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-rw-r--r--xlators/meta/src/meta.c1313
1 files changed, 142 insertions, 1171 deletions
diff --git a/xlators/meta/src/meta.c b/xlators/meta/src/meta.c
index e69719f3cd3..036ed112acf 100644
--- a/xlators/meta/src/meta.c
+++ b/xlators/meta/src/meta.c
@@ -1,5 +1,5 @@
/*
- Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+ Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
@@ -7,1291 +7,262 @@
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
-#include "glusterfs.h"
-#include "dict.h"
#include "xlator.h"
+#include "defaults.h"
-#include "meta.h"
-#include "view.h"
#include "meta-mem-types.h"
+#include "meta.h"
-int32_t
-meta_getattr_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame, op_ret, op_errno, buf);
- return 0;
-}
-
-int32_t
-meta_getattr (call_frame_t *frame,
- xlator_t *this,
- const char *path)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file) {
- if (file->fops && file->fops->getattr) {
- STACK_WIND (frame, meta_getattr_cbk,
- this, file->fops->getattr, path);
- return 0;
- }
- else {
- STACK_UNWIND (frame, 0, 0, file->stbuf);
- return 0;
- }
- }
- else {
- STACK_WIND (frame, meta_getattr_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->getattr,
- path);
- return 0;
- }
-}
-
-int32_t
-meta_chmod_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-
-int32_t
-meta_chmod (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- mode_t mode)
-{
- STACK_WIND (frame,
- meta_chmod_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->chmod,
- path,
- mode);
- return 0;
-}
-
-int32_t
-meta_chown_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-
-int32_t
-meta_chown (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- uid_t uid,
- gid_t gid)
-{
- STACK_WIND (frame,
- meta_chown_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->chown,
- path,
- uid,
- gid);
- return 0;
-}
-
-
-int32_t
-meta_truncate_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-
-int32_t
-meta_truncate (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- off_t offset)
-{
- STACK_WIND (frame,
- meta_truncate_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->truncate,
- path,
- offset);
- return 0;
-}
-
-
-int32_t
-meta_ftruncate_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-
-int32_t
-meta_ftruncate (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd,
- off_t offset)
-{
- STACK_WIND (frame,
- meta_ftruncate_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->ftruncate,
- fd,
- offset);
- return 0;
-}
-
-
-int32_t
-meta_utimes_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-
-int32_t
-meta_utimes (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- struct timespec *buf)
-{
- STACK_WIND (frame,
- meta_utimes_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->utimes,
- path,
- buf);
- return 0;
-}
-
-
-int32_t
-meta_access_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
+#include "meta-hooks.h"
-int32_t
-meta_access (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- mode_t mode)
-{
- STACK_WIND (frame,
- meta_access_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->access,
- path,
- mode);
- return 0;
-}
-int32_t
-meta_readlink_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- char *dest)
+int
+meta_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- dest);
- return 0;
-}
+ inode_t *inode = NULL;
-int32_t
-meta_readlink (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- size_t size)
-{
- STACK_WIND (frame,
- meta_readlink_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->readlink,
- path,
- size);
- return 0;
-}
+ if (META_HOOK (loc) || IS_META_ROOT_GFID (loc->gfid)) {
+ struct iatt iatt = { };
+ struct iatt parent = { };
-int32_t
-meta_mknod_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
+ meta_root_dir_hook (frame, this, loc, xdata);
-int32_t
-meta_mknod (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- mode_t mode,
- dev_t dev)
-{
- STACK_WIND (frame,
