Message ID | 20230531174515.41758-2-raymond.mao@linaro.org |
---|---|
State | Superseded |
Delegated to: | Heinrich Schuchardt |
Headers | show |
Series | Boot variables management for removable media | expand |
On 5/31/23 19:45, Raymond Mao wrote: > Rename and move bootorder and bootoption apis from cmd to lib > for re-use between eficonfig and bootmgr > > Signed-off-by: Raymond Mao <raymond.mao@linaro.org> > Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> > --- > Changes in v3 > - Split the patch into moving and renaming functions and > individual patches for each changed functionality > Changes in v6 > - Revert v3 changes in function > efi_bootmgr_update_media_device_boot_option and > efi_bootmgr_delete_invalid_boot_option > > cmd/bootmenu.c | 2 +- > cmd/eficonfig.c | 408 +---------------------------------- > include/efi_config.h | 5 - > include/efi_loader.h | 11 + > lib/efi_loader/efi_bootmgr.c | 375 ++++++++++++++++++++++++++++++++ > lib/efi_loader/efi_helper.c | 25 +++ > 6 files changed, 418 insertions(+), 408 deletions(-) > > diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c > index 6baeedc69f..01daddca7b 100644 > --- a/cmd/bootmenu.c > +++ b/cmd/bootmenu.c > @@ -351,7 +351,7 @@ static struct bootmenu_data *bootmenu_create(int delay) > * UEFI specification requires booting from removal media using > * a architecture-specific default image name such as BOOTAA64.EFI. > */ > - efi_ret = eficonfig_generate_media_device_boot_option(); > + efi_ret = efi_bootmgr_update_media_device_boot_option(); > if (efi_ret != EFI_SUCCESS && efi_ret != EFI_NOT_FOUND) > goto cleanup; > > diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c > index 720f52b48b..82a80306f4 100644 > --- a/cmd/eficonfig.c > +++ b/cmd/eficonfig.c > @@ -1134,43 +1134,6 @@ out: > return ret; > } > > -/** > - * eficonfig_get_unused_bootoption() - get unused "Boot####" index > - * > - * @buf: pointer to the buffer to store boot option variable name > - * @buf_size: buffer size > - * @index: pointer to store the index in the BootOrder variable > - * Return: status code > - */ > -efi_status_t eficonfig_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, > - unsigned int *index) > -{ > - u32 i; > - efi_status_t ret; > - efi_uintn_t size; > - > - if (buf_size < u16_strsize(u"Boot####")) > - return EFI_BUFFER_TOO_SMALL; > - > - for (i = 0; i <= 0xFFFF; i++) { > - size = 0; > - efi_create_indexed_name(buf, buf_size, "Boot", i); > - ret = efi_get_variable_int(buf, &efi_global_variable_guid, > - NULL, &size, NULL, NULL); > - if (ret == EFI_BUFFER_TOO_SMALL) > - continue; > - else > - break; > - } > - > - if (i > 0xFFFF) > - return EFI_OUT_OF_RESOURCES; > - > - *index = i; > - > - return EFI_SUCCESS; > -} > - > /** > * eficonfig_set_boot_option() - set boot option > * > @@ -1208,46 +1171,6 @@ static efi_status_t eficonfig_set_boot_option(u16 *varname, struct efi_device_pa > return ret; > } > > -/** > - * eficonfig_append_bootorder() - append new boot option in BootOrder variable > - * > - * @index: "Boot####" index to append to BootOrder variable > - * Return: status code > - */ > -efi_status_t eficonfig_append_bootorder(u16 index) > -{ > - u16 *bootorder; > - efi_status_t ret; > - u16 *new_bootorder = NULL; > - efi_uintn_t last, size, new_size; > - > - /* 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] = 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(bootorder); > - free(new_bootorder); > - > - return ret; > -} > - > /** > * create_boot_option_entry() - create boot option entry > * > @@ -1619,7 +1542,7 @@ static efi_status_t eficonfig_process_add_boot_option(void *data) > if (!bo) > return EFI_OUT_OF_RESOURCES; > > - ret = eficonfig_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index); > + ret = efi_bootmgr_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index); > if (ret != EFI_SUCCESS) > return ret; > > @@ -1627,7 +1550,7 @@ static efi_status_t eficonfig_process_add_boot_option(void *data) > if (ret != EFI_SUCCESS) > goto out; > > - ret = eficonfig_append_bootorder((u16)bo->boot_index); > + ret = efi_bootmgr_append_bootorder((u16)bo->boot_index); > if (ret != EFI_SUCCESS) > goto out; > > @@ -1656,31 +1579,6 @@ static efi_status_t eficonfig_process_boot_selected(void *data) > return EFI_SUCCESS; > } > > -/** > - * search_bootorder() - search the boot option index in BootOrder > - * > - * @bootorder: pointer to the BootOrder variable > - * @num: number of BootOrder entry > - * @target: target boot option index to search > - * @index: pointer to store the index of BootOrder variable > - * Return: true if exists, false otherwise > - */ > -static bool search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index) > -{ > - u32 i; > - > - for (i = 0; i < num; i++) { > - if (target == bootorder[i]) { > - if (index) > - *index = i; > - > - return true; > - } > - } > - > - return false; > -} > - > /** > * eficonfig_add_boot_selection_entry() - add boot option menu entry > * > @@ -1805,7 +1703,7 @@ static efi_status_t eficonfig_show_boot_selection(unsigned int *selected) > > if (efi_varname_is_load_option(var_name16, &index)) { > /* If the index is included in the BootOrder, skip it */ > - if (search_bootorder(bootorder, num, index, NULL)) > + if (efi_search_bootorder(bootorder, num, index, NULL)) > continue; > > ret = eficonfig_add_boot_selection_entry(efi_menu, index, selected); > @@ -2202,7 +2100,7 @@ static efi_status_t eficonfig_create_change_boot_order_entry(struct efimenu *efi > > if (efi_varname_is_load_option(var_name16, &index)) { > /* If the index is included in the BootOrder, skip it */ > - if (search_bootorder(bootorder, num, index, NULL)) > + if (efi_search_bootorder(bootorder, num, index, NULL)) > continue; > > ret = eficonfig_add_change_boot_order_entry(efi_menu, index, false); > @@ -2304,50 +2202,6 @@ out: > return ret; > } > > -/** > - * delete_boot_option() - delete selected boot option > - * > - * @boot_index: boot option index to delete > - * Return: status code > - */ > -static efi_status_t delete_boot_option(u16 boot_index) > -{ > - u16 *bootorder; > - u16 varname[9]; > - efi_status_t ret; > - unsigned int index; > - efi_uintn_t num, size; > - > - efi_create_indexed_name(varname, sizeof(varname), > - "Boot", boot_index); > - ret = efi_set_variable_int(varname, &efi_global_variable_guid, > - 0, 0, NULL, false); > - if (ret != EFI_SUCCESS) { > - log_err("delete boot option(%ls) failed\n", varname); > - return ret; > - } > - > - /* update BootOrder if necessary */ > - bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size); > - if (!bootorder) > - return EFI_SUCCESS; > - > - num = size / sizeof(u16); > - if (!search_bootorder(bootorder, num, boot_index, &index)) > - return EFI_SUCCESS; > - > - memmove(&bootorder[index], &bootorder[index + 1], > - (num - index - 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); > - > - return ret; > -} > - > /** > * eficonfig_process_delete_boot_option() - handler to delete boot option > * > @@ -2362,7 +2216,7 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) > while (1) { > ret = eficonfig_show_boot_selection(&selected); > if (ret == EFI_SUCCESS) > - ret = delete_boot_option(selected); > + ret = efi_bootmgr_delete_boot_option(selected); > > if (ret != EFI_SUCCESS) > break; > @@ -2374,256 +2228,6 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) > return ret; > } > > -/** > - * eficonfig_enumerate_boot_option() - enumerate the possible bootable media > - * > - * @opt: pointer to the media boot option structure > - * @volume_handles: pointer to the efi handles > - * @count: number of efi handle > - * Return: status code > - */ > -efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt, > - efi_handle_t *volume_handles, efi_status_t count) > -{ > - u32 i; > - struct efi_handler *handler; > - efi_status_t ret = EFI_SUCCESS; > - > - for (i = 0; i < count; i++) { > - u16 *p; > - u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; > - char *optional_data; > - struct efi_load_option lo; > - char buf[BOOTMENU_DEVICE_NAME_MAX]; > - struct efi_device_path *device_path; > - > - ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); > - if (ret != EFI_SUCCESS) > - continue; > - ret = efi_protocol_open(handler, (void **)&device_path, > - efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); > - if (ret != EFI_SUCCESS) > - continue; > - > - ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); > - if (ret != EFI_SUCCESS) > - continue; > - > - p = dev_name; > - utf8_utf16_strncpy(&p, buf, strlen(buf)); > - > - lo.label = dev_name; > - lo.attributes = LOAD_OPTION_ACTIVE; > - lo.file_path = device_path; > - lo.file_path_length = efi_dp_size(device_path) + sizeof(END); > - /* > - * Set the dedicated guid to optional_data, it is used to identify > - * the boot option that automatically generated by the bootmenu. > - * efi_serialize_load_option() expects optional_data is null-terminated > - * utf8 string, so set the "1234567" string to allocate enough space > - * to store guid, instead of realloc the load_option. > - */ > - lo.optional_data = "1234567"; > - opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); > - if (!opt[i].size) { > - ret = EFI_OUT_OF_RESOURCES; > - goto out; > - } > - /* set the guid */ > - optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); > - memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); > - } > - > -out: > - return ret; > -} > - > -/** > - * eficonfig_delete_invalid_boot_option() - delete non-existing boot option > - * > - * @opt: pointer to the media boot option structure > - * @count: number of media boot option structure > - * Return: status code > - */ > -efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, > - efi_status_t count) > -{ > - efi_uintn_t size; > - void *load_option; > - u32 i, list_size = 0; > - struct efi_load_option lo; > - u16 *var_name16 = NULL; > - u16 varname[] = u"Boot####"; > - efi_status_t ret = EFI_SUCCESS; > - u16 *delete_index_list = NULL, *p; > - efi_uintn_t buf_size; > - > - buf_size = 128; > - var_name16 = malloc(buf_size); > - if (!var_name16) > - return EFI_OUT_OF_RESOURCES; > - > - var_name16[0] = 0; > - for (;;) { > - int index; > - efi_guid_t guid; > - efi_uintn_t tmp; > - > - ret = efi_next_variable_name(&buf_size, &var_name16, &guid); > - if (ret == EFI_NOT_FOUND) { > - /* > - * EFI_NOT_FOUND indicates we retrieved all EFI variables. > - * This should be treated as success. > - */ > - ret = EFI_SUCCESS; > - break; > - } > - if (ret != EFI_SUCCESS) > - goto out; > - > - if (!efi_varname_is_load_option(var_name16, &index)) > - continue; > - > - efi_create_indexed_name(varname, sizeof(varname), "Boot", index); > - load_option = efi_get_var(varname, &efi_global_variable_guid, &size); > - if (!load_option) > - continue; > - > - tmp = size; > - ret = efi_deserialize_load_option(&lo, load_option, &size); > - if (ret != EFI_SUCCESS) > - goto next; > - > - if (size >= sizeof(efi_guid_bootmenu_auto_generated) && > - !