lttng-abi: Document ioctl numbers reserved by lttng-abi-old.h

[lttng-modules.git] / lttng-events.h

diff --git a/lttng-events.h b/lttng-events.h
index 8b0803e40b4c22ebd6129c790596393af4629808..cdb520e8dd91fe07ae3f121a02f5fefe8ba52704 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -15,7 +15,8 @@
 #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>
@@ -284,6 +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.
@@ -309,6 +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;
@@ -509,6 +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 {
@@ -704,7 +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,
@@ -771,6 +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,
@@ -843,8 +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 */