/* fid_be_cpu(), fid_cpu_to_be(). */
#include <lustre_fid.h>
+#include <lustre_param.h>
#include <linux/ldiskfs_fs.h>
#include <lustre_mds.h>
#include <lustre/lustre_idl.h>
static const struct lu_object_operations mdd_lu_obj_ops;
+static int mdd_xattr_get(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf,
+ const char *name);
+
+int mdd_data_get(const struct lu_env *env, struct mdd_object *obj,
+ void **data)
+{
+ LASSERTF(mdd_object_exists(obj), "FID is "DFID"\n",
+ PFID(mdd_object_fid(obj)));
+ mdo_data_get(env, obj, data);
+ return 0;
+}
+
int mdd_la_get(const struct lu_env *env, struct mdd_object *obj,
struct lu_attr *la, struct lustre_capa *capa)
{
obj->mod_flags |= IMMUTE_OBJ;
}
+struct mdd_thread_info *mdd_env_info(const struct lu_env *env)
+{
+ struct mdd_thread_info *info;
+
+ info = lu_context_key_get(&env->le_ctx, &mdd_thread_key);
+ LASSERT(info != NULL);
+ return info;
+}
+
struct lu_buf *mdd_buf_get(const struct lu_env *env, void *area, ssize_t len)
{
struct lu_buf *buf;
return buf;
}
+void mdd_buf_put(struct lu_buf *buf)
+{
+ if (buf == NULL || buf->lb_buf == NULL)
+ return;
+ if (buf->lb_vmalloc)
+ OBD_VFREE(buf->lb_buf, buf->lb_len);
+ else
+ OBD_FREE(buf->lb_buf, buf->lb_len);
+ buf->lb_buf = NULL;
+}
+
+const struct lu_buf *mdd_buf_get_const(const struct lu_env *env,
+ const void *area, ssize_t len)
+{
+ struct lu_buf *buf;
+
+ buf = &mdd_env_info(env)->mti_buf;
+ buf->lb_buf = (void *)area;
+ buf->lb_len = len;
+ return buf;
+}
+
+#define BUF_VMALLOC_SIZE (CFS_PAGE_SIZE<<2) /* 16k */
+struct lu_buf *mdd_buf_alloc(const struct lu_env *env, ssize_t len)
+{
+ struct lu_buf *buf = &mdd_env_info(env)->mti_big_buf;
+
+ if ((len > buf->lb_len) && (buf->lb_buf != NULL)) {
+ if (buf->lb_vmalloc)
+ OBD_VFREE(buf->lb_buf, buf->lb_len);
+ else
+ OBD_FREE(buf->lb_buf, buf->lb_len);
+ buf->lb_buf = NULL;
+ }
+ if (buf->lb_buf == NULL) {
+ buf->lb_len = len;
+ if (buf->lb_len <= BUF_VMALLOC_SIZE) {
+ OBD_ALLOC(buf->lb_buf, buf->lb_len);
+ buf->lb_vmalloc = 0;
+ }
+ if (buf->lb_buf == NULL) {
+ OBD_VMALLOC(buf->lb_buf, buf->lb_len);
+ buf->lb_vmalloc = 1;
+ }
+ if (buf->lb_buf == NULL)
+ buf->lb_len = 0;
+ }
+ return buf;
+}
+
+/** Increase the size of the \a mti_big_buf.
