Squash commits for public release

userland/tests/mmaptest/main.c

@@ -0,0 +1,47 @@
+#include <sys/mman.h>
+#include <unistd.h>
+
+#define BUF_SIZE 512
+char buf[BUF_SIZE];
+
+void cat(int fd)
+{
+    int n = 0;
+    while ((n = read(fd, buf, sizeof(buf))) > 0) {
+        if (write(1, buf, n) != n) {
+            exit(1);
+        }
+    }
+}
+
+int main(int argc, char** argv)
+{
+    int fd, i;
+
+    if (argc <= 1) {
+        cat(0);
+        return 0;
+    }
+
+    fd = open(argv[1], 0);
+    if (fd < 0) {
+        return 1;
+    }
+
+    mmap_params_t mp;
+    mp.flags = MAP_PRIVATE;
+    mp.fd = fd;
+    mp.size = 4096;
+    mp.prot = PROT_READ;
+    char* file = (char*)mmap(&mp);
+    if (file) {
+        write(1, file, 30);
+    }
+
+    if (close(fd) == 0) {
+        write(1, "s", 1);
+        return 1;
+    }
+
+    return 0;
+}