diff --git a/Makefile b/Makefile
index 23f153d2c..3f5703468 100644
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,21 @@
 PAM_SRC_DIR = src/pam
 
-BINDGEN_CMD = bindgen --allowlist-function '^pam_.*$$' --allowlist-var '^PAM_.*$$' --opaque-type pam_handle_t --ctypes-prefix libc
+BINDGEN_CMD = bindgen --merge-extern-blocks --allowlist-function '^pam_.*$$' --allowlist-var '^PAM_.*$$' --opaque-type pam_handle_t --ctypes-prefix libc
 
 .PHONY: all clean pam-sys pam-sys-diff
 
 pam-sys-diff: $(PAM_SRC_DIR)/wrapper.h
-	@$(BINDGEN_CMD) $< | diff --color=auto $(PAM_SRC_DIR)/sys.rs - || (echo run \'make -B pam-sys\' to apply these changes && false)
+	@$(BINDGEN_CMD) $< -- --target=x86_64-pc-linux-gnu | diff --color=auto $(PAM_SRC_DIR)/sys/x86_64_linux.rs - || (echo run \'make -B pam-sys\' to apply these changes && false)
 	@echo $(PAM_SRC_DIR)/sys.rs does not need to be re-generated
 
 # use 'make pam-sys' to re-generate the sys.rs file
-pam-sys: $(PAM_SRC_DIR)/sys.rs
+pam-sys: $(PAM_SRC_DIR)/sys/x86_64_linux.rs $(PAM_SRC_DIR)/sys/i386_linux.rs
 
-$(PAM_SRC_DIR)/sys.rs: $(PAM_SRC_DIR)/wrapper.h
-	$(BINDGEN_CMD) $< --output $@
+$(PAM_SRC_DIR)/sys/x86_64_linux.rs: $(PAM_SRC_DIR)/wrapper.h
+	$(BINDGEN_CMD) $< --output $@ -- --target=x86_64-pc-linux-gnu
+
+$(PAM_SRC_DIR)/sys/i386_linux.rs: $(PAM_SRC_DIR)/wrapper.h
+	$(BINDGEN_CMD) $< --output $@ -- --target=i386-pc-linux-gnu
 
 clean:
-	rm $(PAM_SRC_DIR)/sys.rs
+	rm $(PAM_SRC_DIR)/sys/x86_64_linux.rs
diff --git a/src/pam/sys/i386_linux.rs b/src/pam/sys/i386_linux.rs
new file mode 100644
index 000000000..f4679163a
--- /dev/null
+++ b/src/pam/sys/i386_linux.rs
@@ -0,0 +1,801 @@
+/* automatically generated by rust-bindgen 0.69.1 */
+
+pub const PAM_SUCCESS: u32 = 0;
+pub const PAM_OPEN_ERR: u32 = 1;
+pub const PAM_SYMBOL_ERR: u32 = 2;
+pub const PAM_SERVICE_ERR: u32 = 3;
+pub const PAM_SYSTEM_ERR: u32 = 4;
+pub const PAM_BUF_ERR: u32 = 5;
+pub const PAM_PERM_DENIED: u32 = 6;
+pub const PAM_AUTH_ERR: u32 = 7;
+pub const PAM_CRED_INSUFFICIENT: u32 = 8;
+pub const PAM_AUTHINFO_UNAVAIL: u32 = 9;
+pub const PAM_USER_UNKNOWN: u32 = 10;
+pub const PAM_MAXTRIES: u32 = 11;
+pub const PAM_NEW_AUTHTOK_REQD: u32 = 12;
+pub const PAM_ACCT_EXPIRED: u32 = 13;
+pub const PAM_SESSION_ERR: u32 = 14;
+pub const PAM_CRED_UNAVAIL: u32 = 15;
+pub const PAM_CRED_EXPIRED: u32 = 16;
+pub const PAM_CRED_ERR: u32 = 17;
+pub const PAM_NO_MODULE_DATA: u32 = 18;
+pub const PAM_CONV_ERR: u32 = 19;
+pub const PAM_AUTHTOK_ERR: u32 = 20;
+pub const PAM_AUTHTOK_RECOVERY_ERR: u32 = 21;
+pub const PAM_AUTHTOK_LOCK_BUSY: u32 = 22;
+pub const PAM_AUTHTOK_DISABLE_AGING: u32 = 23;
+pub const PAM_TRY_AGAIN: u32 = 24;
+pub const PAM_IGNORE: u32 = 25;
+pub const PAM_ABORT: u32 = 26;
+pub const PAM_AUTHTOK_EXPIRED: u32 = 27;
+pub const PAM_MODULE_UNKNOWN: u32 = 28;
+pub const PAM_BAD_ITEM: u32 = 29;
+pub const PAM_CONV_AGAIN: u32 = 30;
+pub const PAM_INCOMPLETE: u32 = 31;
+pub const PAM_SILENT: u32 = 32768;
+pub const PAM_DISALLOW_NULL_AUTHTOK: u32 = 1;
+pub const PAM_ESTABLISH_CRED: u32 = 2;
+pub const PAM_DELETE_CRED: u32 = 4;
+pub const PAM_REINITIALIZE_CRED: u32 = 8;
+pub const PAM_REFRESH_CRED: u32 = 16;
+pub const PAM_CHANGE_EXPIRED_AUTHTOK: u32 = 32;
+pub const PAM_SERVICE: u32 = 1;
+pub const PAM_USER: u32 = 2;
+pub const PAM_TTY: u32 = 3;
+pub const PAM_RHOST: u32 = 4;
+pub const PAM_CONV: u32 = 5;
+pub const PAM_AUTHTOK: u32 = 6;
+pub const PAM_OLDAUTHTOK: u32 = 7;
+pub const PAM_RUSER: u32 = 8;
+pub const PAM_USER_PROMPT: u32 = 9;
+pub const PAM_FAIL_DELAY: u32 = 10;
+pub const PAM_XDISPLAY: u32 = 11;
+pub const PAM_XAUTHDATA: u32 = 12;
+pub const PAM_AUTHTOK_TYPE: u32 = 13;
+pub const PAM_DATA_SILENT: u32 = 1073741824;
+pub const PAM_PROMPT_ECHO_OFF: u32 = 1;
+pub const PAM_PROMPT_ECHO_ON: u32 = 2;
+pub const PAM_ERROR_MSG: u32 = 3;
+pub const PAM_TEXT_INFO: u32 = 4;
+pub const PAM_RADIO_TYPE: u32 = 5;
+pub const PAM_BINARY_PROMPT: u32 = 7;
+pub const PAM_MAX_NUM_MSG: u32 = 32;
+pub const PAM_MAX_MSG_SIZE: u32 = 512;
+pub const PAM_MAX_RESP_SIZE: u32 = 512;
+pub const PAM_AUTHTOK_RECOVER_ERR: u32 = 21;
+pub const PAM_BP_MAX_LENGTH: u32 = 131072;
+pub const PAM_BPC_FALSE: u32 = 0;
+pub const PAM_BPC_TRUE: u32 = 1;
+pub const PAM_BPC_OK: u32 = 1;
+pub const PAM_BPC_SELECT: u32 = 2;
+pub const PAM_BPC_DONE: u32 = 3;
+pub const PAM_BPC_FAIL: u32 = 4;
+pub const PAM_BPC_GETENV: u32 = 65;
+pub const PAM_BPC_PUTENV: u32 = 66;
+pub const PAM_BPC_TEXT: u32 = 67;
+pub const PAM_BPC_ERROR: u32 = 68;