+ * preserves old data in buffer
+ * old buffer remains unchanged on error
+ * \retval 0 or -ENOMEM
+ */
+int mdd_buf_grow(const struct lu_env *env, ssize_t len)
+{
+ struct lu_buf *oldbuf = &mdd_env_info(env)->mti_big_buf;
+ struct lu_buf buf;
+
+ LASSERT(len >= oldbuf->lb_len);
+ if (len > BUF_VMALLOC_SIZE) {
+ OBD_VMALLOC(buf.lb_buf, len);
+ buf.lb_vmalloc = 1;
+ } else {
+ OBD_ALLOC(buf.lb_buf, len);
+ buf.lb_vmalloc = 0;
+ }
+ if (buf.lb_buf == NULL)
+ return -ENOMEM;
+
+ buf.lb_len = len;
+ memcpy(buf.lb_buf, oldbuf->lb_buf, oldbuf->lb_len);
+
+ if (oldbuf->lb_vmalloc)
+ OBD_VFREE(oldbuf->lb_buf, oldbuf->lb_len);
+ else
+ OBD_FREE(oldbuf->lb_buf, oldbuf->lb_len);
+
+ memcpy(oldbuf, &buf, sizeof(buf));
+
+ return 0;
+}
+
struct llog_cookie *mdd_max_cookie_get(const struct lu_env *env,
struct mdd_device *mdd)
{
return mti->mti_max_lmm;
}
-const struct lu_buf *mdd_buf_get_const(const struct lu_env *env,
- const void *area, ssize_t len)
-{
- struct lu_buf *buf;
-
- buf = &mdd_env_info(env)->mti_buf;
- buf->lb_buf = (void *)area;
- buf->lb_len = len;
- return buf;
-}
-
-struct mdd_thread_info *mdd_env_info(const struct lu_env *env)
-{
- struct mdd_thread_info *info;
-
- info = lu_context_key_get(&env->le_ctx, &mdd_thread_key);
- LASSERT(info != NULL);
- return info;
-}
-
struct lu_object *mdd_object_alloc(const struct lu_env *env,
const struct lu_object_header *hdr,
struct lu_device *d)
const struct lu_object_conf *_)
{
struct mdd_device *d = lu2mdd_dev(o->lo_dev);
+ struct mdd_object *mdd_obj = lu2mdd_obj(o);
struct lu_object *below;
struct lu_device *under;
ENTRY;
+ mdd_obj->mod_cltime = 0;
under = &d->mdd_child->dd_lu_dev;
below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
- mdd_pdlock_init(lu2mdd_obj(o));
+ mdd_pdlock_init(mdd_obj);
if (below == NULL)
RETURN(-ENOMEM);
lu_object_add(o, below);
+
RETURN(0);
}
}
static const struct lu_object_operations mdd_lu_obj_ops = {
- .loo_object_init = mdd_object_init,
- .loo_object_start = mdd_object_start,
- .loo_object_free = mdd_object_free,
- .loo_object_print = mdd_object_print,
+ .loo_object_init = mdd_object_init,
+ .loo_object_start = mdd_object_start,
+ .loo_object_free = mdd_object_free,
+ .loo_object_print = mdd_object_print,
};
struct mdd_object *mdd_object_find(const struct lu_env *env,
return md2mdd_obj(md_object_find_slice(env, &d->mdd_md_dev, f));
}
+static int mdd_path2fid(const struct lu_env *env, struct mdd_device *mdd,
+ const char *path, struct lu_fid *fid)
+{
+ struct lu_buf *buf;
+ struct lu_fid *f = &mdd_env_info(env)->mti_fid;
+ struct mdd_object *obj;
+ struct lu_name *lname = &mdd_env_info(env)->mti_name;
+ char *name;
+ int rc = 0;
+ ENTRY;
+
+ /* temp buffer for path element */
+ buf = mdd_buf_alloc(env, PATH_MAX);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+
+ lname->ln_name = name = buf->lb_buf;
+ lname->ln_namelen = 0;
+ *f = mdd->mdd_root_fid;
+
+ while(1) {
+ while (*path == '/')
+ path++;
+ if (*path == '\0')
+ break;
+ while (*path != '/' && *path != '\0') {
+ *name = *path;
+ path++;
+ name++;
+ lname->ln_namelen++;
+ }
+
+ *name = '\0';
+ /* find obj corresponding to fid */
+ obj = mdd_object_find(env, mdd, f);
+ if (obj == NULL)
+ GOTO(out, rc = -EREMOTE);
+ if (IS_ERR(obj))
+ GOTO(out, rc = -PTR_ERR(obj));
+ /* get child fid from parent and name */
+ rc = mdd_lookup(env, &obj->mod_obj, lname, f, NULL);
+ mdd_object_put(env, obj);
+ if (rc)
+ break;
+
+ name = buf->lb_buf;
+ lname->ln_namelen = 0;
+ }
+
+ if (!rc)
+ *fid = *f;
+out:
+ RETURN(rc);
+}
+
+/** The maximum depth that fid2path() will search.
