into().0 as *mut libc::c_void) }
+    unsafe { ffi::csp_buffer_free(packet.into().0 as *const libc::c_void) }
 }
 
 /// Rust wrapper for [ffi::csp_transaction_persistent].