This commit adds the menu-driven UEFI Boot Variable maintenance.
User can add and delete the Boot#### variable, and update the
BootOrder variable through menu operation.
Signed-off-by: Masahisa Kojima <masahisa.koj...@linaro.org>
---
lib/efi_loader/efi_bootmgr.c | 720 +++++++++++++++++++++++++++++++++++
1 file changed, 720 insertions(+)
diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c
index 013d868f23..739140f742 100644
--- a/lib/efi_loader/efi_bootmgr.c
+++ b/lib/efi_loader/efi_bootmgr.c
@@ -32,6 +32,8 @@ static const struct efi_runtime_services *rs;
*/
#define EFI_BOOTMGR_MENU_ENTRY_NUM_MAX 1024
+#define EFI_BOOTMGR_FILE_PATH_MAX 512
+#define EFI_BOOTMGR_BOOT_NAME_MAX 64
typedef efi_status_t (*efi_bootmenu_entry_func)(void *data, bool *exit);
@@ -95,12 +97,49 @@ struct efi_bootmgr_boot_selection_data {
static efi_status_t efi_bootmgr_process_boot_selected(void *data, bool *exit);
static efi_status_t efi_bootmgr_process_boot_selection(void *data, bool *exit);
+static efi_status_t efi_bootmgr_process_maintenance(void *data, bool *exit);
+static efi_status_t efi_bootmgr_process_add_boot_option(void *data, bool
*exit);
+static efi_status_t efi_bootmgr_process_delete_boot_option(void *data, bool
*exit);
+static efi_status_t efi_bootmgr_process_change_boot_order(void *data, bool
*exit);
static struct efi_bootmgr_menu_item bootmgr_menu_items[] = {
{u"Boot Manager", efi_bootmgr_process_boot_selection},
+ {u"Boot Manager maintenance", efi_bootmgr_process_maintenance},
{u"Quit", NULL},
};
+static struct efi_bootmgr_menu_item maintenance_menu_items[] = {
+ {u"Add Boot Option", efi_bootmgr_process_add_boot_option},
+ {u"Delete Boot Option", efi_bootmgr_process_delete_boot_option},
+ {u"Change Boot Order", efi_bootmgr_process_change_boot_order},
+ {u"Quit", NULL},
+};
+
+struct efi_bootmgr_boot_option {
+ struct efi_simple_file_system_protocol *current_volume;
+ struct efi_device_path *dp_volume;
+ u16 *current_path;
+ u16 *boot_name;
+ bool file_selected;
+};
+
+static const struct efi_device_path END = {
+ .type = DEVICE_PATH_TYPE_END,
+ .sub_type = DEVICE_PATH_SUB_TYPE_END,
+ .length = sizeof(END),
+};
+
+struct efi_bootmgr_volume_entry_data {
+ struct efi_bootmgr_boot_option *bo;
+ struct efi_simple_file_system_protocol *v;
+ struct efi_device_path *dp;
+};
+
+struct efi_bootmgr_file_entry_data {
+ struct efi_bootmgr_boot_option *bo;
+ struct efi_file_info *f;
+};
+
static void efi_bootmgr_menu_print_entry(void *data)
{
struct efi_bootmgr_menu_entry *entry = data;
@@ -558,6 +597,687 @@ static efi_status_t
efi_bootmgr_process_boot_selection(void *data, bool *exit)
return ret;
}
+static efi_status_t efi_bootmgr_volume_selected(void *data, bool *exit)
+{
+ struct efi_bootmgr_volume_entry_data *info = data;
+
+ *exit = true;
+
+ if (info) {
+ info->bo->current_volume = info->v;
+ info->bo->dp_volume = info->dp;
+ }
+
+ return EFI_SUCCESS;
+}
+
+static efi_status_t efi_bootmgr_file_selected(void *data, bool *exit)
+{
+ struct efi_bootmgr_file_entry_data *info = data;
+
+ *exit = true;
+
+ if (!info)
+ return EFI_INVALID_PARAMETER;
+
+ if (u16_strncmp(info->f->file_name, u".", 1) == 0 &&
+ u16_strlen(info->f->file_name) == 1) {
