diff options
Diffstat (limited to 'xlators/cluster/unify/src/unify.c')
| -rw-r--r-- | xlators/cluster/unify/src/unify.c | 4589 |
1 files changed, 0 insertions, 4589 deletions
diff --git a/xlators/cluster/unify/src/unify.c b/xlators/cluster/unify/src/unify.c deleted file mode 100644 index f3da6d0bac7..00000000000 --- a/xlators/cluster/unify/src/unify.c +++ /dev/null @@ -1,4589 +0,0 @@ -/* - Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.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/>. -*/ - -/** - * xlators/cluster/unify: - * - This xlator is one of the main translator in GlusterFS, which - * actually does the clustering work of the file system. One need to - * understand that, unify assumes file to be existing in only one of - * the child node, and directories to be present on all the nodes. - * - * NOTE: - * Now, unify has support for global namespace, which is used to keep a - * global view of fs's namespace tree. The stat for directories are taken - * just from the namespace, where as for files, just 'ia_ino' is taken from - * Namespace node, and other stat info is taken from the actual storage node. - * Also Namespace node helps to keep consistant inode for files across - * glusterfs (re-)mounts. - */ - -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#include "glusterfs.h" -#include "unify.h" -#include "dict.h" -#include "xlator.h" -#include "hashfn.h" -#include "logging.h" -#include "stack.h" -#include "defaults.h" -#include "common-utils.h" -#include <signal.h> -#include <libgen.h> -#include "compat-errno.h" -#include "compat.h" - -#define UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR(_loc) do { \ - if (!(_loc && _loc->inode)) { \ - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL); \ - return 0; \ - } \ -} while(0) - - -#define UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR(_fd) do { \ - if (!(_fd && !fd_ctx_get (_fd, this, NULL))) { \ - STACK_UNWIND (frame, -1, EBADFD, NULL, NULL); \ - return 0; \ - } \ -} while(0) - -#define UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(_fd) do { \ - if (!_fd) { \ - STACK_UNWIND (frame, -1, EBADFD, NULL, NULL); \ - return 0; \ - } \ -} while(0) - -/** - * unify_local_wipe - free all the extra allocation of local->* here. - */ -static void -unify_local_wipe (unify_local_t *local) -{ - /* Free the strdup'd variables in the local structure */ - if (local->name) { - GF_FREE (local->name); - } - loc_wipe (&local->loc1); - loc_wipe (&local->loc2); -} - - - -/* - * unify_normalize_stats - - */ -void -unify_normalize_stats (struct statvfs *buf, - unsigned long bsize, - unsigned long frsize) -{ - double factor; - - if (buf->f_bsize != bsize) { - factor = ((double) buf->f_bsize) / bsize; - buf->f_bsize = bsize; - buf->f_bfree = (fsblkcnt_t) (factor * buf->f_bfree); - buf->f_bavail = (fsblkcnt_t) (factor * buf->f_bavail); - } - - if (buf->f_frsize != frsize) { - factor = ((double) buf->f_frsize) / frsize; - buf->f_frsize = frsize; - buf->f_blocks = (fsblkcnt_t) (factor * buf->f_blocks); - } -} - - -xlator_t * -unify_loc_subvol (loc_t *loc, xlator_t *this) -{ - unify_private_t *priv = NULL; - xlator_t *subvol = NULL; - int16_t *list = NULL; - long index = 0; - xlator_t *subvol_i = NULL; - int ret = 0; - uint64_t tmp_list = 0; - - priv = this->private; - subvol = NS (this); - - if (!IA_ISDIR (loc->inode->ia_type)) { - ret = inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - if (!list) - goto out; - - for (index = 0; list[index] != -1; index++) { - subvol_i = priv->xl_array[list[index]]; - if (subvol_i != NS (this)) { - subvol = subvol_i; - break; - } - } - } -out: - return subvol; -} - - - -/** - * unify_statfs_cbk - - */ -int32_t -unify_statfs_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct statvfs *stbuf) -{ - int32_t callcnt = 0; - struct statvfs *dict_buf = NULL; - unsigned long bsize; - unsigned long frsize; - unify_local_t *local = (unify_local_t *)frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - if (op_ret >= 0) { - /* when a call is successfull, add it to local->dict */ - dict_buf = &local->statvfs_buf; - - if (dict_buf->f_bsize != 0) { - bsize = max (dict_buf->f_bsize, - stbuf->f_bsize); - - frsize = max (dict_buf->f_frsize, - stbuf->f_frsize); - unify_normalize_stats(dict_buf, bsize, frsize); - unify_normalize_stats(stbuf, bsize, frsize); - } else { - dict_buf->f_bsize = stbuf->f_bsize; - dict_buf->f_frsize = stbuf->f_frsize; - } - - dict_buf->f_blocks += stbuf->f_blocks; - dict_buf->f_bfree += stbuf->f_bfree; - dict_buf->f_bavail += stbuf->f_bavail; - dict_buf->f_files += stbuf->f_files; - dict_buf->f_ffree += stbuf->f_ffree; - dict_buf->f_favail += stbuf->f_favail; - dict_buf->f_fsid = stbuf->f_fsid; - dict_buf->f_flag = stbuf->f_flag; - dict_buf->f_namemax = stbuf->f_namemax; - local->op_ret = op_ret; - } else { - /* fop on storage node has failed due to some error */ - if (op_errno != ENOTCONN) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): %s", - prev_frame->this->name, - strerror (op_errno)); - } - local->op_errno = op_errno; - } - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->statvfs_buf); - } - - return 0; -} - -/** - * unify_statfs - - */ -int32_t -unify_statfs (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_local_t *local = NULL; - xlator_list_t *trav = this->children; - - INIT_LOCAL (frame, local); - local->call_count = ((unify_private_t *)this->private)->child_count; - - while(trav) { - STACK_WIND (frame, - unify_statfs_cbk, - trav->xlator, - trav->xlator->fops->statfs, - loc); - trav = trav->next; - } - - return 0; -} - -/** - * unify_buf_cbk - - */ -int32_t -unify_buf_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *buf) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "%s(): child(%s): path(%s): %s", - gf_fop_list[frame->root->op], - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - - local->op_errno = op_errno; - if ((op_errno == ENOENT) && priv->optimist) - local->op_ret = 0; - } - - if (op_ret >= 0) { - local->op_ret = 0; - - if (NS (this) == prev_frame->this) { - local->ia_ino = buf->ia_ino; - /* If the entry is directory, get the stat - from NS node */ - if (IA_ISDIR (buf->ia_type) || - !local->stbuf.ia_blksize) { - local->stbuf = *buf; - } - } - - if ((!IA_ISDIR (buf->ia_type)) && - (NS (this) != prev_frame->this)) { - /* If file, take the stat info from Storage - node. */ - local->stbuf = *buf; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - /* If the inode number is not filled, operation should - fail */ - if (!local->ia_ino) - local->op_ret = -1; - - local->stbuf.ia_ino = local->ia_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - - return 0; -} - -#define check_if_dht_linkfile(s) \ - ((st_mode_from_ia (s->ia_prot, s->ia_type) & ~S_IFMT) == S_ISVTX) - -/** - * unify_lookup_cbk - - */ -int32_t -unify_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - dict_t *dict, - struct iatt *postparent) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - inode_t *tmp_inode = NULL; - dict_t *local_dict = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - if (local->revalidate && - (op_errno == ESTALE)) { - /* ESTALE takes priority */ - local->op_errno = op_errno; - local->failed = 1; - } - - if ((op_errno != ENOTCONN) - && (op_errno != ENOENT) - && (local->op_errno != ESTALE)) { - /* if local->op_errno is already ESTALE, then - * ESTALE has to propogated to the parent first. - * do not enter here. - */ - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - - } else if (local->revalidate && - (local->op_errno != ESTALE) && - !(priv->optimist && (op_errno == ENOENT))) { - - gf_log (this->name, - (op_errno == ENOTCONN) ? - GF_LOG_DEBUG:GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - } - } - - if (op_ret == 0) { - local->op_ret = 0; - - if (check_if_dht_linkfile(buf)) { - gf_log (this->name, GF_LOG_CRITICAL, - "file %s may be DHT link file on %s, " - "make sure the backend is not shared " - "between unify and DHT", - local->loc1.path, - priv->xl_array[(long)cookie]->name); - } - - if (local->stbuf.ia_type && local->stbuf.ia_blksize) { - /* make sure we already have a stbuf - stored in local->stbuf */ - if (IA_ISDIR (local->stbuf.ia_type) && - !IA_ISDIR (buf->ia_type)) { - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] '%s' is directory " - "on namespace, non-directory " - "on node '%s', returning EIO", - local->loc1.path, - priv->xl_array[(long)cookie]->name); - local->return_eio = 1; - } - if (!IA_ISDIR (local->stbuf.ia_type) && - IA_ISDIR (buf->ia_type)) { - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] '%s' is directory " - "on node '%s', non-directory " - "on namespace, returning EIO", - local->loc1.path, - priv->xl_array[(long)cookie]->name); - local->return_eio = 1; - } - } - - if (!local->revalidate && !IA_ISDIR (buf->ia_type)) { - /* This is the first time lookup on file*/ - if (!local->list) { - /* list is not allocated, allocate - the max possible range */ - local->list = GF_CALLOC (1, 2 * (priv->child_count + 2), - gf_unify_mt_int16_t); - if (!local->list) { - gf_log (this->name, - GF_LOG_CRITICAL, - "Not enough memory"); - STACK_UNWIND (frame, -1, - ENOMEM, inode, - NULL, NULL, NULL); - return 0; - } - } - /* update the index of the list */ - local->list [local->index++] = - (int16_t)(long)cookie; - } - - if (!local->revalidate && IA_ISDIR (buf->ia_type)) { - /* fresh lookup of a directory */ - inode_ctx_put (local->loc1.inode, this, - priv->inode_generation); - } - - if ((!local->dict) && dict && - (priv->xl_array[(long)cookie] != NS(this))) { - local->dict = dict_ref (dict); - } - - /* index of NS node is == total child count */ - if (priv->child_count == (int16_t)(long)cookie) { - /* Take the inode number from namespace */ - local->ia_ino = buf->ia_ino; - if (IA_ISDIR (buf->ia_type) || - !