blob: b9da9a0281c9b916e33d3d226abf36130a76b06c [file] [log] [blame]
Mike Marshall1182fca2015-07-17 10:38:15 -04001/*
2 * (C) 2001 Clemson University and The University of Chicago
3 *
4 * See COPYING in top-level directory.
5 */
6
7#include "protocol.h"
Mike Marshall575e9462015-12-04 12:56:14 -05008#include "orangefs-kernel.h"
9#include "orangefs-bufmap.h"
Mike Marshall1182fca2015-07-17 10:38:15 -040010
11#include <linux/parser.h>
12
Yi Liu8bb8aef2015-11-24 15:12:14 -050013/* a cache for orangefs-inode objects (i.e. orangefs inode private data) */
14static struct kmem_cache *orangefs_inode_cache;
Mike Marshall1182fca2015-07-17 10:38:15 -040015
Yi Liu8bb8aef2015-11-24 15:12:14 -050016/* list for storing orangefs specific superblocks in use */
17LIST_HEAD(orangefs_superblocks);
Mike Marshall1182fca2015-07-17 10:38:15 -040018
Yi Liu8bb8aef2015-11-24 15:12:14 -050019DEFINE_SPINLOCK(orangefs_superblocks_lock);
Mike Marshall1182fca2015-07-17 10:38:15 -040020
21enum {
22 Opt_intr,
23 Opt_acl,
24 Opt_local_lock,
25
26 Opt_err
27};
28
29static const match_table_t tokens = {
30 { Opt_acl, "acl" },
31 { Opt_intr, "intr" },
32 { Opt_local_lock, "local_lock" },
33 { Opt_err, NULL }
34};
35
36
37static int parse_mount_options(struct super_block *sb, char *options,
38 int silent)
39{
Yi Liu8bb8aef2015-11-24 15:12:14 -050040 struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb);
Mike Marshall1182fca2015-07-17 10:38:15 -040041 substring_t args[MAX_OPT_ARGS];
42 char *p;
43
44 /*
45 * Force any potential flags that might be set from the mount
46 * to zero, ie, initialize to unset.
47 */
48 sb->s_flags &= ~MS_POSIXACL;
Yi Liu8bb8aef2015-11-24 15:12:14 -050049 orangefs_sb->flags &= ~ORANGEFS_OPT_INTR;
50 orangefs_sb->flags &= ~ORANGEFS_OPT_LOCAL_LOCK;
Mike Marshall1182fca2015-07-17 10:38:15 -040051
52 while ((p = strsep(&options, ",")) != NULL) {
53 int token;
54
55 if (!*p)
56 continue;
57
58 token = match_token(p, tokens, args);
59 switch (token) {
60 case Opt_acl:
61 sb->s_flags |= MS_POSIXACL;
62 break;
63 case Opt_intr:
Yi Liu8bb8aef2015-11-24 15:12:14 -050064 orangefs_sb->flags |= ORANGEFS_OPT_INTR;
Mike Marshall1182fca2015-07-17 10:38:15 -040065 break;
66 case Opt_local_lock:
Yi Liu8bb8aef2015-11-24 15:12:14 -050067 orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK;
Mike Marshall1182fca2015-07-17 10:38:15 -040068 break;
69 default:
70 goto fail;
71 }
72 }
73
74 return 0;
75fail:
76 if (!silent)
77 gossip_err("Error: mount option [%s] is not supported.\n", p);
78 return -EINVAL;
79}
80
Yi Liu8bb8aef2015-11-24 15:12:14 -050081static void orangefs_inode_cache_ctor(void *req)
Mike Marshall1182fca2015-07-17 10:38:15 -040082{
Yi Liu8bb8aef2015-11-24 15:12:14 -050083 struct orangefs_inode_s *orangefs_inode = req;
Mike Marshall1182fca2015-07-17 10:38:15 -040084
Yi Liu8bb8aef2015-11-24 15:12:14 -050085 inode_init_once(&orangefs_inode->vfs_inode);
86 init_rwsem(&orangefs_inode->xattr_sem);
Mike Marshall1182fca2015-07-17 10:38:15 -040087
Yi Liu8bb8aef2015-11-24 15:12:14 -050088 orangefs_inode->vfs_inode.i_version = 1;
Mike Marshall1182fca2015-07-17 10:38:15 -040089}
90
Yi Liu8bb8aef2015-11-24 15:12:14 -050091static struct inode *orangefs_alloc_inode(struct super_block *sb)
