static int
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
.rpc_argp = fhandle,
.rpc_resp = info,
};
int status;
dprintk("NFS call pathconf\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply pathconf: %d\n", status);
return status;
}
/*
* One function for each procedure in the NFS protocol.
*/
static int
nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
.rpc_argp = fhandle,
.rpc_resp = fattr,
};
int status;
dprintk("NFS call getattr\n");
nfs_fattr_init(fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply getattr: %d\n", status);
return status;
}
static int
nfs3_proc_read(struct inode *inode, struct rpc_cred *cred,
struct nfs_fattr *fattr, int flags,
loff_t offset, unsigned int count, void *buffer, int *eofp)
{
struct nfs_readargs arg = { NFS_FH(inode), offset, count, 1,
{{buffer, count}, {0,0}, {0,0}, {0,0},
{0,0}, {0,0}, {0,0}, {0,0}} };
struct nfs_readres res = { fattr, count, 0 };
struct rpc_message msg = { NFS3PROC_READ, &arg, &res, cred };
int status;
dprintk("NFS call read %d @ %Ld\n", count, (long long)offset);
fattr->valid = 0;
status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
dprintk("NFS reply read: %d\n", status);
*eofp = res.eof;
return status;
}
static int do_probe_callback(void *data)
{
struct nfs4_client *clp = data;
struct nfs4_callback *cb = &clp->cl_callback;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
int status;
status = rpc_call_sync(cb->cb_client, &msg, RPC_TASK_SOFT);
if (status) {
rpc_shutdown_client(cb->cb_client);
cb->cb_client = NULL;
} else
atomic_set(&cb->cb_set, 1);
put_nfs4_client(clp);
return 0;
}
static int
nfs_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_removeargs arg = {
.fh = NFS_FH(dir),
.name = *name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_REMOVE],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call remove %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply remove: %d\n", status);
return status;
}
static inline int
nfs_direct_commit_rpc(struct inode *inode, loff_t offset, size_t count,
struct nfs_writeverf *verf)
{
int result;
struct nfs_fattr fattr;
struct nfs_writeargs arg = { NFS_FH(inode), offset, count, 0, 0,
NULL };
struct nfs_writeres res = { &fattr, verf, 0 };
struct rpc_message msg = { NFS3PROC_COMMIT, &arg, &res, NULL };
fattr.valid = 0;
lock_kernel();
result = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_write_attributes(inode, &fattr);
unlock_kernel();
return result;
}
/* Returns 0 on success
* err_no on failure
*/
static int vsnfs_proc_null(struct vsnfs_server *server, int input, int *output)
{
int status;
struct vsnfs_nullargs arg = {
.dummy = input,
};
struct vsnfs_nullres res;
struct rpc_message msg = {
.rpc_proc = &vsnfs_procedures[VSNFSPROC_NULL],
.rpc_argp = &arg,
.rpc_resp = &res,
};
status = rpc_call_sync(server->cl_rpcclient, &msg, 0);
if (status == 0)
*output = res.dummy;
return status;
}
static int
nfs3_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_removeargs arg = {
.fh = NFS_FH(dir),
.name.len = name->len,
.name.name = name->name,
};
struct nfs_removeres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
dprintk("NFS call remove %s\n", name->name);
res.dir_attr = nfs_alloc_fattr();
if (res.dir_attr == NULL)
goto out;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, res.dir_attr);
nfs_free_fattr(res.dir_attr);
out:
dprintk("NFS reply remove: %d\n", status);
return status;
}
static void
nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
}
static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
{
rpc_call_start(task);
}
static int
vsnfs_proc_readdir(struct dentry *dentry, struct page *page,
unsigned int count)
{
int status;
struct inode *dir = dentry->d_inode;
struct vsnfs_readdirargs arg = {
.fh = VSNFS_FH(dir),
.count = count,
.pages = &page,
};
struct rpc_message msg = {
.rpc_proc = &vsnfs_procedures[VSNFSPROC_READDIR],
.rpc_argp = &arg,
.rpc_cred = NULL,
};
status = rpc_call_sync(VSNFS_CLIENT(dir), &msg, 0);
printk("VSNFS reply readdir: %d\n", status);
return status;
}
static int
nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.old_name = old_name,
.new_dir = NFS_FH(new_dir),
.new_name = new_name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RENAME],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_mark_for_revalidate(old_dir);
nfs_mark_for_revalidate(new_dir);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
struct iattr *sattr)
{
struct inode *inode = dentry->d_inode;
struct nfs3_sattrargs arg = {
.fh = NFS_FH(inode),
.sattr = sattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
.rpc_argp = &arg,
.rpc_resp = fattr,
};
int status;
dprintk("NFS call setattr\n");
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (status == 0)
nfs_setattr_update_inode(inode, sattr);
dprintk("NFS reply setattr: %d\n", status);
return status;
}
static int
nfs3_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs_fattr dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct nfs3_diropres res = {
.dir_attr = &dir_attr,
.fh = fhandle,
.fattr = fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call lookup %s\n", name->name);
nfs_fattr_init(&dir_attr);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
msg.rpc_argp = fhandle;
msg.rpc_resp = fattr;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
}
dprintk("NFS reply lookup: %d\n", status);
if (status >= 0)
status = nfs_refresh_inode(dir, &dir_attr);
return status;
}
static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs_fattr fattr;
struct nfs3_accessargs arg = {
.fh = NFS_FH(inode),
};
struct nfs3_accessres res = {
.fattr = &fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = entry->cred,
};
int mode = entry->mask;
int status;
dprintk("NFS call access\n");
if (mode & MAY_READ)
arg.access |= NFS3_ACCESS_READ;
if (S_ISDIR(inode->i_mode)) {
if (mode & MAY_WRITE)
arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
if (mode & MAY_EXEC)
arg.access |= NFS3_ACCESS_LOOKUP;
} else {
if (mode & MAY_WRITE)
arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
if (mode & MAY_EXEC)
arg.access |= NFS3_ACCESS_EXECUTE;
}
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_refresh_inode(inode, &fattr);
if (status == 0) {
entry->mask = 0;
if (res.access & NFS3_ACCESS_READ)
entry->mask |= MAY_READ;
if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
entry->mask |= MAY_WRITE;
if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
}
dprintk("NFS reply access: %d\n", status);
return status;
}
static int nfs3_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs_fattr fattr;
struct nfs3_readlinkargs args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
.rpc_argp = &args,
.rpc_resp = &fattr,
};
int status;
dprintk("NFS call readlink\n");
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_refresh_inode(inode, &fattr);
dprintk("NFS reply readlink: %d\n", status);
return status;
}
static int nfs3_proc_read(struct nfs_read_data *rdata)
{
int flags = rdata->flags;
struct inode * inode = rdata->inode;
struct nfs_fattr * fattr = rdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READ],
.rpc_argp = &rdata->args,
.rpc_resp = &rdata->res,
.rpc_cred = rdata->cred,
};
int status;
dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
(long long) rdata->args.offset);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
if (status >= 0)
nfs_refresh_inode(inode, fattr);
dprintk("NFS reply read: %d\n", status);
return status;
}
static int nfs3_proc_write(struct nfs_write_data *wdata)
{
int rpcflags = wdata->flags;
struct inode * inode = wdata->inode;
struct nfs_fattr * fattr = wdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
.rpc_argp = &wdata->args,
.rpc_resp = &wdata->res,
.rpc_cred = wdata->cred,
};
int status;
dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
(long long) wdata->args.offset);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags);
if (status >= 0)
nfs_post_op_update_inode(inode, fattr);
dprintk("NFS reply write: %d\n", status);
return status < 0? status : wdata->res.count;
}
static int nfs3_proc_commit(struct nfs_write_data *cdata)
{
struct inode * inode = cdata->inode;
struct nfs_fattr * fattr = cdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
.rpc_argp = &cdata->args,
.rpc_resp = &cdata->res,
.rpc_cred = cdata->cred,
};
int status;
dprintk("NFS call commit %d @ %Ld\n", cdata->args.count,
(long long) cdata->args.offset);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (status >= 0)
nfs_post_op_update_inode(inode, fattr);
dprintk("NFS reply commit: %d\n", status);
return status;
}
/*
* Create a regular file.
* For now, we don't implement O_EXCL.
*/
static int
nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
int flags, struct nameidata *nd)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr;
struct nfs_fattr dir_attr;
struct nfs3_createargs arg = {
.fh = NFS_FH(dir),
.name = dentry->d_name.name,
.len = dentry->d_name.len,
.sattr = sattr,
};
struct nfs3_diropres res = {
.dir_attr = &dir_attr,
.fh = &fhandle,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE],
.rpc_argp = &arg,
.rpc_resp = &res,
};
mode_t mode = sattr->ia_mode;
int status;
dprintk("NFS call create %s\n", dentry->d_name.name);
arg.createmode = NFS3_CREATE_UNCHECKED;
if (flags & O_EXCL) {
arg.createmode = NFS3_CREATE_EXCLUSIVE;
arg.verifier[0] = jiffies;
arg.verifier[1] = current->pid;
}
sattr->ia_mode &= ~current->fs->umask;
again:
nfs_fattr_init(&dir_attr);
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_refresh_inode(dir, &dir_attr);
/* If the server doesn't support the exclusive creation semantics,
* try again with simple 'guarded' mode. */
if (status == NFSERR_NOTSUPP) {
switch (arg.createmode) {
case NFS3_CREATE_EXCLUSIVE:
arg.createmode = NFS3_CREATE_GUARDED;
break;
case NFS3_CREATE_GUARDED:
arg.createmode = NFS3_CREATE_UNCHECKED;
break;
case NFS3_CREATE_UNCHECKED:
goto out;
}
goto again;
}
if (status == 0)
status = nfs_instantiate(dentry, &fhandle, &fattr);
if (status != 0)
goto out;
/* When we created the file with exclusive semantics, make
* sure we set the attributes afterwards. */
if (arg.createmode == NFS3_CREATE_EXCLUSIVE) {
dprintk("NFS call setattr (post-create)\n");
if (!(sattr->ia_valid & ATTR_ATIME_SET))
sattr->ia_valid |= ATTR_ATIME;
if (!(sattr->ia_valid & ATTR_MTIME_SET))
sattr->ia_valid |= ATTR_MTIME;
/* Note: we could use a guarded setattr here, but I'm
* not sure this buys us anything (and I'd have
* to revamp the NFSv3 XDR code) */
status = nfs3_proc_setattr(dentry, &fattr, sattr);
if (status == 0)
nfs_setattr_update_inode(dentry->d_inode, sattr);
nfs_refresh_inode(dentry->d_inode, &fattr);
dprintk("NFS reply setattr (post-create): %d\n", status);
}
if (status != 0)
goto out;
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
dprintk("NFS reply create: %d\n", status);
return status;
}
static int
nfs3_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_fattr dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
.rpc_argp = &arg,
.rpc_resp = &dir_attr,
};
int status;
dprintk("NFS call remove %s\n", name->name);
nfs_fattr_init(&dir_attr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, &dir_attr);
dprintk("NFS reply remove: %d\n", status);
return status;
}
static int
nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
{
struct unlinkxdr {
struct nfs3_diropargs arg;
struct nfs_fattr res;
} *ptr;
ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL);
if (!ptr)
return -ENOMEM;
ptr->arg.fh = NFS_FH(dir->d_inode);
ptr->arg.name = name->name;
ptr->arg.len = name->len;
nfs_fattr_init(&ptr->res);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
msg->rpc_argp = &ptr->arg;
msg->rpc_resp = &ptr->res;
return 0;
}
static int
nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
{
struct rpc_message *msg = &task->tk_msg;
struct nfs_fattr *dir_attr;
if (nfs3_async_handle_jukebox(task, dir->d_inode))
return 1;
if (msg->rpc_argp) {
dir_attr = (struct nfs_fattr*)msg->rpc_resp;
nfs_post_op_update_inode(dir->d_inode, dir_attr);
kfree(msg->rpc_argp);
}
return 0;
}
static int
nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_fattr old_dir_attr, new_dir_attr;
struct nfs3_renameargs arg = {
.fromfh = NFS_FH(old_dir),
.fromname = old_name->name,
.fromlen = old_name->len,
.tofh = NFS_FH(new_dir),
.toname = new_name->name,
.tolen = new_name->len
};
struct nfs3_renameres res = {
.fromattr = &old_dir_attr,
.toattr = &new_dir_attr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
nfs_fattr_init(&old_dir_attr);
nfs_fattr_init(&new_dir_attr);
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_post_op_update_inode(old_dir, &old_dir_attr);
nfs_post_op_update_inode(new_dir, &new_dir_attr);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_fattr dir_attr, fattr;
struct nfs3_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct nfs3_linkres res = {
.dir_attr = &dir_attr,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call link %s\n", name->name);
nfs_fattr_init(&dir_attr);
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_post_op_update_inode(dir, &dir_attr);
nfs_post_op_update_inode(inode, &fattr);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
struct iattr *sattr, struct nfs_fh *fhandle,
struct nfs_fattr *fattr)
{
struct nfs_fattr dir_attr;
struct nfs3_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = name->name,
.fromlen = name->len,
.topath = path->name,
.tolen = path->len,
.sattr = sattr
};
struct nfs3_diropres res = {
.dir_attr = &dir_attr,
.fh = fhandle,
.fattr = fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
if (path->len > NFS3_MAXPATHLEN)
return -ENAMETOOLONG;
dprintk("NFS call symlink %s -> %s\n", name->name, path->name);
nfs_fattr_init(&dir_attr);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, &dir_attr);
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr, dir_attr;
struct nfs3_mkdirargs arg = {
.fh = NFS_FH(dir),
.name = dentry->d_name.name,
.len = dentry->d_name.len,
.sattr = sattr
};
struct nfs3_diropres res = {
.dir_attr = &dir_attr,
.fh = &fhandle,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int mode = sattr->ia_mode;
int status;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
sattr->ia_mode &= ~current->fs->umask;
nfs_fattr_init(&dir_attr);
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, &dir_attr);
if (status != 0)
goto out;
status = nfs_instantiate(dentry, &fhandle, &fattr);
if (status != 0)
goto out;
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_fattr dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
.rpc_argp = &arg,
.rpc_resp = &dir_attr,
};
int status;
dprintk("NFS call rmdir %s\n", name->name);
nfs_fattr_init(&dir_attr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, &dir_attr);
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass the user buffer
* to the encode function, which installs it in the receive iovec.
