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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177/* NFSv4.1 client for Windows * Copyright � 2012 The Regents of the University of Michigan * * Olga Kornievskaia <aglo@umich.edu> * Casey Bodley <cbodley@umich.edu> * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or (at * your option) any later version. * * This library is distributed in the hope that it will be useful, but * without any warranty; without even the implied warranty of merchantability * or fitness for a particular purpose. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA */
#include <windows.h>#include <strsafe.h>#include <stdio.h>
#include "daemon_debug.h"#include "nfs41_ops.h"#include "upcall.h"#include "util.h"
/* NFS41_MOUNT */static int parse_mount(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall) { int status; mount_upcall_args *args = &upcall->args.mount;
status = get_name(&buffer, &length, &args->hostname); if(status) goto out; status = get_name(&buffer, &length, &args->path); if(status) goto out; status = safe_read(&buffer, &length, &args->sec_flavor, sizeof(DWORD)); if (status) goto out; status = safe_read(&buffer, &length, &args->rsize, sizeof(DWORD)); if (status) goto out; status = safe_read(&buffer, &length, &args->wsize, sizeof(DWORD)); if (status) goto out;
dprintf(1, "parsing NFS14_MOUNT: srv_name=%s root=%s sec_flavor=%s " "rsize=%d wsize=%d\n", args->hostname, args->path, secflavorop2name(args->sec_flavor), args->rsize, args->wsize);out: return status;}
static int handle_mount(nfs41_upcall *upcall){ int status; mount_upcall_args *args = &upcall->args.mount; nfs41_abs_path path; multi_addr4 addrs; nfs41_root *root; nfs41_client *client; nfs41_path_fh file;
// resolve hostname,port status = nfs41_server_resolve(args->hostname, 2049, &addrs); if (status) { eprintf("nfs41_server_resolve() failed with %d\n", status); goto out; }
if (upcall->root_ref != INVALID_HANDLE_VALUE) { /* use an existing root from a previous mount, but don't take an * extra reference; we'll only get one UNMOUNT upcall for each root */ root = upcall->root_ref; } else { // create root status = nfs41_root_create(args->hostname, args->sec_flavor, args->wsize + WRITE_OVERHEAD, args->rsize + READ_OVERHEAD, &root); if (status) { eprintf("nfs41_root_create() failed %d\n", status); goto out; } root->uid = upcall->uid; root->gid = upcall->gid; }
// find or create the client/session status = nfs41_root_mount_addrs(root, &addrs, 0, 0, &client); if (status) { eprintf("nfs41_root_mount_addrs() failed with %d\n", status); goto out_err; }
// make a copy of the path for nfs41_lookup() InitializeSRWLock(&path.lock); if (FAILED(StringCchCopyA(path.path, NFS41_MAX_PATH_LEN, args->path))) { status = ERROR_FILENAME_EXCED_RANGE; goto out_err; } path.len = (unsigned short)strlen(path.path);
// look up the mount path, and fail if it doesn't exist status = nfs41_lookup(root, client->session, &path, NULL, &file, NULL, NULL); if (status) { eprintf("nfs41_lookup('%s') failed with %d\n", path.path, status); status = ERROR_BAD_NETPATH; goto out_err; }
nfs41_superblock_fs_attributes(file.fh.superblock, &args->FsAttrs);
if (upcall->root_ref == INVALID_HANDLE_VALUE) nfs41_root_ref(root); upcall->root_ref = root; args->lease_time = client->session->lease_time;out: return status;
out_err: if (upcall->root_ref == INVALID_HANDLE_VALUE) nfs41_root_deref(root); goto out;}
static int marshall_mount(unsigned char *buffer, uint32_t *length, nfs41_upcall *upcall){ mount_upcall_args *args = &upcall->args.mount; int status; dprintf(2, "NFS41_MOUNT: writing pointer to nfs41_root %p, version %d, " "lease_time %d\n", upcall->root_ref, NFS41D_VERSION, args->lease_time); status = safe_write(&buffer, length, &upcall->root_ref, sizeof(HANDLE)); if (status) goto out; status = safe_write(&buffer, length, &NFS41D_VERSION, sizeof(DWORD)); if (status) goto out; status = safe_write(&buffer, length, &args->lease_time, sizeof(DWORD)); if (status) goto out; status = safe_write(&buffer, length, &args->FsAttrs, sizeof(args->FsAttrs));out: return status;}
static void cancel_mount(IN nfs41_upcall *upcall){ if (upcall->root_ref != INVALID_HANDLE_VALUE) nfs41_root_deref(upcall->root_ref);}
const nfs41_upcall_op nfs41_op_mount = { parse_mount, handle_mount, marshall_mount, cancel_mount};
/* NFS41_UNMOUNT */static int parse_unmount(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall) { dprintf(1, "parsing NFS41_UNMOUNT: root=%p\n", upcall->root_ref); return ERROR_SUCCESS;}
static int handle_unmount(nfs41_upcall *upcall){ /* release the original reference from nfs41_root_create() */ nfs41_root_deref(upcall->root_ref); return ERROR_SUCCESS;}
const nfs41_upcall_op nfs41_op_unmount = { parse_unmount, handle_unmount};