- meta_mknod_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->mknod,
- path,
- mode,
- dev);
- return 0;
-}
+ meta_iatt_fill (&iatt, loc->inode, IA_IFDIR);
+ uuid_parse (META_ROOT_GFID, iatt.ia_gfid);
-int32_t
-meta_mkdir_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
+ META_STACK_UNWIND (lookup, frame, 0, 0, loc->inode, &iatt,
+ xdata, &parent);
+ return 0;
+ }
-int32_t
-meta_mkdir (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- mode_t mode)
-{
- STACK_WIND (frame,
- meta_mkdir_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->mkdir,
- path,
- mode);
- return 0;
-}
+ if (loc->parent)
+ inode = loc->parent;
+ else
+ inode = loc->inode;
-int32_t
-meta_unlink_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
+ META_FOP (inode, lookup, frame, this, loc, xdata);
-int32_t
-meta_unlink (call_frame_t *frame,
- xlator_t *this,
- const char *path)
-{
- STACK_WIND (frame,
- meta_unlink_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->unlink,
- path);
- return 0;
+ return 0;
}
-int32_t
-meta_rmdir_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
-int32_t
-meta_rmdir (call_frame_t *frame,
- xlator_t *this,
- const char *path)
+int
+meta_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd,
+ dict_t *xdata)
{
- STACK_WIND (frame,
- meta_rmdir_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->rmdir,
- path);
- return 0;
-}
+ META_FOP (fd->inode, opendir, frame, this, loc, fd, xdata);
-int32_t
-meta_symlink_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
+ return 0;
}
-int32_t
-meta_symlink (call_frame_t *frame,
- xlator_t *this,
- const char *oldpath,
- const char *newpath)
-{
- STACK_WIND (frame,
- meta_symlink_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->symlink,
- oldpath,
- newpath);
- return 0;
-}
-int32_t
-meta_rename_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
+int
+meta_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags, fd_t *fd,
+ dict_t *xdata)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
+ META_FOP (fd->inode, open, frame, this, loc, flags, fd, xdata);
-int32_t
-meta_rename (call_frame_t *frame,
- xlator_t *this,
- const char *oldpath,
- const char *newpath)
-{
- STACK_WIND (frame,
- meta_rename_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->rename,
- oldpath,
- newpath);
- return 0;
+ return 0;
}
-int32_t
-meta_link_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-int32_t
-meta_link (call_frame_t *frame,
- xlator_t *this,
- const char *oldpath,
- const char *newpath)
+int
+meta_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
+ off_t offset, uint32_t flags, dict_t *xdata)
{
- STACK_WIND (frame,
- meta_link_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->link,
- oldpath,
- newpath);
- return 0;
-}
+ META_FOP (fd->inode, readv, frame, this, fd, size, offset, flags, xdata);
-struct _open_local {
- const char *path;
-};
-
-int32_t
-meta_open_cbk (call_frame_t *frame, void *cookie,
- xlator_t *this, int32_t op_ret, int32_t op_errno,
- dict_t *ctx, struct stat *buf)
-{
- struct _open_local *local = frame->local;
- if (local)
- dict_set (ctx, this->name, str_to_data (local->path));
- STACK_UNWIND (frame, op_ret, op_errno, ctx, buf);
- return 0;
-}
-
-int32_t
-meta_open (call_frame_t *frame, xlator_t *this,
- const char *path, int32_t flags, mode_t mode)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file) {
- if (file->fops && file->fops->open) {
- struct _open_local *local = GF_CALLOC (1, sizeof (struct _open_local), gf_meta_mt__open_local);
- ERR_ABORT (local);
- local->path = gf_strdup (path);
- frame->local = local;
- STACK_WIND (frame, meta_open_cbk,
- this, file->fops->open,
- path, flags, mode);
- return 0;
- }
- else {
- dict_t *ctx = get_new_dict ();
- dict_ref (ctx);
- dict_set (ctx, this->name, str_to_data (gf_strdup (path)));
- STACK_UNWIND (frame, 0, 0, ctx, file->stbuf);
- return 0;
- }
- }
- else {
- STACK_WIND (frame, meta_open_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->open,
