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kernel_interface.cpp
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kernel_interface.cpp
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/*
* Copyright 2012 Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Paweł Dziepak, pdziepak@quarnos.org
*/
#include <stdio.h>
#include <AutoDeleter.h>
#include <fs_cache.h>
#include <fs_interface.h>
#include "Connection.h"
#include "FileSystem.h"
#include "IdMap.h"
#include "Inode.h"
#include "NFS4Defs.h"
#include "RequestBuilder.h"
#include "ReplyInterpreter.h"
#include "RootInode.h"
#include "RPCCallbackServer.h"
#include "RPCServer.h"
#include "VnodeToInode.h"
#include "WorkQueue.h"
#ifdef DEBUG
#define TRACE_NFS4
#endif
#ifdef TRACE_NFS4
static mutex gTraceLock = MUTEX_INITIALIZER(NULL);
#define TRACE(x...) \
{ \
mutex_lock(&gTraceLock); \
dprintf("nfs4: %s(): ", __FUNCTION__); \
dprintf(x); \
dprintf("\n"); \
mutex_unlock(&gTraceLock); \
}
#else
#define TRACE(x...) (void)0
#endif
extern fs_volume_ops gNFSv4VolumeOps;
extern fs_vnode_ops gNFSv4VnodeOps;
RPC::ServerManager* gRPCServerManager;
RPC::ProgramData*
CreateNFS4Server(RPC::Server* serv)
{
return new NFS4Server(serv);
}
// Format: ip{4,6}_address:path options
// Available options:
// hard - retry requests until success
// soft - retry requests no more than retrans times (default)
// timeo=X - request time limit before next retransmission (default: 60s)
// retrans=X - retry requests X times (default: 5)
// ac - use metadata cache (default)
// noac - do not use metadata cache
// xattr-emu - emulate named attributes
// noxattr-emu - do not emulate named attributes (default)
// port=X - connect to port X (default: 2049)
// proto=X - user transport protocol X (default: tcp)
// dirtime=X - attempt revalidate directory cache not more often than each X
// seconds
static status_t
ParseArguments(const char* _args, AddressResolver** address, char** _server,
char** _path, MountConfiguration* conf)
{
if (_args == NULL)
return B_BAD_VALUE;
char* args = strdup(_args);
if (args == NULL)
return B_NO_MEMORY;
MemoryDeleter argsDeleter(args);
char* options = strchr(args, ' ');
if (options != NULL)
*options++ = '\0';
char* path = strrchr(args, ':');
if (path == NULL)
return B_MISMATCHED_VALUES;
*path++ = '\0';
*_server = strdup(args);
if (*_server == NULL)
return B_NO_MEMORY;
*address = new AddressResolver(args);
if (*address == NULL) {
free(*_server);
return B_NO_MEMORY;
}
*_path = strdup(path);
if (*_path == NULL) {
free(*_server);
delete *address;
return B_NO_MEMORY;
}
conf->fHard = false;
conf->fRetryLimit = 5;
conf->fRequestTimeout = sSecToBigTime(60);
conf->fEmulateNamedAttrs = false;
conf->fCacheMetadata = true;
conf->fDirectoryCacheTime = sSecToBigTime(5);
char* optionsEnd = NULL;
if (options != NULL)
optionsEnd = strchr(options, ' ');
while (options != NULL && *options != '\0') {
if (optionsEnd != NULL)
*optionsEnd++ = '\0';
if (strcmp(options, "hard") == 0)
conf->fHard = true;
else if (strncmp(options, "retrans=", 8) == 0) {
options += strlen("retrans=");
conf->fRetryLimit = atoi(options);
} else if (strncmp(options, "timeo=", 6) == 0) {
options += strlen("timeo=");
conf->fRequestTimeout = atoi(options);
} else if (strcmp(options, "noac") == 0)
conf->fCacheMetadata = false;
else if (strcmp(options, "xattr-emu") == 0)
conf->fEmulateNamedAttrs = true;
else if (strncmp(options, "port=", 5) == 0) {
options += strlen("port=");
(*address)->ForcePort(atoi(options));
} else if (strncmp(options, "proto=", 6) == 0) {
options += strlen("proto=");
(*address)->ForceProtocol(options);
} else if (strncmp(options, "dirtime=", 8) == 0) {
options += strlen("dirtime=");
conf->fDirectoryCacheTime = sSecToBigTime(atoi(options));
}
