static void
display_closed (GdkDisplay *display,
gboolean is_error)
{
int i;
for (i = 0; i < num_screens; i++)
{
if (gail_screens [i].update_handler)
{
g_source_remove (gail_screens [i].update_handler);
gail_screens [i].update_handler = 0;
}
if (gail_screens [i].update_desktop_handler)
{
g_source_remove (gail_screens [i].update_desktop_handler);
gail_screens [i].update_desktop_handler = 0;
}
free_screen_info (&gail_screens [i]);
}
g_free (gail_screens);
gail_screens = NULL;
num_screens = 0;
}
/*
* EFI entry point for the arm/arm64 EFI stubs. This is the entrypoint
* that is described in the PE/COFF header. Most of the code is the same
* for both archictectures, with the arch-specific code provided in the
* handle_kernel_image() function.
*/
unsigned long efi_entry(void *handle, efi_system_table_t *sys_table,
unsigned long *image_addr)
{
efi_loaded_image_t *image;
efi_status_t status;
unsigned long image_size = 0;
unsigned long dram_base;
/* addr/point and size pairs for memory management*/
unsigned long initrd_addr;
u64 initrd_size = 0;
unsigned long fdt_addr = 0; /* Original DTB */
unsigned long fdt_size = 0;
char *cmdline_ptr = NULL;
int cmdline_size = 0;
unsigned long new_fdt_addr;
efi_guid_t loaded_image_proto = LOADED_IMAGE_PROTOCOL_GUID;
unsigned long reserve_addr = 0;
unsigned long reserve_size = 0;
int secure_boot = 0;
struct screen_info *si;
/* Check if we were booted by the EFI firmware */
if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
goto fail;
pr_efi(sys_table, "Booting Linux Kernel...\n");
status = check_platform_features(sys_table);
if (status != EFI_SUCCESS)
goto fail;
/*
* Get a handle to the loaded image protocol. This is used to get
* information about the running image, such as size and the command
* line.
*/
status = sys_table->boottime->handle_protocol(handle,
&loaded_image_proto, (void *)&image);
if (status != EFI_SUCCESS) {
pr_efi_err(sys_table, "Failed to get loaded image protocol\n");
goto fail;
}
dram_base = get_dram_base(sys_table);
if (dram_base == EFI_ERROR) {
pr_efi_err(sys_table, "Failed to find DRAM base\n");
goto fail;
}
/*
* Get the command line from EFI, using the LOADED_IMAGE
* protocol. We are going to copy the command line into the
* device tree, so this can be allocated anywhere.
*/
cmdline_ptr = efi_convert_cmdline(sys_table, image, &cmdline_size);
if (!cmdline_ptr) {
pr_efi_err(sys_table, "getting command line via LOADED_IMAGE_PROTOCOL\n");
goto fail;
}
/* check whether 'nokaslr' was passed on the command line */
if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) {
static const u8 default_cmdline[] = CONFIG_CMDLINE;
const u8 *str, *cmdline = cmdline_ptr;
if (IS_ENABLED(CONFIG_CMDLINE_FORCE))
cmdline = default_cmdline;
str = strstr(cmdline, "nokaslr");
if (str == cmdline || (str > cmdline && *(str - 1) == ' '))
__nokaslr = true;
}
si = setup_graphics(sys_table);
status = handle_kernel_image(sys_table, image_addr, &image_size,
&reserve_addr,
&reserve_size,
dram_base, image);
if (status != EFI_SUCCESS) {
pr_efi_err(sys_table, "Failed to relocate kernel\n");
goto fail_free_cmdline;
}
status = efi_parse_options(cmdline_ptr);
if (status != EFI_SUCCESS)
pr_efi_err(sys_table, "Failed to parse EFI cmdline options\n");
secure_boot = efi_get_secureboot(sys_table);
if (secure_boot > 0)
pr_efi(sys_table, "UEFI Secure Boot is enabled.\n");
if (secure_boot < 0) {
pr_efi_err(sys_table,
"could not determine UEFI Secure Boot status.\n");
}
/*
* Unauthenticated device tree data is a security hazard, so
* ignore 'dtb=' unless UEFI Secure Boot is disabled.
