include/instrumentation/syscalls/headers/x86-64-syscalls_pointers_override.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) */
   2
   3 #ifndef CREATE_SYSCALL_TABLE
   4
   5 #define OVERRIDE_64_connect
   6 SC_LTTNG_TRACEPOINT_EVENT_CODE(connect,
   7         TP_PROTO(sc_exit(long ret,) int fd, struct sockaddr __user * uservaddr, int addrlen),
   8         TP_ARGS(sc_exit(ret,) fd, uservaddr, addrlen),
   9         TP_locvar(
  10                 __typeof__(uservaddr->sa_family) sa_family;
  11                 uint16_t dport;
  12                 uint32_t v4addr;
  13                 uint16_t v6addr[8];
  14                 unsigned int v4addr_len, v6addr_len;
  15         ),
  16         TP_code_pre(
  17                 sc_in(
  18                         memset(tp_locvar, 0, sizeof(*tp_locvar));
  19                         if (addrlen < sizeof(tp_locvar->sa_family))
  20                                 goto skip_code;
  21                         (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->sa_family,
  22                                         &uservaddr->sa_family, sizeof(tp_locvar->sa_family));
  23                         switch (tp_locvar->sa_family) {
  24                         case AF_INET:
  25                                 if (addrlen < sizeof(struct sockaddr_in))
  26                                         goto skip_code;
  27                                 (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->dport,
  28                                                 &((struct sockaddr_in __user *) uservaddr)->sin_port,
  29                                                 sizeof(tp_locvar->dport));
  30                                 (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->v4addr,
  31                                                 &((struct sockaddr_in __user *) uservaddr)->sin_addr.s_addr,
  32                                                 sizeof(tp_locvar->v4addr));
  33                                 tp_locvar->v4addr_len = 4;
  34                                 break;
  35                         case AF_INET6:
  36                                 if (addrlen < sizeof(struct sockaddr_in6))
  37                                         goto skip_code;
  38                                 (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->dport,
  39                                                 &((struct sockaddr_in6 __user *) uservaddr)->sin6_port,
  40                                                 sizeof(tp_locvar->dport));
  41                                 if (lib_ring_buffer_copy_from_user_check_nofault(tp_locvar->v6addr,
  42                                                 &((struct sockaddr_in6 __user *) uservaddr)->sin6_addr.in6_u.u6_addr8,
  43                                                 sizeof(tp_locvar->v6addr)))
  44                                         memset(tp_locvar->v6addr, 0, sizeof(tp_locvar->v6addr));
  45                                 tp_locvar->v6addr_len = 8;
  46                                 break;
  47                         }
  48                 skip_code:
  49                 )
  50         ),
  51         TP_FIELDS(
  52                 sc_exit(ctf_integer(long, ret, ret))
  53                 sc_in(ctf_integer(int, fd, fd))
  54                 sc_in(ctf_integer_hex(struct sockaddr *, uservaddr, uservaddr))
  55                 sc_in(ctf_integer_hex(int, addrlen, addrlen))
  56                 sc_in(ctf_integer(unsigned short, family, tp_locvar->sa_family))
  57                 sc_in(ctf_integer_network(uint16_t, dport, tp_locvar->dport))
  58                 sc_in(ctf_sequence_network(uint8_t, v4addr, &tp_locvar->v4addr, unsigned int, tp_locvar->v4addr_len))
  59                 sc_in(ctf_sequence_network(uint16_t, v6addr, &tp_locvar->v6addr, unsigned int, tp_locvar->v6addr_len))
  60         ),
  61         TP_code_post()
  62 )
  63
  64 #define LTTNG_SYSCALL_ACCEPT_locvar                     \
  65         __typeof__(upeer_sockaddr->sa_family) sa_family;\
  66         uint16_t sport;                                 \
  67         uint32_t v4addr;                                \
  68         uint16_t v6addr[8];                             \
  69         int v4addr_len, v6addr_len;                     \
  70         int uaddr_len;
  71
  72 #define LTTNG_SYSCALL_ACCEPT_code_pre                                                                                   \
  73         sc_inout(                                                                                                       \
  74                 memset(tp_locvar, 0, sizeof(*tp_locvar));                                                               \
  75                 (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->uaddr_len,                              \
  76                                 upeer_addrlen, sizeof(tp_locvar->uaddr_len));                                           \
  77         )                                                                                                               \
  78         sc_out(                                                                                                         \
  79                 if (tp_locvar->uaddr_len < sizeof(tp_locvar->sa_family))                                                \
  80                         goto skip_code;                                                                                 \
  81                 (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->sa_family,                              \
  82                                 &upeer_sockaddr->sa_family, sizeof(tp_locvar->sa_family));                              \
  83                 switch (tp_locvar->sa_family) {                                                                         \
  84                 case AF_INET:                                                                                           \
  85                         if (tp_locvar->uaddr_len < sizeof(struct sockaddr_in))                                          \
  86                                 goto skip_code;                                                                         \
  87                         (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->sport,                          \
  88                                         &((struct sockaddr_in __user *) upeer_sockaddr)->sin_port,                      \
  89                                         sizeof(tp_locvar->sport));                                                      \
  90                         (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->v4addr,                         \
  91                                         &((struct sockaddr_in __user *) upeer_sockaddr)->sin_addr.s_addr,               \
  92                                         sizeof(tp_locvar->v4addr));                                                     \
  93                         tp_locvar->v4addr_len = 4;                                                                      \
  94                         break;                                                                                          \
  95                 case AF_INET6:                                                                                          \
  96                         if (tp_locvar->uaddr_len < sizeof(struct sockaddr_in6))                                         \
  97                                 goto skip_code;                                                                         \
  98                         (void) lib_ring_buffer_copy_from_user_check_nofault(&tp_locvar->sport,                          \
  99                                         &((struct sockaddr_in6 __user *) upeer_sockaddr)->sin6_port,                    \
 100                                         sizeof(tp_locvar->sport));                                                      \
 101                         if (lib_ring_buffer_copy_from_user_check_nofault(tp_locvar->v6addr,                             \
 102                                         &((struct sockaddr_in6 __user *) upeer_sockaddr)->sin6_addr.in6_u.u6_addr8,     \
 103                                         sizeof(tp_locvar->v6addr)))                                                     \
 104                                 memset(tp_locvar->v6addr, 0, sizeof(tp_locvar->v6addr));                                \
 105                         tp_locvar->v6addr_len = 8;                                                                      \
 106                         break;                                                                                          \
 107                 }                                                                                                       \
 108         skip_code:                                                                                                      \
 109         )
 110
 111 #define OVERRIDE_64_accept
 112 SC_LTTNG_TRACEPOINT_EVENT_CODE(accept,
 113         TP_PROTO(sc_exit(long ret,) int fd, struct sockaddr __user * upeer_sockaddr, int __user * upeer_addrlen),
 114         TP_ARGS(sc_exit(ret,) fd, upeer_sockaddr, upeer_addrlen),
 115         TP_locvar(
 116                 LTTNG_SYSCALL_ACCEPT_locvar
 117         ),
 118         TP_code_pre(
 119                 LTTNG_SYSCALL_ACCEPT_code_pre
 120         ),
 121         TP_FIELDS(
 122                 sc_exit(ctf_integer(long, ret, ret))
 123                 sc_in(ctf_integer(int, fd, fd))
 124                 sc_in(ctf_integer_hex(struct sockaddr *, upeer_sockaddr, upeer_sockaddr))
 125                 sc_inout(ctf_integer(int, upeer_addrlen, tp_locvar->uaddr_len))
 126                 sc_out(ctf_integer(unsigned short, family, tp_locvar->sa_family))
 127                 sc_out(ctf_integer_network(uint16_t, sport, tp_locvar->sport))
 128                 sc_out(ctf_sequence_network(uint8_t, v4addr, &tp_locvar->v4addr, unsigned int, tp_locvar->v4addr_len))
 129                 sc_out(ctf_sequence_network(uint16_t, v6addr, &tp_locvar->v6addr, unsigned int, tp_locvar->v6addr_len))
 130         ),
 131         TP_code_post()
 132 )
 133
 134 #define OVERRIDE_64_accept4
 135 SC_LTTNG_TRACEPOINT_EVENT_CODE(accept4,
 136         TP_PROTO(sc_exit(long ret,) int fd, struct sockaddr __user * upeer_sockaddr, int __user * upeer_addrlen, int flags),
 137         TP_ARGS(sc_exit(ret,) fd, upeer_sockaddr, upeer_addrlen, flags),
 138         TP_locvar(
 139                 LTTNG_SYSCALL_ACCEPT_locvar
 140         ),
 141         TP_code_pre(
 142                 LTTNG_SYSCALL_ACCEPT_code_pre
 143         ),
 144         TP_FIELDS(
 145                 sc_exit(ctf_integer(long, ret, ret))
 146                 sc_in(ctf_integer(int, fd, fd))
 147                 sc_in(ctf_integer_hex(struct sockaddr *, upeer_sockaddr, upeer_sockaddr))
 148                 sc_inout(ctf_integer(int, upeer_addrlen, tp_locvar->uaddr_len))
 149                 sc_in(ctf_integer_hex(int, flags, flags))
 150                 sc_out(ctf_integer(unsigned short, family, tp_locvar->sa_family))
 151                 sc_out(ctf_integer_network(uint16_t, sport, tp_locvar->sport))
 152                 sc_out(ctf_sequence_network(uint8_t, v4addr, &tp_locvar->v4addr, unsigned int, tp_locvar->v4addr_len))
 153                 sc_out(ctf_sequence_network(uint16_t, v6addr, &tp_locvar->v6addr, unsigned int, tp_locvar->v6addr_len))
 154         ),
 155         TP_code_post()
 156 )
 157
 158 #define OVERRIDE_64_pipe
 159 SC_LTTNG_TRACEPOINT_EVENT(pipe,
 160         TP_PROTO(sc_exit(long ret,) int * fildes),
 161         TP_ARGS(sc_exit(ret,) fildes),
 162         TP_FIELDS(sc_exit(ctf_integer(long, ret, ret))
 163                 sc_out(ctf_user_array(int, fildes, fildes, 2))
 164         )
 165 )
 166
 167 #else   /* CREATE_SYSCALL_TABLE */
 168
 169 #define OVERRIDE_TABLE_64_clone
 170 TRACE_SYSCALL_TABLE(clone, clone, 56, 5)
 171 #define OVERRIDE_TABLE_64_execve
 172 TRACE_SYSCALL_TABLE(execve, execve, 59, 3)
 173 #define OVERRIDE_TABLE_64_getcpu
 174 TRACE_SYSCALL_TABLE(getcpu, getcpu, 309, 3)
 175
 176 #endif /* CREATE_SYSCALL_TABLE */