(local->stbuf.ia_blksize)) { - local->stbuf = *buf; - local->oldpostparent = *postparent; - } - } else if (!IA_ISDIR (buf->ia_type)) { - /* If file, then get the stat from - storage node */ - local->stbuf = *buf; - } - - if (local->ia_nlink < buf->ia_nlink) { - local->ia_nlink = buf->ia_nlink; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local_dict = local->dict; - if (local->return_eio) { - gf_log (this->name, GF_LOG_CRITICAL, - "[CRITICAL] Unable to fix the path (%s) with " - "self-heal, try manual verification. " - "returning EIO.", local->loc1.path); - unify_local_wipe (local); - STACK_UNWIND (frame, -1, EIO, inode, NULL, NULL); - if (local_dict) { - dict_unref (local_dict); - } - return 0; - } - - if (!local->stbuf.ia_blksize) { - /* Inode not present */ - local->op_ret = -1; - } else { - if (!local->revalidate && - !IA_ISDIR (local->stbuf.ia_type)) { - /* If its a file, big array is useless, - allocate the smaller one */ - int16_t *list = NULL; - list = GF_CALLOC (1, 2 * (local->index + 1), - gf_unify_mt_int16_t); - ERR_ABORT (list); - memcpy (list, local->list, 2 * local->index); - /* Make the end of the list as -1 */ - GF_FREE (local->list); - local->list = list; - local->list [local->index] = -1; - /* Update the inode's ctx with proper array */ - /* TODO: log on failure */ - inode_ctx_put (local->loc1.inode, this, - (uint64_t)(long)local->list); - } - - if (IA_ISDIR(local->loc1.inode->ia_type)) { - /* lookup is done for directory */ - if (local->failed && priv->self_heal) { - /* Triggering self-heal */ - /* means, self-heal required for this - inode */ - local->inode_generation = 0; - priv->inode_generation++; - } - } else { - local->stbuf.ia_ino = local->ia_ino; - } - - local->stbuf.ia_nlink = local->ia_nlink; - } - if (local->op_ret == -1) { - if (!local->revalidate && local->list) - GF_FREE (local->list); - } - - if ((local->op_ret >= 0) && local->failed && - local->revalidate) { - /* Done revalidate, but it failed */ - if ((op_errno != ENOTCONN) - && (local->op_errno != ESTALE)) { - gf_log (this->name, GF_LOG_ERROR, - "Revalidate failed for path(%s): %s", - local->loc1.path, strerror (op_errno)); - } - local->op_ret = -1; - } - - if ((priv->self_heal && !priv->optimist) && - (!local->revalidate && (local->op_ret == 0) && - IA_ISDIR(local->stbuf.ia_type))) { - /* Let the self heal be done here */ - zr_unify_self_heal (frame, this, local); - local_dict = NULL; - } else { - if (local->failed) { - /* NOTE: directory lookup is sent to all - * subvolumes and success from a subvolume - * might set local->op_ret to 0 (zero) */ - local->op_ret = -1; - } - - /* either no self heal, or op_ret == -1 (failure) */ - tmp_inode = local->loc1.inode; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - tmp_inode, &local->stbuf, local->dict, - &local->oldpostparent); - } - if (local_dict) { - dict_unref (local_dict); - } - } - - return 0; -} - -/** - * unify_lookup - - */ -int32_t -unify_lookup (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *xattr_req) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int16_t *list = NULL; - long index = 0; - - if (!(loc && loc->inode)) { - gf_log (this->name, GF_LOG_ERROR, - "%s: Argument not right", loc?loc->path:"(null)"); - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL, NULL); - return 0; - } - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, loc->inode, NULL, NULL, NULL); - return 0; - } - - if (inode_ctx_get (loc->inode, this, NULL) - && IA_ISDIR (loc->inode->ia_type)) { - local->revalidate = 1; - } - - if (!inode_ctx_get (loc->inode, this, NULL) && - loc->inode->ia_type && - !IA_ISDIR (loc->inode->ia_type)) { - uint64_t tmp_list = 0; - /* check if revalidate or fresh lookup */ - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - } - - if (local->list) { - list = local->list; - for (index = 0; list[index] != -1; index++); - if (index != 2) { - if (index < 2) { - gf_log (this->name, GF_LOG_ERROR, - "returning ESTALE for %s: file " - "count is %ld", loc->path, index); - /* Print where all the file is present */ - for (index = 0; - local->list[index] != -1; index++) { - gf_log (this->name, GF_LOG_ERROR, - "%s: found on %s", loc->path, - priv->xl_array[list[index]]->name); - } - unify_local_wipe (local); - STACK_UNWIND (frame, -1, ESTALE, - NULL, NULL, NULL, NULL); - return 0; - } else { - /* There are more than 2 presences */ - /* Just log and continue */ - gf_log (this->name, GF_LOG_ERROR, - "%s: file count is %ld", - loc->path, index); - /* Print where all the file is present */ - for (index = 0; - local->list[index] != -1; index++) { - gf_log (this->name, GF_LOG_ERROR, - "%s: found on %s", loc->path, - priv->xl_array[list[index]]->name); - } - } - } - - /* is revalidate */ - local->revalidate = 1; - - for (index = 0; list[index] != -1; index++) - local->call_count++; - - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_lookup_cbk, - (void *)(long)list[index], //cookie - priv->xl_array [list[index]], - priv->xl_array [list[index]]->fops->lookup, - loc, - xattr_req); - if (need_break) - break; - } - } else { - if (loc->inode->ia_type) { - if (inode_ctx_get (loc->inode, this, NULL)) { - inode_ctx_get (loc->inode, this, - &local->inode_generation); - } - } - /* This is first call, there is no list */ - /* call count should be all child + 1 namespace */ - local->call_count = priv->child_count + 1; - - for (index = 0; index <= priv->child_count; index++) { - STACK_WIND_COOKIE (frame, - unify_lookup_cbk, - (void *)index, //cookie - priv->xl_array[index], - priv->xl_array[index]->fops->lookup, - loc, - xattr_req); - } - } - - return 0; -} - -/** - * unify_stat - if directory, get the stat directly from NameSpace child. - * if file, check for a hint and send it only there (also to NS). - * if its a fresh stat, then do it on all the nodes. - * - * NOTE: for all the call, sending cookie as xlator pointer, which will be - * used in cbk. - */ -int32_t -unify_stat (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int16_t index = 0; - int16_t *list = NULL; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL); - return 0; - } - local->ia_ino = loc->inode->ino; - if (IA_ISDIR (loc->inode->ia_type)) { - /* Directory */ - local->call_count = 1; - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->stat, loc); - } else { - /* File */ - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) - local->call_count++; - - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - STACK_WIND (frame, - unify_buf_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->stat, - loc); - if (need_break) - break; - } - } - - return 0; -} - -/** - * unify_access_cbk - - */ -int32_t -unify_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; -} - - -/** - * unify_access - Send request to only namespace, which has all the - * attributes set for the file. - */ -int32_t -unify_access (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t mask) -{ - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - STACK_WIND (frame, - unify_access_cbk, - NS(this), - NS(this)->fops->access, - loc, - mask); - - return 0; -} - -int32_t -unify_mkdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - inode_t *tmp_inode = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if ((op_ret == -1) && !(priv->optimist && - (op_errno == ENOENT || - op_errno == EEXIST))) { - /* TODO: Decrement the inode_generation of - * this->inode's parent inode, hence the missing - * directory is created properly by self-heal. - * Currently, there is no way to get the parent - * inode directly. - */ - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - if (op_errno != EEXIST) - local->failed = 1; - local->op_errno = op_errno; - } - - if (op_ret >= 0) - local->op_ret = 0; - - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (!local->failed) { - inode_ctx_put (local->loc1.inode, this, - priv->inode_generation); - } - - tmp_inode = local->loc1.inode; - unify_local_wipe (local); - - STACK_UNWIND (frame, local->op_ret, local->op_errno, - tmp_inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - } - - return 0; -} - -/** - * unify_ns_mkdir_cbk - - */ -int32_t -unify_ns_mkdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - long index = 0; - - if (op_ret == -1) { - /* No need to send mkdir request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s): %s", - local->name, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, NULL, - NULL, NULL); - return 0; - } - - /* Create one inode for this entry */ - local->op_ret = 0; - local->stbuf = *buf; - - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - - local->call_count = priv->child_count; - - /* Send mkdir request to all the nodes now */ - for (index = 0; index < priv->child_count; index++) { - STACK_WIND_COOKIE (frame, - unify_mkdir_cbk, - (void *)index, //cookie - priv->xl_array[index], - priv->xl_array[index]->fops->mkdir, - &local->loc1, - local->mode); - } - - return 0; -} - - -/** - * unify_mkdir - - */ -int32_t -unify_mkdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - local->mode = mode; - - loc_copy (&local->loc1, loc); - - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_mkdir_cbk, - NS(this), - NS(this)->fops->mkdir, - loc, - mode); - return 0; -} - -/** - * unify_rmdir_cbk - - */ -int32_t -unify_rmdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == 0 || (priv->optimist && (op_errno == ENOENT))) - local->op_ret = 0; - if (op_ret == -1) - local->op_errno = op_errno; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->oldpreparent, &local->oldpostparent); - } - - return 0; -} - -/** - * unify_ns_rmdir_cbk - - */ -int32_t -unify_ns_rmdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - if (op_ret == -1) { - /* No need to send rmdir request to other servers, - * as namespace action failed - */ - gf_log (this->name, - ((op_errno != ENOTEMPTY) ? - GF_LOG_ERROR : GF_LOG_DEBUG), - "namespace: path(%s): %s", - local->loc1.path, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, NULL, NULL); - return 0; - } - - local->call_count = priv->child_count; - - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - - for (index = 0; index < priv->child_count; index++) { - STACK_WIND (frame, - unify_rmdir_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->rmdir, - &local->loc1); - } - - return 0; -} - -/** - * unify_rmdir - - */ -int32_t -unify_rmdir (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_local_t *local = NULL; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_rmdir_cbk, - NS(this), - NS(this)->fops->rmdir, - loc); - - return 0; -} - -/** - * unify_open_cbk - - */ -int32_t -unify_open_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - if (op_ret >= 0) { - local->op_ret = op_ret; - if (NS(this) != (xlator_t *)cookie) { - /* Store child node's ptr, used in - all the f*** / FileIO calls */ - fd_ctx_set (fd, this, (uint64_t)(long)cookie); - } - } - if (op_ret == -1) { - local->op_errno = op_errno; - local->failed = 1; - } - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if ((local->failed == 1) && (local->op_ret >= 0)) { - local->call_count = 1; - /* return -1 to user */ - local->op_ret = -1; - //local->op_errno = EIO; - - if (!fd_ctx_get (local->fd, this, NULL)) { - gf_log (this->name, GF_LOG_ERROR, - "Open success on child node, " - "failed on