4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * cl_object implementation for VVP layer.
34 * Author: Nikita Danilov <nikita.danilov@sun.com>
37 #define DEBUG_SUBSYSTEM S_LLITE
39 #include <linux/user_namespace.h>
40 #ifdef HAVE_UIDGID_HEADER
41 # include <linux/uidgid.h>
43 #include <libcfs/libcfs.h>
46 #include "llite_internal.h"
47 #include "vvp_internal.h"
49 /*****************************************************************************
55 int vvp_object_invariant(const struct cl_object *obj)
57 struct inode *inode = vvp_object_inode(obj);
58 struct ll_inode_info *lli = ll_i2info(inode);
60 return (S_ISREG(inode->i_mode) || inode->i_mode == 0) &&
64 static int vvp_object_print(const struct lu_env *env, void *cookie,
65 lu_printer_t p, const struct lu_object *o)
67 struct vvp_object *obj = lu2vvp(o);
68 struct inode *inode = obj->vob_inode;
69 struct ll_inode_info *lli;
71 (*p)(env, cookie, "(%d %d) inode: %p ",
72 atomic_read(&obj->vob_transient_pages),
73 atomic_read(&obj->vob_mmap_cnt),
76 lli = ll_i2info(inode);
77 (*p)(env, cookie, "%lu/%u %o %u %d %p "DFID,
78 inode->i_ino, inode->i_generation, inode->i_mode,
79 inode->i_nlink, atomic_read(&inode->i_count),
80 lli->lli_clob, PFID(&lli->lli_fid));
85 static int vvp_attr_get(const struct lu_env *env, struct cl_object *obj,
88 struct inode *inode = vvp_object_inode(obj);
91 * lov overwrites most of these fields in
92 * lov_attr_get()->...lov_merge_lvb_kms(), except when inode
93 * attributes are newer.
96 attr->cat_size = i_size_read(inode);
97 attr->cat_mtime = inode->i_mtime.tv_sec;
98 attr->cat_atime = inode->i_atime.tv_sec;
99 attr->cat_ctime = inode->i_ctime.tv_sec;
100 attr->cat_blocks = inode->i_blocks;
101 attr->cat_uid = from_kuid(&init_user_ns, inode->i_uid);
102 attr->cat_gid = from_kgid(&init_user_ns, inode->i_gid);
103 attr->cat_projid = ll_i2info(inode)->lli_projid;
104 /* KMS is not known by this layer */
105 return 0; /* layers below have to fill in the rest */
108 static int vvp_attr_update(const struct lu_env *env, struct cl_object *obj,
109 const struct cl_attr *attr, unsigned valid)
111 struct inode *inode = vvp_object_inode(obj);
114 inode->i_uid = make_kuid(&init_user_ns, attr->cat_uid);
116 inode->i_gid = make_kgid(&init_user_ns, attr->cat_gid);
117 if (valid & CAT_ATIME)
118 inode->i_atime.tv_sec = attr->cat_atime;
119 if (valid & CAT_MTIME)
120 inode->i_mtime.tv_sec = attr->cat_mtime;
121 if (valid & CAT_CTIME)
122 inode->i_ctime.tv_sec = attr->cat_ctime;
123 if (0 && valid & CAT_SIZE)
124 i_size_write(inode, attr->cat_size);
125 if (valid & CAT_PROJID)
126 ll_i2info(inode)->lli_projid = attr->cat_projid;
127 /* not currently necessary */
128 if (0 && valid & (CAT_UID|CAT_GID|CAT_SIZE|CAT_PROJID))
129 mark_inode_dirty(inode);
133 static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj,
134 const struct cl_object_conf *conf)
136 struct ll_inode_info *lli = ll_i2info(conf->coc_inode);
138 if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
139 CDEBUG(D_VFSTRACE, DFID ": losing layout lock\n",
140 PFID(&lli->lli_fid));
142 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
144 /* Clean up page mmap for this inode.
145 * The reason for us to do this is that if the page has
146 * already been installed into memory space, the process
147 * can access it without interacting with lustre, so this
148 * page may be stale due to layout change, and the process
149 * will never be notified.