+ /* stay current path */
+ } else if (u16_strncmp(info->f->file_name, u"..", 2) == 0 &&
+ u16_strlen(info->f->file_name) == 2) {
+ u32 i;
+ int len = u16_strlen(info->bo->current_path);
+
+ for (i = len - 2; i > 0; i--) {
+ if (info->bo->current_path[i] == u'\\')
+ break;
+ }
+
+ if (i == 0)
+ info->bo->current_path[0] = u'\0';
+ else
+ info->bo->current_path[i + 1] = u'\0';
+ } else {
+ size_t new_len;
+
+ new_len = u16_strlen(info->bo->current_path) +
+ u16_strlen(info->f->file_name) + 1;
+ if (new_len >= EFI_BOOTMGR_FILE_PATH_MAX) {
+ /* TODO: show error notification to user */
+ log_err("file path is too long\n");
+ return EFI_INVALID_PARAMETER;
+ }
+ u16_strcat(info->bo->current_path, info->f->file_name);
+ if (info->f->attribute & EFI_FILE_DIRECTORY) {
+ if (new_len + 1 >= EFI_BOOTMGR_FILE_PATH_MAX) {
+ log_err("file path is too long\n");
+ return EFI_INVALID_PARAMETER;
+ }
+ u16_strcat(info->bo->current_path, u"\\");
+ } else {
+ info->bo->file_selected = true;
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+static efi_status_t efi_bootmgr_select_volume(struct efi_bootmgr_boot_option
*bo)
+{
+ u16 *name;
+ u32 i;
+ efi_status_t ret;
+ efi_uintn_t count;
+ struct efi_device_path *device_path;
+ efi_handle_t *volume_handles = NULL;
+ struct efi_simple_file_system_protocol *v;
+ struct efi_device_path_to_text_protocol *text;
+ struct efi_bootmgr_menu_item *menu_item, *iter;
+
+ ret = EFI_CALL(efi_locate_handle_buffer(BY_PROTOCOL,
&efi_system_partition_guid,
+ NULL, &count,
+ (efi_handle_t
**)&volume_handles));
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ ret =
EFI_CALL(systab.boottime->locate_protocol(&efi_guid_device_path_to_text_protocol,
+ NULL, (void **)&text));
+ if (ret != EFI_SUCCESS)
+ goto out1;
+
+ menu_item = calloc(count + 1, sizeof(struct efi_bootmgr_menu_item));
+ if (!menu_item) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out1;
+ }
+
+ iter = menu_item;
+ for (i = 0; i < count; i++) {
+ struct efi_bootmgr_volume_entry_data *info;
+
+ ret = EFI_CALL(systab.boottime->open_protocol(volume_handles[i],
+
&efi_simple_file_system_protocol_guid,
+ (void **)&v, efi_root, NULL,
+
EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+ if (ret != EFI_SUCCESS)
+ continue;
+
+ ret = EFI_CALL(systab.boottime->open_protocol(volume_handles[i],
+ &efi_guid_device_path,
+ (void **)&device_path,
efi_root, NULL,
+
EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+ if (ret != EFI_SUCCESS)
+ continue;
+
+ name = text->convert_device_path_to_text(device_path, true,
true);
+ if (!name) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out2;
+ }
+
+ info = calloc(1, sizeof(struct efi_bootmgr_volume_entry_data));
+ if (!info) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out2;
+ }
+
+ info->v = v;
+ info->dp = device_path;
+ info->bo = bo;
+ iter->title = name;
+ iter->func = efi_bootmgr_volume_selected;
+ iter->data = info;
+ iter++;
+ }
+
+ iter->title = u"Quit";
+ iter->func = NULL;
+ iter->data = NULL;
+ count += 1;
+
+ ret = efi_bootmgr_process_common(menu_item, count, false);
+
+out2:
+ iter = menu_item;
+ for (i = 0; i < count - 1; i++) {
+ struct efi_bootmgr_volume_entry_data *p;
+