Mike Marshall1182fca2015-07-17 10:38:15 -040092{
Yi Liu8bb8aef2015-11-24 15:12:14 -050093 struct orangefs_inode_s *orangefs_inode;
Mike Marshall1182fca2015-07-17 10:38:15 -040094
Mike Marshall2d4cae02016-02-04 13:48:16 -050095 orangefs_inode = kmem_cache_alloc(orangefs_inode_cache, GFP_KERNEL);
Yi Liu8bb8aef2015-11-24 15:12:14 -050096 if (orangefs_inode == NULL) {
97 gossip_err("Failed to allocate orangefs_inode\n");
Mike Marshall1182fca2015-07-17 10:38:15 -040098 return NULL;
99 }
100
101 /*
102 * We want to clear everything except for rw_semaphore and the
103 * vfs_inode.
104 */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500105 memset(&orangefs_inode->refn.khandle, 0, 16);
106 orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL;
107 orangefs_inode->last_failed_block_index_read = 0;
108 memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target));
109 orangefs_inode->pinode_flags = 0;
Mike Marshall1182fca2015-07-17 10:38:15 -0400110
111 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500112 "orangefs_alloc_inode: allocated %p\n",
113 &orangefs_inode->vfs_inode);
114 return &orangefs_inode->vfs_inode;
Mike Marshall1182fca2015-07-17 10:38:15 -0400115}
116
Yi Liu8bb8aef2015-11-24 15:12:14 -0500117static void orangefs_destroy_inode(struct inode *inode)
Mike Marshall1182fca2015-07-17 10:38:15 -0400118{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500119 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
Mike Marshall1182fca2015-07-17 10:38:15 -0400120
121 gossip_debug(GOSSIP_SUPER_DEBUG,
122 "%s: deallocated %p destroying inode %pU\n",
Yi Liu8bb8aef2015-11-24 15:12:14 -0500123 __func__, orangefs_inode, get_khandle_from_ino(inode));
Mike Marshall1182fca2015-07-17 10:38:15 -0400124
Yi Liu8bb8aef2015-11-24 15:12:14 -0500125 kmem_cache_free(orangefs_inode_cache, orangefs_inode);
Mike Marshall1182fca2015-07-17 10:38:15 -0400126}
127
128/*
129 * NOTE: information filled in here is typically reflected in the
130 * output of the system command 'df'
131*/
Yi Liu8bb8aef2015-11-24 15:12:14 -0500132static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf)
Mike Marshall1182fca2015-07-17 10:38:15 -0400133{
134 int ret = -ENOMEM;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500135 struct orangefs_kernel_op_s *new_op = NULL;
Mike Marshall1182fca2015-07-17 10:38:15 -0400136 int flags = 0;
137 struct super_block *sb = NULL;
138
139 sb = dentry->d_sb;
140
141 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500142 "orangefs_statfs: called on sb %p (fs_id is %d)\n",
Mike Marshall1182fca2015-07-17 10:38:15 -0400143 sb,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500144 (int)(ORANGEFS_SB(sb)->fs_id));
Mike Marshall1182fca2015-07-17 10:38:15 -0400145
Yi Liu8bb8aef2015-11-24 15:12:14 -0500146 new_op = op_alloc(ORANGEFS_VFS_OP_STATFS);
Mike Marshall1182fca2015-07-17 10:38:15 -0400147 if (!new_op)
148 return ret;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500149 new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id;
Mike Marshall1182fca2015-07-17 10:38:15 -0400150
Yi Liu8bb8aef2015-11-24 15:12:14 -0500151 if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR)
152 flags = ORANGEFS_OP_INTERRUPTIBLE;
Mike Marshall1182fca2015-07-17 10:38:15 -0400153
