1 files changed, 17 insertions, 0 deletions

diff --git a/coreutils/nproc.c b/coreutils/nproc.c
index df63bf57a..44408b5f5 100644
--- a/coreutils/nproc.c
+++ b/coreutils/nproc.c
@@ -28,6 +28,9 @@
 int nproc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int nproc_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
+#if ENABLE_PLATFORM_MINGW32
+        DWORD_PTR affinity, process_affinity, system_affinity;
+#endif
         int count = 0;
 #if ENABLE_LONG_OPTS
         int ignore = 0;
@@ -36,7 +39,10 @@ int nproc_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
                         "all\0"    No_argument       "\xff"
                         , &ignore
         );
+#endif
 
+#if !ENABLE_PLATFORM_MINGW32
+#if ENABLE_LONG_OPTS
         if (opts & (1 << 1)) {
                 DIR *cpusd = opendir("/sys/devices/system/cpu");
                 if (cpusd) {
@@ -61,6 +67,17 @@ int nproc_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
                 }
                 IF_FEATURE_CLEAN_UP(free(mask);)
         }
+#else /* ENABLE_PLATFORM_MINGW32 */
+        if (GetProcessAffinityMask(GetCurrentProcess(), &process_affinity,
+                                        &system_affinity)) {
+                affinity = IF_LONG_OPTS((opts & (1 << 1)) ? system_affinity :)
+                                                process_affinity;
+                while (affinity) {
+                        count += affinity & 1;
+                        affinity >>= 1;
+                }
+        }
+#endif /* ENABLE_PLATFORM_MINGW32 */
 
         IF_LONG_OPTS(count -= ignore;)
         if (count <= 0)