+ * This is limited only because we want to store the fids for
+ * historical path lookup purposes.
+ */
+#define MAX_PATH_DEPTH 100
+
+/** mdd_path() lookup structure. */
+struct path_lookup_info {
+ __u64 pli_recno; /**< history point */
+ struct lu_fid pli_fid;
+ struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
+ struct mdd_object *pli_mdd_obj;
+ char *pli_path; /**< full path */
+ int pli_pathlen;
+ int pli_linkno; /**< which hardlink to follow */
+ int pli_fidcount; /**< number of \a pli_fids */
+};
+
+static int mdd_path_current(const struct lu_env *env,
+ struct path_lookup_info *pli)
+{
+ struct mdd_device *mdd = mdo2mdd(&pli->pli_mdd_obj->mod_obj);
+ struct mdd_object *mdd_obj;
+ struct lu_buf *buf = NULL;
+ struct link_ea_header *leh;
+ struct link_ea_entry *lee;
+ struct lu_name *tmpname = &mdd_env_info(env)->mti_name;
+ struct lu_fid *tmpfid = &mdd_env_info(env)->mti_fid;
+ char *ptr;
+ int reclen;
+ int rc;
+ ENTRY;
+
+ ptr = pli->pli_path + pli->pli_pathlen - 1;
+ *ptr = 0;
+ --ptr;
+ pli->pli_fidcount = 0;
+ pli->pli_fids[0] = *(struct lu_fid *)mdd_object_fid(pli->pli_mdd_obj);
+
+ while (!mdd_is_root(mdd, &pli->pli_fids[pli->pli_fidcount])) {
+ mdd_obj = mdd_object_find(env, mdd,
+ &pli->pli_fids[pli->pli_fidcount]);
+ if (mdd_obj == NULL)
+ GOTO(out, rc = -EREMOTE);
+ if (IS_ERR(mdd_obj))
+ GOTO(out, rc = -PTR_ERR(mdd_obj));
+ rc = lu_object_exists(&mdd_obj->mod_obj.mo_lu);
+ if (rc <= 0) {
+ mdd_object_put(env, mdd_obj);
+ if (rc == -1)
+ rc = -EREMOTE;
+ else if (rc == 0)
+ /* Do I need to error out here? */
+ rc = -ENOENT;
+ GOTO(out, rc);
+ }
+
+ /* Get parent fid and object name */
+ mdd_read_lock(env, mdd_obj, MOR_TGT_CHILD);
+ buf = mdd_links_get(env, mdd_obj);
+ mdd_read_unlock(env, mdd_obj);
+ mdd_object_put(env, mdd_obj);
+ if (IS_ERR(buf))
+ GOTO(out, rc = PTR_ERR(buf));
+
+ leh = buf->lb_buf;
+ lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
+ mdd_lee_unpack(lee, &reclen, tmpname, tmpfid);
+
+ /* If set, use link #linkno for path lookup, otherwise use
+ link #0. Only do this for the final path element. */
+ if ((pli->pli_fidcount == 0) &&
+ (pli->pli_linkno < leh->leh_reccount)) {
+ int count;
+ for (count = 0; count < pli->pli_linkno; count++) {
+ lee = (struct link_ea_entry *)
+ ((char *)lee + reclen);
+ mdd_lee_unpack(lee, &reclen, tmpname, tmpfid);
+ }
+ if (pli->pli_linkno < leh->leh_reccount - 1)
+ /* indicate to user there are more links */
+ pli->pli_linkno++;
+ }
+
+ /* Pack the name in the end of the buffer */
+ ptr -= tmpname->ln_namelen;
+ if (ptr - 1 <= pli->pli_path)
+ GOTO(out, rc = -EOVERFLOW);
+ strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
+ *(--ptr) = '/';
+
+ /* Store the parent fid for historic lookup */
+ if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
+ GOTO(out, rc = -EOVERFLOW);
+ pli->pli_fids[pli->pli_fidcount] = *tmpfid;
+ }
+
+ /* Verify that our path hasn't changed since we started the lookup */
+ rc = mdd_path2fid(env, mdd, ptr, &pli->pli_fid);
+ if (rc) {
+ CDEBUG(D_INFO, "mdd_path2fid(%s) failed %d\n", ptr, rc);
