src/common/kernel-ctl/kernel-ioctl.h

   1 /*
   2  * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
   3  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * SPDX-License-Identifier: GPL-2.0-only
   6  *
   7  */
   8
   9 #ifndef _LTT_KERNEL_IOCTL_H
  10 #define _LTT_KERNEL_IOCTL_H
  11
  12 #define LTTNG_MODULES_ABI_MAJOR_VERSION         2
  13 #define LTTNG_MODULES_ABI_MINOR_VERSION         5
  14
  15 /* Get a snapshot of the current ring buffer producer and consumer positions */
  16 #define RING_BUFFER_SNAPSHOT                _IO(0xF6, 0x00)
  17 /* Get the consumer position (iteration start) */
  18 #define RING_BUFFER_SNAPSHOT_GET_CONSUMED   _IOR(0xF6, 0x01, unsigned long)
  19 /* Get the producer position (iteration end) */
  20 #define RING_BUFFER_SNAPSHOT_GET_PRODUCED   _IOR(0xF6, 0x02, unsigned long)
  21 /* Get exclusive read access to the specified sub-buffer position */
  22 #define RING_BUFFER_GET_SUBBUF              _IOW(0xF6, 0x03, unsigned long)
  23 /* Release exclusive sub-buffer access */
  24 #define RING_BUFFER_PUT_SUBBUF              _IO(0xF6, 0x04)
  25
  26 /* Get exclusive read access to the next sub-buffer that can be read. */
  27 #define RING_BUFFER_GET_NEXT_SUBBUF         _IO(0xF6, 0x05)
  28 /* Release exclusive sub-buffer access, move consumer forward. */
  29 #define RING_BUFFER_PUT_NEXT_SUBBUF         _IO(0xF6, 0x06)
  30 /* returns the size of the current sub-buffer, without padding (for mmap). */
  31 #define RING_BUFFER_GET_SUBBUF_SIZE         _IOR(0xF6, 0x07, unsigned long)
  32 /* returns the size of the current sub-buffer, with padding (for splice). */
  33 #define RING_BUFFER_GET_PADDED_SUBBUF_SIZE  _IOR(0xF6, 0x08, unsigned long)
  34 /* returns the maximum size for sub-buffers. */
  35 #define RING_BUFFER_GET_MAX_SUBBUF_SIZE     _IOR(0xF6, 0x09, unsigned long)
  36 /* returns the length to mmap. */
  37 #define RING_BUFFER_GET_MMAP_LEN            _IOR(0xF6, 0x0A, unsigned long)
  38 /* returns the offset of the subbuffer belonging to the mmap reader. */
  39 #define RING_BUFFER_GET_MMAP_READ_OFFSET    _IOR(0xF6, 0x0B, unsigned long)
  40 /* Flush the current sub-buffer, if non-empty. */
  41 #define RING_BUFFER_FLUSH                   _IO(0xF6, 0x0C)
  42 /* Get the current version of the metadata cache (after a get_next). */
  43 #define RING_BUFFER_GET_METADATA_VERSION    _IOR(0xF6, 0x0D, uint64_t)
  44 /*
  45  * Get a snapshot of the current ring buffer producer and consumer positions,
  46  * regardless of whether or not the two positions are contained within the same
  47  * sub-buffer.
  48  */
  49 #define RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS   _IO(0xF6, 0x0E)
  50 /* Flush the current sub-buffer, even if empty. */
  51 #define RING_BUFFER_FLUSH_EMPTY                 _IO(0xF6, 0x0F)
  52 /*
  53  * Reset the position of what has been consumed from the metadata cache to 0
  54  * so it can be read again.
  55  */
  56 #define RING_BUFFER_METADATA_CACHE_DUMP         _IO(0xF6, 0x10)
  57 /* Clear ring buffer content */
  58 #define RING_BUFFER_CLEAR                       _IO(0xF6, 0x11)
  59
  60 /* returns the timestamp begin of the current sub-buffer */
  61 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN     _IOR(0xF6, 0x20, uint64_t)
  62 /* returns the timestamp end of the current sub-buffer */
  63 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_END       _IOR(0xF6, 0x21, uint64_t)
  64 /* returns the number of events discarded */
  65 #define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED    _IOR(0xF6, 0x22, uint64_t)
  66 /* returns the packet payload size */
  67 #define LTTNG_RING_BUFFER_GET_CONTENT_SIZE        _IOR(0xF6, 0x23, uint64_t)
  68 /* returns the actual packet size */
  69 #define LTTNG_RING_BUFFER_GET_PACKET_SIZE         _IOR(0xF6, 0x24, uint64_t)
  70 /* returns the stream id */
  71 #define LTTNG_RING_BUFFER_GET_STREAM_ID           _IOR(0xF6, 0x25, uint64_t)
  72 /* returns the current timestamp */
  73 #define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP   _IOR(0xF6, 0x26, uint64_t)
  74 /* returns the packet sequence number */
  75 #define LTTNG_RING_BUFFER_GET_SEQ_NUM             _IOR(0xF6, 0x27, uint64_t)
  76 /* returns the stream instance id */
  77 #define LTTNG_RING_BUFFER_INSTANCE_ID             _IOR(0xF6, 0x28, uint64_t)
  78
  79 /* Old ABI (without support for 32/64 bits compat) */
  80 /* LTTng file descriptor ioctl */
  81 #define LTTNG_KERNEL_OLD_SESSION                _IO(0xF6, 0x40)
