Contrary to the buffer-format.rst documentation, initramfs cpio
extraction does not support "crc" archives, which carry "070702"
header magic. Make it a little clearer that "newc" (magic="070701") is
the only supported cpio format, by extending the POSIX.1 ASCII
(magic="070707") specific error message to also cover "crc" magic.
Signed-off-by: David Disseldorp <ddiss@xxxxxxx>
---
init/initramfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/init/initramfs.c b/init/initramfs.c
index 2f79b3ec0b40..44e692ae4646 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -258,7 +258,7 @@ static int __init do_collect(void)
static int __init do_header(void)
{
if (memcmp(collected, "070701", 6)) {
- if (memcmp(collected, "070707", 6) == 0)
+ if (memcmp(collected, "0707", 4) == 0)
error("incorrect cpio method used: use -H newc option");
else
error("no cpio magic");
--
2.31.1
