1 files changed, 96 insertions, 0 deletions
diff --git a/tests/stat/test_mknod.c b/tests/stat/test_mknod.c
new file mode 100644
index 00000000..4cff57d9
--- /dev/null
+++ b/tests/stat/test_mknod.c
@@ -0,0 +1,96 @@
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+void setup() {
+  mkdir("folder-readonly", 0555);
+}
+
+void cleanup() {
+  unlink("mknod-file");
+  unlink("mknod-device");
+  rmdir("folder");
+  rmdir("folder-readonly");
+}
+
+void test() {
+  int err;
+  struct stat s;
+
+  //
+  // mknod
+  // mknod is _extremely_ unportable for anything other
+  // than a FIFO. so, the tests are disabled when running
+  // natively as they'd be utterly inconsistent.
+  //
+#if EMSCRIPTEN
+
+  // mknod a folder
+  err = mknod("mknod-folder", S_IFDIR | 0777, 0);
+  assert(err);
+  assert(errno == EINVAL);
+
+  // mknod fifo
+  err = mknod("mknod-fifo", S_IFIFO | 0777, 0);
+  assert(err);
+  assert(errno == EPERM);
+
+  // mknod a file
+  err = mknod("mknod-file", S_IFREG | 0777, 0);
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("mknod-file", &s);
+  assert(S_ISREG(s.st_mode));
+
+  // mknod a character device
+  err = mknod("mknod-device", S_IFCHR | 0777, 123);
+#if USE_OLD_FS
+  assert(err);
+  assert(errno == EPERM);
+#else
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("mknod-device", &s);
+  assert(S_ISCHR(s.st_mode));
+#endif
+
+#endif
+
+  //
+  // mkdir
+  //
+  // can't mkdir in a readonly dir
+  err = mkdir("folder-readonly/subfolder", 0777);
+  assert(err);
+  assert(errno == EACCES);
+
+  // regular creation
+  err = mkdir("folder", 0777);
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("folder", &s);
+  assert(S_ISDIR(s.st_mode));
+
+  // try to re-create the same folder
+  err = mkdir("folder", 0777);
+  assert(err);
+  assert(errno == EEXIST);
+
+  puts("success");
+}
+
+int main() {
+  atexit(cleanup);
+  signal(SIGABRT, cleanup);
+  setup();
+  test();
+  return EXIT_SUCCESS;
+}
+\ No newline at end of file