+pub const PAM_BPC_PROMPT: u32 = 69;
+pub const PAM_BPC_PASS: u32 = 70;
+pub const PAM_PRELIM_CHECK: u32 = 16384;
+pub const PAM_UPDATE_AUTHTOK: u32 = 8192;
+pub const PAM_DATA_REPLACE: u32 = 536870912;
+pub const PAM_MODUTIL_NGROUPS: u32 = 64;
+pub type pam_handle_t = u8;
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct pam_message {
+    pub msg_style: libc::c_int,
+    pub msg: *const libc::c_char,
+}
+#[test]
+fn bindgen_test_layout_pam_message() {
+    const UNINIT: ::std::mem::MaybeUninit<pam_message> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<pam_message>(),
+        8usize,
+        concat!("Size of: ", stringify!(pam_message))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<pam_message>(),
+        4usize,
+        concat!("Alignment of ", stringify!(pam_message))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).msg_style) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_message),
+            "::",
+            stringify!(msg_style)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).msg) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_message),
+            "::",
+            stringify!(msg)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct pam_response {
+    pub resp: *mut libc::c_char,
+    pub resp_retcode: libc::c_int,
+}
+#[test]
+fn bindgen_test_layout_pam_response() {
+    const UNINIT: ::std::mem::MaybeUninit<pam_response> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<pam_response>(),
+        8usize,
+        concat!("Size of: ", stringify!(pam_response))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<pam_response>(),
+        4usize,
+        concat!("Alignment of ", stringify!(pam_response))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).resp) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_response),
+            "::",
+            stringify!(resp)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).resp_retcode) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_response),
+            "::",
+            stringify!(resp_retcode)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct pam_conv {
+    pub conv: ::std::option::Option<
+        unsafe extern "C" fn(
+            num_msg: libc::c_int,
+            msg: *mut *const pam_message,
+            resp: *mut *mut pam_response,
+            appdata_ptr: *mut libc::c_void,
+        ) -> libc::c_int,
+    >,
+    pub appdata_ptr: *mut libc::c_void,
+}
+#[test]
+fn bindgen_test_layout_pam_conv() {
+    const UNINIT: ::std::mem::MaybeUninit<pam_conv> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<pam_conv>(),
+        8usize,
+        concat!("Size of: ", stringify!(pam_conv))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<pam_conv>(),
+        4usize,
+        concat!("Alignment of ", stringify!(pam_conv))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).conv) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_conv),
+            "::",
+            stringify!(conv)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).appdata_ptr) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_conv),
+            "::",
+            stringify!(appdata_ptr)
+        )
+    );
+}
+pub type __uid_t = libc::c_uint;
+pub type __gid_t = libc::c_uint;
+pub type gid_t = __gid_t;
+pub type uid_t = __uid_t;
+pub type __gnuc_va_list = __builtin_va_list;
+pub type va_list = __gnuc_va_list;
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct passwd {
+    pub pw_name: *mut libc::c_char,
+    pub pw_passwd: *mut libc::c_char,
+    pub pw_uid: __uid_t,
+    pub pw_gid: __gid_t,
+    pub pw_gecos: *mut libc::c_char,
+    pub pw_dir: *mut libc::c_char,
+    pub pw_shell: *mut libc::c_char,
+}
+#[test]
+fn bindgen_test_layout_passwd() {
+    const UNINIT: ::std::mem::MaybeUninit<passwd> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<passwd>(),
+        28usize,
+        concat!("Size of: ", stringify!(passwd))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<passwd>(),
+        4usize,
+        concat!("Alignment of ", stringify!(passwd))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_name) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_name)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_passwd) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_passwd)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_uid) as usize - ptr as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_uid)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_gid) as usize - ptr as usize },
