linux-kernel - [PATCH] init: open /initrd.image with O

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Message-ID: <20240317221522.896040-1-jsperbeck@google.com>
Date: Sun, 17 Mar 2024 15:15:22 -0700
From: John Sperbeck <jsperbeck@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>, Jens Axboe <axboe@...nel.dk>, 
	"Peter Zijlstra (Intel)" <peterz@...radead.org>, Thomas Gleixner <tglx@...utronix.de>, 
	"ndesaulniers@...gle.com" <ndesaulniers@...gle.com>
Cc: linux-kernel@...r.kernel.org, John Sperbeck <jsperbeck@...gle.com>
Subject: [PATCH] init: open /initrd.image with O_LARGEFILE

If initrd data is larger than 2Gb, we'll eventually fail to write to
the /initrd.image file when we hit that limit, unless O_LARGEFILE is set.

Signed-off-by: John Sperbeck <jsperbeck@...gle.com>
---
 init/initramfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init/initramfs.c b/init/initramfs.c
index 76deb48c38cb..b607d3463b47 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -683,7 +683,7 @@ static void __init populate_initrd_image(char *err)
 
 	printk(KERN_INFO "rootfs image is not initramfs (%s); looks like an initrd\n",
 			err);
-	file = filp_open("/initrd.image", O_WRONLY | O_CREAT, 0700);
+	file = filp_open("/initrd.image", O_WRONLY|O_CREAT|O_LARGEFILE, 0700);
 	if (IS_ERR(file))
 		return;
 
-- 
2.44.0.291.gc1ea87d7ee-goog