Yi Liu8bb8aef2015-11-24 15:12:14 -0500154 ret = service_operation(new_op, "orangefs_statfs", flags);
Mike Marshall1182fca2015-07-17 10:38:15 -0400155
156 if (new_op->downcall.status < 0)
157 goto out_op_release;
158
159 gossip_debug(GOSSIP_SUPER_DEBUG,
Mike Marshallbe573662016-01-13 11:38:14 -0500160 "%s: got %ld blocks available | "
161 "%ld blocks total | %ld block size | "
162 "%ld files total | %ld files avail\n",
163 __func__,
Mike Marshall1182fca2015-07-17 10:38:15 -0400164 (long)new_op->downcall.resp.statfs.blocks_avail,
165 (long)new_op->downcall.resp.statfs.blocks_total,
Mike Marshallbe573662016-01-13 11:38:14 -0500166 (long)new_op->downcall.resp.statfs.block_size,
167 (long)new_op->downcall.resp.statfs.files_total,
168 (long)new_op->downcall.resp.statfs.files_avail);
Mike Marshall1182fca2015-07-17 10:38:15 -0400169
170 buf->f_type = sb->s_magic;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500171 memcpy(&buf->f_fsid, &ORANGEFS_SB(sb)->fs_id, sizeof(buf->f_fsid));
Mike Marshall1182fca2015-07-17 10:38:15 -0400172 buf->f_bsize = new_op->downcall.resp.statfs.block_size;
Martin Brandenburg47b49482016-02-20 14:22:40 -0500173 buf->f_namelen = ORANGEFS_NAME_MAX;
Mike Marshall1182fca2015-07-17 10:38:15 -0400174
175 buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total;
176 buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
177 buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
178 buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total;
179 buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail;
180 buf->f_frsize = sb->s_blocksize;
181
182out_op_release:
183 op_release(new_op);
Yi Liu8bb8aef2015-11-24 15:12:14 -0500184 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_statfs: returning %d\n", ret);
Mike Marshall1182fca2015-07-17 10:38:15 -0400185 return ret;
186}
187
188/*
189 * Remount as initiated by VFS layer. We just need to reparse the mount
190 * options, no need to signal pvfs2-client-core about it.
191 */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500192static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data)
Mike Marshall1182fca2015-07-17 10:38:15 -0400193{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500194 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n");
Mike Marshall1182fca2015-07-17 10:38:15 -0400195 return parse_mount_options(sb, data, 1);
196}
197
198/*
199 * Remount as initiated by pvfs2-client-core on restart. This is used to
200 * repopulate mount information left from previous pvfs2-client-core.
201 *
202 * the idea here is that given a valid superblock, we're
203 * re-initializing the user space client with the initial mount
204 * information specified when the super block was first initialized.
205 * this is very different than the first initialization/creation of a
206 * superblock. we use the special service_priority_operation to make
207 * sure that the mount gets ahead of any other pending operation that
208 * is waiting for servicing. this means that the pvfs2-client won't
209 * fail to start several times for all other pending operations before
210 * the client regains all of the mount information from us.
211 * NOTE: this function assumes that the request_mutex is already acquired!