  82 #define LTTNG_KERNEL_OLD_TRACER_VERSION         \
  83                 _IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
  84 #define LTTNG_KERNEL_OLD_TRACEPOINT_LIST        _IO(0xF6, 0x42)
  85 #define LTTNG_KERNEL_OLD_WAIT_QUIESCENT         _IO(0xF6, 0x43)
  86
  87 /* Session FD ioctl */
  88 #define LTTNG_KERNEL_OLD_METADATA               \
  89                 _IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
  90 #define LTTNG_KERNEL_OLD_CHANNEL                \
  91                 _IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
  92 #define LTTNG_KERNEL_OLD_SESSION_START          _IO(0xF6, 0x52)
  93 #define LTTNG_KERNEL_OLD_SESSION_STOP           _IO(0xF6, 0x53)
  94
  95 /* Channel FD ioctl */
  96 #define LTTNG_KERNEL_OLD_STREAM                 _IO(0xF6, 0x60)
  97 #define LTTNG_KERNEL_OLD_EVENT                  \
  98                 _IOW(0xF6, 0x61, struct lttng_kernel_old_event)
  99
 100 /* Event and Channel FD ioctl */
 101 #define LTTNG_KERNEL_OLD_CONTEXT                \
 102                 _IOW(0xF6, 0x70, struct lttng_kernel_old_context)
 103
 104 /* Event, Channel and Session ioctl */
 105 #define LTTNG_KERNEL_OLD_ENABLE                 _IO(0xF6, 0x80)
 106 #define LTTNG_KERNEL_OLD_DISABLE                _IO(0xF6, 0x81)
 107
 108
 109 /* Current ABI (with suport for 32/64 bits compat) */
 110 /* LTTng file descriptor ioctl */
 111 #define LTTNG_KERNEL_SESSION                    _IO(0xF6, 0x45)
 112 #define LTTNG_KERNEL_TRACER_VERSION             \
 113         _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
 114 #define LTTNG_KERNEL_TRACEPOINT_LIST    _IO(0xF6, 0x47)
 115 #define LTTNG_KERNEL_WAIT_QUIESCENT             _IO(0xF6, 0x48)
 116 #define LTTNG_KERNEL_SYSCALL_LIST               _IO(0xF6, 0x4A)
 117 #define LTTNG_KERNEL_TRACER_ABI_VERSION         \
 118         _IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
 119
 120 /* Session FD ioctl */
 121 #define LTTNG_KERNEL_METADATA                   \
 122         _IOW(0xF6, 0x54, struct lttng_kernel_channel)
 123 #define LTTNG_KERNEL_CHANNEL                    \
 124         _IOW(0xF6, 0x55, struct lttng_kernel_channel)
 125 #define LTTNG_KERNEL_SESSION_START              _IO(0xF6, 0x56)
 126 #define LTTNG_KERNEL_SESSION_STOP               _IO(0xF6, 0x57)
 127 #define LTTNG_KERNEL_SESSION_TRACK_PID          \
 128         _IOR(0xF6, 0x58, int32_t)
 129 #define LTTNG_KERNEL_SESSION_UNTRACK_PID        \
 130         _IOR(0xF6, 0x59, int32_t)
 131 /*
 132  * ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
 133  * are generating two different ioctl numbers, but this was not done on
 134  * purpose. We should generally try to avoid those duplications.
 135  */
 136 #define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS  _IO(0xF6, 0x58)
 137 #define LTTNG_KERNEL_SESSION_METADATA_REGEN     _IO(0xF6, 0x59)
 138 /* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
 139 #define LTTNG_KERNEL_SESSION_STATEDUMP          _IO(0xF6, 0x5C)
 140 #define LTTNG_KERNEL_SESSION_SET_NAME           \
 141         _IOR(0xF6, 0x5D, struct lttng_kernel_session_name)
 142 #define LTTNG_KERNEL_SESSION_SET_CREATION_TIME          \
 143         _IOR(0xF6, 0x5E, struct lttng_kernel_session_creation_time)
 144
 145 /* Channel FD ioctl */
 146 #define LTTNG_KERNEL_STREAM                     _IO(0xF6, 0x62)
 147 #define LTTNG_KERNEL_EVENT                      \
 148         _IOW(0xF6, 0x63, struct lttng_kernel_event)
 149 #define LTTNG_KERNEL_SYSCALL_MASK               \
 150         _IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
 151
 152 /* Event and Channel FD ioctl */
 153 #define LTTNG_KERNEL_CONTEXT                    \
 154         _IOW(0xF6, 0x71, struct lttng_kernel_context)
 155
 156 /* Event, Channel and Session ioctl */
 157 #define LTTNG_KERNEL_ENABLE                     _IO(0xF6, 0x82)
 158 #define LTTNG_KERNEL_DISABLE                    _IO(0xF6, 0x83)
 159
 160 /* Event FD ioctl */
 161 #define LTTNG_KERNEL_FILTER                     _IO(0xF6, 0x90)
 162 #define LTTNG_KERNEL_ADD_CALLSITE       _IO(0xF6, 0x91)
 163
 164 /* Session FD ioctl (continued) */
 165 #define LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS   \
 166         _IOR(0xF6, 0xA0, struct lttng_kernel_tracker_args)
 167 #define LTTNG_KERNEL_SESSION_TRACK_ID           \
 168         _IOR(0xF6, 0xA1, struct lttng_kernel_tracker_args)
 169 #define LTTNG_KERNEL_SESSION_UNTRACK_ID         \
 170         _IOR(0xF6, 0xA2, struct lttng_kernel_tracker_args)
 171
 172 #endif /* _LTT_KERNEL_IOCTL_H */