static void
event_post_syscall(void *drcontext, int sysnum)
{
drsys_syscall_t *syscall;
drsys_sysnum_t sysnum_full;
bool success = false;
const char *name;
if (drsys_cur_syscall(drcontext, &syscall) != DRMF_SUCCESS)
ASSERT(false, "drsys_cur_syscall failed");
if (drsys_syscall_number(syscall, &sysnum_full) != DRMF_SUCCESS)
ASSERT(false, "drsys_get_sysnum failed");
ASSERT(sysnum == sysnum_full.number, "primary should match DR's num");
if (drsys_syscall_name(syscall, &name) != DRMF_SUCCESS)
ASSERT(false, "drsys_syscall_name failed");
check_mcontext(drcontext);
if (drsys_iterate_args(drcontext, drsys_iter_arg_cb, NULL) != DRMF_SUCCESS)
ASSERT(false, "drsys_iterate_args failed");
if (drsys_cur_syscall_result(drcontext, &success, NULL, NULL) !=
DRMF_SUCCESS || !success) {
/* With the new early injector on Linux, we see access, open, + stat64 fail */
#ifdef WINDOWS
ASSERT(false, "no syscalls in this app should fail");
#endif
} else {
if (drsys_iterate_memargs(drcontext, drsys_iter_memarg_cb, NULL) != DRMF_SUCCESS)
ASSERT(false, "drsys_iterate_memargs failed");
}
}
static void
event_post_syscall(void *drcontext, int sysnum)
{
drsys_syscall_t *syscall;
bool success = false;
uint errno;
drmf_status_t res;
buf_info_t buf;
buf.sofar = 0;
if (drsys_cur_syscall(drcontext, &syscall) != DRMF_SUCCESS)
ASSERT(false, "drsys_cur_syscall failed");
if (drsys_cur_syscall_result(drcontext, &success, NULL, &errno) != DRMF_SUCCESS)
ASSERT(false, "drsys_cur_syscall_result failed");
if (success)
OUTPUT(&buf, " succeeded =>\n");
else
OUTPUT(&buf, " failed (error="IF_WINDOWS_ELSE(PIFX, "%d")") =>\n", errno);
res = drsys_iterate_args(drcontext, drsys_iter_arg_cb, &buf);
if (res != DRMF_SUCCESS && res != DRMF_ERROR_DETAILS_UNKNOWN)
ASSERT(false, "drsys_iterate_args failed post-syscall");
FLUSH_BUFFER(outf, buf.buf, buf.sofar);
}
bool
wingdi_shared_process_syscall(bool pre, void *drcontext, drsys_sysnum_t sysnum,
cls_syscall_t *pt, dr_mcontext_t *mc,
drsys_syscall_t *syscall)
{
/* handlers here do not check for success so we check up front */
if (!pre) {
bool success;
if (drsys_cur_syscall_result(drcontext, &success, NULL, NULL)
!= DRMF_SUCCESS || !success)
return true;
}
if (sysnum.number == sysnum_GdiCreateDIBSection.number)
return handle_GdiCreateDIBSection(pre, drcontext, pt);
if (options.check_gdi) {
syscall_check_gdi(pre, drcontext, sysnum, pt, mc);
}
return true; /* execute syscall */
}