- path, flags, mode);
- return 0;
- }
-}
-
-int32_t
-meta_create (call_frame_t *frame, xlator_t *this,
- const char *path, int32_t flags, mode_t mode)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file) {
- if (file->fops && file->fops->create) {
- struct _open_local *local = GF_CALLOC (1, sizeof (struct _open_local), gf_meta_mt__open_local);
- ERR_ABORT (local);
- local->path = gf_strdup (path);
- frame->local = local;
- STACK_WIND (frame, meta_open_cbk,
- this, file->fops->create,
- path, flags, mode);
- return 0;
- }
- else {
- STACK_UNWIND (frame, -1, 0, NULL, NULL);
- return 0;
- }
- }
- else {
- STACK_WIND (frame, meta_open_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->create,
- path, flags, mode);
- return 0;
- }
+ return 0;
}
-int32_t
-meta_readv_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct iovec *vector,
- int32_t count)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- vector,
- count);
- return 0;
-}
-int32_t
-meta_readv (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd,
- size_t size,
- off_t offset)
+int
+meta_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- data_t *path_data = dict_get (fd, this->name);
-
- if (path_data) {
- const char *path = data_to_str (path_data);
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file && file->fops && file->fops->readv) {
- STACK_WIND (frame, meta_readv_cbk,
- this, file->fops->readv,
- fd, size, offset);
- return 0;
- }
- }
- else {
- STACK_WIND (frame, meta_readv_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->readv,
- fd, size, offset);
- return 0;
- }
-}
+ META_FOP (fd->inode, flush, frame, this, fd, xdata);
-int32_t
-meta_writev_cbk (call_frame_t *frame, void *cookie,
- xlator_t *this, int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame, op_ret, op_errno);
- return 0;
+ return 0;
}
-int32_t
-meta_writev (call_frame_t *frame, xlator_t *this,
- dict_t *fd,
- struct iovec *vector, int32_t count, off_t offset)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- data_t *path_data = dict_get (fd, this->name);
-
- if (path_data) {
- const char *path = data_to_str (path_data);
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file && file->fops && file->fops->writev) {
- STACK_WIND (frame, meta_writev_cbk,
- this, file->fops->writev,
- fd, vector, count, offset);
- return 0;
- }
- }
- else {
- STACK_WIND (frame, meta_readv_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->writev,
- fd, vector, count, offset);
- return 0;
- }
-}
-int32_t
-meta_flush_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
+int
+meta_stat (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
+ META_FOP (loc->inode, stat, frame, this, loc, xdata);
-int32_t
-meta_flush (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- data_t *path_data = dict_get (fd, this->name);
-
- if (path_data) {
- const char *path = data_to_str (path_data);
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file) {
- if (file->fops && file->fops->flush) {
- STACK_WIND (frame, meta_flush_cbk,
- this, file->fops->flush,
- fd);
return 0;
- }
- else {
- STACK_UNWIND (frame, 0, 0);
- return 0;
- }
- }
- }
- else {
- STACK_WIND (frame, meta_flush_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->flush,
- fd);
- return 0;
- }
}
-int32_t
-meta_release_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
-int32_t
-meta_release (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd)
+int
+meta_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- data_t *path_data = dict_get (fd, this->name);
-
- if (path_data) {
- const char *path = data_to_str (path_data);
- meta_dirent_t *file = lookup_meta_entry (root, path, NULL);
-
- if (file) {
- dict_unref (fd);
- STACK_UNWIND (frame, 0, 0);
- return 0;
- }
- }
- else {
- STACK_WIND (frame, meta_release_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->release,
- fd);
- return 0;
- }
-}
+ META_FOP (fd->inode, fstat, frame, this, fd, xdata);
-int32_t
