diff options
Diffstat (limited to 'xlators/performance/md-cache/src/md-cache.c')
| -rw-r--r-- | xlators/performance/md-cache/src/md-cache.c | 1764 |
1 files changed, 1764 insertions, 0 deletions
diff --git a/xlators/performance/md-cache/src/md-cache.c b/xlators/performance/md-cache/src/md-cache.c new file mode 100644 index 00000000000..dd9a8d6d09a --- /dev/null +++ b/xlators/performance/md-cache/src/md-cache.c @@ -0,0 +1,1764 @@ +/* + Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "glusterfs.h" +#include "logging.h" +#include "dict.h" +#include "xlator.h" +#include "md-cache-mem-types.h" +#include <assert.h> +#include <sys/time.h> + + +/* TODO: + - cache symlink() link names and nuke symlink-cache + - send proper postbuf in setattr_cbk even when op_ret = -1 +*/ + + +struct mdc_conf { + int timeout; +}; + + +struct mdc_key { + const char *name; + int load; + int check; +} mdc_keys[] = { + { + .name = "system.posix_acl_access", + .load = 1, + .check = 1, + }, + { + .name = "system.posix_acl_default", + .load = 1, + .check = 1, + }, + { + .name = "security.selinux", + .load = 1, + .check = 1, + }, + { + .name = "security.capability", + .load = 1, + .check = 1, + }, + { + .name = "gfid-req", + .load = 0, + .check = 1, + }, + {}, +}; + + +static uint64_t +gfid_to_ino (uuid_t gfid) +{ + uint64_t ino = 0; + int i = 0, j = 0; + + for (i = 15; i > (15 - 8); i--) { + ino += (uint64_t)(gfid[i]) << j; + j += 8; + } + + return ino; +} + + +struct mdc_local; +typedef struct mdc_local mdc_local_t; + +#define MDC_STACK_UNWIND(fop, frame, params ...) do { \ + mdc_local_t *__local = NULL; \ + xlator_t *__xl = NULL; \ + if (frame) { \ + __xl = frame->this; \ + __local = frame->local; \ + frame->local = NULL; \ + } \ + STACK_UNWIND_STRICT (fop, frame, params); \ + mdc_local_wipe (__xl, __local); \ + } while (0) + + +struct md_cache { + ia_prot_t md_prot; + uint32_t md_nlink; + uint32_t md_uid; + uint32_t md_gid; + uint32_t md_atime; + uint32_t md_atime_nsec; + uint32_t md_mtime; + uint32_t md_mtime_nsec; + uint32_t md_ctime; + uint32_t md_ctime_nsec; + uint64_t md_rdev; + uint64_t md_size; + uint64_t md_blocks; + dict_t *xattr; + char *linkname; + time_t ia_time; + time_t xa_time; +}; + + +struct mdc_local { + loc_t loc; + loc_t loc2; + fd_t *fd; + char *linkname; + dict_t *xattr; +}; + + +int +__mdc_inode_ctx_get (xlator_t *this, inode_t *inode, struct md_cache **mdc_p) +{ + int ret = 0; + struct md_cache *mdc = NULL; + uint64_t mdc_int = 0; + + ret = __inode_ctx_get (inode, this, &mdc_int); + mdc = (void *) (long) (mdc_int); + if (ret == 0 && mdc_p) + *mdc_p = mdc; + + return ret; +} + + +int +mdc_inode_ctx_get (xlator_t *this, inode_t *inode, struct md_cache **mdc_p) +{ + int ret; + + LOCK(&inode->lock); + { + ret = __mdc_inode_ctx_get (this, inode, mdc_p); + } + UNLOCK(&inode->lock); + + return ret; +} + + +int +__mdc_inode_ctx_set (xlator_t *this, inode_t *inode, struct md_cache *mdc) +{ + int ret = 0; + uint64_t mdc_int = 0; + + mdc_int = (long) mdc; + ret = __inode_ctx_set2 (inode, this, &mdc_int, 0); + + return ret; +} + + +int +mdc_inode_ctx_set (xlator_t *this, inode_t *inode, struct md_cache *mdc) +{ + int ret; + + LOCK(&inode->lock); + { + ret = __mdc_inode_ctx_set (this, inode, mdc); + } + UNLOCK(&inode->lock); + + return ret; +} + + +mdc_local_t * +mdc_local_get (call_frame_t *frame) +{ + mdc_local_t *local = NULL; + + local = frame->local; + if (local) + goto out; + + local = GF_CALLOC (sizeof (*local), 1, gf_mdc_mt_mdc_local_t); + if (!local) + goto out; + + frame->local = local; +out: + return local; +} + + +void +mdc_local_wipe (xlator_t *this, mdc_local_t *local) +{ + if (!local) + return; + + loc_wipe (&local->loc); + + loc_wipe (&local->loc2); + + if (local->fd) + fd_unref (local->fd); + + if (local->linkname) + GF_FREE (local->linkname); + + if (local->xattr) + dict_unref (local->xattr); + + GF_FREE (local); + return; +} + + +int +mdc_inode_wipe (xlator_t *this, inode_t *inode) +{ + int ret = 0; + uint64_t mdc_int = 0; + struct md_cache *mdc = NULL; + + ret = inode_ctx_del (inode, this, &mdc_int); + if (ret != 0) + goto out; + + mdc = (void *) (long) mdc_int; + + if (mdc->xattr) + dict_unref (mdc->xattr); + + if (mdc->linkname) + GF_FREE (mdc->linkname); + + GF_FREE (mdc); + + ret = 0; +out: + return ret; +} + + +struct md_cache * +mdc_inode_prep (xlator_t *this, inode_t *inode) +{ + int ret = 0; + struct md_cache *mdc = NULL; + + LOCK (&inode->lock); + { + ret = __mdc_inode_ctx_get (this, inode, &mdc); + if (ret == 0) + goto unlock; + + mdc = GF_CALLOC (sizeof (*mdc), 1, gf_mdc_mt_md_cache_t); + if (!mdc) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto unlock; + } + + ret = __mdc_inode_ctx_set (this, inode, mdc); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + GF_FREE (mdc); + mdc = NULL; + } + } +unlock: + UNLOCK (&inode->lock); + + return mdc; +} + + +static gf_boolean_t +is_md_cache_iatt_valid (xlator_t *this, struct md_cache *mdc) +{ + struct mdc_conf *conf = NULL; + time_t now = 0; + + conf = this->private; + + time (&now); + + if (now > (mdc->ia_time + conf->timeout)) + return _gf_false; + + return _gf_true; +} + + +static gf_boolean_t +is_md_cache_xatt_valid (xlator_t *this, struct md_cache *mdc) +{ + struct mdc_conf *conf = NULL; + time_t now = 0; + + conf = this->private; + + time (&now); + + if (now > (mdc->xa_time + conf->timeout)) + return _gf_false; + + return _gf_true; +} + + +void +mdc_from_iatt (struct md_cache *mdc, struct iatt *iatt) +{ + mdc->md_prot = iatt->ia_prot; + mdc->md_nlink = iatt->ia_nlink; + mdc->md_uid = iatt->ia_uid; + mdc->md_gid = iatt->ia_gid; + mdc->md_atime = iatt->ia_atime; + mdc->md_atime_nsec = iatt->ia_atime_nsec; + mdc->md_mtime = iatt->ia_mtime; + mdc->md_mtime_nsec = iatt->ia_mtime_nsec; + mdc->md_ctime = iatt->ia_ctime; + mdc->md_ctime_nsec = iatt->ia_ctime_nsec; + mdc->md_rdev = iatt->ia_rdev; + mdc->md_size = iatt->ia_size; + mdc->md_blocks = iatt->ia_blocks; +} + + +void +mdc_to_iatt (struct md_cache *mdc, struct iatt *iatt) +{ + iatt->ia_prot = mdc->md_prot; + iatt->ia_nlink = mdc->md_nlink; + iatt->ia_uid = mdc->md_uid; + iatt->ia_gid = mdc->md_gid; + iatt->ia_atime = mdc->md_atime; + iatt->ia_atime_nsec = mdc->md_atime_nsec; + iatt->ia_mtime = mdc->md_mtime; + iatt->ia_mtime_nsec = mdc->md_mtime_nsec; + iatt->ia_ctime = mdc->md_ctime; + iatt->ia_ctime_nsec = mdc->md_ctime_nsec; + iatt->ia_rdev = mdc->md_rdev; + iatt->ia_size = mdc->md_size; + iatt->ia_blocks = mdc->md_blocks; +} + + +int +mdc_inode_iatt_set (xlator_t *this, inode_t *inode, struct iatt *iatt) +{ + int ret = -1; + struct md_cache *mdc = NULL; + + mdc = mdc_inode_prep (this, inode); + if (!mdc) + goto out; + + if (!iatt || !iatt->ia_ctime) { + mdc->ia_time = 0; + return 0; + } + + mdc_from_iatt (mdc, iatt); + + time (&mdc->ia_time); + + ret = 0; +out: + return ret; +} + + +int +mdc_inode_iatt_get (xlator_t *this, inode_t *inode, struct iatt *iatt) +{ + int ret = -1; + struct md_cache *mdc = NULL; + + if (mdc_inode_ctx_get (this, inode, &mdc) != 0) + goto out; + + if (!is_md_cache_iatt_valid (this, mdc)) + goto out; + + mdc_to_iatt (mdc, iatt); + + uuid_copy (iatt->ia_gfid, inode->gfid); + iatt->ia_ino = gfid_to_ino (inode->gfid); + iatt->ia_dev = 42; + iatt->ia_type = inode->ia_type; + + ret = 0; +out: + return ret; +} + + +int +mdc_inode_xatt_set (xlator_t *this, inode_t *inode, dict_t *dict) +{ + int ret = -1; + struct md_cache *mdc = NULL; + + mdc = mdc_inode_prep (this, inode); + if (!mdc) + goto out; + + if (!dict) + goto out; + + if (mdc->xattr) + dict_unref (mdc->xattr); + + mdc->xattr = dict_ref (dict); + + time (&mdc->xa_time); + + ret = 0; +out: + return ret; +} + + +int +mdc_inode_xatt_update (xlator_t *this, inode_t *inode, dict_t *dict) +{ + int