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-rw-r--r--xlators/protocol/server/src/server-resolve.c457
1 files changed, 196 insertions, 261 deletions
diff --git a/xlators/protocol/server/src/server-resolve.c b/xlators/protocol/server/src/server-resolve.c
index 0b0487a24..cc4686a03 100644
--- a/xlators/protocol/server/src/server-resolve.c
+++ b/xlators/protocol/server/src/server-resolve.c
@@ -1,20 +1,11 @@
/*
- Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
+ Copyright (c) 2010-2013 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 Affero 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
- Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see
- <http://www.gnu.org/licenses/>.
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
*/
#ifndef _CONFIG_H
@@ -33,74 +24,9 @@ resolve_entry_simple (call_frame_t *frame);
int
resolve_inode_simple (call_frame_t *frame);
int
-resolve_path_simple (call_frame_t *frame);
-
-int
-component_count (const char *path)
-{
- int count = 0;
- const char *trav = NULL;
-
- for (trav = path; *trav; trav++) {
- if (*trav == '/')
- count++;
- }
-
- return count + 2;
-}
-
-
+resolve_continue (call_frame_t *frame);
int
-prepare_components (call_frame_t *frame)
-{
- server_state_t *state = NULL;
- server_resolve_t *resolve = NULL;
- char *resolved = NULL;
- int count = 0;
- struct resolve_comp *components = NULL;
- int i = 0;
- char *trav = NULL;
-
- state = CALL_STATE (frame);
- resolve = state->resolve_now;
-
- resolved = gf_strdup (resolve->path);
- resolve->resolved = resolved;
-
- count = component_count (resolve->path);
- components = GF_CALLOC (sizeof (*components), count,
- gf_server_mt_resolv_comp_t);
- if (!components)
- goto out;
-
- resolve->components = components;
-
- components[0].basename = "";
- components[0].ino = 1;
- components[0].gen = 0;
- components[0].inode = state->itable->root;
-
- i = 1;
- for (trav = resolved; *trav; trav++) {
- if (*trav == '/') {
- *trav = 0;
-
- if (!(*(trav + 1))) {
- /* Skip trailing "/" in a path.
- This is the check which prevents
- inode_link'age of itable->root
- */
- break;
- }
-
- components[i].basename = trav + 1;
- i++;
- }
- }
-out:
- return 0;
-}
-
+resolve_anonfd_simple (call_frame_t *frame);
int
resolve_loc_touchup (call_frame_t *frame)
@@ -125,231 +51,175 @@ resolve_loc_touchup (call_frame_t *frame)
if (ret)
gf_log (frame->this->name, GF_LOG_TRACE,
"return value inode_path %d", ret);
-
- if (!path)
- path = gf_strdup (resolve->path);
-
loc->path = path;
}
- loc->name = strrchr (loc->path, '/');
- if (loc->name)
- loc->name++;
-
- if (!loc->parent && loc->inode) {
- loc->parent = inode_parent (loc->inode, 0, NULL);
- }
-
return 0;
}
int
-resolve_deep_continue (call_frame_t *frame)
+resolve_gfid_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, inode_t *inode,
+ struct iatt *buf, dict_t *xdata,
+ struct iatt *postparent)
{
server_state_t *state = NULL;
- xlator_t *this = NULL;
server_resolve_t *resolve = NULL;
- int ret = 0;
+ inode_t *link_inode = NULL;
+ loc_t *resolve_loc = NULL;
state = CALL_STATE (frame);
- this = frame->this;
resolve = state->resolve_now;
+ resolve_loc = &resolve->resolve_loc;
- resolve->op_ret = 0;
- resolve->op_errno = 0;
+ if (op_ret == -1) {
+ gf_log (this->name, ((op_errno == ENOENT) ? GF_LOG_DEBUG :
+ GF_LOG_WARNING),
+ "%s/%s: failed to resolve (%s)",
+ uuid_utoa (resolve_loc->pargfid), resolve_loc->name,
+ strerror (op_errno));
+ goto out;
+ }
- if (!uuid_is_null (resolve->pargfid))
- ret = resolve_entry_simple (frame);
- else if (!uuid_is_null (resolve->gfid))
- ret = resolve_inode_simple (frame);
- else if (resolve->path)
- ret = resolve_path_simple (frame);
- if (ret)
- gf_log (this->name, GF_LOG_DEBUG,
- "return value of resolve_*_simple %d", ret);