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) { > - for (i = 0; i < count; i++) { > - if (opt[i].size == tmp && > - memcmp(opt[i].lo, load_option, tmp) == 0) { > - opt[i].exist = true; > - break; > - } > - } > - > - /* > - * The entire list of variables must be retrieved by > - * efi_get_next_variable_name_int() before deleting the invalid > - * boot option, just save the index here. > - */ > - if (i == count) { > - p = realloc(delete_index_list, sizeof(u32) * > - (list_size + 1)); > - if (!p) { > - ret = EFI_OUT_OF_RESOURCES; > - goto out; > - } > - delete_index_list = p; > - delete_index_list[list_size++] = index; > - } > - } > -next: > - free(load_option); > - } > - > - /* delete all invalid boot options */ > - for (i = 0; i < list_size; i++) { > - ret = delete_boot_option(delete_index_list[i]); > - if (ret != EFI_SUCCESS) > - goto out; > - } > - > -out: > - free(var_name16); > - free(delete_index_list); > - > - return ret; > -} > - > -/** > - * eficonfig_generate_media_device_boot_option() - generate the media device boot option > - * > - * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL > - * and generate the bootmenu entries. > - * This function also provide the BOOT#### variable maintenance for > - * the media device entries. > - * - Automatically create the BOOT#### variable for the newly detected device, > - * this BOOT#### variable is distinguished by the special GUID > - * stored in the EFI_LOAD_OPTION.optional_data > - * - If the device is not attached to the system, the associated BOOT#### variable > - * is automatically deleted. > - * > - * Return: status code > - */ > -efi_status_t eficonfig_generate_media_device_boot_option(void) > -{ > - u32 i; > - efi_status_t ret; > - efi_uintn_t count; > - efi_handle_t *volume_handles = NULL; > - struct eficonfig_media_boot_option *opt = NULL; > - > - ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid, > - NULL, &count, (efi_handle_t **)&volume_handles); > - if (ret != EFI_SUCCESS) > - return ret; > - > - opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); > - if (!opt) > - goto out; > - > - /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ > - ret = eficonfig_enumerate_boot_option(opt, volume_handles, count); > - if (ret != EFI_SUCCESS) > - goto out; > - > - /* > - * System hardware configuration may vary depending on the user setup. > - * The boot option is automatically added by the bootmenu. > - * If the device is not attached to the system, the boot option needs > - * to be deleted. > - */ > - ret = eficonfig_delete_invalid_boot_option(opt, count); > - if (ret != EFI_SUCCESS) > - goto out; > - > - /* add non-existent boot option */ > - for (i = 0; i < count; i++) { > - u32 boot_index; > - u16 var_name[9]; > - > - if (!opt[i].exist) { > - ret = eficonfig_get_unused_bootoption(var_name, sizeof(var_name), > - &boot_index); > - if (ret != EFI_SUCCESS) > - 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, > - opt[i].size, opt[i].lo, false); > - if (ret != EFI_SUCCESS) > - goto out; > - > - ret = eficonfig_append_bootorder(boot_index); > - if (ret != EFI_SUCCESS) { > - efi_set_variable_int(var_name, &efi_global_variable_guid, > - 0, 0, NULL, false); > - goto out; > - } > - } > - } > - > -out: > - if (opt) { > - for (i = 0; i < count; i++) > - free(opt[i].lo); > - } > - free(opt); > - efi_free_pool(volume_handles); > - > - return ret; > -} > - > /** > * eficonfig_init() - do required initialization for eficonfig command > * > @@ -2709,7 +2313,7 @@ static int do_eficonfig(struct cmd_tbl *cmdtp, int flag, int argc, char *const a > if (ret != EFI_SUCCESS) > return CMD_RET_FAILURE; > > - ret = eficonfig_generate_media_device_boot_option(); > + ret = efi_bootmgr_update_media_device_boot_option(); > if (ret != EFI_SUCCESS && ret != EFI_NOT_FOUND) > return ret; > > diff --git a/include/efi_config.h b/include/efi_config.h > index 01ce9b2b06..d7c1601137 100644 > --- a/include/efi_config.h > +++ b/include/efi_config.h > @@ -105,11 +105,6 @@ efi_status_t eficonfig_process_common(struct efimenu *efi_menu, > void (*item_data_print)(void *), > char *(*item_choice)(void *)); > efi_status_t eficonfig_process_select_file(void *data); > -efi_status_t eficonfig_get_unused_bootoption(u16 *buf, > - efi_uintn_t buf_size, u32 *index); > -efi_status_t eficonfig_append_bootorder(u16 index); > -efi_status_t eficonfig_generate_media_device_boot_option(void); > - > efi_status_t eficonfig_append_menu_entry(struct efimenu *efi_menu, > char *title, eficonfig_entry_func func, > void *data); > diff --git a/include/efi_loader.h b/include/efi_loader.h > index 1542b4b625..31ca1f5d1d 100644 > --- a/include/efi_loader.h > +++ b/include/efi_loader.h > @@ -516,6 +516,17 @@ extern struct list_head efi_register_notify_events; > int efi_init_early(void); > /* Initialize efi execution environment */ > efi_status_t efi_init_obj_list(void); > +/* Append new boot option in BootOrder variable */ > +efi_status_t efi_bootmgr_append_bootorder(u16 index); > +/* Get unused "Boot####" index */ > +efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, > + efi_uintn_t buf_size, u32 *index); > +/* Generate the media device boot option */ > +efi_status_t efi_bootmgr_update_media_device_boot_option(void); > +/* Delete selected boot option */ > +efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index); > +/* search the boot option index in BootOrder */ > +bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index); > /* Set up console modes */ > void efi_setup_console_size(void); > /* Install device tree */ > diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c > index 4b24b41047..48cd5f0636 100644 > --- a/lib/efi_loader/efi_bootmgr.c > +++ b/lib/efi_loader/efi_bootmgr.c > @@ -347,3 +347,378 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options) > error: > return ret; > } > + > +/** > + * efi_bootmgr_enumerate_boot_option() - enumerate the possible bootable media > + * > + * @opt: pointer to the media boot option structure > + * @volume_handles: pointer to the efi handles > + * @count: number of efi handle > + * Return: status code > + */ > +static efi_status_t efi_bootmgr_enumerate_boot_option(struct eficonfig_media_boot_option *opt, > + efi_handle_t *volume_handles, > + efi_status_t count) > +{ > + u32 i; > + struct efi_handler *handler; > + efi_status_t ret = EFI_SUCCESS; > + > + for (i = 0; i < count; i++) { > + u16 *p; > + u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; > + char *optional_data; > + struct efi_load_option lo; > + char buf[BOOTMENU_DEVICE_NAME_MAX]; > + struct efi_device_path *device_path; > + > + ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); > + if (ret != EFI_SUCCESS) > + continue; > + ret = efi_protocol_open(handler, (void **)&device_path, > + efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); > + if (ret != EFI_SUCCESS) > + continue; > + > + ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); > + if (ret != EFI_SUCCESS) > + continue; > + > + p = dev_name; > + utf8_utf16_strncpy(&p, buf, strlen(buf)); > + > + lo.label = dev_name; > + lo.attributes = LOAD_OPTION_ACTIVE; > + lo.file_path = device_path; > + lo.file_path_length = efi_dp_size(device_path) + sizeof(END); > + /* > + * Set the dedicated guid to optional_data, it is used to identify > + * the boot option that automatically generated by the bootmenu. > + * efi_serialize_load_option() expects optional_data is null-terminated > + * utf8 string, so set the "1234567" string to allocate enough space > + * to store guid, instead of realloc the load_option. > + */ > + lo.optional_data = "1234567"; > + opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); > + if (!opt[i].size) { > + ret = EFI_OUT_OF_RESOURCES; > + goto out; > + } > + /* set the guid */ > + optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); > + memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); > + } > + > +out: > + return ret; > +} > + > +/** > + * efi_bootmgr_delete_invalid_boot_option() - delete non-existing boot option > + * > + * @opt: pointer to the media boot option structure > + * @count: number of media boot option structure > + * Return: status code > + */ > +static efi_status_t efi_bootmgr_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, > + efi_status_t count) > +{ > + efi_uintn_t size; > + void *load_option; > + u32 i, list_size = 0; > + struct efi_load_option lo; > + u16 *var_name16 = NULL; > + u16 varname[] = u"Boot####"; > + efi_status_t ret = EFI_SUCCESS; > + u16 *delete_index_list = NULL, *p; > + efi_uintn_t buf_size; > + > + buf_size = 128; > + var_name16 = malloc(buf_size); > + if (!var_name16) > + return EFI_OUT_OF_RESOURCES; > + > + var_name16[0] = 0; > + for (;;) { > + int index; > + efi_guid_t guid; > + efi_uintn_t tmp; > + > + ret = efi_next_variable_name(&buf_size, &var_name16, &guid); > + if (ret == EFI_NOT_FOUND) { > + /* > + * EFI_NOT_FOUND indicates we retrieved all EFI variables. > + * This should be treated as success. > + */ > + ret = EFI_SUCCESS; > + break; > + } > + > + if (ret != EFI_SUCCESS) > + goto out; > + > + if (!efi_varname_is_load_option(var_name16, &index)) > + continue; > + > + efi_create_indexed_name(varname, sizeof(varname), "Boot", index); > + load_option = efi_get_var(varname, &efi_global_variable_guid, &size); > + if (!load_option) > + continue; > + > + tmp = size; > + ret = efi_deserialize_load_option(&lo, load_option, &size); > + if (ret != EFI_SUCCESS) > + goto next; > + > + if (size >= sizeof(efi_guid_bootmenu_auto_generated) && > + !