212 */
Al Viro45996492016-03-25 19:56:34 -0400213int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb)
Mike Marshall1182fca2015-07-17 10:38:15 -0400214{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500215 struct orangefs_kernel_op_s *new_op;
Mike Marshall1182fca2015-07-17 10:38:15 -0400216 int ret = -EINVAL;
217
Yi Liu8bb8aef2015-11-24 15:12:14 -0500218 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n");
Mike Marshall1182fca2015-07-17 10:38:15 -0400219
Yi Liu8bb8aef2015-11-24 15:12:14 -0500220 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
Mike Marshall1182fca2015-07-17 10:38:15 -0400221 if (!new_op)
222 return -ENOMEM;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500223 strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
Al Viro45996492016-03-25 19:56:34 -0400224 orangefs_sb->devname,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500225 ORANGEFS_MAX_SERVER_ADDR_LEN);
Mike Marshall1182fca2015-07-17 10:38:15 -0400226
227 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500228 "Attempting ORANGEFS Remount via host %s\n",
229 new_op->upcall.req.fs_mount.orangefs_config_server);
Mike Marshall1182fca2015-07-17 10:38:15 -0400230
231 /*
Mike Marshalladcf34a2016-02-24 16:54:27 -0500232 * we assume that the calling function has already acquired the
Mike Marshall1182fca2015-07-17 10:38:15 -0400233 * request_mutex to prevent other operations from bypassing
234 * this one
235 */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500236 ret = service_operation(new_op, "orangefs_remount",
Mike Marshalladcf34a2016-02-24 16:54:27 -0500237 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
Mike Marshall1182fca2015-07-17 10:38:15 -0400238 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500239 "orangefs_remount: mount got return value of %d\n",
Mike Marshall1182fca2015-07-17 10:38:15 -0400240 ret);
241 if (ret == 0) {
242 /*
243 * store the id assigned to this sb -- it's just a
244 * short-lived mapping that the system interface uses
245 * to map this superblock to a particular mount entry
246 */
Al Viro45996492016-03-25 19:56:34 -0400247 orangefs_sb->id = new_op->downcall.resp.fs_mount.id;
248 orangefs_sb->mount_pending = 0;
Mike Marshall1182fca2015-07-17 10:38:15 -0400249 }
250
251 op_release(new_op);
252 return ret;
253}
254
255int fsid_key_table_initialize(void)
256{
257 return 0;
258}
259
260void fsid_key_table_finalize(void)
261{
262}
263
264/* Called whenever the VFS dirties the inode in response to atime updates */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500265static void orangefs_dirty_inode(struct inode *inode, int flags)
Mike Marshall1182fca2015-07-17 10:38:15 -0400266{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500267 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
Mike Marshall1182fca2015-07-17 10:38:15 -0400268
269 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500270 "orangefs_dirty_inode: %pU\n",
Mike Marshall1182fca2015-07-17 10:38:15 -0400271 get_khandle_from_ino(inode));
Yi Liu8bb8aef2015-11-24 15:12:14 -0500272 SetAtimeFlag(orangefs_inode);
Mike Marshall1182fca2015-07-17 10:38:15 -0400273}
274