+        12usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_gid)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_gecos) as usize - ptr as usize },
+        16usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_gecos)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_dir) as usize - ptr as usize },
+        20usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_dir)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).pw_shell) as usize - ptr as usize },
+        24usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(passwd),
+            "::",
+            stringify!(pw_shell)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct group {
+    pub gr_name: *mut libc::c_char,
+    pub gr_passwd: *mut libc::c_char,
+    pub gr_gid: __gid_t,
+    pub gr_mem: *mut *mut libc::c_char,
+}
+#[test]
+fn bindgen_test_layout_group() {
+    const UNINIT: ::std::mem::MaybeUninit<group> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<group>(),
+        16usize,
+        concat!("Size of: ", stringify!(group))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<group>(),
+        4usize,
+        concat!("Alignment of ", stringify!(group))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).gr_name) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(group),
+            "::",
+            stringify!(gr_name)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).gr_passwd) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(group),
+            "::",
+            stringify!(gr_passwd)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).gr_gid) as usize - ptr as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(group),
+            "::",
+            stringify!(gr_gid)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).gr_mem) as usize - ptr as usize },
+        12usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(group),
+            "::",
+            stringify!(gr_mem)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct spwd {
+    pub sp_namp: *mut libc::c_char,
+    pub sp_pwdp: *mut libc::c_char,
+    pub sp_lstchg: libc::c_long,
+    pub sp_min: libc::c_long,
+    pub sp_max: libc::c_long,
+    pub sp_warn: libc::c_long,
+    pub sp_inact: libc::c_long,
+    pub sp_expire: libc::c_long,
+    pub sp_flag: libc::c_ulong,
+}
+#[test]
+fn bindgen_test_layout_spwd() {
+    const UNINIT: ::std::mem::MaybeUninit<spwd> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<spwd>(),
+        36usize,
+        concat!("Size of: ", stringify!(spwd))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<spwd>(),
+        4usize,
+        concat!("Alignment of ", stringify!(spwd))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_namp) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_namp)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_pwdp) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_pwdp)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_lstchg) as usize - ptr as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_lstchg)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_min) as usize - ptr as usize },
+        12usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_min)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_max) as usize - ptr as usize },
+        16usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_max)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_warn) as usize - ptr as usize },
+        20usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_warn)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_inact) as usize - ptr as usize },
+        24usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_inact)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_expire) as usize - ptr as usize },
+        28usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_expire)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).sp_flag) as usize - ptr as usize },
+        32usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(spwd),
+            "::",
+            stringify!(sp_flag)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct pam_modutil_privs {
+    pub grplist: *mut gid_t,
+    pub number_of_groups: libc::c_int,
+    pub allocated: libc::c_int,
+    pub old_gid: gid_t,
+    pub old_uid: uid_t,
+    pub is_dropped: libc::c_int,
+}
+#[test]
+fn bindgen_test_layout_pam_modutil_privs() {
+    const UNINIT: ::std::mem::MaybeUninit<pam_modutil_privs> = ::std::mem::MaybeUninit::uninit();
