diff options
Diffstat (limited to 'xlators/cluster/stripe/src/stripe.c')
| -rw-r--r-- | xlators/cluster/stripe/src/stripe.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/xlators/cluster/stripe/src/stripe.c b/xlators/cluster/stripe/src/stripe.c index 81f37a57277..72762555aa0 100644 --- a/xlators/cluster/stripe/src/stripe.c +++ b/xlators/cluster/stripe/src/stripe.c @@ -4255,6 +4255,166 @@ out: return 0; } +int32_t +stripe_pathinfo_aggregate (char *buffer, stripe_local_t *local, int32_t *total) +{ + int32_t i = 0; + int32_t ret = -1; + int32_t len = 0; + char *sbuf = NULL; + stripe_xattr_sort_t *xattr = NULL; + + if (!buffer || !local || !local->xattr_list) + goto out; + + sbuf = buffer; + + for (i = 0; i < local->nallocs; i++) { + xattr = local->xattr_list + i; + len = xattr->pathinfo_len; + + if (len && xattr && xattr->pathinfo) { + memcpy (buffer, xattr->pathinfo, len); + buffer += len; + *buffer++ = ' '; + } + } + + *--buffer = '\0'; + if (total) + *total = buffer - sbuf; + ret = 0; + + out: + return ret; +} + +int32_t +stripe_free_pathinfo_str (stripe_local_t *local) +{ + int32_t i = 0; + int32_t ret = -1; + stripe_xattr_sort_t *xattr = NULL; + + if (!local || !local->xattr_list) + goto out; + + for (i = 0; i < local->nallocs; i++) { + xattr = local->xattr_list + i; + + if (xattr && xattr->pathinfo) + GF_FREE (xattr->pathinfo); + } + + ret = 0; + out: + return ret; +} + +int32_t +stripe_getxattr_pathinfo_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict) { + stripe_local_t *local = NULL; + int32_t callcnt = 0; + int32_t ret = -1; + long cky = 0; + char *pathinfo = NULL; + char *pathinfo_serz = NULL; + int32_t padding = 0; + int32_t tlen = 0; + char stripe_size_str[20] = {0,}; + stripe_xattr_sort_t *xattr = NULL; + dict_t *stripe_xattr = NULL; + + if (!frame || !frame->local || !this) { + gf_log (this->name, GF_LOG_ERROR, "Possible NULL deref"); + return ret; + } + + local = frame->local; + cky = (long) cookie; + + LOCK (&frame->lock); + { + callcnt = --local->wind_count; + + if (!dict || (op_ret < 0)) + goto out; + + if (!local->xattr_list) + local->xattr_list = (stripe_xattr_sort_t *) GF_CALLOC (local->nallocs, + sizeof (stripe_xattr_sort_t), + gf_stripe_mt_xattr_sort_t); + + if (local->xattr_list) { + ret = dict_get_str (dict, GF_XATTR_PATHINFO_KEY, &pathinfo); + if (ret) + goto out; + + xattr = local->xattr_list + (int32_t) cky; + + pathinfo = gf_strdup (pathinfo); + xattr->pos = cky; + xattr->pathinfo = pathinfo; + xattr->pathinfo_len = strlen (pathinfo); + + local->xattr_total_len += strlen (pathinfo) + 1; + } + } + out: + UNLOCK (&frame->lock); + + if (!callcnt) { + if (!local->xattr_total_len) + goto unwind; + + stripe_xattr = dict_new (); + if (!stripe_xattr) + goto unwind; + + snprintf (stripe_size_str, 20, "%ld", local->stripe_size); + + /* extra bytes for decorations (brackets and <>'s) */ + padding = strlen (this->name) + strlen (STRIPE_PATHINFO_HEADER) + + strlen (stripe_size_str) + 7; + local->xattr_total_len += (padding + 2); + + pathinfo_serz = GF_CALLOC (local->xattr_total_len, sizeof (char), + gf_common_mt_char); + if (!pathinfo_serz) + goto unwind; + + /* xlator info */ + sprintf (pathinfo_serz, "(<"STRIPE_PATHINFO_HEADER"%s:[%s]> ", this->name, stripe_size_str); + + ret = stripe_pathinfo_aggregate (pathinfo_serz + padding, local, &tlen); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Cannot aggregate pathinfo list"); + goto unwind; + } + + *(pathinfo_serz + padding + tlen) = ')'; + *(pathinfo_serz + padding + tlen + 1) = '\0'; + + ret = dict_set_dynstr (stripe_xattr, GF_XATTR_PATHINFO_KEY, pathinfo_serz); + if (ret) + gf_log (this->name, GF_LOG_ERROR, "Cannot set pathinfo key in dict"); + + unwind: + STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, stripe_xattr); + + ret = stripe_free_pathinfo_str (local); + + if (local->xattr_list) + GF_FREE (local->xattr_list); + + if (stripe_xattr) + dict_unref (stripe_xattr); + } + + return ret; +} int32_t stripe_getxattr (call_frame_t *frame, xlator_t *this, @@ -4326,6 +4486,24 @@ stripe_getxattr (call_frame_t *frame, xlator_t *this, return 0; } + if (name && (strncmp (name, GF_XATTR_PATHINFO_KEY, + strlen (GF_XATTR_PATHINFO_KEY)) == 0)) { + local->stripe_size = stripe_get_matching_bs (loc->path, + priv->pattern, + priv->block_size); + local->nallocs = local->wind_count = priv->child_count; + + for (i = 0, trav = this->children; i < priv->child_count; i++, + trav = trav->next) { + STACK_WIND_COOKIE (frame, stripe_getxattr_pathinfo_cbk, + (void *) (long) i, trav->xlator, + trav->xlator->fops->getxattr, + loc, name); + } + + return 0; + } + if (name &&(*priv->vol_uuid)) { if ((match_uuid_local (name, priv->vol_uuid) == 0) && (-1 == frame->root->pid)) { |