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vitastor/src/nfs_conn.cpp

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// Copyright (c) Vitaliy Filippov, 2019+
// License: VNPL-1.1 (see README.md for details)
//
// NFS connection handler for NFS proxy
#include <sys/time.h>
#include "libnfs-raw-mount.h"
#include "libnfs-raw-nfs.h"
#include "base64.h"
#include "nfs_proxy.h"
static unsigned len_pad4(unsigned len)
{
return len + (len&3 ? 4-(len&3) : 0);
}
static int nfs3_null_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
rpc_send_reply(rpc, call, NULL, (zdrproc_t)zdr_void, 0);
return 0;
}
static fattr3 get_dir_attributes(nfs_client_t *self, std::string dir)
{
return (fattr3){
.type = NF3DIR,
.mode = 0755,
.nlink = 1,
.uid = 0,
.gid = 0,
.size = 4096,
.used = 4096,
.rdev = (specdata3){ 0 },
.fsid = self->parent->fsid,
.fileid = dir == "" ? 1 : self->parent->dir_ids.at(dir),
//.atime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
//.mtime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
//.ctime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
};
}
static int nfs3_getattr_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
GETATTR3args *args = (GETATTR3args*)call->body.cbody.args;
GETATTR3res reply;
std::string dirhash = std::string(args->object.data.data_val, args->object.data.data_len);
bool is_dir = false;
std::string dir;
if (dirhash == "roothandle")
is_dir = true;
else
{
auto dir_it = self->parent->dir_by_hash.find(dirhash);
if (dir_it != self->parent->dir_by_hash.end())
{
is_dir = true;
dir = dir_it->second;
}
}
if (is_dir)
{
// Directory info
reply.status = NFS3_OK;
reply.GETATTR3res_u.resok.obj_attributes = get_dir_attributes(self, dir);
}
else
{
uint64_t inode_num;
auto inode_num_it = self->parent->inode_by_hash.find(dirhash);
if (inode_num_it != self->parent->inode_by_hash.end())
inode_num = inode_num_it->second;
auto inode_it = self->parent->cli->st_cli.inode_config.find(inode_num);
if (inode_it != self->parent->cli->st_cli.inode_config.end())
{
// File info
auto & inode_cfg = inode_it->second;
reply.status = NFS3_OK;
reply.GETATTR3res_u.resok.obj_attributes = {
.type = NF3REG,
.mode = 0644,
.nlink = 1,
.uid = 0,
.gid = 0,
.size = inode_cfg.size,
.used = inode_cfg.size,
.rdev = (specdata3){ 0 },
.fsid = self->parent->fsid,
.fileid = inode_it->first,
//.atime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
//.mtime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
//.ctime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
};
}
else
{
// File not exists
reply.status = NFS3ERR_NOENT;
}
}
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_GETATTR3res, sizeof(GETATTR3res));
return 0;
}
static int nfs3_setattr_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
SETATTR3args *args = (SETATTR3args*)call->body.cbody.args;
SETATTR3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_SETATTR3res, sizeof(SETATTR3res));
return 0;
}
static int nfs3_lookup_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
LOOKUP3args *args = (LOOKUP3args*)call->body.cbody.args;
LOOKUP3res reply;
std::string dirhash = std::string(args->what.dir.data.data_val, args->what.dir.data.data_len);
std::string dir;
if (dirhash != "roothandle")
{
auto dir_it = self->parent->dir_by_hash.find(dirhash);
if (dir_it != self->parent->dir_by_hash.end())
dir = dir_it->second;
}
std::string full_name = self->parent->name_prefix;
if (dir != "")
{
full_name += dir+"/";
}
full_name += std::string(args->what.name);
for (auto & ic: self->parent->cli->st_cli.inode_config)
{
if (ic.second.name == full_name)
{
std::string fh = "S"+base64_encode(sha256(full_name.substr(self->parent->name_prefix.size())));
reply.status = NFS3_OK;
