f621b53951
Refresh patches. Remove upstreamed patches: - ar7/002-MIPS-AR7-ensure-the-port-type-s-FCR-value-is-used.patch - backport/040-crypto-fix-typo-in-KPP-dependency-of-CRYPTO_ECDH.patch Remove layerscape/819-Revert-dmaengine-dmatest-move-callback-wait-queue-to.patch, it is superseded by upstream commit 297c7cc4b5651b174a62925b6c961085f04979fd. Remove pending/650-pppoe_header_pad.patch, it is superseded by upstream commit 1bd21b158e07e0b8c5a2ce832305a0ebfe42c480. Update patches that no longer apply: - ar71xx/004-register_gpio_driver_earlier.patch - hack/204-module_strip.patch - pending/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch Fixes CVE-2017-8824. Compile-tested: ar71xx. Runtime-tested: ar71xx. Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
67 lines
1.7 KiB
Diff
67 lines
1.7 KiB
Diff
From: Daniel Golle <daniel@makrotopia.org>
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Subject: ubi: auto-create ubiblock device for rootfs
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/mtd/ubi/block.c | 42 ++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 42 insertions(+)
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--- a/drivers/mtd/ubi/block.c
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+++ b/drivers/mtd/ubi/block.c
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@@ -635,6 +635,44 @@ static void __init ubiblock_create_from_
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}
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}
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+#define UBIFS_NODE_MAGIC 0x06101831
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+static inline int ubi_vol_is_ubifs(struct ubi_volume_desc *desc)
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+{
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+ int ret;
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+ uint32_t magic_of, magic;
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+ ret = ubi_read(desc, 0, (char *)&magic_of, 0, 4);
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+ if (ret)
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+ return 0;
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+ magic = le32_to_cpu(magic_of);
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+ return magic == UBIFS_NODE_MAGIC;
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+}
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+
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+static void __init ubiblock_create_auto_rootfs(void)
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+{
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+ int ubi_num, ret, is_ubifs;
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+ struct ubi_volume_desc *desc;
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+ struct ubi_volume_info vi;
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+
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+ for (ubi_num = 0; ubi_num < UBI_MAX_DEVICES; ubi_num++) {
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+ desc = ubi_open_volume_nm(ubi_num, "rootfs", UBI_READONLY);
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+ if (IS_ERR(desc))
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+ continue;
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+
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+ ubi_get_volume_info(desc, &vi);
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+ is_ubifs = ubi_vol_is_ubifs(desc);
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+ ubi_close_volume(desc);
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+ if (is_ubifs)
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+ break;
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+
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+ ret = ubiblock_create(&vi);
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+ if (ret)
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+ pr_err("UBI error: block: can't add '%s' volume, err=%d\n",
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+ vi.name, ret);
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+ /* always break if we get here */
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+ break;
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+ }
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+}
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+
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static void ubiblock_remove_all(void)
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{
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struct ubiblock *next;
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@@ -667,6 +705,10 @@ int __init ubiblock_init(void)
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*/
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ubiblock_create_from_param();
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+ /* auto-attach "rootfs" volume if existing and non-ubifs */
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+ if (IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV))
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+ ubiblock_create_auto_rootfs();
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+
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/*
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* Block devices are only created upon user requests, so we ignore
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* existing volumes.
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