options = optionsEnd;
if (options != NULL)
optionsEnd = strchr(options, ' ');
}
return B_OK;
}
static status_t
nfs4_mount(fs_volume* volume, const char* device, uint32 flags,
const char* args, ino_t* _rootVnodeID)
{
TRACE("volume = %p, device = %s, flags = %" B_PRIu32 ", args = %s", volume,
device, flags, args);
status_t result;
/* prepare idmapper server */
MutexLocker locker(gIdMapperLock);
gIdMapper = new(std::nothrow) IdMap;
if (gIdMapper == NULL)
return B_NO_MEMORY;
result = gIdMapper->InitStatus();
if (result != B_OK) {
delete gIdMapper;
gIdMapper = NULL;
return result;
}
locker.Unlock();
AddressResolver* resolver;
MountConfiguration config;
char* path;
char* serverName;
result = ParseArguments(args, &resolver, &serverName, &path, &config);
if (result != B_OK)
return result;
MemoryDeleter pathDeleter(path);
MemoryDeleter serverNameDeleter(serverName);
RPC::Server* server;
result = gRPCServerManager->Acquire(&server, resolver, CreateNFS4Server);
delete resolver;
if (result != B_OK)
return result;
FileSystem* fs;
result = FileSystem::Mount(&fs, server, serverName, path, volume->id,
config);
if (result != B_OK) {
gRPCServerManager->Release(server);
return result;
}
Inode* inode = fs->Root();
if (inode == NULL) {
delete fs;
gRPCServerManager->Release(server);
return B_IO_ERROR;
}
volume->private_volume = fs;
volume->ops = &gNFSv4VolumeOps;
VnodeToInode* vti = new VnodeToInode(inode->ID(), fs);
if (vti == NULL) {
delete fs;
gRPCServerManager->Release(server);
return B_NO_MEMORY;
}
vti->Replace(inode);
result = publish_vnode(volume, inode->ID(), vti, &gNFSv4VnodeOps,
inode->Type(), 0);
if (result != B_OK)
return result;
*_rootVnodeID = inode->ID();
TRACE("*_rootVnodeID = %" B_PRIi64, inode->ID());
return B_OK;
}
static status_t
nfs4_get_vnode(fs_volume* volume, ino_t id, fs_vnode* vnode, int* _type,
uint32* _flags, bool reenter)
{
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
TRACE("volume = %p, id = %" B_PRIi64, volume, id);
VnodeToInode* vnodeToInode = new VnodeToInode(id, fs);
if (vnodeToInode == NULL)
return B_NO_MEMORY;
Inode* inode;
status_t result = fs->GetInode(id, &inode);
if (result != B_OK) {
delete vnodeToInode;
return result;
}
vnodeToInode->Replace(inode);
vnode->ops = &gNFSv4VnodeOps;
vnode->private_node = vnodeToInode;
*_type = inode->Type();
*_flags = 0;
return B_OK;
}
static status_t
nfs4_unmount(fs_volume* volume)
{
TRACE("volume = %p", volume);
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
RPC::Server* server = fs->Server();
delete fs;
gRPCServerManager->Release(server);
return B_OK;
}
static status_t
nfs4_read_fs_info(fs_volume* volume, struct fs_info* info)
{
TRACE("volume = %p", volume);
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
RootInode* inode = reinterpret_cast<RootInode*>(fs->Root());
return inode->ReadInfo(info);
}
static status_t
nfs4_lookup(fs_volume* volume, fs_vnode* dir, const char* name, ino_t* _id)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(dir->private_node);
if (!strcmp(name, ".")) {
*_id = vti->ID();
void* ptr;
return get_vnode(volume, *_id, &ptr);
}
VnodeToInodeLocker locker(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
TRACE("volume = %p, dir = %" B_PRIi64 ", name = %s", volume, vti->ID(),
name);
status_t result = inode->LookUp(name, _id);
if (result != B_OK)
return result;
locker.Unlock();
TRACE("*_id = %" B_PRIi64, *_id);
// If VTI holds an outdated Inode next operation performed on it will
// return either ERR_STALE or ERR_FHEXPIRED. Both of these error codes
// will cause FileInfo data to be updated (the former will also cause Inode
// object to be recreated). We are taking an optimistic (an lazy) approach
// here. The following code just ensures VTI won't be removed too soon.
