SoW-2019-0002: Dynamic Snapshot

[deliverable/lttng-modules.git] / lttng-abi.h

diff --git a/lttng-abi.h b/lttng-abi.h
index 91fe67f7ea333e55f33a9848e66feaa21dee9fc1..9cd0293dd3ab076621f0e089f49245e3035261b5 100644 (file)
--- a/lttng-abi.h
+++ b/lttng-abi.h
@@ -17,7 +17,7 @@
  * should be increased when an incompatible ABI change is done.
  */
 #define LTTNG_MODULES_ABI_MAJOR_VERSION                2
-#define LTTNG_MODULES_ABI_MINOR_VERSION                4
+#define LTTNG_MODULES_ABI_MINOR_VERSION                5
 
 #define LTTNG_KERNEL_SYM_NAME_LEN      256
 #define LTTNG_KERNEL_SESSION_NAME_LEN  256
@@ -110,6 +110,24 @@ struct lttng_kernel_event {
        } u;
 } __attribute__((packed));
 
+#define LTTNG_KERNEL_TRIGGER_PADDING1  16
+#define LTTNG_KERNEL_TRIGGER_PADDING2  LTTNG_KERNEL_SYM_NAME_LEN + 32
+struct lttng_kernel_trigger {
+       uint64_t id;
+       char name[LTTNG_KERNEL_SYM_NAME_LEN];   /* event name */
+       enum lttng_kernel_instrumentation instrumentation;
+       char padding[LTTNG_KERNEL_TRIGGER_PADDING1];
+
+       /* Per instrumentation type configuration */
+       union {
+               struct lttng_kernel_kretprobe kretprobe;
+               struct lttng_kernel_kprobe kprobe;
+               struct lttng_kernel_function_tracer ftrace;
+               struct lttng_kernel_uprobe uprobe;
+               char padding[LTTNG_KERNEL_TRIGGER_PADDING2];
+       } u;
+} __attribute__((packed));
+
 struct lttng_kernel_tracer_version {
        uint32_t major;
        uint32_t minor;
@@ -168,6 +186,18 @@ enum lttng_kernel_context_type {
        LTTNG_KERNEL_CONTEXT_PID_NS             = 22,
        LTTNG_KERNEL_CONTEXT_USER_NS            = 23,
        LTTNG_KERNEL_CONTEXT_UTS_NS             = 24,
+       LTTNG_KERNEL_CONTEXT_UID                = 25,
+       LTTNG_KERNEL_CONTEXT_EUID               = 26,
+       LTTNG_KERNEL_CONTEXT_SUID               = 27,
+       LTTNG_KERNEL_CONTEXT_GID                = 28,
+       LTTNG_KERNEL_CONTEXT_EGID               = 29,
+       LTTNG_KERNEL_CONTEXT_SGID               = 30,
+       LTTNG_KERNEL_CONTEXT_VUID               = 31,
+       LTTNG_KERNEL_CONTEXT_VEUID              = 32,
+       LTTNG_KERNEL_CONTEXT_VSUID              = 33,
+       LTTNG_KERNEL_CONTEXT_VGID               = 34,
+       LTTNG_KERNEL_CONTEXT_VEGID              = 35,
+       LTTNG_KERNEL_CONTEXT_VSGID              = 36,
 };
 
 struct lttng_kernel_perf_counter_ctx {
@@ -196,7 +226,24 @@ struct lttng_kernel_filter_bytecode {
        char data[0];
 } __attribute__((packed));
 
