diff options
Diffstat (limited to 'xlators/storage/bdb/src/bdb.c')
| -rw-r--r-- | xlators/storage/bdb/src/bdb.c | 3371 |
1 files changed, 0 insertions, 3371 deletions
diff --git a/xlators/storage/bdb/src/bdb.c b/xlators/storage/bdb/src/bdb.c deleted file mode 100644 index 6044ef47371..00000000000 --- a/xlators/storage/bdb/src/bdb.c +++ /dev/null @@ -1,3371 +0,0 @@ -/* - Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.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/>. -*/ - -/* bdb based storage translator - named as 'bdb' translator - * - * - * There can be only two modes for files existing on bdb translator: - * 1. DIRECTORY - directories are stored by bdb as regular directories on background - * file-system. directories also have an entry in the ns_db.db of their parent directory. - * 2. REGULAR FILE - regular files are stored as records in the storage_db.db present in - * the directory. regular files also have an entry in ns_db.db - * - * Internally bdb has a maximum of three different types of logical files associated with - * each directory: - * 1. storage_db.db - storage database, used to store the data corresponding to regular - * files in the form of key/value pair. file-name is the 'key' and data - * is 'value'. - * 2. directory (all subdirectories) - any subdirectory will have a regular directory entry. - */ -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#define __XOPEN_SOURCE 500 - -#include <stdint.h> -#include <sys/time.h> -#include <errno.h> -#include <ftw.h> -#include <libgen.h> - -#include "glusterfs.h" -#include "dict.h" -#include "logging.h" -#include "bdb.h" -#include "xlator.h" -#include "defaults.h" -#include "common-utils.h" - -/* to be used only by fops, nobody else */ -#define BDB_ENV(this) ((((struct bdb_private *)this->private)->b_table)->dbenv) -#define B_TABLE(this) (((struct bdb_private *)this->private)->b_table) - - -int32_t -bdb_mknod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode, - dev_t dev) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *key_string = NULL; /* after translating loc->path to DB key */ - char *db_path = NULL; - bctx_t *bctx = NULL; - struct stat stbuf = {0,}; - - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - if (!S_ISREG(mode)) { - gf_log (this->name, - GF_LOG_DEBUG, - "mknod for non-regular file"); - op_ret = -1; - op_errno = EPERM; - goto out; - } /* if(!S_ISREG(mode)) */ - - bctx = bctx_parent (B_TABLE(this), loc->path); - - if (bctx == NULL) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to get bctx for path: %s", loc->path); - op_ret = -1; - op_errno = ENOENT; - goto out; - } /* if(bctx == NULL) */ - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bctx->directory); - - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - MAKE_KEY_FROM_PATH (key_string, loc->path); - op_ret = bdb_db_put (bctx, NULL, key_string, NULL, 0, 0, 0); - if (op_ret > 0) { - /* create successful */ - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - stbuf.st_mode = mode; - stbuf.st_size = 0; - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - } else { - gf_log (this->name, - GF_LOG_ERROR, - "bdb_db_get() failed for path: %s", loc->path); - op_ret = -1; - op_errno = ENOENT; - }/* if (!op_ret)...else */ - -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - - STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf); - return 0; -} - -static inline int32_t -is_dir_empty (xlator_t *this, - loc_t *loc) -{ - int32_t ret = 1; - bctx_t *bctx = NULL; - DIR *dir = NULL; - char *real_path = NULL; - void *dbstat = NULL; - struct dirent *entry = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - bctx = bctx_lookup (B_TABLE(this), loc->path); - if (bctx == NULL) { - gf_log (this->name, - GF_LOG_DEBUG, - "failed to get bctx from inode for dir: %s," - "assuming empty directory", - loc->path); - ret = 1; - goto out; - } - - dbstat = bdb_db_stat (bctx, NULL, 0); - if (dbstat) { - switch (bctx->table->access_mode) - { - case DB_HASH: - ret = (((DB_HASH_STAT *)dbstat)->hash_nkeys == 0); - break; - case DB_BTREE: - case DB_RECNO: - ret = (((DB_BTREE_STAT *)dbstat)->bt_nkeys == 0); - break; - case DB_QUEUE: - ret = (((DB_QUEUE_STAT *)dbstat)->qs_nkeys == 0); - break; - case DB_UNKNOWN: - gf_log (this->name, - GF_LOG_CRITICAL, - "unknown access-mode set for db"); - ret = 0; - } - } else { - gf_log (this->name, - GF_LOG_ERROR, - "failed to get db stat for db at path: %s", loc->path); - ret = 1; - goto out; - } - - MAKE_REAL_PATH (real_path, this, loc->path); - dir = opendir (real_path); - if (dir == NULL) { - gf_log (this->name, - GF_LOG_DEBUG, - "failed to opendir(%s)", loc->path); - ret = 0; - goto out; - } - - while ((entry = readdir (dir))) { - if ((!IS_BDB_PRIVATE_FILE(entry->d_name)) && - (!IS_DOT_DOTDOT(entry->d_name))) { - gf_log (this->name, - GF_LOG_DEBUG, - "directory (%s) not empty, has a non-db entry", - loc->path); - ret = 0; - break; - }/* if(!IS_BDB_PRIVATE_FILE()) */ - } /* while(true) */ - closedir (dir); -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - return ret; -} - -int32_t -bdb_rename (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - struct bdb_private *private = NULL; - bctx_table_t *table = NULL; - bctx_t *oldbctx = NULL; - bctx_t *newbctx = NULL; - bctx_t *tmpbctx = NULL; - int32_t op_ret = -1; - int32_t op_errno = ENOENT; - int32_t read_size = 0; - struct stat stbuf = {0,}; - struct stat old_stbuf = {0,}; - DB_TXN *txnid = NULL; - char *real_newpath = NULL; - char *real_oldpath = NULL; - char *oldkey = NULL; - char *newkey = NULL; - char *buf = NULL; /* pointer to temporary buffer, where - * the contents of a file are read, if - * file being renamed is a regular file */ - char *real_db_newpath = NULL; - char *tmp_db_newpath = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, newloc, out); - GF_VALIDATE_OR_GOTO (this->name, oldloc, out); - - private = this->private; - table = private->b_table; - - MAKE_REAL_PATH (real_oldpath, this, oldloc->path); - - if (S_ISREG (oldloc->inode->st_mode)) { - oldbctx = bctx_parent (B_TABLE(this), oldloc->path); - MAKE_REAL_PATH (real_newpath, this, newloc->path); - - op_ret = lstat (real_newpath, &stbuf); - - if ((op_ret == 0) && (S_ISDIR (stbuf.st_mode))) { - op_ret = -1; - op_errno = EISDIR; - goto out; - } - if (op_ret == 0) { - /* destination is a symlink */ - MAKE_KEY_FROM_PATH (oldkey, oldloc->path); - MAKE_KEY_FROM_PATH (newkey, newloc->path); - - op_ret = unlink (real_newpath); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to unlink %s (%s)", - newloc->path, strerror (op_errno)); - goto out; - } - newbctx = bctx_parent (B_TABLE (this), newloc->path); - GF_VALIDATE_OR_GOTO (this->name, newbctx, out); - - op_ret = bdb_txn_begin (BDB_ENV(this), &txnid); - - if ((read_size = - bdb_db_get (oldbctx, txnid, oldkey, &buf, 0, 0)) < 0) { - bdb_txn_abort (txnid); - } else if ((op_ret = - bdb_db_del (oldbctx, txnid, oldkey)) != 0) { - bdb_txn_abort (txnid); - } else if ((op_ret = bdb_db_put (newbctx, txnid, - newkey, buf, - read_size, 0, 0)) != 0) { - bdb_txn_abort (txnid); - } else { - bdb_txn_commit (txnid); - } - - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (newbctx); - } else { - /* destination doesn't exist or a regular file */ - MAKE_KEY_FROM_PATH (oldkey, oldloc->path); - MAKE_KEY_FROM_PATH (newkey, newloc->path); - - newbctx = bctx_parent (B_TABLE (this), newloc->path); - GF_VALIDATE_OR_GOTO (this->name, newbctx, out); - - op_ret = bdb_txn_begin (BDB_ENV(this), &txnid); - - if ((read_size = bdb_db_get (oldbctx, txnid, - oldkey, &buf, - 0, 0)) < 0) { - bdb_txn_abort (txnid); - } else if ((op_ret = bdb_db_del (oldbctx, - txnid, oldkey)) != 0) { - bdb_txn_abort (txnid); - } else if ((op_ret = bdb_db_put (newbctx, txnid, - newkey, buf, - read_size, 0, 0)) != 0) { - bdb_txn_abort (txnid); - } else { - bdb_txn_commit (txnid); - } - - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (newbctx); - } - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (oldbctx); - } else if (S_ISLNK (oldloc->inode->st_mode)) { - MAKE_REAL_PATH (real_newpath, this, newloc->path); - op_ret = lstat (real_newpath, &stbuf); - if ((op_ret == 0) && (S_ISDIR (stbuf.st_mode))) { - op_ret = -1; - op_errno = EISDIR; - goto out; - } - - if (op_ret == 0){ - /* destination exists and is also a symlink */ - MAKE_REAL_PATH (real_oldpath, this, oldloc->path); - op_ret = rename (real_oldpath, real_newpath); - op_errno = errno; - - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to rename symlink %s (%s)", - oldloc->path, strerror (op_errno)); - } - goto out; - } - - /* destination doesn't exist */ - MAKE_REAL_PATH (real_oldpath, this, oldloc->path); - MAKE_KEY_FROM_PATH (newkey, newloc->path); - newbctx = bctx_parent (B_TABLE (this), newloc->path); - GF_VALIDATE_OR_GOTO (this->name, newbctx, out); - - op_ret = bdb_db_del (newbctx, txnid, newkey); - if (op_ret != 0) { - /* no problem */ - } - op_ret = rename (real_oldpath, real_newpath); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to rename %s to %s (%s)", - oldloc->path, newloc->path, strerror (op_errno)); - goto out; - } - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (newbctx); - } else if (S_ISDIR (oldloc->inode->st_mode) && - (old_stbuf.st_nlink == 2)) { - - tmp_db_newpath = tempnam (private->export_path, "rename_temp"); - GF_VALIDATE_OR_GOTO (this->name, tmp_db_newpath, out); - - MAKE_REAL_PATH (real_newpath, this, newloc->path); - - MAKE_REAL_PATH_TO_STORAGE_DB (real_db_newpath, this, newloc->path); - - oldbctx = bctx_lookup (B_TABLE(this), oldloc->path); - op_ret = -1; - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, oldbctx, out); - - op_ret = lstat (real_newpath, &stbuf); - if ((op_ret == 0) && - S_ISDIR (stbuf.st_mode) && - is_dir_empty (this, newloc)) { - - tmpbctx = bctx_rename (oldbctx, tmp_db_newpath); - op_ret = -1; - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, tmpbctx, out); - - op_ret = rename (real_oldpath, real_newpath); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "rename directory %s to %s failed: %s", - oldloc->path, newloc->path, - strerror (errno)); - op_ret = bdb_db_rename (table, - tmp_db_newpath, - oldbctx->db_path); - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "renaming temp database back to old db failed" - " for directory %s", oldloc->path); - goto out; - } else { - /* this is a error case, set op_errno & op_ret */ - op_ret = -1; - op_errno = ENOENT; /* TODO: errno */ - } - } - op_ret = bdb_db_rename (table, tmp_db_newpath, real_db_newpath); - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "renaming temp database to new db failed" - " for directory %s", oldloc->path); - goto out; - } - } else if ((op_ret != 0) && (errno == ENOENT)) { - tmp_db_newpath = tempnam (private->export_path, "rename_temp"); - GF_VALIDATE_OR_GOTO (this->name, tmp_db_newpath, out); - - tmpbctx = bctx_rename (oldbctx, tmp_db_newpath); - op_ret = -1; - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, tmpbctx, out); - - op_ret = rename (real_oldpath, real_newpath); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "rename directory %s to %s failed: %s", - oldloc->path, newloc->path, - strerror (errno)); - op_ret = bdb_db_rename (table, - tmp_db_newpath, - oldbctx->db_path); - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "renaming temp database back to old db failed" - " for directory %s", oldloc->path); - goto out; - } else { - /* this is a error case, set op_errno & op_ret */ - op_ret = -1; - op_errno = ENOENT; /* TODO: errno */ - } - } else { - op_ret = bdb_db_rename (table, - tmp_db_newpath, - real_db_newpath); - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "renaming temp database to new db failed" - " for directory %s", oldloc->path); - goto out; - } else { - /* this is a error case, set op_errno & op_ret */ - op_ret = -1; - op_errno = ENOENT; /* TODO: errno */ - } - } - } - } else { - gf_log (this->name, - GF_LOG_CRITICAL, - "rename called on non-existent file type"); - op_ret = -1; - op_errno = EPERM; - } - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - return 0; -} - -int32_t -bdb_link (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, -1, EPERM, NULL, NULL); - return 0; -} - -int32_t -is_space_left (xlator_t *this, - size_t size) -{ - struct bdb_private *private = this->private; - struct statvfs stbuf = {0,}; - int32_t ret = -1; - fsblkcnt_t req_blocks = 0; - fsblkcnt_t usable_blocks = 0; - - ret = statvfs (private->export_path, &stbuf); - if (ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to do statvfs on %s", private->export_path); - return 0; - } else { - req_blocks = (size / stbuf.f_frsize) + 1; - - usable_blocks = (stbuf.f_bfree - BDB_ENOSPC_THRESHOLD); - - gf_log (this->name, GF_LOG_DEBUG, - "requested size: %"GF_PRI_SIZET"\nfree blocks: %"PRIu64"\nblock size: %lu\nfrag size: %lu", - size, stbuf.f_bfree, stbuf.f_bsize, stbuf.f_frsize); - - if (req_blocks < usable_blocks) - return 1; - else - return 0; - } -} - -int32_t -bdb_create (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - mode_t mode, - fd_t *fd) -{ - int32_t op_ret = -1; - int32_t op_errno = EPERM; - char *db_path = NULL; - struct stat stbuf = {0,}; - bctx_t *bctx = NULL; - struct bdb_private *private = NULL; - char *key_string = NULL; - struct bdb_fd *bfd = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - private = this->private; - - bctx = bctx_parent (B_TABLE(this), loc->path); - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - MAKE_KEY_FROM_PATH (key_string, loc->path); - op_ret = bdb_db_put (bctx, NULL, key_string, NULL, 0, 0, 0); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, (op_ret == 0), out); - - /* create successful */ - bfd = CALLOC (1, sizeof (*bfd)); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - /* NOTE: bdb_get_bctx_from () returns bctx with a ref */ - bfd->ctx = bctx; - bfd->key = strdup (key_string); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bfd->key, out); - - BDB_SET_BFD (this, fd, bfd); - - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - stbuf.st_mode = private->file_mode; - stbuf.st_size = 0; - stbuf.st_nlink = 1; - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - op_ret = 0; - op_errno = 0; -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, fd, loc->inode, &stbuf); - - return 0; -} - - -/* bdb_open - * - * as input parameters bdb_open gets the file name, i.e key. bdb_open should effectively - * do: store key, open storage db, store storage-db pointer. - * - */ -int32_t -bdb_open (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - fd_t *fd) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - bctx_t *bctx = NULL; - char *key_string = NULL; - struct bdb_fd *bfd = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - bctx = bctx_parent (B_TABLE(this), loc->path); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - bfd = CALLOC (1, sizeof (*bfd)); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - /* NOTE: bctx_parent () returns bctx with a ref */ - bfd->ctx = bctx; - - MAKE_KEY_FROM_PATH (key_string, loc->path); - bfd->key = strdup (key_string); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bfd->key, out); - - BDB_SET_BFD (this, fd, bfd); - op_ret = 0; -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, fd); - - return 0; -} - -int32_t -bdb_readv (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - struct iovec vec = {0,}; - struct stat stbuf = {0,}; - struct bdb_fd *bfd = NULL; - dict_t *reply_dict = NULL; - char *buf = NULL; - data_t *buf_data = NULL; - char *db_path = NULL; - int32_t read_size = 0; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bfd->ctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - /* we are ready to go */ - op_ret = bdb_db_get (bfd->ctx, NULL, - bfd->key, &buf, - size, offset); - read_size = op_ret; - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to do db_storage_get()"); - op_ret = -1; - op_errno = ENOENT; - goto out; - } else if (op_ret == 0) { - goto out; - } - - buf_data = get_new_data (); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, buf_data, out); - - reply_dict = get_new_dict (); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, reply_dict, out); - - buf_data->data = buf; - - if (size < read_size) { - op_ret = size; - read_size = size; - } - - buf_data->len = op_ret; - - dict_set (reply_dict, NULL, buf_data); - - frame->root->rsp_refs = dict_ref (reply_dict); - - vec.iov_base = buf; - vec.iov_len = read_size; - - stbuf.st_ino = fd->inode->ino; - stbuf.st_size = op_ret ; - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - op_ret = size; -out: - STACK_UNWIND (frame, op_ret, op_errno, &vec, 1, &stbuf); - - if (reply_dict) - dict_unref (reply_dict); - - return 0; -} - - -int32_t -bdb_writev (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - struct iovec *vector, - int32_t count, - off_t offset) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - struct stat stbuf = {0,}; - struct bdb_fd *bfd = NULL; - int32_t idx = 0; - off_t c_off = offset; - int32_t c_ret = -1; - char *db_path = NULL; - size_t total_size = 0; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - GF_VALIDATE_OR_GOTO (this->name, vector, out); - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bfd->ctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - - for (idx = 0; idx < count; idx++) - total_size += vector[idx].iov_len; - - if (!is_space_left (this, total_size)) { - gf_log (this->name, - GF_LOG_ERROR, - "requested storage for %"GF_PRI_SIZET", ENOSPC", total_size); - op_ret = -1; - op_errno = ENOSPC; - goto out; - } - - - /* we are ready to go */ - for (idx = 0; idx < count; idx++) { - c_ret = bdb_db_put (bfd->ctx, NULL, - bfd->key, vector[idx].iov_base, - vector[idx].iov_len, c_off, 0); - if (c_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to do bdb_db_put at offset: %"PRIu64" for file: %s", - c_off, bfd->key); - break; - } else { - c_off += vector[idx].iov_len; - } - op_ret += vector[idx].iov_len; - } /* for(idx=0;...)