void* ptr;
result = get_vnode(volume, *_id, &ptr);
if (result == B_OK)
unremove_vnode(volume, *_id);
return result;
}
static status_t
nfs4_put_vnode(fs_volume* volume, fs_vnode* vnode, bool reenter)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64, volume, vti->ID());
delete vti;
return B_OK;
}
static status_t
nfs4_remove_vnode(fs_volume* volume, fs_vnode* vnode, bool reenter)
{
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64, volume, vti->ID());
if (fs->Root() == vti->GetPointer())
return B_OK;
ASSERT(vti->GetPointer() == NULL);
delete vti;
return B_OK;
}
static status_t
nfs4_read_pages(fs_volume* _volume, fs_vnode* vnode, void* _cookie, off_t pos,
const iovec* vecs, size_t count, size_t* _numBytes)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p, pos = %" B_PRIi64 \
", count = %lu, numBytes = %lu", _volume, vti->ID(), _cookie, pos,
count, *_numBytes);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
OpenFileCookie* cookie = reinterpret_cast<OpenFileCookie*>(_cookie);
status_t result;
size_t totalRead = 0;
bool eof = false;
for (size_t i = 0; i < count && !eof; i++) {
size_t bytesLeft = vecs[i].iov_len;
char* buffer = reinterpret_cast<char*>(vecs[i].iov_base);
do {
size_t bytesRead = bytesLeft;
result = inode->ReadDirect(cookie, pos, buffer, &bytesRead, &eof);
if (result != B_OK)
return result;
totalRead += bytesRead;
pos += bytesRead;
buffer += bytesRead;
bytesLeft -= bytesRead;
} while (bytesLeft > 0 && !eof);
}
*_numBytes = totalRead;
TRACE("*numBytes = %lu", totalRead);
return B_OK;
}
static status_t
nfs4_write_pages(fs_volume* _volume, fs_vnode* vnode, void* _cookie, off_t pos,
const iovec* vecs, size_t count, size_t* _numBytes)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p, pos = %" B_PRIi64 \
", count = %lu, numBytes = %lu", _volume, vti->ID(), _cookie, pos,
count, *_numBytes);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
OpenFileCookie* cookie = reinterpret_cast<OpenFileCookie*>(_cookie);
status_t result;
for (size_t i = 0; i < count; i++) {
uint64 bytesLeft = vecs[i].iov_len;
if (pos + bytesLeft > inode->MaxFileSize())
bytesLeft = inode->MaxFileSize() - pos;
char* buffer = reinterpret_cast<char*>(vecs[i].iov_base);
do {
size_t bytesWritten = bytesLeft;
result = inode->WriteDirect(cookie, pos, buffer, &bytesWritten);
if (result != B_OK)
return result;
bytesLeft -= bytesWritten;
pos += bytesWritten;
buffer += bytesWritten;
} while (bytesLeft > 0);
}
return B_OK;
}
static status_t
nfs4_io(fs_volume* volume, fs_vnode* vnode, void* cookie, io_request* request)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p", volume, vti->ID(),
cookie);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
IORequestArgs* args = new(std::nothrow) IORequestArgs;
if (args == NULL) {
notify_io_request(request, B_NO_MEMORY);
return B_NO_MEMORY;
}
args->fRequest = request;
args->fInode = inode;
status_t result = gWorkQueue->EnqueueJob(IORequest, args);
if (result != B_OK)
notify_io_request(request, result);
return result;
}
static status_t
nfs4_get_file_map(fs_volume* volume, fs_vnode* vnode, off_t _offset,
size_t size, struct file_io_vec* vecs, size_t* _count)
{
return B_ERROR;
}
static status_t
nfs4_set_flags(fs_volume* volume, fs_vnode* vnode, void* _cookie, int flags)
{
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p, flags = %d", volume,
reinterpret_cast<VnodeToInode*>(vnode->private_node)->ID(), _cookie,
flags);
OpenFileCookie* cookie = reinterpret_cast<OpenFileCookie*>(_cookie);
cookie->fMode = (cookie->fMode & ~(O_APPEND | O_NONBLOCK)) | flags;
return B_OK;
}