+ GOTO (out, rc = -EAGAIN);
+ }
+ if (!lu_fid_eq(&pli->pli_fids[0], &pli->pli_fid)) {
+ CDEBUG(D_INFO, "mdd_path2fid(%s) found another FID o="DFID
+ " n="DFID"\n", ptr, PFID(&pli->pli_fids[0]),
+ PFID(&pli->pli_fid));
+ GOTO(out, rc = -EAGAIN);
+ }
+
+ memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
+
+ EXIT;
+out:
+ if (buf && !IS_ERR(buf) && buf->lb_vmalloc)
+ /* if we vmalloced a large buffer drop it */
+ mdd_buf_put(buf);
+
+ return rc;
+}
+
+/* Returns the full path to this fid, as of changelog record recno. */
+static int mdd_path(const struct lu_env *env, struct md_object *obj,
+ char *path, int pathlen, __u64 recno, int *linkno)
+{
+ struct path_lookup_info *pli;
+ int tries = 3;
+ int rc = -EAGAIN;
+ ENTRY;
+
+ if (pathlen < 3)
+ RETURN(-EOVERFLOW);
+
+ if (mdd_is_root(mdo2mdd(obj), mdd_object_fid(md2mdd_obj(obj)))) {
+ path[0] = '/';
+ path[1] = '\0';
+ RETURN(0);
+ }
+
+ OBD_ALLOC_PTR(pli);
+ if (pli == NULL)
+ RETURN(-ENOMEM);
+
+ pli->pli_mdd_obj = md2mdd_obj(obj);
+ pli->pli_recno = recno;
+ pli->pli_path = path;
+ pli->pli_pathlen = pathlen;
+ pli->pli_linkno = *linkno;
+
+ /* Retry multiple times in case file is being moved */
+ while (tries-- && rc == -EAGAIN)
+ rc = mdd_path_current(env, pli);
+
+#if 0 /* We need old path names only for replication */
+ /* For historical path lookup, the current links may not have existed
+ * at "recno" time. We must switch over to earlier links/parents
+ * by using the changelog records. If the earlier parent doesn't
+ * exist, we must search back through the changelog to reconstruct
+ * its parents, then check if it exists, etc.
+ * We may ignore this problem for the initial implementation and
+ * state that an "original" hardlink must still exist for us to find
+ * historic path name. */
+ if (pli->pli_recno != -1)
+ rc = mdd_path_historic(env, pli);
+#endif
+
+ /* return next link index to caller */
+ *linkno = pli->pli_linkno;
+
+ OBD_FREE_PTR(pli);
+
+ RETURN (rc);
+}
+
int mdd_get_flags(const struct lu_env *env, struct mdd_object *obj)
{
struct lu_attr *la = &mdd_env_info(env)->mti_la;
RETURN(0);
rc = mdd_get_md(env, mdd_obj, ma->ma_lmm, &ma->ma_lmm_size,
- MDS_LOV_MD_NAME);
+ XATTR_NAME_LOV);
if (rc == 0 && (ma->ma_need & MA_LOV_DEF)) {
rc = mdd_get_default_md(mdd_obj, ma->ma_lmm,
RETURN(0);
rc = mdd_get_md(env, mdd_obj, ma->ma_lmv, &ma->ma_lmv_size,
- MDS_LMV_MD_NAME);
+ XATTR_NAME_LMV);
if (rc > 0) {
ma->ma_valid |= MA_LMV;
rc = 0;
RETURN(rc);
}
-static int __mdd_xattr_set(const struct lu_env *env, struct mdd_object *obj,
- const struct lu_buf *buf, const char *name,
- int fl, struct thandle *handle)
+int __mdd_xattr_set(const struct lu_env *env, struct mdd_object *obj,
+ const struct lu_buf *buf, const char *name,
+ int fl, struct thandle *handle)
{
struct lustre_capa *capa = mdd_object_capa(env, obj);
int rc = -EINVAL;
RETURN(0);
}
+/** Store a data change changelog record
+ * If this fails, we must fail the whole transaction; we don't
+ * want the change to commit without the log entry.