... */ - - if (c_ret) { - /* write failed */ - gf_log (this->name, - GF_LOG_ERROR, - "failed to do bdb_db_put(): %s", - db_strerror (op_ret)); - op_ret = -1; - op_errno = EBADFD; /* TODO: search for a more meaningful errno */ - goto out; - } - /* NOTE: we want to increment stbuf->st_size, as stored in db */ - stbuf.st_size = op_ret; - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - op_errno = 0; - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - return 0; -} - -int32_t -bdb_flush (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - int32_t op_ret = -1; - int32_t op_errno = EPERM; - struct bdb_fd *bfd = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - /* do nothing */ - op_ret = 0; - op_errno = 0; - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -} - -int32_t -bdb_release (xlator_t *this, - fd_t *fd) -{ - int32_t op_ret = -1; - int32_t op_errno = EBADFD; - struct bdb_fd *bfd = NULL; - - if ((bfd = bdb_extract_bfd (fd, this)) == NULL){ - gf_log (this->name, - GF_LOG_ERROR, - "failed to extract %s specific information from fd:%p", this->name, fd); - op_ret = -1; - op_errno = EBADFD; - } else { - bctx_unref (bfd->ctx); - bfd->ctx = NULL; - - if (bfd->key) - free (bfd->key); /* we did strdup() in bdb_open() */ - free (bfd); - op_ret = 0; - op_errno = 0; - } /* if((fd->ctx == NULL)...)...else */ - - return 0; -}/* bdb_release */ - - -int32_t -bdb_fsync (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t datasync) -{ - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, 0, 0); - return 0; -}/* bdb_fsync */ - -static int gf_bdb_lk_log; - -int32_t -bdb_lk (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t cmd, - struct flock *lock) -{ - struct flock nullock = {0, }; - - gf_bdb_lk_log++; - if (!(gf_bdb_lk_log % GF_UNIVERSAL_ANSWER)) { - gf_log (this->name, GF_LOG_ERROR, - "\"features/posix-locks\" translator is not loaded, you need to use it"); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, -1, ENOSYS, &nullock); - return 0; -}/* bdb_lk */ - -/* bdb_lookup - * - * there are four possibilities for a file being looked up: - * 1. file exists and is a directory. - * 2. file exists and is a symlink. - * 3. file exists and is a regular file. - * 4. file does not exist. - * case 1 and 2 are handled by doing lstat() on the @loc. if the file is a directory or symlink, - * lstat() succeeds. lookup continues to check if the @loc belongs to case-3 only if lstat() fails. - * to check for case 3, bdb_lookup does a bdb_db_get() for the given @loc. (see description of - * bdb_db_get() for more details on how @loc is transformed into db handle and key). if check - * for case 1, 2 and 3 fail, we proceed to conclude that file doesn't exist (case 4). - * - * @frame: call frame. - * @this: xlator_t of this instance of bdb xlator. - * @loc: loc_t specifying the file to operate upon. - * @need_xattr: if need_xattr != 0, we are asked to return all the extended attributed of @loc, - * if any exist, in a dictionary. if @loc is a regular file and need_xattr is set, then - * we look for value of need_xattr. if need_xattr > sizo-of-the-file @loc, then the file - * content of @loc is returned in dictionary of xattr with 'glusterfs.content' as - * dictionary key. - * - * NOTE: bdb currently supports only directories, symlinks and regular files. - * - * NOTE: bdb_lookup returns the 'struct stat' of underlying file itself, in case of directory and - * symlink (st_ino is modified as bdb allocates its own set of inodes of all files). for - * regular files, bdb uses 'struct stat' of the database file in which the @loc is stored - * as templete and modifies st_ino (see bdb_inode_transform for more details), st_mode (can - * be set in volfile 'option file-mode <mode>'), st_size (exact size of the @loc - * contents), st_blocks (block count on the underlying filesystem to accomodate st_size, - * see BDB_COUNT_BLOCKS in bdb.h for more details). - */ -int32_t -bdb_lookup (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *xattr_req) -{ - struct stat stbuf = {0, }; - int32_t op_ret = -1; - int32_t op_errno = ENOENT; - dict_t *xattr = NULL; - char *pathname = NULL; - char *directory = NULL; - char *real_path = NULL; - bctx_t *bctx = NULL; - char *db_path = NULL; - struct bdb_private *private = NULL; - char *key_string = NULL; - int32_t entry_size = 0; - char *file_content = NULL; - data_t *file_content_data = NULL; - uint64_t need_xattr = 0; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - private = this->private; - - MAKE_REAL_PATH (real_path, this, loc->path); - - pathname = strdup (loc->path); - GF_VALIDATE_OR_GOTO (this->name, pathname, out); - - directory = dirname (pathname); - GF_VALIDATE_OR_GOTO (this->name, directory, out); - - if (!strcmp (directory, loc->path)) { - /* SPECIAL CASE: looking up root */ - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - /* bctx_lookup() returns NULL only when its time to wind up, - * we should shutdown functioning */ - bctx = bctx_lookup (B_TABLE(this), (char *)loc->path); - op_ret = -1; - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - stbuf.st_ino = 1; - stbuf.st_mode = private->dir_mode; - } else { - MAKE_KEY_FROM_PATH (key_string, loc->path); - op_ret = lstat (real_path, &stbuf); - if ((op_ret == 0) && (S_ISDIR (stbuf.st_mode))){ - bctx = bctx_lookup (B_TABLE(this), (char *)loc->path); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - if (loc->ino) { - /* revalidating directory inode */ - gf_log (this->name, - GF_LOG_DEBUG, - "revalidating directory %s", (char *)loc->path); - stbuf.st_ino = loc->ino; - } else { - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - } - stbuf.st_mode = private->dir_mode; - op_ret = 0; - op_errno = 0; - goto out; - } else if (op_ret == 0) { - /* a symlink */ - gf_log (this->name, - GF_LOG_DEBUG, - "lookup called for symlink: %s", loc->path); - bctx = bctx_parent (B_TABLE(this), loc->path); - op_ret = -1; - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - if (loc->ino) { - stbuf.st_ino = loc->ino; - } else { - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - } - stbuf.st_mode = private->symlink_mode; - op_ret = 0; - op_errno = 0; - goto out; - } - - /* for regular files */ - bctx = bctx_parent (B_TABLE(this), loc->path); - op_ret = -1; - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - if (GF_FILE_CONTENT_REQUESTED(xattr_req, &need_xattr)) { - entry_size = bdb_db_get (bctx, - NULL, - loc->path, - &file_content, - 0, 0); - } else { - entry_size = bdb_db_get (bctx, - NULL, - loc->path, - NULL, - 0, 0); - } - - op_ret = entry_size; - op_errno = ENOENT; - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_DEBUG, - "returning ENOENT for %s", loc->path); - goto out; - } - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - if ((need_xattr >= entry_size) - && (entry_size) && (file_content)) { - file_content_data = data_from_dynptr (file_content, - entry_size); - xattr = get_new_dict (); - dict_set (xattr, "glusterfs.content", - file_content_data); - } else { - if (file_content) - free (file_content); - } - - if (loc->ino) { - /* revalidate */ - stbuf.st_ino = loc->ino; - stbuf.st_size = entry_size; - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - } else { - /* fresh lookup, create an inode number */ - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - stbuf.st_size = entry_size; - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - }/* if(inode->ino)...else */ - stbuf.st_nlink = 1; - stbuf.st_mode = private->file_mode; - } - op_ret = 0; -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - if (pathname) - free (pathname); - - if (xattr) - dict_ref (xattr); - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf, xattr); - - if (xattr) - dict_unref (xattr); - - return 0; - -}/* bdb_lookup */ - -int32_t -bdb_stat (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - - struct stat stbuf = {0,}; - char *real_path = NULL; - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - struct bdb_private *private = NULL; - char *db_path = NULL; - bctx_t *bctx = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - private = this->private; - GF_VALIDATE_OR_GOTO (this->name, private, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret == 0) { - /* directory or symlink */ - stbuf.st_ino = loc->inode->ino; - if (S_ISDIR(stbuf.st_mode)) - stbuf.st_mode = private->dir_mode; - else - stbuf.st_mode = private->symlink_mode; - /* we are done, lets unwind the stack */ - goto out; - } - - bctx = bctx_parent (B_TABLE(this), loc->path); - op_ret = -1; - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - stbuf.st_size = bdb_db_get (bctx, NULL, loc->path, NULL, 0, 0); - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - stbuf.st_ino = loc->inode->ino; - -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - - return 0; -}/* bdb_stat */ - - - -/* bdb_opendir - in the world of bdb, open/opendir is all about opening correspondind databases. - * opendir in particular, opens the database for the directory which is - * to be opened. after opening the database, a cursor to the database is also created. - * cursor helps us get the dentries one after the other, and cursor maintains the state - * about current positions in directory. pack 'pointer to db', 'pointer to the - * cursor' into struct bdb_dir and store it in fd->ctx, we get from our parent xlator. - * - * @frame: call frame - * @this: our information, as we filled during init() - * @loc: location information - * @fd: file descriptor structure (glusterfs internal) - * - * return value - immaterial, async call. - * - */ -int32_t -bdb_opendir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - fd_t *fd) -{ - char *real_path = NULL; - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - bctx_t *bctx = NULL; - struct bdb_dir *bfd = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - bctx = bctx_lookup (B_TABLE(this), (char *)loc->path); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - bfd = CALLOC (1, sizeof (*bfd)); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - bfd->dir = opendir (real_path); - op_errno = errno; - GF_VALIDATE_OR_GOTO (this->name, bfd->dir, out); - - /* NOTE: bctx_lookup() return bctx with ref */ - bfd->ctx = bctx; - - bfd->path = strdup (real_path); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bfd->path, out); - - BDB_SET_BFD (this, fd, bfd); - op_ret = 0; -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, fd); - - return 0; -}/* bdb_opendir */ - - -int32_t -bdb_getdents (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t off, - int32_t flag) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - int32_t ret = -1; - int32_t real_path_len = 0; - int32_t entry_path_len = 0; - int32_t count = 0; - char *real_path = NULL; - char *entry_path = NULL; - char *db_path = NULL; - dir_entry_t entries = {0, }; - dir_entry_t *tmp = NULL; - DIR *dir = NULL; - struct dirent *dirent = NULL; - struct bdb_dir *bfd = NULL; - struct stat db_stbuf = {0,}; - struct stat buf = {0,}; - DBC *cursorp = NULL; - size_t tmp_name_len = 0; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - MAKE_REAL_PATH (real_path, this, bfd->path); - dir = bfd->dir; - - while ((dirent = readdir (dir))) { - if (!dirent) - break; - - if (IS_BDB_PRIVATE_FILE(dirent->d_name)) { - continue; - } - - tmp_name_len = strlen (dirent->d_name); - if (entry_path_len < (real_path_len + 1 + (tmp_name_len) + 1)) { - entry_path_len = real_path_len + tmp_name_len + 1024; - entry_path = realloc (entry_path, entry_path_len); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, entry_path, out); - } - - strncpy (&entry_path[real_path_len+1], dirent->d_name, tmp_name_len); - op_ret = stat (entry_path, &buf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - entry_path, strerror (op_errno)); - goto out; - } - - if ((flag == GF_GET_DIR_ONLY) && - (ret != -1 && !S_ISDIR(buf.st_mode))) { - continue; - } - - tmp = CALLOC (1, sizeof (*tmp)); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, tmp, out); - - tmp->name = strdup (dirent->d_name); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, dirent->d_name, out); - - memcpy (&tmp->buf, &buf, sizeof (buf)); - - tmp->buf.st_ino = -1; - if (S_ISLNK(tmp->buf.st_mode)) { - char linkpath[ZR_PATH_MAX] = {0,}; - ret = readlink (entry_path, linkpath, ZR_PATH_MAX); - if (ret != -1) { - linkpath[ret] = '\0'; - tmp->link = strdup (linkpath); - } - } else { - tmp->link = ""; - } - - count++; - - tmp->next = entries.next; - entries.next = tmp; - /* if size is 0, count can never be = size, so entire dir is read */ - - if (count == size) - break; - } - - if ((flag != GF_GET_DIR_ONLY) && (count < size)) { - /* read from db */ - op_ret = bdb_cursor_open (bfd->ctx, &cursorp); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, (op_ret == 0), out); - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bfd->ctx->directory); - op_ret = lstat (db_path, &db_stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - /* read all the entries in database, one after the other and put into dictionary */ - while (1) { - DBT key = {0,}, value = {0,}; - - key.flags = DB_DBT_MALLOC; - value.flags = DB_DBT_MALLOC; - op_ret = bdb_cursor_get (cursorp, &key, &value, DB_NEXT); - - if (op_ret == DB_NOTFOUND) { - gf_log (this->name, - GF_LOG_DEBUG, - "end of list of key/value pair in db for directory: %s", - bfd->ctx->directory); - op_ret = 0; - op_errno = 0; - break; - } else if (op_ret != 0){ - gf_log (this->name, - GF_LOG_ERROR, - "failed to do cursor get for directory %s: %s", - bfd->ctx->directory, db_strerror (op_ret)); - op_ret = -1; - op_errno = ENOENT; - break; - } - /* successfully read */ - tmp = CALLOC (1, sizeof (*tmp)); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, tmp, out); - - tmp->name = CALLOC (1, key.size + 1); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, tmp->name, out); - - memcpy (tmp->name, key.data, key.size); - tmp->buf = db_stbuf; - tmp->buf.st_size = bdb_db_get (bfd->ctx, NULL, - tmp->name, NULL, - 0, 0); - tmp->buf.st_blocks = BDB_COUNT_BLOCKS (tmp->buf.st_size, \ - tmp->buf.st_blksize); - /* FIXME: wat will be the effect of this? */ - tmp->buf.st_ino = -1; - count++; - - tmp->next = entries.next; - tmp->link = ""; - entries.next = tmp; - /* if size is 0, count can never be = size, so entire dir is read */ - if (count == size) - break; - - free (key.data); - } /* while(1){ } */ - bdb_cursor_close (bfd->ctx, cursorp); - } else { - /* do nothing */ - } - FREE (entry_path); - op_ret = 0; - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &entries, count); - - while (entries.next) { - tmp = entries.next; - entries.next = entries.next->next; - FREE (tmp->name); - FREE (tmp); - } - return 0; -}/* bdb_getdents */ - - -int32_t -bdb_releasedir (xlator_t *this, - fd_t *fd) -{ - int32_t op_ret = 0; - int32_t op_errno = 0; - struct bdb_dir *bfd = NULL; - - if ((bfd = bdb_extract_bfd (fd, this)) == NULL) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to extract fd data from fd=%p", fd); - op_ret = -1; - op_errno = EBADF; - } else { - if (bfd->path) { - free (bfd->path); - } else { - gf_log (this->name, GF_LOG_ERROR, "bfd->path was NULL. fd=%p bfd=%p", - fd, bfd); - } - - if (bfd->dir) { - closedir (bfd->dir); - } else { - gf_log (this->name, - GF_LOG_ERROR, - "bfd->dir is NULL."); - } - if (bfd->ctx) { - bctx_unref (bfd->ctx); - } else { - gf_log (this->name, - GF_LOG_ERROR, - "bfd->ctx is NULL"); - } - free (bfd); - } - - return 0; -}/* bdb_releasedir */ - - -int32_t -bdb_readlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - size_t size) -{ - char *dest = NULL; - int32_t op_ret = -1; - int32_t op_errno = EPERM; - char *real_path = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - dest = alloca (size + 1); - GF_VALIDATE_OR_GOTO (this->name, dest, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - op_ret = readlink (real_path, dest, size); - - if (op_ret > 0) - dest[op_ret] = 0; - - op_errno = errno; - - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_DEBUG, - "readlink failed on %s: %s", - loc->path, strerror (op_errno)); - } -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, dest); - - return 0; -}/* bdb_readlink */ - - -int32_t -bdb_mkdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - int32_t op_ret = -1; - int32_t ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - struct stat stbuf = {0, }; - bctx_t *bctx = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - op_ret = mkdir (real_path, mode); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to mkdir %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - op_ret = chown (real_path, frame->root->uid, frame->root->gid); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to chmod on %s (%s)", - real_path, strerror (op_errno)); - goto err; - } - - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto err; - } - - bctx = bctx_lookup (B_TABLE(this), (char *)loc->path); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, bctx, err); - - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - - goto out; - -err: - ret = rmdir (real_path); - if (ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to rmdir the directory created (%s)", - strerror (errno)); - } - - -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf); - - return 0; -}/* bdb_mkdir */ - - -int32_t -bdb_unlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - bctx_t *bctx = NULL; - char *real_path = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - bctx = bctx_parent (B_TABLE(this), loc->path); - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - op_ret = bdb_db_del (bctx, NULL, loc->path); - if (op_ret == DB_NOTFOUND) { - MAKE_REAL_PATH (real_path, this, loc->path); - op_ret = unlink (real_path); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to unlink on %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - } else if (op_ret == 0) { - op_errno = 0; - } -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno); - - return 0; -}/* bdb_unlink */ - - - -int32_t -bdb_do_rmdir (xlator_t *this, - loc_t *loc) -{ - char *real_path = NULL; - int32_t ret = -1; - bctx_t *bctx = NULL; - DB_ENV *dbenv = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - dbenv = BDB_ENV(this); - GF_VALIDATE_OR_GOTO (this->name, dbenv, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - bctx = bctx_lookup (B_TABLE(this), loc->path); - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - LOCK(&bctx->lock); - { - if (bctx->dbp == NULL) { - goto unlock; - } - - ret = bctx->dbp->close (bctx->dbp, 0); - GF_VALIDATE_OR_GOTO (this->name, (ret == 0), unlock); - - bctx->dbp = NULL; - - ret = dbenv->dbremove (dbenv, NULL, bctx->db_path, NULL, 0); - if (ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to DB_ENV->dbremove() on path %s: %s", - loc->path, db_strerror (ret)); - } - } -unlock: - UNLOCK(&bctx->lock); - - if (ret) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to remove db %s: %s", bctx->db_path, db_strerror (ret)); - ret = -1; - goto out; - } - gf_log (this->name, - GF_LOG_DEBUG, - "removed db %s", bctx->db_path); - ret = rmdir (real_path); - -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - return ret; -} - -int32_t -bdb_rmdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - int32_t op_ret = -1; - int32_t op_errno = ENOTEMPTY; - - if (!is_dir_empty (this, loc)) { - gf_log (this->name, - GF_LOG_DEBUG, - "rmdir: directory %s not empty", loc->path); - op_errno = ENOTEMPTY; - op_ret = -1; - goto out; - } - - op_ret = bdb_do_rmdir (this, loc); - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to bdb_do_rmdir on %s", - loc->path); - goto out; - } - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno); - - return 0; -} /* bdb_rmdir */ - -int32_t -bdb_symlink (call_frame_t *frame, - xlator_t *this, - const char *linkname, - loc_t *loc) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - struct stat stbuf = {0,}; - struct bdb_private *private = NULL; - bctx_t *bctx = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, linkname, out); - - private = this->private; - GF_VALIDATE_OR_GOTO (this->name, private, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - op_ret = symlink (linkname, real_path); - op_errno = errno; - if (op_ret == 0) { - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto err; - } - - bctx = bctx_parent (B_TABLE(this), loc->path); - GF_VALIDATE_OR_GOTO (this->name, bctx, err); - - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - stbuf.st_mode = private->symlink_mode; - - goto out; - } -err: - op_ret = unlink (real_path); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to unlink the previously created symlink (%s)", - strerror (op_errno)); - } - op_ret = -1; - op_errno = ENOENT; -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf); - - return 0; -} /* bdb_symlink */ - -int32_t -bdb_chmod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - struct stat stbuf = {0,}; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - /* directory or symlink */ - op_ret = chmod (real_path, mode); - op_errno = errno; - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - - return 0; -}/* bdb_chmod */ - - -int32_t -bdb_chown (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - uid_t uid, - gid_t gid) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - struct stat stbuf = {0,}; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - /* directory or symlink */ - op_ret = lchown (real_path, uid, gid); - op_errno = errno; -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - - return 0; -}/* bdb_chown */ - - -int32_t -bdb_truncate (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - off_t offset) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - struct stat stbuf = {0,}; - char *db_path = NULL; - bctx_t *bctx = NULL; - char *key_string = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - bctx = bctx_parent (B_TABLE(this), loc->path); - op_errno = ENOENT; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - MAKE_KEY_FROM_PATH (key_string, loc->path); - - /* now truncate */ - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - if (loc->inode->ino) { - stbuf.st_ino = loc->inode->ino; - }else { - stbuf.st_ino = bdb_inode_transform (stbuf.st_ino, bctx); - } - - op_ret = bdb_db_put (bctx, NULL, key_string, NULL, 0, 1, 0); - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_DEBUG, - "failed to do bdb_db_put: %s", - db_strerror (op_ret)); - op_ret = -1; - op_errno = EINVAL; /* TODO: better errno */ - } - -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - - return 0; -}/* bdb_truncate */ - - -int32_t -bdb_utimens (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - struct timespec ts[2]) -{ - int32_t op_ret = -1; - int32_t op_errno = EPERM; - char *real_path = NULL; - struct stat stbuf = {0,}; - struct timeval tv[2] = {{0,},}; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - op_errno = EPERM; - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - /* directory or symlink */ - tv[0].tv_sec = ts[0].tv_sec; - tv[0].tv_usec = ts[0].tv_nsec / 1000; - tv[1].tv_sec = ts[1].tv_sec; - tv[1].tv_usec = ts[1].tv_nsec / 1000; - - op_ret = lutimes (real_path, tv); - if (op_ret == -1 && errno == ENOSYS) { - op_ret = utimes (real_path, tv); - } - op_errno = errno; - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_WARNING, - "utimes on %s failed: %s", - loc->path, strerror (op_errno)); - goto out; - } - - op_ret = lstat (real_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - real_path, strerror (op_errno)); - goto out; - } - - stbuf.st_ino = loc->inode->ino; - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - - return 0; -}/* bdb_utimens */ - -int32_t -bdb_statfs (call_frame_t *frame, - xlator_t *this, - loc_t *loc) - -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - struct statvfs buf = {0, }; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - op_ret = statvfs (real_path, &buf); - op_errno = errno; -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &buf); - return 0; -}/* bdb_statfs */ - -static int gf_bdb_xattr_log; - -/* bdb_setxattr - set extended attributes. - * - * bdb allows setxattr operation only on directories. - * bdb reservers 'glusterfs.file.<attribute-name>' to operate on the content of the files - * under the specified directory. 'glusterfs.file.<attribute-name>' transforms to contents of - * file of name '<attribute-name>' under specified directory. - * - * @frame: call frame. - * @this: xlator_t of this instance of bdb xlator. - * @loc: loc_t specifying the file to operate upon. - * @dict: list of extended attributes to set on @loc. - * @flags: can be XATTR_REPLACE (replace an existing extended attribute only if it exists) or - * XATTR_CREATE (create an extended attribute only if it doesn't already exist). - * - * - */ -int32_t -bdb_setxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *dict, - int flags) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - data_pair_t *trav = dict->members_list; - bctx_t *bctx = NULL; - char *real_path = NULL; - char *key = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, dict, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - if (!S_ISDIR (loc->inode->st_mode)) { - op_ret = -1; - op_errno = EPERM; - goto out; - } - - while (trav) { - if (ZR_FILE_CONTENT_REQUEST(trav->key) ) { - bctx = bctx_lookup (B_TABLE(this), loc->path); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - key = &(trav->key[15]); - - if (flags & XATTR_REPLACE) { - /* replace only if previously exists, otherwise error out */ - op_ret = bdb_db_get (bctx, NULL, key, - NULL, 0, 0); - if (op_ret == -1) { - /* key doesn't exist in database */ - gf_log (this->name, - GF_LOG_DEBUG, - "cannot XATTR_REPLACE, xattr %s doesn't exist " - "on path %s", key, loc->path); - op_ret = -1; - op_errno = ENOENT; - break; - } - op_ret = bdb_db_put (bctx, NULL, - key, trav->value->data, - trav->value->len, - op_ret, BDB_TRUNCATE_RECORD); - if (op_ret != 0) { - op_ret = -1; - op_errno = EINVAL; - break; - } - } else { - /* fresh create */ - op_ret = bdb_db_put (bctx, NULL, key, - trav->value->data, - trav->value->len, - 0, 0); - if (op_ret != 0) { - op_ret = -1; - op_errno = EINVAL; - break; - } else { - op_ret = 0; - op_errno = 0; - } /* if(op_ret!