diff options
| author | Li Feng <fengli@smartx.com> | 2020-12-07 19:44:06 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-12-11 17:52:40 +0100 |
| commit | eb43ea16dcb7e6ab01db321b5edac3e593556e7d (patch) | |
| tree | bff36c40fd24a15515c6596a5f241a45c2d59ba6 | |
| parent | e6c7964769f68c36e2b20c26f5bf4da91dfa0cac (diff) | |
file-posix: check the use_lock before setting the file lock
The scenario is that when accessing a volume on an NFS filesystem
without supporting the file lock, Qemu will complain "Failed to lock
byte 100", even when setting the file.locking = off.
We should do file lock related operations only when the file.locking is
enabled, otherwise, the syscall of 'fcntl' will return non-zero.
Signed-off-by: Li Feng <fengli@smartx.com>
Message-Id: <1607341446-85506-1-git-send-email-fengli@smartx.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block/file-posix.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index d5fd1dbcd2..806764f7e3 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -3104,7 +3104,7 @@ static int raw_check_perm(BlockDriverState *bs, uint64_t perm, uint64_t shared, } /* Copy locks to the new fd */ - if (s->perm_change_fd) { + if (s->perm_change_fd && s->use_lock) { ret = raw_apply_lock_bytes(NULL, s->perm_change_fd, perm, ~shared, false, errp); if (ret < 0) { |