+ * \param mdd_obj - mdd_object of change
+ * \param handle - transacion handle
+ */
+static int mdd_changelog_data_store(const struct lu_env *env,
+ struct mdd_device *mdd,
+ enum changelog_rec_type type,
+ struct mdd_object *mdd_obj,
+ struct thandle *handle)
+{
+ const struct lu_fid *tfid = mdo2fid(mdd_obj);
+ struct llog_changelog_rec *rec;
+ struct lu_buf *buf;
+ int reclen;
+ int rc;
+
+ if (!(mdd->mdd_cl.mc_flags & CLM_ON))
+ RETURN(0);
+
+ LASSERT(handle != NULL);
+ LASSERT(mdd_obj != NULL);
+
+ if ((type == CL_SETATTR) &&
+ cfs_time_before_64(mdd->mdd_cl.mc_starttime, mdd_obj->mod_cltime)) {
+ /* Don't need multiple updates in this log */
+ /* Don't check under lock - no big deal if we get an extra
+ entry */
+ RETURN(0);
+ }
+
+ reclen = llog_data_len(sizeof(*rec));
+ buf = mdd_buf_alloc(env, reclen);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ rec = (struct llog_changelog_rec *)buf->lb_buf;
+
+ rec->cr_flags = CLF_VERSION;
+ rec->cr_type = (__u32)type;
+ rec->cr_tfid = *tfid;
+ rec->cr_namelen = 0;
+ mdd_obj->mod_cltime = cfs_time_current_64();
+
+ rc = mdd_changelog_llog_write(mdd, rec, handle);
+ if (rc < 0) {
+ CERROR("changelog failed: rc=%d op%d t"DFID"\n",
+ rc, type, PFID(tfid));
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
/* set attr and LOV EA at once, return updated attr */
static int mdd_attr_set(const struct lu_env *env, struct md_object *obj,
const struct md_attr *ma)
GOTO(cleanup, rc = -ENOMEM);
rc = mdd_get_md_locked(env, mdd_obj, lmm, &lmm_size,
- MDS_LOV_MD_NAME);
+ XATTR_NAME_LOV);
if (rc < 0)
GOTO(cleanup, rc);
}
- if (ma->ma_attr.la_valid & (ATTR_MTIME | ATTR_CTIME))
+ if (ma->ma_attr.la_valid & (LA_MTIME | LA_CTIME))
CDEBUG(D_INODE, "setting mtime "LPU64", ctime "LPU64"\n",
ma->ma_attr.la_mtime, ma->ma_attr.la_ctime);
/* get file quota for new owner */
lquota_chkquota(mds_quota_interface_ref, obd,
qnids[USRQUOTA], qnids[GRPQUOTA], 1,
- &inode_pending, NULL, 0);
+ &inode_pending, NULL, 0, NULL, 0);
block_count = (la_tmp->la_blocks + 7) >> 3;
- if (block_count)
+ if (block_count) {
+ void *data = NULL;
+ mdd_data_get(env, mdd_obj, &data);
/* get block quota for new owner */
lquota_chkquota(mds_quota_interface_ref, obd,
qnids[USRQUOTA],
qnids[GRPQUOTA],
block_count, &block_pending,
- NULL, LQUOTA_FLAGS_BLK);
+ NULL, LQUOTA_FLAGS_BLK,
+ data, 1);
+ }
}
}
#endif
}
cleanup:
+ if ((rc == 0) && (ma->ma_attr.la_valid & (LA_MTIME | LA_CTIME)))
+ rc = mdd_changelog_data_store(env, mdd, CL_SETATTR, mdd_obj,
+ handle);
mdd_trans_stop(env, mdd, rc, handle);
if (rc == 0 && (lmm != NULL && lmm_size > 0 )) {
/*set obd attr, if needed*/
if (inode_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qnids[USRQUOTA], qnids[GRPQUOTA],
- 1, 0);
+ inode_pending, 0);
if (block_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qnids[USRQUOTA], qnids[GRPQUOTA],
- block_count, 1);
+ block_pending, 1);
/* Trigger dqrel/dqacq for original owner and new owner.