* The decode function itself doesn't perform any decoding, it just makes
* sure the reply is syntactically correct.
*
* Also note that this implementation handles both plain readdir and
* readdirplus.
*/
static int
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page *page, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs_fattr dir_attr;
u32 *verf = NFS_COOKIEVERF(dir);
struct nfs3_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.verf = {verf[0], verf[1]},
.plus = plus,
.count = count,
.pages = &page
};
struct nfs3_readdirres res = {
.dir_attr = &dir_attr,
.verf = verf,
.plus = plus
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = cred
};
int status;
lock_kernel();
if (plus)
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
dprintk("NFS call readdir%s %d\n",
plus? "plus" : "", (unsigned int) cookie);
nfs_fattr_init(&dir_attr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_refresh_inode(dir, &dir_attr);
dprintk("NFS reply readdir: %d\n", status);
unlock_kernel();
return status;
}
static int
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
dev_t rdev)
{
struct nfs_fh fh;
struct nfs_fattr fattr, dir_attr;
struct nfs3_mknodargs arg = {
.fh = NFS_FH(dir),
.name = dentry->d_name.name,
.len = dentry->d_name.len,
.sattr = sattr,
.rdev = rdev
};
struct nfs3_diropres res = {
.dir_attr = &dir_attr,
.fh = &fh,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD],
.rpc_argp = &arg,
.rpc_resp = &res,
};
mode_t mode = sattr->ia_mode;
int status;
switch (sattr->ia_mode & S_IFMT) {
case S_IFBLK: arg.type = NF3BLK; break;
case S_IFCHR: arg.type = NF3CHR; break;
case S_IFIFO: arg.type = NF3FIFO; break;
case S_IFSOCK: arg.type = NF3SOCK; break;
default: return -EINVAL;
}
dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
MAJOR(rdev), MINOR(rdev));
sattr->ia_mode &= ~current->fs->umask;
nfs_fattr_init(&dir_attr);
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, &dir_attr);
if (status != 0)
goto out;
status = nfs_instantiate(dentry, &fh, &fattr);
if (status != 0)
goto out;
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
dprintk("NFS reply mknod: %d\n", status);
return status;
}
static int
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
.rpc_argp = fhandle,
.rpc_resp = stat,
};
int status;
dprintk("NFS call fsstat\n");
nfs_fattr_init(stat->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply statfs: %d\n", status);
return status;
}
static int
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
.rpc_argp = fhandle,
.rpc_resp = info,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client_sys, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
return status;
}
static int
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
.rpc_argp = fhandle,
.rpc_resp = info,
};
int status;
dprintk("NFS call pathconf\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply pathconf: %d\n", status);
return status;
}
static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
/* Call back common NFS readpage processing */
if (task->tk_status >= 0)
nfs_refresh_inode(data->inode, &data->fattr);
return 0;
}
static void nfs3_proc_read_setup(struct nfs_read_data *data)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
}
static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
if (task->tk_status >= 0)
nfs_post_op_update_inode(data->inode, data->res.fattr);
return 0;
}
static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
data->args.stable = NFS_UNSTABLE;
if (how & FLUSH_STABLE) {
data->args.stable = NFS_FILE_SYNC;
if (NFS_I(data->inode)->ncommit)
data->args.stable = NFS_DATA_SYNC;
}
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
}
static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
if (task->tk_status >= 0)
nfs_post_op_update_inode(data->inode, data->res.fattr);
return 0;
}
static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
}
static int
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
}
struct nfs_rpc_ops nfs_v3_clientops = {
.version = 3, /* protocol version */
.dentry_ops = &nfs_dentry_operations,
.dir_inode_ops = &nfs3_dir_inode_operations,
.file_inode_ops = &nfs3_file_inode_operations,
.getroot = nfs3_proc_get_root,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
.access = nfs3_proc_access,
.readlink = nfs3_proc_readlink,
.read = nfs3_proc_read,
.write = nfs3_proc_write,
.commit = nfs3_proc_commit,
.create = nfs3_proc_create,
.remove = nfs3_proc_remove,
.unlink_setup = nfs3_proc_unlink_setup,
.unlink_done = nfs3_proc_unlink_done,
.rename = nfs3_proc_rename,
.link = nfs3_proc_link,
.symlink = nfs3_proc_symlink,
.mkdir = nfs3_proc_mkdir,
.rmdir = nfs3_proc_rmdir,
.readdir = nfs3_proc_readdir,
.mknod = nfs3_proc_mknod,
.statfs = nfs3_proc_statfs,
.fsinfo = nfs3_proc_fsinfo,
.pathconf = nfs3_proc_pathconf,
.decode_dirent = nfs3_decode_dirent,
.read_setup = nfs3_proc_read_setup,
.read_done = nfs3_read_done,
.write_setup = nfs3_proc_write_setup,
.write_done = nfs3_write_done,
.commit_setup = nfs3_proc_commit_setup,
.commit_done = nfs3_commit_done,
.file_open = nfs_open,
.file_release = nfs_release,
.lock = nfs3_proc_lock,
.clear_acl_cache = nfs3_forget_cached_acls,
};
static int do_probe_callback(void *data)
{
struct nfs4_client *clp = data;
struct sockaddr_in addr;
struct nfs4_callback *cb = &clp->cl_callback;
struct rpc_timeout timeparms = {
.to_initval = (NFSD_LEASE_TIME/4) * HZ,
.to_retries = 5,
.to_maxval = (NFSD_LEASE_TIME/2) * HZ,
.to_exponential = 1,
};
struct rpc_program * program = &cb->cb_program;
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
.address = (struct sockaddr *)&addr,
.addrsize = sizeof(addr),
.timeout = &timeparms,
.program = program,
.version = nfs_cb_version[1]->number,
.authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
.flags = (RPC_CLNT_CREATE_NOPING),
};
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
struct rpc_clnt *client;
int status;
/* Initialize address */
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(cb->cb_port);
addr.sin_addr.s_addr = htonl(cb->cb_addr);
/* Initialize rpc_program */
program->name = "nfs4_cb";
program->number = cb->cb_prog;
program->nrvers = ARRAY_SIZE(nfs_cb_version);
program->version = nfs_cb_version;
program->stats = &cb->cb_stat;
/* Initialize rpc_stat */
memset(program->stats, 0, sizeof(cb->cb_stat));
program->stats->program = program;
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client\n");
status = PTR_ERR(client);
goto out_err;
}
status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
if (status)
goto out_release_client;
cb->cb_client = client;
atomic_set(&cb->cb_set, 1);
put_nfs4_client(clp);
return 0;
out_release_client:
rpc_shutdown_client(client);
out_err:
put_nfs4_client(clp);
dprintk("NFSD: warning: no callback path to client %.*s\n",
(int)clp->cl_name.len, clp->cl_name.data);
return status;
}
/*
* Set up the callback client and put a NFSPROC4_CB_NULL on the wire...
*/
void
nfsd4_probe_callback(struct nfs4_client *clp)
{
struct task_struct *t;
BUG_ON(atomic_read(&clp->cl_callback.cb_set));
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe");
if (IS_ERR(t))
atomic_dec(&clp->cl_count);
return;
}
/*
* called with dp->dl_count inc'ed.
* nfs4_lock_state() may or may not have been called.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
{
struct nfs4_client *clp = dp->dl_client;
struct rpc_clnt *clnt = clp->cl_callback.cb_client;
struct nfs4_cb_recall *cbr = &dp->dl_recall;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_argp = cbr,
};
int retries = 1;
int status = 0;
cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */
cbr->cbr_dp = dp;
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
while (retries--) {
switch (status) {
case -EIO:
/* Network partition? */
atomic_set(&clp->cl_callback.cb_set, 0);
case -EBADHANDLE:
case -NFS4ERR_BAD_STATEID:
/* Race: client probably got cb_recall
* before open reply granting delegation */
break;
default:
goto out_put_cred;
}
ssleep(2);
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
}
out_put_cred:
/*
* Success or failure, now we're either waiting for lease expiration
* or deleg_return.
