efi_loader: use efi_create_indexed_name()

Simplify the creation of indexed variable names like 'Boot0000' by using
function efi_create_indexed_name().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index 4c0facd..9c3ba73 100644 (file)
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -227,8 +227,7 @@ static int do_efi_capsule_res(struct cmd_tbl *cmdtp, int flag,
 {
        int capsule_id;
        char *endp;
-       char var_name[12];
-       u16 var_name16[12], *p;
+       u16 var_name16[12];
        efi_guid_t guid;
        struct efi_capsule_result_variable_header *result = NULL;
        efi_uintn_t size;
@@ -259,9 +258,8 @@ static int do_efi_capsule_res(struct cmd_tbl *cmdtp, int flag,
                if (capsule_id < 0 || capsule_id > 0xffff)
                        return CMD_RET_USAGE;
 
-               sprintf(var_name, "Capsule%04X", capsule_id);
-               p = var_name16;
-               utf8_utf16_strncpy(&p, var_name, 9);
+               efi_create_indexed_name(var_name16, sizeof(var_name16),
+                                       "Capsule", capsule_id);
        }
 
        size = 0;
@@ -954,8 +952,7 @@ static int do_efi_boot_add(struct cmd_tbl *cmdtp, int flag,
 {
        int id;
        char *endp;
-       char var_name[9];
-       u16 var_name16[9], *p;
+       u16 var_name16[9];
        efi_guid_t guid;
        size_t label_len, label_len16;
        u16 *label;
@@ -988,9 +985,8 @@ static int do_efi_boot_add(struct cmd_tbl *cmdtp, int flag,
                        if (*endp != '\0' || id > 0xffff)
                                return CMD_RET_USAGE;
 
-                       sprintf(var_name, "Boot%04X", id);
-                       p = var_name16;
-                       utf8_utf16_strncpy(&p, var_name, 9);
+                       efi_create_indexed_name(var_name16, sizeof(var_name16),
+                                               "Boot", id);
 
                        /* label */
                        label_len = strlen(argv[2]);
@@ -1107,8 +1103,7 @@ static int do_efi_boot_rm(struct cmd_tbl *cmdtp, int flag,
        efi_guid_t guid;
        int id, i;
        char *endp;
-       char var_name[9];
-       u16 var_name16[9], *p;
+       u16 var_name16[9];
        efi_status_t ret;
 
        if (argc == 1)
@@ -1120,10 +1115,8 @@ static int do_efi_boot_rm(struct cmd_tbl *cmdtp, int flag,
                if (*endp != '\0' || id > 0xffff)
                        return CMD_RET_FAILURE;
 
-               sprintf(var_name, "Boot%04X", id);
-               p = var_name16;
-               utf8_utf16_strncpy(&p, var_name, 9);
-
+               efi_create_indexed_name(var_name16, sizeof(var_name16),
+                                       "Boot", id);
                ret = EFI_CALL(efi_set_variable(var_name16, &guid, 0, 0, NULL));
                if (ret) {
                        printf("Cannot remove %ls\n", var_name16);
@@ -1313,8 +1306,7 @@ static int show_efi_boot_order(void)
        u16 *bootorder;
        efi_uintn_t size;
        int num, i;
-       char var_name[9];
-       u16 var_name16[9], *p16;
+       u16 var_name16[9];
        void *data;
        struct efi_load_option lo;
        efi_status_t ret;
@@ -1344,16 +1336,15 @@ static int show_efi_boot_order(void)
 
        num = size / sizeof(u16);
        for (i = 0; i < num; i++) {
-               sprintf(var_name, "Boot%04X", bootorder[i]);
-               p16 = var_name16;
-               utf8_utf16_strncpy(&p16, var_name, 9);
+               efi_create_indexed_name(var_name16, sizeof(var_name16),
+                                       "Boot", i);
 
                size = 0;
                ret = EFI_CALL(efi_get_variable(var_name16,
                                                &efi_global_variable_guid, NULL,
                                                &size, NULL));
                if (ret != EFI_BUFFER_TOO_SMALL) {
-                       printf("%2d: %s: (not defined)\n", i + 1, var_name);
+                       printf("%2d: %ls: (not defined)\n", i + 1, var_name16);
                        continue;
                }
 
@@ -1378,7 +1369,7 @@ static int show_efi_boot_order(void)
                        goto out;
                }
 
-               printf("%2d: %s: %ls\n", i + 1, var_name, lo.label);
+               printf("%2d: %ls: %ls\n", i + 1, var_name16, lo.label);
 
                free(data);
        }