*/
if (secure_boot != 0 && strstr(cmdline_ptr, "dtb=")) {
pr_efi(sys_table, "Ignoring DTB from command line.\n");
} else {
status = handle_cmdline_files(sys_table, image, cmdline_ptr,
"dtb=",
~0UL, &fdt_addr, &fdt_size);
if (status != EFI_SUCCESS) {
pr_efi_err(sys_table, "Failed to load device tree!\n");
goto fail_free_image;
}
}
if (fdt_addr) {
pr_efi(sys_table, "Using DTB from command line\n");
} else {
/* Look for a device tree configuration table entry. */
fdt_addr = (uintptr_t)get_fdt(sys_table, &fdt_size);
if (fdt_addr)
pr_efi(sys_table, "Using DTB from configuration table\n");
}
if (!fdt_addr)
pr_efi(sys_table, "Generating empty DTB\n");
status = handle_cmdline_files(sys_table, image, cmdline_ptr,
"initrd=", dram_base + SZ_512M,
(unsigned long *)&initrd_addr,
(unsigned long *)&initrd_size);
if (status != EFI_SUCCESS)
pr_efi_err(sys_table, "Failed initrd from command line!\n");
efi_random_get_seed(sys_table);
new_fdt_addr = fdt_addr;
status = allocate_new_fdt_and_exit_boot(sys_table, handle,
&new_fdt_addr, dram_base + MAX_FDT_OFFSET,
initrd_addr, initrd_size, cmdline_ptr,
fdt_addr, fdt_size);
/*
* If all went well, we need to return the FDT address to the
* calling function so it can be passed to kernel as part of
* the kernel boot protocol.
*/
if (status == EFI_SUCCESS)
return new_fdt_addr;
pr_efi_err(sys_table, "Failed to update FDT and exit boot services\n");
efi_free(sys_table, initrd_size, initrd_addr);
efi_free(sys_table, fdt_size, fdt_addr);
fail_free_image:
efi_free(sys_table, image_size, *image_addr);
efi_free(sys_table, reserve_size, reserve_addr);
fail_free_cmdline:
free_screen_info(sys_table, si);
efi_free(sys_table, cmdline_size, (unsigned long)cmdline_ptr);
fail:
return EFI_ERROR;
}
static gboolean
get_stacked_windows (GailScreenInfo *info)
{
Atom ret_type;
int format;
gulong nitems;
gulong bytes_after;
guchar *data;
int error;
int result;
int i;
int j;
int *desktops;
gboolean *desktops_changed;
if (_net_client_list_stacking == None)
_net_client_list_stacking =
XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_NET_CLIENT_LIST_STACKING", False);
gdk_error_trap_push ();
ret_type = None;
result = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
GDK_WINDOW_XWINDOW (info->root_window),
_net_client_list_stacking,
0, G_MAXLONG,
False, XA_WINDOW, &ret_type, &format, &nitems,
&bytes_after, &data);
error = gdk_error_trap_pop ();
/* nitems < 1 will occur if the property is not set */
if (error != Success || result != Success || nitems < 1)
{
free_screen_info (info);
return FALSE;
}
if (ret_type != XA_WINDOW)
{
XFree (data);
free_screen_info (info);
return FALSE;
}
desktops = g_malloc0 (nitems * sizeof (int));
desktops_changed = g_malloc0 (nitems * sizeof (gboolean));
for (i = 0; i < nitems; i++)
{
gboolean window_found = FALSE;
for (j = 0; j < info->stacked_windows_len; j++)
{
if (info->stacked_windows [j] == data [i])
{
desktops [i] = info->desktop [j];
desktops_changed [i] = info->desktop_changed [j];
window_found = TRUE;
break;
}
}
if (!window_found)
{
desktops [i] = get_window_desktop (data [i]);
desktops_changed [i] = FALSE;
}
}
free_screen_info (info);
info->stacked_windows = (Window*) data;
info->stacked_windows_len = nitems;
info->desktop = desktops;
info->desktop_changed = desktops_changed;
return TRUE;
}