* If failed, the next call for lquota_chkquota will
* process it. */
RETURN(PTR_ERR(handle));
rc = mdd_xattr_set_txn(env, mdd_obj, buf, name, fl, handle);
+
+ /* Only record user xattr changes */
+ if ((rc == 0) && (mdd->mdd_cl.mc_flags & CLM_ON) &&
+ (strncmp("user.", name, 5) == 0))
+ rc = mdd_changelog_data_store(env, mdd, CL_XATTR, mdd_obj,
+ handle);
mdd_trans_stop(env, mdd, rc, handle);
RETURN(rc);
rc = mdo_xattr_del(env, mdd_obj, name, handle,
mdd_object_capa(env, mdd_obj));
mdd_write_unlock(env, mdd_obj);
+
+ /* Only record user xattr changes */
+ if ((rc == 0) && (mdd->mdd_cl.mc_flags & CLM_ON) &&
+ (strncmp("user.", name, 5) != 0))
+ rc = mdd_changelog_data_store(env, mdd, CL_XATTR, mdd_obj,
+ handle);
+
mdd_trans_stop(env, mdd, rc, handle);
RETURN(rc);
mdd_quota_wrapper(&ma->ma_attr, qids);
/* get file quota for child */
lquota_chkquota(mds_quota_interface_ref, obd, qids[USRQUOTA],
- qids[GRPQUOTA], 1, &inode_pending, NULL, 0);
+ qids[GRPQUOTA], 1, &inode_pending, NULL, 0,
+ NULL, 0);
switch (ma->ma_attr.la_mode & S_IFMT) {
case S_IFLNK:
case S_IFDIR:
lquota_chkquota(mds_quota_interface_ref, obd,
qids[USRQUOTA], qids[GRPQUOTA],
block_count, &block_pending, NULL,
- LQUOTA_FLAGS_BLK);
+ LQUOTA_FLAGS_BLK, NULL, 0);
}
#endif
rc = __mdd_xattr_set(env, mdd_obj,
mdd_buf_get_const(env, lmv, lmv_size),
- MDS_LMV_MD_NAME, 0, handle);
+ XATTR_NAME_LMV, 0, handle);
if (rc)
GOTO(unlock, rc);
pfid = spec->u.sp_ea.fid;
}
#endif
- rc = mdd_object_initialize(env, pfid, mdd_obj, ma, handle, spec);
+ rc = mdd_object_initialize(env, pfid, NULL, mdd_obj, ma, handle,
+ spec);
}
EXIT;
unlock:
if (inode_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qids[USRQUOTA], qids[GRPQUOTA],
- 1, 0);
+ inode_pending, 0);
if (block_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qids[USRQUOTA], qids[GRPQUOTA],
- block_count, 1);
+ block_pending, 1);
/* Trigger dqacq on the owner of child. If failed,
* the next call for lquota_chkquota will process it. */
lquota_adjust(mds_quota_interface_ref, obd, qids, 0, rc,
.moo_readlink = mdd_readlink,
.moo_capa_get = mdd_capa_get,
.moo_object_sync = mdd_object_sync,
+ .moo_path = mdd_path,
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff