include/instrumentation/syscalls/headers/syscalls_integers_override.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) */
   2
   3 #ifndef CREATE_SYSCALL_TABLE
   4
   5 /*
   6  * The `flags` argument of the mmap syscall is split in two parts:
   7  * - The type of mapping is described by the four least significant bits of the 4
   8  *   bytes integer,
   9  * - The options on the mapping are described by the remaining 28 most
  10  *   significant bits.
  11  */
  12 #define MAPPING_TYPE_RESERVED_BITS 4
  13 #define LTTNG_MMAP_FLAGS_TO_CTF(x) ((x) >> MAPPING_TYPE_RESERVED_BITS)
  14
  15 /*
  16  * Enumeration of the mmap flags, as described in the 'mmap'
  17  * system call man page.
  18  */
  19 SC_LTTNG_TRACEPOINT_ENUM(lttng_mmap_protection,
  20         TP_ENUM_VALUES(
  21                 ctf_enum_value("PROT_EXEC",     PROT_EXEC)
  22                 ctf_enum_value("PROT_READ",     PROT_READ)
  23                 ctf_enum_value("PROT_WRITE",    PROT_WRITE)
  24                 ctf_enum_value("PROT_NONE",     PROT_NONE)
  25         )
  26 )
  27
  28 SC_LTTNG_TRACEPOINT_ENUM(lttng_mmap_flags_mapping_type,
  29         TP_ENUM_VALUES(
  30                 ctf_enum_value("MAP_SHARED",            MAP_SHARED)
  31                 ctf_enum_value("MAP_PRIVATE",           MAP_PRIVATE)
  32 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
  33                 ctf_enum_value("MAP_SHARED_VALIDATE",   MAP_SHARED_VALIDATE)
  34 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)) */
  35         )
  36 )
  37
  38 /*
  39  * Shift the values of the options so we can read them from the `flags` integer
  40  * directly.
  41  */
  42 SC_LTTNG_TRACEPOINT_ENUM(lttng_mmap_flags_options,
  43         TP_ENUM_VALUES(
  44                 ctf_enum_value("<none>",                0)
  45                 ctf_enum_value("MAP_32BIT",             LTTNG_MMAP_FLAGS_TO_CTF(MAP_32BIT))
  46                 ctf_enum_value("MAP_ANONYMOUS",         LTTNG_MMAP_FLAGS_TO_CTF(MAP_ANONYMOUS))
  47                 ctf_enum_value("MAP_DENYWRITE",         LTTNG_MMAP_FLAGS_TO_CTF(MAP_DENYWRITE))
  48                 ctf_enum_value("MAP_EXECUTABLE",        LTTNG_MMAP_FLAGS_TO_CTF(MAP_EXECUTABLE))
  49                 ctf_enum_value("MAP_FIXED",             LTTNG_MMAP_FLAGS_TO_CTF(MAP_FIXED))
  50 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0))
  51                 ctf_enum_value("MAP_FIXED_NOREPLACE",   LTTNG_MMAP_FLAGS_TO_CTF(MAP_FIXED_NOREPLACE))
  52 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0)) */
  53                 ctf_enum_value("MAP_GROWSDOWN",         LTTNG_MMAP_FLAGS_TO_CTF(MAP_GROWSDOWN))
  54                 ctf_enum_value("MAP_HUGETLB",           LTTNG_MMAP_FLAGS_TO_CTF(MAP_HUGETLB))
  55 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
  56                 ctf_enum_value("MAP_HUGETLB_2MB",       LTTNG_MMAP_FLAGS_TO_CTF(MAP_HUGE_2MB))
  57                 ctf_enum_value("MAP_HUGETLB_1GB",       LTTNG_MMAP_FLAGS_TO_CTF(MAP_HUGE_1GB))
  58 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) */
  59                 ctf_enum_value("MAP_LOCKED",            LTTNG_MMAP_FLAGS_TO_CTF(MAP_LOCKED))
  60                 ctf_enum_value("MAP_NONBLOCK",          LTTNG_MMAP_FLAGS_TO_CTF(MAP_NONBLOCK))
  61                 ctf_enum_value("MAP_NORESERVE",         LTTNG_MMAP_FLAGS_TO_CTF(MAP_NORESERVE))
  62                 ctf_enum_value("MAP_POPULATE",          LTTNG_MMAP_FLAGS_TO_CTF(MAP_POPULATE))
  63                 ctf_enum_value("MAP_STACK",             LTTNG_MMAP_FLAGS_TO_CTF(MAP_STACK))
  64 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
  65                 ctf_enum_value("MAP_SYNC",              LTTNG_MMAP_FLAGS_TO_CTF(MAP_SYNC))
  66 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)) */
  67                 ctf_enum_value("MAP_UNINITIALIZED",     LTTNG_MMAP_FLAGS_TO_CTF(MAP_UNINITIALIZED))
  68         )
  69 )
  70
  71 #define LTTNG_MMAP_FLAGS_TYPE                                           \
  72 {                                                                       \
  73         .name = "type",                                                 \
  74         .type = {                                                       \
  75                 .atype = atype_enum_nestable,                           \
  76                 .u = {                                                  \
  77                         .enum_nestable = {                              \
  78                                 .desc = &__enum_lttng_mmap_flags_mapping_type,          \
  79                                 .container_type =  __LTTNG_COMPOUND_LITERAL(            \
  80                                         struct lttng_type, __type_integer(uint32_t,     \
  81                                                 4, 1, -1, __BYTE_ORDER, 16, none)),     \
  82                         },                                              \
  83                 },                                                      \
  84         },                                                              \
  85 }
  86
  87 #define LTTNG_MMAP_FLAGS_OPTIONS                                        \
  88 {                                                                       \
  89         .name = "options",                                              \
  90         .type = {                                                       \
  91                 .atype = atype_enum_nestable,                           \
  92                 .u = {                                                  \
  93                         .enum_nestable = {                              \
  94                                 .desc = &__enum_lttng_mmap_flags_options,           \
  95                                 .container_type = __LTTNG_COMPOUND_LITERAL(         \
  96                                         struct lttng_type, __type_integer(uint32_t, \
  97                                                 28, 1, -1, __BYTE_ORDER, 16, none)),\
  98                         },                                              \
  99                 },                                                      \
 100         },                                                              \
 101 }
 102
 103 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
 104 #define LTTNG_MMAP_FLAGS                        \
 105         [0] = LTTNG_MMAP_FLAGS_TYPE,            \
 106         [1] = LTTNG_MMAP_FLAGS_OPTIONS,
 107
 108 #else
 109 #define LTTNG_MMAP_FLAGS                        \
 110         [0] = LTTNG_MMAP_FLAGS_OPTIONS,         \
 111         [1] = LTTNG_MMAP_FLAGS_TYPE,
 112 #endif
 113
 114 /*
 115  * Use a custom field here so that tracer writes a single integer and the
 116  * work of splitting it up in two fields is left to the trace reader.
 117  */
 118 #define OVERRIDE_32_mmap
 119 #define OVERRIDE_64_mmap
 120 SC_LTTNG_TRACEPOINT_EVENT(mmap,
 121         TP_PROTO(sc_exit(unsigned long ret,)
 122                 unsigned long addr, unsigned long len,
 123                 unsigned long prot, unsigned long flags,
 124                 unsigned long fd, unsigned long off),
 125         TP_ARGS(sc_exit(ret,) addr, len, prot, flags, fd, off),
 126         TP_FIELDS(sc_exit(ctf_integer_hex(unsigned long, ret, ret))
 127                 sc_in(ctf_integer_hex(unsigned long, addr, addr))
 128                 sc_in(ctf_integer(size_t, len, len))
 129                 sc_in(ctf_enum(lttng_mmap_protection, int, prot, prot))
 130                 sc_in(
 131                         ctf_custom_field(
 132                                 ctf_custom_type(
 133                                         {
 134                                                 .atype = atype_struct_nestable,
 135                                                 .u.struct_nestable.nr_fields = 2,
 136                                                 .u.struct_nestable.fields =
 137                                                         __LTTNG_COMPOUND_LITERAL(struct lttng_event_field,
 138                                                                 LTTNG_MMAP_FLAGS
 139                                                         ),
 140                                                 .u.struct_nestable.alignment = lttng_alignof(uint32_t) * CHAR_BIT,
 141                                         }
 142                                 ),
 143                                 flags,
 144                                 ctf_custom_code(
 145                                         ctf_integer_type(uint32_t, flags)
 146                                 )
 147                         )
 148                 )
 149                 sc_in(ctf_integer(int, fd, fd))
 150                 sc_in(ctf_integer(off_t, offset, off))
 151         )
 152 )
 153
 154 /*
 155  * Enumeration of the open flags, as described in the 'open'
 156  * system call man page.
