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-rw-r--r--xlators/cluster/dht/src/dht-common.c315
1 files changed, 223 insertions, 92 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 802bd5a49ee..3285f46f27a 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -1761,115 +1761,219 @@ dht_fill_pathinfo_xattr (xlator_t *this, dht_local_t *local,
}
int
-dht_vgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int op_ret, int op_errno, dict_t *xattr, dict_t *xdata)
+dht_vgetxattr_alloc_and_fill (dht_local_t *local, dict_t *xattr, xlator_t *this,
+ int op_errno)
{
- dht_local_t *local = NULL;
- int ret = 0;
- int flag = 0;
- int this_call_cnt = 0;
- char *value_got = NULL;
- char layout_buf[8192] = {0,};
- char *xattr_buf = NULL;
- dict_t *dict = NULL;
- int32_t alloc_len = 0;
- int32_t plen = 0;
- call_frame_t *prev = NULL;
+ int ret = -1;
+ char *value = NULL;
+ int32_t plen = 0;
- local = frame->local;
- prev = cookie;
+ ret = dict_get_str (xattr, local->xsel, &value);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Subvolume %s returned -1 (%s)", this->name,
+ strerror (op_errno));
+ local->op_ret = -1;
+ local->op_errno = op_errno;
+ goto out;
+ }
- if (op_ret >= 0) {
- ret = dict_get_str (xattr, local->xsel, &value_got);
- if (!ret) {
- alloc_len = strlen (value_got);
+ local->alloc_len += strlen(value);
- /**
- * allocate the buffer:- we allocate 10 bytes extra in
- * case we need to append ' Link: ' in the buffer for
- * another STACK_WIND
- */
+ if (!local->xattr_val) {
+ local->alloc_len += (strlen (DHT_PATHINFO_HEADER) + 10);
+ local->xattr_val = GF_CALLOC (local->alloc_len, sizeof (char),
+ gf_common_mt_char);
+ if (!local->xattr_val) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+ if (local->xattr_val) {
+ plen = strlen (local->xattr_val);
+ if (plen) {
+ /* extra byte(s) for \0 to be safe */
+ local->alloc_len += (plen + 2);
+ local->xattr_val = GF_REALLOC (local->xattr_val,
+ local->alloc_len);
if (!local->xattr_val) {
- alloc_len += (strlen (DHT_PATHINFO_HEADER) + 10);
- local->xattr_val =
- GF_CALLOC (alloc_len,
- sizeof (char),
- gf_common_mt_char);
+ ret = -1;
+ goto out;
}
+ }
- if (local->xattr_val) {
- plen = strlen (local->xattr_val);
- if (plen) {
- void *p;
- /* extra byte(s) for \0 to be safe */
- alloc_len += (plen + 2);
- p = GF_REALLOC (local->xattr_val,
- alloc_len);
- if (!p)
- goto out;
- local->xattr_val = p;
- }
+ (void) strcat (local->xattr_val, value);
+ local->op_ret = 0;
+ }
- strcat (local->xattr_val, value_got);
- }
- local->op_ret = 0;
- }
+ ret = 0;
+
+ out:
+ return ret;
+}
+
+int
+dht_vgetxattr_fill_and_set (dht_local_t *local, dict_t **dict, xlator_t *this,
+ gf_boolean_t flag)
+{
+ int ret = -1;
+ char *xattr_buf = NULL;
+ char layout_buf[8192] = {0,};
+
+ if (flag)
+ fill_layout_info (local->layout, layout_buf);
+
+ *dict = dict_new ();
+ if (!*dict)
+ goto out;
+
+ /* we would need max this many bytes to create xattr string
+ * extra 40 bytes is just an estimated amount of additional
+ * space required as we include translator name and some
+ * spaces, brackets etc. when forming the pathinfo string.
