linux-user: Add some random ioctls

Signed-off-by: NMarco A L Barbosa <malbarbo@gmail.com>
Reviewed-by: NLaurent Vivier <lvivier@redhat.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

linux-user/ioctls.h

@@ -173,6 +173,11 @@
   IOCTL(SIOCGSTAMP, IOC_R, MK_PTR(MK_STRUCT(STRUCT_timeval)))
   IOCTL(SIOCGSTAMPNS, IOC_R, MK_PTR(MK_STRUCT(STRUCT_timespec)))
 
+  IOCTL(RNDGETENTCNT, IOC_R, MK_PTR(TYPE_INT))
+  IOCTL(RNDADDTOENTCNT, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(RNDZAPENTCNT, 0, TYPE_NULL)
+  IOCTL(RNDCLEARPOOL, 0, TYPE_NULL)
+
   IOCTL(CDROMPAUSE, 0, TYPE_NULL)
   IOCTL(CDROMSTART, 0, TYPE_NULL)
   IOCTL(CDROMSTOP, 0, TYPE_NULL)

linux-user/syscall.c

@@ -59,6 +59,7 @@ int __clone2(int (*fn)(void *), void *child_stack_base,
 #include <linux/icmp.h>
 #include <linux/icmpv6.h>
 #include <linux/errqueue.h>
+#include <linux/random.h>
 #include "qemu-common.h"
 #ifdef CONFIG_TIMERFD
 #include <sys/timerfd.h>

linux-user/syscall_defs.h

@@ -1060,6 +1060,13 @@ struct target_pollfd {
 
 #define TARGET_SIOCGIWNAME     0x8B01          /* get name == wireless protocol */
 
+/* From <linux/random.h> */
+
+#define TARGET_RNDGETENTCNT    TARGET_IOR('R', 0x00, int)
+#define TARGET_RNDADDTOENTCNT  TARGET_IOW('R', 0x01, int)
+#define TARGET_RNDZAPENTCNT    TARGET_IO('R', 0x04)
+#define TARGET_RNDCLEARPOOL    TARGET_IO('R', 0x06)
+
 /* From <linux/fs.h> */
 
 #define TARGET_BLKROSET   TARGET_IO(0x12,93) /* set device read-only (0 = read-write) */