+    let ptr = UNINIT.as_ptr();
+    assert_eq!(
+        ::std::mem::size_of::<pam_modutil_privs>(),
+        24usize,
+        concat!("Size of: ", stringify!(pam_modutil_privs))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<pam_modutil_privs>(),
+        4usize,
+        concat!("Alignment of ", stringify!(pam_modutil_privs))
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).grplist) as usize - ptr as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_modutil_privs),
+            "::",
+            stringify!(grplist)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).number_of_groups) as usize - ptr as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_modutil_privs),
+            "::",
+            stringify!(number_of_groups)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).allocated) as usize - ptr as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_modutil_privs),
+            "::",
+            stringify!(allocated)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).old_gid) as usize - ptr as usize },
+        12usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_modutil_privs),
+            "::",
+            stringify!(old_gid)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).old_uid) as usize - ptr as usize },
+        16usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_modutil_privs),
+            "::",
+            stringify!(old_uid)
+        )
+    );
+    assert_eq!(
+        unsafe { ::std::ptr::addr_of!((*ptr).is_dropped) as usize - ptr as usize },
+        20usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(pam_modutil_privs),
+            "::",
+            stringify!(is_dropped)
+        )
+    );
+}
+pub const pam_modutil_redirect_fd_PAM_MODUTIL_IGNORE_FD: pam_modutil_redirect_fd = 0;
+pub const pam_modutil_redirect_fd_PAM_MODUTIL_PIPE_FD: pam_modutil_redirect_fd = 1;
+pub const pam_modutil_redirect_fd_PAM_MODUTIL_NULL_FD: pam_modutil_redirect_fd = 2;
+pub type pam_modutil_redirect_fd = libc::c_uint;
+pub type __builtin_va_list = *mut libc::c_char;
+extern "C" {
+    pub fn pam_set_item(
+        pamh: *mut pam_handle_t,
+        item_type: libc::c_int,
+        item: *const libc::c_void,
+    ) -> libc::c_int;
+    pub fn pam_get_item(
+        pamh: *const pam_handle_t,
+        item_type: libc::c_int,
+        item: *mut *const libc::c_void,
+    ) -> libc::c_int;
+    pub fn pam_strerror(pamh: *mut pam_handle_t, errnum: libc::c_int) -> *const libc::c_char;
+    pub fn pam_putenv(pamh: *mut pam_handle_t, name_value: *const libc::c_char) -> libc::c_int;
+    pub fn pam_getenv(pamh: *mut pam_handle_t, name: *const libc::c_char) -> *const libc::c_char;
+    pub fn pam_getenvlist(pamh: *mut pam_handle_t) -> *mut *mut libc::c_char;
+    pub fn pam_fail_delay(pamh: *mut pam_handle_t, musec_delay: libc::c_uint) -> libc::c_int;
+    pub fn pam_start(
+        service_name: *const libc::c_char,
+        user: *const libc::c_char,
+        pam_conversation: *const pam_conv,
+        pamh: *mut *mut pam_handle_t,
+    ) -> libc::c_int;
+    pub fn pam_start_confdir(
+        service_name: *const libc::c_char,
+        user: *const libc::c_char,
+        pam_conversation: *const pam_conv,
+        confdir: *const libc::c_char,
+        pamh: *mut *mut pam_handle_t,
+    ) -> libc::c_int;
+    pub fn pam_end(pamh: *mut pam_handle_t, pam_status: libc::c_int) -> libc::c_int;
+    pub fn pam_authenticate(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_setcred(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_acct_mgmt(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_open_session(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_close_session(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_chauthtok(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_vsyslog(
+        pamh: *const pam_handle_t,
+        priority: libc::c_int,
+        fmt: *const libc::c_char,
+        args: va_list,
+    );
+    pub fn pam_syslog(
+        pamh: *const pam_handle_t,
+        priority: libc::c_int,
+        fmt: *const libc::c_char,
+        ...
+    );
+    pub fn pam_vprompt(
+        pamh: *mut pam_handle_t,
+        style: libc::c_int,
+        response: *mut *mut libc::c_char,
+        fmt: *const libc::c_char,
+        args: va_list,
+    ) -> libc::c_int;
+    pub fn pam_prompt(
+        pamh: *mut pam_handle_t,
+        style: libc::c_int,
+        response: *mut *mut libc::c_char,
+        fmt: *const libc::c_char,
+        ...
