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[PULL,08/10] linux-user: Fix target FS_IOC_GETFLAGS and FS_IOC_SETFLAGS numbers

Message ID 1847b7ba7015a7448079c2d8fd7187726c33c707.1508329282.git.riku.voipio@linaro.org
State Accepted
Commit 1847b7ba7015a7448079c2d8fd7187726c33c707
Headers show
Series linux-user update for 2.11 | expand

Commit Message

Riku Voipio Oct. 18, 2017, 12:33 p.m. UTC 
From: 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>

Reviewed-by: Laurent Vivier <laurent@vivier.eu>

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>

---
 linux-user/syscall_defs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.14.2
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Patch

diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 6e2287e918..447915cf80 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)