diff options
Diffstat (limited to 'blockdev-nbd.c')
| -rw-r--r-- | blockdev-nbd.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/blockdev-nbd.c b/blockdev-nbd.c index c76d5416b9..d73ac1b026 100644 --- a/blockdev-nbd.c +++ b/blockdev-nbd.c @@ -146,6 +146,7 @@ void qmp_nbd_server_add(const char *device, bool has_name, const char *name, BlockDriverState *bs = NULL; BlockBackend *on_eject_blk; NBDExport *exp; + int64_t len; if (!nbd_server) { error_setg(errp, "NBD server not running"); @@ -168,6 +169,13 @@ void qmp_nbd_server_add(const char *device, bool has_name, const char *name, return; } + len = bdrv_getlength(bs); + if (len < 0) { + error_setg_errno(errp, -len, + "Failed to determine the NBD export's length"); + return; + } + if (!has_writable) { writable = false; } @@ -175,7 +183,7 @@ void qmp_nbd_server_add(const char *device, bool has_name, const char *name, writable = false; } - exp = nbd_export_new(bs, 0, -1, name, NULL, bitmap, + exp = nbd_export_new(bs, 0, len, name, NULL, bitmap, writable ? 0 : NBD_FLAG_READ_ONLY, NULL, false, on_eject_blk, errp); if (!exp) { |