/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
+ * lustre/smfs/kml.c
+ * Lustre filesystem abstraction routines
+ *
* Copyright (C) 2004 Cluster File Systems, Inc.
*
* This file is part of Lustre, http://www.lustre.org.
* You should have received a copy of the GNU General Public License
* along with Lustre; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
*/
+#ifndef EXPORT_SYMTAB
+# define EXPORT_SYMTAB
+#endif
#define DEBUG_SUBSYSTEM S_SM
#include <linux/lustre_smfs.h>
#include "smfs_internal.h"
-/*FIXME there should be more conditions in this check*/
-int smfs_do_rec(struct inode *inode)
+#define KML_BUF_REC_INIT(buffer, pbuf, len) \
+do { \
+ pbuf = buffer + sizeof(int); \
+ len -= sizeof(int); \
+} while (0)
+
+#define KML_BUF_REC_END(buffer, length, pbuf) \
+do { \
+ int len = length; \
+ memcpy(buffer, &len, sizeof(len)); \
+ length += sizeof(int); \
+ pbuf = buffer + length; \
+} while (0)
+
+
+static int smfs_llog_process_rec_cb(struct llog_handle *handle,
+ struct llog_rec_hdr *rec, void *data)
{
- struct super_block *sb = inode->i_sb;
- struct smfs_super_info *smfs_info = S2SMI(sb);
+ char *rec_buf ;
+ struct smfs_proc_args *args = (struct smfs_proc_args *)data;
+ struct lvfs_run_ctxt saved;
+ int rc = 0;
- if (SMFS_DO_REC(smfs_info) && SMFS_INIT_REC(smfs_info) &&
- SMFS_DO_INODE_REC(inode))
- return 1;
- return 0;
-}
+ if (!(le32_to_cpu(handle->lgh_hdr->llh_flags) & LLOG_F_IS_PLAIN)) {
+ CERROR("log is not plain\n");
+ RETURN(-EINVAL);
+ }
-int smfs_rec_init(struct super_block *sb)
-{
- struct smfs_super_info *smfs_info = S2SMI(sb);
- int rc = 0;
+ if (le32_to_cpu(rec->lrh_type) == LLOG_GEN_REC) {
+ struct llog_cookie cookie;
- SMFS_SET_REC(smfs_info);
+ cookie.lgc_lgl = handle->lgh_id;
+ cookie.lgc_index = le32_to_cpu(rec->lrh_index);
- RETURN(rc);
-}
+ llog_cancel(handle->lgh_ctxt, 1, &cookie, 0, NULL);
+ RETURN(LLOG_PROC_BREAK);
+ }
-int smfs_rec_cleanup(struct super_block *sb)
-{
- int rc = 0;
+ if (le32_to_cpu(rec->lrh_type) != SMFS_UPDATE_REC)
+ RETURN(-EINVAL);
+
+ rec_buf = (char*) (rec + 1);
- SMFS_CLEAN_REC(S2SMI(sb));
+ if (!S2SMI(args->sr_sb)->smsi_ctxt)
+ GOTO(exit, rc = -ENODEV);
+
+ push_ctxt(&saved, S2SMI(args->sr_sb)->smsi_ctxt, NULL);
+#if 0
+ /*FIXME later should first unpack the rec,
+ * then call lvfs_reint or lvfs_undo
+ * kml rec format has changed lvfs_reint lvfs_undo should
+ * be rewrite FIXME later*/
+ if (SMFS_DO_REINT_REC(args->sr_flags))
+ rc = lvfs_reint(args->sr_sb, rec_buf);
+ else
+ rc = lvfs_undo(args->sr_sb, rec_buf);
+#endif
+ if (!rc && !SMFS_DO_REC_ALL(args->sr_flags)) {
+ args->sr_count --;
+ if (args->sr_count == 0)
+ rc = LLOG_PROC_BREAK;
+ }
+ pop_ctxt(&saved, S2SMI(args->sr_sb)->smsi_ctxt, NULL);
+exit:
RETURN(rc);
}
-void reint_rec_free(struct reint_record *reint_rec)
+static smfs_pack_rec_func smfs_get_rec_pack_type(struct super_block *sb)
{
- if (reint_rec) {
- if (reint_rec->rec_data1)
- OBD_FREE(reint_rec->rec_data1,
- reint_rec->rec1_size + 1);
- if (reint_rec->rec_data2)
- OBD_FREE(reint_rec->rec_data2,
- reint_rec->rec2_size + 1);
+ int idx = 0;
+ struct smfs_super_info *smsi = S2SMI(sb);
- OBD_FREE(reint_rec, sizeof(struct reint_record));
- }
+ idx = GET_REC_PACK_TYPE_INDEX(smsi->smsi_flags);
+ return smsi->smsi_pack_rec[idx];
}
-static inline void copy_inode_attr(struct iattr *iattr, struct inode *inode)
+static inline void
+copy_inode_attr(struct iattr *iattr, struct inode *inode)
{
iattr->ia_mode = inode->i_mode;
iattr->ia_uid = inode->i_uid;
iattr->ia_size = inode->i_size;
}
-void smfs_rec_pack(struct update_record *rec, struct inode *dst,
- void *data, int op)
-{
- rec->ur_fsuid = current->fsuid;
- rec->ur_fsgid = current->fsgid;
- rec->ur_rdev = dst->i_rdev;
- rec->ur_opcode = op;
- copy_inode_attr(&rec->ur_iattr, dst);
- if (data) {
- switch (op) {
- case REINT_CREATE:
- case REINT_LINK:
- case REINT_UNLINK:
- case REINT_RENAME: {
- struct inode *dir = (struct inode *)data;
- copy_inode_attr(&rec->ur_pattr, dir);
- break;
- }
- case REINT_SETATTR: {
- struct iattr *attr = (struct iattr *)data;
- memcpy(&rec->ur_pattr, attr, sizeof(struct iattr));
- break;
- }
- }
- }
-}
-
-static inline void unpack_attr(struct reint_record *r_rec,
- struct update_record *u_rec)
-{
- memcpy(&r_rec->u_rec, u_rec, sizeof(struct update_record));
-}
-
static inline int unpack_rec_data(char **p_buffer, int *size,
char *in_data, char *args_data)
{
OBD_ALLOC(*p_buffer, *size + args_len + 1);
if (!*p_buffer)
RETURN(-ENOMEM);
- /*First copy reint dir */
+
+ /* first copy reint dir. */
if (args_data)
memcpy(*p_buffer, args_data, args_len);
- /*then copy the node name */
+ /* then copy the node name. */
memcpy(*p_buffer + args_len,
(in_data + sizeof(int)), *size);
RETURN(rc);
}
-int smfs_rec_unpack(struct smfs_proc_args *args, struct reint_record *r_rec,
- char *rec_buf)
+int smfs_rec_unpack(struct smfs_proc_args *args, char *record,
+ char **pbuf, int *opcode)
{
- struct update_record *u_rec = (struct update_record *)rec_buf;
- int rc = 0, length = 0;
- ENTRY;
- /*FIXME wangdi, there unpack are so smiliar that
- *we will put it together later*/
-
- if (SMFS_DO_WRITE_KML(args->sr_flags))
- SET_REC_WRITE_KML_FLAGS(r_rec->u_rec.ur_flags, SMFS_WRITE_KML);
- unpack_attr(r_rec, u_rec);
- length += sizeof(struct update_record);
- rc = unpack_rec_data(&r_rec->rec_data1, &r_rec->rec1_size,
- (rec_buf + length), args->sr_data);
- switch (u_rec->ur_opcode) {
- case REINT_OPEN:
- case REINT_CLOSE:
- /*record src path which will be passed to reint and undo*/
- rc = unpack_rec_data(&r_rec->rec_data2, &r_rec->rec2_size,
- (rec_buf + length), NULL);
- break;
- case REINT_LINK:
- case REINT_RENAME:
- case REINT_SETATTR:
- case REINT_UNLINK:
- case REINT_CREATE:
- case REINT_WRITE: {
- length += rc;
- if (length < u_rec->ur_len) {
- char *pre_name;
- if (u_rec->ur_opcode == REINT_CREATE ||
- u_rec->ur_opcode == REINT_WRITE ||
- (u_rec->ur_opcode == REINT_UNLINK &&
- SMFS_DO_DEC_LINK(r_rec->u_rec.ur_flags)))
- pre_name = NULL;
- else
- pre_name = args->sr_data;
+ int offset = *(int *)(record);
+ char *tmp = record + offset + sizeof(int);
- rc = unpack_rec_data(&r_rec->rec_data2,
- &r_rec->rec2_size,
- (rec_buf + length), pre_name);
- }
- break;
- }
- }
- if (rc > 0)
- rc = 0;
-
- RETURN(rc);
+ *opcode = *(int *)tmp;
+ *pbuf = tmp + sizeof(*opcode);
+ return 0;
}
+EXPORT_SYMBOL(smfs_rec_unpack);
-int smfs_start_rec(struct super_block *sb)
+int smfs_write_extents(struct inode *dir, struct dentry *dentry,
+ unsigned long from, unsigned long num)
{
- struct dentry *dentry;
- struct lvfs_run_ctxt saved;
- int rc = 0;
- ENTRY;
-
- if (SMFS_INIT_REC(S2SMI(sb)) ||
- (!SMFS_DO_REC(S2SMI(sb)) && !SMFS_CACHE_HOOK(S2SMI(sb))))
- RETURN(rc);
-
- rc = smfs_llog_setup(sb);
- if (rc)
- RETURN(rc);
-
- push_ctxt(&saved, S2SMI(sb)->smsi_ctxt, NULL);
- dentry = simple_mkdir(current->fs->pwd, "DELETE", 0777, 1);
- if (IS_ERR(dentry)) {
- rc = PTR_ERR(dentry);
- CERROR("cannot create LOGS directory: rc = %d\n", rc);
- GOTO(err_exit, rc = -EINVAL);
- }
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- if (list_empty(&dentry->d_hash))
- d_rehash(dentry);
-#else
- /* FIXME-WANGDI: here should be be something. */
-#endif
+ return smfs_post_rec_write(dir, dentry, &from, &num);
+}
+EXPORT_SYMBOL(smfs_write_extents);
- if (!rc)
- SMFS_SET_INIT_REC(S2SMI(sb));
- S2SMI(sb)->smsi_delete_dir = dentry;
-exit:
- pop_ctxt(&saved, S2SMI(sb)->smsi_ctxt, NULL);
- RETURN(rc);
-err_exit:
- if (S2SMI(sb)->smsi_ctxt)
- OBD_FREE(S2SMI(sb)->smsi_ctxt, sizeof(struct lvfs_run_ctxt));
- goto exit;
+int smfs_rec_setattr(struct inode *dir, struct dentry *dentry,
+ struct iattr *attr)
+{
+ return smfs_post_rec_setattr(dir, dentry, attr, NULL);
}
+EXPORT_SYMBOL(smfs_rec_setattr);
-int smfs_stop_rec(struct super_block *sb)
+int smfs_rec_md(struct inode *inode, void *lmm, int lmm_size)
{
- int rc = 0;
+ char *set_lmm = NULL;
+ int rc = 0;
ENTRY;
- if (!SMFS_INIT_REC(S2SMI(sb)) ||
- (!SMFS_DO_REC(S2SMI(sb)) && !SMFS_CACHE_HOOK(S2SMI(sb))))
- RETURN(rc);
-
- rc = smfs_llog_cleanup(sb);
-
- SMFS_CLEAN_INIT_REC(S2SMI(sb));
-
- if (S2SMI(sb)->smsi_delete_dir) {
- l_dput(S2SMI(sb)->smsi_delete_dir);
- S2SMI(sb)->smsi_delete_dir = NULL;
+ if (!SMFS_DO_REC(S2SMI(inode->i_sb)))
+ RETURN(0);
+
+ if (lmm) {
+ OBD_ALLOC(set_lmm, lmm_size + sizeof(lmm_size));
+ if (!set_lmm)
+ RETURN(-ENOMEM);
+ memcpy(set_lmm, &lmm_size, sizeof(lmm_size));
+ memcpy(set_lmm + sizeof(lmm_size), lmm, lmm_size);
+ rc = smfs_post_rec_setattr(inode, NULL, NULL, set_lmm);
+ if (rc) {
+ CERROR("Error: Record md for inode %lu rc=%d\n",
+ inode->i_ino, rc);
+ }
}
+ if (set_lmm)
+ OBD_FREE(set_lmm, lmm_size + sizeof(lmm_size));
RETURN(rc);
}
+EXPORT_SYMBOL(smfs_rec_md);
+
+int smfs_rec_precreate(struct dentry *dentry, int *num, struct obdo *oa)
+{
+ return smfs_post_rec_create(dentry->d_inode, dentry, num, oa);
+}
+EXPORT_SYMBOL(smfs_rec_precreate);
-int smfs_process_rec(struct super_block *sb, int count, char *dir, int flags)
+int smfs_process_rec(struct super_block *sb,
+ int count, char *dir, int flags)
{
struct llog_ctxt *ctxt;
struct llog_handle *loghandle;
args.sr_count = count;
args.sr_data = dir;
args.sr_flags = flags ;
- ctxt = S2SMI(sb)->smsi_rec_log;
+ ctxt = S2SMI(sb)->smsi_kml_log;
loghandle = ctxt->loc_handle;
if (count == 0) {
if (SMFS_DO_REINT_REC(flags)) {
struct llog_gen_rec *lgr;
- /*For reint rec, we need insert
- *a gen rec to identify the end
- *of the rec.*/
+ /* for reint rec, we need insert a gen rec to identify
+ * the end of the rec.*/
OBD_ALLOC(lgr, sizeof(*lgr));
if (!lgr)
RETURN(-ENOMEM);
- lgr->lgr_hdr.lrh_len = lgr->lgr_tail.lrt_len =
- sizeof(*lgr);
+ lgr->lgr_hdr.lrh_len = lgr->lgr_tail.lrt_len = sizeof(*lgr);
lgr->lgr_hdr.lrh_type = LLOG_GEN_REC;
lgr->lgr_gen = ctxt->loc_gen;
- rc = llog_add(ctxt, &lgr->lgr_hdr, NULL, NULL, 1, NULL);
+ rc = llog_add(ctxt, &lgr->lgr_hdr, NULL, NULL, 1,
+ NULL, NULL, NULL);
OBD_FREE(lgr, sizeof(*lgr));
if (rc != 1)
RETURN(rc);
}
if (loghandle) {
if (SMFS_DO_REINT_REC(flags))
- rc = llog_cat_process(loghandle, ctxt->loc_proc_cb,
+ rc = llog_cat_process(loghandle, ctxt->llog_proc_cb,
(void *)&args);
else
rc = llog_cat_reverse_process(loghandle,
- ctxt->loc_proc_cb,
+ ctxt->llog_proc_cb,
(void *)&args);
if (rc == LLOG_PROC_BREAK)
rc = 0;
}
RETURN(rc);
}
+
+/*smfs_path is gotten from intermezzo*/
+static char* smfs_path(struct dentry *dentry, struct dentry *root, char *buffer,
+ int buflen)
+{
+ char * end = buffer + buflen;
+ char * name = buffer;
+ char * buf_end = buffer + buflen;
+ char * retval;
+
+ *--end = '\0';
+ buflen--;
+ /* Get '/' right */
+ retval = end-1;
+ *retval = '/';
+
+ for (;;) {
+ struct dentry * parent;
+ int namelen;
+
+ if (dentry == root)
+ break;
+ parent = dentry->d_parent;
+ if (dentry == parent)
+ break;
+ namelen = dentry->d_name.len;
+ buflen -= namelen + 1;
+ if (buflen < 0)
+ break;
+ end -= namelen;
+ memcpy(end, dentry->d_name.name, namelen);
+ *--end = '/';
+ retval = end;
+ dentry = parent;
+ }
+
+ while (end != buf_end)
+ *name++ = *end++;
+ *name = '\0';
+ return retval;
+}
+
+static int smfs_log_path(struct super_block *sb,
+ struct dentry *dentry,
+ char *buffer,
+ int buffer_len)
+{
+ struct dentry *root=sb->s_root;
+ char *p_name = buffer + sizeof(int);
+ char *name = NULL;
+ int namelen = 0;
+ ENTRY;
+
+ if (dentry) {
+ name = smfs_path(dentry, root, p_name, buffer_len - sizeof(int));
+ namelen = cpu_to_le32(strlen(p_name));
+ memcpy(buffer, &namelen, sizeof(int));
+ }
+ namelen += sizeof(int);
+ RETURN(namelen);
+}
+
+static inline int log_it(char *buffer, void *data, int length)
+{
+ memcpy(buffer, &length, sizeof(int));
+ memcpy(buffer + sizeof(int), data, length);
+ return (sizeof(int) + length);
+}
+
+static int smfs_pack_rec (char *buffer, struct dentry *dentry,
+ struct inode *dir, void *data1,
+ void *data2, int op)
+{
+ smfs_pack_rec_func pack_func;
+
+ pack_func = smfs_get_rec_pack_type(dir->i_sb);
+ if (!pack_func)
+ return 0;
+ return pack_func(buffer, dentry, dir, data1, data2, op);
+}
+
+int smfs_post_rec_create(struct inode *dir, struct dentry *dentry,
+ void *data1, void *data2)
+{
+ struct smfs_super_info *sinfo;
+ char *buffer = NULL, *pbuf;
+ int rc = 0, length = 0, buf_len = 0;
+ ENTRY;
+
+ sinfo = S2SMI(dentry->d_inode->i_sb);
+ if (!sinfo)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC(buffer, PAGE_SIZE);
+ if (!buffer)
+ GOTO(exit, rc = -ENOMEM);
+
+ buf_len = PAGE_SIZE;
+ KML_BUF_REC_INIT(buffer, pbuf, buf_len);
+ rc = smfs_log_path(dir->i_sb, dentry, pbuf, buf_len);
+ if (rc < 0)
+ GOTO(exit, rc);
+ length = rc;
+ KML_BUF_REC_END(buffer, length, pbuf);
+
+ rc = smfs_pack_rec(pbuf, dentry, dir,
+ data1, data2, REINT_CREATE);
+ if (rc <= 0)
+ GOTO(exit, rc);
+ else
+ length += rc;
+ rc = smfs_llog_add_rec(sinfo, (void*)buffer, length);
+exit:
+ if (buffer)
+ OBD_FREE(buffer, PAGE_SIZE);
+
+ RETURN(rc);
+}
+
+static int smfs_post_rec_link(struct inode *dir, struct dentry *dentry,
+ void *data1, void *data2)
+{
+ struct dentry *new_dentry = (struct dentry *)data1;
+ int rc = 0, length = 0, buf_len = 0;
+ char *buffer = NULL, *pbuf = NULL;
+ struct smfs_super_info *sinfo;
+ ENTRY;
+
+ sinfo = S2SMI(dir->i_sb);
+ if (!sinfo)
+ RETURN(-EINVAL);
+ OBD_ALLOC(buffer, PAGE_SIZE);
+ if (!buffer)
+ GOTO(exit, rc = -ENOMEM);
+
+ buf_len = PAGE_SIZE;
+ KML_BUF_REC_INIT(buffer, pbuf, buf_len);
+
+ rc = smfs_log_path(dir->i_sb, dentry, pbuf, buf_len);
+ if (rc < 0)
+ GOTO(exit, rc);
+
+ length = rc;
+ KML_BUF_REC_END(buffer, length, pbuf);
+
+ rc = smfs_pack_rec(pbuf, dentry, dir, dentry,
+ new_dentry, REINT_LINK);
+ if (rc <= 0)
+ GOTO(exit, rc);
+
+ length += rc;
+ rc = smfs_llog_add_rec(sinfo, (void *)buffer, length);
+exit:
+ if (buffer)
+ OBD_FREE(buffer, PAGE_SIZE);
+
+ RETURN(rc);
+}
+
+static int smfs_post_rec_unlink(struct inode *dir, struct dentry *dentry,
+ void *data1, void *data2)
+{
+ struct smfs_super_info *sinfo;
+ int mode = *((int*)data1);
+ char *buffer = NULL, *pbuf = NULL;
+ int length = 0, rc = 0, buf_len = 0;
+ ENTRY;
+
+ sinfo = S2SMI(dentry->d_inode->i_sb);
+ if (!sinfo)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC(buffer, PAGE_SIZE);
+ if (!buffer)
+ GOTO(exit, rc = -ENOMEM);
+
+ buf_len = PAGE_SIZE;
+ KML_BUF_REC_INIT(buffer, pbuf, buf_len);
+ rc = smfs_log_path(dir->i_sb, dentry, pbuf, buf_len);
+ if (rc < 0)
+ GOTO(exit, rc);
+
+ length = rc;
+ KML_BUF_REC_END(buffer, length, pbuf);
+ rc = smfs_pack_rec(pbuf, dentry, dir,
+ &mode, NULL, REINT_UNLINK);
+ if (rc <= 0)
+ GOTO(exit, rc);
+ else
+ length += rc;
+
+ rc = smfs_llog_add_rec(sinfo, (void*)buffer, length);
+exit:
+ if (buffer)
+ OBD_FREE(buffer, PAGE_SIZE);
+
+ RETURN(rc);
+}
+
+static int smfs_post_rec_rename(struct inode *dir, struct dentry *dentry,
+ void *data1, void *data2)
+{
+ struct smfs_super_info *sinfo;
+ struct inode *new_dir = (struct inode *)data1;
+ struct dentry *new_dentry = (struct dentry *)data2;
+ char *buffer = NULL, *pbuf = NULL;
+ int rc = 0, length = 0, buf_len = 0;
+ ENTRY;
+
+ sinfo = S2SMI(dir->i_sb);
+ if (!sinfo)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC(buffer, PAGE_SIZE);
+ if (!buffer)
+ GOTO(exit, rc = -ENOMEM);
+
+ buf_len = PAGE_SIZE;
+ KML_BUF_REC_INIT(buffer, pbuf, buf_len);
+ rc = smfs_log_path(dir->i_sb, dentry, pbuf, buf_len);
+ if (rc < 0)
+ GOTO(exit, rc);
+
+ pbuf += rc;
+ length += rc;
+ buf_len -= rc;
+
+ /* record new_dentry path. */
+ rc = smfs_log_path(dir->i_sb, new_dentry, pbuf, buf_len);
+ if (rc < 0)
+ GOTO(exit, rc);
+
+ length += rc;
+ KML_BUF_REC_END(buffer, length, pbuf);
+
+ rc = smfs_pack_rec(pbuf, dentry, dir,
+ new_dir, new_dentry, REINT_RENAME);
+ if (rc <= 0)
+ GOTO(exit, rc);
+ length += rc;
+
+ rc = smfs_llog_add_rec(sinfo, (void*)buffer, length);
+exit:
+ if (buffer)
+ OBD_FREE(buffer, PAGE_SIZE);
+ RETURN(rc);
+}
+
+static int smfs_insert_extents_ea(struct inode *inode, size_t from, loff_t num)
+{
+ struct fsfilt_operations *fsfilt = S2SMI(inode->i_sb)->sm_fsfilt;
+ int rc = 0;
+ ENTRY;
+
+ if (SMFS_INODE_OVER_WRITE(inode))
+ RETURN(rc);
+
+ rc = fsfilt->fs_insert_extents_ea(inode, OFF2BLKS(from, inode),
+ SIZE2BLKS(num, inode));
+ RETURN(rc);
+}
+
+static int smfs_remove_extents_ea(struct inode *inode, size_t from, loff_t num)
+{
+ struct fsfilt_operations *fsfilt = S2SMI(inode->i_sb)->sm_fsfilt;
+ int rc = 0;
+ ENTRY;
+
+ rc = fsfilt->fs_remove_extents_ea(inode, OFF2BLKS(from, inode),
+ SIZE2BLKS(num, inode));
+
+ RETURN(rc);
+}
+
+static int smfs_remove_all_extents_ea(struct inode *inode)
+{
+ struct fsfilt_operations *fsfilt = S2SMI(inode->i_sb)->sm_fsfilt;
+ int rc = 0;
+ ENTRY;
+
+ rc = fsfilt->fs_remove_extents_ea(inode, 0, 0xffffffff);
+ RETURN(rc);
+}
+static int smfs_init_extents_ea(struct inode *inode)
+{
+ struct fsfilt_operations *fsfilt = S2SMI(inode->i_sb)->sm_fsfilt;
+ int rc = 0;
+ ENTRY;
+
+ rc = fsfilt->fs_init_extents_ea(inode);
+
+ RETURN(rc);
+}
+static int smfs_set_dirty_flags(struct inode *inode, int flags)
+{
+ struct fsfilt_operations *fsfilt = S2SMI(inode->i_sb)->sm_fsfilt;
+ void *handle;
+ int rc = 0;
+ ENTRY;
+
+ if (SMFS_INODE_OVER_WRITE(inode))
+ RETURN(rc);
+ /*FIXME later, the blocks needed in journal here will be recalculated*/
+ handle = smfs_trans_start(inode, FSFILT_OP_SETATTR, NULL);
+ if (IS_ERR(handle)) {
+ CERROR("smfs_set_dirty_flag:no space for transaction\n");
+ RETURN(-ENOSPC);
+ }
+ if ((!SMFS_INODE_DIRTY_WRITE(inode) && (!SMFS_INODE_OVER_WRITE(inode))) ||
+ ((flags == SMFS_OVER_WRITE) && (SMFS_INODE_DIRTY_WRITE(inode)))) {
+ rc = fsfilt->fs_set_xattr(inode, handle, REINT_EXTENTS_FLAGS,
+ &flags, sizeof(int));
+ if (rc)
+ GOTO(out, rc);
+ }
+ if (flags == SMFS_OVER_WRITE)
+ SMFS_SET_INODE_OVER_WRITE(inode);
+ else
+ SMFS_SET_INODE_DIRTY_WRITE(inode);
+out:
+ smfs_trans_commit(inode, handle, 0);
+ RETURN(rc);
+}
+
+int smfs_post_rec_setattr(struct inode *inode, struct dentry *dentry,
+ void *data1, void *data2)
+{
+ struct smfs_super_info *sinfo;
+ struct iattr *attr = (struct iattr *)data1;
+ char *buffer = NULL, *pbuf;
+ int rc = 0, length = 0, buf_len = 0;
+ ENTRY;
+
+ sinfo = S2SMI(inode->i_sb);
+ if (!sinfo)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC(buffer, PAGE_SIZE);
+ if (!buffer)
+ GOTO(exit, rc = -ENOMEM);
+
+ buf_len = PAGE_SIZE;
+ KML_BUF_REC_INIT(buffer, pbuf, buf_len);
+ rc = smfs_log_path(inode->i_sb, dentry, pbuf, buf_len);
+ if (rc < 0)
+ GOTO(exit, rc);
+
+ length = rc;
+ KML_BUF_REC_END(buffer, length, pbuf);
+
+ rc = smfs_pack_rec(pbuf, dentry, inode,
+ data1, data2, REINT_SETATTR);
+ if (rc <= 0)
+ GOTO(exit, rc);
+ else
+ length += rc;
+
+ rc = smfs_llog_add_rec(sinfo, (void*)buffer, length);
+ if (!rc) {
+ if (attr && attr->ia_valid & ATTR_SIZE) {
+ smfs_remove_extents_ea(inode, attr->ia_size,
+ 0xffffffff);
+ if (attr->ia_size == 0)
+ smfs_set_dirty_flags(inode, SMFS_OVER_WRITE);
+ else
+ smfs_set_dirty_flags(inode, SMFS_DIRTY_WRITE);
+ }
+ }
+exit:
+ if (buffer)
+ OBD_FREE(buffer, PAGE_SIZE);
+ RETURN(rc);
+}
+
+static int all_blocks_present_ea(struct inode *inode)
+{
+ int rc = 0;
+ ENTRY;
+ RETURN(rc);
+}
+
+int smfs_post_rec_write(struct inode *dir, struct dentry *dentry, void *data1,
+ void *data2)
+{
+ struct smfs_super_info *sinfo;
+ char *buffer = NULL, *pbuf;
+ int rc = 0, length = 0, buf_len = 0;
+ ENTRY;
+
+ if (!SMFS_INODE_OVER_WRITE(dentry->d_inode) &&
+ !SMFS_INODE_DIRTY_WRITE(dentry->d_inode)) {
+ sinfo = S2SMI(dentry->d_inode->i_sb);
+ if (!sinfo)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC(buffer, PAGE_SIZE);
+ if (!buffer)
+ GOTO(exit, rc = -ENOMEM);
+
+ buf_len = PAGE_SIZE;
+ KML_BUF_REC_INIT(buffer, pbuf, buf_len);
+ rc = smfs_log_path(dir->i_sb, dentry, pbuf, buf_len);
+
+ if (rc < 0)
+ GOTO(exit, rc);
+ pbuf += rc;
+ memcpy(buffer, &rc, sizeof(int));
+ length = rc + sizeof(int);
+
+ rc = smfs_pack_rec(pbuf, dentry, dir,
+ data1, data2, REINT_WRITE);
+ if (rc <= 0)
+ GOTO(exit, rc);
+ else
+ length += rc;
+
+ rc = smfs_llog_add_rec(sinfo, (void*)buffer, length);
+ if (rc)
+ GOTO(exit, rc);
+ rc = smfs_init_extents_ea(dentry->d_inode);
+ if (rc)
+ GOTO(exit, rc);
+ }
+ if (dentry->d_inode->i_size == 0) {
+ smfs_set_dirty_flags(dentry->d_inode, SMFS_OVER_WRITE);
+ } else {
+ /*insert extent EA*/
+ loff_t off = *((loff_t*)data1);
+ size_t count = *((size_t*)data2);
+
+ rc = smfs_insert_extents_ea(dentry->d_inode, off, count);
+ if (rc < 0)
+ GOTO(exit, rc);
+ if (all_blocks_present_ea(dentry->d_inode)){
+ smfs_set_dirty_flags(dentry->d_inode, SMFS_OVER_WRITE);
+ smfs_remove_all_extents_ea(dentry->d_inode);
+ } else {
+ smfs_set_dirty_flags(dentry->d_inode, SMFS_DIRTY_WRITE);
+ }
+ }
+exit:
+ if (buffer)
+ OBD_FREE(buffer, PAGE_SIZE);
+ RETURN(rc);
+}
+
+/* new plugin API */
+struct kml_priv {
+ struct dentry * kml_llog_dir;
+};
+
+static int kml_create(struct inode * inode, void *arg)
+{
+ struct hook_msg * msg = arg;
+ return smfs_post_rec_create(inode, msg->dentry, NULL, NULL);
+}
+
+static int kml_link(struct inode * inode, void *arg)
+{
+ struct hook_link_msg * msg = arg;
+ return smfs_post_rec_link(inode, msg->dentry, msg->new_dentry, NULL);
+}
+
+static int kml_unlink(struct inode * inode, void *arg)
+{
+ struct hook_unlink_msg * msg = arg;
+ return smfs_post_rec_unlink(inode, msg->dentry, &msg->mode, NULL);
+}
+
+static int kml_symlink(struct inode * inode, void *arg)
+{
+ struct hook_symlink_msg * msg = arg;
+ return smfs_post_rec_create(inode, msg->dentry, &msg->tgt_len,
+ msg->symname);
+}
+
+static int kml_rename(struct inode * inode, void *arg)
+{
+ struct hook_rename_msg * msg = arg;
+ return smfs_post_rec_rename(inode, msg->dentry, msg->new_dir,
+ msg->new_dentry);
+}
+
+static int kml_setattr(struct inode * inode, void *arg)
+{
+ struct hook_setattr_msg * msg = arg;
+ return smfs_post_rec_setattr(inode, msg->dentry, msg->attr, NULL);
+}
+
+static int kml_write(struct inode * inode, void *arg)
+{
+ struct hook_write_msg * msg = arg;
+ return smfs_post_rec_write(inode, msg->dentry, &msg->count, &msg->pos);
+}
+
+typedef int (*post_kml_op)(struct inode * inode, void *msg);
+static post_kml_op smfs_kml_post[HOOK_MAX] = {
+ [HOOK_CREATE] kml_create,
+ [HOOK_LOOKUP] NULL,
+ [HOOK_LINK] kml_link,
+ [HOOK_UNLINK] kml_unlink,
+ [HOOK_SYMLINK] kml_symlink,
+ [HOOK_MKDIR] kml_create,
+ [HOOK_RMDIR] kml_unlink,
+ [HOOK_MKNOD] kml_create,
+ [HOOK_RENAME] kml_rename,
+ [HOOK_SETATTR] kml_setattr,
+ [HOOK_WRITE] kml_write,
+ [HOOK_READDIR] NULL,
+};
+
+static int smfs_kml_post_op(int code, struct inode * inode,
+ void * msg, int ret, void * priv)
+{
+ int rc = 0;
+
+ ENTRY;
+ CDEBUG(D_INODE,"KML: inode %lu, code: %u\n", inode->i_ino, code);
+ //KML don't handle failed ops
+ if (ret)
+ RETURN(0);
+
+ if (smfs_kml_post[code]) {
+ rc = smfs_kml_post[code](inode, msg);
+ }
+
+ RETURN(rc);
+}
+
+/* Helpers */
+static int smfs_exit_kml(struct super_block *sb, void * arg, struct kml_priv * priv)
+{
+ ENTRY;
+
+ smfs_deregister_plugin(sb, SMFS_PLG_KML);
+
+ EXIT;
+ return 0;
+}
+
+static int smfs_trans_kml (struct super_block *sb, void *arg,
+ struct kml_priv * priv)
+{
+ int size;
+
+ ENTRY;
+
+ size = 20;//LDISKFS_INDEX_EXTRA_TRANS_BLOCKS+LDISKFS_DATA_TRANS_BLOCKS;
+
+ RETURN(size);
+}
+
+static int smfs_start_kml(struct super_block *sb, void *arg,
+ struct kml_priv * kml_p)
+{
+ int rc = 0;
+ struct smfs_super_info * smb = S2SMI(sb);
+ struct llog_ctxt **ctxt = &smb->smsi_kml_log;
+
+ ENTRY;
+ //is plugin already activated
+ if (SMFS_IS(smb->plg_flags, SMFS_PLG_KML))
+ RETURN(0);
+
+ //this will do OBD_ALLOC() for ctxt
+ rc = llog_catalog_setup(ctxt, KML_LOG_NAME, smb->smsi_exp,
+ smb->smsi_ctxt, smb->sm_fsfilt,
+ smb->smsi_logs_dir,
+ smb->smsi_objects_dir);
+
+ if (rc) {
+ CERROR("Failed to initialize kml log list catalog %d\n", rc);
+ RETURN(rc);
+ }
+
+ (*ctxt)->llog_proc_cb = smfs_llog_process_rec_cb;
+
+ SMFS_SET(smb->plg_flags, SMFS_PLG_KML);
+
+ RETURN(0);
+}
+
+int smfs_stop_kml(struct super_block *sb, void *arg,
+ struct kml_priv * kml_p)
+{
+ struct smfs_super_info * smb = S2SMI(sb);
+ struct llog_ctxt *ctxt = smb->smsi_kml_log;
+ ENTRY;
+
+ if (!SMFS_IS(smb->plg_flags, SMFS_PLG_KML))
+ RETURN(0);
+
+ SMFS_CLEAR(smb->plg_flags, SMFS_PLG_KML);
+
+ llog_catalog_cleanup(ctxt);
+ OBD_FREE(ctxt, sizeof(*ctxt));
+
+ RETURN(0);
+}
+
+typedef int (*kml_helper)(struct super_block * sb, void *msg, struct kml_priv *);
+static kml_helper smfs_kml_helpers[PLG_HELPER_MAX] = {
+ [PLG_EXIT] smfs_exit_kml,
+ [PLG_START] smfs_start_kml,
+ [PLG_STOP] smfs_stop_kml,
+ [PLG_TRANS_SIZE] smfs_trans_kml,
+ [PLG_TEST_INODE] NULL,
+ [PLG_SET_INODE] NULL,
+};
+
+static int smfs_kml_help_op(int code, struct super_block * sb,
+ void * arg, void * priv)
+{
+ int rc = 0;
+ ENTRY;
+ if (smfs_kml_helpers[code])
+ rc = smfs_kml_helpers[code](sb, arg, (struct kml_priv *) priv);
+ RETURN(rc);
+}
+
+int smfs_init_kml(struct super_block *sb)
+{
+ int rc = 0;
+ struct smfs_super_info *smb = S2SMI(sb);
+ struct smfs_plugin plg = {
+ .plg_type = SMFS_PLG_KML,
+ .plg_pre_op = NULL,
+ .plg_post_op = &smfs_kml_post_op,
+ .plg_helper = &smfs_kml_help_op,
+ .plg_private = NULL,
+ };
+
+ ENTRY;
+
+ rc = ost_rec_pack_init(smb);
+ if (rc)
+ return rc;
+
+ rc = mds_rec_pack_init(smb);
+ if (rc)
+ return rc;
+
+ rc = smfs_register_plugin(sb, &plg);
+
+ RETURN(rc);
+}
+
+
git://git.whamcloud.com / fs / lustre-release.git / blobdiff