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fs: Replace offsetof() with struct_size() in ioctl_file_dedupe_range()

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When dealing with structures containing flexible arrays, struct_size()
provides additional compile-time checks compared to offsetof(). This
enhances code robustness and reduces the risk of potential errors.

Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Link: https://lore.kernel.org/20250829091510.597858-1-zhao.xichao@vivo.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Xichao Zhao 2025-08-29 17:15:10 +08:00 committed by Christian Brauner
parent ec6f613ef3
commit 38d1227fa7
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1 changed files with 1 additions and 1 deletions
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fs/ioctl.c
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@ -426,7 +426,7 @@ static int ioctl_file_dedupe_range(struct file *file,
goto out;
}
size = offsetof(struct file_dedupe_range, info[count]);
size = struct_size(same, info, count);
if (size > PAGE_SIZE) {
ret = -ENOMEM;
goto out;