 157  */
 158 SC_LTTNG_TRACEPOINT_ENUM(lttng_fcntl_cmd_flags,
 159         TP_ENUM_VALUES(
 160                 ctf_enum_value("F_DUPFD", F_DUPFD)
 161                 ctf_enum_value("F_GETFD", F_GETFD)
 162                 ctf_enum_value("F_SETFD", F_SETFD)
 163                 ctf_enum_value("F_GETFL", F_GETFL)
 164                 ctf_enum_value("F_SETFL", F_SETFL)
 165                 ctf_enum_value("F_GETLK", F_GETLK)
 166                 ctf_enum_value("F_SETLK", F_SETLK)
 167                 ctf_enum_value("F_SETLKW", F_SETLKW)
 168                 ctf_enum_value("F_SETOWN", F_SETOWN)
 169                 ctf_enum_value("F_GETOWN", F_GETOWN)
 170                 ctf_enum_value("F_SETSIG", F_SETSIG)
 171                 ctf_enum_value("F_GETSIG", F_GETSIG)
 172 #if !defined(CONFIG_64BIT) || defined(CONFIG_COMPAT)
 173                 ctf_enum_value("F_GETLK64", F_GETLK64)
 174                 ctf_enum_value("F_SETLK64", F_SETLK64)
 175                 ctf_enum_value("F_SETLKW64", F_SETLKW64)
 176 #endif  /* #if !defined(CONFIG_64BIT) || defined(CONFIG_COMPAT) */
 177                 ctf_enum_value("F_SETOWN_EX", F_SETOWN_EX)
 178                 ctf_enum_value("F_GETOWN_EX", F_GETOWN_EX)
 179 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 180                 ctf_enum_value("F_GETOWNER_UIDS", F_GETOWNER_UIDS)
 181 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */
 182 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0))
 183                 ctf_enum_value("F_OFD_GETLK", F_OFD_GETLK)
 184                 ctf_enum_value("F_OFD_SETLK", F_OFD_SETLK)
 185                 ctf_enum_value("F_OFD_SETLKW", F_OFD_SETLKW)
 186 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
 187                 ctf_enum_value("F_SETLEASE", F_SETLEASE)
 188                 ctf_enum_value("F_GETLEASE", F_GETLEASE)
 189                 ctf_enum_value("F_NOTIFY", F_NOTIFY)
 190                 ctf_enum_value("F_CANCELLK", F_CANCELLK)
 191                 ctf_enum_value("F_DUPFD_CLOEXEC", F_DUPFD_CLOEXEC)
 192                 ctf_enum_value("F_SETPIPE_SZ", F_SETPIPE_SZ)
 193                 ctf_enum_value("F_GETPIPE_SZ", F_GETPIPE_SZ)
 194 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0))
 195                 ctf_enum_value("F_ADD_SEALS", F_ADD_SEALS)
 196                 ctf_enum_value("F_GET_SEALS", F_GET_SEALS)
 197 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0)) */
 198 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
 199                 ctf_enum_value("F_GET_RW_HINT", F_GET_RW_HINT)
 200                 ctf_enum_value("F_SET_RW_HINT", F_SET_RW_HINT)
 201                 ctf_enum_value("F_GET_FILE_RW_HINT", F_GET_FILE_RW_HINT)
 202                 ctf_enum_value("F_SET_FILE_RW_HINT", F_SET_FILE_RW_HINT)
 203 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) */
 204         )
 205 )
 206
 207 #define OVERRIDE_32_fcntl
 208 #define OVERRIDE_64_fcntl
 209 SC_LTTNG_TRACEPOINT_EVENT(fcntl,
 210         TP_PROTO(sc_exit(long ret,) unsigned int fd, unsigned int cmd, unsigned long arg),
 211         TP_ARGS(sc_exit(ret,) fd, cmd, arg),
 212         TP_FIELDS(
 213                 sc_exit(ctf_integer(long, ret, ret))
 214                 sc_in(ctf_integer(unsigned int, fd, fd))
 215                 sc_in(ctf_enum(lttng_fcntl_cmd_flags, unsigned int, cmd, cmd))
 216                 sc_inout(ctf_integer(unsigned long, arg, arg)))
 217 )
 218
 219 #endif /* CREATE_SYSCALL_TABLE */