static status_t
nfs4_fsync(fs_volume* volume, fs_vnode* vnode)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64, volume, vti->ID());
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
return inode->SyncAndCommit();
}
static status_t
nfs4_read_symlink(fs_volume* volume, fs_vnode* link, char* buffer,
size_t* _bufferSize)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(link->private_node);
TRACE("volume = %p, link = %" B_PRIi64, volume, vti->ID());
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
return inode->ReadLink(buffer, _bufferSize);
}
static status_t
nfs4_create_symlink(fs_volume* volume, fs_vnode* dir, const char* name,
const char* path, int mode)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(dir->private_node);
TRACE("volume = %p, dir = %" B_PRIi64 ", name = %s, path = %s, mode = %d",
volume, vti->ID(), name, path, mode);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
ino_t id;
status_t result = inode->CreateLink(name, path, mode, &id);
if (result != B_OK)
return result;
result = get_vnode(volume, id, reinterpret_cast<void**>(&vti));
if (result == B_OK) {
unremove_vnode(volume, id);
vti->Clear();
put_vnode(volume, id);
}
return B_OK;
}
static status_t
nfs4_link(fs_volume* volume, fs_vnode* dir, const char* name, fs_vnode* vnode)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
VnodeToInode* dirVti = reinterpret_cast<VnodeToInode*>(dir->private_node);
TRACE("volume = %p, dir = %" B_PRIi64 ", name = %s, vnode = %" B_PRIi64,
volume, dirVti->ID(), name, vti->ID());
VnodeToInodeLocker _dir(dirVti);
Inode* dirInode = dirVti->Get();
if (dirInode == NULL)
return B_ENTRY_NOT_FOUND;
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
return inode->Link(dirInode, name);
}
static status_t
nfs4_unlink(fs_volume* volume, fs_vnode* dir, const char* name)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(dir->private_node);
VnodeToInodeLocker locker(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
TRACE("volume = %p, dir = %" B_PRIi64 ", name = %s", volume, vti->ID(),
name);
ino_t id;
status_t result = inode->Remove(name, NF4REG, &id);
if (result != B_OK)
return result;
locker.Unlock();
result = acquire_vnode(volume, id);
if (result == B_OK) {
result = get_vnode(volume, id, reinterpret_cast<void**>(&vti));
ASSERT(result == B_OK);
if (vti->Unlink(inode->fInfo.fNames, name))
remove_vnode(volume, id);
put_vnode(volume, id);
put_vnode(volume, id);
}
return B_OK;
}
static status_t
nfs4_rename(fs_volume* volume, fs_vnode* fromDir, const char* fromName,
fs_vnode* toDir, const char* toName)
{
VnodeToInode* fromVti
= reinterpret_cast<VnodeToInode*>(fromDir->private_node);
VnodeToInode* toVti = reinterpret_cast<VnodeToInode*>(toDir->private_node);
TRACE("volume = %p, fromDir = %" B_PRIi64 ", toDir = %" B_PRIi64 "," \
" fromName = %s, toName = %s", volume, fromVti->ID(), toVti->ID(), \
fromName, toName);
VnodeToInodeLocker _from(fromVti);
Inode* fromInode = fromVti->Get();
if (fromInode == NULL)
return B_ENTRY_NOT_FOUND;
VnodeToInodeLocker _to(toVti);
Inode* toInode = toVti->Get();
if (toInode == NULL)
return B_ENTRY_NOT_FOUND;
ino_t id;
ino_t oldID;
status_t result = Inode::Rename(fromInode, toInode, fromName, toName, false,
&id, &oldID);
if (result != B_OK)
return result;
VnodeToInode* vti;
if (oldID != 0) {
// we have overriden an inode
result = acquire_vnode(volume, oldID);
if (result == B_OK) {
result = get_vnode(volume, oldID, reinterpret_cast<void**>(&vti));
ASSERT(result == B_OK);
if (vti->Unlink(toInode->fInfo.fNames, toName))
remove_vnode(volume, oldID);
put_vnode(volume, oldID);
