/* might be called at any time, provided it's init'd */
static void bootloader_stop(libxl__egc *egc,
libxl__bootloader_state *bl, int rc)
{
STATE_AO_GC(bl->ao);
int r;
libxl__datacopier_kill(&bl->keystrokes);
libxl__datacopier_kill(&bl->display);
if (libxl__ev_child_inuse(&bl->child)) {
r = kill(bl->child.pid, SIGTERM);
if (r) LOGE(WARN, "%sfailed to kill bootloader [%lu]",
rc ? "after failure, " : "", (unsigned long)bl->child.pid);
}
if (!bl->rc)
bl->rc = rc;
}
int libxl__datacopier_start(libxl__datacopier_state *dc)
{
int rc;
STATE_AO_GC(dc->ao);
libxl__datacopier_init(dc);
assert(dc->readfd >= 0 || dc->writefd >= 0);
assert(!(dc->readbuf && dc->bytes_to_read == -1));
dc->abrt.ao = ao;
dc->abrt.callback = datacopier_abort;
rc = libxl__ao_abortable_register(&dc->abrt);
if (rc) goto out;
if (dc->readfd >= 0) {
rc = libxl__ev_fd_register(gc, &dc->toread, datacopier_readable,
dc->readfd, POLLIN);
if (rc) goto out;
}
if (dc->writefd >= 0) {
rc = libxl__ev_fd_register(gc, &dc->towrite, datacopier_writable,
dc->writefd, POLLOUT);
if (rc) goto out;
}
return 0;
out:
libxl__datacopier_kill(dc);
return rc;
}
static void bootloader_cleanup(libxl__egc *egc, libxl__bootloader_state *bl)
{
STATE_AO_GC(bl->ao);
int i;
if (bl->outputpath) libxl__remove_file(gc, bl->outputpath);
if (bl->outputdir) libxl__remove_directory(gc, bl->outputdir);
libxl__domaindeathcheck_stop(gc,&bl->deathcheck);
libxl__datacopier_kill(&bl->keystrokes);
libxl__datacopier_kill(&bl->display);
for (i=0; i<2; i++) {
libxl__carefd_close(bl->ptys[i].master);
libxl__carefd_close(bl->ptys[i].slave);
}
if (bl->display.log) {
fclose(bl->display.log);
bl->display.log = NULL;
}
}
static void bootloader_finished(libxl__egc *egc, libxl__ev_child *child,
pid_t pid, int status)
{
libxl__bootloader_state *bl = CONTAINER_OF(child, *bl, child);
STATE_AO_GC(bl->ao);
int rc;
libxl__datacopier_kill(&bl->keystrokes);
libxl__datacopier_kill(&bl->display);
if (status) {
if (bl->got_pollhup && WIFSIGNALED(status) && WTERMSIG(status)==SIGTERM)
LOG(ERROR, "got POLLHUP, sent SIGTERM");
LOG(ERROR, "bootloader failed - consult logfile %s", bl->logfile);
libxl_report_child_exitstatus(CTX, XTL_ERROR, "bootloader",
pid, status);
rc = ERROR_FAIL;
goto out;
} else {
LOG(DEBUG, "bootloader completed");
}
if (bl->rc) {
/* datacopier went wrong */
rc = bl->rc;
goto out;
}
rc = parse_bootloader_result(egc, bl);
if (rc) goto out;
rc = 0;
LOG(DEBUG, "bootloader execution successful");
out:
bootloader_callback(egc, bl, rc);
}
static int datacopier_pollhup_handled(libxl__egc *egc,
libxl__datacopier_state *dc,
int fd, short revents, int onwrite)
{
STATE_AO_GC(dc->ao);
if (dc->callback_pollhup && (revents & POLLHUP)) {
LOG(DEBUG, "received POLLHUP on fd %d: %s during copy of %s",
fd, onwrite ? dc->writewhat : dc->readwhat, dc->copywhat);
libxl__datacopier_kill(dc);
dc->callback_pollhup(egc, dc, ERROR_FAIL, onwrite, -1);
return 1;
}
return 0;
}
int libxl__datacopier_start(libxl__datacopier_state *dc)
{
int rc;
STATE_AO_GC(dc->ao);
libxl__datacopier_init(dc);
rc = libxl__ev_fd_register(gc, &dc->toread, datacopier_readable,
dc->readfd, POLLIN);
if (rc) goto out;
rc = libxl__ev_fd_register(gc, &dc->towrite, datacopier_writable,
dc->writefd, POLLOUT);
if (rc) goto out;
return 0;
out:
libxl__datacopier_kill(dc);
return rc;
}
static void datacopier_callback(libxl__egc *egc, libxl__datacopier_state *dc,
int rc, int onwrite, int errnoval)
{
libxl__datacopier_kill(dc);
dc->callback(egc, dc, rc, onwrite, errnoval);
}