=0)...else */ - } /* if(flags&XATTR_REPLACE)...else */ - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - } else { - /* do plain setxattr */ - op_ret = lsetxattr (real_path, - trav->key, - trav->value->data, - trav->value->len, - flags); - op_errno = errno; - if ((op_ret == -1) && (op_errno != ENOENT)) { - if (op_errno == ENOTSUP) { - gf_bdb_xattr_log++; - if (!(gf_bdb_xattr_log % GF_UNIVERSAL_ANSWER)) { - gf_log (this->name, GF_LOG_WARNING, - "Extended Attributes support not present."\ - "Please check"); - } - } else { - gf_log (this->name, GF_LOG_DEBUG, - "setxattr failed on %s (%s)", - loc->path, strerror (op_errno)); - } - break; - } - } /* if(ZR_FILE_CONTENT_REQUEST())...else */ - trav = trav->next; - }/* while(trav) */ -out: - frame->root->rsp_refs = NULL; - - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -}/* bdb_setxattr */ - - -/* bdb_gettxattr - get extended attributes. - * - * bdb allows getxattr operation only on directories. - * bdb_getxattr retrieves the whole content of the file, when glusterfs.file.<attribute-name> - * is specified. - * - * @frame: call frame. - * @this: xlator_t of this instance of bdb xlator. - * @loc: loc_t specifying the file to operate upon. - * @name: name of extended attributes to get for @loc. - * - * NOTE: see description of bdb_setxattr for details on how - * 'glusterfs.file.<attribute-name>' is handles by bdb. - */ -int32_t -bdb_getxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) -{ - int32_t op_ret = 0; - int32_t op_errno = 0; - dict_t *dict = NULL; - bctx_t *bctx = NULL; - char *buf = NULL; - char *key_string = NULL; - int32_t list_offset = 0; - size_t size = 0; - size_t remaining_size = 0; - char *real_path = NULL; - char key[1024] = {0,}; - char *value = NULL; - char *list = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, name, out); - - dict = get_new_dict (); - GF_VALIDATE_OR_GOTO (this->name, dict, out); - - if (!S_ISDIR (loc->inode->st_mode)) { - gf_log (this->name, - GF_LOG_DEBUG, - "operation not permitted on a non-directory file: %s", loc->path); - op_ret = -1; - op_errno = ENODATA; - goto out; - } - - if (name && ZR_FILE_CONTENT_REQUEST(name)) { - bctx = bctx_lookup (B_TABLE(this), loc->path); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - key_string = (char *)&(name[15]); - - op_ret = bdb_db_get (bctx, NULL, key_string, &buf, 0, 0); - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_DEBUG, - "failed to db get on directory: %s for key: %s", - bctx->directory, name); - op_ret = -1; - op_errno = ENODATA; - goto out; - } - - dict_set (dict, (char *)name, data_from_dynptr (buf, op_ret)); - } else { - MAKE_REAL_PATH (real_path, this, loc->path); - size = llistxattr (real_path, NULL, 0); - op_errno = errno; - if (size <= 0) { - /* There are no extended attributes, send an empty dictionary */ - if (size == -1 && op_errno != ENODATA) { - if (op_errno == ENOTSUP) { - gf_bdb_xattr_log++; - if (!(gf_bdb_xattr_log % GF_UNIVERSAL_ANSWER)) - gf_log (this->name, - GF_LOG_WARNING, - "Extended Attributes support not present."\ - "Please check"); - } else { - gf_log (this->name, - GF_LOG_WARNING, - "llistxattr failed on %s (%s)", - loc->path, strerror (op_errno)); - } - } - op_ret = -1; - op_errno = ENODATA; - } else { - list = alloca (size + 1); - op_errno = ENOMEM; - GF_VALIDATE_OR_GOTO (this->name, list, out); - - size = llistxattr (real_path, list, size); - op_ret = size; - op_errno = errno; - if (size == -1) { - gf_log (this->name, - GF_LOG_ERROR, - "llistxattr failed on %s (%s)", - loc->path, strerror (errno)); - goto out; - } - remaining_size = size; - list_offset = 0; - while (remaining_size > 0) { - if(*(list+list_offset) == '\0') - break; - strcpy (key, list + list_offset); - op_ret = lgetxattr (real_path, key, NULL, 0); - if (op_ret == -1) - break; - value = CALLOC (op_ret + 1, sizeof(char)); - GF_VALIDATE_OR_GOTO (this->name, value, out); - - op_ret = lgetxattr (real_path, key, value, op_ret); - if (op_ret == -1) - break; - value [op_ret] = '\0'; - dict_set (dict, key, data_from_dynptr (value, op_ret)); - remaining_size -= strlen (key) + 1; - list_offset += strlen (key) + 1; - } /* while(remaining_size>0) */ - } /* if(size <= 0)...else */ - } /* if(name...)...else */ - -out: - if(bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - if (dict) - dict_ref (dict); - - STACK_UNWIND (frame, op_ret, op_errno, dict); - - if (dict) - dict_unref (dict); - - return 0; -}/* bdb_getxattr */ - - -int32_t -bdb_removexattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - bctx_t *bctx = NULL; - char *real_path = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, name, out); - - if (!S_ISDIR(loc->inode->st_mode)) { - gf_log (this->name, - GF_LOG_WARNING, - "operation not permitted on non-directory files"); - op_ret = -1; - op_errno = EPERM; - goto out; - } - - if (ZR_FILE_CONTENT_REQUEST(name)) { - bctx = bctx_lookup (B_TABLE(this), loc->path); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - op_ret = bdb_db_del (bctx, NULL, name); - if (op_ret == -1) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to delete %s from db of %s directory", - name, loc->path); - op_errno = EINVAL; /* TODO: errno */ - goto out; - } - } else { - MAKE_REAL_PATH(real_path, this, loc->path); - op_ret = lremovexattr (real_path, name); - op_errno = errno; - if (op_ret == -1) { - if (op_errno == ENOTSUP) { - gf_bdb_xattr_log++; - if (!(gf_bdb_xattr_log % GF_UNIVERSAL_ANSWER)) - gf_log (this->name, GF_LOG_WARNING, - "Extended Attributes support not present." - "Please check"); - } else { - gf_log (this->name, - GF_LOG_WARNING, - "%s: %s", - loc->path, strerror (op_errno)); - } - } /* if(op_ret == -1) */ - } /* if (ZR_FILE_CONTENT_REQUEST(name))...else */ - -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -}/* bdb_removexattr */ - - -int32_t -bdb_fsyncdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int datasync) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - struct bdb_fd *bfd = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - frame->root->rsp_refs = NULL; - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - -out: - STACK_UNWIND (frame, op_ret, op_errno); - - return 0; -}/* bdb_fsycndir */ - - -int32_t -bdb_access (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t mask) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - char *real_path = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - op_ret = access (real_path, mask); - op_errno = errno; - /* TODO: implement for db entries */ -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno); - return 0; -}/* bdb_access */ - - -int32_t -bdb_ftruncate (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - off_t offset) -{ - int32_t op_ret = -1; - int32_t op_errno = EPERM; - struct stat buf = {0,}; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - /* TODO: impelement */ -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &buf); - - return 0; -} - -int32_t -bdb_fchown (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - uid_t uid, - gid_t gid) -{ - int32_t op_ret = -1; - int32_t op_errno = EPERM; - struct stat buf = {0,}; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - /* TODO: implement */ -out: - STACK_UNWIND (frame, op_ret, op_errno, &buf); - - return 0; -} - - -int32_t -bdb_fchmod (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - mode_t mode) -{ - int32_t op_ret = -1; - int32_t op_errno = EPERM; - struct stat buf = {0,}; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - /* TODO: impelement */ -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, &buf); - - return 0; -} - -int32_t -bdb_setdents (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags, - dir_entry_t *entries, - int32_t count) -{ - int32_t op_ret = -1, op_errno = EINVAL; - char *entry_path = NULL; - int32_t real_path_len = 0; - int32_t entry_path_len = 0; - int32_t ret = 0; - struct bdb_dir *bfd = NULL; - dir_entry_t *trav = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - GF_VALIDATE_OR_GOTO (this->name, entries, out); - - frame->root->rsp_refs = NULL; - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - real_path_len = strlen (bfd->path); - entry_path_len = real_path_len + 256; - entry_path = CALLOC (1, entry_path_len); - GF_VALIDATE_OR_GOTO (this->name, entry_path, out); - - strcpy (entry_path, bfd->path); - entry_path[real_path_len] = '/'; - - trav = entries->next; - while (trav) { - char pathname[ZR_PATH_MAX] = {0,}; - strcpy (pathname, entry_path); - strcat (pathname, trav->name); - - if (S_ISDIR(trav->buf.st_mode)) { - /* If the entry is directory, create it by calling 'mkdir'. If - * directory is not present, it will be created, if its present, - * no worries even if it fails. - */ - ret = mkdir (pathname, trav->buf.st_mode); - if ((ret == -1) && (errno != EEXIST)) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to created directory %s: %s", - pathname, strerror(errno)); - goto loop; - } - - gf_log (this->name, - GF_LOG_DEBUG, - "Creating directory %s with mode (0%o)", - pathname, - trav->buf.st_mode); - /* Change the mode - * NOTE: setdents tries its best to restore the state - * of storage. if chmod and chown fail, they can be - * ignored now */ - ret = chmod (pathname, trav->buf.st_mode); - if (ret != 0) { - op_ret = -1; - op_errno = errno; - gf_log (this->name, - GF_LOG_ERROR, - "chmod failed on %s (%s)", - pathname, strerror (errno)); - goto loop; - } - /* change the ownership */ - ret = chown (pathname, trav->buf.st_uid, trav->buf.st_gid); - if (ret != 0) { - op_ret = -1; - op_errno = errno; - gf_log (this->name, - GF_LOG_ERROR, - "chown failed on %s (%s)", - pathname, strerror (errno)); - goto loop; - } - } else if ((flags == GF_SET_IF_NOT_PRESENT) || - (flags != GF_SET_DIR_ONLY)) { - /* Create a 0 byte file here */ - if (S_ISREG (trav->buf.st_mode)) { - op_ret = bdb_db_put (bfd->ctx, NULL, - trav->name, NULL, 0, 0, 0); - if (op_ret != 0) { - /* create successful */ - gf_log (this->name, - GF_LOG_ERROR, - "failed to create file %s", - pathname); - } /* if (!op_ret)...else */ - } else if (S_ISLNK (trav->buf.st_mode)) { - /* TODO: impelement */; - } else { - gf_log (this->name, - GF_LOG_ERROR, - "storage/bdb allows to create regular files only" - "file %s (mode = %d) cannot be created", - pathname, trav->buf.st_mode); - } /* if(S_ISREG())...else */ - } /* if(S_ISDIR())...else if */ - loop: - /* consider the next entry */ - trav = trav->next; - } /* while(trav) */ - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno); - - FREE (entry_path); - return 0; -} - -int32_t -bdb_fstat (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - struct stat stbuf = {0,}; - struct bdb_fd *bfd = NULL; - bctx_t *bctx = NULL; - char *db_path = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - bctx = bfd->ctx; - - MAKE_REAL_PATH_TO_STORAGE_DB (db_path, this, bctx->directory); - op_ret = lstat (db_path, &stbuf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to lstat on %s (%s)", - db_path, strerror (op_errno)); - goto out; - } - - stbuf.st_ino = fd->inode->ino; - stbuf.st_size = bdb_db_get (bctx, NULL, bfd->key, NULL, 0, 0); - stbuf.st_blocks = BDB_COUNT_BLOCKS (stbuf.st_size, stbuf.st_blksize); - -out: - frame->root->rsp_refs = NULL; - - STACK_UNWIND (frame, op_ret, op_errno, &stbuf); - return 0; -} - - -int32_t -bdb_readdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t off) -{ - struct bdb_dir *bfd = NULL; - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - size_t filled = 0; - gf_dirent_t *this_entry = NULL; - gf_dirent_t entries; - struct dirent *entry = NULL; - off_t in_case = 0; - int32_t this_size = 0; - DBC *cursorp = NULL; - int32_t count = 0; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, fd, out); - - INIT_LIST_HEAD (&entries.list); - - bfd = bdb_extract_bfd (fd, this); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, bfd, out); - - op_errno = ENOMEM; - - while (filled <= size) { - this_entry = NULL; - entry = NULL; - in_case = 0; - this_size = 0; - - in_case = telldir (bfd->dir); - entry = readdir (bfd->dir); - if (!entry) - break; - - if (IS_BDB_PRIVATE_FILE(entry->d_name)) - continue; - - this_size = dirent_size (entry); - - if (this_size + filled > size) { - seekdir (bfd->dir, in_case); - break; - } - - count++; - - this_entry = gf_dirent_for_name (entry->d_name); - this_entry->d_ino = entry->d_ino; - - this_entry->d_off = -1; - - this_entry->d_type = entry->d_type; - this_entry->d_len = entry->d_reclen; - - - list_add (&this_entry->list, &entries.list); - - filled += this_size; - } - op_ret = filled; - op_errno = 0; - if (filled >= size) { - goto out; - } - - /* hungry kyaa? */ - op_ret = bdb_cursor_open (bfd->ctx, &cursorp); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, (op_ret == 0), out); - - /* TODO: fix d_off, don't use bfd->offset. wrong method */ - if (strlen (bfd->offset)) { - DBT key = {0,}, value = {0,}; - key.data = bfd->offset; - key.size = strlen (bfd->offset); - key.flags = DB_DBT_USERMEM; - value.dlen = 0; - value.doff = 0; - value.flags = DB_DBT_PARTIAL; - - op_ret = bdb_cursor_get (cursorp, &key, &value, DB_SET); - op_errno = EBADFD; - GF_VALIDATE_OR_GOTO (this->name, (op_ret == 0), out); - - } else { - /* first time or last time, do nothing */ - } - - while (filled <= size) { - DBT key = {0,}, value = {0,}; - this_entry = NULL; - - key.flags = DB_DBT_MALLOC; - value.dlen = 0; - value.doff = 0; - value.flags = DB_DBT_PARTIAL; - op_ret = bdb_cursor_get (cursorp, &key, &value, DB_NEXT); - - if (op_ret == DB_NOTFOUND) { - /* we reached end of the directory */ - op_ret = 0; - op_errno = 0; - break; - } else if (op_ret != 0) { - gf_log (this->name, - GF_LOG_DEBUG, - "database error during readdir"); - op_ret = -1; - op_errno = ENOENT; - break; - } /* if (op_ret == DB_NOTFOUND)...else if...else */ - - if (key.data == NULL) { - /* NOTE: currently ignore when we get key.data == NULL. - * TODO: we should not get key.data = NULL */ - gf_log (this->name, - GF_LOG_DEBUG, - "null key read from db"); - continue; - }/* if(key.data)...else */ - count++; - this_size = bdb_dirent_size (&key); - if (this_size + filled > size) - break; - /* TODO - consider endianness here */ - this_entry = gf_dirent_for_name ((const char *)key.data); - /* FIXME: bug, if someone is going to use ->d_ino */ - this_entry->d_ino = -1; - this_entry->d_off = 0; - this_entry->d_type = 0; - this_entry->d_len = key.size; - - if (key.data) { - strncpy (bfd->offset, key.data, key.size); - bfd->offset [key.size] = '\0'; - free (key.data); - } - - list_add (&this_entry->list, &entries.list); - - filled += this_size; - }/* while */ - bdb_cursor_close (bfd->ctx, cursorp); - op_ret = filled; - op_errno = 0; -out: - frame->root->rsp_refs = NULL; - gf_log (this->name, - GF_LOG_DEBUG, - "read %"GF_PRI_SIZET" bytes for %d entries", filled, count); - STACK_UNWIND (frame, count, op_errno, &entries); - - gf_dirent_free (&entries); - - return 0; -} - - -int32_t -bdb_stats (call_frame_t *frame, - xlator_t *this, - int32_t flags) - -{ - int32_t op_ret = 0; - int32_t op_errno = 0; - - struct xlator_stats xlstats = {0, }, *stats = NULL; - struct statvfs buf; - struct timeval tv; - struct bdb_private *private = NULL; - int64_t avg_read = 0; - int64_t avg_write = 0; - int64_t _time_ms = 0; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - - private = (struct bdb_private *)(this->private); - stats = &xlstats; - - op_ret = statvfs (private->export_path, &buf); - op_errno = errno; - if (op_ret != 0) { - gf_log (this->name, GF_LOG_ERROR, - "failed to statvfs on %s (%s)", - private->export_path, strerror (op_errno)); - goto out; - } - - stats->nr_files = private->stats.nr_files; - stats->nr_clients = private->stats.nr_clients; /* client info is maintained at FSd */ - stats->free_disk = buf.f_bfree * buf.f_bsize; /* Number of Free block in the filesystem. */ - stats->total_disk_size = buf.f_blocks * buf.f_bsize; /* */ - stats->disk_usage = (buf.f_blocks - buf.f_bavail) * buf.f_bsize; - - /* Calculate read and write usage */ - gettimeofday (&tv, NULL); - - /* Read */ - _time_ms = (tv.tv_sec - private->init_time.tv_sec) * 1000 + - ((tv.tv_usec - private->init_time.tv_usec) / 1000); - - avg_read = (_time_ms) ? (private->read_value / _time_ms) : 0; /* KBps */ - avg_write = (_time_ms) ? (private->write_value / _time_ms) : 0; /* KBps */ - - _time_ms = (tv.tv_sec - private->prev_fetch_time.tv_sec) * 1000 + - ((tv.tv_usec - private->prev_fetch_time.tv_usec) / 1000); - if (_time_ms && ((private->interval_read / _time_ms) > private->max_read)) { - private->max_read = (private->interval_read / _time_ms); - } - if (_time_ms && ((private->interval_write / _time_ms) > private->max_write)) { - private->max_write = private->interval_write / _time_ms; - } - - stats->read_usage = avg_read / private->max_read; - stats->write_usage = avg_write / private->max_write; - - gettimeofday (&(private->prev_fetch_time), NULL); - private->interval_read = 0; - private->interval_write = 0; - -out: - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, stats); - return 0; -} - - -int32_t -bdb_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int32_t cmd, struct flock *lock) -{ - frame->root->rsp_refs = NULL; - - gf_log (this->name, GF_LOG_CRITICAL, - "\"features/posix-locks\" translator is not loaded. You need to use it for proper functioning of GlusterFS"); - - STACK_UNWIND (frame, -1, ENOSYS); - return 0; -} - - -int32_t -bdb_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int32_t cmd, struct flock *lock) -{ - frame->root->rsp_refs = NULL; - - gf_log (this->name, GF_LOG_CRITICAL, - "\"features/posix-locks\" translator is not loaded. You need to use it for proper functioning of GlusterFS"); - - STACK_UNWIND (frame, -1, ENOSYS); - return 0; -} - - -int32_t -bdb_entrylk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, const