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Date: Fri, 10 Jan 2025 07:05:03 +0100
From: Greg KH <gregkh@linuxfoundation.org>
To: Blaise Boscaccy <bboscaccy@linux.microsoft.com>
Cc: bpf@vger.kernel.org, nkapron@google.com, teknoraver@meta.com,
	roberto.sassu@huawei.com, paul@paul-moore.com, code@tyhicks.com,
	flaniel@linux.microsoft.com
Subject: Re: [PATCH 07/14] bpf: Implement BPF_LOAD_FD subcommand handler
Message-ID: <2025011010-unglue-latch-34ea@gregkh>
References: <20250109214617.485144-1-bboscaccy@linux.microsoft.com>
 <20250109214617.485144-8-bboscaccy@linux.microsoft.com>
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In-Reply-To: <20250109214617.485144-8-bboscaccy@linux.microsoft.com>

On Thu, Jan 09, 2025 at 01:43:49PM -0800, Blaise Boscaccy wrote:
> The new LOAD_FD subcommand keys off of a sysfs entry file descriptor
> and a file descriptor pointing to a raw elf object file.

A sysfs file descriptor?  That feels very odd and is not how sysfs
should be used, as it's only for text files and binary pass-through
stuff.

> +static void bpf_loader_show_fdinfo(struct seq_file *m, struct file *filp)
> +{
> +	int i;
> +	struct bpf_obj *obj = filp->private_data;
> +
> +	for (i = 0; i < obj->nr_programs; i++)
> +		seq_printf(m, "program: %s\n", obj->progs[i].name);

So what file is printing this out in sysfs?  Where is the
Documentation/ABI/ entry for it?

confused,

greg k-h