ret = -1; + struct md_cache *mdc = NULL; + + mdc = mdc_inode_prep (this, inode); + if (!mdc) + goto out; + + if (!dict) + goto out; + + if (!mdc->xattr) + mdc->xattr = dict_ref (dict); + else + dict_copy (dict, mdc->xattr); + + mdc->xattr = dict_ref (dict); + + time (&mdc->xa_time); + + ret = 0; +out: + return ret; +} + + +int +mdc_inode_xatt_get (xlator_t *this, inode_t *inode, dict_t **dict) +{ + int ret = -1; + struct md_cache *mdc = NULL; + + if (mdc_inode_ctx_get (this, inode, &mdc) != 0) + goto out; + + if (!is_md_cache_xatt_valid (this, mdc)) + goto out; + + if (!mdc->xattr) + goto out; + + if (dict) + *dict = dict_ref (mdc->xattr); + + ret = 0; +out: + return ret; +} + + +void +mdc_load_reqs (xlator_t *this, dict_t *dict) +{ + const char *mdc_key = NULL; + int i = 0; + int ret = 0; + + for (mdc_key = mdc_keys[i].name; (mdc_key = mdc_keys[i].name); i++) { + if (!mdc_keys[i].load) + continue; + ret = dict_set_int8 (dict, (char *)mdc_key, 0); + if (ret) + return; + } +} + + +struct checkpair { + int ret; + dict_t *rsp; +}; + + +static int +is_mdc_key_satisfied (const char *key) +{ + const char *mdc_key = NULL; + int i = 0; + + if (!key) + return 0; + + for (mdc_key = mdc_keys[i].name; (mdc_key = mdc_keys[i].name); i++) { + if (!mdc_keys[i].check) + continue; + if (strcmp (mdc_key, key) == 0) + return 1; + } + + return 0; +} + + +static void +checkfn (dict_t *this, char *key, data_t *value, void *data) +{ + struct checkpair *pair = data; + + if (!is_mdc_key_satisfied (key)) + pair->ret = 0; +} + + +int +mdc_xattr_satisfied (xlator_t *this, dict_t *req, dict_t *rsp) +{ + struct checkpair pair = { + .ret = 1, + .rsp = rsp, + }; + + dict_foreach (req, checkfn, &pair); + + return pair.ret; +} + + +int +mdc_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *stbuf, dict_t *dict, struct iatt *postparent) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + + if (local->loc.inode) { + mdc_inode_iatt_set (this, local->loc.inode, stbuf); + mdc_inode_xatt_set (this, local->loc.inode, dict); + } +out: + MDC_STACK_UNWIND (lookup, frame, op_ret, op_errno, inode, stbuf, + dict, postparent); + return 0; +} + + +int +mdc_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xattr_req) +{ + int ret = 0; + struct iatt stbuf = {0, }; + struct iatt postparent = {0, }; + dict_t *xattr_rsp = NULL; + mdc_local_t *local = NULL; + + + local = mdc_local_get (frame); + if (!local) + goto uncached; + + loc_copy (&local->loc, loc); + + ret = mdc_inode_iatt_get (this, loc->inode, &stbuf); + if (ret != 0) + goto uncached; + + if (xattr_req) { + ret = mdc_inode_xatt_get (this, loc->inode, &xattr_rsp); + if (ret != 0) + goto uncached; + + if (!mdc_xattr_satisfied (this, xattr_req, xattr_rsp)) + goto uncached; + } + + MDC_STACK_UNWIND (lookup, frame, 0, 0, loc->inode, &stbuf, + xattr_rsp, &postparent); + + if (xattr_rsp) + dict_unref (xattr_rsp); + + return 0; + +uncached: + if (xattr_req) + mdc_load_reqs (this, xattr_req); + + STACK_WIND (frame, mdc_lookup_cbk, FIRST_CHILD (this), + FIRST_CHILD (this)->fops->lookup, loc, xattr_req); + + if (xattr_rsp) + dict_unref (xattr_rsp); + + return 0; +} + + +int +mdc_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf) +{ + mdc_local_t *local = NULL; + + if (op_ret != 0) + goto out; + + local = frame->local; + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->loc.inode, buf); + +out: + MDC_STACK_UNWIND (stat, frame, op_ret, op_errno, buf); + + return 0; +} + + +int +mdc_stat (call_frame_t *frame, xlator_t *this, loc_t *loc) +{ + int ret; + struct iatt stbuf; + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + if (!local) + goto uncached; + + loc_copy (&local->loc, loc); + + ret = mdc_inode_iatt_get (this, loc->inode, &stbuf); + if (ret != 0) + goto uncached; + + MDC_STACK_UNWIND (stat, frame, 0, 0, &stbuf); + + return 0; + +uncached: + STACK_WIND (frame, mdc_stat_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->stat, + loc); + return 0; +} + + +int +mdc_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *buf) +{ + mdc_local_t *local = NULL; + + if (op_ret != 0) + goto out; + + local = frame->local; + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->fd->inode, buf); + +out: + MDC_STACK_UNWIND (fstat, frame, op_ret, op_errno, buf); + + return 0; +} + + +int +mdc_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd) +{ + int ret; + struct iatt stbuf; + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + if (!local) + goto uncached; + + local->fd = fd_ref (fd); + + ret = mdc_inode_iatt_get (this, fd->inode, &stbuf); + if (ret != 0) + goto uncached; + + MDC_STACK_UNWIND (fstat, frame, 0, 0, &stbuf); + + return 0; + +uncached: + STACK_WIND (frame, mdc_fstat_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->fstat, + fd); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->loc.inode, postbuf); + +out: + MDC_STACK_UNWIND (truncate, frame, op_ret, op_errno, prebuf, postbuf); + + return 0; +} + + +int +mdc_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, + off_t offset) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->loc.inode = inode_ref (loc->inode); + + STACK_WIND (frame, mdc_truncate_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->truncate, + loc, offset); + return 0; +} + + +int +mdc_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *prebuf, struct iatt *postbuf) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->fd->inode, postbuf); + +out: + MDC_STACK_UNWIND (ftruncate, frame, op_ret, op_errno, prebuf, postbuf); + + return 0; +} + + +int +mdc_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->fd = fd_ref (fd); + + STACK_WIND (frame, mdc_ftruncate_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->ftruncate, + fd, offset); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + + if (local->loc.inode) { + mdc_inode_iatt_set (this, local->loc.inode, buf); + mdc_inode_xatt_set (this, local->loc.inode, local->xattr); + } +out: + MDC_STACK_UNWIND (mknod, frame, op_ret, op_errno, inode, buf, + preparent, postparent); + return 0; +} + + +int +mdc_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, + mode_t mode, dev_t rdev, dict_t *params) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + local->xattr = dict_ref (params); + + STACK_WIND (frame, mdc_mknod_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->mknod, + loc, mode, rdev, params); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + + if (local->loc.inode) { + mdc_inode_iatt_set (this, local->loc.inode, buf); + mdc_inode_xatt_set (this, local->loc.inode, local->xattr); + } +out: + MDC_STACK_UNWIND (mkdir, frame, op_ret, op_errno, inode, buf, + preparent, postparent); + return 0; +} + + +int +mdc_mkdir (call_frame_t *frame, xlator_t *this, loc_t *loc, + mode_t mode, dict_t *params) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + local->xattr = dict_ref (params); + + STACK_WIND (frame, mdc_mkdir_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->mkdir, + loc, mode, params); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + + if (local->loc.inode) { + mdc_inode_iatt_set (this, local->loc.inode, NULL); + } + +out: + MDC_STACK_UNWIND (unlink, frame, op_ret, op_errno, + preparent, postparent); + return 0; +} + + +int +mdc_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + + STACK_WIND (frame, mdc_unlink_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->unlink, + loc); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + +out: + MDC_STACK_UNWIND (rmdir, frame, op_ret, op_errno, + preparent, postparent); + return 0; +} + + +int +mdc_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc, int flag) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + + STACK_WIND (frame, mdc_rmdir_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->rmdir, + loc, flag); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + + if (local->loc.inode) { + mdc_inode_iatt_set (this, local->loc.inode, buf); + } +out: + MDC_STACK_UNWIND (symlink, frame, op_ret, op_errno, inode, buf, + preparent, postparent); + return 0; +} + + +int +mdc_symlink (call_frame_t *frame, xlator_t *this, const char *linkname, + loc_t *loc, dict_t *params) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + + local->linkname = strdup (linkname); + + STACK_WIND (frame, mdc_symlink_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->symlink, + linkname, loc, params); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postoldparent); + } + + if (local->loc.inode) { + /* TODO: fix dht_rename() not to return linkfile + attributes before setting attributes here + */ + + mdc_inode_iatt_set (this, local->loc.inode, NULL); + } + + if (local->loc2.parent) { + mdc_inode_iatt_set (this, local->loc2.parent, postnewparent); + } +out: + MDC_STACK_UNWIND (rename, frame, op_ret, op_errno, buf, + preoldparent, postoldparent, prenewparent, postnewparent); + return 0; +} + + +int +mdc_rename (call_frame_t *frame, xlator_t *this, + loc_t *oldloc, loc_t *newloc) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, oldloc); + loc_copy (&local->loc2, newloc); + + STACK_WIND (frame, mdc_rename_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->rename, + oldloc, newloc); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.inode) { + mdc_inode_iatt_set (this, local->loc.inode, buf); + } + + if (local->loc2.parent) { + mdc_inode_iatt_set (this, local->loc2.parent, postparent); + } +out: + MDC_STACK_UNWIND (link, frame, op_ret, op_errno, inode, buf, + preparent, postparent); + return 0; +} + + +int +mdc_link (call_frame_t *frame, xlator_t *this, + loc_t *oldloc, loc_t *newloc) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, oldloc); + loc_copy (&local->loc2, newloc); + + STACK_WIND (frame, mdc_link_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->link, + oldloc, newloc); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + if (local->loc.parent) { + mdc_inode_iatt_set (this, local->loc.parent, postparent); + } + + if (local->loc.inode) { + mdc_inode_iatt_set (this, inode, buf); + mdc_inode_xatt_set (this, local->loc.inode, local->xattr); + } +out: + MDC_STACK_UNWIND (create, frame, op_ret, op_errno, fd, inode, buf, + preparent, postparent); + return 0; +} + + +int +mdc_create (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags, + mode_t mode, fd_t *fd, dict_t *params) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + local->xattr = dict_ref (params); + + STACK_WIND (frame, mdc_create_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->create, + loc, flags, mode, fd, params); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->fd->inode, stbuf); + +out: + MDC_STACK_UNWIND (readv, frame, op_ret, op_errno, vector, count, + stbuf, iobref); + + return 0; +} + + +int +mdc_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t offset, uint32_t flags) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->fd = fd_ref (fd); + + STACK_WIND (frame, mdc_readv_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->readv, + fd, size, offset, flags); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret == -1) + goto out; + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->fd->inode, postbuf); + +out: + MDC_STACK_UNWIND (writev, frame, op_ret, op_errno, prebuf, postbuf); + + return 0; +} + + +int +mdc_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector, + int count, off_t offset, uint32_t flags, struct iobref *iobref) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->fd = fd_ref (fd); + + STACK_WIND (frame, mdc_writev_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->writev, + fd, vector, count, offset, flags, iobref); + return 0; +} + + +int +mdc_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *prebuf, struct iatt *postbuf) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) { + mdc_inode_iatt_set (this, local->loc.inode, NULL); + goto out; + } + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->loc.inode, postbuf); + +out: + MDC_STACK_UNWIND (setattr, frame, op_ret, op_errno, prebuf, postbuf); + + return 0; +} + + +int +mdc_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, + struct iatt *stbuf, int valid) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + + STACK_WIND (frame, mdc_setattr_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->setattr, + loc, stbuf, valid); + return 0; +} + + +int +mdc_fsetattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + struct iatt *prebuf, struct iatt *postbuf) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->fd->inode, postbuf); + +out: + MDC_STACK_UNWIND (fsetattr, frame, op_ret, op_errno, prebuf, postbuf); + + return 0; +} + + +int +mdc_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iatt *stbuf, int valid) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->fd = fd_ref (fd); + + STACK_WIND (frame, mdc_setattr_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->fsetattr, + fd, stbuf, valid); + return 0; +} + + +int +mdc_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) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_iatt_set (this, local->fd->inode, postbuf); + +out: + MDC_STACK_UNWIND (fsync, frame, op_ret, op_errno, prebuf, postbuf); + + return 0; +} + + +int +mdc_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int datasync) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->fd = fd_ref (fd); + + STACK_WIND (frame, mdc_fsync_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->fsync, + fd, datasync); + return 0; +} + + +int +mdc_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_xatt_update (this, local->loc.inode, local->xattr); + +out: + MDC_STACK_UNWIND (setxattr, frame, op_ret, op_errno); + + return 0; +} + + +int +mdc_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xattr, int flags) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + loc_copy (&local->loc, loc); + local->xattr = dict_ref (xattr); + + STACK_WIND (frame, mdc_setxattr_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->setxattr, + loc, xattr, flags); + return 0; +} + + +int +mdc_fsetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + mdc_local_t *local = NULL; + + local = frame->local; + + if (op_ret != 0) + goto out; + + if (!local) + goto out; + + mdc_inode_xatt_update (this, local->fd->inode, local->xattr); + +out: + MDC_STACK_UNWIND (fsetxattr, frame, op_ret, op_errno); + + return 0; +} + + +int +mdc_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, + dict_t *xattr, int flags) +{ + mdc_local_t *local = NULL; + + local = mdc_local_get (frame); + + local->fd = fd_ref (fd); + local->xattr = dict_ref (xattr); + + STACK_WIND (frame, mdc_fsetxattr_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->fsetxattr, + fd, xattr, flags); + return 0; +} + +int +mdc_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xattr) +{ + mdc_local_t *local = NULL; + + if (op_ret != 0) + goto out; + + local = frame->local; + if (!local) + goto out; + + mdc_inode_xatt_update (this, local->loc.inode, xattr); + +out: + MDC_STACK_UNWIND (getxattr, frame, op_ret, op_errno, xattr); + + return 0; +} + + +int +mdc_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, const char *key) +{ + int ret; + mdc_local_t *local = NULL; + dict_t *xattr = NULL; + + local = mdc_local_get (frame); + if (!local) + goto uncached; + + loc_copy (&local->loc, loc); + + if (!is_mdc_key_satisfied (key)) + goto uncached; + + ret = mdc_inode_xatt_get (this, loc->inode, &xattr); + if (ret != 0) + goto uncached; + + if (!dict_get (xattr, (char *)key)) + goto uncached; + + MDC_STACK_UNWIND (getxattr, frame, 0, 