common, ubi: add ubi check volumename command

check with this ubi command, if a UBI volume with "volumename"
exists in current ubi device.

Signed-off-by: Heiko Schocher <hs@denx.de>

diff --git a/common/cmd_ubi.c b/common/cmd_ubi.c
index 122ba7e171c1da4b9238bb3db2e967a156b39d95..7c4d950e966c41d0b810b38880f732f7164f310c 100644 (file)
--- a/common/cmd_ubi.c
+++ b/common/cmd_ubi.c
@@ -123,6 +123,27 @@ static int ubi_info(int layout)
        return 0;
 }
 
+static int ubi_check_volumename(const struct ubi_volume *vol, char *name)
+{
+       return strcmp(vol->name, name);
+}
+
+static int ubi_check(char *name)
+{
+       int i;
+
+       for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
+               if (!ubi->volumes[i])
+                       continue;       /* Empty record */
+
+               if (!ubi_check_volumename(ubi->volumes[i], name))
+                       return 0;
+       }
+
+       return -EEXIST;
+}
+
+
 static int verify_mkvol_req(const struct ubi_device *ubi,
                            const struct ubi_mkvol_req *req)
 {
@@ -558,6 +579,14 @@ static int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                return ubi_info(layout);
        }
 
+       if (strcmp(argv[1], "check") == 0) {
+               if (argc > 2)
+                       return ubi_check(argv[2]);
+
+               printf("Error, no volume name passed\n");
+               return 1;
+       }
+
        if (strncmp(argv[1], "create", 6) == 0) {
                int dynamic = 1;        /* default: dynamic volume */
 
@@ -663,6 +692,8 @@ U_BOOT_CMD(
                " header offset)\n"
        "ubi info [l[ayout]]"
                " - Display volume and ubi layout information\n"
+       "ubi check volumename"
+               " - check if volumename exists\n"
        "ubi create[vol] volume [size] [type]"
                " - create volume name with size\n"
        "ubi write[vol] address volume size"