bcache in userspace; userspace fsck

1 files changed, 31 insertions, 0 deletions

diff --git a/include/linux/random.h b/include/linux/random.h
new file mode 100644
index 00000000..bd3dc61b
--- /dev/null
+++ b/include/linux/random.h
@@ -0,0 +1,31 @@
+/*
+ * include/linux/random.h
+ *
+ * Include file for the random number generator.
+ */
+#ifndef _LINUX_RANDOM_H
+#define _LINUX_RANDOM_H
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <linux/bug.h>
+
+static inline int getrandom(void *buf, size_t buflen, unsigned int flags)
+{
+	 return syscall(SYS_getrandom, buf, buflen, flags);
+}
+
+static inline void get_random_bytes(void *buf, int nbytes)
+{
+	BUG_ON(getrandom(buf, nbytes, 0) != nbytes);
+}
+
+static inline int get_random_int(void)
+{
+	int v;
+
+	get_random_bytes(&v, sizeof(v));
+	return v;
+}
+
+#endif /* _LINUX_RANDOM_H */