reply.LOOKUP3res_u.resok.object.data.data_len = fh.size();
reply.LOOKUP3res_u.resok.object.data.data_val = (char*)fh.c_str();
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_LOOKUP3res, sizeof(LOOKUP3res));
return 0;
}
}
reply.status = NFS3ERR_NOENT;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_LOOKUP3res, sizeof(LOOKUP3res));
return 0;
}
static int nfs3_access_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
ACCESS3args *args = (ACCESS3args*)call->body.cbody.args;
ACCESS3res reply = {
.status = NFS3_OK,
.ACCESS3res_u = { .resok = {
.access = args->access,
} },
};
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_ACCESS3res, sizeof(ACCESS3res));
return 0;
}
static int nfs3_readlink_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
READLINK3args *args = (READLINK3args*)call->body.cbody.args;
READLINK3res reply = {};
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READLINK3res, sizeof(READLINK3res));
return 0;
}
#define MAX_REQUEST_SIZE 128*1024*1024
static int nfs3_read_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
READ3args *args = (READ3args*)call->body.cbody.args;
std::string handle = std::string(args->file.data.data_val, args->file.data.data_len);
auto ino_it = self->parent->inode_by_hash.find(handle);
if (ino_it == self->parent->inode_by_hash.end())
{
READ3res reply = { .status = NFS3ERR_NOENT };
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READ3res, sizeof(READ3res));
return 0;
}
if (args->count > MAX_REQUEST_SIZE)
{
READ3res reply = { .status = NFS3ERR_INVAL };
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READ3res, sizeof(READ3res));
return 0;
}
void *buf = malloc_or_die(args->count);
cluster_op_t *op = new cluster_op_t;
op->opcode = OSD_OP_READ;
op->inode = ino_it->second;
op->offset = args->offset;
op->len = args->count;
op->iov.push_back(buf, args->count);
op->callback = [rpc, call](cluster_op_t *op)
{
void *buf = op->iov.buf[0].iov_base;
READ3res reply = {};
if (op->retval != op->len)
{
if (op->retval == -EINVAL)
reply.status = NFS3ERR_INVAL;
else if (op->retval == -ENOSPC)
reply.status = NFS3ERR_NOSPC;
else
reply.status = NFS3ERR_IO;
}
else
{
reply.status = NFS3_OK;
auto & reply_ok = reply.READ3res_u.resok;
reply_ok.count = op->retval;
reply_ok.eof = FALSE;
reply_ok.data.data_len = reply_ok.count;
reply_ok.data.data_val = (char*)buf;
}
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READ3res, sizeof(READ3res));
delete op;
free(buf);
};
self->parent->cli->execute(op);
return 0;
}
static int nfs3_write_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
WRITE3args *args = (WRITE3args*)call->body.cbody.args;
WRITE3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_WRITE3res, sizeof(WRITE3res));
return 0;
}
static int nfs3_create_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
CREATE3args *args = (CREATE3args*)call->body.cbody.args;
CREATE3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_CREATE3res, sizeof(CREATE3res));
return 0;
}
static int nfs3_mkdir_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
MKDIR3args *args = (MKDIR3args*)call->body.cbody.args;
MKDIR3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_MKDIR3res, sizeof(MKDIR3res));
return 0;
}
static int nfs3_symlink_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
SYMLINK3args *args = (SYMLINK3args*)call->body.cbody.args;
SYMLINK3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_SYMLINK3res, sizeof(SYMLINK3res));
return 0;
}
static int nfs3_mknod_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
MKNOD3args *args = (MKNOD3args*)call->body.cbody.args;
MKNOD3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_MKNOD3res, sizeof(MKNOD3res));
return 0;
}
static int nfs3_remove_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
