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This commit is contained in:
Vitaliy Filippov
2024-05-15 11:06:01 +03:00
parent 44692d148a
commit c79b38bd26
219 changed files with 465 additions and 433 deletions
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src/nfs/nfs_kv_setattr.cpp
+204
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// Copyright (c) Vitaliy Filippov, 2019+
// License: VNPL-1.1 (see README.md for details)
//
// NFS proxy over VitastorKV database - SETATTR
#include <sys/time.h>
#include "nfs_proxy.h"
#include "nfs_kv.h"
#include "cli.h"
struct nfs_kv_setattr_state
{
nfs_client_t *self = NULL;
rpc_op_t *rop = NULL;
uint64_t ino = 0;
uint64_t old_size = 0, new_size = 0;
std::string expected_ctime;
json11::Json::object set_attrs;
int res = 0, cas_res = 0;
std::string ientry_text;
json11::Json ientry;
json11::Json::object new_attrs;
std::function<void(int)> cb;
};
static void nfs_kv_continue_setattr(nfs_kv_setattr_state *st, int state)
{
// FIXME: NFS client does a lot of setattr calls, so maybe process them asynchronously
if (state == 0) {}
else if (state == 1) goto resume_1;
else if (state == 2) goto resume_2;
else if (state == 3) goto resume_3;
else
{
fprintf(stderr, "BUG: invalid state in nfs_kv_continue_setattr()");
abort();
}
st->self->parent->kvfs->touch_queue.erase(st->ino);
resume_0:
kv_read_inode(st->self->parent, st->ino, [st](int res, const std::string & value, json11::Json attrs)
{
st->res = res;
st->ientry_text = value;
st->ientry = attrs;
nfs_kv_continue_setattr(st, 1);
});
return;
resume_1:
if (st->res < 0)
{
auto cb = std::move(st->cb);
cb(st->res);
return;
}
if (st->ientry["type"].string_value() != "file" &&
st->ientry["type"].string_value() != "" &&
!st->set_attrs["size"].is_null())
{
auto cb = std::move(st->cb);
cb(-EINVAL);
return;
}
if (st->expected_ctime != "")
{
auto actual_ctime = (st->ientry["ctime"].is_null() ? st->ientry["mtime"] : st->ientry["ctime"]);
if (actual_ctime != st->expected_ctime)
{
auto cb = std::move(st->cb);
cb(NFS3ERR_NOT_SYNC);
return;
}
}
// Now we can update it
st->new_attrs = st->ientry.object_items();
st->old_size = st->ientry["size"].uint64_value();
for (auto & kv: st->set_attrs)
{
if (kv.first == "size")
{
st->new_size = kv.second.uint64_value();
}
st->new_attrs[kv.first] = kv.second;
}
st->new_attrs.erase("verf");
st->new_attrs["ctime"] = nfstime_now_str();
st->self->parent->db->set(kv_inode_key(st->ino), json11::Json(st->new_attrs).dump(), [st](int res)
{
st->res = res;
nfs_kv_continue_setattr(st, 2);
}, [st](int res, const std::string & cas_value)
{
st->cas_res = res;
return (res == 0 || res == -ENOENT && st->ino == KV_ROOT_INODE) && cas_value == st->ientry_text;
});
return;
resume_2:
if (st->cas_res == -ENOENT)
{
st->res = -ENOENT;
}
if (st->res == -EAGAIN)
{
// Retry
goto resume_0;
}
if (st->res < 0)
{
fprintf(stderr, "Failed to update inode %ju: %s (code %d)\n", st->ino, strerror(-st->res), st->res);
auto cb = std::move(st->cb);
cb(st->res);
return;
}
if (!st->set_attrs["size"].is_null() &&
st->ientry["size"].uint64_value() > st->set_attrs["size"].uint64_value() &&
!st->ientry["shared_ino"].uint64_value())
{
// Delete extra data when downsizing
st->self->parent->cmd->loop_and_wait(st->self->parent->cmd->start_rm_data(json11::Json::object {
{ "inode", INODE_NO_POOL(st->ino) },
{ "pool", (uint64_t)INODE_POOL(st->ino) },
{ "min_offset", st->set_attrs["size"].uint64_value() },
}), [st](const cli_result_t & r)
{
if (r.err)
{
fprintf(stderr, "Failed to truncate inode %ju: %s (code %d)\n",
st->ino, r.text.c_str(), r.err);
}
st->res = r.err;
nfs_kv_continue_setattr(st, 3);
});
return;
}
resume_3:
auto cb = std::move(st->cb);
cb(st->res);
}
int kv_nfs3_setattr_proc(void *opaque, rpc_op_t *rop)
{
nfs_kv_setattr_state *st = new nfs_kv_setattr_state;
st->self = (nfs_client_t*)opaque;
st->rop = rop;
auto args = (SETATTR3args*)rop->request;
auto reply = (SETATTR3res*)rop->reply;
std::string fh = args->object;
if (!kv_fh_valid(fh))
{
*reply = (SETATTR3res){ .status = NFS3ERR_INVAL };
rpc_queue_reply(rop);
delete st;
return 0;
}
st->ino = kv_fh_inode(fh);
if (args->guard.check)
st->expected_ctime = nfstime_to_str(args->guard.obj_ctime);
if (args->new_attributes.size.set_it)
st->set_attrs["size"] = args->new_attributes.size.size;
if (args->new_attributes.mode.set_it)
st->set_attrs["mode"] = (uint64_t)args->new_attributes.mode.mode;
if (args->new_attributes.uid.set_it)
st->set_attrs["uid"] = (uint64_t)args->new_attributes.uid.uid;
if (args->new_attributes.gid.set_it)
st->set_attrs["gid"] = (uint64_t)args->new_attributes.gid.gid;
if (args->new_attributes.atime.set_it == SET_TO_SERVER_TIME)
st->set_attrs["atime"] = nfstime_now_str();
else if (args->new_attributes.atime.set_it == SET_TO_CLIENT_TIME)
st->set_attrs["atime"] = nfstime_to_str(args->new_attributes.atime.atime);
if (args->new_attributes.mtime.set_it == SET_TO_SERVER_TIME)
st->set_attrs["mtime"] = nfstime_now_str();
else if (args->new_attributes.mtime.set_it == SET_TO_CLIENT_TIME)
st->set_attrs["mtime"] = nfstime_to_str(args->new_attributes.mtime.mtime);
if (st->self->parent->trace)
fprintf(stderr, "[%d] SETATTR %ju ATTRS %s\n", st->self->nfs_fd, st->ino, json11::Json(st->set_attrs).dump().c_str());
st->cb = [st](int res)
{
auto reply = (SETATTR3res*)st->rop->reply;
if (res < 0)
{
*reply = (SETATTR3res){
.status = vitastor_nfs_map_err(res),
};
}
else
{
*reply = (SETATTR3res){
.status = NFS3_OK,
.resok = (SETATTR3resok){
.obj_wcc = (wcc_data){
.after = (post_op_attr){
.attributes_follow = 1,
.attributes = get_kv_attributes(st->self, st->ino, st->new_attrs),
},
},
},
};
}
rpc_queue_reply(st->rop);
delete st;
};
nfs_kv_continue_setattr(st, 0);
return 1;
}