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Diffstat (limited to 'libglusterfs/src/xlator.c')
-rw-r--r--libglusterfs/src/xlator.c289
1 files changed, 190 insertions, 99 deletions
diff --git a/libglusterfs/src/xlator.c b/libglusterfs/src/xlator.c
index 428357633..a277c58a8 100644
--- a/libglusterfs/src/xlator.c
+++ b/libglusterfs/src/xlator.c
@@ -1,20 +1,11 @@
/*
- Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com>
+ Copyright (c) 2008-2012 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/>.
+ 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
@@ -88,6 +79,9 @@ fill_defaults (xlator_t *xl)
SET_DEFAULT_FOP (fxattrop);
SET_DEFAULT_FOP (setattr);
SET_DEFAULT_FOP (fsetattr);
+ SET_DEFAULT_FOP (fallocate);
+ SET_DEFAULT_FOP (discard);
+ SET_DEFAULT_FOP (zerofill);
SET_DEFAULT_FOP (getspec);
@@ -128,18 +122,9 @@ xlator_volopt_dynload (char *xlator_type, void **dl_handle,
int ret = -1;
char *name = NULL;
void *handle = NULL;
- volume_opt_list_t *vol_opt = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xlator_type, out);
- GF_ASSERT (dl_handle);
-
- if (*dl_handle)
- if (dlclose (*dl_handle))
- gf_log ("xlator", GF_LOG_WARNING, "Unable to close "
- "previously opened handle( may be stale)."
- "Ignoring the invalid handle");
-
ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xlator_type);
if (-1 == ret) {
gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");
@@ -155,28 +140,20 @@ xlator_volopt_dynload (char *xlator_type, void **dl_handle,
gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());
goto out;
}
- *dl_handle = handle;
-
- vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
- gf_common_mt_volume_opt_list_t);
-
- if (!vol_opt) {
- goto out;
- }
-
- if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
+ if (!(opt_list->given_opt = dlsym (handle, "options"))) {
dlerror ();
- gf_log ("xlator", GF_LOG_DEBUG,
- "Strict option validation not enforced -- neglecting");
+ gf_log ("xlator", GF_LOG_ERROR,
+ "Failed to load xlator opt table");
+ goto out;
}
- opt_list->given_opt = vol_opt->given_opt;
- INIT_LIST_HEAD (&vol_opt->list);
- list_add_tail (&vol_opt->list, &opt_list->list);
+ *dl_handle = handle;
ret = 0;
out:
+ GF_FREE (name);
+
gf_log ("xlator", GF_LOG_DEBUG, "Returning %d", ret);
return ret;
@@ -190,7 +167,7 @@ xlator_dynload (xlator_t *xl)
char *name = NULL;
void *handle = NULL;
volume_opt_list_t *vol_opt = NULL;
-
+ class_methods_t *vtbl = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xl, out);
@@ -225,40 +202,55 @@ xlator_dynload (xlator_t *xl)
goto out;
}
- if (!(xl->init = dlsym (handle, "init"))) {
- gf_log ("xlator", GF_LOG_WARNING, "dlsym(init) on %s",
- dlerror ());
- goto out;
- }
+ /*
+ * If class_methods exists, its contents override any definitions of
+ * init or fini for that translator. Otherwise, we fall back to the
+ * older method of looking for init and fini directly.
