#include <linux/lustre_smfs.h>
#include "smfs_internal.h"
-smfs_pack_rec_func smfs_get_rec_pack_type(struct super_block *sb)
+#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 smfs_pack_rec_func smfs_get_rec_pack_type(struct super_block *sb)
{
struct smfs_super_info *smsi = S2SMI(sb);
return smsi->smsi_pack_rec[index];
}
+static int smfs_post_kml_rec(struct inode *dir, void *de, void *data1,
+ void *data2, int op);
+
+static int smfs_rec_post_hook(struct inode *inode, void *dentry,
+ void *data1, void *data2, int op, void *handle)
+{
+ int rc = 0;
+ ENTRY;
+
+ if (smfs_do_rec(inode))
+ rc = smfs_post_kml_rec(inode, dentry, data1, data2, op);
+
+ RETURN(rc);
+}
+
+#define KML_HOOK "kml_hook"
int smfs_rec_init(struct super_block *sb)
{
struct smfs_super_info *smfs_info = S2SMI(sb);
+ struct smfs_hook_ops *rec_hops = NULL;
int rc = 0;
SMFS_SET_REC(smfs_info);
- ost_rec_pack_init(sb);
- mds_rec_pack_init(sb);
+ ost_rec_pack_init(smfs_info);
+ mds_rec_pack_init(smfs_info);
+ rec_hops = smfs_alloc_hook_ops(KML_HOOK, NULL, smfs_rec_post_hook);
+ if (!rec_hops) {
+ RETURN(-ENOMEM);
+ }
+ rc = smfs_register_hook_ops(smfs_info, rec_hops);
+ if (rc && rec_hops) {
+ smfs_unregister_hook_ops(smfs_info, rec_hops->smh_name);
+ smfs_free_hook_ops(rec_hops);
+ }
RETURN(rc);
}
-int smfs_rec_cleanup(struct super_block *sb)
+int smfs_rec_cleanup(struct smfs_super_info *smfs_info)
{
+ struct smfs_hook_ops *rec_hops;
int rc = 0;
- SMFS_CLEAN_REC(S2SMI(sb));
+ rec_hops = smfs_unregister_hook_ops(smfs_info, KML_HOOK);
+ smfs_free_hook_ops(rec_hops);
+ SMFS_CLEAN_REC(smfs_info);
+
RETURN(rc);
}
int rc = 0;
ENTRY;
+ if (!SMFS_DO_REC(S2SMI(inode->i_sb)))
+ RETURN(0);
+
if (lmm) {
OBD_ALLOC(set_lmm, lmm_size + sizeof(lmm_size));
if (!set_lmm)
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);
}
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;
+ 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;
+ int rc;
+
+ pack_func = smfs_get_rec_pack_type(dir->i_sb);
+ if (!pack_func) {
+ return (0);
+ }
+ rc = pack_func(buffer, dentry, dir, data1, data2, op);
+ return rc;
+}
+
+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;
+
+ 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 smfs_super_info *sinfo;
+ struct dentry *old_dentry = (struct dentry *)data1;
+ char *buffer = NULL, *pbuf = NULL;
+ int rc = 0, length = 0, buf_len = 0;
+
+ 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->d_parent,
+ old_dentry->d_parent, REINT_LINK);
+ 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_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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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);
+}
+
+typedef int (*post_kml_rec)(struct inode *dir, struct dentry *dentry,
+ void *data1, void *data2);
+
+static post_kml_rec smfs_kml_post[HOOK_MAX + 1] = {
+ [HOOK_CREATE] smfs_post_rec_create,
+ [HOOK_LOOKUP] NULL,
+ [HOOK_LINK] smfs_post_rec_link,
+ [HOOK_UNLINK] smfs_post_rec_unlink,
+ [HOOK_SYMLINK] smfs_post_rec_create,
+ [HOOK_MKDIR] smfs_post_rec_create,
+ [HOOK_RMDIR] smfs_post_rec_unlink,
+ [HOOK_MKNOD] smfs_post_rec_create,
+ [HOOK_RENAME] smfs_post_rec_rename,
+ [HOOK_SETATTR] smfs_post_rec_setattr,
+ [HOOK_WRITE] smfs_post_rec_write,
+ [HOOK_READDIR] NULL,
+};
+static int smfs_post_kml_rec(struct inode *dir, void *de, void *data1,
+ void *data2, int op)
+{
+ if (smfs_kml_post[op]) {
+ struct dentry *dentry = (struct dentry *)de;
+
+ return smfs_kml_post[op](dir, dentry, data1, data2);
+ }
+ return 0;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff