This allows access to errno values.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/Cargo.lock                               |  7 ++++
 rust/qemu-api/Cargo.toml                      |  1 +
 scripts/archive-source.sh                     |  2 +-
 scripts/make-release                          |  2 +-
 subprojects/.gitignore                        |  1 +
 subprojects/libc-0.2-rs.wrap                  |  7 ++++
 .../packagefiles/libc-0.2-rs/meson.build      | 37 +++++++++++++++++++
 7 files changed, 55 insertions(+), 2 deletions(-)
 create mode 100644 subprojects/libc-0.2-rs.wrap
 create mode 100644 subprojects/packagefiles/libc-0.2-rs/meson.build

diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 79e142723b8..2ebf0a11ea4 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -54,6 +54,12 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "libc"
+version = "0.2.162"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398"
+
 [[package]]
 name = "pl011"
 version = "0.1.0"
@@ -100,6 +106,7 @@ dependencies = [
 name = "qemu_api"
 version = "0.1.0"
 dependencies = [
+ "libc",
  "qemu_api_macros",
  "version_check",
 ]
diff --git a/rust/qemu-api/Cargo.toml b/rust/qemu-api/Cargo.toml
index a51dd142852..57747bc9341 100644
--- a/rust/qemu-api/Cargo.toml
+++ b/rust/qemu-api/Cargo.toml
@@ -16,6 +16,7 @@ rust-version = "1.63.0"
 
 [dependencies]
 qemu_api_macros = { path = "../qemu-api-macros" }
+libc = "0.2.162"
 
 [build-dependencies]
 version_check = "~0.9"
diff --git a/scripts/archive-source.sh b/scripts/archive-source.sh
index 30677c3ec90..e461c1531ed 100755
--- a/scripts/archive-source.sh
+++ b/scripts/archive-source.sh
@@ -28,7 +28,7 @@ sub_file="${sub_tdir}/submodule.tar"
 # different to the host OS.
 subprojects="keycodemapdb libvfio-user berkeley-softfloat-3
   berkeley-testfloat-3 arbitrary-int-1-rs bilge-0.2-rs
-  bilge-impl-0.2-rs either-1-rs itertools-0.11-rs proc-macro2-1-rs
+  bilge-impl-0.2-rs either-1-rs itertools-0.11-rs libc-0.2-rs proc-macro2-1-rs
   proc-macro-error-1-rs proc-macro-error-attr-1-rs quote-1-rs
   syn-2-rs unicode-ident-1-rs"
 sub_deinit=""
diff --git a/scripts/make-release b/scripts/make-release
index 1b89b3423a8..8c3594a1a47 100755
--- a/scripts/make-release
+++ b/scripts/make-release
@@ -41,7 +41,7 @@ fi
 # Only include wraps that are invoked with subproject()
 SUBPROJECTS="libvfio-user keycodemapdb berkeley-softfloat-3
   berkeley-testfloat-3 arbitrary-int-1-rs bilge-0.2-rs
-  bilge-impl-0.2-rs either-1-rs itertools-0.11-rs proc-macro2-1-rs
+  bilge-impl-0.2-rs either-1-rs itertools-0.11-rs libc-0.2-rs proc-macro2-1-rs
   proc-macro-error-1-rs proc-macro-error-attr-1-rs quote-1-rs
   syn-2-rs unicode-ident-1-rs"
 
diff --git a/subprojects/.gitignore b/subprojects/.gitignore
index 50f173f90db..d12d34618cc 100644
--- a/subprojects/.gitignore
+++ b/subprojects/.gitignore
@@ -11,6 +11,7 @@
 /bilge-impl-0.2.0
 /either-1.12.0
 /itertools-0.11.0
+/libc-0.2.162
 /proc-macro-error-1.0.4
 /proc-macro-error-attr-1.0.4
 /proc-macro2-1.0.84
diff --git a/subprojects/libc-0.2-rs.wrap b/subprojects/libc-0.2-rs.wrap
new file mode 100644
index 00000000000..bbe08f87883
--- /dev/null
+++ b/subprojects/libc-0.2-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = libc-0.2.162
+source_url = https://crates.io/api/v1/crates/libc/0.2.162/download
+source_filename = libc-0.2.162.tar.gz
+source_hash = 18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398
+#method = cargo
+patch_directory = libc-0.2-rs
diff --git a/subprojects/packagefiles/libc-0.2-rs/meson.build b/subprojects/packagefiles/libc-0.2-rs/meson.build
new file mode 100644
index 00000000000..ac4f80dba98
--- /dev/null
+++ b/subprojects/packagefiles/libc-0.2-rs/meson.build
@@ -0,0 +1,37 @@
+project('libc-0.2-rs', 'rust',
+  meson_version: '>=1.5.0',
+  version: '0.2.162',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+_libc_rs = static_library(
+  'libc',
+  files('src/lib.rs'),
+  gnu_symbol_visibility: 'hidden',
+  override_options: ['rust_std=2015', 'build.rust_std=2015'],
+  rust_abi: 'rust',
+  rust_args: [
+    '--cap-lints', 'allow',
+    '--cfg', 'freebsd11',
+    '--cfg', 'libc_priv_mod_use',
+    '--cfg', 'libc_union',
+    '--cfg', 'libc_const_size_of',
+    '--cfg', 'libc_align',
+    '--cfg', 'libc_int128',
+    '--cfg', 'libc_core_cvoid',
+    '--cfg', 'libc_packedN',
+    '--cfg', 'libc_cfg_target_vendor',
+    '--cfg', 'libc_non_exhaustive',
+    '--cfg', 'libc_long_array',
+    '--cfg', 'libc_ptr_addr_of',
+    '--cfg', 'libc_underscore_const_names',
+    '--cfg', 'libc_const_extern_fn',
+  ],
+  dependencies: [],
+)
+
+libc_dep = declare_dependency(
+  link_with: _libc_rs,
+)
+
+meson.override_dependency('libc-0.2-rs', libc_dep)
-- 
2.48.1