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603b441623
Exclusive maps restrict map access to specific programs using a hash. The current hash used for this is SHA1, which is prone to collisions. This patch uses SHA256, which is more resilient against collisions. This new hash is stored in bpf_prog and used by the verifier to determine if a program can access a given exclusive map. The original 64-bit tags are kept, as they are used by users as a short, possibly colliding program identifier for non-security purposes. Signed-off-by: KP Singh <kpsingh@kernel.org> Link: https://lore.kernel.org/r/20250914215141.15144-2-kpsingh@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
104 lines
3.1 KiB
104 lines
3.1 KiB