Yi Liu8bb8aef2015-11-24 15:12:14 -0500275static const struct super_operations orangefs_s_ops = {
276 .alloc_inode = orangefs_alloc_inode,
277 .destroy_inode = orangefs_destroy_inode,
278 .dirty_inode = orangefs_dirty_inode,
Mike Marshall1182fca2015-07-17 10:38:15 -0400279 .drop_inode = generic_delete_inode,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500280 .statfs = orangefs_statfs,
281 .remount_fs = orangefs_remount_fs,
Mike Marshall1182fca2015-07-17 10:38:15 -0400282 .show_options = generic_show_options,
283};
284
Yi Liu8bb8aef2015-11-24 15:12:14 -0500285static struct dentry *orangefs_fh_to_dentry(struct super_block *sb,
Mike Marshall1182fca2015-07-17 10:38:15 -0400286 struct fid *fid,
287 int fh_len,
288 int fh_type)
289{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500290 struct orangefs_object_kref refn;
Mike Marshall1182fca2015-07-17 10:38:15 -0400291
292 if (fh_len < 5 || fh_type > 2)
293 return NULL;
294
Yi Liu8bb8aef2015-11-24 15:12:14 -0500295 ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16);
Mike Marshall1182fca2015-07-17 10:38:15 -0400296 refn.fs_id = (u32) fid->raw[4];
297 gossip_debug(GOSSIP_SUPER_DEBUG,
298 "fh_to_dentry: handle %pU, fs_id %d\n",
299 &refn.khandle,
300 refn.fs_id);
301
Yi Liu8bb8aef2015-11-24 15:12:14 -0500302 return d_obtain_alias(orangefs_iget(sb, &refn));
Mike Marshall1182fca2015-07-17 10:38:15 -0400303}
304
Yi Liu8bb8aef2015-11-24 15:12:14 -0500305static int orangefs_encode_fh(struct inode *inode,
Mike Marshall1182fca2015-07-17 10:38:15 -0400306 __u32 *fh,
307 int *max_len,
308 struct inode *parent)
309{
310 int len = parent ? 10 : 5;
311 int type = 1;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500312 struct orangefs_object_kref refn;
Mike Marshall1182fca2015-07-17 10:38:15 -0400313
314 if (*max_len < len) {
315 gossip_lerr("fh buffer is too small for encoding\n");
316 *max_len = len;
317 type = 255;
318 goto out;
319 }
320
Yi Liu8bb8aef2015-11-24 15:12:14 -0500321 refn = ORANGEFS_I(inode)->refn;
322 ORANGEFS_khandle_to(&refn.khandle, fh, 16);
Mike Marshall1182fca2015-07-17 10:38:15 -0400323 fh[4] = refn.fs_id;
324
325 gossip_debug(GOSSIP_SUPER_DEBUG,
326 "Encoding fh: handle %pU, fsid %u\n",
327 &refn.khandle,
328 refn.fs_id);
329
330
331 if (parent) {
Yi Liu8bb8aef2015-11-24 15:12:14 -0500332 refn = ORANGEFS_I(parent)->refn;
333 ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16);
Mike Marshall1182fca2015-07-17 10:38:15 -0400334 fh[9] = refn.fs_id;
335
336 type = 2;
337 gossip_debug(GOSSIP_SUPER_DEBUG,
338 "Encoding parent: handle %pU, fsid %u\n",
339 &refn.khandle,
340 refn.fs_id);
341 }
342 *max_len = len;
343
344out:
345 return type;
346}
347
Julia Lawallacaca362016-01-01 10:01:52 +0100348static const struct export_operations orangefs_export_ops = {
Yi Liu8bb8aef2015-11-24 15:12:14 -0500349 .encode_fh = orangefs_encode_fh,
350 .fh_to_dentry = orangefs_fh_to_dentry,
Mike Marshall1182fca2015-07-17 10:38:15 -0400351};
352
Yi Liu8bb8aef2015-11-24 15:12:14 -0500353static int orangefs_fill_sb(struct super_block *sb,
354 struct orangefs_fs_mount_response *fs_mount,
Al Viro5c0dbbc2015-10-08 20:22:43 -0400355 void *data, int silent)
Mike Marshall1182fca2015-07-17 10:38:15 -0400356{
357 int ret = -EINVAL;
