diff options
Diffstat (limited to 'xlators/meta/src/meta.h')
| -rw-r--r-- | xlators/meta/src/meta.h | 162 |
1 files changed, 127 insertions, 35 deletions
diff --git a/xlators/meta/src/meta.h b/xlators/meta/src/meta.h index 5636487c985..7f0cf28808a 100644 --- a/xlators/meta/src/meta.h +++ b/xlators/meta/src/meta.h @@ -1,48 +1,140 @@ /* - Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com> + Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ - #ifndef __META_H__ #define __META_H__ -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -struct _meta_dirent { - const char *name; - int type; - struct _meta_dirent *children; - struct _meta_dirent *parent; - struct _meta_dirent *next; - struct stat *stbuf; - xlator_t *view_xlator; - struct xlator_fops *fops; +#include <glusterfs/strfd.h> + +#define DEFAULT_META_DIR_NAME ".meta" + +#define META_ROOT_GFID "ba926388-bb9c-4eec-ad60-79dba4cc083a" + +#define IS_META_ROOT_GFID(g) (strcmp(uuid_utoa(g), META_ROOT_GFID) == 0) + +typedef int (*meta_hook_t)(call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xdata); + +typedef struct { + dict_t *xdata; +} meta_local_t; + +typedef struct { + char *meta_dir_name; +} meta_priv_t; + +struct meta_dirent { + const char *name; + ia_type_t type; + meta_hook_t hook; +}; + +#define DOT_DOTDOT \ + {.name = ".", .type = IA_IFDIR}, { .name = "..", .type = IA_IFDIR } + +struct meta_ops { + struct meta_dirent *fixed_dirents; + int (*dir_fill)(xlator_t *this, inode_t *dir, struct meta_dirent **entries); + int (*file_fill)(xlator_t *this, inode_t *file, strfd_t *strfd); + int (*iatt_fill)(xlator_t *this, inode_t *inode, struct iatt *iatt); + int (*link_fill)(xlator_t *this, inode_t *inode, strfd_t *strfd); + int (*file_write)(xlator_t *this, fd_t *fd, struct iovec *iov, int count); + struct xlator_fops fops; + struct xlator_cbks cbks; }; -typedef struct _meta_dirent meta_dirent_t; typedef struct { - const char *directory; - meta_dirent_t *tree; -} meta_private_t; + char *data; + struct meta_dirent *dirents; + size_t size; +} meta_fd_t; + +#define COUNT(arr) (sizeof(arr) / sizeof(arr[0])) + +#define META_HOOK(loc) \ + (__is_root_gfid(loc->pargfid) && \ + !strcmp(loc->name, META_PRIV(THIS)->meta_dir_name)) + +#define META_PRIV(t) ((meta_priv_t *)(t->private)) + +#define META_STACK_UNWIND(fop, frame, params...) \ + do { \ + meta_local_t *__local = NULL; \ + xlator_t *__this = NULL; \ + if (frame) { \ + __local = frame->local; \ + __this = frame->this; \ + frame->local = NULL; \ + } \ + STACK_UNWIND_STRICT(fop, frame, params); \ + if (__local) { \ + meta_local_cleanup(__local, __this); \ + } \ + } while (0) + +#define META_FOP(i, fop, fr, t, params...) \ + { \ + struct xlator_fops *_fops = NULL; \ + \ + _fops = meta_fops_get(i, t); \ + \ + _fops->fop(fr, t, params); \ + } \ + while (0) + +void +meta_iatt_fill(struct iatt *iatt, inode_t *inode, ia_type_t type); + +int +meta_inode_discover(call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xdata); + +int +meta_ops_set(inode_t *inode, xlator_t *this, struct meta_ops *ops); + +struct xlator_fops * +meta_fops_get(inode_t *inode, xlator_t *this); +struct xlator_cbks * +meta_cbks_get(inode_t *inode, xlator_t *this); +struct meta_ops * +meta_ops_get(inode_t *inode, xlator_t *this); + +int +meta_ctx_set(inode_t *inode, xlator_t *this, void *ctx); + +void * +meta_ctx_get(inode_t *inode, xlator_t *this); + +void +meta_local_cleanup(meta_local_t *local, xlator_t *this); + +struct xlator_fops * +meta_defaults_init(struct xlator_fops *fops); + +meta_fd_t * +meta_fd_get(fd_t *fd, xlator_t *this); + +int +meta_fd_release(fd_t *fd, xlator_t *this); + +dict_t * +meta_direct_io_mode(dict_t *xdata, call_frame_t *frame); + +meta_local_t * +meta_local(call_frame_t *frame); + +int +meta_file_fill(xlator_t *this, fd_t *fd); -#include "tree.h" -#include "misc.h" +int +meta_dir_fill(xlator_t *this, fd_t *fd); +int +fixed_dirents_len(struct meta_dirent *dirents); #endif /* __META_H__ */ |