Attachment 233558 Details for Bug 263625 – Fix FUSE_CREATE compat entry size read

[patch] Fix FUSE_CREATE compat entry size read

0001-fusefs-fix-FUSE_CREATE-compat-entry-size.patch (text/plain), 1.06 KB, created by Ali Abdallah on 2022-04-28 09:42:39 UTC

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Creator: Ali Abdallah

Created: 2022-04-28 09:42:39 UTC

Size: 1.06 KB

patch

obsolete

>From 6ce431dc892fb69257c633fc7702a5dd6ae7b809 Mon Sep 17 00:00:00 2001
>From: Ali Abdallah <ali.abdallah@suse.com>
>Date: Thu, 28 Apr 2022 11:28:49 +0200
>Subject: [PATCH] fusefs: fix FUSE_CREATE compat entry size
>
>Prior to 7.9, fuse_attr didn't have blksize and padding fields. On
>FUSE_CREATE currently we don't check for that, which makes userspace
>programs using older protocol version to fail.
>
>Add a check for that on FUSE_CREATE.
>---
> sys/fs/fuse/fuse_vnops.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
>diff --git a/sys/fs/fuse/fuse_vnops.c b/sys/fs/fuse/fuse_vnops.c
>index f95ee1b7f6b..6274b95591e 100644
>--- a/sys/fs/fuse/fuse_vnops.c
>+++ b/sys/fs/fuse/fuse_vnops.c
>@@ -1043,7 +1043,10 @@ fuse_vnop_create(struct vop_create_args *ap)
> 	}
> 
> 	if (op == FUSE_CREATE) {
>-		foo = (struct fuse_open_out*)(feo + 1);
>+		if (fuse_libabi_geq(data, 7, 9))
>+			foo = (struct fuse_open_out*)(feo + 1);
>+		else
>+			foo = (struct fuse_open_out*)((char*)feo + FUSE_COMPAT_ENTRY_OUT_SIZE);
> 	} else {
> 		/* Issue a separate FUSE_OPEN */
> 		struct fuse_open_in *foi;
>-- 
>2.35.1
>

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Attachments on bug 263625: 233558 | 233566