20 lines
523 B
C
20 lines
523 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2025 Google LLC.
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*/
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#include <linux/fs.h>
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#include <linux/bpf_lsm.h>
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/*
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* Strong definition of the mmap_file() BPF LSM hook. The __nullable suffix on
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* the struct file pointer parameter name marks it as PTR_MAYBE_NULL. This
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* explicitly enforces that BPF LSM programs check for NULL before attempting to
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* dereference it.
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*/
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int bpf_lsm_mmap_file(struct file *file__nullable, unsigned long reqprot,
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unsigned long prot, unsigned long flags)
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{
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return 0;
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}
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