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) { > + for (i = 0; i < count; i++) { > + if (opt[i].size == tmp && > + memcmp(opt[i].lo, load_option, tmp) == 0) { > + opt[i].exist = true; > + break; > + } > + } > + > + /* > + * The entire list of variables must be retrieved by > + * efi_get_next_variable_name_int() before deleting the invalid > + * boot option, just save the index here. > + */ > + if (i == count) { > + p = realloc(delete_index_list, sizeof(u32) * > + (list_size + 1)); > + if (!p) { > + ret = EFI_OUT_OF_RESOURCES; > + goto out; > + } > + delete_index_list = p; > + delete_index_list[list_size++] = index; > + } > + } > +next: > + free(load_option); > + } > + > + /* delete all invalid boot options */ > + for (i = 0; i < list_size; i++) { > + ret = efi_bootmgr_delete_boot_option(delete_index_list[i]); > + if (ret != EFI_SUCCESS) > + goto out; > + } > + > +out: > + free(var_name16); > + free(delete_index_list); > + > + return ret; > +} > + > +/** > + * efi_bootmgr_get_unused_bootoption() - get unused "Boot####" index > + * > + * @buf: pointer to the buffer to store boot option variable name > + * @buf_size: buffer size > + * @index: pointer to store the index in the BootOrder variable > + * Return: status code > + */ > +efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, > + unsigned int *index) > +{ > + u32 i; > + efi_status_t ret; > + efi_uintn_t size; > + > + if (buf_size < u16_strsize(u"Boot####")) > + return EFI_BUFFER_TOO_SMALL; > + > + for (i = 0; i <= 0xFFFF; i++) { > + size = 0; > + efi_create_indexed_name(buf, buf_size, "Boot", i); > + ret = efi_get_variable_int(buf, &efi_global_variable_guid, > + NULL, &size, NULL, NULL); > + if (ret == EFI_BUFFER_TOO_SMALL) > + continue; > + else > + break; > + } > + > + if (i > 0xFFFF) > + return EFI_OUT_OF_RESOURCES; > + > + *index = i; > + > + return EFI_SUCCESS; > +} > + > +/** > + * efi_bootmgr_append_bootorder() - append new boot option in BootOrder variable > + * > + * @index: "Boot####" index to append to BootOrder variable > + * Return: status code > + */ > +efi_status_t efi_bootmgr_append_bootorder(u16 index) > +{ > + u16 *bootorder; > + efi_status_t ret; > + u16 *new_bootorder = NULL; > + efi_uintn_t last, size, new_size; > + > + /* 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] = 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(bootorder); > + free(new_bootorder); > + > + return ret; > +} > + > +/** > + * efi_bootmgr_delete_boot_option() - delete selected boot option > + * > + * @boot_index: boot option index to delete > + * Return: status code > + */ > +efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index) > +{ > + u16 *bootorder; > + u16 varname[9]; > + efi_status_t ret; > + unsigned int index; > + efi_uintn_t num, size; > + > + efi_create_indexed_name(varname, sizeof(varname), > + "Boot", boot_index); > + ret = efi_set_variable_int(varname, &efi_global_variable_guid, > + 0, 0, NULL, false); > + if (ret != EFI_SUCCESS) { > + log_err("delete boot option(%ls) failed\n", varname); > + return ret; > + } > + > + /* update BootOrder if necessary */ > + bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size); > + if (!bootorder) > + return EFI_SUCCESS; > + > + num = size / sizeof(u16); > + if (!efi_search_bootorder(bootorder, num, boot_index, &index)) > + return EFI_SUCCESS; > + > + memmove(&bootorder[index], &bootorder[index + 1], > + (num - index - 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); > + > + return ret; > +} > + > +/** > + * efi_bootmgr_update_media_device_boot_option() - generate the media device boot option > + * > + * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL > + * and generate the bootmenu entries. > + * This function also provide the BOOT#### variable maintenance for > + * the media device entries. > + * - Automatically create the BOOT#### variable for the newly detected device, With this patch applied to origin/next I get: ./lib/efi_loader/efi_bootmgr.c:651:Unexpected indentation. We have doc/api/efi.rst:44: .. kernel-doc:: lib/efi_loader/efi_bootmgr.c So this file goes into documentation. Please, provide a follow up patch to fix 'make htmldocs'. See https://u-boot.readthedocs.io/en/latest/build/documentation.html . Best regards Heinrich > + * this BOOT#### variable is distinguished by the special GUID > + * stored in the EFI_LOAD_OPTION.optional_data > + * - If the device is not attached to the system, the associated BOOT#### variable > + * is automatically deleted. > + * > + * Return: status code > + */ > +efi_status_t efi_bootmgr_update_media_device_boot_option(void) > +{ > + u32 i; > + efi_status_t ret; > + efi_uintn_t count; > + efi_handle_t *volume_handles = NULL; > + struct eficonfig_media_boot_option *opt = NULL; > + > + ret = efi_locate_handle_buffer_int(BY_PROTOCOL, > + &efi_simple_file_system_protocol_guid, > + NULL, &count, > + (efi_handle_t **)&volume_handles); > + if (ret != EFI_SUCCESS) > + return ret; > + > + opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); > + if (!opt) > + goto out; > + > + /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ > + ret = efi_bootmgr_enumerate_boot_option(opt, volume_handles, count); > + if (ret != EFI_SUCCESS) > + goto out; > + > + /* > + * System hardware configuration may vary depending on the user setup. > + * The boot option is automatically added by the bootmenu. > + * If the device is not attached to the system, the boot option needs > + * to be deleted. > + */ > + ret = efi_bootmgr_delete_invalid_boot_option(opt, count); > + if (ret != EFI_SUCCESS) > + goto out; > + > + /* add non-existent boot option */ > + for (i = 0; i < count; i++) { > + u32 boot_index; > + u16 var_name[9]; > + > + if (!opt[i].exist) { > + ret = efi_bootmgr_get_unused_bootoption(var_name, sizeof(var_name), > + &boot_index); > + if (ret != EFI_SUCCESS) > + 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, > + opt[i].size, opt[i].lo, false); > + if (ret != EFI_SUCCESS) > + goto out; > + > + ret = efi_bootmgr_append_bootorder(boot_index); > + if (ret != EFI_SUCCESS) { > + efi_set_variable_int(var_name, &efi_global_variable_guid, > + 0, 0, NULL, false); > + goto out; > + } > + } > + } > + > +out: > + if (opt) { > + for (i = 0; i < count; i++) > + free(opt[i].lo); > + } > + free(opt); > + efi_free_pool(volume_handles); > + > + return ret; > +} > diff --git a/lib/efi_loader/efi_helper.c b/lib/efi_loader/efi_helper.c > index 1f4ab2b419..cdfd16ea77 100644 > --- a/lib/efi_loader/efi_helper.c > +++ b/lib/efi_loader/efi_helper.c > @@ -257,3 +257,28 @@ efi_status_t efi_next_variable_name(efi_uintn_t *size, u16 **buf, efi_guid_t *gu > > return ret; > } > + > +/** > + * efi_search_bootorder() - search the boot option index in BootOrder > + * > + * @bootorder: pointer to the BootOrder variable > + * @num: number of BootOrder entry > + * @target: target boot option index to search > + * @index: pointer to store the index of BootOrder variable > + * Return: true if exists, false otherwise > + */ > +bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index) > +{ > + u32 i; > + > + for (i = 0; i < num; i++) { > + if (target == bootorder[i]) { > + if (index) > + *index = i; > + > + return true; > + } > + } > + > + return false; > +}
On Wed, May 31, 2023 at 10:45:13AM -0700, Raymond Mao wrote: > Rename and move bootorder and bootoption apis from cmd to lib > for re-use between eficonfig and bootmgr > > Signed-off-by: Raymond Mao <raymond.mao@linaro.org> > Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> > --- > Changes in v3 > - Split the patch into moving and renaming functions and > individual patches for each changed functionality > Changes in v6 > - Revert v3 changes in function > efi_bootmgr_update_media_device_boot_option and > efi_bootmgr_delete_invalid_boot_option > > cmd/bootmenu.c | 2 +- > cmd/eficonfig.c | 408 +---------------------------------- > include/efi_config.h | 5 - > include/efi_loader.h | 11 + > lib/efi_loader/efi_bootmgr.c | 375 ++++++++++++++++++++++++++++++++ > lib/efi_loader/efi_helper.c | 25 +++ > 6 files changed, 418 insertions(+), 408 deletions(-) > > diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c > index 6baeedc69f..01daddca7b 100644 > --- a/cmd/bootmenu.c > +++ b/cmd/bootmenu.c > @@ -351,7 +351,7 @@ static struct bootmenu_data *bootmenu_create(int delay) > * UEFI specification requires booting from removal media using > * a architecture-specific default image name such as BOOTAA64.EFI. > */ > - efi_ret = eficonfig_generate_media_device_boot_option(); > + efi_ret = efi_bootmgr_update_media_device_boot_option(); > if (efi_ret != EFI_SUCCESS && efi_ret != EFI_NOT_FOUND) > goto cleanup; > > diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c > index 720f52b48b..82a80306f4 100644 > --- a/cmd/eficonfig.c > +++ b/cmd/eficonfig.c > @@ -1134,43 +1134,6 @@ out: > return ret; > } > > -/** > - * eficonfig_get_unused_bootoption() - get unused "Boot####" index > - * > - * @buf: pointer to the buffer to store boot option variable name > - * @buf_size: buffer size > - * @index: pointer to store the index in the BootOrder variable > - * Return: status code > - */ > -efi_status_t eficonfig_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, > - unsigned int *index) > -{ > - u32 i; > - efi_status_t ret; > - efi_uintn_t size; > - > - if (buf_size < u16_strsize(u"Boot####")) > - return EFI_BUFFER_TOO_SMALL; > - > - for (i = 0; i <= 0xFFFF; i++) { > - size = 0; > - efi_create_indexed_name(buf, buf_size, "Boot", i); > - ret = efi_get_variable_int(buf, &efi_global_variable_guid, > - NULL, &size, NULL, NULL); > - if (ret == EFI_BUFFER_TOO_SMALL) > - continue; > - else > - break; > - } > - > - if (i > 0xFFFF) > - return EFI_OUT_OF_RESOURCES; > - > - *index = i; > - > - return EFI_SUCCESS; > -} > - > /** > * eficonfig_set_boot_option() - set boot option > * > @@ -1208,46 +1171,6 @@ static efi_status_t eficonfig_set_boot_option(u16 *varname, struct efi_device_pa > return ret; > } > > -/** > - * eficonfig_append_bootorder() - append new boot option in BootOrder variable > - * > - * @index: "Boot####" index to append to BootOrder variable > - * Return: status code > - */ > -efi_status_t eficonfig_append_bootorder(u16 index) > -{ > - u16 *bootorder; > - efi_status_t ret; > - u16 *new_bootorder = NULL; > - efi_uintn_t last, size, new_size; > - > - /* 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] = 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(bootorder); > - free(new_bootorder); > - > - return ret; > -} > - > /** > * create_boot_option_entry() - create boot option entry > * > @@ -1619,7 +1542,7 @@ static efi_status_t eficonfig_process_add_boot_option(void *data) > if (!bo) > return EFI_OUT_OF_RESOURCES; > > - ret = eficonfig_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index); > + ret = efi_bootmgr_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index); > if (ret != EFI_SUCCESS) > return ret; > > @@ -1627,7 +1550,7 @@ static efi_status_t eficonfig_process_add_boot_option(void *data) > if (ret != EFI_SUCCESS) > goto out; > > - ret = eficonfig_append_bootorder((u16)bo->boot_index); > + ret = efi_bootmgr_append_bootorder((u16)bo->boot_index); > if (ret != EFI_SUCCESS) > goto out; > > @@ -1656,31 +1579,6 @@ static efi_status_t eficonfig_process_boot_selected(void *data) > return EFI_SUCCESS; > } > > -/** > - * search_bootorder() - search the boot option index in BootOrder > - * > - * @bootorder: pointer to the BootOrder variable > - * @num: number of BootOrder entry > - * @target: target boot option index to search > - * @index: pointer to store the index of BootOrder variable > - * Return: true if exists, false otherwise > - */ > -static bool search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index) > -{ > - u32 i; > - > - for (i = 0; i < num; i++) { > - if (target == bootorder[i]) { > - if (index) > - *index = i; > - > - return true; > - } > - } > - > - return false; > -} > - > /** > * eficonfig_add_boot_selection_entry() - add boot option menu entry > * > @@ -1805,7 +1703,7 @@ static efi_status_t eficonfig_show_boot_selection(unsigned int *selected) > > if (efi_varname_is_load_option(var_name16, &index)) { > /* If the index is included in the BootOrder, skip it */ > - if (search_bootorder(bootorder, num, index, NULL)) > + if (efi_search_bootorder(bootorder, num, index, NULL)) > continue; > > ret = eficonfig_add_boot_selection_entry(efi_menu, index, selected); > @@ -2202,7 +2100,7 @@ static efi_status_t eficonfig_create_change_boot_order_entry(struct efimenu *efi > > if (efi_varname_is_load_option(var_name16, &index)) { > /* If the index is included in the BootOrder, skip it */ > - if (search_bootorder(bootorder, num, index, NULL)) > + if (efi_search_bootorder(bootorder, num, index, NULL)) > continue; > > ret = eficonfig_add_change_boot_order_entry(efi_menu, index, false); > @@ -2304,50 +2202,6 @@ out: > return ret; > } > > -/** > - * delete_boot_option() - delete selected boot option > - * > - * @boot_index: boot option index to delete > - * Return: status code > - */ > -static efi_status_t delete_boot_option(u16 boot_index) > -{ > - u16 *bootorder; > - u16 varname[9]; > - efi_status_t ret; > - unsigned int index; > - efi_uintn_t num, size; > - > - efi_create_indexed_name(varname, sizeof(varname), > - "Boot", boot_index); > - ret = efi_set_variable_int(varname, &efi_global_variable_guid, > - 0, 0, NULL, false); > - if (ret != EFI_SUCCESS) { > - log_err("delete boot option(%ls) failed\n", varname); > - return ret; > - } > - > - /* update BootOrder if necessary */ > - bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size); > - if (!bootorder) > - return EFI_SUCCESS; > - > - num = size / sizeof(u16); > - if (!search_bootorder(bootorder, num, boot_index, &index)) > - return EFI_SUCCESS; > - > - memmove(&bootorder[index], &bootorder[index + 1], > - (num - index - 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); > - > - return ret; > -} > - > /** > * eficonfig_process_delete_boot_option() - handler to delete boot option > * > @@ -2362,7 +2216,7 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) > while (1) { > ret = eficonfig_show_boot_selection(&selected); > if (ret == EFI_SUCCESS) > - ret = delete_boot_option(selected); > + ret = efi_bootmgr_delete_boot_option(selected); > > if (ret != EFI_SUCCESS) > break; > @@ -2374,256 +2228,6 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) > return ret; > } > > -/** > - * eficonfig_enumerate_boot_option() - enumerate the possible bootable media > - * > - * @opt: pointer to the media boot option structure > - * @volume_handles: pointer to the efi handles > - * @count: number of efi handle > - * Return: status code > - */ > -efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt, > - efi_handle_t *volume_handles, efi_status_t count) > -{ > - u32 i; > - struct efi_handler *handler; > - efi_status_t ret = EFI_SUCCESS; > - > - for (i = 0; i < count; i++) { > - u16 *p; > - u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; > - char *optional_data; > - struct efi_load_option lo; > - char buf[BOOTMENU_DEVICE_NAME_MAX]; > - struct efi_device_path *device_path; > - > - ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); > - if (ret != EFI_SUCCESS) > - continue; > - ret = efi_protocol_open(handler, (void **)&device_path, > - efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); > - if (ret != EFI_SUCCESS) > - continue; > - > - ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); > - if (ret != EFI_SUCCESS) > - continue; > - > - p = dev_name; > - utf8_utf16_strncpy(&p, buf, strlen(buf)); > - > - lo.label = dev_name; > - lo.attributes = LOAD_OPTION_ACTIVE; > - lo.file_path = device_path; > - lo.file_path_length = efi_dp_size(device_path) + sizeof(END); > - /* > - * Set the dedicated guid to optional_data, it is used to identify > - * the boot option that automatically generated by the bootmenu. > - * efi_serialize_load_option() expects optional_data is null-terminated > - * utf8 string, so set the "1234567" string to allocate enough space > - * to store guid, instead of realloc the load_option. > - */ > - lo.optional_data = "1234567"; > - opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); > - if (!opt[i].size) { > - ret = EFI_OUT_OF_RESOURCES; > - goto out; > - } > - /* set the guid */ > - optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); > - memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); > - } > - > -out: > - return ret; > -} > - > -/** > - * eficonfig_delete_invalid_boot_option() - delete non-existing boot option > - * > - * @opt: pointer to the media boot option structure > - * @count: number of media boot option structure > - * Return: status code > - */ > -efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, > - efi_status_t count) > -{ > - efi_uintn_t size; > - void *load_option; > - u32 i, list_size = 0; > - struct efi_load_option lo; > - u16 *var_name16 = NULL; > - u16 varname[] = u"Boot####"; > - efi_status_t ret = EFI_SUCCESS; > - u16 *delete_index_list = NULL, *p; > - efi_uintn_t buf_size; > - > - buf_size = 128; > - var_name16 = malloc(buf_size); > - if (!var_name16) > - return EFI_OUT_OF_RESOURCES; > - > - var_name16[0] = 0; > - for (;;) { > - int index; > - efi_guid_t guid; > - efi_uintn_t tmp; > - > - ret = efi_next_variable_name(&buf_size, &var_name16, &guid); > - if (ret == EFI_NOT_FOUND) { > - /* > - * EFI_NOT_FOUND indicates we retrieved all EFI variables. > - * This should be treated as success. > - */ > - ret = EFI_SUCCESS; > - break; > - } > - if (ret != EFI_SUCCESS) > - goto out; > - > - if (!efi_varname_is_load_option(var_name16, &index)) > - continue; > - > - efi_create_indexed_name(varname, sizeof(varname), "Boot", index); > - load_option = efi_get_var(varname, &efi_global_variable_guid, &size); > - if (!load_option) > - continue; > - > - tmp = size; > - ret = efi_deserialize_load_option(&lo, load_option, &size); > - if (ret != EFI_SUCCESS) > - goto next; > - > - if (size >= sizeof(efi_guid_bootmenu_auto_generated) && > - !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) { > - for (i = 0; i < count; i++) { > - if (opt[i].size == tmp && > - memcmp(opt[i].lo, load_option, tmp) == 0) { > - opt[i].exist = true; > - break; > - } > - } > - > - /* > - * The entire list of variables must be retrieved by > - * efi_get_next_variable_name_int() before deleting the invalid > - * boot option, just save the index here. > - */ > - if (i == count) { > - p = realloc(delete_index_list, sizeof(u32) * > - (list_size + 1)); > - if (!p) { > - ret = EFI_OUT_OF_RESOURCES; > - goto out; > - } > - delete_index_list = p; > - delete_index_list[list_size++] = index; > - } > - } > -next: > - free(load_option); > - } > - > - /* delete all invalid boot options */ > - for (i = 0; i < list_size; i++) { > - ret = delete_boot_option(delete_index_list[i]); > - if (ret != EFI_SUCCESS) > - goto out; > - } > - > -out: > - free(var_name16); > - free(delete_index_list); > - > - return ret; > -} > - > -/** > - * eficonfig_generate_media_device_boot_option() - generate the media device boot option > - * > - * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL > - * and generate the bootmenu entries. > - * This function also provide the BOOT#### variable maintenance for > - * the media device entries. > - * - Automatically create the BOOT#### variable for the newly detected device, > - * this BOOT#### variable is distinguished by the special GUID > - * stored in the EFI_LOAD_OPTION.optional_data > - * - If the device is not attached to the system, the associated BOOT#### variable > - * is automatically deleted. > - * > - * Return: status code > - */ > -efi_status_t eficonfig_generate_media_device_boot_option(void) > -{ > - u32 i; > - efi_status_t ret; > - efi_uintn_t count; > - efi_handle_t *volume_handles = NULL; > - struct eficonfig_media_boot_option *opt = NULL; > - > - ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid, > - NULL, &count, (efi_handle_t **)&volume_handles); > - if (ret != EFI_SUCCESS) > - return ret; > - > - opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); > - if (!opt) > - goto out; > - > - /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ > - ret = eficonfig_enumerate_boot_option(opt, volume_handles, count); > - if (ret != EFI_SUCCESS) > - goto out; > - > - /* > - * System hardware configuration may vary depending on the user setup. > - * The boot option is automatically added by the bootmenu. > - * If the device is not attached to the system, the boot option needs > - * to be deleted. > - */ > - ret = eficonfig_delete_invalid_boot_option(opt, count); > - if (ret != EFI_SUCCESS) > - goto out; > - > - /* add non-existent boot option */ > - for (i = 0; i < count; i++) { > - u32 boot_index; > - u16 var_name[9]; > - > - if (!opt[i].exist) { > - ret = eficonfig_get_unused_bootoption(var_name, sizeof(var_name), > - &boot_index); > - if (ret != EFI_SUCCESS) > - 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, > - opt[i].size, opt[i].lo, false); > - if (ret != EFI_SUCCESS) > - goto out; > - > - ret = eficonfig_append_bootorder(boot_index); > - if (ret != EFI_SUCCESS) { > - efi_set_variable_int(var_name, &efi_global_variable_guid, > - 0, 0, NULL, false); > - goto out; > - } > - } > - } > - > -out: > - if (opt) { > - for (i = 0; i < count; i++) > - free(opt[i].lo); > - } > - free(opt); > - efi_free_pool(volume_handles); > - > - return ret; > -} > - > /** > * eficonfig_init() - do required initialization for eficonfig command > * > @@ -2709,7 +2313,7 @@ static int do_eficonfig(struct cmd_tbl *cmdtp, int flag, int argc, char *const a > if (ret != EFI_SUCCESS) > return CMD_RET_FAILURE; > > - ret = eficonfig_generate_media_device_boot_option(); > + ret = efi_bootmgr_update_media_device_boot_option(); > if (ret != EFI_SUCCESS && ret != EFI_NOT_FOUND) > return ret; > > diff --git a/include/efi_config.h b/include/efi_config.h > index 01ce9b2b06..d7c1601137 100644 > --- a/include/efi_config.h > +++ b/include/efi_config.h > @@ -105,11 +105,6 @@ efi_status_t eficonfig_process_common(struct efimenu *efi_menu, > void (*item_data_print)(void *), > char *(*item_choice)(void *)); > efi_status_t eficonfig_process_select_file(void *data); > -efi_status_t eficonfig_get_unused_bootoption(u16 *buf, > - efi_uintn_t buf_size, u32 *index); > -efi_status_t eficonfig_append_bootorder(u16 index); > -efi_status_t eficonfig_generate_media_device_boot_option(void); > - > efi_status_t eficonfig_append_menu_entry(struct efimenu *efi_menu, > char *title, eficonfig_entry_func func, > void *data); > diff --git a/include/efi_loader.h b/include/efi_loader.h > index 1542b4b625..31ca1f5d1d 100644 > --- a/include/efi_loader.h > +++ b/include/efi_loader.h > @@ -516,6 +516,17 @@ extern struct list_head efi_register_notify_events; > int efi_init_early(void); > /* Initialize efi execution environment */ > efi_status_t efi_init_obj_list(void); > +/* Append new boot option in BootOrder variable */ > +efi_status_t efi_bootmgr_append_bootorder(u16 index); > +/* Get unused "Boot####" index */ > +efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, > + efi_uintn_t buf_size, u32 *index); > +/* Generate the media device boot option */ > +efi_status_t efi_bootmgr_update_media_device_boot_option(void); > +/* Delete selected boot option */ > +efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index); > +/* search the boot option index in BootOrder */ > +bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index); > /* Set up console modes */ > void efi_setup_console_size(void); > /* Install device tree */ > diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c > index 4b24b41047..48cd5f0636 100644 > --- a/lib/efi_loader/efi_bootmgr.c > +++ b/lib/efi_loader/efi_bootmgr.c > @@ -347,3 +347,378 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options) > error: > return ret; > } > + > +/** > + * efi_bootmgr_enumerate_boot_option() - enumerate the possible bootable media > + * > + * @opt: pointer to the media boot option structure > + * @volume_handles: pointer to the efi handles > + * @count: number of efi handle > + * Return: status code > + */ > +static efi_status_t efi_bootmgr_enumerate_boot_option(struct eficonfig_media_boot_option *opt, > + efi_handle_t *volume_handles, > + efi_status_t count) > +{ > + u32 i; > + struct efi_handler *handler; > + efi_status_t ret = EFI_SUCCESS; > + > + for (i = 0; i < count; i++) { > + u16 *p; > + u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; > + char *optional_data; > + struct efi_load_option lo; > + char buf[BOOTMENU_DEVICE_NAME_MAX]; > + struct efi_device_path *device_path; > + > + ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); > + if (ret != EFI_SUCCESS) > + continue; > + ret = efi_protocol_open(handler, (void **)&device_path, > + efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); > + if (ret != EFI_SUCCESS) > + continue; > + > + ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); > + if (ret != EFI_SUCCESS) > + continue; > + > + p = dev_name; > + utf8_utf16_strncpy(&p, buf, strlen(buf)); > + > + lo.label = dev_name; > + lo.attributes = LOAD_OPTION_ACTIVE; > + lo.file_path = device_path; > + lo.file_path_length = efi_dp_size(device_path) + sizeof(END); > + /* > + * Set the dedicated guid to optional_data, it is used to identify > + * the boot option that automatically generated by the bootmenu. > + * efi_serialize_load_option() expects optional_data is null-terminated > + * utf8 string, so set the "1234567" string to allocate enough space > + * to store guid, instead of realloc the load_option. > + */ > + lo.optional_data = "1234567"; > + opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); > + if (!opt[i].size) { > + ret = EFI_OUT_OF_RESOURCES; > + goto out; > + } > + /* set the guid */ > + optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); > + memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); > + } > + > +out: > + return ret; > +} > + > +/** > + * efi_bootmgr_delete_invalid_boot_option() - delete non-existing boot option > + * > + * @opt: pointer to the media boot option structure > + * @count: number of media boot option structure > + * Return: status code > + */ > +static efi_status_t efi_bootmgr_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, > + efi_status_t count) > +{ > + efi_uintn_t size; > + void *load_option; > + u32 i, list_size = 0; > + struct efi_load_option lo; > + u16 *var_name16 = NULL; > + u16 varname[] = u"Boot####"; > + efi_status_t ret = EFI_SUCCESS; > + u16 *delete_index_list = NULL, *p; > + efi_uintn_t buf_size; > + > + buf_size = 128; > + var_name16 = malloc(buf_size); > + if (!var_name16) > + return EFI_OUT_OF_RESOURCES; > + > + var_name16[0] = 0; > + for (;;) { > + int index; > + efi_guid_t guid; > + efi_uintn_t tmp; > + > + ret = efi_next_variable_name(&buf_size, &var_name16, &guid); > + if (ret == EFI_NOT_FOUND) { > + /* > + * EFI_NOT_FOUND indicates we retrieved all EFI variables. > + * This should be treated as success. > + */ > + ret = EFI_SUCCESS; > + break; > + } > + > + if (ret != EFI_SUCCESS) > + goto out; > + > + if (!efi_varname_is_load_option(var_name16, &index)) > + continue; > + > + efi_create_indexed_name(varname, sizeof(varname), "Boot", index); > + load_option = efi_get_var(varname, &efi_global_variable_guid, &size); > + if (!load_option) > + continue; > + > + tmp = size; > + ret = efi_deserialize_load_option(&lo, load_option, &size); > + if (ret != EFI_SUCCESS) > + goto next; > + > + if (size >= sizeof(efi_guid_bootmenu_auto_generated) && > + !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) { > + for (i = 0; i < count; i++) { > + if (opt[i].size == tmp && > + memcmp(opt[i].lo, load_option, tmp) == 0) { > + opt[i].exist = true; > + break; > + } > + } > + > + /* > + * The entire list of variables must be retrieved by > + * efi_get_next_variable_name_int() before deleting the invalid > + * boot option, just save the index here. > + */ > + if (i == count) { > + p = realloc(delete_index_list, sizeof(u32) * > + (list_size + 1)); > + if (!p) { > + ret = EFI_OUT_OF_RESOURCES; > + goto out; > + } > + delete_index_list = p; > + delete_index_list[list_size++] = index; > + } > + } > +next: > + free(load_option); > + } > + > + /* delete all invalid boot options */ > + for (i = 0; i < list_size; i++) { > + ret = efi_bootmgr_delete_boot_option(delete_index_list[i]); > + if (ret != EFI_SUCCESS) > + goto out; > + } > + > +out: > + free(var_name16); > + free(delete_index_list); > + > + return ret; > +} > + > +/** > + * efi_bootmgr_get_unused_bootoption() - get unused "Boot####" index > + * > + * @buf: pointer to the buffer to store boot option variable name > + * @buf_size: buffer size > + * @index: pointer to store the index in the BootOrder variable > + * Return: status code > + */ > +efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, > + unsigned int *index) > +{ > + u32 i; > + efi_status_t ret; > + efi_uintn_t size; > + > + if (buf_size < u16_strsize(u"Boot####")) > + return EFI_BUFFER_TOO_SMALL; > + > + for (i = 0; i <= 0xFFFF; i++) { > + size = 0; > + efi_create_indexed_name(buf, buf_size, "Boot", i); > + ret = efi_get_variable_int(buf, &efi_global_variable_guid, > + NULL, &size, NULL, NULL); > + if (ret == EFI_BUFFER_TOO_SMALL) > + continue; > + else > + break; > + } > + > + if (i > 0xFFFF) > + return EFI_OUT_OF_RESOURCES; > + > + *index = i; > + > + return EFI_SUCCESS; > +} > + > +/** > + * efi_bootmgr_append_bootorder() - append new boot option in BootOrder variable > + * > + * @index: "Boot####" index to append to BootOrder variable > + * Return: status code > + */ > +efi_status_t efi_bootmgr_append_bootorder(u16 index) > +{ > + u16 *bootorder; > + efi_status_t ret; > + u16 *new_bootorder = NULL; > + efi_uintn_t last, size, new_size; > + > + /* 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] = 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(bootorder); > + free(new_bootorder); > + > + return ret; > +} > + > +/** > + * efi_bootmgr_delete_boot_option() - delete selected boot option > + * > + * @boot_index: boot