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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@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220302111404.193900-8-roberto.sassu@huawei.com
This commit is contained in:
Roberto Sassu 2022-03-02 12:14:02 +01:00 committed by Alexei Starovoitov
parent 91e8fa254d
commit df6b3039fa
1 changed files with 1 additions and 0 deletions
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kernel/bpf/bpf_lsm.c
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@ -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