put_vnode(volume, oldID);
}
}
result = get_vnode(volume, id, reinterpret_cast<void**>(&vti));
if (result == B_OK) {
Inode* child = vti->Get();
if (child == NULL) {
put_vnode(volume, id);
return B_ENTRY_NOT_FOUND;
}
unremove_vnode(volume, id);
child->fInfo.fNames->RemoveName(fromInode->fInfo.fNames, fromName);
child->fInfo.fNames->AddName(toInode->fInfo.fNames, toName);
put_vnode(volume, id);
}
return B_OK;
}
static status_t
nfs4_access(fs_volume* volume, fs_vnode* vnode, int mode)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", mode = %d", volume, vti->ID(),
mode);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
return inode->Access(mode);
}
static status_t
nfs4_read_stat(fs_volume* volume, fs_vnode* vnode, struct stat* stat)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64, volume, vti->ID());
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
status_t result = inode->Stat(stat);
if (inode->GetOpenState() != NULL)
stat->st_size = inode->MaxFileSize();
return result;
}
static status_t
nfs4_write_stat(fs_volume* volume, fs_vnode* vnode, const struct stat* stat,
uint32 statMask)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", statMask = %" B_PRIu32, volume,
vti->ID(), statMask);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
return inode->WriteStat(stat, statMask);
}
static status_t
get_new_vnode(fs_volume* volume, ino_t id, VnodeToInode** _vti)
{
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
Inode* inode;
VnodeToInode* vti;
status_t result = acquire_vnode(volume, id);
if (result == B_OK) {
ASSERT(get_vnode(volume, id, reinterpret_cast<void**>(_vti)) == B_OK);
unremove_vnode(volume, id);
// Release after acquire
put_vnode(volume, id);
vti = *_vti;
if (vti->Get() == NULL) {
result = fs->GetInode(id, &inode);
if (result != B_OK) {
put_vnode(volume, id);
return result;
}
vti->Replace(inode);
}
return B_OK;
}
return get_vnode(volume, id, reinterpret_cast<void**>(_vti));
}
static status_t
nfs4_create(fs_volume* volume, fs_vnode* dir, const char* name, int openMode,
int perms, void** _cookie, ino_t* _newVnodeID)
{
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
OpenFileCookie* cookie = new OpenFileCookie(fs);
if (cookie == NULL)
return B_NO_MEMORY;
*_cookie = cookie;
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(dir->private_node);
TRACE("volume = %p, dir = %" B_PRIi64 ", name = %s, openMode = %d," \
" perms = %d", volume, vti->ID(), name, openMode, perms);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
MutexLocker createLocker(fs->CreateFileLock());
OpenDelegationData data;
status_t result = inode->Create(name, openMode, perms, cookie, &data,
_newVnodeID);
if (result != B_OK) {
delete cookie;
return result;
}
result = get_new_vnode(volume, *_newVnodeID, &vti);
if (result != B_OK) {
delete cookie;
return result;
}
VnodeToInodeLocker _child(vti);
Inode* child = vti->Get();
if (child == NULL) {
delete cookie;
put_vnode(volume, *_newVnodeID);
return B_ENTRY_NOT_FOUND;
}
child->SetOpenState(cookie->fOpenState);
if (data.fType != OPEN_DELEGATE_NONE) {
Delegation* delegation
= new(std::nothrow) Delegation(data, child,
cookie->fOpenState->fClientID);
if (delegation != NULL) {
delegation->fInfo = cookie->fOpenState->fInfo;
delegation->fFileSystem = child->GetFileSystem();
child->SetDelegation(delegation);
}
}
TRACE("*cookie = %p, *newVnodeID = %" B_PRIi64, *_cookie, *_newVnodeID);
return result;
}
static status_t
nfs4_open(fs_volume* volume, fs_vnode* vnode, int openMode, void** _cookie)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", openMode = %d", volume,