+ p = (struct efi_bootmgr_volume_entry_data *)(iter->data);
+ efi_free_pool(iter->title);
+ free(p);
+ iter++;
+ }
+
+ free(menu_item);
+
+out1:
+ efi_free_pool(volume_handles);
+
+ return ret;
+}
+
+static efi_status_t efi_bootmgr_select_file(struct efi_bootmgr_boot_option *bo,
+ struct efi_file_handle *root)
+{
+ char *buf;
+ u32 i;
+ char *dir_buf;
+ efi_uintn_t len;
+ efi_status_t ret;
+ efi_uintn_t size;
+ u32 count = 0;
+ struct efi_file_handle *f;
+ struct efi_file_info *ptr;
+ struct efi_bootmgr_menu_item *menu_item, *iter;
+
+ buf = calloc(1, EFI_BOOTMGR_FILE_PATH_MAX);
+ if (!buf)
+ return EFI_OUT_OF_RESOURCES;
+
+ while (!bo->file_selected) {
+ size = 0;
+ count = 0;
+
+ ret = EFI_CALL(root->open(root, &f, bo->current_path,
+ EFI_FILE_MODE_READ, 0));
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ /* calculate directory information total size */
+ for (;;) {
+ len = EFI_BOOTMGR_FILE_PATH_MAX;
+ ret = EFI_CALL(f->read(f, &len, buf));
+ if (ret != EFI_SUCCESS || len == 0)
+ break;
+
+ size += len;
+ count++;
+ }
+
+ dir_buf = calloc(1, size);
+ if (!dir_buf) {
+ EFI_CALL(f->close(f));
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out;
+ }
+ menu_item = calloc(count + 1, sizeof(struct
efi_bootmgr_menu_item));
+ if (!menu_item) {
+ EFI_CALL(f->close(f));
+ free(dir_buf);
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out;
+ }
+
+ /* read directory and construct menu structure */
+ f->setpos(f, 0);
+ iter = menu_item;
+ ptr = (struct efi_file_info *)dir_buf;
+ for (i = 0; i < count; i++) {
+ int name_len;
+ u16 *name;
+ struct efi_bootmgr_file_entry_data *info;
+
+ len = size;
+ ret = EFI_CALL(f->read(f, &len, ptr));
+ if (ret != EFI_SUCCESS || len == 0)
+ goto err;
+
+ if (ptr->attribute & EFI_FILE_DIRECTORY) {
+ /* append u'/' at the end of directory name */
+ name_len = u16_strsize(ptr->file_name) +
sizeof(u16);
+ name = calloc(1, name_len);
+ if (!name) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto err;
+ }
+ u16_strcpy(name, ptr->file_name);
+ name[u16_strlen(ptr->file_name)] = u'/';
+ } else {
+ name_len = u16_strsize(ptr->file_name);
+ name = calloc(1, name_len);
+ if (!name) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto err;
+ }
+ u16_strcpy(name, ptr->file_name);
+ }
+
+ info = calloc(1, sizeof(struct
efi_bootmgr_file_entry_data));
+ if (!info) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto err;
+ }
+ info->f = ptr;
+ info->bo = bo;
+ iter->title = name;
+ iter->func = efi_bootmgr_file_selected;
+ iter->data = info;
+ iter++;
+
+ size -= len;
+ ptr = (struct efi_file_info *)((char *)ptr + len);
+ }
+
+ /* add "Quit" entry */
+ iter->title = u"Quit";
+ iter->func = NULL;
+ iter->data = NULL;
+ count += 1;
+
+ ret = efi_bootmgr_process_common(menu_item, count, false);
+err:
+ EFI_CALL(f->close(f));
+ iter = menu_item;
+ for (i = 0; i < count - 1; i++, iter++) {
+ free(iter->title);
+ free(iter->data);
+ }
+
+ free(dir_buf);
+ free(menu_item);
+
+ if (ret != EFI_SUCCESS)
+ break;
+ }
+
+out:
+ free(buf);
+ return ret;
+}
+
+static efi_status_t efi_bootmgr_boot_add_enter_name(struct
efi_bootmgr_boot_option *bo)
+{
+ int c;
+ int len = 0;
+ char name[EFI_BOOTMGR_BOOT_NAME_MAX] = {0};
+
