diff options
| -rw-r--r-- | block/ssh.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/block/ssh.c b/block/ssh.c index 246a70d274..d7e7bf8dd2 100644 --- a/block/ssh.c +++ b/block/ssh.c @@ -716,6 +716,21 @@ static void ssh_close(BlockDriverState *bs) ssh_state_free(s); } +static int ssh_has_zero_init(BlockDriverState *bs) +{ + BDRVSSHState *s = bs->opaque; + /* Assume false, unless we can positively prove it's true. */ + int has_zero_init = 0; + + if (s->attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) { + if (s->attrs.permissions & LIBSSH2_SFTP_S_IFREG) { + has_zero_init = 1; + } + } + + return has_zero_init; +} + static void restart_coroutine(void *opaque) { Coroutine *co = opaque; @@ -1037,6 +1052,7 @@ static BlockDriver bdrv_ssh = { .bdrv_file_open = ssh_file_open, .bdrv_create = ssh_create, .bdrv_close = ssh_close, + .bdrv_has_zero_init = ssh_has_zero_init, .bdrv_co_readv = ssh_co_readv, .bdrv_co_writev = ssh_co_writev, .bdrv_getlength = ssh_getlength, |