+    ) -> libc::c_int;
+    pub fn pam_get_authtok(
+        pamh: *mut pam_handle_t,
+        item: libc::c_int,
+        authtok: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_get_authtok_noverify(
+        pamh: *mut pam_handle_t,
+        authtok: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_get_authtok_verify(
+        pamh: *mut pam_handle_t,
+        authtok: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_misc_paste_env(
+        pamh: *mut pam_handle_t,
+        user_env: *const *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_misc_drop_env(env: *mut *mut libc::c_char) -> *mut *mut libc::c_char;
+    pub fn pam_misc_setenv(
+        pamh: *mut pam_handle_t,
+        name: *const libc::c_char,
+        value: *const libc::c_char,
+        readonly: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_set_data(
+        pamh: *mut pam_handle_t,
+        module_data_name: *const libc::c_char,
+        data: *mut libc::c_void,
+        cleanup: ::std::option::Option<
+            unsafe extern "C" fn(
+                pamh: *mut pam_handle_t,
+                data: *mut libc::c_void,
+                error_status: libc::c_int,
+            ),
+        >,
+    ) -> libc::c_int;
+    pub fn pam_get_data(
+        pamh: *const pam_handle_t,
+        module_data_name: *const libc::c_char,
+        data: *mut *const libc::c_void,
+    ) -> libc::c_int;
+    pub fn pam_get_user(
+        pamh: *mut pam_handle_t,
+        user: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_authenticate(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_setcred(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_acct_mgmt(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_open_session(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_close_session(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_chauthtok(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_check_user_in_passwd(
+        pamh: *mut pam_handle_t,
+        user_name: *const libc::c_char,
+        file_name: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_getpwnam(pamh: *mut pam_handle_t, user: *const libc::c_char) -> *mut passwd;
+    pub fn pam_modutil_getpwuid(pamh: *mut pam_handle_t, uid: uid_t) -> *mut passwd;
+    pub fn pam_modutil_getgrnam(pamh: *mut pam_handle_t, group: *const libc::c_char) -> *mut group;
+    pub fn pam_modutil_getgrgid(pamh: *mut pam_handle_t, gid: gid_t) -> *mut group;
+    pub fn pam_modutil_getspnam(pamh: *mut pam_handle_t, user: *const libc::c_char) -> *mut spwd;
+    pub fn pam_modutil_user_in_group_nam_nam(
+        pamh: *mut pam_handle_t,
+        user: *const libc::c_char,
+        group: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_user_in_group_nam_gid(
+        pamh: *mut pam_handle_t,
+        user: *const libc::c_char,
+        group: gid_t,
+    ) -> libc::c_int;
+    pub fn pam_modutil_user_in_group_uid_nam(
+        pamh: *mut pam_handle_t,
+        user: uid_t,
+        group: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_user_in_group_uid_gid(
+        pamh: *mut pam_handle_t,
+        user: uid_t,
+        group: gid_t,
+    ) -> libc::c_int;
+    pub fn pam_modutil_getlogin(pamh: *mut pam_handle_t) -> *const libc::c_char;
+    pub fn pam_modutil_read(
+        fd: libc::c_int,
+        buffer: *mut libc::c_char,
+        count: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_modutil_write(
+        fd: libc::c_int,
+        buffer: *const libc::c_char,
+        count: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_modutil_audit_write(
+        pamh: *mut pam_handle_t,
+        type_: libc::c_int,
+        message: *const libc::c_char,
+        retval: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_modutil_drop_priv(
+        pamh: *mut pam_handle_t,
+        p: *mut pam_modutil_privs,
+        pw: *const passwd,
+    ) -> libc::c_int;
+    pub fn pam_modutil_regain_priv(
+        pamh: *mut pam_handle_t,
+        p: *mut pam_modutil_privs,
+    ) -> libc::c_int;
+    pub fn pam_modutil_sanitize_helper_fds(
