1 #ifndef __LINUX_CLASS_OBD_H
2 #define __LINUX_CLASS_OBD_H
4 * Copyright (C) 2001 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
13 #include <linux/list.h>
16 #include <asm/segment.h>
17 #include <asm/uaccess.h>
18 #include <linux/types.h>
20 #include <linux/time.h>
22 #include <linux/lustre_lib.h>
23 #include <linux/lustre_idl.h>
24 #include <linux/obd.h>
28 * ======== OBD Device Declarations ===========
30 #define MAX_OBD_DEVICES 8
32 extern struct obd_device obd_dev[MAX_OBD_DEVICES];
34 #define OBD_ATTACHED 0x1
35 #define OBD_SET_UP 0x2
38 struct obd_device *oc_dev;
45 struct dentry *dentry; /* file system obd device names */
46 __u8 _uuid[16]; /* uuid obd device names */
49 #include <linux/obd_ext2.h>
50 #include <linux/obd_filter.h>
51 #include <linux/lustre_mds.h>
52 #include <linux/obd_snap.h>
53 #include <linux/obd_trace.h>
54 /* #include <linux/obd_fc.h> */
55 #include <linux/obd_raid1.h>
56 #include <linux/obd_ost.h>
59 /* corresponds to one of the obdx */
61 struct obd_type *obd_type;
65 obd_devicename obd_fsname;
66 struct proc_dir_entry *obd_proc_entry;
68 struct obd_conn obd_multi_conn[MAX_MULTI];
69 unsigned int obd_gen_last_id;
70 unsigned long obd_gen_prealloc_quota;
71 struct list_head obd_gen_clients;
74 struct filter_obd filter;
76 struct raid1_obd raid1;
78 struct trace_obd trace;
84 extern struct proc_dir_entry *proc_lustre_register_obd_device(struct obd_device *obd);
85 extern void proc_lustre_release_obd_device(struct obd_device *obd);
86 extern void proc_lustre_remove_obd_entry(const char* name, struct obd_device *obd);
89 * ======== OBD Operations Declarations ===========
92 #define OBD_BRW_READ (READ)
93 #define OBD_BRW_WRITE (WRITE)
94 #define OBD_BRW_RWMASK (READ | WRITE)
95 #define OBD_BRW_CREATE (0x00000010UL)
98 int (*o_iocontrol)(int cmd, struct obd_conn *, int len, void *karg,
100 int (*o_get_info)(struct obd_conn *, obd_count keylen, void *key,
101 obd_count *vallen, void **val);
102 int (*o_set_info)(struct obd_conn *, obd_count keylen, void *key,
103 obd_count vallen, void *val);
104 int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
105 int (*o_detach)(struct obd_device *dev);
106 int (*o_setup) (struct obd_device *dev, obd_count len, void *data);
107 int (*o_cleanup)(struct obd_device *dev);
108 int (*o_connect)(struct obd_conn *conn);
109 int (*o_disconnect)(struct obd_conn *conn);
110 int (*o_statfs)(struct obd_conn *conn, struct statfs *statfs);
111 int (*o_preallocate)(struct obd_conn *, obd_count *req, obd_id *ids);
112 int (*o_create)(struct obd_conn *conn, struct obdo *oa);
113 int (*o_destroy)(struct obd_conn *conn, struct obdo *oa);
114 int (*o_setattr)(struct obd_conn *conn, struct obdo *oa);
115 int (*o_getattr)(struct obd_conn *conn, struct obdo *oa);
116 int (*o_read)(struct obd_conn *conn, struct obdo *oa, char *buf,
117 obd_size *count, obd_off offset);
118 int (*o_write)(struct obd_conn *conn, struct obdo *oa, char *buf,
119 obd_size *count, obd_off offset);
120 int (*o_brw)(int rw, struct obd_conn *conn, obd_count num_oa,
121 struct obdo **oa, obd_count *oa_bufs, struct page **buf,
122 obd_size *count, obd_off *offset, obd_flag *flags);
123 int (*o_punch)(struct obd_conn *conn, struct obdo *tgt, obd_size count,
125 int (*o_sync)(struct obd_conn *conn, struct obdo *tgt, obd_size count,
127 int (*o_migrate)(struct obd_conn *conn, struct obdo *dst,
128 struct obdo *src, obd_size count, obd_off offset);