+ */
+ vtbl = dlsym(handle,"class_methods");
+ if (vtbl) {
+ xl->init = vtbl->init;
+ xl->fini = vtbl->fini;
+ xl->reconfigure = vtbl->reconfigure;
+ xl->notify = vtbl->notify;
+ }
+ else {
+ if (!(*VOID(&xl->init) = dlsym (handle, "init"))) {
+ gf_log ("xlator", GF_LOG_WARNING, "dlsym(init) on %s",
+ dlerror ());
+ goto out;
+ }
- if (!(xl->fini = dlsym (handle, "fini"))) {
- gf_log ("xlator", GF_LOG_WARNING, "dlsym(fini) on %s",
- dlerror ());
- goto out;
- }
+ if (!(*VOID(&(xl->fini)) = dlsym (handle, "fini"))) {
+ gf_log ("xlator", GF_LOG_WARNING, "dlsym(fini) on %s",
+ dlerror ());
+ goto out;
+ }
+ if (!(*VOID(&(xl->reconfigure)) = dlsym (handle,
+ "reconfigure"))) {
+ gf_log ("xlator", GF_LOG_TRACE,
+ "dlsym(reconfigure) on %s -- neglecting",
+ dlerror());
+ }
+ if (!(*VOID(&(xl->notify)) = dlsym (handle, "notify"))) {
+ gf_log ("xlator", GF_LOG_TRACE,
+ "dlsym(notify) on %s -- neglecting",
+ dlerror ());
+ }
- if (!(xl->notify = dlsym (handle, "notify"))) {
- gf_log ("xlator", GF_LOG_DEBUG,
- "dlsym(notify) on %s -- neglecting", dlerror ());
}
if (!(xl->dumpops = dlsym (handle, "dumpops"))) {
- gf_log ("xlator", GF_LOG_DEBUG,
+ gf_log ("xlator", GF_LOG_TRACE,
"dlsym(dumpops) on %s -- neglecting", dlerror ());
}
- if (!(xl->mem_acct_init = dlsym (handle, "mem_acct_init"))) {
- gf_log (xl->name, GF_LOG_DEBUG,
+ if (!(*VOID(&(xl->mem_acct_init)) = dlsym (handle, "mem_acct_init"))) {
+ gf_log (xl->name, GF_LOG_TRACE,
"dlsym(mem_acct_init) on %s -- neglecting",
dlerror ());
}
- if (!(xl->reconfigure = dlsym (handle, "reconfigure"))) {
- gf_log ("xlator", GF_LOG_DEBUG,
- "dlsym(reconfigure) on %s -- neglecting",
- dlerror());
- }
-
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
@@ -268,9 +260,10 @@ xlator_dynload (xlator_t *xl)
if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
dlerror ();
- gf_log (xl->name, GF_LOG_DEBUG,
+ gf_log (xl->name, GF_LOG_TRACE,
"Strict option validation not enforced -- neglecting");
}
+ INIT_LIST_HEAD (&vol_opt->list);
list_add_tail (&vol_opt->list, &xl->volume_options);
fill_defaults (xl);
@@ -278,8 +271,7 @@ xlator_dynload (xlator_t *xl)
ret = 0;
out:
- if (name)
- GF_FREE (name);
+ GF_FREE (name);
return ret;
}
@@ -329,6 +321,24 @@ out:
}
+void
+xlator_foreach_depth_first (xlator_t *this,
+ void (*fn)(xlator_t *each, void *data),
+ void *data)
+{
+ xlator_list_t *subv = NULL;
+
+ subv = this->children;
+
+ while (subv) {
+ xlator_foreach_depth_first (subv->xlator, fn, data);
+ subv = subv->next;
+ }
+
+ fn (this, data);
+}
+
+
xlator_t *
xlator_search_by_name (xlator_t *any, const char *name)
{
@@ -352,7 +362,6 @@ out:
return search;
}
-
static int
__xlator_init(xlator_t *xl)
{
@@ -430,6 +439,9 @@ xlator_fini_rec (xlator_t *xl)
xl->fini (xl);
+ if (xl->local_pool)
+ mem_pool_destroy (xl->local_pool);
+
THIS = old_THIS;
} else {
gf_log (xl->name, GF_LOG_DEBUG, "No fini() found");
@@ -465,12 +477,12 @@ xlator_mem_acct_init (xlator_t *xl, int num_types)
int i = 0;
int ret = 0;
- if (!gf_mem_acct_is_enabled())
- return 0;
-
if (!xl)
return -1;
+ if (!xl->ctx->mem_acct_enable)
+ return 0;
+
xl->mem_acct.num_types = num_types;
xl->mem_acct.rec = CALLOC(num_types, sizeof(struct mem_acct_rec));
@@ -504,10 +516,26 @@ out:
return;
}
+int
+xlator_list_destroy (xlator_list_t *list)
+{
+ xlator_list_t *next = NULL;
+
+ while (list) {
+ next = list->next;
+ GF_FREE (list);
+ list = next;
+ }
+
+ return 0;
+}
+
int
xlator_tree_free (xlator_t *tree)
{
+ volume_opt_list_t *vol_opt = NULL;
+ volume_opt_list_t *tmp = NULL;
xlator_t *trav = tree;
xlator_t *prev = tree;
