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core: serialize device cgroup bpf progs across daemon-reload/reexec

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Follows what was done in b57d752326 and
adds a test that verifies the device BPF program is not detached during
reload/reexec.
This commit is contained in:
Anita Zhang
2021-10-13 11:13:56 +09:00
committed by Yu Watanabe
parent c2e22d73ae
commit 0b4f8d9498
6 changed files with 57 additions and 0 deletions
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src/core/unit-serialize.c
+4
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@@ -171,6 +171,7 @@ int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool switching_root) {
(void) bpf_program_serialize_attachment(f, fds, "ip-bpf-ingress-installed", u->ip_bpf_ingress_installed);
(void) bpf_program_serialize_attachment(f, fds, "ip-bpf-egress-installed", u->ip_bpf_egress_installed);
(void) bpf_program_serialize_attachment(f, fds, "bpf-device-control-installed", u->bpf_device_control_installed);
(void) bpf_program_serialize_attachment_set(f, fds, "ip-bpf-custom-ingress-installed", u->ip_bpf_custom_ingress_installed);
(void) bpf_program_serialize_attachment_set(f, fds, "ip-bpf-custom-egress-installed", u->ip_bpf_custom_egress_installed);
@@ -408,6 +409,9 @@ int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
} else if (streq(l, "ip-bpf-egress-installed")) {
(void) bpf_program_deserialize_attachment(v, fds, &u->ip_bpf_egress_installed);
continue;
} else if (streq(l, "bpf-device-control-installed")) {
(void) bpf_program_deserialize_attachment(v, fds, &u->bpf_device_control_installed);
continue;
} else if (streq(l, "ip-bpf-custom-ingress-installed")) {
(void) bpf_program_deserialize_attachment_set(v, fds, &u->ip_bpf_custom_ingress_installed);