129 int (*o_copy)(struct obd_conn *dstconn, struct obdo *dst,
130 struct obd_conn *srconn, struct obdo *src,
131 obd_size count, obd_off offset);
132 int (*o_iterate)(struct obd_conn *conn, int (*)(obd_id, obd_gr, void *),
133 obd_id *startid, obd_gr group, void *data);
134 int (*o_dmaread)(struct obd_conn *conn, int count, struct obd_buf **dest,
135 struct obd_bufref **source);
136 int (*o_pre_dmawrite)(struct obd_conn *conn, int count, struct obd_buf **dstbufs,
137 struct obd_bufref **dest);
138 int (*o_dmawrite)(struct obd_conn *conn, int count, struct obd_buf **dstbufs,
139 struct obd_buf **dest);
144 struct obd_conn *conn;
152 #define OBT(dev) dev->obd_type->typ_ops
153 #define OBP(dev,op) dev->obd_type->typ_ops->o_ ## op
157 /* This value is not arbitrarily chosen. KIO_STATIC_PAGES from linux/iobuf.h */
158 #define MAX_IOVEC (KIO_STATIC_PAGES - 1)
162 * ======== OBD Metadata Support ===========
165 extern int obd_init_obdo_cache(void);
166 extern void obd_cleanup_obdo_cache(void);
169 static inline int obdo_has_inline(struct obdo *obdo)
171 return (obdo->o_valid & OBD_MD_FLINLINE &&
172 obdo->o_obdflags & OBD_FL_INLINEDATA);
175 static inline int obdo_has_obdmd(struct obdo *obdo)
177 return (obdo->o_valid & OBD_MD_FLOBDMD &&
178 obdo->o_obdflags & OBD_FL_OBDMDEXISTS);
182 /* support routines */
183 extern kmem_cache_t *obdo_cachep;
185 static __inline__ struct obdo *obdo_alloc(void)
187 struct obdo *oa = NULL;
189 oa = kmem_cache_alloc(obdo_cachep, SLAB_KERNEL);
190 memset(oa, 0, sizeof (*oa));
195 static __inline__ void obdo_free(struct obdo *oa)
199 kmem_cache_free(obdo_cachep, oa);
202 static __inline__ struct obdo *obdo_fromid(struct obd_conn *conn, obd_id id,
203 obd_mode mode, obd_flag valid)
212 return ERR_PTR(-ENOMEM);
218 if ((err = OBP(conn->oc_dev, getattr)(conn, oa))) {
227 static inline void obdo_from_iattr(struct obdo *oa, struct iattr *attr)
229 unsigned int ia_valid = attr->ia_valid;
231 if (ia_valid & ATTR_ATIME) {
232 oa->o_atime = attr->ia_atime;
233 oa->o_valid |= OBD_MD_FLATIME;
235 if (ia_valid & ATTR_MTIME) {
236 oa->o_mtime = attr->ia_mtime;
237 oa->o_valid |= OBD_MD_FLMTIME;
239 if (ia_valid & ATTR_CTIME) {
240 oa->o_ctime = attr->ia_ctime;
241 oa->o_valid |= OBD_MD_FLCTIME;
243 if (ia_valid & ATTR_SIZE) {
244 oa->o_size = attr->ia_size;
245 oa->o_valid |= OBD_MD_FLSIZE;
247 if (ia_valid & ATTR_MODE) {
248 oa->o_mode = attr->ia_mode;
249 oa->o_valid |= OBD_MD_FLMODE;
250 if (!in_group_p(oa->o_gid) && !capable(CAP_FSETID))
251 oa->o_mode &= ~S_ISGID;
253 if (ia_valid & ATTR_UID)
255 oa->o_uid = attr->ia_uid;
256 oa->o_valid |= OBD_MD_FLUID;
258 if (ia_valid & ATTR_GID) {
259 oa->o_gid = attr->ia_gid;
260 oa->o_valid |= OBD_MD_FLGID;
265 static inline void iattr_from_obdo(struct iattr *attr, struct obdo *oa)
267 unsigned int ia_valid = oa->o_valid;
269 memset(attr, 0, sizeof(*attr));
270 if (ia_valid & OBD_MD_FLATIME) {
271 attr->ia_atime = oa->o_atime;
272 attr->ia_valid |= ATTR_ATIME;
274 if (ia_valid & OBD_MD_FLMTIME) {
275 attr->ia_mtime = oa->o_mtime;
276 attr->ia_valid |= ATTR_MTIME;
278 if (ia_valid & OBD_MD_FLCTIME) {
279 attr->ia_ctime = oa->o_ctime;
280 attr->ia_valid |= ATTR_CTIME;
282 if (ia_valid & OBD_MD_FLSIZE) {
283 attr->ia_size = oa->o_size;
284 attr->ia_valid |= ATTR_SIZE;
286 if (ia_valid & OBD_MD_FLMODE) {
287 attr->ia_mode = oa->o_mode;
288 attr->ia_valid |= ATTR_MODE;
