[Qemu-devel] [PATCH 1/2] linux-user: Fix target FS_IOC_GETFLAGS and FS_IOC_SETFLAGS numbers

[Peter Maydell <peter.maydell@linaro.org>]

We were defining TARGET_FS_IOC_GETFLAGS and TARGET_FS_IOC_SETFLAGS
using the host 'long' type in the size field, which meant that
they had the wrong values if the host and guest had different
sized longs. Switch to abi_long instead.

This fixes a bug where these ioctls don't work on 32-bit guests
on 64-bit hosts (and makes the LTP test 'setxattr03' pass
where it did not previously.)

Reported-by: pgndev <pgnet.dev@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 linux-user/syscall_defs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 40c5027..f7cc9f9 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -1101,8 +1101,8 @@ struct target_pollfd {
 /* Note that the ioctl numbers claim type "long" but the actual type
  * used by the kernel is "int".
  */
-#define TARGET_FS_IOC_GETFLAGS TARGET_IOR('f', 1, long)
-#define TARGET_FS_IOC_SETFLAGS TARGET_IOW('f', 2, long)
+#define TARGET_FS_IOC_GETFLAGS TARGET_IOR('f', 1, abi_long)
+#define TARGET_FS_IOC_SETFLAGS TARGET_IOW('f', 2, abi_long)
 
 #define TARGET_FS_IOC_FIEMAP TARGET_IOWR('f',11,struct fiemap)
 
-- 
2.7.4