+        pamh: *mut pam_handle_t,
+        redirect_stdin: pam_modutil_redirect_fd,
+        redirect_stdout: pam_modutil_redirect_fd,
+        redirect_stderr: pam_modutil_redirect_fd,
+    ) -> libc::c_int;
+    pub fn pam_modutil_search_key(
+        pamh: *mut pam_handle_t,
+        file_name: *const libc::c_char,
+        key: *const libc::c_char,
+    ) -> *mut libc::c_char;
+}
diff --git a/src/pam/sys/mod.rs b/src/pam/sys/mod.rs
new file mode 100644
index 000000000..b2f8212db
--- /dev/null
+++ b/src/pam/sys/mod.rs
@@ -0,0 +1,11 @@
+#[cfg_attr(
+    all(target_pointer_width = "64", target_os = "linux"),
+    path = "x86_64_linux.rs"
+)]
+#[cfg_attr(
+    all(target_pointer_width = "32", target_os = "linux"),
+    path = "i386_linux.rs"
+)]
+mod inner;
+
+pub use inner::*;
diff --git a/src/pam/sys.rs b/src/pam/sys/x86_64_linux.rs
similarity index 68%
rename from src/pam/sys.rs
rename to src/pam/sys/x86_64_linux.rs
index f346a02ca..d52ec47d8 100644
--- a/src/pam/sys.rs
+++ b/src/pam/sys/x86_64_linux.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.69.1 */
 
 pub const PAM_SUCCESS: u32 = 0;
 pub const PAM_OPEN_ERR: u32 = 1;
@@ -30,40 +30,57 @@ pub const PAM_ABORT: u32 = 26;
 pub const PAM_AUTHTOK_EXPIRED: u32 = 27;
 pub const PAM_MODULE_UNKNOWN: u32 = 28;
 pub const PAM_BAD_ITEM: u32 = 29;
+pub const PAM_CONV_AGAIN: u32 = 30;
+pub const PAM_INCOMPLETE: u32 = 31;
 pub const PAM_SILENT: u32 = 32768;
 pub const PAM_DISALLOW_NULL_AUTHTOK: u32 = 1;
+pub const PAM_ESTABLISH_CRED: u32 = 2;
+pub const PAM_DELETE_CRED: u32 = 4;
 pub const PAM_REINITIALIZE_CRED: u32 = 8;
+pub const PAM_REFRESH_CRED: u32 = 16;
 pub const PAM_CHANGE_EXPIRED_AUTHTOK: u32 = 32;
+pub const PAM_SERVICE: u32 = 1;
 pub const PAM_USER: u32 = 2;
 pub const PAM_TTY: u32 = 3;
+pub const PAM_RHOST: u32 = 4;
+pub const PAM_CONV: u32 = 5;
+pub const PAM_AUTHTOK: u32 = 6;
+pub const PAM_OLDAUTHTOK: u32 = 7;
 pub const PAM_RUSER: u32 = 8;
+pub const PAM_USER_PROMPT: u32 = 9;
+pub const PAM_FAIL_DELAY: u32 = 10;
+pub const PAM_XDISPLAY: u32 = 11;
+pub const PAM_XAUTHDATA: u32 = 12;
+pub const PAM_AUTHTOK_TYPE: u32 = 13;
 pub const PAM_DATA_SILENT: u32 = 1073741824;
 pub const PAM_PROMPT_ECHO_OFF: u32 = 1;
 pub const PAM_PROMPT_ECHO_ON: u32 = 2;
 pub const PAM_ERROR_MSG: u32 = 3;
 pub const PAM_TEXT_INFO: u32 = 4;
+pub const PAM_RADIO_TYPE: u32 = 5;
+pub const PAM_BINARY_PROMPT: u32 = 7;
+pub const PAM_MAX_NUM_MSG: u32 = 32;
+pub const PAM_MAX_MSG_SIZE: u32 = 512;
 pub const PAM_MAX_RESP_SIZE: u32 = 512;
+pub const PAM_AUTHTOK_RECOVER_ERR: u32 = 21;
+pub const PAM_BP_MAX_LENGTH: u32 = 131072;
+pub const PAM_BPC_FALSE: u32 = 0;
+pub const PAM_BPC_TRUE: u32 = 1;
+pub const PAM_BPC_OK: u32 = 1;
+pub const PAM_BPC_SELECT: u32 = 2;
+pub const PAM_BPC_DONE: u32 = 3;
+pub const PAM_BPC_FAIL: u32 = 4;
+pub const PAM_BPC_GETENV: u32 = 65;
+pub const PAM_BPC_PUTENV: u32 = 66;
+pub const PAM_BPC_TEXT: u32 = 67;
+pub const PAM_BPC_ERROR: u32 = 68;
+pub const PAM_BPC_PROMPT: u32 = 69;
+pub const PAM_BPC_PASS: u32 = 70;
+pub const PAM_PRELIM_CHECK: u32 = 16384;
+pub const PAM_UPDATE_AUTHTOK: u32 = 8192;
+pub const PAM_DATA_REPLACE: u32 = 536870912;
+pub const PAM_MODUTIL_NGROUPS: u32 = 64;
 pub type pam_handle_t = u8;
-extern "C" {
-    pub fn pam_set_item(
-        pamh: *mut pam_handle_t,
-        item_type: libc::c_int,
-        item: *const libc::c_void,
-    ) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_get_item(
-        pamh: *const pam_handle_t,
-        item_type: libc::c_int,
-        item: *mut *const libc::c_void,
-    ) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_strerror(pamh: *mut pam_handle_t, errnum: libc::c_int) -> *const libc::c_char;
-}
-extern "C" {
-    pub fn pam_getenvlist(pamh: *mut pam_handle_t) -> *mut *mut libc::c_char;
-}
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct pam_message {
@@ -194,39 +211,12 @@ fn bindgen_test_layout_pam_conv() {
         )
     );
 }
-extern "C" {
-    pub fn pam_start(
-        service_name: *const libc::c_char,