*/
put_nfs4_client(clp);
nfs4_put_delegation(dp);
return;
}
static int
nfs_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_removeargs arg = {
.fh = NFS_FH(dir),
.name.len = name->len,
.name.name = name->name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_REMOVE],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call remove %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply remove: %d\n", status);
return status;
}
static void
nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
}
static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir)
{
if (nfs_async_handle_expired_key(task))
return 0;
nfs_mark_for_revalidate(dir);
return 1;
}
static void
nfs_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME];
}
static int
nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
struct inode *new_dir)
{
if (nfs_async_handle_expired_key(task))
return 0;
nfs_mark_for_revalidate(old_dir);
nfs_mark_for_revalidate(new_dir);
return 1;
}
static int
nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.old_name = old_name,
.new_dir = NFS_FH(new_dir),
.new_name = new_name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RENAME],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_mark_for_revalidate(old_dir);
nfs_mark_for_revalidate(new_dir);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LINK],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call link %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_mark_for_revalidate(inode);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs_fh *fh;
struct nfs_fattr *fattr;
struct nfs_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = dentry->d_name.name,
.fromlen = dentry->d_name.len,
.pages = &page,
.pathlen = len,
.sattr = sattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_SYMLINK],
.rpc_argp = &arg,
};
int status = -ENAMETOOLONG;
dprintk("NFS call symlink %s\n", dentry->d_name.name);
if (len > NFS2_MAXPATHLEN)
goto out;
fh = nfs_alloc_fhandle();
fattr = nfs_alloc_fattr();
status = -ENOMEM;
if (fh == NULL || fattr == NULL)
goto out_free;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
/*
* V2 SYMLINK requests don't return any attributes. Setting the
* filehandle size to zero indicates to nfs_instantiate that it
* should fill in the data with a LOOKUP call on the wire.
*/
if (status == 0)
status = nfs_instantiate(dentry, fh, fattr);
out_free:
nfs_free_fattr(fattr);
nfs_free_fhandle(fh);
out:
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_MKDIR],
};
int status = -ENOMEM;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
data = nfs_alloc_createdata(dir, dentry, sattr);
if (data == NULL)
goto out;
msg.rpc_argp = &data->arg;
msg.rpc_resp = &data->res;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
nfs_free_createdata(data);
out:
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RMDIR],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rmdir %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass a temporary
* buffer to the encode function, which installs it in the receive
* the receive iovec. The decode function just parses the reply to make
* sure it is syntactically correct; the entries itself are decoded
* from nfs_readdir by calling the decode_entry function directly.
*/
static int
nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.count = count,
.pages = pages,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READDIR],
.rpc_argp = &arg,
.rpc_cred = cred,
};
int status;
dprintk("NFS call readdir %d\n", (unsigned int)cookie);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
dprintk("NFS reply readdir: %d\n", status);
return status;
}
static int
nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call statfs\n");
nfs_fattr_init(stat->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply statfs: %d\n", status);
if (status)
goto out;
stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize;
stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
stat->tfiles = 0;
stat->ffiles = 0;
stat->afiles = 0;
out:
return status;
}
static int
nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
if (status)
goto out;
info->rtmax = NFS_MAXDATA;
info->rtpref = fsinfo.tsize;
info->rtmult = fsinfo.bsize;
info->wtmax = NFS_MAXDATA;
info->wtpref = fsinfo.tsize;
info->wtmult = fsinfo.bsize;
info->dtpref = fsinfo.tsize;
info->maxfilesize = 0x7FFFFFFF;
info->lease_time = 0;
out:
return status;
}
static int
nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
info->max_link = 0;
info->max_namelen = NFS2_MAXNAMLEN;
return 0;
}
static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
if (nfs_async_handle_expired_key(task))
return -EAGAIN;
nfs_invalidate_atime(data->inode);
if (task->tk_status >= 0) {
nfs_refresh_inode(data->inode, data->res.fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
if (data->args.offset + data->args.count >= data->res.fattr->size)
data->res.eof = 1;
}
return 0;
}
static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_READ];
}
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs_async_handle_expired_key(task))
return -EAGAIN;
if (task->tk_status >= 0)
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
return 0;
}
static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
data->args.stable = NFS_FILE_SYNC;
msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE];
}
static void
nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
BUG();
}
static int
nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
struct inode *inode = filp->f_path.dentry->d_inode;
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
}
/* Helper functions for NFS lock bounds checking */
#define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL)
static int nfs_lock_check_bounds(const struct file_lock *fl)
{
__s32 start, end;
start = (__s32)fl->fl_start;
if ((loff_t)start != fl->fl_start)
goto out_einval;
if (fl->fl_end != OFFSET_MAX) {
end = (__s32)fl->fl_end;
if ((loff_t)end != fl->fl_end)
goto out_einval;
} else
end = NFS_LOCK32_OFFSET_MAX;
if (start < 0 || start > end)
goto out_einval;
return 0;
out_einval:
return -EINVAL;
}
const struct nfs_rpc_ops nfs_v2_clientops = {
.version = 2, /* protocol version */
.dentry_ops = &nfs_dentry_operations,
.dir_inode_ops = &nfs_dir_inode_operations,
.file_inode_ops = &nfs_file_inode_operations,
.getroot = nfs_proc_get_root,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
.access = NULL, /* access */
.readlink = nfs_proc_readlink,
.create = nfs_proc_create,
.remove = nfs_proc_remove,
.unlink_setup = nfs_proc_unlink_setup,
.unlink_done = nfs_proc_unlink_done,
.rename = nfs_proc_rename,
.rename_setup = nfs_proc_rename_setup,
.rename_done = nfs_proc_rename_done,
.link = nfs_proc_link,
.symlink = nfs_proc_symlink,
.mkdir = nfs_proc_mkdir,
.rmdir = nfs_proc_rmdir,
.readdir = nfs_proc_readdir,
.mknod = nfs_proc_mknod,
.statfs = nfs_proc_statfs,
.fsinfo = nfs_proc_fsinfo,
.pathconf = nfs_proc_pathconf,
.decode_dirent = nfs2_decode_dirent,
.read_setup = nfs_proc_read_setup,
.read_done = nfs_read_done,
.write_setup = nfs_proc_write_setup,
.write_done = nfs_write_done,
.commit_setup = nfs_proc_commit_setup,
.lock = nfs_proc_lock,
.lock_check_bounds = nfs_lock_check_bounds,
.close_context = nfs_close_context,
.init_client = nfs_init_client,
};
static int
nfs_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr,
struct nfs4_label *label)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct nfs_diropok res = {
.fh = fhandle,
.fattr = fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LOOKUP],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call lookup %s\n", name->name);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
static int nfs_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs_readlinkargs args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READLINK],
.rpc_argp = &args,
};
int status;
dprintk("NFS call readlink\n");
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
dprintk("NFS reply readlink: %d\n", status);
return status;
}
struct nfs_createdata {
struct nfs_createargs arg;
struct nfs_diropok res;
struct nfs_fh fhandle;
struct nfs_fattr fattr;
};
static struct nfs_createdata *nfs_alloc_createdata(struct inode *dir,
struct dentry *dentry, struct iattr *sattr)
{
struct nfs_createdata *data;
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (data != NULL) {
data->arg.fh = NFS_FH(dir);
data->arg.name = dentry->d_name.name;
data->arg.len = dentry->d_name.len;
data->arg.sattr = sattr;
nfs_fattr_init(&data->fattr);
data->fhandle.size = 0;
data->res.fh = &data->fhandle;
data->res.fattr = &data->fattr;
}
return data;
};
static void nfs_free_createdata(const struct nfs_createdata *data)
{
kfree(data);
}
if (args.len > NFS_ACL_INLINE_BUFSIZE) {
unsigned int npages = 1 + ((args.len - 1) >> PAGE_SHIFT);
status = -ENOMEM;
do {
args.pages[args.npages] = alloc_page(GFP_KERNEL);
if (args.pages[args.npages] == NULL)
goto out_freepages;
args.npages++;
} while (args.npages < npages);
}
dprintk("NFS call setacl\n");
msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL];
nfs_fattr_init(&fattr);
status = rpc_call_sync(server->client_acl, &msg, 0);
nfs_access_zap_cache(inode);
nfs_zap_acl_cache(inode);
dprintk("NFS reply setacl: %d\n", status);
switch (status) {
case 0:
status = nfs_refresh_inode(inode, &fattr);
nfs3_cache_acls(inode, acl, dfacl);
break;
case -EPFNOSUPPORT:
case -EPROTONOSUPPORT:
dprintk("NFS_V3_ACL SETACL RPC not supported"
"(will not retry)\n");
server->caps &= ~NFS_CAP_ACLS;
case -ENOTSUPP:
static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
struct posix_acl *dfacl)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_fattr fattr;
struct page *pages[NFSACL_MAXPAGES] = { };
struct nfs3_setaclargs args = {
.inode = inode,
.mask = NFS_ACL,
.acl_access = acl,
.pages = pages,
};
struct rpc_message msg = {
.rpc_argp = &args,
.rpc_resp = &fattr,
};
int status, count;
status = -EOPNOTSUPP;
if (!nfs_server_capable(inode, NFS_CAP_ACLS))
goto out;
/* We are doing this here, because XDR marshalling can only
return -ENOMEM. */
status = -ENOSPC;
if (acl != NULL && acl->a_count > NFS_ACL_MAX_ENTRIES)
goto out;
if (dfacl != NULL && dfacl->a_count > NFS_ACL_MAX_ENTRIES)
goto out;
if (S_ISDIR(inode->i_mode)) {
args.mask |= NFS_DFACL;
args.acl_default = dfacl;
}
dprintk("NFS call setacl\n");
nfs_begin_data_update(inode);
msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL];
status = rpc_call_sync(server->client_acl, &msg, 0);
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS;
spin_unlock(&inode->i_lock);
nfs_end_data_update(inode);
dprintk("NFS reply setacl: %d\n", status);
/* pages may have been allocated at the xdr layer. */
for (count = 0; count < NFSACL_MAXPAGES && args.pages[count]; count++)
__free_page(args.pages[count]);
switch (status) {
case 0:
status = nfs_refresh_inode(inode, &fattr);
nfs3_cache_acls(inode, acl, dfacl);
break;
case -EPFNOSUPPORT:
case -EPROTONOSUPPORT:
dprintk("NFS_V3_ACL SETACL RPC not supported"
"(will not retry)\n");
server->caps &= ~NFS_CAP_ACLS;
case -ENOTSUPP:
status = -EOPNOTSUPP;
}
out:
return status;
}
static int
nfs3_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_removeargs arg = {
.fh = NFS_FH(dir),
.name.len = name->len,
.name.name = name->name,
};
struct nfs_removeres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
dprintk("NFS call remove %s\n", name->name);
res.dir_attr = nfs_alloc_fattr();
if (res.dir_attr == NULL)
goto out;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, res.dir_attr);
nfs_free_fattr(res.dir_attr);
out:
dprintk("NFS reply remove: %d\n", status);
return status;
}
static void
nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
}
static int
nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
{
struct nfs_removeres *res;
if (nfs3_async_handle_jukebox(task, dir))
return 0;
res = task->tk_msg.rpc_resp;
nfs_post_op_update_inode(dir, res->dir_attr);
return 1;
}
static void
nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
}
static int
nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
struct inode *new_dir)
{
struct nfs_renameres *res;
if (nfs3_async_handle_jukebox(task, old_dir))
return 0;
res = task->tk_msg.rpc_resp;
nfs_post_op_update_inode(old_dir, res->old_fattr);
nfs_post_op_update_inode(new_dir, res->new_fattr);
return 1;
}
static int
nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.old_name = old_name,
.new_dir = NFS_FH(new_dir),
.new_name = new_name,
};
struct nfs_renameres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
res.old_fattr = nfs_alloc_fattr();
res.new_fattr = nfs_alloc_fattr();
if (res.old_fattr == NULL || res.new_fattr == NULL)
goto out;
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_post_op_update_inode(old_dir, res.old_fattr);
nfs_post_op_update_inode(new_dir, res.new_fattr);
out:
nfs_free_fattr(res.old_fattr);
nfs_free_fattr(res.new_fattr);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs3_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct nfs3_linkres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
dprintk("NFS call link %s\n", name->name);
res.fattr = nfs_alloc_fattr();
res.dir_attr = nfs_alloc_fattr();
if (res.fattr == NULL || res.dir_attr == NULL)
goto out;
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_post_op_update_inode(dir, res.dir_attr);
nfs_post_op_update_inode(inode, res.fattr);
out:
nfs_free_fattr(res.dir_attr);
nfs_free_fattr(res.fattr);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs3_createdata *data;
int status = -ENOMEM;
if (len > NFS3_MAXPATHLEN)
return -ENAMETOOLONG;
dprintk("NFS call symlink %s\n", dentry->d_name.name);
data = nfs3_alloc_createdata();
if (data == NULL)
goto out;
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
data->arg.symlink.fromfh = NFS_FH(dir);
data->arg.symlink.fromname = dentry->d_name.name;
data->arg.symlink.fromlen = dentry->d_name.len;
data->arg.symlink.pages = &page;
data->arg.symlink.pathlen = len;
data->arg.symlink.sattr = sattr;
status = nfs3_do_create(dir, dentry, data);
nfs3_free_createdata(data);
out:
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs3_createdata *data;
int mode = sattr->ia_mode;
int status = -ENOMEM;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
sattr->ia_mode &= ~current_umask();
data = nfs3_alloc_createdata();
if (data == NULL)
goto out;
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
data->arg.mkdir.fh = NFS_FH(dir);
data->arg.mkdir.name = dentry->d_name.name;
data->arg.mkdir.len = dentry->d_name.len;
data->arg.mkdir.sattr = sattr;
status = nfs3_do_create(dir, dentry, data);
if (status != 0)
goto out;
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
nfs3_free_createdata(data);
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_fattr *dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
.rpc_argp = &arg,
};
int status = -ENOMEM;
dprintk("NFS call rmdir %s\n", name->name);
dir_attr = nfs_alloc_fattr();
if (dir_attr == NULL)
goto out;
msg.rpc_resp = dir_attr;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, dir_attr);
nfs_free_fattr(dir_attr);
out:
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass the user buffer
* to the encode function, which installs it in the receive iovec.
