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| author | Arjan van de Ven <arjan@linux.intel.com> | 2006-12-06 20:37:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:36 -0800 |
| commit | 2e591bbc0d563e12f5a260fbbca0df7d5810910e (patch) | |
| tree | c113397d49285808aaa750cf76e0961649f9f4f7 /init/initramfs.c | |
| parent | f6337e2af42f9ea9ce296cfa18966dcf4f045f7d (diff) | |
| download | lwn-2e591bbc0d563e12f5a260fbbca0df7d5810910e.tar.gz lwn-2e591bbc0d563e12f5a260fbbca0df7d5810910e.zip | |
[PATCH] Make initramfs printk a warning on incorrect cpio type
It turns out that the "-c" option of cpio is highly unportable even between
distros let alone unix variants, and may actually make the wrong type of
cpio archive. I just wasted quite some time on this, and the kernel can
detect this and warn about it (it's __init memory so it gets thrown away
and thus there is no runtime overhead)
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'init/initramfs.c')
| -rw-r--r-- | init/initramfs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/init/initramfs.c b/init/initramfs.c index d28c1094d7e5..85f04037ade1 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -182,6 +182,10 @@ static int __init do_collect(void) static int __init do_header(void) { + if (memcmp(collected, "070707", 6)==0) { + error("incorrect cpio method used: use -H newc option"); + return 1; + } if (memcmp(collected, "070701", 6)) { error("no cpio magic"); return 1; |