vti->ID(), openMode);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
if (inode->Type() == S_IFDIR || inode->Type() == S_IFLNK) {
*_cookie = NULL;
return B_OK;
}
FileSystem* fs = reinterpret_cast<FileSystem*>(volume->private_volume);
OpenFileCookie* cookie = new OpenFileCookie(fs);
if (cookie == NULL)
return B_NO_MEMORY;
*_cookie = cookie;
status_t result = inode->Open(openMode, cookie);
if (result != B_OK)
delete cookie;
TRACE("*cookie = %p", *_cookie);
return result;
}
static status_t
nfs4_close(fs_volume* volume, fs_vnode* vnode, void* _cookie)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p", volume, vti->ID(),
_cookie);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
if (inode->Type() == S_IFDIR || inode->Type() == S_IFLNK)
return B_OK;
Cookie* cookie = reinterpret_cast<Cookie*>(_cookie);
return cookie->CancelAll();
}
static status_t
nfs4_free_cookie(fs_volume* volume, fs_vnode* vnode, void* _cookie)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p", volume, vti->ID(),
_cookie);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
if (inode->Type() == S_IFDIR || inode->Type() == S_IFLNK)
return B_OK;
OpenFileCookie* cookie = reinterpret_cast<OpenFileCookie*>(_cookie);
inode->Close(cookie);
delete cookie;
return B_OK;
}
static status_t
nfs4_read(fs_volume* volume, fs_vnode* vnode, void* _cookie, off_t pos,
void* buffer, size_t* length)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p, pos = %" B_PRIi64 \
", length = %lu", volume, vti->ID(), _cookie, pos, *length);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
if (inode->Type() == S_IFDIR)
return B_IS_A_DIRECTORY;
if (inode->Type() == S_IFLNK)
return B_BAD_VALUE;
OpenFileCookie* cookie = reinterpret_cast<OpenFileCookie*>(_cookie);
return inode->Read(cookie, pos, buffer, length);;
}
static status_t
nfs4_write(fs_volume* volume, fs_vnode* vnode, void* _cookie, off_t pos,
const void* _buffer, size_t* length)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(vnode->private_node);
TRACE("volume = %p, vnode = %" B_PRIi64 ", cookie = %p, pos = %" B_PRIi64 \
", length = %lu", volume, vti->ID(), _cookie, pos, *length);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
if (inode->Type() == S_IFDIR)
return B_IS_A_DIRECTORY;
if (inode->Type() == S_IFLNK)
return B_BAD_VALUE;
OpenFileCookie* cookie = reinterpret_cast<OpenFileCookie*>(_cookie);
return inode->Write(cookie, pos, _buffer, length);
}
static status_t
nfs4_create_dir(fs_volume* volume, fs_vnode* parent, const char* name,
int mode)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(parent->private_node);
TRACE("volume = %p, parent = %" B_PRIi64 ", mode = %d", volume, vti->ID(),
mode);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
ino_t id;
status_t result = inode->CreateDir(name, mode, &id);
if (result != B_OK)
return result;
result = get_vnode(volume, id, reinterpret_cast<void**>(&vti));
if (result == B_OK) {
unremove_vnode(volume, id);
vti->Clear();
put_vnode(volume, id);
}
return B_OK;
}
static status_t
nfs4_remove_dir(fs_volume* volume, fs_vnode* parent, const char* name)
{
VnodeToInode* vti = reinterpret_cast<VnodeToInode*>(parent->private_node);
TRACE("volume = %p, parent = %" B_PRIi64 ", name = %s", volume, vti->ID(),
name);
VnodeToInodeLocker _(vti);
Inode* inode = vti->Get();
if (inode == NULL)
return B_ENTRY_NOT_FOUND;
ino_t id;
status_t result = inode->Remove(name, NF4DIR, &id);
if (result != B_OK)
return result;
result = acquire_vnode(volume, id);
if (result == B_OK) {
result = get_vnode(volume, id, reinterpret_cast<void**>(&vti));