REMOVE3args *args = (REMOVE3args*)call->body.cbody.args;
REMOVE3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_REMOVE3res, sizeof(REMOVE3res));
return 0;
}
static int nfs3_rmdir_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
RMDIR3args *args = (RMDIR3args*)call->body.cbody.args;
RMDIR3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_RMDIR3res, sizeof(RMDIR3res));
return 0;
}
static int nfs3_rename_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
RENAME3args *args = (RENAME3args*)call->body.cbody.args;
RENAME3res reply;
// Not supported yet
reply.status = NFS3ERR_NOTSUPP;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_RENAME3res, sizeof(RENAME3res));
return 0;
}
static int nfs3_link_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
LINK3args *args = (LINK3args*)call->body.cbody.args;
// We don't support hard links
LINK3res reply = { NFS3ERR_NOTSUPP };
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_LINK3res, sizeof(LINK3res));
return 0;
}
static void nfs3_readdir_common(struct rpc_context *rpc, struct rpc_msg *call, void *opaque, bool is_plus)
{
nfs_client_t *self = (nfs_client_t*)opaque;
READDIRPLUS3args plus_args;
READDIRPLUS3args *args = NULL;
if (is_plus)
args = ((READDIRPLUS3args*)call->body.cbody.args);
else
{
args = &plus_args;
READDIR3args *in_args = ((READDIR3args*)call->body.cbody.args);
args->dir = in_args->dir;
args->cookie = in_args->cookie;
*((uint64_t*)args->cookieverf) = *((uint64_t*)in_args->cookieverf);
args->dircount = 512;
args->maxcount = in_args->count;
}
std::string dirhash = std::string(args->dir.data.data_val, args->dir.data.data_len);
std::string dir;
if (dirhash != "roothandle")
{
auto dir_it = self->parent->dir_by_hash.find(dirhash);
if (dir_it != self->parent->dir_by_hash.end())
dir = dir_it->second;
}
std::string prefix = self->parent->name_prefix;
if (dir != "")
{
prefix += dir+"/";
}
//struct timespec now;
//clock_gettime(CLOCK_REALTIME, &now);
std::map<std::string, struct entryplus3> entries;
std::vector<std::string> handles;
for (auto & ic: self->parent->cli->st_cli.inode_config)
{
auto & inode_cfg = ic.second;
if (prefix != "" && inode_cfg.name.substr(0, prefix.size()) != prefix)
continue;
std::string subname = inode_cfg.name.substr(prefix.size());
int p = 0;
while (p < subname.size() && subname[p] == '/')
p++;
if (p > 0)
subname = subname.substr(p);
if (subname.size() == 0)
continue;
p = 0;
while (p < subname.size() && subname[p] != '/')
p++;
if (p >= subname.size())
{
entries[subname] = (struct entryplus3){
// fileid will change when the user creates snapshots
// however, we hope that clients tolerate it well
// Linux does, even though it complains about "fileid changed" in dmesg
.fileid = ic.first,
};
if (is_plus)
{
handles.push_back("S"+base64_encode(sha256(inode_cfg.name)));
entries[subname].name_attributes = {
.attributes_follow = TRUE,
.post_op_attr_u = { .attributes = {
.type = NF3REG,
.mode = 0644,
.nlink = 1,
.uid = 0,
.gid = 0,
.size = inode_cfg.size,
.used = inode_cfg.size, // FIXME take from statistics
.rdev = (specdata3){ 0 },
.fsid = self->parent->fsid,
.fileid = ic.first,
//.atime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
//.mtime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
//.ctime = (nfstime3){ .seconds = now.tv_sec, .nseconds = now.tv_nsec },
} },
};
entries[subname].name_handle = {
.handle_follows = TRUE,
.post_op_fh3_u = { .handle = {
.data = {
// FIXME: I really want ZDR with std::string
.data_len = handles[handles.size()-1].size(),
.data_val = (char*)handles[handles.size()-1].c_str(),
},
} },
};
}
}
else
{
auto subdir = dir == "" ? subname.substr(0, p) : dir+"/"+subname.substr(0, p);
