Files
qemu/linux-user
Peter Maydell 422bf25df1 linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0
Linux returns success if pwrite64() or pread64() are called with a
zero length NULL buffer, but QEMU was returning -TARGET_EFAULT.

This is the same bug that we fixed in commit 58cfa6c2e6
for the write syscall, and long before that in 38d840e679
for the read syscall.

Fixes: https://bugs.launchpad.net/qemu/+bug/1810433

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190108184900.9654-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
(cherry picked from commit 2bd3f8998e)
*drop functional dep. on 2852aafd9d
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2019-04-01 20:36:21 -05:00
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