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, };