+ link_inode = inode_link (inode, resolve_loc->parent,
+ resolve_loc->name, buf);
- resolve_loc_touchup (frame);
+ if (!link_inode)
+ goto out;
- server_resolve_all (frame);
+ inode_lookup (link_inode);
+
+ inode_unref (link_inode);
+
+out:
+ loc_wipe (resolve_loc);
+ resolve_continue (frame);
return 0;
}
int
-resolve_deep_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+resolve_gfid_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int op_ret, int op_errno, inode_t *inode, struct iatt *buf,
- dict_t *xattr, struct iatt *postparent)
+ dict_t *xdata, struct iatt *postparent)
{
server_state_t *state = NULL;
server_resolve_t *resolve = NULL;
- struct resolve_comp *components = NULL;
- int i = 0;
inode_t *link_inode = NULL;
+ loc_t *resolve_loc = NULL;
state = CALL_STATE (frame);
resolve = state->resolve_now;
- components = resolve->components;
-
- i = (long) cookie;
+ resolve_loc = &resolve->resolve_loc;
if (op_ret == -1) {
gf_log (this->name, ((op_errno == ENOENT) ? GF_LOG_DEBUG :
GF_LOG_WARNING),
"%s: failed to resolve (%s)",
- resolve->resolved, strerror (op_errno));
- goto get_out_of_here;
+ uuid_utoa (resolve_loc->gfid), strerror (op_errno));
+ loc_wipe (&resolve->resolve_loc);
+ goto out;
}
- if (i != 0) {
- /* no linking for root inode */
- link_inode = inode_link (inode, resolve->deep_loc.parent,
- resolve->deep_loc.name, buf);
- inode_lookup (link_inode);
- components[i].inode = link_inode;
- link_inode = NULL;
- }
+ loc_wipe (resolve_loc);
- loc_wipe (&resolve->deep_loc);
+ link_inode = inode_link (inode, NULL, NULL, buf);
- i++; /* next component */
+ if (!link_inode)
+ goto out;
+
+ inode_lookup (link_inode);
- if (!components[i].basename) {
- /* all components of the path are resolved */
- goto get_out_of_here;
+ if (uuid_is_null (resolve->pargfid)) {
+ inode_unref (link_inode);
+ goto out;
}
- /* join the current component with the path resolved until now */
- *(components[i].basename - 1) = '/';
+ resolve_loc->parent = link_inode;
+ uuid_copy (resolve_loc->pargfid, resolve_loc->parent->gfid);
- resolve->deep_loc.path = gf_strdup (resolve->resolved);
- resolve->deep_loc.parent = inode_ref (components[i-1].inode);
- resolve->deep_loc.inode = inode_new (state->itable);
- resolve->deep_loc.name = components[i].basename;
+ resolve_loc->name = resolve->bname;
- if (frame && frame->root->state && BOUND_XL (frame)) {
- STACK_WIND_COOKIE (frame, resolve_deep_cbk, (void *) (long) i,
- BOUND_XL (frame), BOUND_XL (frame)->fops->lookup,
- &resolve->deep_loc, NULL);
- return 0;
- }
+ resolve_loc->inode = inode_new (state->itable);
+ inode_path (resolve_loc->parent, resolve_loc->name,
+ (char **) &resolve_loc->path);
-get_out_of_here:
- resolve_deep_continue (frame);
+ STACK_WIND (frame, resolve_gfid_entry_cbk,
+ frame->root->client->bound_xl,
+ frame->root->client->bound_xl->fops->lookup,
+ &resolve->resolve_loc, NULL);
+ return 0;
+out:
+ resolve_continue (frame);
return 0;
}
int
-resolve_path_deep (call_frame_t *frame)
+resolve_gfid (call_frame_t *frame)
{
- server_state_t *state = NULL;
- server_resolve_t *resolve = NULL;
- int i = 0;
+ server_state_t *state = NULL;
+ xlator_t *this = NULL;
+ server_resolve_t *resolve = NULL;
+ loc_t *resolve_loc = NULL;
+ int ret = 0;
state = CALL_STATE (frame);
+ this = frame->this;
resolve = state->resolve_now;
+ resolve_loc = &resolve->resolve_loc;
- gf_log (BOUND_XL (frame)->name, GF_LOG_DEBUG,
- "RESOLVE %s() seeking deep resolution of %s",
- gf_fop_list[frame->root->op], resolve->path);
-
- prepare_components (frame);
-
- /* start from the root */
- resolve->deep_loc.inode = state->itable->root;
- resolve->deep_loc.path = gf_strdup ("/");
- resolve->deep_loc.name = "";
+ if (!uuid_is_null (resolve->pargfid))
+ uuid_copy (resolve_loc->gfid, resolve->pargfid);
