[v1] linux-user: allow null `pathname` for statx()/fstatat()

[PATCH 0/1] linux-user: allow null `pathname` for statx()/fstatat()

Jean-Christian CÎRSTEA posted 1 patch 1 month, 2 weeks ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20251223172548.1847032-1-jean.christian.cirstea@gmail.com

Maintainers: Laurent Vivier <laurent@vivier.eu>

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linux-user/syscall.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

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[PATCH 0/1] linux-user: allow null `pathname` for statx()/fstatat()

Posted by Jean-Christian CÎRSTEA 1 month, 2 weeks ago

Since Linux 6.11, statx() and fstatat() syscalls accept a null `pathname`. Before
this patch, qemu-*-linux-user failed with EFAULT when `pathname` was specified
as NULL, even for Linux kernel hosts > 6.10. This patch fixes this issue by
checking whether `arg2` is 0. If so, don't return EFAULT, but instead perform
the appropiate syscall and let the host's kernel handle null `pathname`.

Jean-Christian CÎRSTEA (1):
  linux-user: allow null `pathname` for statx()/fstatat()

 linux-user/syscall.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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2.51.0