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virtiofsd: Make fsync work even if only inode is passed in

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If caller has not sent file handle in request, then using inode, retrieve
the fd opened using O_PATH and use that to open file again and issue
fsync. This will be needed when dax_flush() calls fsync. At that time
we only have inode information (and not file).

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Vivek Goyal 2018-08-30 14:22:10 -04:00 • committed by Dr. David Alan Gilbert
parent 9776457ca6
commit 1b209805f8
2 changed files with 32 additions and 4 deletions
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6
tools/virtiofsd/fuse_lowlevel.c
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@ -1075,7 +1075,11 @@ static void do_fsync(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
fi.fh = arg->fh;
if (req->se->op.fsync) {
req->se->op.fsync(req, nodeid, datasync, &fi);
if (fi.fh == (uint64_t)-1) {
req->se->op.fsync(req, nodeid, datasync, NULL);
} else {
req->se->op.fsync(req, nodeid, datasync, &fi);
}
} else {
fuse_reply_err(req, ENOSYS);
}