bpf: Add more dentry kfuncs for BPF LSM programs #6038
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Add six new BPF kfuncs that enable BPF LSM programs to safely interact with dentry objects: - bpf_dget(): Acquire reference on dentry - bpf_dput(): Release reference on dentry - bpf_dget_parent(): Get referenced parent dentry - bpf_d_find_alias(): Find referenced alias dentry for inode - bpf_file_dentry(): Get dentry from file - bpf_file_vfsmount(): Get vfsmount from file All kfuncs are currently restricted to BPF_PROG_TYPE_LSM programs. Signed-off-by: David Windsor <[email protected]>
Add BPF selftests that exercise the new dentry kfuncs via an LSM program attached to the file_open hook. Signed-off-by: David Windsor <[email protected]>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=1005898 expired. Closing PR. |
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Pull request for series with
subject: bpf: Add more dentry kfuncs for BPF LSM programs
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1005898