namespace"); - } else { - gf_log (this->name, GF_LOG_ERROR, - "Open success on namespace, " - "failed on child node"); - } - } - - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - } - - return 0; -} - -#ifdef GF_DARWIN_HOST_OS -/** - * unify_create_lookup_cbk - - */ -int32_t -unify_open_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - dict_t *dict, - struct iatt *postparent) -{ - int32_t callcnt = 0; - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if ((op_ret == -1) && (op_errno != ENOENT)) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - local->index++; - if (NS(this) == priv->xl_array[(long)cookie]) { - local->list[0] = (int16_t)(long)cookie; - } else { - local->list[1] = (int16_t)(long)cookie; - } - if (IA_ISDIR (buf->ia_type)) - local->failed = 1; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - int16_t file_list[3] = {0,}; - local->op_ret = -1; - - file_list[0] = local->list[0]; - file_list[1] = local->list[1]; - file_list[2] = -1; - - if (local->index != 2) { - /* Lookup failed, can't do open */ - gf_log (this->name, GF_LOG_ERROR, - "%s: present on %d nodes", - local->name, local->index); - - if (local->index < 2) { - unify_local_wipe (local); - gf_log (this->name, GF_LOG_ERROR, - "returning as file found on less " - "than 2 nodes"); - STACK_UNWIND (frame, local->op_ret, - local->op_errno, local->fd); - return 0; - } - } - - if (local->failed) { - /* Open on directory, return EISDIR */ - unify_local_wipe (local); - STACK_UNWIND (frame, -1, EISDIR, local->fd); - return 0; - } - - /* Everything is perfect :) */ - local->call_count = 2; - - for (index = 0; file_list[index] != -1; index++) { - char need_break = (file_list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_open_cbk, - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]]->fops->open, - &local->loc1, - local->flags, - local->fd, local->wbflags); - if (need_break) - break; - } - } - - return 0; -} - - -int32_t -unify_open_readlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - const char *path, - struct iatt *sbuf) -{ - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - if (op_ret == -1) { - STACK_UNWIND (frame, -1, ENOENT); - return 0; - } - - if (path[0] == '/') { - local->name = gf_strdup (path); - ERR_ABORT (local->name); - } else { - char *tmp_str = gf_strdup (local->loc1.path); - char *tmp_base = dirname (tmp_str); - local->name = GF_CALLOC (1, PATH_MAX, gf_unify_mt_char); - strcpy (local->name, tmp_base); - strncat (local->name, "/", 1); - strcat (local->name, path); - GF_FREE (tmp_str); - } - - local->list = GF_CALLOC (1, sizeof (int16_t) * 3, - gf_unify_mt_int16_t); - ERR_ABORT (local->list); - local->call_count = priv->child_count + 1; - local->op_ret = -1; - for (index = 0; index <= priv->child_count; index++) { - /* Send the lookup to all the nodes including namespace */ - STACK_WIND_COOKIE (frame, - unify_open_lookup_cbk, - (void *)(long)index, - priv->xl_array[index], - priv->xl_array[index]->fops->lookup, - &local->loc1, - NULL); - } - - return 0; -} -#endif /* GF_DARWIN_HOST_OS */ - -/** - * unify_open - - */ -int32_t -unify_open (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - fd_t *fd, - int32_t wbflags) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - int16_t file_list[3] = {0,}; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Init */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->fd = fd; - local->flags = flags; - local->wbflags = wbflags; - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - local->list = list; - file_list[0] = priv->child_count; /* Thats namespace */ - file_list[2] = -1; - for (index = 0; list[index] != -1; index++) { - local->call_count++; - if (list[index] != priv->child_count) - file_list[1] = list[index]; - } - - if (local->call_count != 2) { - /* If the lookup was done for file */ - gf_log (this->name, GF_LOG_ERROR, - "%s: entry_count is %d", - loc->path, local->call_count); - for (index = 0; local->list[index] != -1; index++) - gf_log (this->name, GF_LOG_ERROR, "%s: found on %s", - loc->path, priv->xl_array[list[index]]->name); - - if (local->call_count < 2) { - gf_log (this->name, GF_LOG_ERROR, - "returning EIO as file found on onlyone node"); - STACK_UNWIND (frame, -1, EIO, fd); - return 0; - } - } - -#ifdef GF_DARWIN_HOST_OS - /* Handle symlink here */ - if (IA_ISLNK (loc->inode->ia_type)) { - /* Callcount doesn't matter here */ - STACK_WIND (frame, - unify_open_readlink_cbk, - NS(this), - NS(this)->fops->readlink, - loc, PATH_MAX); - return 0; - } -#endif /* GF_DARWIN_HOST_OS */ - - local->call_count = 2; - for (index = 0; file_list[index] != -1; index++) { - char need_break = (file_list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_open_cbk, - priv->xl_array[file_list[index]], //cookie - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]]->fops->open, - loc, - flags, - fd, wbflags); - if (need_break) - break; - } - - return 0; -} - - -int32_t -unify_create_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_local_t *local = frame->local; - inode_t *inode = local->loc1.inode; - - unify_local_wipe (local); - - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->fd, - inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - - return 0; -} - -/** - * unify_create_open_cbk - - */ -int32_t -unify_create_open_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - int ret = 0; - int32_t callcnt = 0; - unify_local_t *local = frame->local; - inode_t *inode = NULL; - xlator_t *child = NULL; - uint64_t tmp_value = 0; - - LOCK (&frame->lock); - { - if (op_ret >= 0) { - local->op_ret = op_ret; - if (NS(this) != (xlator_t *)cookie) { - /* Store child node's ptr, used in all - the f*** / FileIO calls */ - /* TODO: log on failure */ - ret = fd_ctx_get (fd, this, &tmp_value); - cookie = (void *)(long)tmp_value; - } else { - /* NOTE: open successful on namespace. - * fd's ctx can be used to identify open - * failure on storage subvolume. cool - * ide ;) */ - local->failed = 0; - } - } else { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - ((xlator_t *)cookie)->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - } - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed == 1 && (local->op_ret >= 0)) { - local->call_count = 1; - /* return -1 to user */ - local->op_ret = -1; - local->op_errno = EIO; - local->fd = fd; - local->call_count = 1; - - if (!fd_ctx_get (local->fd, this, &tmp_value)) { - child = (xlator_t *)(long)tmp_value; - - gf_log (this->name, GF_LOG_ERROR, - "Create success on child node, " - "failed on namespace"); - - STACK_WIND (frame, - unify_create_unlink_cbk, - child, - child->fops->unlink, - &local->loc1); - } else { - gf_log (this->name, GF_LOG_ERROR, - "Create success on namespace, " - "failed on child node"); - - STACK_WIND (frame, - unify_create_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - } - return 0; - } - inode = local->loc1.inode; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, fd, - inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - } - return 0; -} - -/** - * unify_create_lookup_cbk - - */ -int32_t -unify_create_lookup_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - dict_t *dict, - struct iatt *postparent) -{ - int32_t callcnt = 0; - int16_t index = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - priv->xl_array[(long)cookie]->name, - local->loc1.path, strerror (op_errno)); - local->op_errno = op_errno; - local->failed = 1; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - local->list[local->index++] = (int16_t)(long)cookie; - if (NS(this) == priv->xl_array[(long)cookie]) { - local->ia_ino = buf->ia_ino; - } else { - local->stbuf = *buf; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - int16_t *list = local->list; - int16_t file_list[3] = {0,}; - local->op_ret = -1; - - local->list [local->index] = -1; - file_list[0] = list[0]; - file_list[1] = list[1]; - file_list[2] = -1; - - local->stbuf.ia_ino = local->ia_ino; - /* TODO: log on failure */ - inode_ctx_put (local->loc1.inode, this, - (uint64_t)(long)local->list); - - if (local->index != 2) { - /* Lookup failed, can't do open */ - gf_log (this->name, GF_LOG_ERROR, - "%s: present on %d nodes", - local->loc1.path, local->index); - file_list[0] = priv->child_count; - for (index = 0; list[index] != -1; index++) { - gf_log (this->name, GF_LOG_ERROR, - "%s: found on %s", local->loc1.path, - priv->xl_array[list[index]]->name); - if (list[index] != priv->child_count) - file_list[1] = list[index]; - } - - if (local->index < 2) { - unify_local_wipe (local); - gf_log (this->name, GF_LOG_ERROR, - "returning EIO as file found on " - "only one node"); - STACK_UNWIND (frame, -1, EIO, - local->fd, inode, NULL, - NULL, NULL); - return 0; - } - } - /* Everything is perfect :) */ - local->call_count = 2; - - for (index = 0; file_list[index] != -1; index++) { - char need_break = (file_list[index+1] == -1); - STACK_WIND_COOKIE (frame, - unify_create_open_cbk, - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]], - priv->xl_array[file_list[index]]->fops->open, - &local->loc1, - local->flags, - local->fd, 0); - if (need_break) - break; - } - } - - return 0; -} - - -/** - * unify_create_cbk - - */ -int32_t -unify_create_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - int ret = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - inode_t *tmp_inode = NULL; - - if (op_ret == -1) { - /* send unlink () on Namespace */ - local->op_errno = op_errno; - local->op_ret = -1; - local->call_count = 1; - gf_log (this->name, GF_LOG_ERROR, - "create failed on %s (file %s, error %s), " - "sending unlink to namespace", - prev_frame->this->name, - local->loc1.path, strerror (op_errno)); - - STACK_WIND (frame, - unify_create_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - if (op_ret >= 0) { - local->op_ret = op_ret; - local->stbuf = *buf; - /* Just inode number should be from NS node */ - local->stbuf.ia_ino = local->ia_ino; - - /* TODO: log on failure */ - ret = fd_ctx_set (fd, this, (uint64_t)(long)prev_frame->this); - } - - tmp_inode = local->loc1.inode; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, local->fd, - tmp_inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - - return 0; -} - -/** - * unify_ns_create_cbk - - * - */ -int32_t -unify_ns_create_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - struct sched_ops *sched_ops = NULL; - xlator_t *sched_xl = NULL; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t *list = NULL; - int16_t index = 0; - - if (op_ret == -1) { - /* No need to send create request to other servers, as - namespace