X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-events.h;h=cdb520e8dd91fe07ae3f121a02f5fefe8ba52704;hb=436f640717bab63240d9a624846d947e150a2cee;hp=aca645459820fe1de4eca570795980c205c67036;hpb=2fa2d39a42f3407edcb0664bf4d04af28837ea2c;p=lttng-modules.git

diff --git a/lttng-events.h b/lttng-events.h
index aca64545..cdb520e8 100644
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -1,34 +1,22 @@
-#ifndef _LTTNG_EVENTS_H
-#define _LTTNG_EVENTS_H
-
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
  * lttng-events.h
  *
  * Holds LTTng per-session event registry.
  *
  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@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.
- *
- * 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
  */
 
+#ifndef _LTTNG_EVENTS_H
+#define _LTTNG_EVENTS_H
+
 #include <linux/version.h>
 #include <linux/list.h>
 #include <linux/kprobes.h>
 #include <linux/kref.h>
 #include <lttng-cpuhotplug.h>
-#include <wrapper/uuid.h>
+#include <linux/uuid.h>
+#include <wrapper/uprobes.h>
 #include <lttng-tracer.h>
 #include <lttng-abi.h>
 #include <lttng-abi-old.h>
@@ -219,8 +207,12 @@ struct lttng_ctx_field {
 		struct lttng_perf_counter_field *perf_counter;
 	} u;
 	void (*destroy)(struct lttng_ctx_field *field);
-	/* private data to keep state between get_size and record */
-	void *private;
+	/*
+	 * Private data to keep state between get_size and record.
+	 * User must perform its own synchronization to protect against
+	 * concurrent and reentrant contexts.
+	 */
+	void *priv;
 };
 
 struct lttng_ctx {
@@ -293,6 +285,13 @@ struct lttng_enabler_ref {
 	struct lttng_enabler *ref;		/* backward ref */
 };
 
+struct lttng_uprobe_handler {
+	struct lttng_event *event;
+	loff_t offset;
+	struct uprobe_consumer up_consumer;
+	struct list_head node;
+};
+
 /*
  * lttng_event structure is referred to by the tracing fast path. It must be
  * kept small.
@@ -318,6 +317,10 @@ struct lttng_event {
 		struct {
 			char *symbol_name;
 		} ftrace;
+		struct {
+			struct inode *inode;
+			struct list_head head;
+		} uprobe;
 	} u;
 	struct list_head list;		/* Event list in session */
 	unsigned int metadata_dumped:1;
@@ -518,6 +521,8 @@ struct lttng_session {
 	struct list_head enablers_head;
 	/* Hash table of events */
 	struct lttng_event_ht events_ht;
+	char name[LTTNG_KERNEL_SESSION_NAME_LEN];
+	char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
 };
 
 struct lttng_metadata_cache {
@@ -713,7 +718,98 @@ int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx)
 
 int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type);
 
-#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
+#if defined(CONFIG_CGROUPS) && \
+	((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \
+	 LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_IPC_NS) && \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_NET_NS) && \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_PID_NS) && \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_USER_NS) && \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_UTS_NS) && \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
+
+int lttng_add_uid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_euid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_suid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_gid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_egid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx);
+
+#if defined(CONFIG_PERF_EVENTS)
 int lttng_add_perf_counter_to_ctx(uint32_t type,
 				  uint64_t config,
 				  const char *name,
@@ -780,6 +876,42 @@ void lttng_kprobes_destroy_private(struct lttng_event *event)
 }
 #endif
 
+int lttng_event_add_callsite(struct lttng_event *event,
+	struct lttng_kernel_event_callsite *callsite);
+
+#ifdef CONFIG_UPROBES
+int lttng_uprobes_register(const char *name,
+	int fd, struct lttng_event *event);
+int lttng_uprobes_add_callsite(struct lttng_event *event,
+	struct lttng_kernel_event_callsite *callsite);
+void lttng_uprobes_unregister(struct lttng_event *event);
+void lttng_uprobes_destroy_private(struct lttng_event *event);
+#else
+static inline
+int lttng_uprobes_register(const char *name,
+	int fd, struct lttng_event *event)
+{
+	return -ENOSYS;
+}
+
+static inline
+int lttng_uprobes_add_callsite(struct lttng_event *event,
+	struct lttng_kernel_event_callsite *callsite)
+{
+	return -ENOSYS;
+}
+
+static inline
+void lttng_uprobes_unregister(struct lttng_event *event)
+{
+}
+
+static inline
+void lttng_uprobes_destroy_private(struct lttng_event *event)
+{
+}
+#endif
+
 #ifdef CONFIG_KRETPROBES
 int lttng_kretprobes_register(const char *name,
 		const char *symbol_name,
@@ -852,8 +984,6 @@ int lttng_calibrate(struct lttng_kernel_calibrate *calibrate);
 extern const struct file_operations lttng_tracepoint_list_fops;
 extern const struct file_operations lttng_syscall_list_fops;
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
 #define TRACEPOINT_HAS_DATA_ARG
-#endif
 
 #endif /* _LTTNG_EVENTS_H */