150 * This operation is expensive but mmap processes have to pay
151 * a price themselves. */
152 unmap_mapping_range(conf->coc_inode->i_mapping,
153 0, OBD_OBJECT_EOF, 0);
158 static int vvp_prune(const struct lu_env *env, struct cl_object *obj)
160 struct inode *inode = vvp_object_inode(obj);
164 rc = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
166 CDEBUG(D_VFSTRACE, DFID ": writeback failed: %d\n",
167 PFID(lu_object_fid(&obj->co_lu)), rc);
171 truncate_inode_pages(inode->i_mapping, 0);
175 static int vvp_object_glimpse(const struct lu_env *env,
176 const struct cl_object *obj, struct ost_lvb *lvb)
178 struct inode *inode = vvp_object_inode(obj);
181 lvb->lvb_mtime = LTIME_S(inode->i_mtime);
182 lvb->lvb_atime = LTIME_S(inode->i_atime);
183 lvb->lvb_ctime = LTIME_S(inode->i_ctime);
186 * LU-417: Add dirty pages block count lest i_blocks reports 0, some
187 * "cp" or "tar" on remote node may think it's a completely sparse file
190 if (lvb->lvb_size > 0 && lvb->lvb_blocks == 0)
191 lvb->lvb_blocks = dirty_cnt(inode);
196 static void vvp_req_attr_set(const struct lu_env *env, struct cl_object *obj,
197 struct cl_req_attr *attr)
201 u64 valid_flags = OBD_MD_FLTYPE;
204 inode = vvp_object_inode(obj);
206 if (attr->cra_type == CRT_WRITE) {
207 valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME |
208 OBD_MD_FLUID | OBD_MD_FLGID;
209 obdo_set_o_projid(oa, ll_i2info(inode)->lli_projid);
211 obdo_from_inode(oa, inode, valid_flags & attr->cra_flags);
212 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
213 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_INVALID_PFID))
215 memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid, LUSTRE_JOBID_SIZE);
218 static const struct cl_object_operations vvp_ops = {
219 .coo_page_init = vvp_page_init,
220 .coo_lock_init = vvp_lock_init,
221 .coo_io_init = vvp_io_init,
222 .coo_attr_get = vvp_attr_get,
223 .coo_attr_update = vvp_attr_update,
224 .coo_conf_set = vvp_conf_set,
225 .coo_prune = vvp_prune,
226 .coo_glimpse = vvp_object_glimpse,
227 .coo_req_attr_set = vvp_req_attr_set
230 static int vvp_object_init0(const struct lu_env *env,
231 struct vvp_object *vob,
232 const struct cl_object_conf *conf)
234 vob->vob_inode = conf->coc_inode;
235 atomic_set(&vob->vob_transient_pages, 0);
236 cl_object_page_init(&vob->vob_cl, sizeof(struct vvp_page));
240 static int vvp_object_init(const struct lu_env *env, struct lu_object *obj,
241 const struct lu_object_conf *conf)
243 struct vvp_device *dev = lu2vvp_dev(obj->lo_dev);
244 struct vvp_object *vob = lu2vvp(obj);
245 struct lu_object *below;
246 struct lu_device *under;
249 under = &dev->vdv_next->cd_lu_dev;
250 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
252 const struct cl_object_conf *cconf;
254 cconf = lu2cl_conf(conf);
255 lu_object_add(obj, below);
256 result = vvp_object_init0(env, vob, cconf);
263 static void vvp_object_free(const struct lu_env *env, struct lu_object *obj)
265 struct vvp_object *vob = lu2vvp(obj);
268 lu_object_header_fini(obj->lo_header);
269 OBD_SLAB_FREE_PTR(vob, vvp_object_kmem);
272 static const struct lu_object_operations vvp_lu_obj_ops = {
273 .loo_object_init = vvp_object_init,
274 .loo_object_free = vvp_object_free,
275 .loo_object_print = vvp_object_print,
278 struct vvp_object *cl_inode2vvp(struct inode *inode)
280 struct ll_inode_info *lli = ll_i2info(inode);
281 struct cl_object *obj = lli->lli_clob;
282 struct lu_object *lu;
284 LASSERT(obj != NULL);
285 lu = lu_object_locate(obj->co_lu.lo_header, &vvp_device_type);
291 struct lu_object *vvp_object_alloc(const struct lu_env *env,
292 const struct lu_object_header *unused,
293 struct lu_device *dev)
295 struct vvp_object *vob;
296 struct lu_object *obj;
298 OBD_SLAB_ALLOC_PTR_GFP(vob, vvp_object_kmem, GFP_NOFS);
300 struct cl_object_header *hdr;
302 obj = &vob->vob_cl.co_lu;
303 hdr = &vob->vob_header;
304 cl_object_header_init(hdr);
305 hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page));
307 lu_object_init(obj, &hdr->coh_lu, dev);
308 lu_object_add_top(&hdr->coh_lu, obj);
310 vob->vob_cl.co_ops = &vvp_ops;
311 obj->lo_ops = &vvp_lu_obj_ops;