#ifndef FIO_OS_H
#define FIO_OS_H
+#include <sys/types.h>
+#include <unistd.h>
+
#if defined(__linux__)
#include "os-linux.h"
#elif defined(__FreeBSD__)
#include "os-freebsd.h"
#elif defined(__sun__)
#include "os-solaris.h"
+#elif defined(__APPLE__)
+#include "os-mac.h"
#else
#error "unsupported os"
#endif
#endif
}
+#ifdef FIO_USE_GENERIC_BDEV_SIZE
+static inline int blockdev_size(int fd, unsigned long long *bytes)
+{
+ off_t end;
+
+ *bytes = 0;
+
+ end = lseek(fd, 0, SEEK_END);
+ if (end < 0)
+ return errno;
+
+ *bytes = end;
+ return 0;
+}
+#endif
+
+#ifdef FIO_USE_GENERIC_RAND
+typedef unsigned int os_random_state_t;
+
+static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
+{
+ srand(seed);
+}
+
+static inline long os_random_long(os_random_state_t *rs)
+{
+ long val;
+
+ val = rand_r(rs);
+ return val;
+}
+#endif
+
#endif