289 if (!in_group_p(oa->o_gid) && !capable(CAP_FSETID))
290 attr->ia_mode &= ~S_ISGID;
292 if (ia_valid & OBD_MD_FLUID)
294 attr->ia_uid = oa->o_uid;
295 attr->ia_valid |= ATTR_UID;
297 if (ia_valid & OBD_MD_FLGID) {
298 attr->ia_gid = oa->o_gid;
299 attr->ia_valid |= ATTR_GID;
304 /* WARNING: the file systems must take care not to tinker with
305 attributes they don't manage (such as blocks). */
307 static __inline__ void obdo_from_inode(struct obdo *dst, struct inode *src)
309 if ( dst->o_valid & OBD_MD_FLID )
310 dst->o_id = src->i_ino;
311 if ( dst->o_valid & OBD_MD_FLATIME )
312 dst->o_atime = src->i_atime;
313 if ( dst->o_valid & OBD_MD_FLMTIME )
314 dst->o_mtime = src->i_mtime;
315 if ( dst->o_valid & OBD_MD_FLCTIME )
316 dst->o_ctime = src->i_ctime;
317 if ( dst->o_valid & OBD_MD_FLSIZE )
318 dst->o_size = src->i_size;
319 if ( dst->o_valid & OBD_MD_FLBLOCKS ) /* allocation of space */
320 dst->o_blocks = src->i_blocks;
321 if ( dst->o_valid & OBD_MD_FLBLKSZ )
322 dst->o_blksize = src->i_blksize;
323 if ( dst->o_valid & OBD_MD_FLMODE )
324 dst->o_mode = src->i_mode;
325 if ( dst->o_valid & OBD_MD_FLUID )
326 dst->o_uid = src->i_uid;
327 if ( dst->o_valid & OBD_MD_FLGID )
328 dst->o_gid = src->i_gid;
329 if ( dst->o_valid & OBD_MD_FLFLAGS )
330 dst->o_flags = src->i_flags;
331 if ( dst->o_valid & OBD_MD_FLNLINK )
332 dst->o_nlink = src->i_nlink;
333 if ( dst->o_valid & OBD_MD_FLGENER )
334 dst->o_generation = src->i_generation;
337 static __inline__ void obdo_to_inode(struct inode *dst, struct obdo *src)
340 if ( src->o_valid & OBD_MD_FLID )
341 dst->i_ino = src->o_id;
342 if ( src->o_valid & OBD_MD_FLATIME )
343 dst->i_atime = src->o_atime;
344 if ( src->o_valid & OBD_MD_FLMTIME )
345 dst->i_mtime = src->o_mtime;
346 if ( src->o_valid & OBD_MD_FLCTIME )
347 dst->i_ctime = src->o_ctime;
348 if ( src->o_valid & OBD_MD_FLSIZE )
349 dst->i_size = src->o_size;
350 if ( src->o_valid & OBD_MD_FLBLOCKS ) /* allocation of space */
351 dst->i_blocks = src->o_blocks;
352 if ( src->o_valid & OBD_MD_FLBLKSZ )
353 dst->i_blksize = src->o_blksize;
354 if ( src->o_valid & OBD_MD_FLMODE )
355 dst->i_mode = src->o_mode;
356 if ( src->o_valid & OBD_MD_FLUID )
357 dst->i_uid = src->o_uid;
358 if ( src->o_valid & OBD_MD_FLGID )
359 dst->i_gid = src->o_gid;
360 if ( src->o_valid & OBD_MD_FLFLAGS )
361 dst->i_flags = src->o_flags;
362 if ( src->o_valid & OBD_MD_FLNLINK )
363 dst->i_nlink = src->o_nlink;
364 if ( src->o_valid & OBD_MD_FLGENER )
365 dst->i_generation = src->o_generation;
370 static __inline__ void obdo_cpy_md(struct obdo *dst, struct obdo *src)
373 CDEBUG(D_INODE, "src obdo %Ld valid 0x%x, dst obdo %Ld\n",
374 src->o_id, src->o_valid, dst->o_id);
376 if ( src->o_valid & OBD_MD_FLATIME )
377 dst->o_atime = src->o_atime;
378 if ( src->o_valid & OBD_MD_FLMTIME )
379 dst->o_mtime = src->o_mtime;
380 if ( src->o_valid & OBD_MD_FLCTIME )
381 dst->o_ctime = src->o_ctime;
382 if ( src->o_valid & OBD_MD_FLSIZE )
383 dst->o_size = src->o_size;
384 if ( src->o_valid & OBD_MD_FLBLOCKS ) /* allocation of space */
385 dst->o_blocks = src->o_blocks;
386 if ( src->o_valid & OBD_MD_FLBLKSZ )
387 dst->o_blksize = src->o_blksize;
388 if ( src->o_valid & OBD_MD_FLMODE )
389 dst->o_mode = src->o_mode;
390 if ( src->o_valid & OBD_MD_FLUID )
391 dst->o_uid = src->o_uid;
392 if ( src->o_valid & OBD_MD_FLGID )
393 dst->o_gid = src->o_gid;
394 if ( src->o_valid & OBD_MD_FLFLAGS )
