There are only three call sites, and strnlen() is available on all
supported platforms (POSIX.1-2008, Windows via UCRT, MinGW). Remove
the hand-rolled wrapper and use the standard function directly.
While here, align bsd-user/uaccess.c to use size_t for max_len/len,
matching linux-user/uaccess.c and eliminating a signed/unsigned mismatch.
Also remove the stale qemu_strnlen() entry from docs/devel/style.rst.
Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Bin Guo <guobin@linux.alibaba.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-ID: <20260530062816.59206-1-guobin@linux.alibaba.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
66ac993bda