[PATCH v2 2/2] util: Move qemu_ftruncate64 from block/file-win32.c to oslib-win32.c

[phind . uet]

From: Nguyen Dinh Phi <phind....@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....@gmail.com>
---
 block/file-win32.c | 32 --------------------------------
 util/oslib-win32.c | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 32 deletions(-)

diff --git a/block/file-win32.c b/block/file-win32.c
index af9aea631c..8a44853389 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 839b8a4170..766c602172 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -899,3 +899,37 @@ 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;
+}
+
-- 
2.43.0