mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 01:59:02 +00:00
54 lines
1.8 KiB
Diff
54 lines
1.8 KiB
Diff
|
From 03cb793b26834ddca170ba87057c8f883772dd45 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Date: Thu, 3 Oct 2024 00:11:41 +0200
|
||
|
|
Subject: [PATCH 1/5] block: add support for defining read-only partitions
|
||
|
|
|
||
|
|
Add support for defining read-only partitions and complete support for
|
||
|
|
it in the cmdline partition parser as the additional "ro" after a
|
||
|
|
partition is scanned but never actually applied.
|
||
|
|
|
||
|
|
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Reviewed-by: Christoph Hellwig <hch@lst.de>
|
||
|
|
Link: https://lore.kernel.org/r/20241002221306.4403-2-ansuelsmth@gmail.com
|
||
|
|
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
||
|
|
---
|
||
|
|
block/blk.h | 1 +
|
||
|
|
block/partitions/cmdline.c | 3 +++
|
||
|
|
block/partitions/core.c | 3 +++
|
||
|
|
3 files changed, 7 insertions(+)
|
||
|
|
|
||
|
|
--- a/block/blk.h
|
||
|
|
+++ b/block/blk.h
|
||
|
|
@@ -424,6 +424,7 @@ void blk_free_ext_minor(unsigned int min
|
||
|
|
#define ADDPART_FLAG_NONE 0
|
||
|
|
#define ADDPART_FLAG_RAID 1
|
||
|
|
#define ADDPART_FLAG_WHOLEDISK 2
|
||
|
|
+#define ADDPART_FLAG_READONLY 4
|
||
|
|
int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
|
||
|
|
sector_t length);
|
||
|
|
int bdev_del_partition(struct gendisk *disk, int partno);
|
||
|
|
--- a/block/partitions/cmdline.c
|
||
|
|
+++ b/block/partitions/cmdline.c
|
||
|
|
@@ -237,6 +237,9 @@ static int add_part(int slot, struct cmd
|
||
|
|
put_partition(state, slot, subpart->from >> 9,
|
||
|
|
subpart->size >> 9);
|
||
|
|
|
||
|
|
+ if (subpart->flags & PF_RDONLY)
|
||
|
|
+ state->parts[slot].flags |= ADDPART_FLAG_READONLY;
|
||
|
|
+
|
||
|
|
info = &state->parts[slot].info;
|
||
|
|
|
||
|
|
strscpy(info->volname, subpart->name, sizeof(info->volname));
|
||
|
|
--- a/block/partitions/core.c
|
||
|
|
+++ b/block/partitions/core.c
|
||
|
|
@@ -392,6 +392,9 @@ static struct block_device *add_partitio
|
||
|
|
goto out_del;
|
||
|
|
}
|
||
|
|
|
||
|
|
+ if (flags & ADDPART_FLAG_READONLY)
|
||
|
|
+ bdev->bd_read_only = true;
|
||
|
|
+
|
||
|
|
/* everything is up and running, commence */
|
||
|
|
err = xa_insert(&disk->part_tbl, partno, bdev, GFP_KERNEL);
|
||
|
|
if (err)
|