entries[subdir] = (struct entryplus3){
// for directories, fileid will change when the user restarts proxy
.fileid = self->parent->dir_ids.at(subdir),
};
if (is_plus)
{
handles.push_back("S"+base64_encode(sha256(subdir)));
entries[subdir].name_attributes = {
.attributes_follow = TRUE,
.post_op_attr_u = { .attributes = get_dir_attributes(self, subdir) },
};
entries[subdir].name_handle = {
.handle_follows = TRUE,
.post_op_fh3_u = { .handle = {
.data = {
// FIXME: I really want ZDR with std::string
.data_len = (unsigned)handles[handles.size()-1].size(),
.data_val = (char*)handles[handles.size()-1].c_str(),
},
} },
};
}
}
}
// Offset results by the continuation cookie (equal to index in the listing)
uint64_t idx = 1;
void *prev = NULL;
for (auto it = entries.begin(); it != entries.end(); it++)
{
entryplus3 *entry = &it->second;
// First fields of entry3 and entryplus3 are the same: fileid, name, cookie
entry->name = (char*)it->first.c_str();
entry->cookie = idx++;
if (prev)
{
if (is_plus)
((entryplus3*)prev)->nextentry = entry;
else
((entry3*)prev)->nextentry = (entry3*)entry;
}
prev = entry;
if (args->cookie > 0 && entry->cookie == args->cookie+1)
{
entries.erase(entries.begin(), it);
}
}
// Now limit results based on maximum reply size
// Sadly we have to calculate reply size by hand
// reply without entries is 4+4+(dir_attributes ? sizeof(fattr3) : 0)+8+4 bytes
int reply_size = 20;
if (reply_size > args->maxcount)
{
// Error, too small max reply size
if (is_plus)
{
READDIRPLUS3res reply = { .status = NFS3ERR_TOOSMALL };
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READDIRPLUS3res, sizeof(READDIRPLUS3res));
}
else
{
READDIR3res reply = { .status = NFS3ERR_TOOSMALL };
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READDIR3res, sizeof(READDIR3res));
}
return;
}
// 1 entry3 is (8+4+(filename_len+3)/4*4+8) bytes
// 1 entryplus3 is (8+4+(filename_len+3)/4*4+8
// + 4+(name_attributes ? (sizeof(fattr3) = 84) : 0)
// + 4+(name_handle ? 4+(handle_len+3)/4*4 : 0)) bytes
bool eof = true;
for (auto it = entries.begin(); it != entries.end(); it++)
{
reply_size += 20+len_pad4(it->first.size())+(is_plus
? 8+84+len_pad4(it->second.name_handle.post_op_fh3_u.handle.data.data_len) : 0);
if (reply_size > args->maxcount)
{
// Stop
entries.erase(it, entries.end());
eof = false;
break;
}
}
if (entries.end() != entries.begin())
{
auto last_it = entries.end();
last_it--;
if (is_plus)
((entryplus3*)&last_it->second)->nextentry = NULL;
else
((entry3*)&last_it->second)->nextentry = NULL;
}
// Send reply
if (is_plus)
{
READDIRPLUS3res reply = { .status = NFS3_OK };
*(uint64_t*)(reply.READDIRPLUS3res_u.resok.cookieverf) = self->parent->dir_mod_rev.at(dir);
reply.READDIRPLUS3res_u.resok.reply.entries = &entries.begin()->second;
reply.READDIRPLUS3res_u.resok.reply.eof = eof;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READDIRPLUS3res, sizeof(READDIRPLUS3res));
}
else
{
READDIR3res reply = { .status = NFS3_OK };
*(uint64_t*)(reply.READDIR3res_u.resok.cookieverf) = self->parent->dir_mod_rev.at(dir);
reply.READDIR3res_u.resok.reply.entries = (entry3*)&entries.begin()->second;
reply.READDIR3res_u.resok.reply.eof = eof;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_READDIR3res, sizeof(READDIR3res));
}
}
static int nfs3_readdir_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs3_readdir_common(rpc, call, opaque, false);
return 0;
}
static int nfs3_readdirplus_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs3_readdir_common(rpc, call, opaque, true);
return 0;
}
// Get file system statistics
static int nfs3_fsstat_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
FSSTAT3args *args = (FSSTAT3args*)call->body.cbody.args;
FSSTAT3res reply;
reply.status = NFS3_OK;