@@ -518,9 +546,19 @@ xlator_tree_free (xlator_t *tree)
while (prev) {
trav = prev->next;
- dict_destroy (prev->options);
+ if (prev->dlhandle)
+ dlclose (prev->dlhandle);
+ dict_unref (prev->options);
GF_FREE (prev->name);
GF_FREE (prev->type);
+ xlator_list_destroy (prev->children);
+ xlator_list_destroy (prev->parents);
+
+ list_for_each_entry_safe (vol_opt, tmp, &prev->volume_options,
+ list) {
+ list_del_init (&vol_opt->list);
+ GF_FREE (vol_opt);
+ }
GF_FREE (prev);
prev = trav;
}
@@ -549,6 +587,67 @@ loc_wipe (loc_t *loc)
memset (loc, 0, sizeof (*loc));
}
+int
+loc_path (loc_t *loc, const char *bname)
+{
+ int ret = 0;
+
+ if (loc->path)
+ goto out;
+
+ ret = -1;
+
+ if (bname && !strlen (bname))
+ bname = NULL;
+
+ if (!bname)
+ goto inode_path;
+
+ if (loc->parent && !uuid_is_null (loc->parent->gfid)) {
+ ret = inode_path (loc->parent, bname, (char**)&loc->path);
+ } else if (!uuid_is_null (loc->pargfid)) {
+ ret = gf_asprintf ((char**)&loc->path, INODE_PATH_FMT"/%s",
+ uuid_utoa (loc->pargfid), bname);
+ }
+
+ if (loc->path)
+ goto out;
+
+inode_path:
+ if (loc->inode && !uuid_is_null (loc->inode->gfid)) {
+ ret = inode_path (loc->inode, NULL, (char **)&loc->path);
+ } else if (!uuid_is_null (loc->gfid)) {
+ ret = gf_asprintf ((char**)&loc->path, INODE_PATH_FMT,
+ uuid_utoa (loc->gfid));
+ }
+out:
+ return ret;
+}
+
+void
+loc_gfid (loc_t *loc, uuid_t gfid)
+{
+ if (!gfid)
+ goto out;
+ uuid_clear (gfid);
+
+ if (!loc)
+ goto out;
+ else if (!uuid_is_null (loc->gfid))
+ uuid_copy (gfid, loc->gfid);
+ else if (loc->inode && (!uuid_is_null (loc->inode->gfid)))
+ uuid_copy (gfid, loc->inode->gfid);
+out:
+ return;
+}
+
+char*
+loc_gfid_utoa (loc_t *loc)
+{
+ uuid_t gfid;
+ loc_gfid (loc, gfid);
+ return uuid_utoa (gfid);
+}
int
loc_copy (loc_t *dst, loc_t *src)
@@ -560,6 +659,7 @@ loc_copy (loc_t *dst, loc_t *src)
uuid_copy (dst->gfid, src->gfid);
uuid_copy (dst->pargfid, src->pargfid);
+ uuid_copy (dst->gfid, src->gfid);
if (src->inode)
dst->inode = inode_ref (src->inode);
@@ -567,45 +667,38 @@ loc_copy (loc_t *dst, loc_t *src)
if (src->parent)
dst->parent = inode_ref (src->parent);
- dst->path = gf_strdup (src->path);
+ if (src->path) {
+ dst->path = gf_strdup (src->path);
- if (!dst->path)
- goto out;
+ if (!dst->path)
+ goto out;
- dst->name = strrchr (dst->path, '/');
- if (dst->name)
- dst->name++;
+ if (src->name)
+ dst->name = strrchr (dst->path, '/');
+ if (dst->name)
+ dst->name++;
+ }
ret = 0;
out:
- if (ret == -1) {
- if (dst->inode)
- inode_unref (dst->inode);
-
- if (dst->parent)
- inode_unref (dst->parent);
- }
+ if (ret == -1)
+ loc_wipe (dst);
err:
return ret;
}
-
-int
-xlator_list_destroy (xlator_list_t *list)
+gf_boolean_t
+loc_is_root (loc_t *loc)
{
- xlator_list_t *next = NULL;
-
- while (list) {
- next = list->next;
- GF_FREE (list);
- list = next;
+ if (loc && __is_root_gfid (loc->gfid)) {
+ return _gf_true;
+ } else if (loc && loc->inode && __is_root_gfid (loc->inode->gfid)) {
+ return _gf_true;
}
-
- return 0;
+ return _gf_false;
}
-
int
xlator_destroy (xlator_t *xl)
{
@@ -615,10 +708,8 @@ xlator_destroy (xlator_t *xl)
if (!xl)
return 0;
- if (xl->name)
- GF_FREE (xl->name);
- if (xl->type)
- GF_FREE (xl->type);
+ GF_FREE (xl->name);
+ GF_FREE (xl->type);
if (xl->dlhandle)
dlclose (xl->dlhandle);
if (xl->options)
@@ -693,7 +784,7 @@ is_gf_log_command (xlator_t *this, const char *name, char *value)
goto out;
}
- ctx = glusterfs_ctx_get();
+ ctx = this->ctx;
if (!ctx)
goto out;
if (!ctx->active)
generated by cgit (git 2.34.1) at 2025-12-28 17:54:19 +0000