[PATCH v4 1/6] ubi: allow to read from volume with offset

[Alexey Romanov]

Now user can pass an additional parameter 'offset'
to ubi_volume_read() function.

Signed-off-by: Alexey Romanov <avroma...@salutedevices.com>
Reviewed-by: Heiko Schocher <h...@denx.de>
Acked-by: Heiko Schocher <h...@denx.de>
---
 cmd/ubi.c           | 6 +++---
 env/ubi.c           | 6 +++---
 include/ubi_uboot.h | 2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/cmd/ubi.c b/cmd/ubi.c
index 0a6a80bdd1..2257f68498 100644
--- a/cmd/ubi.c
+++ b/cmd/ubi.c
@@ -420,13 +420,13 @@ int ubi_volume_write(char *volume, void *buf, size_t size)
        return ubi_volume_begin_write(volume, buf, size, size);
 }
 
-int ubi_volume_read(char *volume, char *buf, size_t size)
+int ubi_volume_read(char *volume, char *buf, loff_t offset, size_t size)
 {
        int err, lnum, off, len, tbuf_size;
        void *tbuf;
        unsigned long long tmp;
        struct ubi_volume *vol;
-       loff_t offp = 0;
+       loff_t offp = offset;
        size_t len_read;
 
        vol = ubi_find_volume(volume);
@@ -787,7 +787,7 @@ static int do_ubi(struct cmd_tbl *cmdtp, int flag, int 
argc, char *const argv[])
                }
 
                if (argc == 3) {
-                       return ubi_volume_read(argv[3], (char *)addr, size);
+                       return ubi_volume_read(argv[3], (char *)addr, 0, size);
                }
        }
 
diff --git a/env/ubi.c b/env/ubi.c
index 445d34fedb..661801d5a9 100644
--- a/env/ubi.c
+++ b/env/ubi.c
@@ -135,13 +135,13 @@ static int env_ubi_load(void)
                return -EIO;
        }
 
-       read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
+       read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1, 0,
                                     CONFIG_ENV_SIZE);
        if (read1_fail)
                printf("\n** Unable to read env from %s:%s **\n",
                       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
 
-       read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND,
+       read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND, 0,
                                     (void *)tmp_env2, CONFIG_ENV_SIZE);
        if (read2_fail)
                printf("\n** Unable to read redundant env from %s:%s **\n",
@@ -172,7 +172,7 @@ static int env_ubi_load(void)
                return -EIO;
        }
 
-       if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, CONFIG_ENV_SIZE)) {
+       if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, 0, CONFIG_ENV_SIZE)) {
                printf("\n** Unable to read env from %s:%s **\n",
                       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
                env_set_default(NULL, 0);
diff --git a/include/ubi_uboot.h b/include/ubi_uboot.h
index d7a8851094..a4be0feabb 100644
--- a/include/ubi_uboot.h
+++ b/include/ubi_uboot.h
@@ -49,7 +49,7 @@ extern int ubi_init(void);
 extern void ubi_exit(void);
 extern int ubi_part(char *part_name, const char *vid_header_offset);
 extern int ubi_volume_write(char *volume, void *buf, size_t size);
-extern int ubi_volume_read(char *volume, char *buf, size_t size);
+extern int ubi_volume_read(char *volume, char *buf, loff_t offset, size_t 
size);
 
 extern struct ubi_device *ubi_devices[];
 int cmd_ubifs_mount(char *vol_name);
-- 
2.34.1