From: Nguyen Dinh Phi <phind.uet@gmail.com>
qemu_ftruncate64() is a general-purpose utility function that may be
used outside of the block layer. Move it to util/oslib-win32.c where
other Windows-specific utility functions reside.
Signed-off-by: Nguyen Dinh Phi <phind.uet@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20251218085446.462827-3-phind.uet@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
block/file-win32.c | 32 --------------------------------
util/oslib-win32.c | 33 +++++++++++++++++++++++++++++++++
2 files changed, 33 insertions(+), 32 deletions(-)
diff --git a/block/file-win32.c b/block/file-win32.c
index 0efb609e1d5..b00039bf945 100644
--- a/block/file-win32.c
+++ b/block/file-win32.c
@@ -170,38 +170,6 @@ static BlockAIOCB *paio_submit(BlockDriverState *bs, HANDLE hfile,
return thread_pool_submit_aio(aio_worker, acb, cb, opaque);
}
-int qemu_ftruncate64(int fd, int64_t length)
-{
- LARGE_INTEGER li;
- DWORD dw;
- LONG high;
- HANDLE h;
- BOOL res;
-
- if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0)
- return -1;
-
- h = (HANDLE)_get_osfhandle(fd);
-
- /* get current position, ftruncate do not change position */
- li.HighPart = 0;
- li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
- if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
- return -1;
- }
-
- high = length >> 32;
- dw = SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN);
- if (dw == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
- return -1;
- }
- res = SetEndOfFile(h);
-
- /* back to old position */
- SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN);
- return res ? 0 : -1;
-}
-
static int set_sparse(int fd)
{
DWORD returned;
diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index 839b8a4170e..5f3e8f4d980 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -899,3 +899,36 @@ int qemu_shm_alloc(size_t size, Error **errp)
error_setg(errp, "Shared memory is not supported.");
return -1;
}
+
+int qemu_ftruncate64(int fd, int64_t length)
+{
+ LARGE_INTEGER li;
+ DWORD dw;
+ LONG high;
+ HANDLE h;
+ BOOL res;
+
+ if ((GetVersion()&0x80000000UL) && (length >> 32) != 0) {
+ return -1;
+ }
+
+ h = (HANDLE)_get_osfhandle(fd);
+
+ /* get current position, ftruncate do not change position */
+ li.HighPart = 0;
+ li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
+ if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
+ return -1;
+ }
+
+ high = length >> 32;
+ dw = SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN);
+ if (dw == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
+ return -1;
+ }
+ res = SetEndOfFile(h);
+
+ /* back to old position */
+ SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN);
+ return res ? 0 : -1;
+}
--
2.52.0