X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-context-vegid.c;h=97618ce0b6e20c01fd71993d6ddeadc3a030654d;hb=4e48b5d;hp=12d095f710a45c8b1a5cbeaceef3f712c6f13333;hpb=b4051ad8c170901d5297e1b3005b24e63cb0ab1e;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-context-vegid.c b/liblttng-ust/lttng-context-vegid.c
index 12d095f7..97618ce0 100644
--- a/liblttng-ust/lttng-context-vegid.c
+++ b/liblttng-ust/lttng-context-vegid.c
@@ -1,34 +1,23 @@
 /*
- * lttng-context-vegid.c
- *
- * LTTng UST namespaced effective group ID context.
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
  * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *               2019 Michael Jeanson <mjeanson@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library 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
- * Lesser General Public License for more details.
+ * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
  *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * LTTng UST namespaced effective group ID context.
  */
 
 #define _LGPL_SOURCE
+#include <limits.h>
 #include <stddef.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <lttng/ust-events.h>
 #include <lttng/ust-tracer.h>
-#include <lttng/ringbuffer-config.h>
+#include <lttng/ringbuffer-context.h>
+
+#include "context-internal.h"
 #include "creds.h"
 
 
@@ -73,56 +62,59 @@ void lttng_context_vegid_reset(void)
 }
 
 static
-size_t vegid_get_size(struct lttng_ctx_field *field, size_t offset)
+size_t vegid_get_size(void *priv __attribute__((unused)),
+		size_t offset)
 {
 	size_t size = 0;
 
-	size += lib_ring_buffer_align(offset, lttng_alignof(gid_t));
+	size += lttng_ust_lib_ring_buffer_align(offset, lttng_ust_rb_alignof(gid_t));
 	size += sizeof(gid_t);
 	return size;
 }
 
 static
-void vegid_record(struct lttng_ctx_field *field,
+void vegid_record(void *priv __attribute__((unused)),
 		 struct lttng_ust_lib_ring_buffer_ctx *ctx,
-		 struct lttng_channel *chan)
+		 struct lttng_ust_channel_buffer *chan)
 {
 	gid_t vegid;
 
 	vegid = get_vegid();
-	lib_ring_buffer_align_ctx(ctx, lttng_alignof(vegid));
-	chan->ops->event_write(ctx, &vegid, sizeof(vegid));
+	chan->ops->event_write(ctx, &vegid, sizeof(vegid), lttng_ust_rb_alignof(vegid));
 }
 
 static
-void vegid_get_value(struct lttng_ctx_field *field,
-		struct lttng_ctx_value *value)
+void vegid_get_value(void *priv __attribute__((unused)),
+		struct lttng_ust_ctx_value *value)
 {
 	value->u.s64 = get_vegid();
 }
 
-int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx)
+static const struct lttng_ust_ctx_field *ctx_field = lttng_ust_static_ctx_field(
+	lttng_ust_static_event_field("vegid",
+		lttng_ust_static_type_integer(sizeof(gid_t) * CHAR_BIT,
+				lttng_ust_rb_alignof(gid_t) * CHAR_BIT,
+				lttng_ust_is_signed_type(gid_t),
+				BYTE_ORDER, 10),
+		false, false),
+	vegid_get_size,
+	vegid_record,
+	vegid_get_value,
+	NULL, NULL);
+
+int lttng_add_vegid_to_ctx(struct lttng_ust_ctx **ctx)
 {
-	struct lttng_ctx_field *field;
-
-	field = lttng_append_context(ctx);
-	if (!field)
-		return -ENOMEM;
-	if (lttng_find_context(*ctx, "vegid")) {
-		lttng_remove_context_field(ctx, field);
-		return -EEXIST;
+	int ret;
+
+	if (lttng_find_context(*ctx, ctx_field->event_field->name)) {
+		ret = -EEXIST;
+		goto error_find_context;
 	}
-	field->event_field.name = "vegid";
-	field->event_field.type.atype = atype_integer;
-	field->event_field.type.u.basic.integer.size = sizeof(gid_t) * CHAR_BIT;
-	field->event_field.type.u.basic.integer.alignment = lttng_alignof(gid_t) * CHAR_BIT;
-	field->event_field.type.u.basic.integer.signedness = lttng_is_signed_type(gid_t);
-	field->event_field.type.u.basic.integer.reverse_byte_order = 0;
-	field->event_field.type.u.basic.integer.base = 10;
-	field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
-	field->get_size = vegid_get_size;
-	field->record = vegid_record;
-	field->get_value = vegid_get_value;
-	lttng_context_update(*ctx);
+	ret = lttng_ust_context_append(ctx, ctx_field);
+	if (ret)
+		return ret;
 	return 0;
+
+error_find_context:
+	return ret;
 }