358 struct inode *root = NULL;
359 struct dentry *root_dentry = NULL;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500360 struct orangefs_object_kref root_object;
Mike Marshall1182fca2015-07-17 10:38:15 -0400361
Yi Liu8bb8aef2015-11-24 15:12:14 -0500362 /* alloc and init our private orangefs sb info */
Martin Brandenburg05d31c52016-03-18 13:36:45 -0400363 sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL);
Yi Liu8bb8aef2015-11-24 15:12:14 -0500364 if (!ORANGEFS_SB(sb))
Mike Marshall1182fca2015-07-17 10:38:15 -0400365 return -ENOMEM;
Yi Liu8bb8aef2015-11-24 15:12:14 -0500366 ORANGEFS_SB(sb)->sb = sb;
Mike Marshall1182fca2015-07-17 10:38:15 -0400367
Yi Liu8bb8aef2015-11-24 15:12:14 -0500368 ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle;
369 ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id;
370 ORANGEFS_SB(sb)->id = fs_mount->id;
Mike Marshall1182fca2015-07-17 10:38:15 -0400371
Al Viro5c0dbbc2015-10-08 20:22:43 -0400372 if (data) {
373 ret = parse_mount_options(sb, data, silent);
Mike Marshall1182fca2015-07-17 10:38:15 -0400374 if (ret)
375 return ret;
376 }
377
378 /* Hang the xattr handlers off the superblock */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500379 sb->s_xattr = orangefs_xattr_handlers;
380 sb->s_magic = ORANGEFS_SUPER_MAGIC;
381 sb->s_op = &orangefs_s_ops;
382 sb->s_d_op = &orangefs_dentry_operations;
Mike Marshall1182fca2015-07-17 10:38:15 -0400383
Yi Liu8bb8aef2015-11-24 15:12:14 -0500384 sb->s_blocksize = orangefs_bufmap_size_query();
385 sb->s_blocksize_bits = orangefs_bufmap_shift_query();
Mike Marshall1182fca2015-07-17 10:38:15 -0400386 sb->s_maxbytes = MAX_LFS_FILESIZE;
387
Yi Liu8bb8aef2015-11-24 15:12:14 -0500388 root_object.khandle = ORANGEFS_SB(sb)->root_khandle;
389 root_object.fs_id = ORANGEFS_SB(sb)->fs_id;
Mike Marshall1182fca2015-07-17 10:38:15 -0400390 gossip_debug(GOSSIP_SUPER_DEBUG,
391 "get inode %pU, fsid %d\n",
392 &root_object.khandle,
393 root_object.fs_id);
394
Yi Liu8bb8aef2015-11-24 15:12:14 -0500395 root = orangefs_iget(sb, &root_object);
Mike Marshall1182fca2015-07-17 10:38:15 -0400396 if (IS_ERR(root))
397 return PTR_ERR(root);
398
399 gossip_debug(GOSSIP_SUPER_DEBUG,
400 "Allocated root inode [%p] with mode %x\n",
401 root,
402 root->i_mode);
403
404 /* allocates and places root dentry in dcache */
405 root_dentry = d_make_root(root);
Al Virob05a7852015-10-08 20:18:00 -0400406 if (!root_dentry)
Mike Marshall1182fca2015-07-17 10:38:15 -0400407 return -ENOMEM;
Mike Marshall1182fca2015-07-17 10:38:15 -0400408
Yi Liu8bb8aef2015-11-24 15:12:14 -0500409 sb->s_export_op = &orangefs_export_ops;
Mike Marshall1182fca2015-07-17 10:38:15 -0400410 sb->s_root = root_dentry;
411 return 0;
412}
413
Yi Liu8bb8aef2015-11-24 15:12:14 -0500414struct dentry *orangefs_mount(struct file_system_type *fst,
Mike Marshall1182fca2015-07-17 10:38:15 -0400415 int flags,
416 const char *devname,
417 void *data)
418{
419 int ret = -EINVAL;
420 struct super_block *sb = ERR_PTR(-EINVAL);
Yi Liu8bb8aef2015-11-24 15:12:14 -0500421 struct orangefs_kernel_op_s *new_op;
Mike Marshall1be21f82015-09-29 15:26:37 -0400422 struct dentry *d = ERR_PTR(-EINVAL);
Mike Marshall1182fca2015-07-17 10:38:15 -0400423
