From b52bb3712a64c404846f30300b339cfd01e316be Mon Sep 17 00:00:00 2001 From: Nikanth Karthikesan Date: Mon, 13 Apr 2009 14:39:38 -0700 Subject: init/initramfs: fix warning with CONFIG_BLK_DEV_RAM=n init/initramfs.c:520: warning: 'clean_rootfs' defined but not used Signed-off-by: Nikanth Karthikesan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- init/initramfs.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'init/initramfs.c') diff --git a/init/initramfs.c b/init/initramfs.c index 80cd713f6cc5..e44f2d932cc4 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -515,6 +515,7 @@ skip: initrd_end = 0; } +#ifdef CONFIG_BLK_DEV_RAM #define BUF_SIZE 1024 static void __init clean_rootfs(void) { @@ -561,6 +562,7 @@ static void __init clean_rootfs(void) sys_close(fd); kfree(buf); } +#endif static int __init populate_rootfs(void) { -- cgit v1.2.3 From d20d5a7456d57d8affa88f45f27ae96ea49c29e4 Mon Sep 17 00:00:00 2001 From: Randy Robertson Date: Mon, 13 Apr 2009 14:40:04 -0700 Subject: initramfs: fix initramfs to work with hardlinked init Change cb6ff208076b5f434db1b8c983429269d719cef5 ("NOMMU: Support XIP on initramfs") seems to have broken booting from initramfs with /sbin/init being a hardlink. It seems like the logic required for XIP on nommu, i.e. ftruncate to reported cpio header file size (body_len) is broken for hardlinks, which have a reported size of 0, and the truncate thus nukes the contents of the file (in my case busybox), making boot impossible and ending with runaway loop modprobe binfmt-0000 - and of course 0000 is not a valid binary format. My fix is to only call ftruncate if size is non-zero which fixes things for me, but I'm not certain whether this will break XIP for those files on nommu systems, although I would guess not. Signed-off-by: Randy Robertson Acked-by: David Howells Acked-by: Paul Mundt Acked-by: H. Peter Anvin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- init/initramfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'init/initramfs.c') diff --git a/init/initramfs.c b/init/initramfs.c index e44f2d932cc4..9ee7b7810417 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -310,7 +310,8 @@ static int __init do_name(void) if (wfd >= 0) { sys_fchown(wfd, uid, gid); sys_fchmod(wfd, mode); - sys_ftruncate(wfd, body_len); + if (body_len) + sys_ftruncate(wfd, body_len); vcollected = kstrdup(collected, GFP_KERNEL); state = CopyFile; } -- cgit v1.2.3