diff options
| -rw-r--r-- | block-raw-posix.c | 13 | ||||
| -rw-r--r-- | block-raw-win32.c | 4 |
2 files changed, 15 insertions, 2 deletions
diff --git a/block-raw-posix.c b/block-raw-posix.c index 696128b80b..1a1a1781bc 100644 --- a/block-raw-posix.c +++ b/block-raw-posix.c @@ -361,7 +361,12 @@ static int raw_pread(BlockDriverState *bs, int64_t offset, static int raw_read(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors) { - return raw_pread(bs, sector_num * 512, buf, (uint64_t)nb_sectors * 512); + int ret; + + ret = raw_pread(bs, sector_num * 512, buf, nb_sectors * 512); + if (ret == (nb_sectors * 512)) + ret = 0; + return ret; } /* @@ -445,7 +450,11 @@ static int raw_pwrite(BlockDriverState *bs, int64_t offset, static int raw_write(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors) { - return raw_pwrite(bs, sector_num * 512, buf, (uint64_t)nb_sectors * 512); + int ret; + ret = raw_pwrite(bs, sector_num * 512, buf, nb_sectors * 512); + if (ret == (nb_sectors * 512)) + ret = 0; + return ret; } #ifdef CONFIG_AIO diff --git a/block-raw-win32.c b/block-raw-win32.c index 8564a72762..d034b4a069 100644 --- a/block-raw-win32.c +++ b/block-raw-win32.c @@ -145,6 +145,8 @@ static int raw_read(BlockDriverState *bs, int64_t sector_num, #endif return ret_count; } + if (ret_count == count) + ret_count = 0; return ret_count; } @@ -171,6 +173,8 @@ static int raw_write(BlockDriverState *bs, int64_t sector_num, #endif return ret_count; } + if (ret_count == count) + ret_count = 0; return ret_count; } |