+ *
+ * For node-uuid we just don't have all the pretty formatting,
+ * but since this is a generic routine for pathinfo & node-uuid
+ * we dont have conditional space allocation and try to be
+ * generic
+ */
+ local->alloc_len += (2 * strlen (this->name))
+ + strlen (layout_buf)
+ + 40;
+ xattr_buf = GF_CALLOC (local->alloc_len, sizeof (char),
+ gf_common_mt_char);
+ if (!xattr_buf)
+ goto out;
+
+ if (XATTR_IS_PATHINFO (local->xsel)) {
+ (void) dht_fill_pathinfo_xattr (this, local, xattr_buf,
+ local->alloc_len, flag,
+ layout_buf);
+ } else if (XATTR_IS_NODE_UUID (local->xsel)) {
+ (void) snprintf (xattr_buf, local->alloc_len, "%s",
+ local->xattr_val);
} else {
- local->op_ret = -1;
- local->op_errno = op_errno;
- gf_log (this->name, GF_LOG_ERROR, "Subvolume %s returned -1 "
- "(%s)", prev->this->name, strerror (op_errno));
+ gf_log (this->name, GF_LOG_WARNING,
+ "Unknown local->xsel (%s)", local->xsel);
+ goto out;
}
+ ret = dict_set_dynstr (*dict, local->xsel, xattr_buf);
+ GF_FREE (local->xattr_val);
+
out:
- this_call_cnt = dht_frame_return (frame);
- if (is_last_call (this_call_cnt)) {
+ return ret;
+}
- if (local->op_ret == -1) {
- goto unwind;
- }
+int
+dht_vgetxattr_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, dict_t *xattr, dict_t *xdata)
+{
+ int ret = 0;
+ dht_local_t *local = NULL;
+ int this_call_cnt = 0;
+ dict_t *dict = NULL;
- if (local->layout->cnt > 1) {
- /* Set it for directory */
- fill_layout_info (local->layout, layout_buf);
- flag = 1;
- }
+ VALIDATE_OR_GOTO (frame, out);
+ VALIDATE_OR_GOTO (frame->local, out);
- dict = dict_new ();
-
- /* we would need max this many bytes to create xattr string */
- alloc_len += (2 * strlen (this->name))
- + strlen (layout_buf)
- + 40;
- xattr_buf = GF_CALLOC (alloc_len,
- sizeof (char), gf_common_mt_char);
-
- if (XATTR_IS_PATHINFO (local->xsel)) {
- (void) dht_fill_pathinfo_xattr (this, local, xattr_buf,
- alloc_len, flag,
- layout_buf);
- } else if (XATTR_IS_NODE_UUID (local->xsel)) {
- (void) snprintf (xattr_buf, alloc_len, "%s",
- local->xattr_val);
- } else
- gf_log (this->name, GF_LOG_WARNING,
- "Unknown local->xsel (%s)", local->xsel);
+ local = frame->local;
- ret = dict_set_dynstr (dict, local->xsel, xattr_buf);
+ LOCK (&frame->lock);
+ {
+ this_call_cnt = --local->call_cnt;
+ if (op_ret < 0) {
+ if (op_errno != ENOTCONN) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "getxattr err (%s) for dir",
+ strerror (op_errno));
+ local->op_ret = -1;
+ local->op_errno = op_errno;
+ }
- GF_FREE (local->xattr_val);
+ goto unlock;
+ }
+
+ ret = dht_vgetxattr_alloc_and_fill (local, xattr, this,
+ op_errno);
+ if (ret)
+ gf_log (this->name, GF_LOG_ERROR,
+ "alloc or fill failure");
+ }
+ unlock:
+ UNLOCK (&frame->lock);
- DHT_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict,
- xdata);
+ if (!is_last_call (this_call_cnt))
+ goto out;
- if (dict)
- dict_unref (dict);
+ /* -- last call: do patch ups -- */
- return 0;
+ if (local->op_ret == -1) {
+ goto unwind;
}
-unwind:
+ ret = dht_vgetxattr_fill_and_set (local, &dict, this, _gf_true);
+ if (ret)
+ goto unwind;
+
+ DHT_STACK_UNWIND (getxattr, frame, 0, 0, dict, xdata);
+ goto cleanup;
+
+ unwind:
DHT_STACK_UNWIND (getxattr, frame, -1, local->op_errno, NULL, NULL);
+ cleanup:
+ if (dict)
+ dict_unref (dict);
+ out:
+ return 0;
+}
+
+int
+dht_vgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, dict_t *xattr, dict_t *xdata)
+{
+ dht_local_t *local = NULL;
+ int ret = 0;
+ dict_t *dict = NULL;
