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| author | Phillip Lougher <phillip@lougher.demon.co.uk> | 2009-01-05 08:46:28 +0000 |
|---|---|---|
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | 2009-01-05 08:46:28 +0000 |
| commit | b8fed87d3265d21d6f90e34934d93f70cb1e5cc1 (patch) | |
| tree | 5c6d39e9f38eae8aeaac79e0a2e489ab8a4a6af8 /init | |
| parent | 6ab5c1ca71ea8e04e97cd8ed473bd04e636850fd (diff) | |
| download | lwn-b8fed87d3265d21d6f90e34934d93f70cb1e5cc1.tar.gz lwn-b8fed87d3265d21d6f90e34934d93f70cb1e5cc1.zip | |
Squashfs: initrd support
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Diffstat (limited to 'init')
| -rw-r--r-- | 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 a7c748fa977a..0f0f0cf3ba9a 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -9,6 +9,7 @@ #include <linux/string.h> #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 */ |