Emscripten doesn't provide copy_file_range implementation but it declares
this function in its headers. Meson correctly detects the missing
implementation and unsets HAVE_COPY_FILE_RANGE. However, the stub defined in
file-posix.c causes a type conflict with the declaration from Emscripten
during compilation.
To fix this error, this commit updates the stub implementation in
file-posix.c to exactly match the declaration in Emscripten's headers. The
manpage also aligns with this signature.
Signed-off-by: Kohei Tokunaga <ktokunaga.m...@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
---
block/file-posix.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 69257c0891..2758f31844 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -2015,8 +2015,8 @@ static int handle_aiocb_write_zeroes_unmap(void *opaque)
}
#ifndef HAVE_COPY_FILE_RANGE
-static off_t copy_file_range(int in_fd, off_t *in_off, int out_fd,
- off_t *out_off, size_t len, unsigned int flags)
+ssize_t copy_file_range(int in_fd, off_t *in_off, int out_fd,
+ off_t *out_off, size_t len, unsigned int flags)
{
#ifdef __NR_copy_file_range
return syscall(__NR_copy_file_range, in_fd, in_off, out_fd,
--
2.43.0