option index to delete > + * Return: status code > + */ > +efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index) > +{ > + u16 *bootorder; > + u16 varname[9]; > + efi_status_t ret; > + unsigned int index; > + efi_uintn_t num, size; > + > + efi_create_indexed_name(varname, sizeof(varname), > + "Boot", boot_index); > + ret = efi_set_variable_int(varname, &efi_global_variable_guid, > + 0, 0, NULL, false); > + if (ret != EFI_SUCCESS) { > + log_err("delete boot option(%ls) failed\n", varname); > + return ret; > + } > + > + /* update BootOrder if necessary */ > + bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size); > + if (!bootorder) > + return EFI_SUCCESS; > + > + num = size / sizeof(u16); > + if (!efi_search_bootorder(bootorder, num, boot_index, &index)) > + return EFI_SUCCESS; > + > + memmove(&bootorder[index], &bootorder[index + 1], > + (num - index - 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); > + > + return ret; > +} > + > +/** > + * efi_bootmgr_update_media_device_boot_option() - generate the media device boot option > + * > + * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL > + * and generate the bootmenu entries. > + * This function also provide the BOOT#### variable maintenance for > + * the media device entries. > + * - Automatically create the BOOT#### variable for the newly detected device, > + * this BOOT#### variable is distinguished by the special GUID > + * stored in the EFI_LOAD_OPTION.optional_data > + * - If the device is not attached to the system, the associated BOOT#### variable > + * is automatically deleted. > + * > + * Return: status code > + */ > +efi_status_t efi_bootmgr_update_media_device_boot_option(void) > +{ > + u32 i; > + efi_status_t ret; > + efi_uintn_t count; > + efi_handle_t *volume_handles = NULL; > + struct eficonfig_media_boot_option *opt = NULL; > + > + ret = efi_locate_handle_buffer_int(BY_PROTOCOL, > + &efi_simple_file_system_protocol_guid, > + NULL, &count, > + (efi_handle_t **)&volume_handles); > + if (ret != EFI_SUCCESS) > + return ret; > + > + opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); > + if (!opt) > + goto out; > + > + /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ > + ret = efi_bootmgr_enumerate_boot_option(opt, volume_handles, count); > + if (ret != EFI_SUCCESS) > + goto out; > + > + /* > + * System hardware configuration may vary depending on the user setup. > + * The boot option is automatically added by the bootmenu. > + * If the device is not attached to the system, the boot option needs > + * to be deleted. > + */ > + ret = efi_bootmgr_delete_invalid_boot_option(opt, count); > + if (ret != EFI_SUCCESS) > + goto out; > + > + /* add non-existent boot option */ > + for (i = 0; i < count; i++) { > + u32 boot_index; > + u16 var_name[9]; > + > + if (!opt[i].exist) { > + ret = efi_bootmgr_get_unused_bootoption(var_name, sizeof(var_name), > + &boot_index); > + if (ret != EFI_SUCCESS) > + 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, > + opt[i].size, opt[i].lo, false); > + if (ret != EFI_SUCCESS) > + goto out; > + > + ret = efi_bootmgr_append_bootorder(boot_index); > + if (ret != EFI_SUCCESS) { > + efi_set_variable_int(var_name, &efi_global_variable_guid, > + 0, 0, NULL, false); > + goto out; > + } > + } > + } > + > +out: > + if (opt) { > + for (i = 0; i < count; i++) > + free(opt[i].lo); > + } > + free(opt); > + efi_free_pool(volume_handles); > + > + return ret; > +} > diff --git a/lib/efi_loader/efi_helper.c b/lib/efi_loader/efi_helper.c > index 1f4ab2b419..cdfd16ea77 100644 > --- a/lib/efi_loader/efi_helper.c > +++ b/lib/efi_loader/efi_helper.c > @@ -257,3 +257,28 @@ efi_status_t efi_next_variable_name(efi_uintn_t *size, u16 **buf, efi_guid_t *gu > > return ret; > } > + > +/** > + * efi_search_bootorder() - search the boot option index in BootOrder > + * > + * @bootorder: pointer to the BootOrder variable > + * @num: number of BootOrder entry > + * @target: target boot option index to search > + * @index: pointer to store the index of BootOrder variable > + * Return: true if exists, false otherwise > + */ > +bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index) > +{ > + u32 i; > + > + for (i = 0; i < num; i++) { > + if (target == bootorder[i]) { > + if (index) > + *index = i; > + > + return true; > + } > + } > + > + return false; > +} > -- > 2.25.1 > Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Hi Heinrich, > With this patch applied to origin/next I get: > > ./lib/efi_loader/efi_bootmgr.c:651:Unexpected indentation. > > We have > doc/api/efi.rst:44: > .. kernel-doc:: lib/efi_loader/efi_bootmgr.c > > So this file goes into documentation. > > Please, provide a follow up patch to fix 'make htmldocs'. > See https://u-boot.readthedocs.io/en/latest/build/documentation.html . I think it is better to put this fix into patch 'v8 1/4' if you agree, as this 'Unexpected indentation' was introduced when function '###_media_device_boot_option' was moved from eficonfig to efi_bootmgr Regards, Raymond
Am 6. Juni 2023 16:39:47 MESZ schrieb Raymond Mao <raymond.mao@linaro.org>: >Hi Heinrich, > >> With this patch applied to origin/next I get: >> >> ./lib/efi_loader/efi_bootmgr.c:651:Unexpected indentation. >> >> We have >> doc/api/efi.rst:44: >> .. kernel-doc:: lib/efi_loader/efi_bootmgr.c >> >> So this file goes into documentation. >> >> Please, provide a follow up patch to fix 'make htmldocs'. >> See https://u-boot.readthedocs.io/en/latest/build/documentation.html . >I think it is better to put this fix into patch 'v8 1/4' if you agree, >as this 'Unexpected indentation' was introduced when function >'###_media_device_boot_option' was moved from eficonfig to efi_bootmgr > >Regards, >Raymond Ok with me. Please, mention it in the commit message. Best regards Heinrich
diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c index 6baeedc69f..01daddca7b 100644 --- a/cmd/bootmenu.c +++ b/cmd/bootmenu.c @@ -351,7 +351,7 @@ static struct bootmenu_data *bootmenu_create(int delay) * UEFI specification requires booting from removal media using * a architecture-specific default image name such as BOOTAA64.EFI. */ - efi_ret = eficonfig_generate_media_device_boot_option(); + efi_ret = efi_bootmgr_update_media_device_boot_option(); if (efi_ret != EFI_SUCCESS && efi_ret != EFI_NOT_FOUND) goto cleanup; diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c index 720f52b48b..82a80306f4 100644 --- a/cmd/eficonfig.c +++ b/cmd/eficonfig.c @@ -1134,43 +1134,6 @@ out: return ret; } -/** - * eficonfig_get_unused_bootoption() - get unused "Boot####" index - * - * @buf: pointer to the buffer to store boot option variable name - * @buf_size: buffer size - * @index: pointer to store the index in the BootOrder variable - * Return: status code - */ -efi_status_t eficonfig_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, - unsigned int *index) -{ - u32 i; - efi_status_t ret; - efi_uintn_t size; - - if (buf_size < u16_strsize(u"Boot####")) - return EFI_BUFFER_TOO_SMALL; - - for (i = 0; i <= 0xFFFF; i++) { - size = 0; - efi_create_indexed_name(buf, buf_size, "Boot", i); - ret = efi_get_variable_int(buf, &efi_global_variable_guid, - NULL, &size, NULL, NULL); - if (ret == EFI_BUFFER_TOO_SMALL) - continue; - else - break; - } - - if (i > 0xFFFF) - return EFI_OUT_OF_RESOURCES; - - *index = i; - - return EFI_SUCCESS; -} - /** * eficonfig_set_boot_option() - set boot option * @@ -1208,46 +1171,6 @@ static efi_status_t eficonfig_set_boot_option(u16 *varname, struct efi_device_pa return ret; } -/** - * eficonfig_append_bootorder() - append new boot option in BootOrder variable - * - * @index: "Boot####" index to append to BootOrder variable - * Return: status code - */ -efi_status_t eficonfig_append_bootorder(u16 index) -{ - u16 *bootorder; - efi_status_t ret; - u16 *new_bootorder = NULL; - efi_uintn_t last, size, new_size; - - /* 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] = 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(bootorder); - free(new_bootorder); - - return ret; -} - /** * create_boot_option_entry() - create boot option entry * @@ -1619,7 +1542,7 @@ static efi_status_t eficonfig_process_add_boot_option(void *data) if (!bo) return EFI_OUT_OF_RESOURCES; - ret = eficonfig_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index); + ret = efi_bootmgr_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index); if (ret != EFI_SUCCESS) return ret; @@ -1627,7 +1550,7 @@ static efi_status_t eficonfig_process_add_boot_option(void *data) if (ret != EFI_SUCCESS) goto out; - ret = eficonfig_append_bootorder((u16)bo->boot_index); + ret = efi_bootmgr_append_bootorder((u16)bo->boot_index); if (ret != EFI_SUCCESS) goto out; @@ -1656,31 +1579,6 @@ static efi_status_t eficonfig_process_boot_selected(void *data) return EFI_SUCCESS; } -/** - * search_bootorder() - search the boot option index in BootOrder - * - * @bootorder: pointer to the BootOrder variable - * @num: number of BootOrder entry - * @target: target boot option index to search - * @index: pointer to store the index of BootOrder variable - * Return: true if exists, false otherwise - */ -static bool search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index) -{ - u32 i; - - for (i = 0; i < num; i++) { - if (target == bootorder[i]) { - if (index) - *index = i; - - return true; - } - } - - return false; -} - /** * eficonfig_add_boot_selection_entry() - add boot option menu entry * @@ -1805,7 +1703,7 @@ static efi_status_t eficonfig_show_boot_selection(unsigned int *selected) if (efi_varname_is_load_option(var_name16, &index)) { /* If the index is included in the BootOrder, skip it */ - if (search_bootorder(bootorder, num, index, NULL)) + if (efi_search_bootorder(bootorder, num, index, NULL)) continue; ret = eficonfig_add_boot_selection_entry(efi_menu, index, selected); @@ -2202,7 +2100,7 @@ static efi_status_t eficonfig_create_change_boot_order_entry(struct efimenu *efi if (efi_varname_is_load_option(var_name16, &index)) { /* If the index is included in the BootOrder, skip it */ - if (search_bootorder(bootorder, num, index, NULL)) + if (efi_search_bootorder(bootorder, num, index, NULL)) continue; ret = eficonfig_add_change_boot_order_entry(efi_menu, index, false); @@ -2304,50 +2202,6 @@ out: return ret; } -/** - * delete_boot_option() - delete selected boot option - * - * @boot_index: boot option index to delete - * Return: status code - */ -static efi_status_t delete_boot_option(u16 boot_index) -{ - u16 *bootorder; - u16 varname[9]; - efi_status_t ret; - unsigned int index; - efi_uintn_t num, size; - - efi_create_indexed_name(varname, sizeof(varname), - "Boot", boot_index); - ret = efi_set_variable_int(varname, &efi_global_variable_guid, - 0, 0, NULL, false); - if (ret != EFI_SUCCESS) { - log_err("delete boot option(%ls) failed\n", varname); - return ret; - } - - /* update BootOrder if necessary */ - bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size); - if (!bootorder) - return EFI_SUCCESS; - - num = size / sizeof(u16); - if (!search_bootorder(bootorder, num, boot_index, &index)) - return EFI_SUCCESS; - - memmove(&bootorder[index], &bootorder[index + 1], - (num - index - 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); - - return ret; -} - /** * eficonfig_process_delete_boot_option() - handler to delete boot option * @@ -2362,7 +2216,7 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) while (1) { ret = eficonfig_show_boot_selection(&selected); if (ret == EFI_SUCCESS) - ret = delete_boot_option(selected); + ret = efi_bootmgr_delete_boot_option(selected); if (ret != EFI_SUCCESS) break; @@ -2374,256 +2228,6 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) return ret; } -/** - * eficonfig_enumerate_boot_option() - enumerate the possible bootable media - * - * @opt: pointer to the media boot option structure - * @volume_handles: pointer to the efi handles - * @count: number of efi handle - * Return: status code - */ -efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt, - efi_handle_t *volume_handles, efi_status_t count) -{ - u32 i; - struct efi_handler *handler; - efi_status_t ret = EFI_SUCCESS; - - for (i = 0; i < count; i++) { - u16 *p; - u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; - char *optional_data; - struct efi_load_option lo; - char buf[BOOTMENU_DEVICE_NAME_MAX]; - struct efi_device_path *device_path; - - ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); - if (ret != EFI_SUCCESS) - continue; - ret = efi_protocol_open(handler, (void **)&device_path, - efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); - if (ret != EFI_SUCCESS) - continue; - - ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); - if (ret != EFI_SUCCESS) - continue; - - p = dev_name; - utf8_utf16_strncpy(&p, buf, strlen(buf)); - - lo.label = dev_name; - lo.attributes = LOAD_OPTION_ACTIVE; - lo.file_path = device_path; - lo.file_path_length = efi_dp_size(device_path) + sizeof(END); - /* - * Set the dedicated guid to optional_data, it is used to identify - * the boot option that automatically generated by the bootmenu. - * efi_serialize_load_option() expects optional_data is null-terminated - * utf8 string, so set the "1234567" string to allocate enough space - * to store guid, instead of realloc the load_option. - */ - lo.optional_data = "1234567"; - opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); - if (!opt[i].size) { - ret = EFI_OUT_OF_RESOURCES; - goto out; - } - /* set the guid */ - optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); - memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); - } - -out: - return ret; -} - -/** - * eficonfig_delete_invalid_boot_option() - delete non-existing boot option - * - * @opt: pointer to the media boot option structure - * @count: number of media boot option structure - * Return: status code - */ -efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, - efi_status_t count) -{ - efi_uintn_t size; - void *load_option; - u32 i, list_size = 0; - struct efi_load_option lo; - u16 *var_name16 = NULL; - u16 varname[] = u"Boot####"; - efi_status_t ret = EFI_SUCCESS; - u16 *delete_index_list = NULL, *p; - efi_uintn_t buf_size; - - buf_size = 128; - var_name16 = malloc(buf_size); - if (!var_name16) - return EFI_OUT_OF_RESOURCES; - - var_name16[0] = 0; - for (;;) { - int index; - efi_guid_t guid; - efi_uintn_t tmp; - - ret = efi_next_variable_name(&buf_size, &var_name16, &guid); - if (ret == EFI_NOT_FOUND) { - /* - * EFI_NOT_FOUND indicates we retrieved all EFI variables. - * This should be treated as success. - */ - ret = EFI_SUCCESS; - break; - } - if (ret != EFI_SUCCESS) - goto out; - - if (!efi_varname_is_load_option(var_name16, &index)) - continue; - - efi_create_indexed_name(varname, sizeof(varname), "Boot", index); - load_option = efi_get_var(varname, &efi_global_variable_guid, &size); - if (!load_option) - continue; - - tmp = size; - ret = efi_deserialize_load_option(&lo, load_option, &size); - if (ret != EFI_SUCCESS) - goto next; - - if (size >= sizeof(efi_guid_bootmenu_auto_generated) && - !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) { - for (i = 0; i < count; i++) { - if (opt[i].size == tmp && - memcmp(opt[i].lo, load_option, tmp) == 0) { - opt[i].exist = true; - break; - } - } - - /* - * The entire list of variables must be retrieved by - * efi_get_next_variable_name_int() before deleting the invalid - * boot option, just save the index here. - */ - if (i == count) { - p = realloc(delete_index_list, sizeof(u32) * - (list_size + 1)); - if (!p) { - ret = EFI_OUT_OF_RESOURCES; - goto out; - } - delete_index_list = p; - delete_index_list[list_size++] = index; - } - } -next: - free(load_option); - } - - /* delete all invalid boot options */ - for (i = 0; i < list_size; i++) { - ret = delete_boot_option(delete_index_list[i]); - if (ret != EFI_SUCCESS) - goto out; - } - -out: - free(var_name16); - free(delete_index_list); - - return ret; -} - -/** - * eficonfig_generate_media_device_boot_option() - generate the media device boot option - * - * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL - * and generate the bootmenu entries. - * This function also provide the BOOT#### variable maintenance for - * the media device entries. - * - Automatically create the BOOT#### variable for the newly detected device, - * this BOOT#### variable is distinguished by the special GUID - * stored in the EFI_LOAD_OPTION.optional_data - * - If the device is not attached to the system, the associated BOOT#### variable - * is automatically deleted. - * - * Return: status code - */ -efi_status_t eficonfig_generate_media_device_boot_option(void) -{ - u32 i; - efi_status_t ret; - efi_uintn_t count; - efi_handle_t *volume_handles = NULL; - struct eficonfig_media_boot_option *opt = NULL; - - ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid, - NULL, &count, (efi_handle_t **)&volume_handles); - if (ret != EFI_SUCCESS) - return ret; - - opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); - if (!opt) - goto out; - - /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ - ret = eficonfig_enumerate_boot_option(opt, volume_handles, count); - if (ret != EFI_SUCCESS) - goto out; - - /* - * System hardware configuration may vary depending on the user setup. - * The boot option is automatically added by the bootmenu. - * If the device is not attached to the system, the boot option needs - * to be deleted. - */ - ret = eficonfig_delete_invalid_boot_option(opt, count); - if (ret != EFI_SUCCESS) - goto out; - - /* add non-existent boot option */ - for (i = 0; i < count; i++) { - u32 boot_index; - u16 var_name[9]; - - if (!opt[i].exist) { - ret = eficonfig_get_unused_bootoption(var_name, sizeof(var_name), - &boot_index); - if (ret != EFI_SUCCESS) - 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, - opt[i].size, opt[i].lo, false); - if (ret != EFI_SUCCESS) - goto out; - - ret = eficonfig_append_bootorder(boot_index); - if (ret != EFI_SUCCESS) { - efi_set_variable_int(var_name, &efi_global_variable_guid, - 0, 0, NULL, false); - goto out; - } - } - } - -out: - if (opt) { - for (i = 0; i < count; i++) - free(opt[i].lo); - } - free(opt); - efi_free_pool(volume_handles); - - return ret; -} - /** * eficonfig_init() - do required initialization for eficonfig command * @@ -2709,7 +2313,7 @@ static int do_eficonfig(struct cmd_tbl *cmdtp, int flag, int argc, char *const a if (ret != EFI_SUCCESS) return CMD_RET_FAILURE; - ret = eficonfig_generate_media_device_boot_option(); + ret = efi_bootmgr_update_media_device_boot_option(); if (ret != EFI_SUCCESS && ret != EFI_NOT_FOUND) return ret; diff --git a/include/efi_config.h b/include/efi_config.h index 01ce9b2b06..d7c1601137 100644 --- a/include/efi_config.h +++ b/include/efi_config.h @@ -105,11 +105,6 @@ efi_status_t eficonfig_process_common(struct efimenu *efi_menu, void (*item_data_print)(void *), char *(*item_choice)(void *)); efi_status_t eficonfig_process_select_file(void *data); -efi_status_t eficonfig_get_unused_bootoption(u16 *buf, - efi_uintn_t buf_size, u32 *index); -efi_status_t eficonfig_append_bootorder(u16 index); -efi_status_t eficonfig_generate_media_device_boot_option(void); - efi_status_t eficonfig_append_menu_entry(struct efimenu *efi_menu, char *title, eficonfig_entry_func func, void *data); diff --git a/include/efi_loader.h b/include/efi_loader.h index 1542b4b625..31ca1f5d1d 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -516,6 +516,17 @@ extern struct list_head efi_register_notify_events; int efi_init_early(void); /* Initialize efi execution environment */ efi_status_t efi_init_obj_list(void); +/* Append new boot option in BootOrder variable */ +efi_status_t efi_bootmgr_append_bootorder(u16 index); +/* Get unused "Boot####" index */ +efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, + efi_uintn_t buf_size, u32 *index); +/* Generate the media device boot option */ +efi_status_t efi_bootmgr_update_media_device_boot_option(void); +/* Delete selected boot option */ +efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index); +/* search the boot option index in BootOrder */ +bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index); /* Set up console modes */ void efi_setup_console_size(void); /* Install device tree */ diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c index 4b24b41047..48cd5f0636 100644 --- a/lib/efi_loader/efi_bootmgr.c +++ b/lib/efi_loader/efi_bootmgr.c @@ -347,3 +347,378 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options) error: return ret; } + +/** + * efi_bootmgr_enumerate_boot_option() - enumerate the possible bootable media + * + * @opt: pointer to the media boot option structure + * @volume_handles: pointer to the efi handles + * @count: number of efi handle + * Return: status code + */ +static efi_status_t efi_bootmgr_enumerate_boot_option(struct eficonfig_media_boot_option *opt, + efi_handle_t *volume_handles, + efi_status_t count) +{ + u32 i; + struct efi_handler *handler; + efi_status_t ret = EFI_SUCCESS; + + for (i = 0; i < count; i++) { + u16 *p; + u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; + char *optional_data; + struct efi_load_option lo; + char buf[BOOTMENU_DEVICE_NAME_MAX]; + struct efi_device_path *device_path; + + ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); + if (ret != EFI_SUCCESS) + continue; + ret = efi_protocol_open(handler, (void **)&device_path, + efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); + if (ret != EFI_SUCCESS) + continue; + + ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); + if (ret != EFI_SUCCESS) + continue; + + p = dev_name; + utf8_utf16_strncpy(&p, buf, strlen(buf)); + + lo.label = dev_name; + lo.attributes = LOAD_OPTION_ACTIVE; + lo.file_path = device_path; + lo.file_path_length = efi_dp_size(device_path) + sizeof(END); + /* + * Set the dedicated guid to optional_data, it is used to identify + * the boot option that automatically generated by the bootmenu. + * efi_serialize_load_option() expects optional_data is null-terminated + * utf8 string, so set the "1234567" string to allocate enough space + * to store guid, instead of realloc the load_option. + */ + lo.optional_data = "1234567"; + opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); + if (!opt[i].size) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + /* set the guid */ + optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); + memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); + } + +out: + return ret; +} + +/** + * efi_bootmgr_delete_invalid_boot_option() - delete non-existing boot option + * + * @opt: pointer to the media boot option structure + * @count: number of media boot option structure + * Return: status code + */ +static efi_status_t efi_bootmgr_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, + efi_status_t count) +{ + efi_uintn_t size; + void *load_option; + u32 i, list_size = 0; + struct efi_load_option lo; + u16 *var_name16 = NULL; + u16 varname[] = u"Boot####"; + efi_status_t ret = EFI_SUCCESS; + u16 *delete_index_list = NULL, *p; + efi_uintn_t buf_size; + + buf_size = 128; + var_name16 = malloc(buf_size); + if (!var_name16) + return EFI_OUT_OF_RESOURCES; + + var_name16[0] = 0; + for (;;) { + int index; + efi_guid_t guid; + efi_uintn_t tmp; + + ret = efi_next_variable_name(&buf_size, &var_name16, &guid); + if (ret == EFI_NOT_FOUND) { + /* + * EFI_NOT_FOUND indicates we retrieved all EFI variables. + * This should be treated as success. + */ + ret = EFI_SUCCESS; + break; + } + + if (ret != EFI_SUCCESS) + goto out; + + if (!efi_varname_is_load_option(var_name16, &index)) + continue; + + efi_create_indexed_name(varname, sizeof(varname), "Boot", index); + load_option = efi_get_var(varname, &efi_global_variable_guid, &size); + if (!load_option) + continue; + + tmp = size; + ret = efi_deserialize_load_option(&lo, load_option, &size); + if (ret != EFI_SUCCESS) + goto next; + + if (size >= sizeof(efi_guid_bootmenu_auto_generated) && + !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) { + for (i = 0; i < count; i++) { + if (opt[i].size == tmp && + memcmp(opt[i].lo, load_option, tmp) == 0) { + opt[i].exist = true; + break; + } + } + + /* + * The entire list of variables must be retrieved by + * efi_get_next_variable_name_int() before deleting the invalid + * boot option, just save the index here. + */ + if (i == count) { + p = realloc(delete_index_list, sizeof(u32) * + (list_size + 1)); + if (!p) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + delete_index_list = p; + delete_index_list[list_size++] = index; + } + } +next: + free(load_option); + } + + /* delete all invalid boot options */ + for (i = 0; i < list_size; i++) { + ret = efi_bootmgr_delete_boot_option(delete_index_list[i]); + if (ret != EFI_SUCCESS) + goto out; + } + +out: + free(var_name16); + free(delete_index_list); + + return ret; +} + +/** + * efi_bootmgr_get_unused_bootoption() - get unused "Boot####" index + * + * @buf: pointer to the buffer to store boot option variable name + * @buf_size: buffer size + * @index: pointer to store the index in the BootOrder variable + * Return: status code + */ +efi_status_t efi_bootmgr_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, + unsigned int *index) +{ + u32 i; + efi_status_t ret; + efi_uintn_t size; + + if (buf_size < u16_strsize(u"Boot####")) + return EFI_BUFFER_TOO_SMALL; + + for (i = 0; i <= 0xFFFF; i++) { + size = 0; + efi_create_indexed_name(buf, buf_size, "Boot", i); + ret = efi_get_variable_int(buf, &efi_global_variable_guid, + NULL, &size, NULL, NULL); + if (ret == EFI_BUFFER_TOO_SMALL) + continue; + else + break; + } + + if (i > 0xFFFF) + return EFI_OUT_OF_RESOURCES; + + *index = i; + + return EFI_SUCCESS; +} + +/** + * efi_bootmgr_append_bootorder() - append new boot option in BootOrder variable + * + * @index: "Boot####" index to append to BootOrder variable + * Return: status code + */ +efi_status_t efi_bootmgr_append_bootorder(u16 index) +{ + u16 *bootorder; + efi_status_t ret; + u16 *new_bootorder = NULL; + efi_uintn_t last, size, new_size; + + /* 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] = 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(bootorder); + free(new_bootorder); + + return ret; +} + +/** + * efi_bootmgr_delete_boot_option() - delete selected boot option + * + * @boot_index: boot option index to delete + * Return: status code + */ +efi_status_t efi_bootmgr_delete_boot_option(u16 boot_index) +{ + u16 *bootorder; + u16 varname[9]; + efi_status_t ret; + unsigned int index; + efi_uintn_t num, size; + + efi_create_indexed_name(varname, sizeof(varname), + "Boot", boot_index); + ret = efi_set_variable_int(varname, &efi_global_variable_guid, + 0, 0, NULL, false); + if (ret != EFI_SUCCESS) { + log_err("delete boot option(%ls) failed\n", varname); + return ret; + } + + /* update BootOrder if necessary */ + bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size); + if (!bootorder) + return EFI_SUCCESS; + + num = size / sizeof(u16); + if (!efi_search_bootorder(bootorder, num, boot_index, &index)) + return EFI_SUCCESS; + + memmove(&bootorder[index], &bootorder[index + 1], + (num - index - 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); + + return ret; +} + +/** + * efi_bootmgr_update_media_device_boot_option() - generate the media device boot option + * + * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL + * and generate the bootmenu entries. + * This function also provide the BOOT#### variable maintenance for + * the media device entries. + * - Automatically create the BOOT#### variable for the newly detected device, + * this BOOT#### variable is distinguished by the special GUID + * stored in the EFI_LOAD_OPTION.optional_data + * - If the device is not attached to the system, the associated BOOT#### variable + * is automatically deleted. + * + * Return: status code + */ +efi_status_t efi_bootmgr_update_media_device_boot_option(void) +{ + u32 i; + efi_status_t ret; + efi_uintn_t count; + efi_handle_t *volume_handles = NULL; + struct eficonfig_media_boot_option *opt = NULL; + + ret = efi_locate_handle_buffer_int(BY_PROTOCOL, + &efi_simple_file_system_protocol_guid, + NULL, &count, + (efi_handle_t **)&volume_handles); + if (ret != EFI_SUCCESS) + return ret; + + opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); + if (!opt) + goto out; + + /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ + ret = efi_bootmgr_enumerate_boot_option(opt, volume_handles, count); + if (ret != EFI_SUCCESS) + goto out; + + /* + * System hardware configuration may vary depending on the user setup. + * The boot option is automatically added by the bootmenu. + * If the device is not attached to the system, the boot option needs + * to be deleted. + */ + ret = efi_bootmgr_delete_invalid_boot_option(opt, count); + if (ret != EFI_SUCCESS) + goto out; + + /* add non-existent boot option */ + for (i = 0; i < count; i++) { + u32 boot_index; + u16 var_name[9]; + + if (!opt[i].exist) { + ret = efi_bootmgr_get_unused_bootoption(var_name, sizeof(var_name), + &boot_index); + if (ret != EFI_SUCCESS) + 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, + opt[i].size, opt[i].lo, false); + if (ret != EFI_SUCCESS) + goto out; + + ret = efi_bootmgr_append_bootorder(boot_index); + if (ret != EFI_SUCCESS) { + efi_set_variable_int(var_name, &efi_global_variable_guid, + 0, 0, NULL, false); + goto out; + } + } + } + +out: + if (opt) { + for (i = 0; i < count; i++) + free(opt[i].lo); + } + free(opt); + efi_free_pool(volume_handles); + + return ret; +} diff --git a/lib/efi_loader/efi_helper.c b/lib/efi_loader/efi_helper.c index 1f4ab2b419..cdfd16ea77 100644 --- a/lib/efi_loader/efi_helper.c +++ b/lib/efi_loader/efi_helper.c @@ -257,3 +257,28 @@ efi_status_t efi_next_variable_name(efi_uintn_t *size, u16 **buf, efi_guid_t *gu return ret; } + +/** + * efi_search_bootorder() - search the boot option index in BootOrder + * + * @bootorder: pointer to the BootOrder variable + * @num: number of BootOrder entry + * @target: target boot option index to search + * @index: pointer to store the index of BootOrder variable + * Return: true if exists, false otherwise + */ +bool efi_search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index) +{ + u32 i; + + for (i = 0; i < num; i++) { + if (target == bootorder[i]) { + if (index) + *index = i; + + return true; + } + } + + return false; +}