+ call_frame_t *prev = NULL;
+ gf_boolean_t flag = _gf_true;
+
+ local = frame->local;
+ prev = cookie;
+
+ if (op_ret < 0) {
+ local->op_ret = -1;
+ local->op_errno = op_errno;
+ gf_log (this->name, GF_LOG_ERROR, "Subvolume %s returned -1 "
+ "(%s)", prev->this->name, strerror (op_errno));
+ goto unwind;
+ }
+
+ ret = dht_vgetxattr_alloc_and_fill (local, xattr, this,
+ op_errno);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "alloc or fill failure");
+ goto unwind;
+ }
+
+ flag = (local->layout->cnt > 1) ? _gf_true : _gf_false;
+
+ ret = dht_vgetxattr_fill_and_set (local, &dict, this, flag);
+ if (ret)
+ goto unwind;
+
+ DHT_STACK_UNWIND (getxattr, frame, 0, 0, dict, xdata);
+ goto cleanup;
+
+ unwind:
+ DHT_STACK_UNWIND (getxattr, frame, -1, local->op_errno,
+ NULL, NULL);
+ cleanup:
+ if (dict)
+ dict_unref (dict);
+
return 0;
}
@@ -1949,7 +2053,9 @@ dht_getxattr_unwind (call_frame_t *frame,
int
dht_getxattr (call_frame_t *frame, xlator_t *this,
loc_t *loc, const char *key, dict_t *xdata)
+#define DHT_IS_DIR(layout) (layout->cnt > 1)
{
+
xlator_t *subvol = NULL;
xlator_t *hashed_subvol = NULL;
xlator_t *cached_subvol = NULL;
@@ -1993,8 +2099,31 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
}
}
- if (key && ((strcmp (key, GF_XATTR_PATHINFO_KEY) == 0)
- || strcmp (key, GF_XATTR_NODE_UUID_KEY) == 0)) {
+ /* for file use cached subvolume (obviously!): see if {}
+ * below
+ * for directory:
+ * wind to all subvolumes and exclude subvolumes which
+ * return ENOTCONN (in callback)
+ *
+ * NOTE: Don't trust inode here, as that may not be valid
+ * (until inode_link() happens)
+ */
+ if (key && (strcmp (key, GF_XATTR_PATHINFO_KEY) == 0)
+ && DHT_IS_DIR(layout)) {
+ (void) strncpy (local->xsel, key, 256);
+ cnt = local->call_cnt = layout->cnt;
+ for (i = 0; i < cnt; i++) {
+ subvol = layout->list[i].xlator;
+ STACK_WIND (frame, dht_vgetxattr_dir_cbk,
+ subvol, subvol->fops->getxattr,
+ loc, key, NULL);
+ }
+ return 0;
+ }
+
+ /* node-uuid or pathinfo for files */
+ if (key && ((strcmp (key, GF_XATTR_NODE_UUID_KEY) == 0)
+ || (strcmp (key, GF_XATTR_PATHINFO_KEY) == 0))) {
cached_subvol = local->cached_subvol;
(void) strncpy (local->xsel, key, 256);
@@ -2004,6 +2133,7 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
return 0;
}
+
if (key && (strcmp (key, GF_XATTR_LINKINFO_KEY) == 0)) {
hashed_subvol = dht_subvol_get_hashed (this, loc);
if (!hashed_subvol) {
@@ -2037,12 +2167,12 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
if (key && (!strcmp (GF_XATTR_MARKER_KEY, key))
&& (-1 == frame->root->pid)) {
-
- if (loc->inode-> ia_type == IA_IFDIR) {
+ if (DHT_IS_DIR(layout)) {
cnt = layout->cnt;
} else {
cnt = 1;
}
+
sub_volumes = alloca ( cnt * sizeof (xlator_t *));
for (i = 0; i < cnt; i++)
*(sub_volumes + i) = layout->list[i].xlator;
@@ -2061,7 +2191,7 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
if (key && *conf->vol_uuid) {
if ((match_uuid_local (key, conf->vol_uuid) == 0) &&
(-1 == frame->root->pid)) {
- if (loc->inode-> ia_type == IA_IFDIR) {
+ if (DHT_IS_DIR(layout)) {
cnt = layout->cnt;
} else {
cnt = 1;
@@ -2083,7 +2213,7 @@ dht_getxattr (call_frame_t *frame, xlator_t *this,
}
}
- if (loc->inode-> ia_type == IA_IFDIR) {
+ if (DHT_IS_DIR(layout)) {
cnt = local->call_cnt = layout->cnt;
} else {
cnt = local->call_cnt = 1;
@@ -2103,6 +2233,7 @@ err:
return 0;
}
+#undef DHT_IS_DIR
int
dht_fgetxattr (call_frame_t *frame, xlator_t *this,
generated by cgit (git 2.34.1) at 2024-11-12 23:38:58 +0000