395 dst->o_flags = src->o_flags;
397 if ( src->o_valid & OBD_MD_FLOBDFLG )
398 dst->o_obdflags = src->o_obdflags;
400 if ( src->o_valid & OBD_MD_FLNLINK )
401 dst->o_nlink = src->o_nlink;
402 if ( src->o_valid & OBD_MD_FLGENER )
403 dst->o_generation = src->o_generation;
404 if ( src->o_valid & OBD_MD_FLINLINE &&
405 src->o_obdflags & OBD_FL_INLINEDATA) {
406 memcpy(dst->o_inline, src->o_inline, sizeof(src->o_inline));
407 dst->o_obdflags |= OBD_FL_INLINEDATA;
409 if ( src->o_valid & OBD_MD_FLOBDMD &&
410 src->o_obdflags & OBD_FL_OBDMDEXISTS) {
411 memcpy(dst->o_obdmd, src->o_obdmd, sizeof(src->o_obdmd));
412 dst->o_obdflags |= OBD_FL_OBDMDEXISTS;
415 dst->o_valid |= src->o_valid;
419 /* returns FALSE if comparison (by flags) is same, TRUE if changed */
420 static __inline__ int obdo_cmp_md(struct obdo *dst, struct obdo *src,
425 if ( compare & OBD_MD_FLATIME )
426 res = (res || (dst->o_atime != src->o_atime));
427 if ( compare & OBD_MD_FLMTIME )
428 res = (res || (dst->o_mtime != src->o_mtime));
429 if ( compare & OBD_MD_FLCTIME )
430 res = (res || (dst->o_ctime != src->o_ctime));
431 if ( compare & OBD_MD_FLSIZE )
432 res = (res || (dst->o_size != src->o_size));
433 if ( compare & OBD_MD_FLBLOCKS ) /* allocation of space */
434 res = (res || (dst->o_blocks != src->o_blocks));
435 if ( compare & OBD_MD_FLBLKSZ )
436 res = (res || (dst->o_blksize != src->o_blksize));
437 if ( compare & OBD_MD_FLMODE )
438 res = (res || (dst->o_mode != src->o_mode));
439 if ( compare & OBD_MD_FLUID )
440 res = (res || (dst->o_uid != src->o_uid));
441 if ( compare & OBD_MD_FLGID )
442 res = (res || (dst->o_gid != src->o_gid));
443 if ( compare & OBD_MD_FLFLAGS )
444 res = (res || (dst->o_flags != src->o_flags));
445 if ( compare & OBD_MD_FLNLINK )
446 res = (res || (dst->o_nlink != src->o_nlink));
447 if ( compare & OBD_MD_FLGENER )
448 res = (res || (dst->o_generation != src->o_generation));
449 /* XXX Don't know if thses should be included here - wasn't previously
450 if ( compare & OBD_MD_FLINLINE )
451 res = (res || memcmp(dst->o_inline, src->o_inline));
452 if ( compare & OBD_MD_FLOBDMD )
453 res = (res || memcmp(dst->o_obdmd, src->o_obdmd));
460 int obd_register_type(struct obd_ops *ops, char *nm);
461 int obd_unregister_type(char *nm);
464 struct list_head cli_chain;
465 struct obd_device *cli_obd;
467 unsigned long cli_prealloc_quota;
468 struct list_head cli_prealloc_inodes;
472 struct obd_prealloc_inode {
473 struct list_head obd_prealloc_chain;
477 /* generic operations shared by various OBD types */
478 int gen_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
479 int gen_multi_cleanup(struct obd_device *obddev);
480 int gen_multi_attach(struct obd_device *obddev, uint32_t len, void *data);
481 int gen_multi_detach(struct obd_device *obddev);
482 int gen_connect (struct obd_conn *conn);
483 int gen_disconnect(struct obd_conn *conn);
484 struct obd_client *gen_client(const struct obd_conn *);
485 int gen_cleanup(struct obd_device *obddev);
486 int gen_copy_data(struct obd_conn *dst_conn, struct obdo *dst,
487 struct obd_conn *src_conn, struct obdo *src,
488 obd_size count, obd_off offset);
493 extern void obd_sysctl_init (void);
494 extern void obd_sysctl_clean (void);
496 #define CHKCONN(conn) do { if (!gen_client(conn)) {\
497 printk("%s %d invalid client %u\n", __FILE__, __LINE__, \
499 return -EINVAL; }} while (0)
503 #endif /* __LINUX_CLASS_OBD_H */