+ puts(ANSI_CLEAR_CONSOLE);
+
+ printf(ANSI_CURSOR_POSITION, 1, 1);
+ puts(ANSI_CLEAR_LINE);
+ printf(ANSI_CURSOR_POSITION, 2, 1);
+ puts(" *** U-Boot EFI Boot Manager Menu ***");
+ puts(ANSI_CLEAR_LINE_TO_END);
+ printf(ANSI_CURSOR_POSITION, 3, 1);
+ puts(ANSI_CLEAR_LINE);
+ printf(ANSI_CURSOR_POSITION, 4, 1);
+ puts(" enter name:");
+ puts(ANSI_CLEAR_LINE_TO_END);
+
+ printf(ANSI_CURSOR_POSITION, 8, 1);
+ puts(ANSI_CLEAR_LINE);
+ puts(" ENTER to complete, ESC/CTRL+C to quit");
+
+ printf(ANSI_CURSOR_POSITION, 4, 15);
+ puts(ANSI_CURSOR_SHOW);
+
+ for (;;) {
+ while (!tstc()) {
+ WATCHDOG_RESET();
+ mdelay(10);
+ }
+
+ c = getchar();
+
+ if ((c == ' ') || (('0' <= c) && (c <= '9')) ||
+ (('A' <= c) && (c <= 'Z')) || (('a' <= c) && (c <= 'z'))) {
+ if (len >= (EFI_BOOTMGR_BOOT_NAME_MAX - 1))
+ continue;
+
+ name[len] = (char)c;
+ len++;
+ printf(ANSI_CURSOR_POSITION, 4, 15);
+ puts(ANSI_CLEAR_LINE_TO_END);
+ printf("%s", name);
+ } else if (c == '\b') {
+ if (len > 0)
+ name[--len] = '\0';
+
+ printf(ANSI_CURSOR_POSITION, 4, 15);
+ puts(ANSI_CLEAR_LINE_TO_END);
+ printf("%s", name);
+ } else if (c == '\r') {
+ u16 *p;
+
+ name[len] = '\0';
+ p = bo->boot_name;
+ utf8_utf16_strncpy(&p, name, len);
+ return EFI_SUCCESS;
+ } else if (c == 0x3) {
+ return EFI_ABORTED;
+ } else if (c == '\e') { /* TODO: correctly handle escape
sequence */
+ return EFI_ABORTED;
+ }
+ }
+}
+
+static efi_status_t efi_bootmgr_change_boot_order(int selected, int max, int
*new)
+{
+ int c;
+ int len = 0;
+ char new_order[6] = {0};
+
+ puts(ANSI_CLEAR_CONSOLE);
+
+ printf(ANSI_CURSOR_POSITION, 1, 1);
+ puts(ANSI_CLEAR_LINE);
+ printf(ANSI_CURSOR_POSITION, 2, 1);
+ puts(" *** U-Boot EFI Boot Manager Menu ***");
+ puts(ANSI_CLEAR_LINE_TO_END);
+ printf(ANSI_CURSOR_POSITION, 3, 1);
+ puts(ANSI_CLEAR_LINE);
+ printf(ANSI_CURSOR_POSITION, 4, 1);
+ printf(" current boot order : %d", selected);
+ puts(ANSI_CLEAR_LINE_TO_END);
+
+ printf(ANSI_CURSOR_POSITION, 5, 1);
+ puts(ANSI_CLEAR_LINE);
+ printf(ANSI_CURSOR_POSITION, 6, 1);
+ printf(" new boot order(0 - %4d): ", max);
+ puts(ANSI_CLEAR_LINE_TO_END);
+
+ printf(ANSI_CURSOR_POSITION, 8, 1);
+ puts(ANSI_CLEAR_LINE);
+ puts(" ENTER to complete, ESC/CTRL+C to quit");
+
+ printf(ANSI_CURSOR_POSITION, 6, 29);
+ puts(ANSI_CURSOR_SHOW);
+
+ for (;;) {
+ while (!tstc()) {
+ WATCHDOG_RESET();
+ mdelay(10);
+ }
+
+ c = getchar();
+
+ if ('0' <= c && c <= '9') {
+ if (len >= 5)
+ continue;
+
+ new_order[len] = (char)c;
+ len++;
+ printf(ANSI_CURSOR_POSITION, 6, 29);
+ puts(ANSI_CLEAR_LINE_TO_END);
+ printf("%s", new_order);
+ } else if (c == '\b') {
+ if (len > 0)
+ new_order[--len] = '\0';
+
+ printf(ANSI_CURSOR_POSITION, 6, 29);
+ puts(ANSI_CLEAR_LINE_TO_END);
+ printf("%s", new_order);
+ } else if (c == '\r') {
+ int i;
+ int val = 0;
+
+ for (i = 0; i < len; i++)
+ val = (val * 10) + (new_order[i] - '0');
+
+ if (val > max) /* TODO: show error notification */
+ continue;
+
+ *new = val;
+ return EFI_SUCCESS;
+ } else if (c == 0x3) {
+ return EFI_ABORTED;
+ } else if (c == '\e') { /* TODO: correctly handle escape
sequence */
+ return EFI_ABORTED;
+ }
+ }
+}
+
+static efi_status_t efi_bootmgr_select_file_handler(struct