+ else if (!uuid_is_null (resolve->gfid))
+ uuid_copy (resolve_loc->gfid, resolve->gfid);
- if (frame && frame->root->state && BOUND_XL (frame)) {
- STACK_WIND_COOKIE (frame, resolve_deep_cbk, (void *) (long) i,
- BOUND_XL (frame), BOUND_XL (frame)->fops->lookup,
- &resolve->deep_loc, NULL);
- return 0;
- }
+ resolve_loc->inode = inode_new (state->itable);
+ ret = loc_path (resolve_loc, NULL);
- resolve_deep_continue (frame);
+ STACK_WIND (frame, resolve_gfid_cbk,
+ frame->root->client->bound_xl,
+ frame->root->client->bound_xl->fops->lookup,
+ &resolve->resolve_loc, NULL);
return 0;
}
-
int
-resolve_path_simple (call_frame_t *frame)
+resolve_continue (call_frame_t *frame)
{
server_state_t *state = NULL;
+ xlator_t *this = NULL;
server_resolve_t *resolve = NULL;
- struct resolve_comp *components = NULL;
- int ret = -1;
- int par_idx = -1;
- int ino_idx = -1;
- int i = 0;
+ int ret = 0;
state = CALL_STATE (frame);
+ this = frame->this;
resolve = state->resolve_now;
- components = resolve->components;
- if (!components) {
- gf_log ("", GF_LOG_INFO,
- "failed to resolve, component not found");
- resolve->op_ret = -1;
- resolve->op_errno = ENOENT;
- goto out;
- }
-
- for (i = 0; components[i].basename; i++) {
- par_idx = ino_idx;
- ino_idx = i;
- }
-
- if (ino_idx == -1) {
- gf_log ("", GF_LOG_INFO,
- "failed to resolve, inode index not found");
- resolve->op_ret = -1;
- resolve->op_errno = EINVAL;
- goto out;
- }
-
- if (par_idx == -1)
- /* "/" will not have a parent */
- goto noparent;
-
- if (!components[par_idx].inode) {
- gf_log ("", GF_LOG_INFO,
- "failed to resolve, parent inode not found");
- resolve->op_ret = -1;
- resolve->op_errno = ENOENT;
- goto out;
- }
- state->loc_now->parent = inode_ref (components[par_idx].inode);
-noparent:
-
- if (!components[ino_idx].inode &&
- (resolve->type == RESOLVE_MUST || resolve->type == RESOLVE_EXACT)) {
- gf_log ("", GF_LOG_INFO,
- "failed to resolve, inode not found");
- resolve->op_ret = -1;
- resolve->op_errno = ENOENT;
- goto out;
- }
+ resolve->op_ret = 0;
+ resolve->op_errno = 0;
- if (components[ino_idx].inode && resolve->type == RESOLVE_NOT) {
- gf_log ("", GF_LOG_INFO,
- "failed to resolve, inode found");
- resolve->op_ret = -1;
- resolve->op_errno = EEXIST;
+ if (resolve->fd_no != -1) {
+ ret = resolve_anonfd_simple (frame);
goto out;
- }
-
- if (components[ino_idx].inode)
- state->loc_now->inode = inode_ref (components[ino_idx].inode);
-
- ret = 0;
+ } else if (!uuid_is_null (resolve->pargfid))
+ ret = resolve_entry_simple (frame);
+ else if (!uuid_is_null (resolve->gfid))
+ ret = resolve_inode_simple (frame);
+ if (ret)
+ gf_log (this->name, GF_LOG_DEBUG,
+ "return value of resolve_*_simple %d", ret);
+ resolve_loc_touchup (frame);
out:
- return ret;
+ server_resolve_all (frame);
+
+ return 0;
}
+
/*
Check if the requirements are fulfilled by entries in the inode cache itself
Return value:
@@ -378,20 +248,13 @@ resolve_entry_simple (call_frame_t *frame)
resolve->op_ret = -1;
resolve->op_errno = ENOENT;
ret = 1;
-
- inode = inode_grep (state->itable, parent, resolve->bname);
- if (inode != NULL) {
- gf_log (this->name, GF_LOG_DEBUG, "%"PRId64": inode "
- "(pointer:%p ino: %"PRIu64") present but parent"
- " is NULL for path (%s)", frame->root->unique,
- inode, inode->ino, resolve->path);
- inode_unref (inode);
- }
goto out;
}
/* expected @parent was found from the inode cache */
+ uuid_copy (state->loc_now->pargfid, resolve->pargfid);
state->loc_now->parent = inode_ref (parent);
+ state->loc_now->name = resolve->bname;
inode = inode_grep (state->itable, parent, resolve->bname);
if (!inode) {
@@ -414,9 +277,9 @@ resolve_entry_simple (call_frame_t *frame)
}
if (resolve->type == RESOLVE_NOT) {
- gf_log (this->name, GF_LOG_INFO, "inode (pointer: %p ino:%"
