shared: make libmount_parse() non-inline

Back in e2857b3d87 I added this function
as static inline in order to avoid linking libmount into libshared.
Nevertheless, a dependency on libmount was added to libbasic in
9e7f941acb, and later moved to libshared
in 77c772f227. So the shenanigan with an
inline function is not useful, let's make it a normal function.

src/shared/libmount-util.c

@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdio.h>
+
+#include "libmount-util.h"
+
+int libmount_parse(
+                const char *path,
+                FILE *source,
+                struct libmnt_table **ret_table,
+                struct libmnt_iter **ret_iter) {
+
+        _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
+        _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
+        int r;
+
+        /* Older libmount seems to require this. */
+        assert(!source || path);
+
+        table = mnt_new_table();
+        iter = mnt_new_iter(MNT_ITER_FORWARD);
+        if (!table || !iter)
+                return -ENOMEM;
+
+        /* If source or path are specified, we use on the functions which ignore utab.
+         * Only if both are empty, we use mnt_table_parse_mtab(). */
+
+        if (source)
+                r = mnt_table_parse_stream(table, source, path);
+        else if (path)
+                r = mnt_table_parse_file(table, path);
+        else
+                r = mnt_table_parse_mtab(table, NULL);
+        if (r < 0)
+                return r;
+
+        *ret_table = TAKE_PTR(table);
+        *ret_iter = TAKE_PTR(iter);
+        return 0;
+}

src/shared/libmount-util.h

@@ -1,8 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include <stdio.h>
-
 /* This needs to be after sys/mount.h */
 #include <libmount.h>
 
@@ -11,37 +9,8 @@
 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct libmnt_table*, mnt_free_table, NULL);
 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct libmnt_iter*, mnt_free_iter, NULL);
 
-static inline int libmount_parse(
+int libmount_parse(
                 const char *path,
                 FILE *source,
                 struct libmnt_table **ret_table,
-                struct libmnt_iter **ret_iter) {
-
-        _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
-        _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
-        int r;
-
-        /* Older libmount seems to require this. */
-        assert(!source || path);
-
-        table = mnt_new_table();
-        iter = mnt_new_iter(MNT_ITER_FORWARD);
-        if (!table || !iter)
-                return -ENOMEM;
-
-        /* If source or path are specified, we use on the functions which ignore utab.
-         * Only if both are empty, we use mnt_table_parse_mtab(). */
-
-        if (source)
-                r = mnt_table_parse_stream(table, source, path);
-        else if (path)
-                r = mnt_table_parse_file(table, path);
-        else
-                r = mnt_table_parse_mtab(table, NULL);
-        if (r < 0)
-                return r;
-
-        *ret_table = TAKE_PTR(table);
-        *ret_iter = TAKE_PTR(iter);
-        return 0;
-}
+                struct libmnt_iter **ret_iter);

src/shared/meson.build

@@ -193,6 +193,7 @@ shared_sources = files(
         'libcrypt-util.h',
         'libfido2-util.c',
         'libfido2-util.h',
+        'libmount-util.c',
         'libmount-util.h',
         'linux/auto_dev-ioctl.h',
         'linux/bpf.h',