reply.FSSTAT3res_u.resok.obj_attributes.attributes_follow = TRUE;
reply.FSSTAT3res_u.resok.obj_attributes.post_op_attr_u.attributes = get_dir_attributes(self, "");
reply.FSSTAT3res_u.resok.tbytes = 4096; // total bytes
reply.FSSTAT3res_u.resok.fbytes = 4096; // free bytes
reply.FSSTAT3res_u.resok.abytes = 4096; // available bytes
reply.FSSTAT3res_u.resok.tfiles = 1 << 31; // total files
reply.FSSTAT3res_u.resok.ffiles = 1 << 31; // free files
reply.FSSTAT3res_u.resok.afiles = 1 << 31; // available files
reply.FSSTAT3res_u.resok.invarsec = 0;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_FSSTAT3res, sizeof(FSSTAT3res));
return 0;
}
static int nfs3_fsinfo_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
FSINFO3args *args = (FSINFO3args*)call->body.cbody.args;
FSINFO3res reply;
if (args->fsroot.data.data_len != 10)
{
// Example error
reply.status = NFS3ERR_INVAL;
}
else
{
// Fill info
reply.status = NFS3_OK;
reply.FSINFO3res_u.resok.obj_attributes.attributes_follow = TRUE;
reply.FSINFO3res_u.resok.obj_attributes.post_op_attr_u.attributes = get_dir_attributes(self, "");
reply.FSINFO3res_u.resok.rtmax = 128*1024*1024;
reply.FSINFO3res_u.resok.rtpref = 128*1024*1024;
reply.FSINFO3res_u.resok.rtmult = 4096;
reply.FSINFO3res_u.resok.wtmax = 128*1024*1024;
reply.FSINFO3res_u.resok.wtpref = 128*1024*1024;
reply.FSINFO3res_u.resok.wtmult = 4096;
reply.FSINFO3res_u.resok.dtpref = 128;
reply.FSINFO3res_u.resok.maxfilesize = 0x7fffffffffffffff;
reply.FSINFO3res_u.resok.time_delta.seconds = 1;
reply.FSINFO3res_u.resok.time_delta.nseconds = 0;
reply.FSINFO3res_u.resok.properties = FSF3_SYMLINK | FSF3_HOMOGENEOUS;
}
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_FSINFO3res, sizeof(FSINFO3res));
return 0;
}
static int nfs3_pathconf_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
PATHCONF3args *args = (PATHCONF3args*)call->body.cbody.args;
PATHCONF3res reply;
if (args->object.data.data_len != 10)
{
// Example error
reply.status = NFS3ERR_INVAL;
}
else
{
// Fill info
reply.status = NFS3_OK;
reply.PATHCONF3res_u.resok.obj_attributes.attributes_follow = FALSE;
reply.PATHCONF3res_u.resok.linkmax = 0;
reply.PATHCONF3res_u.resok.name_max = 255;
reply.PATHCONF3res_u.resok.no_trunc = TRUE;
reply.PATHCONF3res_u.resok.chown_restricted = FALSE;
reply.PATHCONF3res_u.resok.case_insensitive = FALSE;
reply.PATHCONF3res_u.resok.case_preserving = TRUE;
}
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_PATHCONF3res, sizeof(PATHCONF3res));
return 0;
}
static int nfs3_commit_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
COMMIT3args *args = (COMMIT3args*)call->body.cbody.args;
COMMIT3res reply = {};
// Just pretend we did fsync :-)
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_COMMIT3res, sizeof(COMMIT3res));
return 0;
}
static int mount3_mnt_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
dirpath *arg = (dirpath*)call->body.cbody.args;
int flavor = AUTH_NONE;
mountres3 reply;
reply.fhs_status = MNT3_OK;
reply.mountres3_u.mountinfo.fhandle.fhandle3_len = 10;
reply.mountres3_u.mountinfo.fhandle.fhandle3_val = "roothandle";
reply.mountres3_u.mountinfo.auth_flavors.auth_flavors_len = 1;
reply.mountres3_u.mountinfo.auth_flavors.auth_flavors_val = &flavor;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_mountres3, sizeof(mountres3));
return 0;
}
static int mount3_dump_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
mountlist reply;
reply = (struct mountbody*)malloc(sizeof(struct mountbody));
reply->ml_hostname = (dirpath)"127.0.0.1";
reply->ml_directory = (dirpath)"/test";
reply->ml_next = NULL;
rpc_send_reply(rpc, call, NULL, (zdrproc_t)zdr_mountlist, sizeof(mountlist));
free(reply);
return 0;
}