-meta_fsync_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
+ return 0;
}
-int32_t
-meta_fsync (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd,
- int32_t flags)
-{
- STACK_WIND (frame,
- meta_fsync_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fsync,
- fd,
- flags);
- return 0;
-}
-int32_t
-meta_fgetattr_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct stat *buf)
+int
+meta_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
+ off_t offset, dict_t *xdata)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
+ META_FOP (fd->inode, readdir, frame, this, fd, size, offset, xdata);
-int32_t
-meta_fgetattr (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd)
-{
- STACK_WIND (frame,
- meta_fgetattr_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fgetattr,
- fd);
- return 0;
+ return 0;
}
-int32_t
-meta_opendir_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- dict_t *fd)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- fd);
- return 0;
-}
-int32_t
-meta_opendir (call_frame_t *frame,
- xlator_t *this,
- const char *path)
+int
+meta_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
+ off_t offset, dict_t *xdata)
{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
- meta_dirent_t *dir = lookup_meta_entry (root, path, NULL);
-
- if (dir) {
- dict_t *ctx = get_new_dict ();
- dict_set (ctx, this->name, str_to_data (gf_strdup (path)));
- STACK_UNWIND (frame, 0, 0, ctx);
- return 0;
- }
- else {
- STACK_WIND (frame, meta_opendir_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->opendir,
- path);
- return 0;
- }
-}
+ META_FOP (fd->inode, readdirp, frame, this, fd, size, offset, xdata);
-int32_t
-meta_readdir_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- dir_entry_t *entries,
- int32_t count)
-{
- meta_private_t *priv = (meta_private_t *)this->private;
-
- if ((int) cookie == 1) {
- dir_entry_t *dir = GF_CALLOC (1, sizeof (dir_entry_t),
- gf_meta_mt_dir_entry_t);
- ERR_ABORT (dir);
-
- dir->name = gf_strdup (".meta");
- memcpy (&dir->buf, priv->tree->stbuf, sizeof (struct stat));
- dir->next = entries->next;
- entries->next = dir;
-
- STACK_UNWIND (frame, op_ret, op_errno, entries, count+1);
- return 0;
- }
-
- STACK_UNWIND (frame, op_ret, op_errno, entries, count);
- return 0;
+ return 0;
}
-int32_t
-meta_readdir (call_frame_t *frame,
- xlator_t *this,
- const char *path)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- meta_dirent_t *root = priv->tree;
-
- meta_dirent_t *dir = lookup_meta_entry (root, path, NULL);
- if (dir) {
- if (dir->fops && dir->fops->readdir) {
- STACK_WIND (frame, meta_readdir_cbk,
- this, dir->fops->readdir, path);
- return 0;
- }
- else {
- int count = 0;
- dir = dir->children;
- dir_entry_t *entries = NULL;
-
- while (dir) {
- dir_entry_t *d = GF_CALLOC (1, sizeof (dir_entry_t),
- gf_meta_mt_dir_entry_t);
- ERR_ABORT (d);
- d->name = dir->name;
- d->buf = *dir->stbuf;
- d->next = entries;
- entries = d;
- count++;
- dir = dir->next;
- }
-
- dir_entry_t *header = GF_CALLOC (1, sizeof (dir_entry_t),
- gf_meta_mt_dir_entry_t);
- ERR_ABORT (header);
- header->next = entries;
- STACK_UNWIND (frame, 0, 0, header, count);
- return 0;
- }
- }
- else {
- if (!strcmp (path, "/")) {
- STACK_WIND_COOKIE (frame, meta_readdir_cbk,
- (int) 1, /* cookie to tell _cbk to add .meta entry */
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->readdir,
- path);
- }
- else {
- STACK_WIND (frame, meta_readdir_cbk,
- FIRST_CHILD(this), FIRST_CHILD(this)->fops->readdir,
- path);
- }
- }
- return 0;
-}
-int32_t
-meta_releasedir_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
+int
+meta_readlink (call_frame_t *frame, xlator_t *this, loc_t *loc, size_t size,
+ dict_t *xdata)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
+ META_FOP (loc->inode, readlink, frame, this, loc, size, xdata);
-int32_t
-meta_releasedir (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd)
-{
- STACK_WIND (frame,
- meta_releasedir_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->releasedir,
- fd);
- return 0;
-}
-
-int32_t
-meta_fsyncdir_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
-
-int32_t
-meta_fsyncdir (call_frame_t *frame,
- xlator_t *this,
- dict_t *fd,
- int32_t flags)
-{
- STACK_WIND (frame,
- meta_fsyncdir_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->fsyncdir,
- fd,
- flags);
- return 0;
+ return 0;
}
-int32_t
-meta_statfs_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct statvfs *buf)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- buf);
- return 0;
-}
-int32_t
-meta_statfs (call_frame_t *frame,
- xlator_t *this,
- const char *path)
+int
+meta_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *iov,
+ int count, off_t offset, uint32_t flags, struct iobref *iobref,
+ dict_t *xdata)
{
- STACK_WIND (frame,
- meta_statfs_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->statfs,
- path);
- return 0;
+ META_FOP (fd->inode, writev, frame, this, fd, iov, count, offset, flags,
+ iobref, xdata);
+ return 0;
}
-int32_t
-meta_setxattr_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
-}
-int32_t
-meta_setxattr (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- const char *name,
- const char *value,
- size_t size,
- int32_t flags)
+int
+meta_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset,
+ dict_t *xdata)
{
- STACK_WIND (frame,
- meta_setxattr_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->setxattr,
- path,
- name,
- value,
- size,
- flags);
- return 0;
-}
+ META_FOP (loc->inode, truncate, frame, this, loc, offset, xdata);
-int32_t
-meta_getxattr_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- char *value)
-{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- value);
- return 0;
+ return 0;
}
-int32_t
-meta_getxattr (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- const char *name,
- size_t size)
-{
- STACK_WIND (frame,
- meta_getxattr_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->getxattr,
- path,
- name,
- size);
- return 0;
-}
-int32_t
-meta_listxattr_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- char *value)
+int
+meta_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
+ dict_t *xdata)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- value);
- return 0;
-}
+ META_FOP (fd->inode, ftruncate, frame, this, fd, offset, xdata);
-int32_t
-meta_listxattr (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- size_t size)
-{
- STACK_WIND (frame,
- meta_listxattr_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->listxattr,
- path,
- size);
- return 0;
+ return 0;
}
-int32_t
-meta_removexattr_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno)
+int
+meta_forget (xlator_t *this, inode_t *inode)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno);
- return 0;
+ return 0;
}
-int32_t
-meta_removexattr (call_frame_t *frame,
- xlator_t *this,
- const char *path,
- const char *name)
-{
- STACK_WIND (frame,
- meta_removexattr_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->removexattr,
- path,
- name);
- return 0;
-}
-int32_t
-meta_lk_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct gf_flock *lock)
+int
+meta_release (xlator_t *this, fd_t *fd)
{
- STACK_UNWIND (frame,
- op_ret,
- op_errno,
- lock);
- return 0;
+ return meta_fd_release (fd, this);
}
-int32_t
-meta_lk (call_frame_t *frame,
- xlator_t *this,
- dict_t *file,
- int32_t cmd,
- struct gf_flock *lock)
-{
- STACK_WIND (frame,
- meta_lk_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->lk,
- file,
- cmd,
- lock);
- return 0;
-}
-static void
-add_xlator_to_tree (meta_dirent_t *tree, xlator_t *this,
- const char *prefix)
+int
+meta_releasedir (xlator_t *this, fd_t *fd)
{
- char *dir;
- gf_asprintf (&dir, "%s/%s", prefix, this->name);
-
- char *children;
- gf_asprintf (&children, "%s/%s", dir, "subvolumes");
-
- char *type;
- gf_asprintf (&type, "%s/%s", dir, "type");
-
- char *view;
- gf_asprintf (&view, "%s/%s", dir, "view");
-
- insert_meta_entry (tree, dir, S_IFDIR, NULL, NULL);
- insert_meta_entry (tree, children, S_IFDIR, NULL, NULL);
- meta_dirent_t *v = insert_meta_entry (tree, view, S_IFDIR, NULL,
- &meta_xlator_view_fops);
- v->view_xlator = this;
- meta_dirent_t *t = insert_meta_entry (tree, type, S_IFREG, NULL,
- &meta_xlator_type_fops);
- t->view_xlator = this;
-
- xlator_list_t *trav = this->children;
- while (trav) {
- add_xlator_to_tree (tree, trav->xlator, children);
- trav = trav->next;
- }
+ return meta_fd_release (fd, this);
}
-static void
-build_meta_tree (xlator_t *this)
-{
- meta_private_t *priv = (meta_private_t *) this->private;
- priv->tree = GF_CALLOC (1, sizeof (meta_dirent_t),
- gf_meta_mt_meta_dirent_t);
- ERR_ABORT (priv->tree);
- priv->tree->name = gf_strdup (".meta");
- priv->tree->stbuf = new_stbuf ();
- priv->tree->stbuf->st_mode = S_IFDIR | S_IRUSR | S_IRGRP | S_IROTH |
- S_IXUSR | S_IXGRP | S_IXOTH;
-
- insert_meta_entry (priv->tree, "/.meta/version",
- S_IFREG, NULL, &meta_version_fops);
-
- insert_meta_entry (priv->tree, "/.meta/xlators",
- S_IFDIR, NULL, NULL);
-
- xlator_list_t *trav = this->children;
- while (trav) {
- add_xlator_to_tree (priv->tree, trav->xlator, "/.meta/xlators");
- trav = trav->next;
- }
-}
-int32_t
+int
mem_acct_init (xlator_t *this)
{
- int ret = -1;
+ int ret = -1;
if (!this)
return ret;
ret = xlator_mem_acct_init (this, gf_meta_mt_end + 1);
-
+
if (ret != 0) {
- gf_log(this->name, GF_LOG_ERROR, "Memory accounting init"
- "failed");
+ gf_log (this->name, GF_LOG_ERROR,
+ "Memory accounting init failed");
return ret;
}
return ret;
}
-int32_t
+
+int
init (xlator_t *this)
{
- if (this->parent != NULL) {
- gf_log ("meta", GF_LOG_ERROR, "FATAL: meta should be the root of the xlator tree");
- return -1;
- }
-
- meta_private_t *priv = GF_CALLOC (1, sizeof (meta_private_t),
- gf_meta_mt_meta_private_t);
- ERR_ABORT (priv);
-
- data_t *directory = dict_get (this->options, "directory");
- if (directory) {
- priv->directory = gf_strdup (data_to_str (directory));
- }
- else {
- priv->directory = ".meta";
- }
-
- this->private = priv;
- build_meta_tree (this);
-
- return 0;
+ meta_priv_t *priv = NULL;
+
+ priv = GF_CALLOC (sizeof(*priv), 1, gf_meta_mt_priv_t);
+ if (!priv)
+ return -1;
+
+ GF_OPTION_INIT ("meta-dir-name", priv->meta_dir_name, str, out);
+
+ this->private = priv;
+out:
+ return 0;
}
-int32_t
+
+int
fini (xlator_t *this)
{
- return 0;
+ return 0;
}
+
struct xlator_fops fops = {
- .getattr = meta_getattr,
- .readlink = meta_readlink,
- .mknod = meta_mknod,
- .mkdir = meta_mkdir,
- .unlink = meta_unlink,
- .rmdir = meta_rmdir,
- .symlink = meta_symlink,
- .rename = meta_rename,
- .link = meta_link,
- .chmod = meta_chmod,
- .chown = meta_chown,
- .truncate = meta_truncate,
- .utimes = meta_utimes,
- .open = meta_open,
- .readv = meta_readv,
- .writev = meta_writev,
- .statfs = meta_statfs,
- .flush = meta_flush,
- .release = meta_release,
- .fsync = meta_fsync,
- .setxattr = meta_setxattr,
- .getxattr = meta_getxattr,
- .listxattr = meta_listxattr,
- .removexattr = meta_removexattr,
- .opendir = meta_opendir,
- .readdir = meta_readdir,
- .releasedir = meta_releasedir,
- .fsyncdir = meta_fsyncdir,
- .access = meta_access,
- .ftruncate = meta_ftruncate,
- .fgetattr = meta_fgetattr,
- .create = meta_create,
- .lk = meta_lk,
+ .lookup = meta_lookup,
+ .opendir = meta_opendir,
+ .open = meta_open,
+ .readv = meta_readv,
+ .flush = meta_flush,
+ .stat = meta_stat,
+ .fstat = meta_fstat,
+ .readdir = meta_readdir,
+ .readdirp = meta_readdirp,
+ .readlink = meta_readlink,
+ .writev = meta_writev,
+ .truncate = meta_truncate,
+ .ftruncate = meta_ftruncate
+};
+
+
+struct xlator_cbks cbks = {
+ .forget = meta_forget,
+ .release = meta_release,
+ .releasedir = meta_releasedir,
+};
+
+
+struct volume_options options[] = {
+ { .key = {"meta-dir-name"},
+ .type = GF_OPTION_TYPE_STR,
+ .default_value = DEFAULT_META_DIR_NAME,
+ .description = "Name of default meta directory."
+ },
+ { .key = {NULL} },
};