* The decode function itself doesn't perform any decoding, it just makes
* sure the reply is syntactically correct.
*
* Also note that this implementation handles both plain readdir and
* readdirplus.
*/
static int
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
__be32 *verf = NFS_COOKIEVERF(dir);
struct nfs3_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.verf = {verf[0], verf[1]},
.plus = plus,
.count = count,
.pages = pages
};
struct nfs3_readdirres res = {
.verf = verf,
.plus = plus
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = cred
};
int status = -ENOMEM;
if (plus)
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
dprintk("NFS call readdir%s %d\n",
plus? "plus" : "", (unsigned int) cookie);
res.dir_attr = nfs_alloc_fattr();
if (res.dir_attr == NULL)
goto out;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
nfs_refresh_inode(dir, res.dir_attr);
nfs_free_fattr(res.dir_attr);
out:
dprintk("NFS reply readdir%s: %d\n",
plus? "plus" : "", status);
return status;
}
static int
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
dev_t rdev)
{
struct nfs3_createdata *data;
mode_t mode = sattr->ia_mode;
int status = -ENOMEM;
dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
MAJOR(rdev), MINOR(rdev));
sattr->ia_mode &= ~current_umask();
data = nfs3_alloc_createdata();
if (data == NULL)
goto out;
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
data->arg.mknod.fh = NFS_FH(dir);
data->arg.mknod.name = dentry->d_name.name;
data->arg.mknod.len = dentry->d_name.len;
data->arg.mknod.sattr = sattr;
data->arg.mknod.rdev = rdev;
switch (sattr->ia_mode & S_IFMT) {
case S_IFBLK:
data->arg.mknod.type = NF3BLK;
break;
case S_IFCHR:
data->arg.mknod.type = NF3CHR;
break;
case S_IFIFO:
data->arg.mknod.type = NF3FIFO;
break;
case S_IFSOCK:
data->arg.mknod.type = NF3SOCK;
break;
default:
status = -EINVAL;
goto out;
}
status = nfs3_do_create(dir, dentry, data);
if (status != 0)
goto out;
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
out:
nfs3_free_createdata(data);
dprintk("NFS reply mknod: %d\n", status);
return status;
}
static int
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
.rpc_argp = fhandle,
.rpc_resp = stat,
};
int status;
dprintk("NFS call fsstat\n");
nfs_fattr_init(stat->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply fsstat: %d\n", status);
return status;
}
static int
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
.rpc_argp = fhandle,
.rpc_resp = info,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(client, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
return status;
}
/*
* Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
* nfs_create_server
*/
static int
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
int status;
status = do_proc_fsinfo(server->client, fhandle, info);
if (status && server->nfs_client->cl_rpcclient != server->client)
status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
return status;
}
static int
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
.rpc_argp = fhandle,
.rpc_resp = info,
};
int status;
dprintk("NFS call pathconf\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply pathconf: %d\n", status);
return status;
}
static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
nfs_invalidate_atime(data->inode);
nfs_refresh_inode(data->inode, &data->fattr);
return 0;
}
static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
}
static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
if (task->tk_status >= 0)
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
return 0;
}
static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
}
static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
nfs_refresh_inode(data->inode, data->res.fattr);
return 0;
}
static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
}
static int
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
struct inode *inode = filp->f_path.dentry->d_inode;
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
}
const struct nfs_rpc_ops nfs_v3_clientops = {
.version = 3, /* protocol version */
.dentry_ops = &nfs_dentry_operations,
.dir_inode_ops = &nfs3_dir_inode_operations,
.file_inode_ops = &nfs3_file_inode_operations,
.file_ops = &nfs_file_operations,
.getroot = nfs3_proc_get_root,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
.access = nfs3_proc_access,
.readlink = nfs3_proc_readlink,
.create = nfs3_proc_create,
.remove = nfs3_proc_remove,
.unlink_setup = nfs3_proc_unlink_setup,
.unlink_done = nfs3_proc_unlink_done,
.rename = nfs3_proc_rename,
.rename_setup = nfs3_proc_rename_setup,
.rename_done = nfs3_proc_rename_done,
.link = nfs3_proc_link,
.symlink = nfs3_proc_symlink,
.mkdir = nfs3_proc_mkdir,
.rmdir = nfs3_proc_rmdir,
.readdir = nfs3_proc_readdir,
.mknod = nfs3_proc_mknod,
.statfs = nfs3_proc_statfs,
.fsinfo = nfs3_proc_fsinfo,
.pathconf = nfs3_proc_pathconf,
.decode_dirent = nfs3_decode_dirent,
.read_setup = nfs3_proc_read_setup,
.read_done = nfs3_read_done,
.write_setup = nfs3_proc_write_setup,
.write_done = nfs3_write_done,
.commit_setup = nfs3_proc_commit_setup,
.commit_done = nfs3_commit_done,
.lock = nfs3_proc_lock,
.clear_acl_cache = nfs3_forget_cached_acls,
.close_context = nfs_close_context,
.init_client = nfs_init_client,
};
.rpc_resp = info,
};
int status;
dprintk("%s: call fsinfo\n", __func__);
nfs_fattr_init(info->fattr);
status = rpc_call_sync(client, &msg, 0);
dprintk("%s: reply fsinfo: %d\n", __func__, status);
<<<<<<< HEAD
if (status == 0 && !(info->fattr->valid & NFS_ATTR_FATTR)) {
=======
if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
>>>>>>> 296c66da8a02d52243f45b80521febece5ed498a
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
msg.rpc_resp = info->fattr;
status = rpc_call_sync(client, &msg, 0);
dprintk("%s: reply getattr: %d\n", __func__, status);
}
return status;
}
/*
* Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
*/
static int
nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
int status;
status = do_proc_get_root(server->client, fhandle, info);
static int
nfs3_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr,
struct nfs4_label *label)
{
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct nfs3_diropres res = {
.fh = fhandle,
.fattr = fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call lookup %s\n", name->name);
res.dir_attr = nfs_alloc_fattr();
if (res.dir_attr == NULL)
return -ENOMEM;
nfs_fattr_init(fattr);
zql_control_test(NFS_SERVER(dir));
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_refresh_inode(dir, res.dir_attr);
if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
msg.rpc_argp = fhandle;
msg.rpc_resp = fattr;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
}
nfs_free_fattr(res.dir_attr);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs3_accessargs arg = {
.fh = NFS_FH(inode),
};
struct nfs3_accessres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = entry->cred,
};
int mode = entry->mask;
int status = -ENOMEM;
dprintk("NFS call access\n");
if (mode & MAY_READ)
arg.access |= NFS3_ACCESS_READ;
if (S_ISDIR(inode->i_mode)) {
if (mode & MAY_WRITE)
arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
if (mode & MAY_EXEC)
arg.access |= NFS3_ACCESS_LOOKUP;
} else {
if (mode & MAY_WRITE)
arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
if (mode & MAY_EXEC)
arg.access |= NFS3_ACCESS_EXECUTE;
}
res.fattr = nfs_alloc_fattr();
if (res.fattr == NULL)
goto out;
zql_control_test(NFS_SERVER(inode));
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_refresh_inode(inode, res.fattr);
if (status == 0) {
entry->mask = 0;
if (res.access & NFS3_ACCESS_READ)
entry->mask |= MAY_READ;
if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
entry->mask |= MAY_WRITE;
if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
}
nfs_free_fattr(res.fattr);
out:
dprintk("NFS reply access: %d\n", status);
return status;
}
static int nfs3_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs_fattr *fattr;
struct nfs3_readlinkargs args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
.rpc_argp = &args,
};
int status = -ENOMEM;
dprintk("NFS call readlink\n");
fattr = nfs_alloc_fattr();
if (fattr == NULL)
goto out;
msg.rpc_resp = fattr;
zql_control_test(NFS_SERVER(inode));
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_refresh_inode(inode, fattr);
nfs_free_fattr(fattr);
out:
dprintk("NFS reply readlink: %d\n", status);
return status;
}
struct nfs3_createdata {
struct rpc_message msg;
union {
struct nfs3_createargs create;
struct nfs3_mkdirargs mkdir;
struct nfs3_symlinkargs symlink;
struct nfs3_mknodargs mknod;
} arg;
struct nfs3_diropres res;
struct nfs_fh fh;
struct nfs_fattr fattr;
struct nfs_fattr dir_attr;
};
static struct nfs3_createdata *nfs3_alloc_createdata(void)
{
struct nfs3_createdata *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data != NULL) {
data->msg.rpc_argp = &data->arg;
data->msg.rpc_resp = &data->res;
data->res.fh = &data->fh;
data->res.fattr = &data->fattr;
data->res.dir_attr = &data->dir_attr;
nfs_fattr_init(data->res.fattr);
nfs_fattr_init(data->res.dir_attr);
}
return data;
}
static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
{
int status;
status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
nfs_post_op_update_inode(dir, data->res.dir_attr);
if (status == 0)
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
return status;
}
static void nfs3_free_createdata(struct nfs3_createdata *data)
{
kfree(data);
}
/*
* Generic NLM call
*/
int
nlmclnt_call(struct nlm_rqst *req, u32 proc)
{
struct nlm_host *host = req->a_host;
struct rpc_clnt *clnt;
struct nlm_args *argp = &req->a_args;
struct nlm_res *resp = &req->a_res;
struct file *filp = argp->lock.fl.fl_file;
struct rpc_message msg = {
.rpc_argp = argp,
.rpc_resp = resp,
};
int status;
dprintk("lockd: call procedure %d on %s\n",
(int)proc, host->h_name);
if (filp)
msg.rpc_cred = nfs_file_cred(filp);
do {
if (host->h_reclaiming && !argp->reclaim)
goto in_grace_period;
/* If we have no RPC client yet, create one. */
if ((clnt = nlm_bind_host(host)) == NULL)
return -ENOLCK;
msg.rpc_proc = &clnt->cl_procinfo[proc];
/* Perform the RPC call. If an error occurs, try again */
if ((status = rpc_call_sync(clnt, &msg, 0)) < 0) {
dprintk("lockd: rpc_call returned error %d\n", -status);
switch (status) {
case -EPROTONOSUPPORT:
status = -EINVAL;
break;
case -ECONNREFUSED:
case -ETIMEDOUT:
case -ENOTCONN:
nlm_rebind_host(host);
status = -EAGAIN;
break;
case -ERESTARTSYS:
return signalled () ? -EINTR : status;
default:
break;
}
break;
} else
if (resp->status == NLM_LCK_DENIED_GRACE_PERIOD) {
dprintk("lockd: server in grace period\n");
if (argp->reclaim) {
printk(KERN_WARNING
"lockd: spurious grace period reject?!\n");
return -ENOLCK;
}
} else {
if (!argp->reclaim) {
/* We appear to be out of the grace period */
wake_up_all(&host->h_gracewait);
}
dprintk("lockd: server returns status %d\n", resp->status);
return 0; /* Okay, call complete */
}
in_grace_period:
/*
* The server has rebooted and appears to be in the grace
* period during which locks are only allowed to be
* reclaimed.
* We can only back off and try again later.
*/
status = nlm_wait_on_grace(&host->h_gracewait);
} while (status == 0);
return status;
}
static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs3_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct nfs3_linkres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
dprintk("NFS call link %s\n", name->name);
res.fattr = nfs_alloc_fattr();
res.dir_attr = nfs_alloc_fattr();
if (res.fattr == NULL || res.dir_attr == NULL)
goto out;
zql_control_test(NFS_SERVER(inode));
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_post_op_update_inode(dir, res.dir_attr);
nfs_post_op_update_inode(inode, res.fattr);
out:
nfs_free_fattr(res.dir_attr);
nfs_free_fattr(res.fattr);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs3_createdata *data;
int status = -ENOMEM;
if (len > NFS3_MAXPATHLEN)
return -ENAMETOOLONG;
dprintk("NFS call symlink %pd\n", dentry);
data = nfs3_alloc_createdata();
if (data == NULL)
goto out;
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
data->arg.symlink.fromfh = NFS_FH(dir);
data->arg.symlink.fromname = dentry->d_name.name;
data->arg.symlink.fromlen = dentry->d_name.len;
data->arg.symlink.pages = &page;
data->arg.symlink.pathlen = len;
data->arg.symlink.sattr = sattr;
zql_control_test(NFS_SERVER(dir));
status = nfs3_do_create(dir, dentry, data);
nfs3_free_createdata(data);
out:
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct posix_acl *default_acl, *acl;
struct nfs3_createdata *data;
int status = -ENOMEM;
dprintk("NFS call mkdir %pd\n", dentry);
data = nfs3_alloc_createdata();
if (data == NULL)
goto out;
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
if (status)
goto out;
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
data->arg.mkdir.fh = NFS_FH(dir);
data->arg.mkdir.name = dentry->d_name.name;
data->arg.mkdir.len = dentry->d_name.len;
data->arg.mkdir.sattr = sattr;
zql_control_test(NFS_SERVER(dir));
status = nfs3_do_create(dir, dentry, data);
if (status != 0)
goto out_release_acls;
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
out_release_acls:
posix_acl_release(acl);
posix_acl_release(default_acl);
out:
nfs3_free_createdata(data);
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_fattr *dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
.rpc_argp = &arg,
};
int status = -ENOMEM;
dprintk("NFS call rmdir %s\n", name->name);
dir_attr = nfs_alloc_fattr();
if (dir_attr == NULL)
goto out;
msg.rpc_resp = dir_attr;
zql_control_test(NFS_SERVER(dir));
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_post_op_update_inode(dir, dir_attr);
nfs_free_fattr(dir_attr);
out:
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass the user buffer
* to the encode function, which installs it in the receive iovec.
* The decode function itself doesn't perform any decoding, it just makes
* sure the reply is syntactically correct.
*
* Also note that this implementation handles both plain readdir and
* readdirplus.
*/
static int
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
__be32 *verf = NFS_I(dir)->cookieverf;
struct nfs3_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.verf = {verf[0], verf[1]},
.plus = plus,
.count = count,
.pages = pages
};
struct nfs3_readdirres res = {
.verf = verf,
.plus = plus
};
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = cred
};
int status = -ENOMEM;
if (plus)
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
dprintk("NFS call readdir%s %d\n",
plus? "plus" : "", (unsigned int) cookie);
res.dir_attr = nfs_alloc_fattr();
if (res.dir_attr == NULL)
goto out;
zql_control_test(NFS_SERVER(dir));
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
nfs_refresh_inode(dir, res.dir_attr);
nfs_free_fattr(res.dir_attr);
out:
dprintk("NFS reply readdir%s: %d\n",
plus? "plus" : "", status);
return status;
}
static int
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
dev_t rdev)
{
struct posix_acl *default_acl, *acl;
struct nfs3_createdata *data;
int status = -ENOMEM;
dprintk("NFS call mknod %pd %u:%u\n", dentry,
MAJOR(rdev), MINOR(rdev));
data = nfs3_alloc_createdata();
if (data == NULL)
goto out;
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
if (status)
goto out;
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
data->arg.mknod.fh = NFS_FH(dir);
data->arg.mknod.name = dentry->d_name.name;
data->arg.mknod.len = dentry->d_name.len;
data->arg.mknod.sattr = sattr;
data->arg.mknod.rdev = rdev;
switch (sattr->ia_mode & S_IFMT) {
case S_IFBLK:
data->arg.mknod.type = NF3BLK;
break;
case S_IFCHR:
data->arg.mknod.type = NF3CHR;
break;
case S_IFIFO:
data->arg.mknod.type = NF3FIFO;
break;
case S_IFSOCK:
data->arg.mknod.type = NF3SOCK;
break;
default:
status = -EINVAL;
goto out;
}
zql_control_test(NFS_SERVER(dir));
status = nfs3_do_create(dir, dentry, data);
if (status != 0)
goto out_release_acls;
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
out_release_acls:
posix_acl_release(acl);
posix_acl_release(default_acl);
out:
nfs3_free_createdata(data);
dprintk("NFS reply mknod: %d\n", status);
return status;
}
static int
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
.rpc_argp = fhandle,
.rpc_resp = stat,
};
int status;
dprintk("NFS call fsstat\n");
nfs_fattr_init(stat->fattr);
zql_control_test(server);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply fsstat: %d\n", status);
return status;
}
static int
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
.rpc_argp = fhandle,
.rpc_resp = info,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(client, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
return status;
}
/*
* Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
* nfs_create_server
*/
static int
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
int status;
zql_control_test(server);
status = do_proc_fsinfo(server->client, fhandle, info);
if (status && server->nfs_client->cl_rpcclient != server->client)
status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
return status;
}
static int
nfs_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct nfs_diropok res = {
.fh = fhandle,
.fattr = fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LOOKUP],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call lookup %s\n", name->name);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
static int nfs_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs_readlinkargs args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READLINK],
.rpc_argp = &args,
};
int status;
dprintk("NFS call readlink\n");
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
dprintk("NFS reply readlink: %d\n", status);
return status;
}
static int nfs_proc_read(struct nfs_read_data *rdata)
{
int flags = rdata->flags;
struct inode * inode = rdata->inode;
struct nfs_fattr * fattr = rdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READ],
.rpc_argp = &rdata->args,
.rpc_resp = &rdata->res,
.rpc_cred = rdata->cred,
};
int status;
dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
(long long) rdata->args.offset);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
nfs_invalidate_atime(inode);
if (status >= 0) {
nfs_refresh_inode(inode, fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
if (rdata->args.offset + rdata->args.count >= fattr->size)
rdata->res.eof = 1;
}
dprintk("NFS reply read: %d\n", status);
return status;
}
static int nfs_proc_write(struct nfs_write_data *wdata)
{
int flags = wdata->flags;
struct inode * inode = wdata->inode;
struct nfs_fattr * fattr = wdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_WRITE],
.rpc_argp = &wdata->args,
.rpc_resp = &wdata->res,
.rpc_cred = wdata->cred,
};
int status;
dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
(long long) wdata->args.offset);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
if (status >= 0) {
nfs_post_op_update_inode_force_wcc(inode, fattr);
wdata->res.count = wdata->args.count;
wdata->verf.committed = NFS_FILE_SYNC;
}
dprintk("NFS reply write: %d\n", status);
return status < 0? status : wdata->res.count;
}
static int
nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
int flags, struct nameidata *nd)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr;
struct nfs_createargs arg = {
.fh = NFS_FH(dir),
.name = dentry->d_name.name,
.len = dentry->d_name.len,
.sattr = sattr
};
struct nfs_diropok res = {
.fh = &fhandle,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_CREATE],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
nfs_fattr_init(&fattr);
dprintk("NFS call create %s\n", dentry->d_name.name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
status = nfs_instantiate(dentry, &fhandle, &fattr);
dprintk("NFS reply create: %d\n", status);
return status;
}
/*
* In NFSv2, mknod is grafted onto the create call.
*/
static int
nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
dev_t rdev)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr;
struct nfs_createargs arg = {
.fh = NFS_FH(dir),
.name = dentry->d_name.name,
.len = dentry->d_name.len,
.sattr = sattr
};
struct nfs_diropok res = {
.fh = &fhandle,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_CREATE],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status, mode;
dprintk("NFS call mknod %s\n", dentry->d_name.name);
mode = sattr->ia_mode;
if (S_ISFIFO(mode)) {
sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR;
sattr->ia_valid &= ~ATTR_SIZE;
} else if (S_ISCHR(mode) || S_ISBLK(mode)) {
sattr->ia_valid |= ATTR_SIZE;
sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
}
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == -EINVAL && S_ISFIFO(mode)) {
sattr->ia_mode = mode;
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
}
if (status == 0)
status = nfs_instantiate(dentry, &fhandle, &fattr);
dprintk("NFS reply mknod: %d\n", status);
return status;
}
static int
nfs_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_removeargs arg = {
.fh = NFS_FH(dir),
.name.len = name->len,
.name.name = name->name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_REMOVE],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call remove %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply remove: %d\n", status);
return status;
}
static void
nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
}
static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir)
{
nfs_mark_for_revalidate(dir);
return 1;
}
static void
nfs_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME];
}
static int
nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
struct inode *new_dir)
{
nfs_mark_for_revalidate(old_dir);
nfs_mark_for_revalidate(new_dir);
return 1;
}
static int
nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.old_name = old_name,
.new_dir = NFS_FH(new_dir),
.new_name = new_name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RENAME],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_mark_for_revalidate(old_dir);
nfs_mark_for_revalidate(new_dir);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LINK],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call link %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_mark_for_revalidate(inode);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr;
struct nfs_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = dentry->d_name.name,
.fromlen = dentry->d_name.len,
.pages = &page,
.pathlen = len,
.sattr = sattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_SYMLINK],
.rpc_argp = &arg,
};
int status;
if (len > NFS2_MAXPATHLEN)
return -ENAMETOOLONG;
dprintk("NFS call symlink %s\n", dentry->d_name.name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
/*
* V2 SYMLINK requests don't return any attributes. Setting the
* filehandle size to zero indicates to nfs_instantiate that it
* should fill in the data with a LOOKUP call on the wire.
*/
if (status == 0) {
nfs_fattr_init(&fattr);
fhandle.size = 0;
status = nfs_instantiate(dentry, &fhandle, &fattr);
}
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr;
struct nfs_createargs arg = {
.fh = NFS_FH(dir),
.name = dentry->d_name.name,
.len = dentry->d_name.len,
.sattr = sattr
};
struct nfs_diropok res = {
.fh = &fhandle,
.fattr = &fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_MKDIR],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
status = nfs_instantiate(dentry, &fhandle, &fattr);
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RMDIR],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rmdir %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass a temporary
* buffer to the encode function, which installs it in the receive
* the receive iovec. The decode function just parses the reply to make
* sure it is syntactically correct; the entries itself are decoded
* from nfs_readdir by calling the decode_entry function directly.
*/
static int
nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page *page, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.count = count,
.pages = &page,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READDIR],
.rpc_argp = &arg,
.rpc_cred = cred,
};
int status;
lock_kernel();
dprintk("NFS call readdir %d\n", (unsigned int)cookie);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
dprintk("NFS reply readdir: %d\n", status);
unlock_kernel();
return status;
}
static int
nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call statfs\n");
nfs_fattr_init(stat->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply statfs: %d\n", status);
if (status)
goto out;
stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize;
stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
stat->tfiles = 0;
stat->ffiles = 0;
stat->afiles = 0;
out:
return status;
}
static int
nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
if (status)
goto out;
info->rtmax = NFS_MAXDATA;
info->rtpref = fsinfo.tsize;
info->rtmult = fsinfo.bsize;
info->wtmax = NFS_MAXDATA;
info->wtpref = fsinfo.tsize;
info->wtmult = fsinfo.bsize;
info->dtpref = fsinfo.tsize;
info->maxfilesize = 0x7FFFFFFF;
info->lease_time = 0;
out:
return status;
}
static int
nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
info->max_link = 0;
info->max_namelen = NFS2_MAXNAMLEN;
return 0;
}
static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
nfs_invalidate_atime(data->inode);
if (task->tk_status >= 0) {
nfs_refresh_inode(data->inode, data->res.fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
if (data->args.offset + data->args.count >= data->res.fattr->size)
data->res.eof = 1;
}
return 0;
}
static void nfs_proc_read_setup(struct nfs_read_data *data)
{
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
}
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (task->tk_status >= 0)
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
return 0;
}
static void nfs_proc_write_setup(struct nfs_write_data *data, int how)
{
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
data->args.stable = NFS_FILE_SYNC;
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
}
static void
nfs_proc_commit_setup(struct nfs_write_data *data, int how)
{
BUG();
}
static int
nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
}
const struct nfs_rpc_ops nfs_v2_clientops = {
.version = 2, /* protocol version */
.dentry_ops = &nfs_dentry_operations,
.dir_inode_ops = &nfs_dir_inode_operations,
.file_inode_ops = &nfs_file_inode_operations,
.getroot = nfs_proc_get_root,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
.access = NULL, /* access */
.readlink = nfs_proc_readlink,
.read = nfs_proc_read,
.write = nfs_proc_write,
.commit = NULL, /* commit */
.create = nfs_proc_create,
.remove = nfs_proc_remove,
.unlink_setup = nfs_proc_unlink_setup,
.unlink_done = nfs_proc_unlink_done,
.rename = nfs_proc_rename,
.rename_setup = nfs_proc_rename_setup,
.rename_done = nfs_proc_rename_done,
.link = nfs_proc_link,
.symlink = nfs_proc_symlink,
.mkdir = nfs_proc_mkdir,
.rmdir = nfs_proc_rmdir,
.readdir = nfs_proc_readdir,
.mknod = nfs_proc_mknod,
.statfs = nfs_proc_statfs,
.fsinfo = nfs_proc_fsinfo,
.pathconf = nfs_proc_pathconf,
.decode_dirent = nfs_decode_dirent,
.read_setup = nfs_proc_read_setup,
.read_done = nfs_read_done,
.write_setup = nfs_proc_write_setup,
.write_done = nfs_write_done,
.commit_setup = nfs_proc_commit_setup,
.file_open = nfs_open,
.file_release = nfs_release,
.lock = nfs_proc_lock,
.close_context = nfs_close_context,
};
static int
nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LINK],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call link %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_mark_for_revalidate(inode);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs_fh *fh;
struct nfs_fattr *fattr;
struct nfs_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = dentry->d_name.name,
.fromlen = dentry->d_name.len,
.pages = &page,
.pathlen = len,
.sattr = sattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_SYMLINK],
.rpc_argp = &arg,
};
int status = -ENAMETOOLONG;
dprintk("NFS call symlink %s\n", dentry->d_name.name);
if (len > NFS2_MAXPATHLEN)
goto out;
fh = nfs_alloc_fhandle();
fattr = nfs_alloc_fattr();
status = -ENOMEM;
if (fh == NULL || fattr == NULL)
goto out_free;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
/*
*/
if (status == 0)
status = nfs_instantiate(dentry, fh, fattr);
out_free:
nfs_free_fattr(fattr);
nfs_free_fhandle(fh);
out:
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_MKDIR],
};
int status = -ENOMEM;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
data = nfs_alloc_createdata(dir, dentry, sattr);
if (data == NULL)
goto out;
msg.rpc_argp = &data->arg;
msg.rpc_resp = &data->res;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
nfs_free_createdata(data);
out:
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RMDIR],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rmdir %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
*/
static int
nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.count = count,
.pages = pages,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READDIR],
.rpc_argp = &arg,
.rpc_cred = cred,
};
int status;
dprintk("NFS call readdir %d\n", (unsigned int)cookie);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
dprintk("NFS reply readdir: %d\n", status);
return status;
}
static int
nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call statfs\n");
nfs_fattr_init(stat->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply statfs: %d\n", status);
if (status)
goto out;
stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize;
stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
stat->tfiles = 0;
stat->ffiles = 0;
stat->afiles = 0;
out:
return status;
}
static int
nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
if (status)
goto out;
info->rtmax = NFS_MAXDATA;
info->rtpref = fsinfo.tsize;
info->rtmult = fsinfo.bsize;
info->wtmax = NFS_MAXDATA;
info->wtpref = fsinfo.tsize;
info->wtmult = fsinfo.bsize;
info->dtpref = fsinfo.tsize;
info->maxfilesize = 0x7FFFFFFF;
info->lease_time = 0;
out:
return status;
}
static int
nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
info->max_link = 0;
info->max_namelen = NFS2_MAXNAMLEN;
return 0;
}
static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
if (nfs_async_handle_expired_key(task))
return -EAGAIN;
nfs_invalidate_atime(data->inode);
if (task->tk_status >= 0) {
nfs_refresh_inode(data->inode, data->res.fattr);
/*
*/
if (data->args.offset + data->args.count >= data->res.fattr->size)
data->res.eof = 1;
}
return 0;
}
static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_READ];
}
static void nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
{
rpc_call_start(task);
}
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs_async_handle_expired_key(task))
return -EAGAIN;
if (task->tk_status >= 0)
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
return 0;
}
static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
/* */
data->args.stable = NFS_FILE_SYNC;
msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE];
}
.len = name->len
};
struct nfs_diropok res = {
.fh = fhandle,
.fattr = fattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LOOKUP],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
dprintk("NFS call lookup %s\n", name->name);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
static int nfs_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs_readlinkargs args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READLINK],
static int
nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_LINK],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call link %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_mark_for_revalidate(inode);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs_fh *fh;
struct nfs_fattr *fattr;
struct nfs_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = dentry->d_name.name,
.fromlen = dentry->d_name.len,
.pages = &page,
.pathlen = len,
.sattr = sattr
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_SYMLINK],
.rpc_argp = &arg,
};
int status = -ENAMETOOLONG;
dprintk("NFS call symlink %s\n", dentry->d_name.name);
if (len > NFS2_MAXPATHLEN)
goto out;
fh = nfs_alloc_fhandle();
fattr = nfs_alloc_fattr();
status = -ENOMEM;
if (fh == NULL || fattr == NULL)
goto out_free;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
/*
* V2 SYMLINK requests don't return any attributes. Setting the
* filehandle size to zero indicates to nfs_instantiate that it
* should fill in the data with a LOOKUP call on the wire.
*/
if (status == 0)
status = nfs_instantiate(dentry, fh, fattr, NULL);
out_free:
nfs_free_fattr(fattr);
nfs_free_fhandle(fh);
out:
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_MKDIR],
};
int status = -ENOMEM;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
data = nfs_alloc_createdata(dir, dentry, sattr);
if (data == NULL)
goto out;
msg.rpc_argp = &data->arg;
msg.rpc_resp = &data->res;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
nfs_free_createdata(data);
out:
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RMDIR],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rmdir %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass a temporary
* buffer to the encode function, which installs it in the receive
* the receive iovec. The decode function just parses the reply to make
* sure it is syntactically correct; the entries itself are decoded
* from nfs_readdir by calling the decode_entry function directly.
*/
static int
nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page **pages, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.count = count,
.pages = pages,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READDIR],
.rpc_argp = &arg,
.rpc_cred = cred,
};
int status;
dprintk("NFS call readdir %d\n", (unsigned int)cookie);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
dprintk("NFS reply readdir: %d\n", status);
return status;
}
static int
nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call statfs\n");
nfs_fattr_init(stat->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply statfs: %d\n", status);
if (status)
goto out;
stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize;
stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
stat->tfiles = 0;
stat->ffiles = 0;
stat->afiles = 0;
out:
return status;
}
static int
nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs2_fsstat fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_STATFS],
.rpc_argp = fhandle,
.rpc_resp = &fsinfo,
};
int status;
dprintk("NFS call fsinfo\n");
nfs_fattr_init(info->fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply fsinfo: %d\n", status);
if (status)
goto out;
info->rtmax = NFS_MAXDATA;
info->rtpref = fsinfo.tsize;
info->rtmult = fsinfo.bsize;
info->wtmax = NFS_MAXDATA;
info->wtpref = fsinfo.tsize;
info->wtmult = fsinfo.bsize;
info->dtpref = fsinfo.tsize;
info->maxfilesize = 0x7FFFFFFF;
info->lease_time = 0;
out:
return status;
}
static int
nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
info->max_link = 0;
info->max_namelen = NFS2_MAXNAMLEN;
return 0;
}
static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
struct inode *inode = data->header->inode;
nfs_invalidate_atime(inode);
if (task->tk_status >= 0) {
nfs_refresh_inode(inode, data->res.fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
if (data->args.offset + data->res.count >= data->res.fattr->size)
data->res.eof = 1;
}
return 0;
}
static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_READ];
}
static void nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
{
rpc_call_start(task);
}
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
struct inode *inode = data->header->inode;
if (task->tk_status >= 0)
nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
return 0;
}
static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
data->args.stable = NFS_FILE_SYNC;
msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE];
}
/**
* rpcb_register - set or unset a port registration with the local rpcbind svc
* @prog: RPC program number to bind
* @vers: RPC version number to bind
* @prot: transport protocol to use to make this request
* @port: port value to register
* @okay: result code
*
* port == 0 means unregister, port != 0 means register.
*
* This routine supports only rpcbind version 2.
*/
int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
{
struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(INADDR_LOOPBACK),
};
struct rpcbind_args map = {
.r_prog = prog,
.r_vers = vers,
.r_prot = prot,
.r_port = port,
};
struct rpc_message msg = {
.rpc_proc = &rpcb_procedures2[port ?
RPCBPROC_SET : RPCBPROC_UNSET],
.rpc_argp = &map,
.rpc_resp = okay,
};
struct rpc_clnt *rpcb_clnt;
int error = 0;
dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
"rpcbind\n", (port ? "" : "un"),
prog, vers, prot, port);
rpcb_clnt = rpcb_create("localhost", (struct sockaddr *) &sin,
sizeof(sin), XPRT_TRANSPORT_UDP, 2, 1);
if (IS_ERR(rpcb_clnt))
return PTR_ERR(rpcb_clnt);
error = rpc_call_sync(rpcb_clnt, &msg, 0);
rpc_shutdown_client(rpcb_clnt);
if (error < 0)
printk(KERN_WARNING "RPC: failed to contact local rpcbind "
"server (errno %d).\n", -error);
dprintk("RPC: registration status %d/%d\n", error, *okay);
return error;
}
/**
* rpcb_getport_sync - obtain the port for an RPC service on a given host
* @sin: address of remote peer
* @prog: RPC program number to bind
* @vers: RPC version number to bind
* @prot: transport protocol to use to make this request
*
* Return value is the requested advertised port number,
* or a negative errno value.
*
* Called from outside the RPC client in a synchronous task context.
* Uses default timeout parameters specified by underlying transport.
*
* XXX: Needs to support IPv6
*/
int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
{
struct rpcbind_args map = {
.r_prog = prog,
.r_vers = vers,
.r_prot = prot,
.r_port = 0,
};
struct rpc_message msg = {
.rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT],
.rpc_argp = &map,
.rpc_resp = &map.r_port,
};
struct rpc_clnt *rpcb_clnt;
int status;
dprintk("RPC: %s(" NIPQUAD_FMT ", %u, %u, %d)\n",
__FUNCTION__, NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
sizeof(*sin), prot, 2, 0);
if (IS_ERR(rpcb_clnt))
return PTR_ERR(rpcb_clnt);
status = rpc_call_sync(rpcb_clnt, &msg, 0);
rpc_shutdown_client(rpcb_clnt);
if (status >= 0) {
if (map.r_port != 0)
return map.r_port;
status = -EACCES;
}
return status;
}
EXPORT_SYMBOL_GPL(rpcb_getport_sync);
static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, int version)
{
struct rpc_message msg = {
.rpc_proc = rpcb_next_version[version].rpc_proc,
.rpc_argp = map,
.rpc_resp = &map->r_port,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = rpcb_clnt,
.rpc_message = &msg,
.callback_ops = &rpcb_getport_ops,
.callback_data = map,
.flags = RPC_TASK_ASYNC,
};
return rpc_run_task(&task_setup_data);
}
/**
* rpcb_getport_async - obtain the port for a given RPC service on a given host
* @task: task that is waiting for portmapper request
*
* This one can be called for an ongoing RPC request, and can be used in
* an async (rpciod) context.
*/
void rpcb_getport_async(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
u32 bind_version;
struct rpc_xprt *xprt = task->tk_xprt;
struct rpc_clnt *rpcb_clnt;
static struct rpcbind_args *map;
struct rpc_task *child;
struct sockaddr_storage addr;
struct sockaddr *sap = (struct sockaddr *)&addr;
size_t salen;
int status;
struct rpcb_info *info;
dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
task->tk_pid, __FUNCTION__,
clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
/* Autobind on cloned rpc clients is discouraged */
BUG_ON(clnt->cl_parent != clnt);
if (xprt_test_and_set_binding(xprt)) {
status = -EAGAIN; /* tell caller to check again */
dprintk("RPC: %5u %s: waiting for another binder\n",
task->tk_pid, __FUNCTION__);
goto bailout_nowake;
}
/* Put self on queue before sending rpcbind request, in case
* rpcb_getport_done completes before we return from rpc_run_task */
rpc_sleep_on(&xprt->binding, task, NULL, NULL);
/* Someone else may have bound if we slept */
if (xprt_bound(xprt)) {
status = 0;
dprintk("RPC: %5u %s: already bound\n",
task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
salen = rpc_peeraddr(clnt, sap, sizeof(addr));
/* Don't ever use rpcbind v2 for AF_INET6 requests */
switch (sap->sa_family) {
case AF_INET:
info = rpcb_next_version;
break;
case AF_INET6:
info = rpcb_next_version6;
break;
default:
status = -EAFNOSUPPORT;
dprintk("RPC: %5u %s: bad address family\n",
task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
if (info[xprt->bind_index].rpc_proc == NULL) {
xprt->bind_index = 0;
status = -EPFNOSUPPORT;
dprintk("RPC: %5u %s: no more getport versions available\n",
task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
bind_version = info[xprt->bind_index].rpc_vers;
dprintk("RPC: %5u %s: trying rpcbind version %u\n",
task->tk_pid, __FUNCTION__, bind_version);
rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
bind_version, 0);
if (IS_ERR(rpcb_clnt)) {
status = PTR_ERR(rpcb_clnt);
dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
task->tk_pid, __FUNCTION__, PTR_ERR(rpcb_clnt));
goto bailout_nofree;
}
map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC);
if (!map) {
status = -ENOMEM;
dprintk("RPC: %5u %s: no memory available\n",
task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
map->r_prog = clnt->cl_prog;
map->r_vers = clnt->cl_vers;
map->r_prot = xprt->prot;
map->r_port = 0;
map->r_xprt = xprt_get(xprt);
map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
map->r_addr = rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR);
map->r_owner = RPCB_OWNER_STRING; /* ignored for GETADDR */
child = rpcb_call_async(rpcb_clnt, map, xprt->bind_index);
rpc_release_client(rpcb_clnt);
if (IS_ERR(child)) {
status = -EIO;
dprintk("RPC: %5u %s: rpc_run_task failed\n",
task->tk_pid, __FUNCTION__);
goto bailout;
}
rpc_put_task(child);
task->tk_xprt->stat.bind_count++;
return;
bailout:
kfree(map);
xprt_put(xprt);
bailout_nofree:
rpcb_wake_rpcbind_waiters(xprt, status);
bailout_nowake:
task->tk_status = status;
}
EXPORT_SYMBOL_GPL(rpcb_getport_async);
/*
* Rpcbind child task calls this callback via tk_exit.
*/
static void rpcb_getport_done(struct rpc_task *child, void *data)
{
struct rpcbind_args *map = data;
struct rpc_xprt *xprt = map->r_xprt;
int status = child->tk_status;
/* Garbage reply: retry with a lesser rpcbind version */
if (status == -EIO)
status = -EPROTONOSUPPORT;
/* rpcbind server doesn't support this rpcbind protocol version */
if (status == -EPROTONOSUPPORT)
xprt->bind_index++;
if (status < 0) {
/* rpcbind server not available on remote host? */
xprt->ops->set_port(xprt, 0);
} else if (map->r_port == 0) {
/* Requested RPC service wasn't registered on remote host */
xprt->ops->set_port(xprt, 0);
status = -EACCES;
} else {
/* Succeeded */
xprt->ops->set_port(xprt, map->r_port);
xprt_set_bound(xprt);
status = 0;
}
dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n",
child->tk_pid, status, map->r_port);
rpcb_wake_rpcbind_waiters(xprt, status);
}
static int rpcb_encode_mapping(struct rpc_rqst *req, __be32 *p,
struct rpcbind_args *rpcb)
{
dprintk("RPC: rpcb_encode_mapping(%u, %u, %d, %u)\n",
rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
*p++ = htonl(rpcb->r_prog);
*p++ = htonl(rpcb->r_vers);
*p++ = htonl(rpcb->r_prot);
*p++ = htonl(rpcb->r_port);
req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
return 0;
}
static int rpcb_decode_getport(struct rpc_rqst *req, __be32 *p,
unsigned short *portp)
{
*portp = (unsigned short) ntohl(*p++);
dprintk("RPC: rpcb_decode_getport result %u\n",
*portp);
return 0;
}
static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
unsigned int *boolp)
{
*boolp = (unsigned int) ntohl(*p++);
dprintk("RPC: rpcb_decode_set result %u\n",
*boolp);
return 0;
}
static int rpcb_encode_getaddr(struct rpc_rqst *req, __be32 *p,
struct rpcbind_args *rpcb)
{
dprintk("RPC: rpcb_encode_getaddr(%u, %u, %s)\n",
rpcb->r_prog, rpcb->r_vers, rpcb->r_addr);
*p++ = htonl(rpcb->r_prog);
*p++ = htonl(rpcb->r_vers);
p = xdr_encode_string(p, rpcb->r_netid);
p = xdr_encode_string(p, rpcb->r_addr);
p = xdr_encode_string(p, rpcb->r_owner);
req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
return 0;
}
struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_fattr fattr;
struct page *pages[NFSACL_MAXPAGES] = { };
struct nfs3_getaclargs args = {
.fh = NFS_FH(inode),
/* The xdr layer may allocate pages here. */
.pages = pages,
};
struct nfs3_getaclres res = {
.fattr = &fattr,
};
struct rpc_message msg = {
.rpc_argp = &args,
.rpc_resp = &res,
};
struct posix_acl *acl;
int status, count;
if (!nfs_server_capable(inode, NFS_CAP_ACLS))
return ERR_PTR(-EOPNOTSUPP);
status = nfs_revalidate_inode(server, inode);
if (status < 0)
return ERR_PTR(status);
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
nfs_zap_acl_cache(inode);
acl = nfs3_get_cached_acl(inode, type);
if (acl != ERR_PTR(-EAGAIN))
return acl;
acl = NULL;
/*
* Only get the access acl when explicitly requested: We don't
* need it for access decisions, and only some applications use
* it. Applications which request the access acl first are not
* penalized from this optimization.
*/
if (type == ACL_TYPE_ACCESS)
args.mask |= NFS_ACLCNT|NFS_ACL;
if (S_ISDIR(inode->i_mode))
args.mask |= NFS_DFACLCNT|NFS_DFACL;
if (args.mask == 0)
return NULL;
dprintk("NFS call getacl\n");
msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_GETACL];
nfs_fattr_init(&fattr);
status = rpc_call_sync(server->client_acl, &msg, 0);
dprintk("NFS reply getacl: %d\n", status);
/* pages may have been allocated at the xdr layer. */
for (count = 0; count < NFSACL_MAXPAGES && args.pages[count]; count++)
__free_page(args.pages[count]);
switch (status) {
case 0:
status = nfs_refresh_inode(inode, &fattr);
break;
case -EPFNOSUPPORT:
case -EPROTONOSUPPORT:
dprintk("NFS_V3_ACL extension not supported; disabling\n");
server->caps &= ~NFS_CAP_ACLS;
case -ENOTSUPP:
status = -EOPNOTSUPP;
default:
goto getout;
}
if ((args.mask & res.mask) != args.mask) {
status = -EIO;
goto getout;
}
if (res.acl_access != NULL) {
if (posix_acl_equiv_mode(res.acl_access, NULL) == 0) {
posix_acl_release(res.acl_access);
res.acl_access = NULL;
}
}
nfs3_cache_acls(inode,
(res.mask & NFS_ACL) ? res.acl_access : ERR_PTR(-EINVAL),
(res.mask & NFS_DFACL) ? res.acl_default : ERR_PTR(-EINVAL));
switch(type) {
case ACL_TYPE_ACCESS:
acl = res.acl_access;
res.acl_access = NULL;
break;
case ACL_TYPE_DEFAULT:
acl = res.acl_default;
res.acl_default = NULL;
}
getout:
posix_acl_release(res.acl_access);
posix_acl_release(res.acl_default);
if (status != 0) {
posix_acl_release(acl);
acl = ERR_PTR(status);
}
return acl;
}
static int
nfs_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct nfs_diropok res = {
.fh = fhandle,
.fattr = fattr
};
int status;
dprintk("NFS call lookup %s\n", name->name);
fattr->valid = 0;
status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
static int
nfs_proc_readlink(struct inode *inode, struct page *page)
{
struct nfs_readlinkargs args = {
.fh = NFS_FH(inode),
.count = PAGE_CACHE_SIZE,
.pages = &page
};
int status;
dprintk("NFS call readlink\n");
status = rpc_call(NFS_CLIENT(inode), NFSPROC_READLINK, &args, NULL, 0);
dprintk("NFS reply readlink: %d\n", status);
return status;
}
static int
nfs_proc_read(struct nfs_read_data *rdata, struct file *filp)
{
int flags = rdata->flags;
struct inode * inode = rdata->inode;
struct nfs_fattr * fattr = rdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READ],
.rpc_argp = &rdata->args,
.rpc_resp = &rdata->res,
};
int status;
dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
(long long) rdata->args.offset);
fattr->valid = 0;
msg.rpc_cred = nfs_cred(inode, filp);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
if (status >= 0) {
nfs_refresh_inode(inode, fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
if (rdata->args.offset + rdata->args.count >= fattr->size)
rdata->res.eof = 1;
}
dprintk("NFS reply read: %d\n", status);
return status;
}
static int
nfs_proc_write(struct nfs_write_data *wdata, struct file *filp)
{
int flags = wdata->flags;
struct inode * inode = wdata->inode;
struct nfs_fattr * fattr = wdata->res.fattr;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_WRITE],
.rpc_argp = &wdata->args,
.rpc_resp = &wdata->res,
};
int status;
dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
(long long) wdata->args.offset);
fattr->valid = 0;
msg.rpc_cred = nfs_cred(inode, filp);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
if (status >= 0) {
nfs_refresh_inode(inode, fattr);
wdata->res.count = wdata->args.count;
wdata->verf.committed = NFS_FILE_SYNC;
}
dprintk("NFS reply write: %d\n", status);
return status < 0? status : wdata->res.count;
}
static struct inode *
nfs_proc_create(struct inode *dir, struct qstr *name, struct iattr *sattr,
int flags)
{
struct nfs_fh fhandle;
struct nfs_fattr fattr;
struct nfs_createargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len,
.sattr = sattr
};
struct nfs_diropok res = {
.fh = &fhandle,
.fattr = &fattr
};
int status;
fattr.valid = 0;
dprintk("NFS call create %s\n", name->name);
status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
dprintk("NFS reply create: %d\n", status);
if (status == 0) {
struct inode *inode;
inode = nfs_fhget(dir->i_sb, &fhandle, &fattr);
if (inode)
return inode;
status = -ENOMEM;
}
return ERR_PTR(status);
}
/*
* In NFSv2, mknod is grafted onto the create call.
*/
static int
nfs_proc_mknod(struct inode *dir, struct qstr *name, struct iattr *sattr,
dev_t rdev, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs_createargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len,
.sattr = sattr
};
struct nfs_diropok res = {
.fh = fhandle,
.fattr = fattr
};
int status, mode;
dprintk("NFS call mknod %s\n", name->name);
mode = sattr->ia_mode;
if (S_ISFIFO(mode)) {
sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR;
sattr->ia_valid &= ~ATTR_SIZE;
} else if (S_ISCHR(mode) || S_ISBLK(mode)) {
sattr->ia_valid |= ATTR_SIZE;
sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
}
fattr->valid = 0;
status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
if (status == -EINVAL && S_ISFIFO(mode)) {
sattr->ia_mode = mode;
fattr->valid = 0;
status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
}
dprintk("NFS reply mknod: %d\n", status);
return status;
}
static int
nfs_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_REMOVE],
.rpc_argp = &arg,
.rpc_resp = NULL,
.rpc_cred = NULL
};
int status;
dprintk("NFS call remove %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
dprintk("NFS reply remove: %d\n", status);
return status;
}
static int
nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
{
struct nfs_diropargs *arg;
arg = (struct nfs_diropargs *)kmalloc(sizeof(*arg), GFP_KERNEL);
if (!arg)
return -ENOMEM;
arg->fh = NFS_FH(dir->d_inode);
arg->name = name->name;
arg->len = name->len;
msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
msg->rpc_argp = arg;
return 0;
}
static int
nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
{
struct rpc_message *msg = &task->tk_msg;
if (msg->rpc_argp)
kfree(msg->rpc_argp);
return 0;
}
static int
nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.fromfh = NFS_FH(old_dir),
.fromname = old_name->name,
.fromlen = old_name->len,
.tofh = NFS_FH(new_dir),
.toname = new_name->name,
.tolen = new_name->len
};
int status;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
status = rpc_call(NFS_CLIENT(old_dir), NFSPROC_RENAME, &arg, NULL, 0);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
int status;
dprintk("NFS call link %s\n", name->name);
status = rpc_call(NFS_CLIENT(inode), NFSPROC_LINK, &arg, NULL, 0);
dprintk("NFS reply link: %d\n", status);
return status;
}
static int
nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
struct iattr *sattr, struct nfs_fh *fhandle,
struct nfs_fattr *fattr)
{
struct nfs_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = name->name,
.fromlen = name->len,
.topath = path->name,
.tolen = path->len,
.sattr = sattr
};
int status;
dprintk("NFS call symlink %s -> %s\n", name->name, path->name);
fattr->valid = 0;
status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0);
dprintk("NFS reply symlink: %d\n", status);
return status;
}
static int
nfs_proc_mkdir(struct inode *dir, struct qstr *name, struct iattr *sattr,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs_createargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len,
.sattr = sattr
};
struct nfs_diropok res = {
.fh = fhandle,
.fattr = fattr
};
int status;
dprintk("NFS call mkdir %s\n", name->name);
fattr->valid = 0;
status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0);
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
static int
nfs_proc_rmdir(struct inode *dir, struct qstr *name)
{
struct nfs_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
int status;
dprintk("NFS call rmdir %s\n", name->name);
status = rpc_call(NFS_CLIENT(dir), NFSPROC_RMDIR, &arg, NULL, 0);
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
/*
* The READDIR implementation is somewhat hackish - we pass a temporary
* buffer to the encode function, which installs it in the receive
* the receive iovec. The decode function just parses the reply to make
* sure it is syntactically correct; the entries itself are decoded
* from nfs_readdir by calling the decode_entry function directly.
*/
static int
nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page *page, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs_readdirargs arg = {
.fh = NFS_FH(dir),
.cookie = cookie,
.count = count,
.pages = &page
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READDIR],
.rpc_argp = &arg,
.rpc_resp = NULL,
.rpc_cred = cred
};
int status;
lock_kernel();
dprintk("NFS call readdir %d\n", (unsigned int)cookie);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
dprintk("NFS reply readdir: %d\n", status);
unlock_kernel();
return status;
}
static int
nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *stat)
{
struct nfs2_fsstat fsinfo;
int status;
dprintk("NFS call statfs\n");
stat->fattr->valid = 0;
status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
dprintk("NFS reply statfs: %d\n", status);
if (status)
goto out;
stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize;
stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
stat->tfiles = 0;
stat->ffiles = 0;
stat->afiles = 0;
out:
return status;
}
static int
nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs2_fsstat fsinfo;
int status;
dprintk("NFS call fsinfo\n");
info->fattr->valid = 0;
status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
dprintk("NFS reply fsinfo: %d\n", status);
if (status)
goto out;
info->rtmax = NFS_MAXDATA;
info->rtpref = fsinfo.tsize;
info->rtmult = fsinfo.bsize;
info->wtmax = NFS_MAXDATA;
info->wtpref = fsinfo.tsize;
info->wtmult = fsinfo.bsize;
info->dtpref = fsinfo.tsize;
info->maxfilesize = 0x7FFFFFFF;
info->lease_time = 0;
out:
return status;
}
static int
nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *info)
{
info->max_link = 0;
info->max_namelen = NFS2_MAXNAMLEN;
return 0;
}
extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int);
static void
nfs_read_done(struct rpc_task *task)
{
struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata;
if (task->tk_status >= 0) {
nfs_refresh_inode(data->inode, data->res.fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
if (data->args.offset + data->args.count >= data->res.fattr->size)
data->res.eof = 1;
}
nfs_readpage_result(task);
}
static void
nfs_proc_read_setup(struct nfs_read_data *data)
{
struct rpc_task *task = &data->task;
struct inode *inode = data->inode;
int flags;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
/* N.B. Do we need to test? Never called for swapfile inode */
flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
/* Finalize the task. */
rpc_init_task(task, NFS_CLIENT(inode), nfs_read_done, flags);
rpc_call_setup(task, &msg, 0);
}
static void
nfs_write_done(struct rpc_task *task)
{
struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata;
if (task->tk_status >= 0)
nfs_refresh_inode(data->inode, data->res.fattr);
nfs_writeback_done(task);
}
static void
nfs_proc_write_setup(struct nfs_write_data *data, int how)
{
struct rpc_task *task = &data->task;
struct inode *inode = data->inode;
int flags;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
data->args.stable = NFS_FILE_SYNC;
/* Set the initial flags for the task. */
flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
/* Finalize the task. */
rpc_init_task(task, NFS_CLIENT(inode), nfs_write_done, flags);
rpc_call_setup(task, &msg, 0);
}
static void
nfs_proc_commit_setup(struct nfs_write_data *data, int how)
{
BUG();
}
/*
* Set up the nfspage struct with the right credentials
*/
static void
nfs_request_init(struct nfs_page *req, struct file *filp)
{
req->wb_cred = get_rpccred(nfs_cred(req->wb_inode, filp));
}
static int
nfs_request_compatible(struct nfs_page *req, struct file *filp, struct page *page)
{
if (req->wb_file != filp)
return 0;
if (req->wb_page != page)
return 0;
if (req->wb_cred != nfs_file_cred(filp))
return 0;
return 1;
}
static int
nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
}
struct nfs_rpc_ops nfs_v2_clientops = {
.version = 2, /* protocol version */
.dentry_ops = &nfs_dentry_operations,
.dir_inode_ops = &nfs_dir_inode_operations,
.getroot = nfs_proc_get_root,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
.access = NULL, /* access */
.readlink = nfs_proc_readlink,
.read = nfs_proc_read,
.write = nfs_proc_write,
.commit = NULL, /* commit */
.create = nfs_proc_create,
.remove = nfs_proc_remove,
.unlink_setup = nfs_proc_unlink_setup,
.unlink_done = nfs_proc_unlink_done,
.rename = nfs_proc_rename,
.link = nfs_proc_link,
.symlink = nfs_proc_symlink,
.mkdir = nfs_proc_mkdir,
.rmdir = nfs_proc_rmdir,
.readdir = nfs_proc_readdir,
.mknod = nfs_proc_mknod,
.statfs = nfs_proc_statfs,
.fsinfo = nfs_proc_fsinfo,
.pathconf = nfs_proc_pathconf,
.decode_dirent = nfs_decode_dirent,
.read_setup = nfs_proc_read_setup,
.write_setup = nfs_proc_write_setup,
.commit_setup = nfs_proc_commit_setup,
.file_open = nfs_open,
.file_release = nfs_release,
.request_init = nfs_request_init,
.request_compatible = nfs_request_compatible,
.lock = nfs_proc_lock,
};