action failed. Handle exclusive create here. */ - if ((op_errno != EEXIST) || - ((op_errno == EEXIST) && - ((local->flags & O_EXCL) == O_EXCL))) { - /* If its just a create call without O_EXCL, - don't do this */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s): %s", - local->loc1.path, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf, - preparent, postparent); - return 0; - } - } - - if (op_ret >= 0) { - /* Get the inode number from the NS node */ - local->ia_ino = buf->ia_ino; - - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - - local->op_ret = -1; - - /* Start the mapping list */ - list = GF_CALLOC (1, sizeof (int16_t) * 3, - gf_unify_mt_int16_t); - ERR_ABORT (list); - inode_ctx_put (inode, this, (uint64_t)(long)list); - list[0] = priv->child_count; - list[2] = -1; - - /* This means, file doesn't exist anywhere in the Filesystem */ - sched_ops = priv->sched_ops; - - /* Send create request to the scheduled node now */ - sched_xl = sched_ops->schedule (this, local->loc1.path); - if (sched_xl == NULL) - { - /* send unlink () on Namespace */ - local->op_errno = ENOTCONN; - local->op_ret = -1; - local->call_count = 1; - gf_log (this->name, GF_LOG_ERROR, - "no node online to schedule create:(file %s) " - "sending unlink to namespace", - (local->loc1.path)?local->loc1.path:""); - - STACK_WIND (frame, - unify_create_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - for (index = 0; index < priv->child_count; index++) - if (sched_xl == priv->xl_array[index]) - break; - list[1] = index; - - STACK_WIND (frame, unify_create_cbk, - sched_xl, sched_xl->fops->create, - &local->loc1, local->flags, local->mode, fd); - } else { - /* File already exists, and there is no O_EXCL flag */ - - gf_log (this->name, GF_LOG_DEBUG, - "File(%s) already exists on namespace, sending " - "open instead", local->loc1.path); - - local->list = GF_CALLOC (1, sizeof (int16_t) * 3, - gf_unify_mt_int16_t); - ERR_ABORT (local->list); - local->call_count = priv->child_count + 1; - local->op_ret = -1; - for (index = 0; index <= priv->child_count; index++) { - /* Send lookup() to all nodes including namespace */ - STACK_WIND_COOKIE (frame, - unify_create_lookup_cbk, - (void *)(long)index, - priv->xl_array[index], - priv->xl_array[index]->fops->lookup, - &local->loc1, - NULL); - } - } - return 0; -} - -/** - * unify_create - create a file in global namespace first, so other - * clients can see them. Create the file in storage nodes in background. - */ -int32_t -unify_create (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flags, - mode_t mode, - fd_t *fd) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - local->mode = mode; - local->flags = flags; - local->fd = fd; - - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, fd, loc->inode, NULL, - NULL, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_create_cbk, - NS(this), - NS(this)->fops->create, - loc, - flags | O_EXCL, - mode, - fd); - - return 0; -} - - -/** - * unify_opendir_cbk - - */ -int32_t -unify_opendir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - fd_t *fd) -{ - STACK_UNWIND (frame, op_ret, op_errno, fd); - - return 0; -} - -/** - * unify_opendir - - */ -int32_t -unify_opendir (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - fd_t *fd) -{ - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - STACK_WIND (frame, unify_opendir_cbk, - NS(this), NS(this)->fops->opendir, loc, fd); - - return 0; -} - - -int32_t -unify_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, struct iatt *statpre, - struct iatt *statpost) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "%s(): child(%s): path(%s): %s", - gf_fop_list[frame->root->op], - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - - local->op_errno = op_errno; - if ((op_errno == ENOENT) && priv->optimist) - local->op_ret = 0; - } - - if (op_ret >= 0) { - local->op_ret = 0; - - if (NS (this) == prev_frame->this) { - local->ia_ino = statpost->ia_ino; - /* If the entry is directory, get the stat - from NS node */ - if (IA_ISDIR (statpost->ia_type) || - !local->stpost.ia_blksize) { - local->stpre = *statpre; - local->stpost = *statpost; - } - } - - if ((!IA_ISDIR (statpost->ia_type)) && - (NS (this) != prev_frame->this)) { - /* If file, take the stat info from Storage - node. */ - local->stpre = *statpre; - local->stpost = *statpost; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - /* If the inode number is not filled, operation should - fail */ - if (!local->ia_ino) - local->op_ret = -1; - - local->stpre.ia_ino = local->ia_ino; - local->stpost.ia_ino = local->ia_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stpre, &local->stpost); - } - - return 0; -} - - -int32_t -unify_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, - struct iatt *stbuf, int32_t valid) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int32_t index = 0; - int32_t callcnt = 0; - uint64_t tmp_list = 0; - - if (!(loc && loc->inode)) { - STACK_UNWIND (frame, -1, EINVAL, NULL, NULL); - return 0; - } - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - - if (IA_ISDIR (loc->inode->ia_type)) { - local->call_count = 1; - - STACK_WIND (frame, - unify_setattr_cbk, - NS (this), - NS (this)->fops->setattr, - loc, stbuf, valid); - } else { - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - for (index = 0; local->list[index] != -1; index++) { - local->call_count++; - callcnt++; - } - - for (index = 0; local->list[index] != -1; index++) { - STACK_WIND (frame, - unify_setattr_cbk, - priv->xl_array[local->list[index]], - priv->xl_array[local->list[index]]->fops->setattr, - loc, stbuf, valid); - - if (!--callcnt) - break; - } - } - - return 0; -} - - -int32_t -unify_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, - struct iatt *stbuf, int32_t valid) -{ - unify_local_t *local = NULL; - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(fd); - - /* Initialization */ - INIT_LOCAL (frame, local); - - if (!fd_ctx_get (fd, this, &tmp_child)) { - /* If its set, then its file */ - child = (xlator_t *)(long)tmp_child; - - local->call_count = 2; - - STACK_WIND (frame, unify_setattr_cbk, child, - child->fops->fsetattr, fd, stbuf, valid); - - STACK_WIND (frame, unify_setattr_cbk, NS(this), - NS(this)->fops->fsetattr, fd, stbuf, valid); - } else { - local->call_count = 1; - - STACK_WIND (frame, unify_setattr_cbk, - NS(this), NS(this)->fops->fsetattr, - fd, stbuf, valid); - } - - return 0; -} - - -/** - * unify_truncate_cbk - - */ -int32_t -unify_truncate_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *prebuf, - struct iatt *postbuf) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - local->op_errno = op_errno; - if (!((op_errno == ENOENT) && priv->optimist)) - local->op_ret = -1; - } - - if (op_ret >= 0) { - if (NS (this) == prev_frame->this) { - local->ia_ino = postbuf->ia_ino; - /* If the entry is directory, get the - stat from NS node */ - if (IA_ISDIR (postbuf->ia_type) || - !local->stbuf.ia_blksize) { - local->stbuf = *prebuf; - local->poststbuf = *postbuf; - } - } - - if ((!IA_ISDIR (postbuf->ia_type)) && - (NS (this) != prev_frame->this)) { - /* If file, take the stat info from - Storage node. */ - local->stbuf = *prebuf; - local->poststbuf = *postbuf; - } - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->ia_ino) { - local->stbuf.ia_ino = local->ia_ino; - local->poststbuf.ia_ino = local->ia_ino; - } else { - local->op_ret = -1; - } - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf, &local->poststbuf); - } - - return 0; -} - - -/** - * unify_truncate - - */ -int32_t -unify_truncate (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - off_t offset) -{ - unify_local_t *local = NULL; - unify_private_t *priv = this->private; - int32_t index = 0; - int32_t callcnt = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->ia_ino = loc->inode->ino; - - if (IA_ISDIR (loc->inode->ia_type)) { - local->call_count = 1; - - STACK_WIND (frame, - unify_truncate_cbk, - NS(this), - NS(this)->fops->truncate, - loc, - 0); - } else { - local->op_ret = 0; - inode_ctx_get (loc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - for (index = 0; local->list[index] != -1; index++) { - local->call_count++; - callcnt++; - } - - /* Don't send offset to NS truncate */ - STACK_WIND (frame, unify_truncate_cbk, NS(this), - NS(this)->fops->truncate, loc, 0); - callcnt--; - - for (index = 0; local->list[index] != -1; index++) { - if (NS(this) != priv->xl_array[local->list[index]]) { - STACK_WIND (frame, - unify_truncate_cbk, - priv->xl_array[local->list[index]], - priv->xl_array[local->list[index]]->fops->truncate, - loc, - offset); - if (!--callcnt) - break; - } - } - } - - return 0; -} - -/** - * unify_readlink_cbk - - */ -int32_t -unify_readlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - const char *path, - struct iatt *sbuf) -{ - STACK_UNWIND (frame, op_ret, op_errno, path, sbuf); - return 0; -} - -/** - * unify_readlink - Read the link only from the storage node. - */ -int32_t -unify_readlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - size_t size) -{ - unify_private_t *priv = this->private; - int32_t entry_count = 0; - int16_t *list = NULL; - int16_t index = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) - entry_count++; - - if (entry_count >= 2) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_readlink_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->readlink, - loc, - size); - break; - } - } - } else { - gf_log (this->name, GF_LOG_ERROR, - "returning ENOENT, no softlink files found " - "on storage node"); - STACK_UNWIND (frame, -1, ENOENT, NULL); - } - - return 0; -} - - -/** - * unify_unlink_cbk - - */ -int32_t -unify_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - int32_t callcnt = 0; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == 0 || ((op_errno == ENOENT) && priv->optimist)) - local->op_ret = 0; - if (op_ret == -1) - local->op_errno = op_errno; - - if (((call_frame_t *)cookie)->this == NS(this)) { - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->oldpreparent, &local->oldpostparent); - } - - return 0; -} - - -/** - * unify_unlink - - */ -int32_t -unify_unlink (call_frame_t *frame, - xlator_t *this, - loc_t *loc) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) - local->call_count++; - - if (local->call_count) { - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - STACK_WIND (frame, - unify_unlink_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->unlink, - loc); - if (need_break) - break; - } - } else { - gf_log (this->name, GF_LOG_ERROR, - "%s: returning