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init: open /initrd.image with O_LARGEFILE

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[ Upstream commit 4624b346cf67400ef46a31771011fb798dd2f999 ]

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.

Link: https://lkml.kernel.org/r/20240317221522.896040-1-jsperbeck@google.com
Signed-off-by: John Sperbeck <jsperbeck@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 9f0dcca773117f0b240d1db97db27f0b8aac106a)
[Vegard: fix conflicts due to missing various initramfs refactoring commits]
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
This commit is contained in:
John Sperbeck 2024-03-17 15:15:22 -07:00 committed by Vegard Nossum
parent 5314097a03
commit b38a90afb4
1 changed files with 1 additions and 1 deletions
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2
init/initramfs.c
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@ -630,7 +630,7 @@ static int __init populate_rootfs(void)
printk(KERN_INFO "rootfs image is not initramfs (%s)"
"; looks like an initrd\n", err);
fd = sys_open("/initrd.image",
O_WRONLY|O_CREAT, 0700);
O_WRONLY|O_CREAT|O_LARGEFILE, 0700);
if (fd >= 0) {
ssize_t written = xwrite(fd, (char *)initrd_start,
initrd_end - initrd_start);