1 // SPDX-License-Identifier: GPL-2.0
35 	unsigned openflags = filp->f_flags;  in nfs4_file_open()
41 	 * opens in ->lookup() or ->create().  in nfs4_file_open()
45 	 * -EOPENSTALE.  The VFS will retry the lookup/create/open.  in nfs4_file_open()
70 		filemap_write_and_wait(inode->i_mapping);  in nfs4_file_open()
73 	inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr, NULL);  in nfs4_file_open()
79 		case -ENOENT:  in nfs4_file_open()
80 		case -ESTALE:  in nfs4_file_open()
81 		case -EISDIR:  in nfs4_file_open()
82 		case -ENOTDIR:  in nfs4_file_open()
83 		case -ELOOP:  in nfs4_file_open()
93 	filp->f_mode |= FMODE_CAN_ODIRECT;  in nfs4_file_open()
103 	err = -EOPENSTALE;  in nfs4_file_open()
108  * Flush all dirty pages, and check for write errors.
119 	if ((file->f_mode & FMODE_WRITE) == 0)  in nfs4_file_flush()
127 		return filemap_fdatawrite(file->f_mapping);  in nfs4_file_flush()
129 	/* Flush writes to the server and return any errors */  in nfs4_file_flush()
130 	since = filemap_sample_wb_err(file->f_mapping);  in nfs4_file_flush()
132 	return filemap_check_wb_err(file->f_mapping, since);  in nfs4_file_flush()
147 	if (file_in->f_op != &nfs4_file_operations)  in __nfs4_copy_file_range()
148 		return -EXDEV;  in __nfs4_copy_file_range()
151 		return -EOPNOTSUPP;  in __nfs4_copy_file_range()
153 		return -EOPNOTSUPP;  in __nfs4_copy_file_range()
157 	if (count <= 2 * NFS_SERVER(file_inode(file_in))->rsize)  in __nfs4_copy_file_range()
159 retry:  in __nfs4_copy_file_range()
166 			return -EOPNOTSUPP;  in __nfs4_copy_file_range()
170 			return -ENOMEM;  in __nfs4_copy_file_range()
174 			ret = -EOPNOTSUPP;  in __nfs4_copy_file_range()
177 		nss = &cn_resp->cnr_src;  in __nfs4_copy_file_range()
178 		cnrs = &cn_resp->cnr_stateid;  in __nfs4_copy_file_range()
185 	if (ret == -EAGAIN)  in __nfs4_copy_file_range()
186 		goto retry;  in __nfs4_copy_file_range()
198 	if (ret == -EOPNOTSUPP || ret == -EXDEV)  in nfs4_copy_file_range()
212 		if (ret != -EOPNOTSUPP)  in nfs4_file_llseek()
225 	if (!S_ISREG(inode->i_mode))  in nfs42_fallocate()
226 		return -EOPNOTSUPP;  in nfs42_fallocate()
234 		return -EOPNOTSUPP;  in nfs42_fallocate()
255 	unsigned int bs = server->clone_blksize;  in nfs42_remap_file_range()
260 		return -EOPNOTSUPP;  in nfs42_remap_file_range()
263 		return -EINVAL;  in nfs42_remap_file_range()
266 		return -ETXTBSY;  in nfs42_remap_file_range()
269 	ret = -EINVAL;  in nfs42_remap_file_range()
277 	/* XXX: do we lock at all? what if server needs CB_RECALL_LAYOUT? */  in nfs42_remap_file_range()
279 	/* flush all pending writes on both src and dst so that server  in nfs42_remap_file_range()
295 		truncate_inode_pages_range(&dst_inode->i_data, dst_off, dst_off + count - 1);  in nfs42_remap_file_range()
318 	server = NFS_SB(ss_mnt->mnt_sb);  in __nfs42_ssc_open()
321 		return ERR_PTR(-ENOMEM);  in __nfs42_ssc_open()
329 	if (!S_ISREG(fattr->mode)) {  in __nfs42_ssc_open()
330 		res = ERR_PTR(-EBADF);  in __nfs42_ssc_open()
334 	res = ERR_PTR(-ENOMEM);  in __nfs42_ssc_open()
341 	r_ino = nfs_fhget(ss_mnt->mnt_sb, src_fh, fattr);  in __nfs42_ssc_open()
348 				     r_ino->i_fop);  in __nfs42_ssc_open()
355 	ctx = alloc_nfs_open_context(filep->f_path.dentry,  in __nfs42_ssc_open()
356 				     flags_to_mode(filep->f_flags), filep);  in __nfs42_ssc_open()
362 	res = ERR_PTR(-EINVAL);  in __nfs42_ssc_open()
363 	sp = nfs4_get_state_owner(server, ctx->cred, GFP_KERNEL);  in __nfs42_ssc_open()
367 	ctx->state = nfs4_get_open_state(r_ino, sp);  in __nfs42_ssc_open()
368 	if (ctx->state == NULL)  in __nfs42_ssc_open()
371 	set_bit(NFS_SRV_SSC_COPY_STATE, &ctx->state->flags);  in __nfs42_ssc_open()
372 	memcpy(&ctx->state->open_stateid.other, &stateid->other,  in __nfs42_ssc_open()
374 	update_open_stateid(ctx->state, stateid, NULL, filep->f_mode);  in __nfs42_ssc_open()
375 	set_bit(NFS_OPEN_STATE, &ctx->state->flags);  in __nfs42_ssc_open()
380 	file_ra_state_init(&filep->f_ra, filep->f_mapping->host->i_mapping);  in __nfs42_ssc_open()
400 	ctx->state->flags = 0;  in __nfs42_ssc_close()
409  * nfs42_ssc_register_ops - Wrapper to register NFS_V4 ops in nfs_common
420  * nfs42_ssc_unregister_ops - wrapper to un-register NFS_V4 ops in nfs_common