efi_bootmgr_boot_option *bo)
+{
+ efi_status_t ret;
+ struct efi_file_handle *root;
+
+ bo->file_selected = false;
+
+ while (!bo->file_selected) {
+ bo->current_volume = NULL;
+ memset(bo->current_path, 0, sizeof(bo->current_path));
+
+ ret = efi_bootmgr_select_volume(bo);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ if (!bo->current_volume)
+ return EFI_INVALID_PARAMETER;
+
+ ret =
EFI_CALL(bo->current_volume->open_volume(bo->current_volume, &root));
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ ret = efi_bootmgr_select_file(bo, root);
+
+ if (ret != EFI_SUCCESS)
+ goto out;
+ }
+
+ ret = efi_bootmgr_boot_add_enter_name(bo);
+
+out:
+ return ret;
+}
+
+static efi_status_t efi_bootmgr_process_maintenance(void *data, bool *exit)
+{
+ return efi_bootmgr_process_common(maintenance_menu_items,
+ ARRAY_SIZE(maintenance_menu_items),
+ false);
+}
+
+static efi_status_t efi_bootmgr_process_add_boot_option(void *data, bool *exit)
+{
+ u32 index;
+ void *p = NULL;
+ char *buf = NULL;
+ efi_status_t ret;
+ char *iter = NULL;
+ u16 var_name[9];
+ u16 *bootorder = NULL;
+ u16 *new_bootorder = NULL;
+ struct efi_load_option lo;
+ efi_uintn_t dp_size, fp_size;
+ efi_uintn_t last, size, new_size;
+ struct efi_bootmgr_boot_option bo;
+ struct efi_device_path_file_path *fp;
+
+ /* get unused Boot#### */
+ for (index = 0; index <= 0xFFFF; index++) {
+ size = 0;
+ efi_create_indexed_name(var_name, sizeof(var_name), "Boot",
index);
+ ret = efi_get_variable_int(var_name, &efi_global_variable_guid,
+ NULL, &size, NULL, NULL);
+ if (ret == EFI_BUFFER_TOO_SMALL)
+ continue;
+ else
+ break;
+ }
+
+ if (index >= 0xFFFF)
+ return EFI_OUT_OF_RESOURCES;
+
+ efi_create_indexed_name(var_name, sizeof(var_name), "Boot", index);
+
+ bo.current_path = calloc(1, EFI_BOOTMGR_FILE_PATH_MAX);
+ if (!bo.current_path)
+ goto out;
+
+ bo.boot_name = calloc(1, EFI_BOOTMGR_BOOT_NAME_MAX * sizeof(u16));
+ if (!bo.boot_name)
+ goto out;
+
+ ret = efi_bootmgr_select_file_handler(&bo);
+ if (ret == EFI_ABORTED)
+ goto out;
+
+ dp_size = efi_dp_size(bo.dp_volume);
+ fp_size = sizeof(struct efi_device_path) +
+ ((u16_strlen(bo.current_path) + 1) * sizeof(u16));
+ buf = calloc(1, dp_size + fp_size + sizeof(END));
+ if (!buf)
+ goto out;
+
+ iter = buf;
+ memcpy(iter, bo.dp_volume, dp_size);
+ iter += dp_size;
+
+ fp = (struct efi_device_path_file_path *)iter;
+ fp->dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
+ fp->dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
+ fp->dp.length = (u16)fp_size;
+ u16_strcpy(fp->str, bo.current_path);
+ iter += fp_size;
+ *((struct efi_device_path *)iter) = END;
+
+ lo.file_path = (struct efi_device_path *)buf;
+ lo.file_path_length = efi_dp_size((struct efi_device_path *)buf) +
sizeof(END);
+ lo.attributes = LOAD_OPTION_ACTIVE;
+ lo.optional_data = NULL;
+ lo.label = bo.boot_name;
+
+ size = efi_serialize_load_option(&lo, (u8 **)&p);
+ if (!size) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ ret = efi_set_variable_int(var_name, &efi_global_variable_guid,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ size, p, false);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ /* append new boot option */
+ bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
+ last = size / sizeof(u16);
+ new_size = size + sizeof(u16);
+ new_bootorder = calloc(1, new_size);
+ if (!new_bootorder) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out;
+ }
+ memcpy(new_bootorder, bootorder, size);
+ new_bootorder[last] = (u16)index;
+
+ ret = efi_set_variable_int(u"BootOrder", &efi_global_variable_guid,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ new_size, new_bootorder, false);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+out:
+ free(p);
+ free(buf);
+ free(bootorder);
+ free(new_bootorder);
+ free(bo.boot_name);
+ free(bo.current_path);
+
+ return ret;
+}
+
+static efi_status_t efi_bootmgr_process_delete_boot_option(void *data, bool
*exit)
+{
+ int selected;
+ u16 *bootorder;
+ u16 var_name[9];
+ efi_status_t ret;
+ efi_uintn_t num, size;
+
+ bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
+ if (!bootorder) {
+ ret = EFI_NOT_FOUND;
+ return ret;
+ }
+
+ num = size / sizeof(u16);
+ ret = efi_bootmgr_show_boot_selection(bootorder, num, &selected);
+ if (ret == EFI_SUCCESS) {
+ /* delete selected boot option */
+ efi_create_indexed_name(var_name, sizeof(var_name),
+ "Boot", bootorder[selected]);
+ ret = efi_set_variable_int(var_name, &efi_global_variable_guid,
+ 0, 0, NULL, false);
+ if (ret != EFI_SUCCESS) {
+ log_err("delete boot option(%ls) failed\n", var_name);
+ goto out;
+ }
+
+ /* update BootOrder */
+ memmove(&bootorder[selected], &bootorder[selected + 1],
+ (num - selected - 1) * sizeof(u16));
+ size -= sizeof(u16);
+ ret = efi_set_variable_int(u"BootOrder",
&efi_global_variable_guid,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ size, bootorder, false);
+ if (ret != EFI_SUCCESS)
+ goto out;
+ }
+
+out:
+ free(bootorder);
+
+ return ret;
+}
+
+static efi_status_t efi_bootmgr_process_change_boot_order(void *data, bool
*exit)
+{
+ int selected;
+ int new_order;
+ efi_status_t ret;
+ efi_uintn_t num, size;
+ u16 *bootorder = NULL;
+ u16 *new_bootorder = NULL;
+
+ bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
+ if (!bootorder)
+ return EFI_NOT_FOUND;
+
+ num = size / sizeof(u16);
+ ret = efi_bootmgr_show_boot_selection(bootorder, num, &selected);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = efi_bootmgr_change_boot_order(selected, num - 1, &new_order);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ new_bootorder = calloc(1, size);
+ if (!new_bootorder)
+ goto out;
+
+ memcpy(new_bootorder, bootorder, size);
+ if (selected > new_order) {
+ new_bootorder[new_order] = bootorder[selected];
+ memcpy(&new_bootorder[new_order + 1], &bootorder[new_order],
+ (selected - new_order) * sizeof(u16));
+ } else if (selected < new_order) {
+ new_bootorder[new_order] = bootorder[selected];
+ memcpy(&new_bootorder[selected], &bootorder[selected + 1],
+ (new_order - selected) * sizeof(u16));
+ } else {
+ /* nothing to change */
+ }
+ ret = efi_set_variable_int(u"BootOrder", &efi_global_variable_guid,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ size, new_bootorder, false);
+ free(new_bootorder);
+out:
+ free(bootorder);
+
+ return ret;
+}
+
/**
* try_load_entry() - try to load image for boot option
*
--
2.17.1
