linux-kernel - [PATCH v3 7/9] bpf-lsm: Make bpf_lsm_kernel_read

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Message-ID: <20220302111404.193900-8-roberto.sassu@huawei.com>
Date:   Wed, 2 Mar 2022 12:14:02 +0100
From:   Roberto Sassu <roberto.sassu@...wei.com>
To:     <zohar@...ux.ibm.com>, <shuah@...nel.org>, <ast@...nel.org>,
        <daniel@...earbox.net>, <andrii@...nel.org>, <yhs@...com>,
        <kpsingh@...nel.org>, <revest@...omium.org>,
        <gregkh@...uxfoundation.org>
CC:     <linux-integrity@...r.kernel.org>,
        <linux-security-module@...r.kernel.org>,
        <linux-kselftest@...r.kernel.org>, <bpf@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Roberto Sassu <roberto.sassu@...wei.com>
Subject: [PATCH v3 7/9] bpf-lsm: Make bpf_lsm_kernel_read_file() as sleepable

Make bpf_lsm_kernel_read_file() as sleepable, so that bpf_ima_inode_hash()
or bpf_ima_file_hash() can be called inside the implementation of this
hook.

Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
---
 kernel/bpf/bpf_lsm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
index e8d27af5bbcc..064eccba641d 100644
--- a/kernel/bpf/bpf_lsm.c
+++ b/kernel/bpf/bpf_lsm.c
@@ -187,6 +187,7 @@ BTF_ID(func, bpf_lsm_inode_setxattr)
 BTF_ID(func, bpf_lsm_inode_symlink)
 BTF_ID(func, bpf_lsm_inode_unlink)
 BTF_ID(func, bpf_lsm_kernel_module_request)
+BTF_ID(func, bpf_lsm_kernel_read_file)
 BTF_ID(func, bpf_lsm_kernfs_init_security)
 
 #ifdef CONFIG_KEYS
-- 
2.32.0