diff options
Diffstat (limited to 'xlators/cluster/dht/src/dht-linkfile.c')
| -rw-r--r-- | xlators/cluster/dht/src/dht-linkfile.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/xlators/cluster/dht/src/dht-linkfile.c b/xlators/cluster/dht/src/dht-linkfile.c index 7acebd290e3..82419a68bc1 100644 --- a/xlators/cluster/dht/src/dht-linkfile.c +++ b/xlators/cluster/dht/src/dht-linkfile.c @@ -242,3 +242,143 @@ dht_linkfile_subvol (xlator_t *this, inode_t *inode, struct iatt *stbuf, out: return subvol; } + +int +dht_recreate_linkfile_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) +{ + dht_local_t *local = NULL; + xlator_t *subvol = NULL; + xlator_t *src_cached = NULL; + xlator_t *dst_hashed = NULL; + call_frame_t *prev = NULL; + loc_t *loc = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, err); + GF_VALIDATE_OR_GOTO ("dht", frame->local, err); + + local = frame->local; + prev = cookie; + subvol = prev->this; + src_cached = local->src_cached; + dst_hashed = local->dst_hashed; + loc = &local->loc; + + if (!src_cached || !dst_hashed) { + gf_log (this->name, GF_LOG_ERROR, "src_cached or dst_hashed" + "subvol is null"); + local->op_ret = -1; + local->op_errno = EINVAL; + goto out; + } + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_ERROR, + "unlinking linkfile %s on %s failed (%s)", + loc->path, subvol->name, strerror (op_errno)); + local->op_ret = op_ret; + local->op_errno = op_errno; + goto out; + } + gf_log (this->name, GF_LOG_DEBUG, "unlink successfull. Proceeding with" + " creation of link file %s", loc->path); + dht_linkfile_create (frame, local->linkfile.linkfile_cbk, + src_cached, dst_hashed, loc); + + return 0; +out: + local->linkfile.linkfile_cbk (frame, NULL, frame->this, -1, EINVAL, + local->loc.inode, NULL, NULL, NULL); +err: + return -1; +} + +int +dht_linkfile_recreate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, + inode_t *inode, struct iatt *stbuf, dict_t *xattr, + struct iatt *postparent) +{ + dht_local_t *local = NULL; + xlator_t *src_cached = NULL; + xlator_t *dst_hashed = NULL; + loc_t *loc = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, err); + GF_VALIDATE_OR_GOTO ("dht", this, err); + GF_VALIDATE_OR_GOTO ("dht", frame->local, err); + + local = frame->local; + loc = &local->loc; + + src_cached = local->src_cached; + dst_hashed = local->dst_hashed; + + if (!src_cached || !dst_hashed) { + gf_log (this->name, GF_LOG_ERROR, "src_cached or dst_hashed" + " or hashed_subvol is null"); + local->op_ret = -1; + local->op_errno = EINVAL; + goto out; + } + + /* if link_file exists, remove it, else create it*/ + if (!op_ret) { + if (!check_is_linkfile (inode, stbuf, xattr)) + goto out; + gf_log (this->name, GF_LOG_DEBUG, "link file exists." + " Calling unlink on %s", loc->path); + STACK_WIND (frame, dht_recreate_linkfile_unlink_cbk, + dst_hashed, dst_hashed->fops->unlink, + loc); + + } else if (op_errno == ENOENT) { + gf_log (this->name, GF_LOG_DEBUG, "link file does not exist." + " Proceeding to creation of linkfile %s", loc->path); + dht_linkfile_create (frame, local->linkfile.linkfile_cbk, + src_cached, dst_hashed, loc); + } else { + gf_log (this->name, GF_LOG_ERROR, "returned error %s", + strerror(op_errno)); + local->op_ret = op_ret; + local->op_errno = op_errno; + goto out; + } + + return 0; +out: + local->linkfile.linkfile_cbk (frame, NULL, frame->this, -1, EINVAL, + loc->inode, NULL, NULL, NULL); +err: + return -1; +} + +int +dht_linkfile_recreate (call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk, + xlator_t *tovol, xlator_t *fromvol, loc_t *loc) +{ + dht_local_t *local = NULL; + + GF_VALIDATE_OR_GOTO ("dht", frame, out); + GF_VALIDATE_OR_GOTO ("dht", loc, out); + GF_VALIDATE_OR_GOTO ("dht", tovol, out); + GF_VALIDATE_OR_GOTO ("dht", fromvol, out); + + local = frame->local; + local->linkfile.linkfile_cbk = linkfile_cbk; + local->linkfile.srcvol = tovol; + loc_copy (&local->linkfile.loc, loc); + + STACK_WIND (frame, dht_linkfile_recreate_cbk, + fromvol, fromvol->fops->lookup, loc, NULL); + + return 0; + +out: + linkfile_cbk (frame, NULL, frame->this, -1, EINVAL, loc->inode, NULL, + NULL, NULL); + + return -1; +} |