+enum lttng_kernel_tracker_type {
+       LTTNG_KERNEL_TRACKER_UNKNOWN            = -1,
+
+       LTTNG_KERNEL_TRACKER_PID                = 0,
+       LTTNG_KERNEL_TRACKER_VPID               = 1,
+       LTTNG_KERNEL_TRACKER_UID                = 2,
+       LTTNG_KERNEL_TRACKER_VUID               = 3,
+       LTTNG_KERNEL_TRACKER_GID                = 4,
+       LTTNG_KERNEL_TRACKER_VGID               = 5,
+};
+
+struct lttng_kernel_tracker_args {
+       enum lttng_kernel_tracker_type type;
+       int32_t id;
+};
+
 /* LTTng file descriptor ioctl */
+/* lttng-abi-old.h reserve 0x40, 0x41, 0x42, 0x43, and 0x44. */
 #define LTTNG_KERNEL_SESSION                   _IO(0xF6, 0x45)
 #define LTTNG_KERNEL_TRACER_VERSION            \
        _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
@@ -207,8 +254,16 @@ struct lttng_kernel_filter_bytecode {
 #define LTTNG_KERNEL_SYSCALL_LIST              _IO(0xF6, 0x4A)
 #define LTTNG_KERNEL_TRACER_ABI_VERSION                \
        _IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
+#define LTTNG_KERNEL_TRIGGER_GROUP_CREATE      _IO(0xF6, 0x4C)
+
+/* Trigger group file descriptor ioctl */
+#define LTTNG_KERNEL_TRIGGER_GROUP_NOTIFICATION_FD \
+       _IO(0xF6, 0x30)
+#define LTTNG_KERNEL_TRIGGER_CREATE            \
+       _IOW(0xF6, 0x31, struct lttng_kernel_trigger)
 
 /* Session FD ioctl */
+/* lttng-abi-old.h reserve 0x50, 0x51, 0x52, and 0x53. */
 #define LTTNG_KERNEL_METADATA                  \
        _IOW(0xF6, 0x54, struct lttng_kernel_channel)
 #define LTTNG_KERNEL_CHANNEL                   \
@@ -219,6 +274,7 @@ struct lttng_kernel_filter_bytecode {
        _IOR(0xF6, 0x58, int32_t)
 #define LTTNG_KERNEL_SESSION_UNTRACK_PID       \
        _IOR(0xF6, 0x59, int32_t)
+
 /*
  * ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
  * are generating two different ioctl numbers, but this was not done on
@@ -227,7 +283,7 @@ struct lttng_kernel_filter_bytecode {
 #define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
 #define LTTNG_KERNEL_SESSION_METADATA_REGEN    _IO(0xF6, 0x59)
 
-/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
+/* lttng-abi-old.h reserve 0x5A and 0x5B. */
 #define LTTNG_KERNEL_SESSION_STATEDUMP         _IO(0xF6, 0x5C)
 #define LTTNG_KERNEL_SESSION_SET_NAME          \
        _IOR(0xF6, 0x5D, struct lttng_kernel_session_name)
@@ -235,6 +291,7 @@ struct lttng_kernel_filter_bytecode {
        _IOR(0xF6, 0x5E, struct lttng_kernel_session_creation_time)
 
 /* Channel FD ioctl */
+/* lttng-abi-old.h reserve 0x60 and 0x61. */
 #define LTTNG_KERNEL_STREAM                    _IO(0xF6, 0x62)
 #define LTTNG_KERNEL_EVENT                     \
        _IOW(0xF6, 0x63, struct lttng_kernel_event)
@@ -242,10 +299,12 @@ struct lttng_kernel_filter_bytecode {
        _IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
 
 /* Event and Channel FD ioctl */
+/* lttng-abi-old.h reserve 0x70. */
 #define LTTNG_KERNEL_CONTEXT                   \
        _IOW(0xF6, 0x71, struct lttng_kernel_context)
 
 /* Event, Channel and Session ioctl */
+/* lttng-abi-old.h reserve 0x80 and 0x81. */
 #define LTTNG_KERNEL_ENABLE                    _IO(0xF6, 0x82)
 #define LTTNG_KERNEL_DISABLE                   _IO(0xF6, 0x83)
 
@@ -253,6 +312,14 @@ struct lttng_kernel_filter_bytecode {
 #define LTTNG_KERNEL_FILTER                    _IO(0xF6, 0x90)
 #define LTTNG_KERNEL_ADD_CALLSITE              _IO(0xF6, 0x91)
 
+/* Session FD ioctl (continued) */
+#define LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS  \
+       _IOR(0xF6, 0xA0, struct lttng_kernel_tracker_args)
+#define LTTNG_KERNEL_SESSION_TRACK_ID          \
+       _IOR(0xF6, 0xA1, struct lttng_kernel_tracker_args)
+#define LTTNG_KERNEL_SESSION_UNTRACK_ID                \
+       _IOR(0xF6, 0xA2, struct lttng_kernel_tracker_args)
+
 /*
  * LTTng-specific ioctls for the lib ringbuffer.
  *