424 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500425 "orangefs_mount: called with devname %s\n",
Mike Marshall1182fca2015-07-17 10:38:15 -0400426 devname);
427
428 if (!devname) {
429 gossip_err("ERROR: device name not specified.\n");
430 return ERR_PTR(-EINVAL);
431 }
432
Yi Liu8bb8aef2015-11-24 15:12:14 -0500433 new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
Mike Marshall1182fca2015-07-17 10:38:15 -0400434 if (!new_op)
435 return ERR_PTR(-ENOMEM);
436
Yi Liu8bb8aef2015-11-24 15:12:14 -0500437 strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
Mike Marshall1182fca2015-07-17 10:38:15 -0400438 devname,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500439 ORANGEFS_MAX_SERVER_ADDR_LEN);
Mike Marshall1182fca2015-07-17 10:38:15 -0400440
441 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500442 "Attempting ORANGEFS Mount via host %s\n",
443 new_op->upcall.req.fs_mount.orangefs_config_server);
Mike Marshall1182fca2015-07-17 10:38:15 -0400444
Yi Liu8bb8aef2015-11-24 15:12:14 -0500445 ret = service_operation(new_op, "orangefs_mount", 0);
Mike Marshall1182fca2015-07-17 10:38:15 -0400446 gossip_debug(GOSSIP_SUPER_DEBUG,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500447 "orangefs_mount: mount got return value of %d\n", ret);
Mike Marshall1182fca2015-07-17 10:38:15 -0400448 if (ret)
449 goto free_op;
450
Yi Liu8bb8aef2015-11-24 15:12:14 -0500451 if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) {
Mike Marshall1182fca2015-07-17 10:38:15 -0400452 gossip_err("ERROR: Retrieved null fs_id\n");
453 ret = -EINVAL;
454 goto free_op;
455 }
456
Mike Marshall1be21f82015-09-29 15:26:37 -0400457 sb = sget(fst, NULL, set_anon_super, flags, NULL);
458
459 if (IS_ERR(sb)) {
460 d = ERR_CAST(sb);
Mike Marshall1182fca2015-07-17 10:38:15 -0400461 goto free_op;
462 }
463
Yi Liu8bb8aef2015-11-24 15:12:14 -0500464 ret = orangefs_fill_sb(sb,
Al Viro5c0dbbc2015-10-08 20:22:43 -0400465 &new_op->downcall.resp.fs_mount, data,
Mike Marshall1be21f82015-09-29 15:26:37 -0400466 flags & MS_SILENT ? 1 : 0);
467
468 if (ret) {
469 d = ERR_PTR(ret);
470 goto free_op;
471 }
Mike Marshall1182fca2015-07-17 10:38:15 -0400472
473 /*
474 * on successful mount, store the devname and data
475 * used
476 */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500477 strncpy(ORANGEFS_SB(sb)->devname,
Mike Marshall1182fca2015-07-17 10:38:15 -0400478 devname,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500479 ORANGEFS_MAX_SERVER_ADDR_LEN);
Mike Marshall1182fca2015-07-17 10:38:15 -0400480
481 /* mount_pending must be cleared */
Yi Liu8bb8aef2015-11-24 15:12:14 -0500482 ORANGEFS_SB(sb)->mount_pending = 0;
Mike Marshall1182fca2015-07-17 10:38:15 -0400483
484 /*
Yi Liu8bb8aef2015-11-24 15:12:14 -0500485 * finally, add this sb to our list of known orangefs
Mike Marshall1182fca2015-07-17 10:38:15 -0400486 * sb's
487 */
Al Viro45996492016-03-25 19:56:34 -0400488 gossip_debug(GOSSIP_SUPER_DEBUG,
489 "Adding SB %p to orangefs superblocks\n",
490 ORANGEFS_SB(sb));
491 spin_lock(&orangefs_superblocks_lock);
492 list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks);
493 spin_unlock(&orangefs_superblocks_lock);
