From b8fed87d3265d21d6f90e34934d93f70cb1e5cc1 Mon Sep 17 00:00:00 2001 From: Phillip Lougher Date: Mon, 5 Jan 2009 08:46:28 +0000 Subject: [PATCH] Squashfs: initrd support Signed-off-by: Phillip Lougher --- init/do_mounts_rd.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c index a7c748fa977..0f0f0cf3ba9 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -9,6 +9,7 @@ #include #include "do_mounts.h" +#include "../fs/squashfs/squashfs_fs.h" int __initdata rd_prompt = 1;/* 1 = prompt for RAM disk, 0 = don't prompt */ @@ -41,6 +42,7 @@ static int __init crd_load(int in_fd, int out_fd); * ext2 * romfs * cramfs + * squashfs * gzip */ static int __init @@ -51,6 +53,7 @@ identify_ramdisk_image(int fd, int start_block) struct ext2_super_block *ext2sb; struct romfs_super_block *romfsb; struct cramfs_super *cramfsb; + struct squashfs_super_block *squashfsb; int nblocks = -1; unsigned char *buf; @@ -62,6 +65,7 @@ identify_ramdisk_image(int fd, int start_block) ext2sb = (struct ext2_super_block *) buf; romfsb = (struct romfs_super_block *) buf; cramfsb = (struct cramfs_super *) buf; + squashfsb = (struct squashfs_super_block *) buf; memset(buf, 0xe5, size); /* @@ -99,6 +103,16 @@ identify_ramdisk_image(int fd, int start_block) goto done; } + /* squashfs is at block zero too */ + if (le32_to_cpu(squashfsb->s_magic) == SQUASHFS_MAGIC) { + printk(KERN_NOTICE + "RAMDISK: squashfs filesystem found at block %d\n", + start_block); + nblocks = (le64_to_cpu(squashfsb->bytes_used) + BLOCK_SIZE - 1) + >> BLOCK_SIZE_BITS; + goto done; + } + /* * Read block 1 to test for minix and ext2 superblock */ -- 2.41.1