diff options
| -rw-r--r-- | block/raw-win32.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/block/raw-win32.c b/block/raw-win32.c index 0c05c58c5a..ce207a3109 100644 --- a/block/raw-win32.c +++ b/block/raw-win32.c @@ -303,13 +303,24 @@ static int raw_truncate(BlockDriverState *bs, int64_t offset) { BDRVRawState *s = bs->opaque; LONG low, high; + DWORD dwPtrLow; low = offset; high = offset >> 32; - if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN)) - return -EIO; - if (!SetEndOfFile(s->hfile)) + + /* + * An error has occurred if the return value is INVALID_SET_FILE_POINTER + * and GetLastError doesn't return NO_ERROR. + */ + dwPtrLow = SetFilePointer(s->hfile, low, &high, FILE_BEGIN); + if (dwPtrLow == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) { + fprintf(stderr, "SetFilePointer error: %d\n", GetLastError()); + return -EIO; + } + if (SetEndOfFile(s->hfile) == 0) { + fprintf(stderr, "SetEndOfFile error: %d\n", GetLastError()); return -EIO; + } return 0; } |