feat: add btrfs support

This changes the kernel config to enable btrfs support and adds a new
package for the btrfs kernel module.

Signed-off-by: Noel Georgi <git@frezbo.dev>

btrfs/files/modules.txt

@@ -0,0 +1,8 @@
+modules.order
+modules.builtin
+modules.builtin.modinfo
+kernel/crypto/blake2b_generic.ko
+kernel/crypto/zstd.ko
+kernel/crypto/xxhash_generic.ko
+kernel/lib/zstd/zstd_compress.ko
+kernel/fs/btrfs/btrfs.ko

btrfs/pkg.yaml

@@ -0,0 +1,23 @@
+name: btrfs-pkg
+variant: scratch
+shell: /toolchain/bin/bash
+dependencies:
+  - stage: base
+    runtime: true
+  - stage: kernel
+steps:
+  - env:
+      ARCH: {{ if eq .ARCH "aarch64"}}arm64{{ else if eq .ARCH "x86_64" }}x86_64{{ else }}unsupported{{ end }}
+    install:
+      - |
+        export KERNELRELEASE="{{ .linux_version }}-talos"
+
+        xargs -a /pkg/files/modules.txt -I {} install -D /lib/modules/${KERNELRELEASE}/{} /rootfs/lib/modules/${KERNELRELEASE}/{}
+        depmod -b /rootfs ${KERNELRELEASE}
+    test:
+      - |
+        # https://www.kernel.org/doc/html/v4.15/admin-guide/module-signing.html#signed-modules-and-stripping
+        find /rootfs/lib/modules -name '*.ko' -exec grep -FL '~Module signature appended~' {} \+
+finalize:
+  - from: /rootfs
+    to: /

kernel/build/config-amd64

@@ -1965,6 +1965,7 @@ CONFIG_BLK_DEV=y
 # CONFIG_BLK_DEV_FD is not set
 CONFIG_CDROM=y
 # CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
+# CONFIG_ZRAM is not set
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
 # CONFIG_BLK_DEV_DRBD is not set
@@ -4941,7 +4942,13 @@ CONFIG_XFS_POSIX_ACL=y
 # CONFIG_XFS_WARN is not set
 # CONFIG_XFS_DEBUG is not set
 # CONFIG_GFS2_FS is not set
-# CONFIG_BTRFS_FS is not set
+CONFIG_BTRFS_FS=m
+CONFIG_BTRFS_FS_POSIX_ACL=y
+# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
+# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
+# CONFIG_BTRFS_DEBUG is not set
+# CONFIG_BTRFS_ASSERT is not set
+# CONFIG_BTRFS_FS_REF_VERIFY is not set
 # CONFIG_NILFS2_FS is not set
 # CONFIG_F2FS_FS is not set
 CONFIG_FS_POSIX_ACL=y
@@ -5388,7 +5395,7 @@ CONFIG_CRYPTO_ESSIV=y
 #
 # Hashes, digests, and MACs
 #
-# CONFIG_CRYPTO_BLAKE2B is not set
+CONFIG_CRYPTO_BLAKE2B=m
 CONFIG_CRYPTO_CMAC=y
 CONFIG_CRYPTO_GHASH=y
 CONFIG_CRYPTO_HMAC=y
@@ -5406,7 +5413,7 @@ CONFIG_CRYPTO_SHA512=y
 # CONFIG_CRYPTO_VMAC is not set
 # CONFIG_CRYPTO_WP512 is not set
 # CONFIG_CRYPTO_XCBC is not set
-# CONFIG_CRYPTO_XXHASH is not set
+CONFIG_CRYPTO_XXHASH=m
 # end of Hashes, digests, and MACs
 
 #
@@ -5421,11 +5428,11 @@ CONFIG_CRYPTO_CRC32=y
 # Compression
 #
 CONFIG_CRYPTO_DEFLATE=y
-# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_LZO=y
 # CONFIG_CRYPTO_842 is not set
 # CONFIG_CRYPTO_LZ4 is not set
 # CONFIG_CRYPTO_LZ4HC is not set
-# CONFIG_CRYPTO_ZSTD is not set
+CONFIG_CRYPTO_ZSTD=m
 # end of Compression
 
 #
@@ -5597,7 +5604,10 @@ CONFIG_XXHASH=y
 # CONFIG_RANDOM32_SELFTEST is not set
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZLIB_DEFLATE=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
 CONFIG_ZSTD_COMMON=y
+CONFIG_ZSTD_COMPRESS=m
 CONFIG_ZSTD_DECOMPRESS=y
 CONFIG_XZ_DEC=y
 CONFIG_XZ_DEC_X86=y

kernel/build/config-arm64

@@ -2237,6 +2237,7 @@ CONFIG_BLK_DEV=y
 # CONFIG_BLK_DEV_NULL_BLK is not set
 CONFIG_CDROM=y
 # CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
+# CONFIG_ZRAM is not set
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
 # CONFIG_BLK_DEV_DRBD is not set
@@ -7459,7 +7460,13 @@ CONFIG_XFS_POSIX_ACL=y
 # CONFIG_XFS_DEBUG is not set
 # CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
-# CONFIG_BTRFS_FS is not set
+CONFIG_BTRFS_FS=m
+CONFIG_BTRFS_FS_POSIX_ACL=y
+# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
+# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
+# CONFIG_BTRFS_DEBUG is not set
+# CONFIG_BTRFS_ASSERT is not set
+# CONFIG_BTRFS_FS_REF_VERIFY is not set
 # CONFIG_NILFS2_FS is not set
 # CONFIG_F2FS_FS is not set
 CONFIG_FS_POSIX_ACL=y
@@ -7922,7 +7929,7 @@ CONFIG_CRYPTO_ESSIV=y
 #
 # Hashes, digests, and MACs
 #
-# CONFIG_CRYPTO_BLAKE2B is not set
+CONFIG_CRYPTO_BLAKE2B=m
 CONFIG_CRYPTO_CMAC=y
 CONFIG_CRYPTO_GHASH=y
 CONFIG_CRYPTO_HMAC=y
@@ -7941,7 +7948,7 @@ CONFIG_CRYPTO_SM3=y
 # CONFIG_CRYPTO_VMAC is not set
 # CONFIG_CRYPTO_WP512 is not set
 # CONFIG_CRYPTO_XCBC is not set
-# CONFIG_CRYPTO_XXHASH is not set
+CONFIG_CRYPTO_XXHASH=m
 # end of Hashes, digests, and MACs
 
 #
@@ -7957,11 +7964,11 @@ CONFIG_CRYPTO_CRC64_ROCKSOFT=y
 # Compression
 #
 CONFIG_CRYPTO_DEFLATE=y
-# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_LZO=y
 # CONFIG_CRYPTO_842 is not set
 # CONFIG_CRYPTO_LZ4 is not set
 # CONFIG_CRYPTO_LZ4HC is not set
-# CONFIG_CRYPTO_ZSTD is not set
+CONFIG_CRYPTO_ZSTD=m
 # end of Compression
 
 #
@@ -8161,9 +8168,11 @@ CONFIG_AUDIT_COMPAT_GENERIC=y
 # CONFIG_RANDOM32_SELFTEST is not set
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZLIB_DEFLATE=y
+CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_LZ4_DECOMPRESS=y
 CONFIG_ZSTD_COMMON=y
+CONFIG_ZSTD_COMPRESS=m
 CONFIG_ZSTD_DECOMPRESS=y
 CONFIG_XZ_DEC=y
 CONFIG_XZ_DEC_X86=y