syscalls/socketcall.c

   1 /*
   2  * SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
   3  */
   4 #include <stdlib.h>
   5 #include <linux/net.h>
   6 #include <sys/types.h>          /* See NOTES */
   7 #include <sys/socket.h>
   8 #include "compat.h"
   9 #include "net.h"
  10 #include "sanitise.h"
  11 #include "shm.h"
  12 #include "utils.h"
  13
  14 static void socketcall_socket(unsigned long *args)
  15 {
  16         struct socket_triplet st;
  17
  18         gen_socket_args(&st);
  19
  20         args[0] = st.family;
  21         args[1] = st.type;
  22         args[2] = st.protocol;
  23 }
  24
  25 struct socketcall_ptr {
  26         unsigned int call;
  27         void (*func)(unsigned long *args);
  28 };
  29
  30 static const struct socketcall_ptr socketcallptrs[] = {
  31         { .call = SYS_SOCKET, .func = socketcall_socket },
  32 //      { .call = SYS_BIND, .func = socketcall_bind },
  33 //      { .call = SYS_CONNECT, .func = socketcall_connect },
  34 //      { .call = SYS_LISTEN, .func = socketcall_listen },
  35 //      { .call = SYS_ACCEPT, .func = socketcall_accept },
  36 //      { .call = SYS_GETSOCKNAME, .func = socketcall_getsockname },
  37 //      { .call = SYS_GETPEERNAME, .func = socketcall_getpeername },
  38 //      { .call = SYS_SOCKETPAIR, .func = socketcall_socketpair },
  39 //      { .call = SYS_SEND, .func = socketcall_send },
  40 //      { .call = SYS_RECV, .func = socketcall_recv },
  41 //      { .call = SYS_SENDTO, .func = socketcall_sendto },
  42 //      { .call = SYS_RECVFROM, .func = socketcall_recvfrom },
  43 //      { .call = SYS_SHUTDOWN, .func = socketcall_shutdown },
  44 //      { .call = SYS_SETSOCKOPT, .func = socketcall_setsockopt },
  45 //      { .call = SYS_GETSOCKOPT, .func = socketcall_getsockopt },
  46 //      { .call = SYS_SENDMSG, .func = socketcall_sendmsg },
  47 //      { .call = SYS_RECVMSG, .func = socketcall_recvmsg },
  48 //      { .call = SYS_ACCEPT4, .func = socketcall_accept },
  49 //      { .call = SYS_RECVMMSG, .func = socketcall_recvmmsg },
  50 //      { .call = SYS_SENDMMSG, .func = socketcall_sendmmsg },
  51 };
  52
  53
  54 static void sanitise_socketcall(int childno)
  55 {
  56         unsigned long *args;
  57         unsigned int i;
  58
  59         args = malloc(6 * sizeof(unsigned long));
  60
  61         shm->syscall[childno].a1 = rand() % 20;
  62         shm->syscall[childno].a1 = SYS_SOCKET;
  63
  64         for (i = 0; i < ARRAY_SIZE(socketcallptrs); i++) {
  65                 if (socketcallptrs[i].call == shm->syscall[childno].a1)
  66                         socketcallptrs[i].func(args);
  67         }
  68
  69         shm->syscall[childno].a2 = (unsigned long) args;
  70 }
  71
  72 struct syscallentry syscall_socketcall = {
  73         .name = "socketcall",
  74         .num_args = 2,
  75         .arg1name = "call",
  76         .arg2name = "args",
  77         .arg2type = ARG_ADDRESS,
  78         .sanitise = sanitise_socketcall,
  79 };