char *basename, - entrylk_cmd cmd, entrylk_type type) -{ - frame->root->rsp_refs = NULL; - - gf_log (this->name, GF_LOG_CRITICAL, - "\"features/posix-locks\" translator is not loaded. You need to use it for proper functioning of GlusterFS"); - - STACK_UNWIND (frame, -1, ENOSYS); - return 0; -} - - -int32_t -bdb_fentrylk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, const char *basename, - entrylk_cmd cmd, entrylk_type type) -{ - frame->root->rsp_refs = NULL; - - gf_log (this->name, GF_LOG_CRITICAL, - "\"features/posix-locks\" translator is not loaded. You need to use it for proper functioning of GlusterFS"); - - STACK_UNWIND (frame, -1, ENOSYS); - return 0; -} - - -int32_t -bdb_checksum (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flag) -{ - char *real_path = NULL; - DIR *dir = NULL; - struct dirent *dirent = NULL; - uint8_t file_checksum[ZR_FILENAME_MAX] = {0,}; - uint8_t dir_checksum[ZR_FILENAME_MAX] = {0,}; - int32_t op_ret = -1; - int32_t op_errno = EINVAL; - int32_t i = 0, length = 0; - bctx_t *bctx = NULL; - DBC *cursorp = NULL; - char *data = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", frame, out); - GF_VALIDATE_OR_GOTO ("bdb", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - - MAKE_REAL_PATH (real_path, this, loc->path); - - { - dir = opendir (real_path); - op_errno = errno; - GF_VALIDATE_OR_GOTO (this->name, dir, out); - while ((dirent = readdir (dir))) { - if (!dirent) - break; - - if (IS_BDB_PRIVATE_FILE(dirent->d_name)) - continue; - - length = strlen (dirent->d_name); - for (i = 0; i < length; i++) - dir_checksum[i] ^= dirent->d_name[i]; - } /* while((dirent...)) */ - closedir (dir); - } - - { - bctx = bctx_lookup (B_TABLE(this), (char *)loc->path); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, bctx, out); - - op_ret = bdb_cursor_open (bctx, &cursorp); - op_errno = EINVAL; - GF_VALIDATE_OR_GOTO (this->name, (op_ret == 0), out); - - while (1) { - DBT key = {0,}, value = {0,}; - - key.flags = DB_DBT_MALLOC; - value.doff = 0; - value.dlen = 0; - op_ret = bdb_cursor_get (cursorp, &key, &value, DB_NEXT); - - if (op_ret == DB_NOTFOUND) { - gf_log (this->name, - GF_LOG_DEBUG, - "end of list of key/value pair in db for " - "directory: %s", bctx->directory); - op_ret = 0; - op_errno = 0; - break; - } else if (op_ret == 0){ - /* successfully read */ - data = key.data; - length = key.size; - for (i = 0; i < length; i++) - file_checksum[i] ^= data[i]; - - free (key.data); - } else { - gf_log (this->name, - GF_LOG_ERROR, - "failed to do cursor get for directory %s: %s", - bctx->directory, db_strerror (op_ret)); - op_ret = -1; - op_errno = ENOENT; - break; - }/* if(op_ret == DB_NOTFOUND)...else if...else */ - } /* while(1) */ - bdb_cursor_close (bctx, cursorp); - } -out: - if (bctx) { - /* NOTE: bctx_unref always returns success, - * see description of bctx_unref for more details */ - bctx_unref (bctx); - } - - frame->root->rsp_refs = NULL; - STACK_UNWIND (frame, op_ret, op_errno, file_checksum, dir_checksum); - - return 0; -} - -/** - * notify - when parent sends PARENT_UP, send CHILD_UP event from here - */ -int32_t -notify (xlator_t *this, - int32_t event, - void *data, - ...) -{ - switch (event) - { - case GF_EVENT_PARENT_UP: - { - /* Tell the parent that bdb xlator is up */ - assert ((this->private != NULL) && - (BDB_ENV(this) != NULL)); - default_notify (this, GF_EVENT_CHILD_UP, data); - } - break; - default: - /* */ - break; - } - return 0; -} - - - -/** - * init - - */ -int32_t -init (xlator_t *this) -{ - int32_t ret = -1; - struct stat buf = {0,}; - struct bdb_private *_private = NULL; - data_t *directory = NULL; - bctx_t *bctx = NULL; - - GF_VALIDATE_OR_GOTO ("bdb", this, out); - - _private = CALLOC (1, sizeof (*_private)); - GF_VALIDATE_OR_GOTO (this->name, _private, out); - - if (this->children) { - gf_log (this->name, - GF_LOG_ERROR, - "FATAL: storage/bdb cannot have subvolumes"); - FREE (_private); - goto out;; - } - - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "dangling volume. check volfile "); - } - - directory = dict_get (this->options, "directory"); - if (!directory) { - gf_log (this->name, GF_LOG_ERROR, - "export directory not specified in volfile"); - FREE (_private); - goto out; - } - umask (000); // umask `masking' is done at the client side - /* // * No need to create directory, sys admin should do it himself - if (mkdir (directory->data, 0777) == 0) { - gf_log (this->name, GF_LOG_WARNING, - "directory specified not exists, created"); - } - */ - - /* Check whether the specified directory exists, if not create it. */ - ret = stat (directory->data, &buf); - if ((ret != 0) || !S_ISDIR (buf.st_mode)) { - gf_log (this->name, GF_LOG_ERROR, - "specified directory '%s' doesn't exists, Exiting", directory->data); - FREE (_private); - goto out; - } else { - ret = 0; - } - - - _private->export_path = strdup (directory->data); - _private->export_path_length = strlen (_private->export_path); - - { - /* Stats related variables */ - gettimeofday (&_private->init_time, NULL); - gettimeofday (&_private->prev_fetch_time, NULL); - _private->max_read = 1; - _private->max_write = 1; - } - - this->private = (void *)_private; - { - ret = bdb_db_init (this, this->options); - - if (ret == -1){ - gf_log (this->name, - GF_LOG_DEBUG, - "failed to initialize database"); - goto out; - } else { - bctx = bctx_lookup (_private->b_table, "/"); - /* NOTE: we are not doing bctx_unref() for root bctx, - * let it remain in active list forever */ - if (!bctx) { - gf_log (this->name, - GF_LOG_ERROR, - "failed to allocate memory for root (/) bctx: out of memory"); - goto out; - } else { - ret = 0; - } - } - } -out: - return ret; -} - -void -bctx_cleanup (struct list_head *head) -{ - bctx_t *trav = NULL; - bctx_t *tmp = NULL; - DB *storage = NULL; - - list_for_each_entry_safe (trav, tmp, head, list) { - LOCK (&trav->lock); - storage = trav->dbp; - trav->dbp = NULL; - list_del_init (&trav->list); - UNLOCK (&trav->lock); - - if (storage) { - storage->close (storage, 0); - storage = NULL; - } - } - return; -} - -void -fini (xlator_t *this) -{ - struct bdb_private *private = NULL; - int32_t idx = 0; - int32_t ret = 0; - private = this->private; - - if (B_TABLE(this)) { - /* close all the dbs from lru list */ - bctx_cleanup (&(B_TABLE(this)->b_lru)); - for (idx = 0; idx < B_TABLE(this)->hash_size; idx++) - bctx_cleanup (&(B_TABLE(this)->b_hash[idx])); - - if (BDB_ENV(this)) { - LOCK (&private->active_lock); - private->active = 0; - UNLOCK (&private->active_lock); - - ret = pthread_join (private->checkpoint_thread, NULL); - if (ret != 0) { - gf_log (this->name, - GF_LOG_CRITICAL, - "failed to join checkpoint thread"); - } - - /* TODO: pick each of the 'struct bctx' from private->b_hash - * and close all the databases that are open */ - BDB_ENV(this)->close (BDB_ENV(this), 0); - } else { - /* impossible to reach here */ - } - - FREE (B_TABLE(this)); - } - FREE (private); - return; -} - -struct xlator_mops mops = { - .stats = bdb_stats, -}; - -struct xlator_fops fops = { - .lookup = bdb_lookup, - .stat = bdb_stat, - .opendir = bdb_opendir, - .readdir = bdb_readdir, - .readlink = bdb_readlink, - .mknod = bdb_mknod, - .mkdir = bdb_mkdir, - .unlink = bdb_unlink, - .rmdir = bdb_rmdir, - .symlink = bdb_symlink, - .rename = bdb_rename, - .link = bdb_link, - .chmod = bdb_chmod, - .chown = bdb_chown, - .truncate = bdb_truncate, - .utimens = bdb_utimens, - .create = bdb_create, - .open = bdb_open, - .readv = bdb_readv, - .writev = bdb_writev, - .statfs = bdb_statfs, - .flush = bdb_flush, - .fsync = bdb_fsync, - .setxattr = bdb_setxattr, - .getxattr = bdb_getxattr, - .removexattr = bdb_removexattr, - .fsyncdir = bdb_fsyncdir, - .access = bdb_access, - .ftruncate = bdb_ftruncate, - .fstat = bdb_fstat, - .lk = bdb_lk, - .inodelk = bdb_inodelk, - .finodelk = bdb_finodelk, - .entrylk = bdb_entrylk, - .fentrylk = bdb_fentrylk, - .fchown = bdb_fchown, - .fchmod = bdb_fchmod, - .setdents = bdb_setdents, - .getdents = bdb_getdents, - .checksum = bdb_checksum, -}; - -struct xlator_cbks cbks = { - .release = bdb_release, - .releasedir = bdb_releasedir -}; - -#if 0 -struct volume_options options[] = { - { "directory", GF_OPTION_TYPE_PATH, 0, }, - { "logdir", GF_OPTION_TYPE_PATH, 0, }, - { "errfile", GF_OPTION_TYPE_PATH, 0, }, - { "dir-mode", GF_OPTION_TYPE_ANY, 0, }, // base 8 number - { "file-mode", GF_OPTION_TYPE_ANY, 0, }, // base 8 number - { "page-size", GF_OPTION_TYPE_SIZET, -1, }, - { "lru-limit", GF_OPTION_TYPE_INT, -1, }, - { "lock-timeout", GF_OPTION_TYPE_TIME, 0, }, - { "checkpoint-timeout", GF_OPTION_TYPE_TIME, 0, }, - { "transaction-timeout", GF_OPTION_TYPE_TIME, 0, }, - { "mode", GF_OPTION_TYPE_BOOL, 0, }, // Should be 'cache' ?? - { "access-mode", GF_OPTION_TYPE_STR, 0, 0, 0, "btree"}, - { NULL, 0, } -}; - -#endif /* #if 0 */ |