-        user: *const libc::c_char,
-        pam_conversation: *const pam_conv,
-        pamh: *mut *mut pam_handle_t,
-    ) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_end(pamh: *mut pam_handle_t, pam_status: libc::c_int) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_authenticate(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_setcred(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_acct_mgmt(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_open_session(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_close_session(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
-}
-extern "C" {
-    pub fn pam_chauthtok(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
-}
 pub type __uid_t = libc::c_uint;
 pub type __gid_t = libc::c_uint;
 pub type gid_t = __gid_t;
 pub type uid_t = __uid_t;
+pub type __gnuc_va_list = __builtin_va_list;
+pub type va_list = __gnuc_va_list;
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct passwd {
@@ -589,6 +579,10 @@ fn bindgen_test_layout_pam_modutil_privs() {
         )
     );
 }
+pub const pam_modutil_redirect_fd_PAM_MODUTIL_IGNORE_FD: pam_modutil_redirect_fd = 0;
+pub const pam_modutil_redirect_fd_PAM_MODUTIL_PIPE_FD: pam_modutil_redirect_fd = 1;
+pub const pam_modutil_redirect_fd_PAM_MODUTIL_NULL_FD: pam_modutil_redirect_fd = 2;
+pub type pam_modutil_redirect_fd = libc::c_uint;
 pub type __builtin_va_list = [__va_list_tag; 1usize];
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
@@ -653,3 +647,218 @@ fn bindgen_test_layout___va_list_tag() {
         )
     );
 }
+extern "C" {
+    pub fn pam_set_item(
+        pamh: *mut pam_handle_t,
+        item_type: libc::c_int,
+        item: *const libc::c_void,
+    ) -> libc::c_int;
+    pub fn pam_get_item(
+        pamh: *const pam_handle_t,
+        item_type: libc::c_int,
+        item: *mut *const libc::c_void,
+    ) -> libc::c_int;
+    pub fn pam_strerror(pamh: *mut pam_handle_t, errnum: libc::c_int) -> *const libc::c_char;
+    pub fn pam_putenv(pamh: *mut pam_handle_t, name_value: *const libc::c_char) -> libc::c_int;
+    pub fn pam_getenv(pamh: *mut pam_handle_t, name: *const libc::c_char) -> *const libc::c_char;
+    pub fn pam_getenvlist(pamh: *mut pam_handle_t) -> *mut *mut libc::c_char;
+    pub fn pam_fail_delay(pamh: *mut pam_handle_t, musec_delay: libc::c_uint) -> libc::c_int;
+    pub fn pam_start(
+        service_name: *const libc::c_char,
+        user: *const libc::c_char,
+        pam_conversation: *const pam_conv,
+        pamh: *mut *mut pam_handle_t,
+    ) -> libc::c_int;
+    pub fn pam_start_confdir(
+        service_name: *const libc::c_char,
+        user: *const libc::c_char,
+        pam_conversation: *const pam_conv,
+        confdir: *const libc::c_char,
+        pamh: *mut *mut pam_handle_t,
+    ) -> libc::c_int;
+    pub fn pam_end(pamh: *mut pam_handle_t, pam_status: libc::c_int) -> libc::c_int;
+    pub fn pam_authenticate(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_setcred(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_acct_mgmt(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_open_session(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_close_session(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_chauthtok(pamh: *mut pam_handle_t, flags: libc::c_int) -> libc::c_int;
+    pub fn pam_vsyslog(
+        pamh: *const pam_handle_t,
+        priority: libc::c_int,
+        fmt: *const libc::c_char,
+        args: *mut __va_list_tag,
+    );
+    pub fn pam_syslog(
+        pamh: *const pam_handle_t,
+        priority: libc::c_int,
+        fmt: *const libc::c_char,
+        ...
+    );
+    pub fn pam_vprompt(
+        pamh: *mut pam_handle_t,
+        style: libc::c_int,
+        response: *mut *mut libc::c_char,
+        fmt: *const libc::c_char,
+        args: *mut __va_list_tag,
+    ) -> libc::c_int;
+    pub fn pam_prompt(
+        pamh: *mut pam_handle_t,
+        style: libc::c_int,
+        response: *mut *mut libc::c_char,
+        fmt: *const libc::c_char,
+        ...
+    ) -> libc::c_int;
+    pub fn pam_get_authtok(
+        pamh: *mut pam_handle_t,
+        item: libc::c_int,
+        authtok: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_get_authtok_noverify(
+        pamh: *mut pam_handle_t,
+        authtok: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_get_authtok_verify(
+        pamh: *mut pam_handle_t,
+        authtok: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_misc_paste_env(
+        pamh: *mut pam_handle_t,
+        user_env: *const *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_misc_drop_env(env: *mut *mut libc::c_char) -> *mut *mut libc::c_char;
+    pub fn pam_misc_setenv(
+        pamh: *mut pam_handle_t,
+        name: *const libc::c_char,
+        value: *const libc::c_char,
+        readonly: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_set_data(
+        pamh: *mut pam_handle_t,
+        module_data_name: *const libc::c_char,
+        data: *mut libc::c_void,
+        cleanup: ::std::option::Option<
+            unsafe extern "C" fn(
+                pamh: *mut pam_handle_t,
+                data: *mut libc::c_void,
+                error_status: libc::c_int,
+            ),
+        >,
+    ) -> libc::c_int;
+    pub fn pam_get_data(
+        pamh: *const pam_handle_t,
+        module_data_name: *const libc::c_char,
+        data: *mut *const libc::c_void,
+    ) -> libc::c_int;
+    pub fn pam_get_user(
+        pamh: *mut pam_handle_t,
+        user: *mut *const libc::c_char,
+        prompt: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_authenticate(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_setcred(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_acct_mgmt(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_open_session(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_close_session(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_sm_chauthtok(
+        pamh: *mut pam_handle_t,
+        flags: libc::c_int,
+        argc: libc::c_int,
+        argv: *mut *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_check_user_in_passwd(
+        pamh: *mut pam_handle_t,
+        user_name: *const libc::c_char,
+        file_name: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_getpwnam(pamh: *mut pam_handle_t, user: *const libc::c_char) -> *mut passwd;
+    pub fn pam_modutil_getpwuid(pamh: *mut pam_handle_t, uid: uid_t) -> *mut passwd;
+    pub fn pam_modutil_getgrnam(pamh: *mut pam_handle_t, group: *const libc::c_char) -> *mut group;
+    pub fn pam_modutil_getgrgid(pamh: *mut pam_handle_t, gid: gid_t) -> *mut group;
+    pub fn pam_modutil_getspnam(pamh: *mut pam_handle_t, user: *const libc::c_char) -> *mut spwd;
+    pub fn pam_modutil_user_in_group_nam_nam(
+        pamh: *mut pam_handle_t,
+        user: *const libc::c_char,
+        group: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_user_in_group_nam_gid(
+        pamh: *mut pam_handle_t,
+        user: *const libc::c_char,
+        group: gid_t,
+    ) -> libc::c_int;
+    pub fn pam_modutil_user_in_group_uid_nam(
+        pamh: *mut pam_handle_t,
+        user: uid_t,
+        group: *const libc::c_char,
+    ) -> libc::c_int;
+    pub fn pam_modutil_user_in_group_uid_gid(
+        pamh: *mut pam_handle_t,
+        user: uid_t,
+        group: gid_t,
+    ) -> libc::c_int;
+    pub fn pam_modutil_getlogin(pamh: *mut pam_handle_t) -> *const libc::c_char;
+    pub fn pam_modutil_read(
+        fd: libc::c_int,
+        buffer: *mut libc::c_char,
+        count: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_modutil_write(
+        fd: libc::c_int,
+        buffer: *const libc::c_char,
+        count: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_modutil_audit_write(
+        pamh: *mut pam_handle_t,
+        type_: libc::c_int,
+        message: *const libc::c_char,
+        retval: libc::c_int,
+    ) -> libc::c_int;
+    pub fn pam_modutil_drop_priv(
+        pamh: *mut pam_handle_t,
+        p: *mut pam_modutil_privs,
+        pw: *const passwd,
+    ) -> libc::c_int;
+    pub fn pam_modutil_regain_priv(
+        pamh: *mut pam_handle_t,
+        p: *mut pam_modutil_privs,
+    ) -> libc::c_int;
+    pub fn pam_modutil_sanitize_helper_fds(
+        pamh: *mut pam_handle_t,
+        redirect_stdin: pam_modutil_redirect_fd,
+        redirect_stdout: pam_modutil_redirect_fd,
+        redirect_stderr: pam_modutil_redirect_fd,
+    ) -> libc::c_int;
+    pub fn pam_modutil_search_key(
+        pamh: *mut pam_handle_t,
+        file_name: *const libc::c_char,
+        key: *const libc::c_char,
+    ) -> *mut libc::c_char;
+}