diff options
Diffstat (limited to 'block/raw-win32.c')
| -rw-r--r-- | block/raw-win32.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/block/raw-win32.c b/block/raw-win32.c index 56bd7195a..91067e759 100644 --- a/block/raw-win32.c +++ b/block/raw-win32.c @@ -213,6 +213,31 @@ static int64_t raw_getlength(BlockDriverState *bs) return l.QuadPart; } +static int64_t raw_get_allocated_file_size(BlockDriverState *bs) +{ + typedef DWORD (WINAPI * get_compressed_t)(const char *filename, + DWORD * high); + get_compressed_t get_compressed; + struct _stati64 st; + const char *filename = bs->filename; + /* WinNT support GetCompressedFileSize to determine allocate size */ + get_compressed = + (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), + "GetCompressedFileSizeA"); + if (get_compressed) { + DWORD high, low; + low = get_compressed(filename, &high); + if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) { + return (((int64_t) high) << 32) + low; + } + } + + if (_stati64(filename, &st) < 0) { + return -1; + } + return st.st_size; +} + static int raw_create(const char *filename, QEMUOptionParameter *options) { int fd; @@ -257,6 +282,8 @@ static BlockDriver bdrv_file = { .bdrv_write = raw_write, .bdrv_truncate = raw_truncate, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, .create_options = raw_create_options, }; @@ -419,6 +446,8 @@ static BlockDriver bdrv_host_device = { .bdrv_read = raw_read, .bdrv_write = raw_write, .bdrv_getlength = raw_getlength, + .bdrv_get_allocated_file_size + = raw_get_allocated_file_size, }; static void bdrv_file_init(void) |