int
main(void)
{
struct epoll_event *const ev = tail_alloc(sizeof(*ev));
ev->events = EPOLLIN;
long rc = invoke_syscall(-1U, EPOLL_CTL_ADD, -2U, ev);
printf("epoll_ctl(-1, EPOLL_CTL_ADD, -2, {EPOLLIN,"
" {u32=%u, u64=%" PRIu64 "}}) = %ld %s (%m)\n",
ev->data.u32, ev->data.u64, rc, errno2name());
rc = invoke_syscall(-3U, EPOLL_CTL_DEL, -4U, ev);
printf("epoll_ctl(-3, EPOLL_CTL_DEL, -4, %p) = %ld %s (%m)\n",
ev, rc, errno2name());
rc = invoke_syscall(-1UL, EPOLL_CTL_MOD, -16UL, 0);
printf("epoll_ctl(-1, EPOLL_CTL_MOD, -16, NULL) = %ld %s (%m)\n",
rc, errno2name());
puts("+++ exited with 0 +++");
return 0;
}
void mbox_send(mbox_t mbox, void *msg, int nbytes)
{
invoke_syscall(SYSCALL_MBOX_SEND, (int)mbox, (int)msg, nbytes);
}
void mbox_close(mbox_t mbox)
{
invoke_syscall(SYSCALL_MBOX_CLOSE, (int)mbox, IGNORE, IGNORE);
}
mbox_t mbox_open(const char *name)
{
return (mbox_t) invoke_syscall(SYSCALL_MBOX_OPEN, (int)name, IGNORE, IGNORE);
}
int wait(pid_t pid)
{
return invoke_syscall(SYSCALL_WAIT, (int)pid, IGNORE, IGNORE);
}
int kill(pid_t pid)
{
return invoke_syscall(SYSCALL_KILL, (int)pid, IGNORE, IGNORE);
}
pid_t spawn(const char *filename)
{
return (pid_t) invoke_syscall(SYSCALL_SPAWN, (int)filename, IGNORE, IGNORE);
}
void yield(void)
{
invoke_syscall(SYSCALL_YIELD, IGNORE, IGNORE, IGNORE);
}
void write_serial(char c)
{
invoke_syscall(SYSCALL_WRITE_SERIAL, (int)c, IGNORE, IGNORE);
}
void shutdown(void)
{
invoke_syscall(SYSCALL_SHUTDOWN, IGNORE, IGNORE, IGNORE);
}
void sleep(int milliseconds)
{
invoke_syscall(SYSCALL_SLEEP, milliseconds, IGNORE, IGNORE);
}
void setpriority(int p)
{
invoke_syscall(SYSCALL_SETPRIORITY, p, IGNORE, IGNORE);
}
int getpriority(void)
{
return invoke_syscall(SYSCALL_GETPRIORITY, IGNORE, IGNORE, IGNORE);
}
int getpid(void)
{
return invoke_syscall(SYSCALL_GETPID, IGNORE, IGNORE, IGNORE);
}
void exit(void)
{
invoke_syscall(SYSCALL_EXIT, IGNORE, IGNORE, IGNORE);
}
/*
* Sample sandboxed code. Calculate an MD5 checksum of the data arriving via
* c3, and place the checksum in c4. a0 will hold input data length. a1
* indicates whether we should try a system call (abort()). c4 must be (at
* least) 33 bytes.
*/
int
invoke(register_t op, size_t len, struct cheri_object system_object,
__capability char *data_input, __capability char *data_output,
struct cheri_object fd_object)
{
int i = 0;
volatile int *ip = &i;
cheri_system_setup(system_object);
switch (op) {
case CHERITEST_HELPER_OP_MD5:
return (invoke_md5(len, data_input, data_output));
case CHERITEST_HELPER_OP_ABORT:
abort();
case CHERITEST_HELPER_OP_SPIN:
while (1);
case CHERITEST_HELPER_OP_CP2_BOUND:
case CHERITEST_HELPER_OP_CP2_PERM:
case CHERITEST_HELPER_OP_CP2_TAG:
case CHERITEST_HELPER_OP_CP2_SEAL:
return (invoke_cap_fault(op));
case CHERITEST_HELPER_OP_VM_RFAULT:
case CHERITEST_HELPER_OP_VM_WFAULT:
case CHERITEST_HELPER_OP_VM_XFAULT:
return (invoke_vm_fault(op));
case CHERITEST_HELPER_OP_SYSCALL:
return (invoke_syscall());
case CHERITEST_HELPER_OP_DIVZERO:
return (1/(*ip));
case CHERITEST_HELPER_OP_SYSCAP:
return (invoke_syscap(system_object));
case CHERITEST_HELPER_OP_CS_HELLOWORLD:
return (cheri_system_helloworld());
case CHERITEST_HELPER_OP_CS_PUTS:
return (cheri_system_puts(
(__capability char *)"sandbox cs_puts\n"));
case CHERITEST_HELPER_OP_CS_PUTCHAR:
return (cheri_system_putchar('C')); /* Is for cookie. */
case CHERITEST_HELPER_OP_PRINTF:
return (printf("%s: printf in sandbox test\n", __func__));
case CHERITEST_HELPER_OP_MALLOC:
return (invoke_malloc());
case CHERITEST_HELPER_OP_FD_FSTAT_C:
return (invoke_fd_fstat_c(fd_object));
case CHERITEST_HELPER_OP_FD_LSEEK_C:
return (invoke_fd_lseek_c(fd_object));
case CHERITEST_HELPER_OP_FD_READ_C:
return (invoke_fd_read_c(fd_object));
case CHERITEST_HELPER_OP_FD_WRITE_C:
return (invoke_fd_write_c(fd_object));
}
return (-1);
}
char get_char(void)
{
return (char) invoke_syscall(SYSCALL_GET_CHAR, IGNORE, IGNORE, IGNORE);
}
void mbox_recv(mbox_t mbox, void *msg, int nbytes)
{
invoke_syscall(SYSCALL_MBOX_RECV, (int) mbox, (int)msg, nbytes);
}