TODO

@@ -228,6 +228,8 @@ Features:
 
 * systemd-analyze netif that explains predictable interface (or networkctl)
 
+* port selinux code from mallinfo() to mallinfo2() once added to glibc
+
 * Add service setting to run a service within the specified VRF. i.e. do the
   equivalent of "ip vrf exec".
 

meson.build

@@ -555,7 +555,6 @@ foreach ident : [
                                  #include <signal.h>
                                  #include <sys/wait.h>'''],
         ['mallinfo',          '''#include <malloc.h>'''],
-        ['mallinfo2',         '''#include <malloc.h>'''],
         ['execveat',          '''#include <unistd.h>'''],
         ['close_range',       '''#include <unistd.h>'''],
         ['epoll_pwait2',      '''#include <sys/epoll.h>'''],

src/basic/selinux-util.c

@@ -84,24 +84,15 @@ void mac_selinux_retest(void) {
 }
 
 #if HAVE_SELINUX
-#  if HAVE_MALLINFO2
-#    define HAVE_GENERIC_MALLINFO 1
-typedef struct mallinfo2 generic_mallinfo;
-static generic_mallinfo generic_mallinfo_get(void) {
-        return mallinfo2();
-}
-#  elif HAVE_MALLINFO
-#    define HAVE_GENERIC_MALLINFO 1
-typedef struct mallinfo generic_mallinfo;
-static generic_mallinfo generic_mallinfo_get(void) {
-        /* glibc has deprecated mallinfo(), let's suppress the deprecation warning if mallinfo2() doesn't
-         * exist yet. */
+#  if HAVE_MALLINFO
+static struct mallinfo mallinfo_nowarn(void) {
+        /* glibc has deprecated mallinfo(), but the replacement malloc_info() returns an XML blob ;=[ */
 DISABLE_WARNING_DEPRECATED_DECLARATIONS
         return mallinfo();
 REENABLE_WARNING
 }
 #  else
-#    define HAVE_GENERIC_MALLINFO 0
+#    warning "mallinfo() is missing, add mallinfo2() supported instead."
 #  endif
 
 static int open_label_db(void) {
@@ -109,8 +100,8 @@ static int open_label_db(void) {
         usec_t before_timestamp, after_timestamp;
         char timespan[FORMAT_TIMESPAN_MAX];
 
-#  if HAVE_GENERIC_MALLINFO
-        generic_mallinfo before_mallinfo = generic_mallinfo_get();
+#  if HAVE_MALLINFO
+        struct mallinfo before_mallinfo = mallinfo_nowarn();
 #  endif
         before_timestamp = now(CLOCK_MONOTONIC);
 
@@ -119,10 +110,10 @@ static int open_label_db(void) {
                 return log_enforcing_errno(errno, "Failed to initialize SELinux labeling handle: %m");
 
         after_timestamp = now(CLOCK_MONOTONIC);
-#  if HAVE_GENERIC_MALLINFO
-        generic_mallinfo after_mallinfo = generic_mallinfo_get();
-        size_t l = LESS_BY((size_t) after_mallinfo.uordblks, (size_t) before_mallinfo.uordblks);
-        log_debug("Successfully loaded SELinux database in %s, size on heap is %zuK.",
+#  if HAVE_MALLINFO
+        struct mallinfo after_mallinfo = mallinfo_nowarn();
+        int l = after_mallinfo.uordblks > before_mallinfo.uordblks ? after_mallinfo.uordblks - before_mallinfo.uordblks : 0;
+        log_debug("Successfully loaded SELinux database in %s, size on heap is %iK.",
                   format_timespan(timespan, sizeof(timespan), after_timestamp - before_timestamp, 0),
                   DIV_ROUND_UP(l, 1024));
 #  else