From f45325bd161e2c0bc97f3b69b6a2785448bdb2a9 Mon Sep 17 00:00:00 2001
From: JustPav <aksenovpaveldmitrievich@gmail.com>
Date: Sun, 9 Aug 2026 13:17:17 +0400
Subject: [PATCH 1/2] pam: explicitly link against libpam

The PAM module didn't specify #[link(name = "pam")] on the
extern "C" block, so the linker never emitted -lpam. PAM then
failed to dlopen the module with undefined symbol errors for
pam_get_item, pam_get_user, pam_set_data, pam_get_data
---
 pam/src/ffi.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pam/src/ffi.rs b/pam/src/ffi.rs
index 5a798228d..9425dc6df 100644
--- a/pam/src/ffi.rs
+++ b/pam/src/ffi.rs
@@ -30,6 +30,7 @@ pub struct pam_handle_t {
     _private: [u8; 0],
 }
 
+#[link(name = "pam")]
 unsafe extern "C" {
     /// Get the username
     pub fn pam_get_user(

From 672b27dba3698bde0eed395c39b7d277024d3968 Mon Sep 17 00:00:00 2001
From: JustPav <aksenovpaveldmitrievich@gmail.com>
Date: Sat, 15 Aug 2026 20:16:28 +0400
Subject: [PATCH 2/2] fix: Correction in accordance with requirements

---
 .github/workflows/CI.yml |  7 ++++++-
 pam/build.rs             | 11 +++++++++++
 pam/src/ffi.rs           |  1 -
 3 files changed, 17 insertions(+), 2 deletions(-)
 create mode 100644 pam/build.rs

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 8f54349e7..165aae463 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -54,6 +54,11 @@ jobs:
         run: |
           cargo build --manifest-path ./server/Cargo.toml --no-default-features --features openssl_crypto
 
+      - name: Install PAM headers
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libpam0g-dev
+
       - name: Build PAM
         run: |
           cargo build --manifest-path ./pam/Cargo.toml
@@ -124,7 +129,7 @@ jobs:
       - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - name: Install dependencies
-        run: dnf install -y git meson gcc systemd
+        run: dnf install -y git meson gcc systemd pam-devel
       - name: Build (portal)
         working-directory: ./portal
         run: meson setup ./ _build --prefix /usr && ninja -C _build
diff --git a/pam/build.rs b/pam/build.rs
new file mode 100644
index 000000000..38fe76276
--- /dev/null
+++ b/pam/build.rs
@@ -0,0 +1,11 @@
+use std::env::var_os;
+
+fn main() {
+    if var_os("DOCS_RS").is_some() {
+        // libpam isn't available on docs.rs, and we don't need to link
+        // against it to build the documentation.
+        return;
+    }
+
+    println!("cargo::rustc-link-lib=pam");
+}
diff --git a/pam/src/ffi.rs b/pam/src/ffi.rs
index 9425dc6df..5a798228d 100644
--- a/pam/src/ffi.rs
+++ b/pam/src/ffi.rs
@@ -30,7 +30,6 @@ pub struct pam_handle_t {
     _private: [u8; 0],
 }
 
-#[link(name = "pam")]
 unsafe extern "C" {
     /// Get the username
     pub fn pam_get_user(