static int mount3_umnt_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
dirpath *arg = (dirpath*)call->body.cbody.args;
// do nothing
rpc_send_reply(rpc, call, NULL, (zdrproc_t)zdr_void, 0);
return 0;
}
static int mount3_umntall_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
// do nothing
rpc_send_reply(rpc, call, NULL, (zdrproc_t)zdr_void, 0);
return 0;
}
static int mount3_export_proc(struct rpc_context *rpc, struct rpc_msg *call, void *opaque)
{
nfs_client_t *self = (nfs_client_t*)opaque;
exports reply;
reply = (struct exportnode*)malloc(sizeof(struct exportnode) + sizeof(struct groupnode));
reply->ex_dir = (dirpath)"/test";
reply->ex_groups = (struct groupnode*)(reply+1);
reply->ex_groups->gr_name = (dirpath)"127.0.0.1";
reply->ex_groups->gr_next = NULL;
reply->ex_next = NULL;
rpc_send_reply(rpc, call, &reply, (zdrproc_t)zdr_exports, sizeof(exports));
free(reply);
return 0;
}
nfs_client_t::nfs_client_t()
{
struct service_proc nfs3_pt_a[22] = {
{NFS3_NULL, nfs3_null_proc, (zdrproc_t)zdr_void, 0, this},
{NFS3_GETATTR, nfs3_getattr_proc, (zdrproc_t)zdr_GETATTR3args, sizeof(GETATTR3args), this},
{NFS3_SETATTR, nfs3_setattr_proc, (zdrproc_t)zdr_SETATTR3args, sizeof(SETATTR3args), this},
{NFS3_LOOKUP, nfs3_lookup_proc, (zdrproc_t)zdr_LOOKUP3args, sizeof(LOOKUP3args), this},
{NFS3_ACCESS, nfs3_access_proc, (zdrproc_t)zdr_ACCESS3args, sizeof(ACCESS3args), this},
{NFS3_READLINK, nfs3_readlink_proc, (zdrproc_t)zdr_READLINK3args, sizeof(READLINK3args), this},
{NFS3_READ, nfs3_read_proc, (zdrproc_t)zdr_READ3args, sizeof(READ3args), this},
{NFS3_WRITE, nfs3_write_proc, (zdrproc_t)zdr_WRITE3args, sizeof(WRITE3args), this},
{NFS3_CREATE, nfs3_create_proc, (zdrproc_t)zdr_CREATE3args, sizeof(CREATE3args), this},
{NFS3_MKDIR, nfs3_mkdir_proc, (zdrproc_t)zdr_MKDIR3args, sizeof(MKDIR3args), this},
{NFS3_SYMLINK, nfs3_symlink_proc, (zdrproc_t)zdr_SYMLINK3args, sizeof(SYMLINK3args), this},
{NFS3_MKNOD, nfs3_mknod_proc, (zdrproc_t)zdr_MKNOD3args, sizeof(MKNOD3args), this},
{NFS3_REMOVE, nfs3_remove_proc, (zdrproc_t)zdr_REMOVE3args, sizeof(REMOVE3args), this},
{NFS3_RMDIR, nfs3_rmdir_proc, (zdrproc_t)zdr_RMDIR3args, sizeof(RMDIR3args), this},
{NFS3_RENAME, nfs3_rename_proc, (zdrproc_t)zdr_RENAME3args, sizeof(RENAME3args), this},
{NFS3_LINK, nfs3_link_proc, (zdrproc_t)zdr_LINK3args, sizeof(LINK3args), this},
{NFS3_READDIR, nfs3_readdir_proc, (zdrproc_t)zdr_READDIR3args, sizeof(READDIR3args), this},
{NFS3_READDIRPLUS, nfs3_readdirplus_proc, (zdrproc_t)zdr_READDIRPLUS3args, sizeof(READDIRPLUS3args), this},
{NFS3_FSSTAT, nfs3_fsstat_proc, (zdrproc_t)zdr_FSSTAT3args, sizeof(FSSTAT3args), this},
{NFS3_FSINFO, nfs3_fsinfo_proc, (zdrproc_t)zdr_FSINFO3args, sizeof(FSINFO3args), this},
{NFS3_PATHCONF, nfs3_pathconf_proc, (zdrproc_t)zdr_PATHCONF3args, sizeof(PATHCONF3args), this},
{NFS3_COMMIT, nfs3_commit_proc, (zdrproc_t)zdr_COMMIT3args, sizeof(COMMIT3args), this},
};
for (int i = 0; i < sizeof(nfs3_pt_a)/sizeof(service_proc); i++)
{
nfs3_pt.push_back(nfs3_pt_a[i]);
}
struct service_proc nfs3_mount_pt_a[6] = {
{MOUNT3_NULL, nfs3_null_proc, (zdrproc_t)zdr_void, 0, this},
{MOUNT3_MNT, mount3_mnt_proc, (zdrproc_t)zdr_dirpath, sizeof(dirpath), this},
{MOUNT3_DUMP, mount3_dump_proc, (zdrproc_t)zdr_void, 0, this},
{MOUNT3_UMNT, mount3_umnt_proc, (zdrproc_t)zdr_dirpath, sizeof(dirpath), this},
{MOUNT3_UMNTALL, mount3_umntall_proc, (zdrproc_t)zdr_void, 0, this},
{MOUNT3_EXPORT, mount3_export_proc, (zdrproc_t)zdr_void, 0, this},
};
for (int i = 0; i < sizeof(nfs3_mount_pt_a)/sizeof(service_proc); i++)
{
nfs3_mount_pt.push_back(nfs3_mount_pt_a[i]);
}
}
nfs_client_t::~nfs_client_t()
{
if (rpc)
{
rpc_disconnect(rpc, NULL);
rpc_destroy_context(rpc);
}
}
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