ENOENT", loc->path); - STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); - } - - return 0; -} - - -/** - * unify_readv_cbk - - */ -int32_t -unify_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, - struct iatt *stbuf, - struct iobref *iobref) -{ - STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref); - return 0; -} - -/** - * unify_readv - - */ -int32_t -unify_readv (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, - unify_readv_cbk, - child, - child->fops->readv, - fd, - size, - offset); - - - return 0; -} - -/** - * unify_writev_cbk - - */ -int32_t -unify_writev_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *prebuf, - struct iatt *postbuf) -{ - unify_local_t *local = NULL; - - local = frame->local; - - local->stbuf = *prebuf; - local->stbuf.ia_ino = local->ia_ino; - - local->poststbuf = *postbuf; - local->poststbuf.ia_ino = local->ia_ino; - - STACK_UNWIND (frame, op_ret, op_errno, - &local->stbuf, &local->poststbuf); - return 0; -} - -/** - * unify_writev - - */ -int32_t -unify_writev (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - struct iovec *vector, - int32_t count, - off_t off, - struct iobref *iobref) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - unify_local_t *local = NULL; - - INIT_LOCAL (frame, local); - local->ia_ino = fd->inode->ino; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, - unify_writev_cbk, - child, - child->fops->writev, - fd, - vector, - count, - off, - iobref); - - return 0; -} - -/** - * unify_ftruncate - - */ -int32_t -unify_ftruncate (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - off_t offset) -{ - xlator_t *child = NULL; - unify_local_t *local = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR(fd); - - /* Initialization */ - INIT_LOCAL (frame, local); - local->op_ret = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - local->call_count = 2; - - STACK_WIND (frame, unify_truncate_cbk, - child, child->fops->ftruncate, - fd, offset); - - STACK_WIND (frame, unify_truncate_cbk, - NS(this), NS(this)->fops->ftruncate, - fd, 0); - - return 0; -} - - -/** - * unify_flush_cbk - - */ -int32_t -unify_flush_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; -} - -/** - * unify_flush - - */ -int32_t -unify_flush (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_flush_cbk, child, - child->fops->flush, fd); - - return 0; -} - - -/** - * unify_fsync_cbk - - */ -int32_t -unify_fsync_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *prebuf, - struct iatt *postbuf) -{ - STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf); - return 0; -} - -/** - * unify_fsync - - */ -int32_t -unify_fsync (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_fsync_cbk, child, - child->fops->fsync, fd, flags); - - return 0; -} - -/** - * unify_fstat - Send fstat FOP to Namespace only if its directory, and to - * both namespace and the storage node if its a file. - */ -int32_t -unify_fstat (call_frame_t *frame, - xlator_t *this, - fd_t *fd) -{ - unify_local_t *local = NULL; - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(fd); - - INIT_LOCAL (frame, local); - local->ia_ino = fd->inode->ino; - - if (!fd_ctx_get (fd, this, &tmp_child)) { - /* If its set, then its file */ - child = (xlator_t *)(long)tmp_child; - local->call_count = 2; - - STACK_WIND (frame, unify_buf_cbk, child, - child->fops->fstat, fd); - - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->fstat, fd); - - } else { - /* this is an directory */ - local->call_count = 1; - STACK_WIND (frame, unify_buf_cbk, NS(this), - NS(this)->fops->fstat, fd); - } - - return 0; -} - -/** - * unify_getdents_cbk - - */ -int32_t -unify_getdents_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dir_entry_t *entry, - int32_t count) -{ - STACK_UNWIND (frame, op_ret, op_errno, entry, count); - return 0; -} - -/** - * unify_getdents - send the FOP request to all the nodes. - */ -int32_t -unify_getdents (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset, - int32_t flag) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_getdents_cbk, NS(this), - NS(this)->fops->getdents, fd, size, offset, flag); - - return 0; -} - - -/** - * unify_readdir_cbk - - */ -int32_t -unify_readdir_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - gf_dirent_t *buf) -{ - STACK_UNWIND (frame, op_ret, op_errno, buf); - - return 0; -} - -/** - * unify_readdir - send the FOP request to all the nodes. - */ -int32_t -unify_readdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - size_t size, - off_t offset) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_readdir_cbk, NS(this), - NS(this)->fops->readdir, fd, size, offset); - - return 0; -} - - -int32_t -unify_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, gf_dirent_t *buf) -{ - STACK_UNWIND (frame, op_ret, op_errno, buf); - - return 0; -} - - -int32_t -unify_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, - off_t offset) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_readdirp_cbk, NS(this), - NS(this)->fops->readdirp, fd, size, offset); - - return 0; -} - - -/** - * unify_fsyncdir_cbk - - */ -int32_t -unify_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; -} - -/** - * unify_fsyncdir - - */ -int32_t -unify_fsyncdir (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t flags) -{ - UNIFY_CHECK_FD_AND_UNWIND_ON_ERR (fd); - - STACK_WIND (frame, unify_fsyncdir_cbk, - NS(this), NS(this)->fops->fsyncdir, fd, flags); - - return 0; -} - -/** - * unify_lk_cbk - UNWIND frame with the proper return arguments. - */ -int32_t -unify_lk_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct gf_flock *lock) -{ - STACK_UNWIND (frame, op_ret, op_errno, lock); - return 0; -} - -/** - * unify_lk - Send it to all the storage nodes, (should be 1) which has file. - */ -int32_t -unify_lk (call_frame_t *frame, - xlator_t *this, - fd_t *fd, - int32_t cmd, - struct gf_flock *lock) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_lk_cbk, child, - child->fops->lk, fd, cmd, lock); - - return 0; -} - - -int32_t -unify_setxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno); - -static int32_t -unify_setxattr_file_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - unify_private_t *private = this->private; - unify_local_t *local = frame->local; - xlator_t *sched_xl = NULL; - struct sched_ops *sched_ops = NULL; - - if (op_ret == -1) { - if (!ENOTSUP) - gf_log (this->name, GF_LOG_ERROR, - "setxattr with XATTR_CREATE on ns: " - "path(%s) key(%s): %s", - local->loc1.path, local->name, - strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno); - return 0; - } - - LOCK (&frame->lock); - { - local->failed = 0; - local->op_ret = 0; - local->op_errno = 0; - local->call_count = 1; - } - UNLOCK (&frame->lock); - - /* schedule XATTR_CREATE on one of the child node */ - sched_ops = private->sched_ops; - - /* Send create request to the scheduled node now */ - sched_xl = sched_ops->schedule (this, local->name); - if (!sched_xl) { - STACK_UNWIND (frame, -1, ENOTCONN); - return 0; - } - - STACK_WIND (frame, - unify_setxattr_cbk, - sched_xl, - sched_xl->fops->setxattr, - &local->loc1, - local->dict, - local->flags); - return 0; -} - -/** - * unify_setxattr_cbk - When all the child nodes return, UNWIND frame. - */ -int32_t -unify_setxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - dict_t *dict = NULL; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - gf_log (this->name, (((op_errno == ENOENT) || - (op_errno == ENOTSUP))? - GF_LOG_DEBUG : GF_LOG_ERROR), - "child(%s): path(%s): %s", - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - if (local->failed == -1) { - local->failed = 1; - } - local->op_errno = op_errno; - } else { - local->failed = 0; - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - if (local->failed && local->name && - ZR_FILE_CONTENT_REQUEST(local->name)) { - dict = get_new_dict (); - dict_set (dict, local->dict->members_list->key, - data_from_dynptr(NULL, 0)); - dict_ref (dict); - - local->call_count = 1; - - STACK_WIND (frame, - unify_setxattr_file_cbk, - NS(this), - NS(this)->fops->setxattr, - &local->loc1, - dict, - XATTR_CREATE); - - dict_unref (dict); - return 0; - } - - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - - return 0; -} - -/** - * unify_sexattr - This function should be sent to all the storage nodes, - * which contains the file, (excluding namespace). - */ -int32_t -unify_setxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - dict_t *dict, - int32_t flags) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - int32_t call_count = 0; - uint64_t tmp_list = 0; - data_pair_t *trav = dict->members_list; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - local->failed = -1; - loc_copy (&local->loc1, loc); - - if (IA_ISDIR (loc->inode->ia_type)) { - - if (trav && trav->key && ZR_FILE_CONTENT_REQUEST(trav->key)) { - /* direct the storage xlators to change file - content only if file exists */ - local->flags = flags; - local->dict = dict; - local->name = gf_strdup (trav->key); - flags |= XATTR_REPLACE; - } - - local->call_count = priv->child_count; - for (index = 0; index < priv->child_count; index++) { - STACK_WIND (frame, - unify_setxattr_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->setxattr, - loc, dict, flags); - } - return 0; - } - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - call_count++; - } - } - - if (local->call_count) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_setxattr_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->setxattr, - loc, - dict, - flags); - if (!