From: Kuniyuki Iwashima <kuniyu@amazon.com>
To: <memxor@gmail.com>
Cc: <andrii@kernel.org>, <ast@kernel.org>, <bpf@vger.kernel.org>,
<brauner@kernel.org>, <casey@schaufler-ca.com>,
<daniel@iogearbox.net>, <eddyz87@gmail.com>, <gnoack@google.com>,
<haoluo@google.com>, <jmorris@namei.org>,
<john.fastabend@gmail.com>, <jolsa@kernel.org>,
<kpsingh@kernel.org>, <kuni1840@gmail.com>, <kuniyu@amazon.com>,
<linux-security-module@vger.kernel.org>, <martin.lau@linux.dev>,
<mic@digikod.net>, <netdev@vger.kernel.org>,
<omosnace@redhat.com>, <paul@paul-moore.com>, <sdf@fomichev.me>,
<selinux@vger.kernel.org>, <serge@hallyn.com>, <song@kernel.org>,
<stephen.smalley.work@gmail.com>, <yonghong.song@linux.dev>
Subject: Re: [PATCH v1 bpf-next 0/5] af_unix: Allow BPF LSM to scrub SCM_RIGHTS at sendmsg().
Date: Tue, 6 May 2025 11:16:24 -0700 [thread overview]
Message-ID: <20250506181630.8665-1-kuniyu@amazon.com> (raw)
In-Reply-To: <CAP01T74osG0y2LPY1uhmZtf4ag==RZ1OjLU3wQu_c-z5Wr2ZbA@mail.gmail.com>
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Tue, 6 May 2025 18:25:14 +0200
> Given you're probably going to drop scrubbing, all you'd need is to
> pass the pointer to file to inspect is f = bpf_core_cast(&fpl->fp[i],
> struct file).
Ah, I totally forgot bpf_core_cast().
> Then just find out the type of file using f->f_ops == something and if
> a disallowed file type is seen, return the verdict.
I'll change selftest as such.
Thanks!
next prev parent reply other threads:[~2025-05-06 18:16 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-05 21:56 [PATCH v1 bpf-next 0/5] af_unix: Allow BPF LSM to scrub SCM_RIGHTS at sendmsg() Kuniyuki Iwashima
2025-05-05 21:56 ` [PATCH v1 bpf-next 1/5] af_unix: Call security_unix_may_send() in sendmsg() for all socket types Kuniyuki Iwashima
2025-05-05 21:56 ` [PATCH v1 bpf-next 2/5] af_unix: Pass skb to security_unix_may_send() Kuniyuki Iwashima
2025-05-05 21:56 ` [PATCH v1 bpf-next 3/5] af_unix: Remove redundant scm->fp check in __scm_destroy() Kuniyuki Iwashima
2025-05-09 14:13 ` kernel test robot
2025-05-05 21:56 ` [PATCH v1 bpf-next 4/5] bpf: Add kfunc to scrub SCM_RIGHTS at security_unix_may_send() Kuniyuki Iwashima
2025-05-06 0:13 ` Alexei Starovoitov
2025-05-06 8:25 ` Mickaël Salaün
2025-05-09 15:06 ` kernel test robot
2025-05-05 21:56 ` [PATCH v1 bpf-next 5/5] selftest: bpf: Add test for bpf_unix_scrub_fds() Kuniyuki Iwashima
2025-05-05 22:49 ` [PATCH v1 bpf-next 0/5] af_unix: Allow BPF LSM to scrub SCM_RIGHTS at sendmsg() Kumar Kartikeya Dwivedi
2025-05-06 0:21 ` Kuniyuki Iwashima
2025-05-06 16:25 ` Kumar Kartikeya Dwivedi
2025-05-06 18:16 ` Kuniyuki Iwashima [this message]
2025-05-06 9:15 ` Christian Brauner
2025-05-06 16:08 ` Kumar Kartikeya Dwivedi
2025-05-06 18:14 ` Kuniyuki Iwashima
2025-05-05 23:21 ` Paul Moore
2025-05-06 0:35 ` Kuniyuki Iwashima
2025-05-06 14:57 ` Paul Moore
2025-05-06 12:17 ` Lennart Poettering
2025-05-06 18:19 ` Kuniyuki Iwashima
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