cmd: ubi: add a command to rename volume

This commit adds the command ubi rename to rename an ubi volume.
The format of the command is: ubi rename <oldname> <newname>.
To enable this command, the option CMD_UBI_RENAME must be selected.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/cmd/Kconfig b/cmd/Kconfig
index faa133da650a05017235c8b34089c60de8ca3c39..1c9634df3b505b443166651293e2bb74acaaca2c 100644 (file)
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -2173,6 +2173,14 @@ config CMD_UBI
          It is also strongly encouraged to also enable CONFIG_MTD to get full
          partition support.
 
+config CMD_UBI_RENAME
+       bool "Enable rename"
+       depends on CMD_UBI
+       default n
+       help
+         Enable a "ubi" command to rename ubi volume:
+          ubi rename <oldname> <newname>
+
 config CMD_UBIFS
        tristate "Enable UBIFS - Unsorted block images filesystem commands"
        depends on CMD_UBI

diff --git a/cmd/ubi.c b/cmd/ubi.c
index cecf251fdb917145ff9550696b1362ed3aa67799..54d128dbc5f225b769cab4928a2459dabdb592c6 100644 (file)
--- a/cmd/ubi.c
+++ b/cmd/ubi.c
@@ -251,6 +251,39 @@ out_err:
        return err;
 }
 
+static int ubi_rename_vol(char *oldname, char *newname)
+{
+       struct ubi_volume *vol;
+       struct ubi_rename_entry rename;
+       struct ubi_volume_desc desc;
+       struct list_head list;
+
+       vol = ubi_find_volume(oldname);
+       if (!vol) {
+               printf("%s: volume %s doesn't exist\n", __func__, oldname);
+               return ENODEV;
+       }
+
+       printf("Rename UBI volume %s to %s\n", oldname, newname);
+
+       if (ubi->ro_mode) {
+               printf("%s: ubi device is in read-only mode\n", __func__);
+               return EROFS;
+       }
+
+       rename.new_name_len = strlen(newname);
+       strcpy(rename.new_name, newname);
+       rename.remove = 0;
+       desc.vol = vol;
+       desc.mode = 0;
+       rename.desc = &desc;
+       INIT_LIST_HEAD(&rename.list);
+       INIT_LIST_HEAD(&list);
+       list_add(&rename.list, &list);
+
+       return ubi_rename_volumes(ubi, &list);
+}
+
 static int ubi_volume_continue_write(char *volume, void *buf, size_t size)
 {
        int err = 1;
@@ -604,6 +637,9 @@ static int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                        return ubi_remove_vol(argv[2]);
        }
 
+       if (IS_ENABLED(CONFIG_CMD_UBI_RENAME) && !strncmp(argv[1], "rename", 6))
+               return ubi_rename_vol(argv[2], argv[3]);
+
        if (strncmp(argv[1], "skipcheck", 9) == 0) {
                /* E.g., change skip_check flag */
                if (argc == 4) {
@@ -692,6 +728,9 @@ U_BOOT_CMD(
                " - Read volume to address with size\n"
        "ubi remove[vol] volume"
                " - Remove volume\n"
+#if IS_ENABLED(CONFIG_CMD_UBI_RENAME)
+       "ubi rename oldname newname\n"
+#endif
        "ubi skipcheck volume on/off - Set or clear skip_check flag in volume header\n"
        "[Legends]\n"
        " volume: character name\n"