Pavel Hrdina
2af3eed1aa
The current code has multiple issues and it should never be done like that. If someone updates list of allowed devices we should attach new program before we remove the old one for two reasons: 1. It takes some time to attach new program so there is a period of time when all devices are allowed. 2. BPF programs have limit for number of instructions (4096) and if user adds a lot of devices we might hit the instruction limit and the new program will not be accepted which will result in allow all devices because the old program was already removed. In order to attach the new program before we remove the old one we need to use BPF_F_ALLOW_MULTI flag every time. Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
systemd - System and Service Manager
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