- PRIu64") found for path (%s) while type is RESOLVE_NOT",
- inode, inode->ino, resolve->path);
+ gf_log (this->name, GF_LOG_DEBUG, "inode (pointer: %p gfid:%s"
+ " found for path (%s) while type is RESOLVE_NOT",
+ inode, uuid_utoa (inode->gfid), resolve->path);
resolve->op_ret = -1;
resolve->op_errno = EEXIST;
ret = -1;
@@ -452,7 +315,7 @@ server_resolve_entry (call_frame_t *frame)
if (ret > 0) {
loc_wipe (loc);
- resolve_path_deep (frame);
+ resolve_gfid (frame);
return 0;
}
@@ -488,6 +351,7 @@ resolve_inode_simple (call_frame_t *frame)
ret = 0;
state->loc_now->inode = inode_ref (inode);
+ uuid_copy (state->loc_now->gfid, resolve->gfid);
out:
if (inode)
@@ -511,7 +375,7 @@ server_resolve_inode (call_frame_t *frame)
if (ret > 0) {
loc_wipe (loc);
- resolve_path_deep (frame);
+ resolve_gfid (frame);
return 0;
}
@@ -525,20 +389,96 @@ server_resolve_inode (call_frame_t *frame)
int
+resolve_anonfd_simple (call_frame_t *frame)
+{
+ server_state_t *state = NULL;
+ server_resolve_t *resolve = NULL;
+ inode_t *inode = NULL;
+ int ret = 0;
+
+ state = CALL_STATE (frame);
+ resolve = state->resolve_now;
+
+ inode = inode_find (state->itable, resolve->gfid);
+
+ if (!inode) {
+ resolve->op_ret = -1;
+ resolve->op_errno = ENOENT;
+ ret = 1;
+ goto out;
+ }
+
+ ret = 0;
+
+ state->fd = fd_anonymous (inode);
+out:
+ if (inode)
+ inode_unref (inode);
+
+ if (ret != 0)
+ gf_log ("server", GF_LOG_WARNING, "inode for the gfid (%s) is "
+ "not found. anonymous fd creation failed",
+ uuid_utoa (resolve->gfid));
+ return ret;
+}
+
+
+int
+server_resolve_anonfd (call_frame_t *frame)
+{
+ server_state_t *state = NULL;
+ int ret = 0;
+ loc_t *loc = NULL;
+
+ state = CALL_STATE (frame);
+ loc = state->loc_now;
+
+ ret = resolve_anonfd_simple (frame);
+
+ if (ret > 0) {
+ loc_wipe (loc);
+ resolve_gfid (frame);
+ return 0;
+ }
+
+ server_resolve_all (frame);
+
+ return 0;
+
+}
+
+
+int
server_resolve_fd (call_frame_t *frame)
{
- server_state_t *state = NULL;
- server_resolve_t *resolve = NULL;
- server_connection_t *conn = NULL;
- uint64_t fd_no = -1;
+ server_ctx_t *serv_ctx = NULL;
+ server_state_t *state = NULL;
+ client_t *client = NULL;
+ server_resolve_t *resolve = NULL;
+ uint64_t fd_no = -1;
state = CALL_STATE (frame);
resolve = state->resolve_now;
- conn = SERVER_CONNECTION (frame);
fd_no = resolve->fd_no;
- state->fd = gf_fd_fdptr_get (conn->fdtable, fd_no);
+ if (fd_no == GF_ANON_FD_NO) {
+ server_resolve_anonfd (frame);
+ return 0;
+ }
+
+ client = frame->root->client;
+
+ serv_ctx = server_ctx_get (client, client->this);
+
+ if (serv_ctx == NULL) {
+ gf_log ("", GF_LOG_INFO, "server_ctx_get() failed");
+ resolve->op_ret = -1;
+ resolve->op_errno = ENOMEM;
+ return 0;
+ }
+
+ state->fd = gf_fd_fdptr_get (serv_ctx->fdtable, fd_no);
if (!state->fd) {
gf_log ("", GF_LOG_INFO, "fd not found in context");
@@ -573,14 +513,11 @@ server_resolve (call_frame_t *frame)
server_resolve_inode (frame);
- } else if (resolve->path) {
-
- gf_log (frame->this->name, GF_LOG_INFO,
- "pure path resolution for %s (%s)",
- resolve->path, gf_fop_list[frame->root->op]);
- resolve_path_deep (frame);
-
- } else {
+ } else {
+ if (resolve == &state->resolve)
+ gf_log (frame->this->name, GF_LOG_WARNING,
+ "no resolution type for %s (%s)",
+ resolve->path, gf_fop_list[frame->root->op]);
resolve->op_ret = -1;
resolve->op_errno = EINVAL;
@@ -596,14 +533,12 @@ int
server_resolve_done (call_frame_t *frame)
{
server_state_t *state = NULL;
- xlator_t *bound_xl = NULL;
state = CALL_STATE (frame);
- bound_xl = BOUND_XL (frame);
server_print_request (frame);
- state->resume_fn (frame, bound_xl);
+ state->resume_fn (frame, frame->root->client->bound_xl);
return 0;
}
generated by cgit (git 2.34.1) at 2025-12-28 17:57:50 +0000