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SubjectSubject: [PATCH 15/16] Squashfs: initrd support
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Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
---
init/do_mounts_rd.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index fedef93..30086a7 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -5,6 +5,7 @@
#include <linux/ext2_fs.h>
#include <linux/romfs_fs.h>
#include <linux/cramfs_fs.h>
+#include <linux/squashfs_fs.h>
#include <linux/initrd.h>
#include <linux/string.h>

@@ -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
*/
--
1.5.2.5


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