--call_count) - break; - } - } - return 0; - } - - /* No entry in storage nodes */ - gf_log (this->name, GF_LOG_DEBUG, - "returning ENOENT, file not found on storage node."); - STACK_UNWIND (frame, -1, ENOENT); - - return 0; -} - - -/** - * unify_getxattr_cbk - This function is called from only one child, so, no - * need of any lock or anything else, just send it to above layer - */ -int32_t -unify_getxattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - dict_t *value) -{ - int32_t callcnt = 0; - dict_t *local_value = NULL; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - - if (op_ret == -1) { - local->op_errno = op_errno; - gf_log (this->name, - (((op_errno == ENOENT) || - (op_errno == ENODATA) || - (op_errno == ENOTSUP)) ? - GF_LOG_DEBUG : GF_LOG_ERROR), - "child(%s): path(%s): %s", - prev_frame->this->name, - (local->loc1.path)?local->loc1.path:"", - strerror (op_errno)); - } else { - if (!local->dict) - local->dict = dict_ref (value); - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local_value = local->dict; - local->dict = NULL; - - STACK_UNWIND (frame, local->op_ret, local->op_errno, - local_value); - - if (local_value) - dict_unref (local_value); - } - - return 0; -} - - -/** - * unify_getxattr - This FOP is sent to only the storage node. - */ -int32_t -unify_getxattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) -{ - unify_private_t *priv = this->private; - int16_t *list = NULL; - int16_t index = 0; - int16_t count = 0; - unify_local_t *local = NULL; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - INIT_LOCAL (frame, local); - - if (IA_ISDIR (loc->inode->ia_type)) { - local->call_count = priv->child_count; - for (index = 0; index < priv->child_count; index++) - STACK_WIND (frame, - unify_getxattr_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->getxattr, - loc, - name); - return 0; - } - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - count++; - } - } - - if (count) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_getxattr_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->getxattr, - loc, - name); - if (!--count) - break; - } - } - } else { - dict_t *tmp_dict = get_new_dict (); - gf_log (this->name, GF_LOG_DEBUG, - "%s: returning ENODATA, no file found on storage node", - loc->path); - STACK_UNWIND (frame, -1, ENODATA, tmp_dict); - dict_destroy (tmp_dict); - } - - return 0; -} - -/** - * unify_removexattr_cbk - Wait till all the child node returns the call - * and then UNWIND to above layer. - */ -int32_t -unify_removexattr_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret == -1) { - local->op_errno = op_errno; - if (op_errno != ENOTSUP) - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - prev_frame->this->name, - local->loc1.path, strerror (op_errno)); - } else { - local->op_ret = op_ret; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - STACK_UNWIND (frame, local->op_ret, local->op_errno); - } - - return 0; -} - -/** - * unify_removexattr - Send it to all the child nodes which has the files. - */ -int32_t -unify_removexattr (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - const char *name) -{ - unify_private_t *priv = this->private; - unify_local_t *local = NULL; - int16_t *list = NULL; - int16_t index = 0; - int32_t call_count = 0; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - if (IA_ISDIR (loc->inode->ia_type)) { - local->call_count = priv->child_count; - for (index = 0; index < priv->child_count; index++) - STACK_WIND (frame, - unify_removexattr_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->removexattr, - loc, - name); - - return 0; - } - - inode_ctx_get (loc->inode, this, &tmp_list); - list = (int16_t *)(long)tmp_list; - - for (index = 0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - call_count++; - } - } - - if (local->call_count) { - for (index = 0; list[index] != -1; index++) { - if (priv->xl_array[list[index]] != NS(this)) { - STACK_WIND (frame, - unify_removexattr_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->removexattr, - loc, - name); - if (!--call_count) - break; - } - } - return 0; - } - - gf_log (this->name, GF_LOG_DEBUG, - "%s: returning ENOENT, not found on storage node.", loc->path); - STACK_UNWIND (frame, -1, ENOENT); - - return 0; -} - - -int32_t -unify_mknod_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) - gf_log (this->name, GF_LOG_ERROR, - "%s: %s", local->loc1.path, strerror (op_errno)); - - unify_local_wipe (local); - /* No log required here as this -1 is for mknod call */ - STACK_UNWIND (frame, -1, local->op_errno, NULL, NULL); - return 0; -} - -/** - * unify_mknod_cbk - - */ -int32_t -unify_mknod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "mknod failed on storage node, sending unlink to " - "namespace"); - local->op_errno = op_errno; - STACK_WIND (frame, - unify_mknod_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - return 0; - } - - local->stbuf = *buf; - local->stbuf.ia_ino = local->ia_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - return 0; -} - -/** - * unify_ns_mknod_cbk - - */ -int32_t -unify_ns_mknod_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - struct sched_ops *sched_ops = NULL; - xlator_t *sched_xl = NULL; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t *list = NULL; - int16_t index = 0; - call_frame_t *prev_frame = cookie; - - if (op_ret == -1) { - /* No need to send mknod request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s): %s", - prev_frame->this->name, local->loc1.path, - strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, buf, - preparent, postparent); - return 0; - } - - /* Create one inode for this entry */ - local->op_ret = 0; - local->stbuf = *buf; - local->ia_ino = buf->ia_ino; - - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - - list = GF_CALLOC (1, sizeof (int16_t) * 3, gf_unify_mt_int16_t); - ERR_ABORT (list); - list[0] = priv->child_count; - list[2] = -1; - inode_ctx_put (inode, this, (uint64_t)(long)list); - - sched_ops = priv->sched_ops; - - /* Send mknod request to scheduled node now */ - sched_xl = sched_ops->schedule (this, local->loc1.path); - if (!sched_xl) { - gf_log (this->name, GF_LOG_ERROR, - "mknod failed on storage node, no node online " - "at the moment, sending unlink to NS"); - local->op_errno = ENOTCONN; - STACK_WIND (frame, - unify_mknod_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - for (index = 0; index < priv->child_count; index++) - if (sched_xl == priv->xl_array[index]) - break; - list[1] = index; - - STACK_WIND (frame, unify_mknod_cbk, - sched_xl, sched_xl->fops->mknod, - &local->loc1, local->mode, local->dev); - - return 0; -} - -/** - * unify_mknod - Create a device on namespace first, and later create on - * the storage node. - */ -int32_t -unify_mknod (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - mode_t mode, - dev_t rdev) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - local->mode = mode; - local->dev = rdev; - loc_copy (&local->loc1, loc); - if (local->loc1.path == NULL) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, loc->inode, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_mknod_cbk, - NS(this), - NS(this)->fops->mknod, - loc, - mode, - rdev); - - return 0; -} - -int32_t -unify_symlink_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_local_t *local = frame->local; - if (op_ret == -1) - gf_log (this->name, GF_LOG_ERROR, - "%s: %s", local->loc1.path, strerror (op_errno)); - - unify_local_wipe (local); - STACK_UNWIND (frame, -1, local->op_errno, NULL, NULL); - return 0; -} - -/** - * unify_symlink_cbk - - */ -int32_t -unify_symlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) { - /* Symlink on storage node failed, hence send unlink - to the NS node */ - local->op_errno = op_errno; - gf_log (this->name, GF_LOG_ERROR, - "symlink on storage node failed, sending unlink " - "to namespace"); - - STACK_WIND (frame, - unify_symlink_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - local->stbuf = *buf; - local->stbuf.ia_ino = local->ia_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - - return 0; -} - -/** - * unify_ns_symlink_cbk - - */ -int32_t -unify_ns_symlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - - struct sched_ops *sched_ops = NULL; - xlator_t *sched_xl = NULL; - int16_t *list = NULL; - unify_local_t *local = frame->local; - unify_private_t *priv = this->private; - int16_t index = 0; - - if (op_ret == -1) { - /* No need to send symlink request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s): %s", - local->loc1.path, strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, NULL, buf, - preparent, postparent); - return 0; - } - - /* Create one inode for this entry */ - local->op_ret = 0; - local->ia_ino = buf->ia_ino; - - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - - /* Start the mapping list */ - - list = GF_CALLOC (1, sizeof (int16_t) * 3, gf_unify_mt_int16_t); - ERR_ABORT (list); - list[0] = priv->child_count; //namespace's index - list[2] = -1; - inode_ctx_put (inode, this, (uint64_t)(long)list); - - sched_ops = priv->sched_ops; - - /* Send symlink request to all the nodes now */ - sched_xl = sched_ops->schedule (this, local->loc1.path); - if (!sched_xl) { - /* Symlink on storage node failed, hence send unlink - to the NS node */ - local->op_errno = ENOTCONN; - gf_log (this->name, GF_LOG_ERROR, - "symlink on storage node failed, no node online, " - "sending unlink to namespace"); - - STACK_WIND (frame, - unify_symlink_unlink_cbk, - NS(this), - NS(this)->fops->unlink, - &local->loc1); - - return 0; - } - - for (index = 0; index < priv->child_count; index++) - if (sched_xl == priv->xl_array[index]) - break; - list[1] = index; - - STACK_WIND (frame, - unify_symlink_cbk, - sched_xl, - sched_xl->fops->symlink, - local->name, - &local->loc1); - - return 0; -} - -/** - * unify_symlink - - */ -int32_t -unify_symlink (call_frame_t *frame, - xlator_t *this, - const char *linkpath, - loc_t *loc) -{ - unify_local_t *local = NULL; - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, loc); - local->name = gf_strdup (linkpath); - - if ((local->name == NULL) || - (local->loc1.path == NULL)) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, loc->inode, NULL); - return 0; - } - - STACK_WIND (frame, - unify_ns_symlink_cbk, - NS(this), - NS(this)->fops->symlink, - linkpath, - loc); - - return 0; -} - - -int32_t -unify_rename_unlink_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *preparent, - struct iatt *postparent) -{ - int32_t callcnt = 0; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s -> %s): %s", - prev_frame->this->name, - local->loc1.path, local->loc2.path, - strerror (op_errno)); - - } - LOCK (&frame->lock); - { - callcnt = --local->call_count; - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local->stbuf.ia_ino = local->ia_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf); - } - return 0; -} - -int32_t -unify_ns_rename_undo_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *buf, - struct iatt *preoldparent, - struct iatt *postoldparent, - struct iatt *prenewparent, - struct iatt *postnewparent) -{ - unify_local_t *local = frame->local; - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s -> %s): %s", - local->loc1.path, local->loc2.path, - strerror (op_errno)); - } - - local->stbuf.ia_ino = local->ia_ino; - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, &local->stbuf); - return 0; -} - -int32_t -unify_rename_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *buf, - struct iatt *preoldparent, - struct iatt *postoldparent, - struct iatt *prenewparent, - struct iatt *postnewparent) -{ - int32_t index = 0; - int32_t callcnt = 0; - int16_t *list = NULL; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - call_frame_t *prev_frame = cookie; - - LOCK (&frame->lock); - { - callcnt = --local->call_count; - if (op_ret >= 0) { - if (!IA_ISDIR (buf->ia_type)) - local->stbuf = *buf; - local->op_ret = op_ret; - } else { - gf_log (this->name, GF_LOG_ERROR, - "child(%s): path(%s -> %s): %s", - prev_frame->this->name, - local->loc1.path, local->loc2.path, - strerror (op_errno)); - local->op_errno = op_errno; - } - } - UNLOCK (&frame->lock); - - if (!callcnt) { - local->stbuf.ia_ino = local->ia_ino; - if (IA_ISDIR (local->loc1.inode->ia_type)) { - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, local->op_errno, - &local->stbuf, &local->oldpreparent, - &local->oldpostparent, &local->newpreparent, - &local->newpostparent); - return 0; - } - - if (local->op_ret == -1) { - /* TODO: check this logic */ - - /* Rename failed in storage node, successful on NS, - * hence, rename back the entries in NS */ - /* NOTE: this will be done only if the destination - * doesn't exists, if the destination exists, the - * job of correcting NS is left to self-heal - */ - if (!local->index) { - loc_t tmp_oldloc = { - /* its actual 'newloc->path' */ - .path = local->loc2.path, - .inode = local->loc1.inode, - .parent = local->loc2.parent - }; - - loc_t tmp_newloc = { - /* Actual 'oldloc->path' */ - .path = local->loc1.path, - .parent = local->loc1.parent - }; - - gf_log (this->name, GF_LOG_ERROR, - "rename succussful on namespace, on " - "stroage node failed, reverting back"); - - STACK_WIND (frame, - unify_ns_rename_undo_cbk, - NS(this), - NS(this)->fops->rename, - &tmp_oldloc, - &tmp_newloc); - return 0; - } - } else { - /* Rename successful on storage nodes */ - - int32_t idx = 0; - int16_t *tmp_list = NULL; - uint64_t tmp_list_int64 = 0; - if (local->loc2.inode) { - inode_ctx_get (local->loc2.inode, - this, &tmp_list_int64); - list = (int16_t *)(long)tmp_list_int64; - - } - - if (list) { - for (index = 0; list[index] != -1; index++); - tmp_list = GF_CALLOC (1, index * 2, - gf_unify_mt_int16_t); - memcpy (tmp_list, list, index * 2); - - for (index = 0; list[index] != -1; index++) { - /* TODO: Check this logic. */ - /* If the destination file exists in - * the same storage node where we sent - * 'rename' call, no need to send - * unlink - */ - for (idx = 0; - local->list[idx] != -1; idx++) { - if (tmp_list[index] == local->list[idx]) { - tmp_list[index] = priv->child_count; - continue; - } - } - - if (NS(this) != priv->xl_array[tmp_list[index]]) { - local->call_count++; - callcnt++; - } - } - - if (local->call_count) { - if (callcnt > 1) - gf_log (this->name, - GF_LOG_ERROR, - "%s->%s: more (%d) " - "subvolumes have the " - "newloc entry", - local->loc1.path, - local->loc2.path, - callcnt); - - for (index=0; - tmp_list[index] != -1; index++) { - if (NS(this) != priv->xl_array[tmp_list[index]]) { - STACK_WIND (frame, - unify_rename_unlink_cbk, - priv->xl_array[tmp_list[index]], - priv->xl_array[tmp_list[index]]->fops->unlink, - &local->loc2); - if (!--callcnt) - break; - } - } - - GF_FREE (tmp_list); - return 0; - } - if (tmp_list) - GF_FREE (tmp_list); - } - } - - /* Need not send 'unlink' to storage node */ - unify_local_wipe (local); - STACK_UNWIND (frame, local->op_ret, - local->op_errno, &local->stbuf, - &local->oldpreparent, &local->oldpostparent, - &local->newpreparent, &local->newpostparent); - } - - return 0; -} - -int32_t -unify_ns_rename_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - struct iatt *buf, - struct iatt *preoldparent, - struct iatt *postoldparent, - struct iatt *prenewparent, - struct iatt *postnewparent) -{ - int32_t index = 0; - int32_t callcnt = 0; - int16_t *list = NULL; - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - - if (op_ret == -1) { - /* Free local->new_inode */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s -> %s): %s", - local->loc1.path, local->loc2.path, - strerror (op_errno)); - - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, buf, - preoldparent, postoldparent, - prenewparent, postnewparent); - return 0; - } - - local->stbuf = *buf; - local->ia_ino = buf->ia_ino; - - local->oldpreparent = *preoldparent; - local->oldpostparent = *postoldparent; - local->newpreparent = *prenewparent; - local->newpostparent = *postnewparent; - - /* Everything is fine. */ - if (IA_ISDIR (buf->ia_type)) { - local->call_count = priv->child_count; - for (index=0; index < priv->child_count; index++) { - STACK_WIND (frame, - unify_rename_cbk, - priv->xl_array[index], - priv->xl_array[index]->fops->rename, - &local->loc1, - &local->loc2); - } - - return 0; - } - - local->call_count = 0; - /* send rename */ - list = local->list; - for (index=0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - local->call_count++; - callcnt++; - } - } - - if (local->call_count) { - for (index=0; list[index] != -1; index++) { - if (NS(this) != priv->xl_array[list[index]]) { - STACK_WIND (frame, - unify_rename_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->rename, - &local->loc1, - &local->loc2); - if (!--callcnt) - break; - } - } - } else { - /* file doesn't seem to be present in storage nodes */ - gf_log (this->name, GF_LOG_CRITICAL, - "CRITICAL: source file not in storage node, " - "rename successful on namespace :O"); - unify_local_wipe (local); - STACK_UNWIND (frame, -1, EIO, NULL, - NULL, NULL, /* preoldparent, postoldparent */ - NULL, NULL); /* prenewparent, postnewparent */ - } - return 0; -} - - -/** - * unify_rename - One of the tricky function. The deadliest of all :O - */ -int32_t -unify_rename (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - unify_local_t *local = NULL; - uint64_t tmp_list = 0; - - /* Initialization */ - INIT_LOCAL (frame, local); - loc_copy (&local->loc1, oldloc); - loc_copy (&local->loc2, newloc); - - if ((local->loc1.path == NULL) || - (local->loc2.path == NULL)) { - gf_log (this->name, GF_LOG_CRITICAL, "Not enough memory :O"); - STACK_UNWIND (frame, -1, ENOMEM, NULL, - NULL, NULL, /* preoldparent, postoldparent */ - NULL, NULL); /* prenewparent, postnewparent */ - return 0; - } - - inode_ctx_get (oldloc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - STACK_WIND (frame, - unify_ns_rename_cbk, - NS(this), - NS(this)->fops->rename, - oldloc, - newloc); - return 0; -} - -/** - * unify_link_cbk - - */ -int32_t -unify_link_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_local_t *local = frame->local; - - if (op_ret >= 0) - local->stbuf = *buf; - local->stbuf.ia_ino = local->ia_ino; - - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf, - &local->oldpreparent, &local->oldpostparent); - - return 0; -} - -/** - * unify_ns_link_cbk - - */ -int32_t -unify_ns_link_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - inode_t *inode, - struct iatt *buf, - struct iatt *preparent, - struct iatt *postparent) -{ - unify_private_t *priv = this->private; - unify_local_t *local = frame->local; - int16_t *list = local->list; - int16_t index = 0; - - if (op_ret == -1) { - /* No need to send link request to other servers, - * as namespace action failed - */ - gf_log (this->name, GF_LOG_ERROR, - "namespace: path(%s -> %s): %s", - local->loc1.path, local->loc2.path, - strerror (op_errno)); - unify_local_wipe (local); - STACK_UNWIND (frame, op_ret, op_errno, inode, buf, - preparent, postparent); - return 0; - } - - /* Update inode for this entry */ - local->op_ret = 0; - local->ia_ino = buf->ia_ino; - - local->oldpreparent = *preparent; - local->oldpostparent = *postparent; - - /* Send link request to the node now */ - for (index = 0; list[index] != -1; index++) { - char need_break = (list[index+1] == -1); - if (priv->xl_array[list[index]] != NS (this)) { - STACK_WIND (frame, - unify_link_cbk, - priv->xl_array[list[index]], - priv->xl_array[list[index]]->fops->link, - &local->loc1, - &local->loc2); - break; - } - if (need_break) - break; - } - - return 0; -} - -/** - * unify_link - - */ -int32_t -unify_link (call_frame_t *frame, - xlator_t *this, - loc_t *oldloc, - loc_t *newloc) -{ - unify_local_t *local = NULL; - uint64_t tmp_list = 0; - - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (oldloc); - UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (newloc); - - /* Initialization */ - INIT_LOCAL (frame, local); - - loc_copy (&local->loc1, oldloc); - loc_copy (&local->loc2, newloc); - - inode_ctx_get (oldloc->inode, this, &tmp_list); - local->list = (int16_t *)(long)tmp_list; - - STACK_WIND (frame, - unify_ns_link_cbk, - NS(this), - NS(this)->fops->link, - oldloc, - newloc); - - return 0; -} - - -/** - * unify_checksum_cbk - - */ -int32_t -unify_checksum_cbk (call_frame_t *frame, - void *cookie, - xlator_t *this, - int32_t op_ret, - int32_t op_errno, - uint8_t *fchecksum, - uint8_t *dchecksum) -{ - STACK_UNWIND (frame, op_ret, op_errno, fchecksum, dchecksum); - - return 0; -} - -/** - * unify_checksum - - */ -int32_t -unify_checksum (call_frame_t *frame, - xlator_t *this, - loc_t *loc, - int32_t flag) -{ - STACK_WIND (frame, - unify_checksum_cbk, - NS(this), - NS(this)->fops->checksum, - loc, - flag); - - return 0; -} - - -/** - * unify_finodelk_cbk - - */ -int -unify_finodelk_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; -} - -/** - * unify_finodelk - */ -int -unify_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int cmd, struct gf_flock *flock) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_finodelk_cbk, - child, child->fops->finodelk, - volume, fd, cmd, flock); - - return 0; -} - - - -/** - * unify_fentrylk_cbk - - */ -int -unify_fentrylk_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; -} - -/** - * unify_fentrylk - */ -int -unify_fentrylk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, const char *basename, - entrylk_cmd cmd, entrylk_type type) - -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_fentrylk_cbk, - child, child->fops->fentrylk, - volume, fd, basename, cmd, type); - - return 0; -} - - - -/** - * unify_fxattrop_cbk - - */ -int -unify_fxattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) -{ - STACK_UNWIND (frame, op_ret, op_errno, xattr); - return 0; -} - -/** - * unify_fxattrop - */ -int -unify_fxattrop (call_frame_t *frame, xlator_t *this, - fd_t *fd, gf_xattrop_flags_t optype, dict_t *xattr) -{ - UNIFY_CHECK_FD_CTX_AND_UNWIND_ON_ERR (fd); - xlator_t *child = NULL; - uint64_t tmp_child = 0; - - fd_ctx_get (fd, this, &tmp_child); - child = (xlator_t *)(long)tmp_child; - - STACK_WIND (frame, unify_fxattrop_cbk, - child, child->fops->fxattrop, - fd, optype, xattr); - - return 0; -} - - -/** - * unify_inodelk_cbk - - */ -int -unify_inodelk_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; -} - - -/** - * unify_inodelk - */ -int -unify_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int cmd, struct gf_flock *flock) -{ - xlator_t *child = NULL; - - child = unify_loc_subvol (loc, this); - - STACK_WIND (frame, unify_inodelk_cbk, - child, child->fops->inodelk, - volume, loc, cmd, flock); - - return 0; -} - - - -/** - * unify_entrylk_cbk - - */ -int -unify_entrylk_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; -} - -/** - * unify_entrylk - */ -int -unify_entrylk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, const char *basename, - entrylk_cmd cmd, entrylk_type type) - -{ - xlator_t *child = NULL; - - child = unify_loc_subvol (loc, this); - - STACK_WIND (frame, unify_entrylk_cbk, - child, child->fops->entrylk, - volume, loc, basename, cmd, type); - - return 0; -} - - - -/** - * unify_xattrop_cbk - - */ -int -unify_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *xattr) -{ - STACK_UNWIND (frame, op_ret, op_errno, xattr); - return 0; -} - -/** - * unify_xattrop - */ -int -unify_xattrop (call_frame_t *frame, xlator_t *this, - loc_t *loc, gf_xattrop_flags_t optype, dict_t *xattr) -{ - xlator_t *child = NULL; - - child = unify_loc_subvol (loc, this); - - STACK_WIND (frame, unify_xattrop_cbk, - child, child->fops->xattrop, - loc, optype, xattr); - - return 0; -} - -int -unify_forget (xlator_t *this, - inode_t *inode) -{ - int16_t *list = NULL; - uint64_t tmp_list = 0; - - if (inode->ia_type && (!IA_ISDIR(inode->ia_type))) { - inode_ctx_get (inode, this, &tmp_list); - if (tmp_list) { - list = (int16_t *)(long)tmp_list; - GF_FREE (list); - } - } - - return 0; -} - -/** - * notify - */ -int32_t -notify (xlator_t *this, - int32_t event, - void *data, - ...) -{ - unify_private_t *priv = this->private; - struct sched_ops *sched = NULL; - - if (!priv) { - return 0; - } - - sched = priv->sched_ops; - if (!sched) { - gf_log (this->name, GF_LOG_CRITICAL, "No scheduler :O"); - raise (SIGTERM); - return 0; - } - if (priv->namespace == data) { - if (event == GF_EVENT_CHILD_UP) { - sched->notify (this, event, data); - } - return 0; - } - - switch (event) - { - case GF_EVENT_CHILD_UP: - { - /* Call scheduler's update () to enable it for scheduling */ - sched->notify (this, event, data); - - LOCK (&priv->lock); - { - /* Increment the inode's generation, which is - used for self_heal */ - ++priv->inode_generation; - ++priv->num_child_up; - } - UNLOCK (&priv->lock); - - if (!priv->is_up) { - default_notify (this, event, data); - priv->is_up = 1; - } - } - break; - case GF_EVENT_CHILD_DOWN: - { - /* Call scheduler's update () to disable the child node - * for scheduling - */ - sched->notify (this, event, data); - LOCK (&priv->lock); - { - --priv->num_child_up; - } - UNLOCK (&priv->lock); - - if (priv->num_child_up == 0) { - /* Send CHILD_DOWN to upper layer */ - default_notify (this, event, data); - priv->is_up = 0; - } - } - break; - - default: - { - default_notify (this, event, data); - } - break; - } - - return 0; -} - -int32_t -mem_acct_init (xlator_t *this) -{ - int ret = -1; - - if (!this) - return ret; - - ret = xlator_mem_acct_init (this, gf_unify_mt_end + 1); - - if (ret != 0) { - gf_log (this->name, GF_LOG_ERROR, "Memory accounting init" - "failed"); - return ret; - } - - return ret; -} - -/** - * init - This function is called first in the xlator, while initializing. - * All the config file options are checked and appropriate flags are set. - * - * @this - - */ -int32_t -init (xlator_t *this) -{ - int32_t ret = 0; - int32_t count = 0; - data_t *scheduler = NULL; - data_t *data = NULL; - xlator_t *ns_xl = NULL; - xlator_list_t *trav = NULL; - xlator_list_t *xlparent = NULL; - xlator_list_t *parent = NULL; - unify_private_t *_private = NULL; - - - /* Check for number of child nodes, if there is no child nodes, exit */ - if (!this->children) { - gf_log (this->name, GF_LOG_ERROR, - "No child nodes specified. check \"subvolumes \" " - "option in volfile"); - return -1; - } - - if (!this->parents) { - gf_log (this->name, GF_LOG_WARNING, - "dangling volume. check volfile "); - } - - /* Check for 'scheduler' in volume */ - scheduler = dict_get (this->options, "scheduler"); - if (!scheduler) { - gf_log (this->name, GF_LOG_ERROR, - "\"option scheduler <x>\" is missing in volfile"); - return -1; - } - - /* Setting "option namespace <node>" */ - data = dict_get (this->options, "namespace"); - if(!data) { - gf_log (this->name, GF_LOG_CRITICAL, - "namespace option not specified, Exiting"); - return -1; - } - /* Search namespace in the child node, if found, exit */ - trav = this->children; - while (trav) { - if (strcmp (trav->xlator->name, data->data) == 0) - break; - trav = trav->next; - } - if (trav) { - gf_log (this->name, GF_LOG_CRITICAL, - "namespace node used as a subvolume, Exiting"); - return -1; - } - - /* Search for the namespace node, if found, continue */ - ns_xl = this->next; - while (ns_xl) { - if (strcmp (ns_xl->name, data->data) == 0) - break; - ns_xl = ns_xl->next; - } - if (!ns_xl) { - gf_log (this->name, GF_LOG_CRITICAL, - "namespace node not found in volfile, Exiting"); - return -1; - } - - gf_log (this->name, GF_LOG_DEBUG, - "namespace node specified as %s", data->data); - - _private = GF_CALLOC (1, sizeof (*_private), - gf_unify_mt_unify_private_t); - ERR_ABORT (_private); - _private->sched_ops = get_scheduler (this, scheduler->data); - if (!_private->sched_ops) { - gf_log (this->name, GF_LOG_CRITICAL, - "Error while loading scheduler. Exiting"); - GF_FREE (_private); - return -1; - } - - if (ns_xl->parents) { - gf_log (this->name, GF_LOG_CRITICAL, - "Namespace node should not be a child of any other node. Exiting"); - GF_FREE (_private); - return -1; - } - - _private->namespace = ns_xl; - - /* update _private structure */ - { - count = 0; - trav = this->children; - /* Get the number of child count */ - while (trav) { - count++; - trav = trav->next; - } - - gf_log (this->name, GF_LOG_DEBUG, - "Child node count is %d", count); - - _private->child_count = count; - if (count == 1) { - /* TODO: Should I error out here? */ - gf_log (this->name, GF_LOG_CRITICAL, - "WARNING: You have defined only one " - "\"subvolumes\" for unify volume. It may not " - "be the desired config, review your volume " - "volfile. If this is how you are testing it," - " you may hit some performance penalty"); - } - - _private->xl_array = GF_CALLOC (1, - sizeof (xlator_t) * (count + 1), - gf_unify_mt_xlator_t); - ERR_ABORT (_private->xl_array); - - count = 0; - trav = this->children; - while (trav) { - _private->xl_array[count++] = trav->xlator; - trav = trav->next; - } - _private->xl_array[count] = _private->namespace; - - /* self-heal part, start with generation '1' */ - _private->inode_generation = 1; - /* Because, Foreground part is tested well */ - _private->self_heal = ZR_UNIFY_FG_SELF_HEAL; - data = dict_get (this->options, "self-heal"); - if (data) { - if (strcasecmp (data->data, "off") == 0) - _private->self_heal = ZR_UNIFY_SELF_HEAL_OFF; - - if (strcasecmp (data->data, "foreground") == 0) - _private->self_heal = ZR_UNIFY_FG_SELF_HEAL; - - if (strcasecmp (data->data, "background") == 0) - _private->self_heal = ZR_UNIFY_BG_SELF_HEAL; - } - - /* optimist - ask bulde for more about it */ - data = dict_get (this->options, "optimist"); - if (data) { - if (gf_string2boolean (data->data, - &_private->optimist) == -1) { - gf_log (this->name, GF_LOG_ERROR, - "optimist excepts only boolean " - "options"); - } - } - - LOCK_INIT (&_private->lock); - } - - /* Now that everything is fine. */ - this->private = (void *)_private; - { - ret = _private->sched_ops->mem_acct_init (this); - - if (ret == -1) { - return -1; - } - - /* Initialize scheduler, if everything else is successful */ - ret = _private->sched_ops->init (this); - if (ret == -1) { - gf_log (this->name, GF_LOG_CRITICAL, - "Initializing scheduler failed, Exiting"); - GF_FREE (_private); - return -1; - } - - - ret = 0; - - /* This section is required because some fops may look - * for 'xl->parent' variable - */ - xlparent = GF_CALLOC (1, sizeof (*xlparent), - gf_unify_mt_xlator_list_t); - xlparent->xlator = this; - if (!ns_xl->parents) { - ns_xl->parents = xlparent; - } else { - parent = ns_xl->parents; - while (parent->next) - parent = parent->next; - parent->next = xlparent; - } - } - - /* Tell namespace node that init is done */ - xlator_notify (ns_xl, GF_EVENT_PARENT_UP, this); - - return 0; -} - -/** - * fini - Free all the allocated memory - */ -void -fini (xlator_t *this) -{ - unify_private_t *priv = this->private; - priv->sched_ops->fini (this); - this->private = NULL; - LOCK_DESTROY (&priv->lock); - GF_FREE (priv->xl_array); - GF_FREE (priv); - return; -} - - -struct xlator_fops fops = { - .stat = unify_stat, - .readlink = unify_readlink, - .mknod = unify_mknod, - .mkdir = unify_mkdir, - .unlink = unify_unlink, - .rmdir = unify_rmdir, - .symlink = unify_symlink, - .rename = unify_rename, - .link = unify_link, - .truncate = unify_truncate, - .create = unify_create, - .open = unify_open, - .readv = unify_readv, - .writev = unify_writev, - .statfs = unify_statfs, - .flush = unify_flush, - .fsync = unify_fsync, - .setxattr = unify_setxattr, - .getxattr = unify_getxattr, - .removexattr = unify_removexattr, - .opendir = unify_opendir, - .readdir = unify_readdir, - .readdirp = unify_readdirp, - .fsyncdir = unify_fsyncdir, - .access = unify_access, - .ftruncate = unify_ftruncate, - .fstat = unify_fstat, - .lk = unify_lk, - .lookup = unify_lookup, - .getdents = unify_getdents, - .checksum = unify_checksum, - .inodelk = unify_inodelk, - .finodelk = unify_finodelk, - .entrylk = unify_entrylk, - .fentrylk = unify_fentrylk, - .xattrop = unify_xattrop, - .fxattrop = unify_fxattrop, - .setattr = unify_setattr, - .fsetattr = unify_fsetattr, -}; - - -struct xlator_cbks cbks = { - .forget = unify_forget, -}; - -struct volume_options options[] = { - { .key = { "namespace" }, - .type = GF_OPTION_TYPE_XLATOR - }, - { .key = { "scheduler" }, - .value = { "alu", "rr", "random", "nufa", "switch" }, - .type = GF_OPTION_TYPE_STR - }, - { .key = {"self-heal"}, - .value = { "foreground", "background", "off" }, - .type = GF_OPTION_TYPE_STR - }, - /* TODO: remove it some time later */ - { .key = {"optimist"}, - .type = GF_OPTION_TYPE_BOOL - }, - - { .key = {NULL} }, -}; |