__type(value, struct val);
} map_spin_lock SEC(".maps");
-struct timer {
- struct bpf_timer t;
-};
-
-struct {
- __uint(type, BPF_MAP_TYPE_ARRAY);
- __uint(max_entries, 1);
- __type(key, int);
- __type(value, struct timer);
-} map_timer SEC(".maps");
-
SEC("kprobe")
__description("bpf_ktime_get_coarse_ns is forbidden in BPF_PROG_TYPE_KPROBE")
__failure __msg("program of this type cannot use helper bpf_ktime_get_coarse_ns")
: __clobber_all);
}
-SEC("kprobe")
-__description("bpf_timer_init isn restricted in BPF_PROG_TYPE_KPROBE")
-__failure __msg("tracing progs cannot use bpf_timer yet")
-__naked void in_bpf_prog_type_kprobe_2(void)
-{
- asm volatile (" \
- r2 = r10; \
- r2 += -8; \
- r1 = 0; \
- *(u64*)(r2 + 0) = r1; \
- r1 = %[map_timer] ll; \
- call %[bpf_map_lookup_elem]; \
- if r0 == 0 goto l0_%=; \
- r1 = r0; \
- r2 = %[map_timer] ll; \
- r3 = 1; \
-l0_%=: call %[bpf_timer_init]; \
- exit; \
-" :
- : __imm(bpf_map_lookup_elem),
- __imm(bpf_timer_init),
- __imm_addr(map_timer)
- : __clobber_all);
-}
-
-SEC("perf_event")
-__description("bpf_timer_init is forbidden in BPF_PROG_TYPE_PERF_EVENT")
-__failure __msg("tracing progs cannot use bpf_timer yet")
-__naked void bpf_prog_type_perf_event_2(void)
-{
- asm volatile (" \
- r2 = r10; \
- r2 += -8; \
- r1 = 0; \
- *(u64*)(r2 + 0) = r1; \
- r1 = %[map_timer] ll; \
- call %[bpf_map_lookup_elem]; \
- if r0 == 0 goto l0_%=; \
- r1 = r0; \
- r2 = %[map_timer] ll; \
- r3 = 1; \
-l0_%=: call %[bpf_timer_init]; \
- exit; \
-" :
- : __imm(bpf_map_lookup_elem),
- __imm(bpf_timer_init),
- __imm_addr(map_timer)
- : __clobber_all);
-}
-
-SEC("tracepoint")
-__description("bpf_timer_init is forbidden in BPF_PROG_TYPE_TRACEPOINT")
-__failure __msg("tracing progs cannot use bpf_timer yet")
-__naked void in_bpf_prog_type_tracepoint_2(void)
-{
- asm volatile (" \
- r2 = r10; \
- r2 += -8; \
- r1 = 0; \
- *(u64*)(r2 + 0) = r1; \
- r1 = %[map_timer] ll; \
- call %[bpf_map_lookup_elem]; \
- if r0 == 0 goto l0_%=; \
- r1 = r0; \
- r2 = %[map_timer] ll; \
- r3 = 1; \
-l0_%=: call %[bpf_timer_init]; \
- exit; \
-" :
- : __imm(bpf_map_lookup_elem),
- __imm(bpf_timer_init),
- __imm_addr(map_timer)
- : __clobber_all);
-}
-
-SEC("raw_tracepoint")
-__description("bpf_timer_init is forbidden in BPF_PROG_TYPE_RAW_TRACEPOINT")
-__failure __msg("tracing progs cannot use bpf_timer yet")
-__naked void bpf_prog_type_raw_tracepoint_2(void)
-{
- asm volatile (" \
- r2 = r10; \
- r2 += -8; \
- r1 = 0; \
- *(u64*)(r2 + 0) = r1; \
- r1 = %[map_timer] ll; \
- call %[bpf_map_lookup_elem]; \
- if r0 == 0 goto l0_%=; \
- r1 = r0; \
- r2 = %[map_timer] ll; \
- r3 = 1; \
-l0_%=: call %[bpf_timer_init]; \
- exit; \
-" :
- : __imm(bpf_map_lookup_elem),
- __imm(bpf_timer_init),
- __imm_addr(map_timer)
- : __clobber_all);
-}
-
SEC("kprobe")
__description("bpf_spin_lock is forbidden in BPF_PROG_TYPE_KPROBE")
__failure __msg("tracing progs cannot use bpf_spin_lock yet")