Mike Marshall1182fca2015-07-17 10:38:15 -0400494 op_release(new_op);
Mike Marshall1be21f82015-09-29 15:26:37 -0400495 return dget(sb->s_root);
Mike Marshall1182fca2015-07-17 10:38:15 -0400496
497free_op:
Yi Liu8bb8aef2015-11-24 15:12:14 -0500498 gossip_err("orangefs_mount: mount request failed with %d\n", ret);
Mike Marshall1182fca2015-07-17 10:38:15 -0400499 if (ret == -EINVAL) {
Yi Liu8bb8aef2015-11-24 15:12:14 -0500500 gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n");
Mike Marshall1182fca2015-07-17 10:38:15 -0400501 gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n");
502 }
503
504 op_release(new_op);
505
Mike Marshall1be21f82015-09-29 15:26:37 -0400506 return d;
Mike Marshall1182fca2015-07-17 10:38:15 -0400507}
508
Yi Liu8bb8aef2015-11-24 15:12:14 -0500509void orangefs_kill_sb(struct super_block *sb)
Mike Marshall1182fca2015-07-17 10:38:15 -0400510{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500511 gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n");
Mike Marshall1182fca2015-07-17 10:38:15 -0400512
Al Viro524b1d32016-02-16 21:08:29 -0500513 /* provided sb cleanup */
514 kill_anon_super(sb);
515
Mike Marshall1182fca2015-07-17 10:38:15 -0400516 /*
517 * issue the unmount to userspace to tell it to remove the
518 * dynamic mount info it has for this superblock
519 */
Al Viro45996492016-03-25 19:56:34 -0400520 orangefs_unmount_sb(sb);
Mike Marshall1182fca2015-07-17 10:38:15 -0400521
Yi Liu8bb8aef2015-11-24 15:12:14 -0500522 /* remove the sb from our list of orangefs specific sb's */
Al Viro45996492016-03-25 19:56:34 -0400523
524 spin_lock(&orangefs_superblocks_lock);
525 __list_del_entry(&ORANGEFS_SB(sb)->list); /* not list_del_init */
526 ORANGEFS_SB(sb)->list.prev = NULL;
527 spin_unlock(&orangefs_superblocks_lock);
528
529 /*
530 * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us
531 * gets completed before we free the dang thing.
532 */
533 mutex_lock(&request_mutex);
534 mutex_unlock(&request_mutex);
Mike Marshall1182fca2015-07-17 10:38:15 -0400535
Yi Liu8bb8aef2015-11-24 15:12:14 -0500536 /* free the orangefs superblock private data */
537 kfree(ORANGEFS_SB(sb));
Mike Marshall1182fca2015-07-17 10:38:15 -0400538}
539
Yi Liu8bb8aef2015-11-24 15:12:14 -0500540int orangefs_inode_cache_initialize(void)
Mike Marshall1182fca2015-07-17 10:38:15 -0400541{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500542 orangefs_inode_cache = kmem_cache_create("orangefs_inode_cache",
543 sizeof(struct orangefs_inode_s),
Mike Marshall1182fca2015-07-17 10:38:15 -0400544 0,
Yi Liu8bb8aef2015-11-24 15:12:14 -0500545 ORANGEFS_CACHE_CREATE_FLAGS,
546 orangefs_inode_cache_ctor);
Mike Marshall1182fca2015-07-17 10:38:15 -0400547
Yi Liu8bb8aef2015-11-24 15:12:14 -0500548 if (!orangefs_inode_cache) {
549 gossip_err("Cannot create orangefs_inode_cache\n");
Mike Marshall1182fca2015-07-17 10:38:15 -0400550 return -ENOMEM;
551 }
552 return 0;
553}
554
Yi Liu8bb8aef2015-11-24 15:12:14 -0500555int orangefs_inode_cache_finalize(void)
Mike Marshall1182fca2015-07-17 10:38:15 -0400556{
Yi Liu8bb8aef2015-11-24 15:12:14 -0500557 kmem_cache_destroy(orangefs_inode_cache);
Mike Marshall1182fca2015-07-17 10:38:15 -0400558 return 0;
559}