0, xattr); + + return 0; + +uncached: + STACK_WIND (frame, mdc_getxattr_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->getxattr, + loc, key); + return 0; +} + + +int +mdc_fgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, dict_t *xattr) +{ + mdc_local_t *local = NULL; + + if (op_ret != 0) + goto out; + + local = frame->local; + if (!local) + goto out; + + mdc_inode_xatt_update (this, local->fd->inode, xattr); + +out: + MDC_STACK_UNWIND (fgetxattr, frame, op_ret, op_errno, xattr); + + return 0; +} + + +int +mdc_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, const char *key) +{ + int ret; + mdc_local_t *local = NULL; + dict_t *xattr = NULL; + + local = mdc_local_get (frame); + if (!local) + goto uncached; + + local->fd = fd_ref (fd); + + if (!is_mdc_key_satisfied (key)) + goto uncached; + + ret = mdc_inode_xatt_get (this, fd->inode, &xattr); + if (ret != 0) + goto uncached; + + if (!dict_get (xattr, (char *)key)) + goto uncached; + + MDC_STACK_UNWIND (fgetxattr, frame, 0, 0, xattr); + + return 0; + +uncached: + STACK_WIND (frame, mdc_fgetxattr_cbk, + FIRST_CHILD(this), FIRST_CHILD(this)->fops->fgetxattr, + fd, key); + return 0; +} + + +int +mdc_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, gf_dirent_t *entries) +{ + gf_dirent_t *entry = NULL; + + if (op_ret <= 0) + goto unwind; + + list_for_each_entry (entry, &entries->list, list) { + if (!entry->inode) + continue; + mdc_inode_iatt_set (this, entry->inode, &entry->d_stat); + mdc_inode_xatt_set (this, entry->inode, entry->dict); + } + +unwind: + STACK_UNWIND_STRICT (readdirp, frame, op_ret, op_errno, entries); + return 0; +} + + +int +mdc_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, + size_t size, off_t offset, dict_t *xattr_req) +{ + STACK_WIND (frame, mdc_readdirp_cbk, + FIRST_CHILD (this), FIRST_CHILD (this)->fops->readdirp, + fd, size, offset, xattr_req); + return 0; +} + + +int +mdc_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd, + size_t size, off_t offset) +{ + dict_t *xattr_req = NULL; + + xattr_req = dict_new (); + + if (xattr_req) { + mdc_load_reqs (this, xattr_req); + } + + STACK_WIND (frame, mdc_readdirp_cbk, + FIRST_CHILD (this), FIRST_CHILD (this)->fops->readdirp, + fd, size, offset, xattr_req); + return 0; +} + + +int +mdc_forget (xlator_t *this, inode_t *inode) +{ + mdc_inode_wipe (this, inode); + + return 0; +} + + +int +reconfigure (xlator_t *this, dict_t *options) +{ + struct mdc_conf *conf = NULL; + + conf = this->private; + + GF_OPTION_RECONF ("timeout", conf->timeout, options, int32, out); +out: + return 0; +} + + +int +init (xlator_t *this) +{ + struct mdc_conf *conf = NULL; + + conf = GF_CALLOC (sizeof (*conf), 1, gf_mdc_mt_mdc_conf_t); + if (!conf) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory"); + return -1; + } + + GF_OPTION_INIT ("timeout", conf->timeout, int32, out); + +out: + this->private = conf; + + return 0; +} + + +void +fini (xlator_t *this) +{ + return; +} + + +struct xlator_fops fops = { + .lookup = mdc_lookup, + .stat = mdc_stat, + .fstat = mdc_fstat, + .truncate = mdc_truncate, + .ftruncate = mdc_ftruncate, + .mknod = mdc_mknod, + .mkdir = mdc_mkdir, + .unlink = mdc_unlink, + .rmdir = mdc_rmdir, + .symlink = mdc_symlink, + .rename = mdc_rename, + .link = mdc_link, + .create = mdc_create, + .readv = mdc_readv, + .writev = mdc_writev, + .setattr = mdc_setattr, + .fsetattr = mdc_fsetattr, + .fsync = mdc_fsync, + .setxattr = mdc_setxattr, + .fsetxattr = mdc_fsetxattr, + .getxattr = mdc_getxattr, + .fgetxattr = mdc_fgetxattr, + .readdirp = mdc_readdirp, + .readdir = mdc_readdir +}; + + +struct xlator_cbks cbks = { + .forget = mdc_forget, +}; + +struct volume_options options[] = { + { .key = {"timeout"}, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .max = 60, + .default_value = "1", + .description = "Time period after which cache has to be refreshed", + }, +}; |