>> On Sun, Jul 10, 2022 at 3:38 AM Jose E. Marchesi >> <jose.marchesi@xxxxxxxxxx> wrote: >>> >>> >>> > On Sat, Jul 9, 2022 at 4:41 PM Jose E. Marchesi >>> > <jose.marchesi@xxxxxxxxxx> wrote: >>> >> >>> >> >>> >> > On Sat, Jul 9, 2022 at 2:32 PM James Hilliard <james.hilliard1@xxxxxxxxx> wrote: >>> >> >> >>> >> >> On Sat, Jul 9, 2022 at 2:21 PM Jose E. Marchesi >>> >> >> <jose.marchesi@xxxxxxxxxx> wrote: >>> >> >> > >>> >> >> > >>> >> >> > > On Sat, Jul 9, 2022 at 11:24 AM Jose E. Marchesi >>> >> >> > > <jose.marchesi@xxxxxxxxxx> wrote: >>> >> >> > >> >>> >> >> > >> >>> >> >> > >> > On Fri, Jul 8, 2022 at 12:33 PM Jose E. Marchesi >>> >> >> > >> > <jose.marchesi@xxxxxxxxxx> wrote: >>> >> >> > >> >> >>> >> >> > >> >> >>> >> >> > >> >> >> On Wed, Jul 6, 2022 at 10:13 AM James Hilliard >>> >> >> > >> >> >> <james.hilliard1@xxxxxxxxx> wrote: >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> Note I'm testing with the following patches: >>> >> >> > >> >> >>> > https://lore.kernel.org/bpf/20220706111839.1247911-1-james.hilliard1@xxxxxxxxx/ >>> >> >> > >> >> >>> > https://lore.kernel.org/bpf/20220706140623.2917858-1-james.hilliard1@xxxxxxxxx/ >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> It would appear there's some compatibility issues with bpftool gen and >>> >> >> > >> >> >>> GCC, not sure what side though is wrong here: >>> >> >> > >> >> >>> /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> >> > >> >> >>> gen object src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> >> >> > >> >> >>> src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.unstripped.o >>> >> >> > >> >> >>> libbpf: failed to find BTF info for global/extern symbol 'sd_restrictif_i' >>> >> >> > >> >> >>> Error: failed to link >>> >> >> > >> >> >>> 'src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.unstripped.o': >>> >> >> > >> >> >>> Unknown error -2 (-2) >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> Relevant difference seems to be this: >>> >> >> > >> >> >>> GCC: >>> >> >> > >> >> >>> [55] FUNC 'sd_restrictif_i' type_id=47 linkage=static >>> >> >> > >> >> >>> Clang: >>> >> >> > >> >> >>> [27] FUNC 'sd_restrictif_i' type_id=26 linkage=global >>> >> >> > >> >> > >>> >> >> > >> >> > For functions GCC generates a BTF_KIND_FUNC entry, which has no linkage >>> >> >> > >> >> > information, or so we thought: I just looked at bpftool/btf.c and I >>> >> >> > >> >> > found the linkage info for function types is expected to be encoded in >>> >> >> > >> >> > the vlen field of BTF_KIND_FUNC entries (why not adding a btf_func >>> >> >> > >> >> > instead???) which is surprising to say the least. >>> >> >> > >> >> > >>> >> >> > >> >> > We are changing GCC to encode the linkage info in vlen for these types. >>> >> >> > >> >> > Thanks for reporting this. >>> >> >> > >> >> >>> >> >> > >> >> Patch sent to GCC upstream: >>> >> >> > >> >> https://gcc.gnu.org/pipermail/gcc-patches/2022-July/598090.html >>> >> >> > >> > >>> >> >> > >> > I applied that patch on top of GCC 12.1.0 and it appears to fix the >>> >> >> > >> > bpftool gen object bug. >>> >> >> > >> > >>> >> >> > >> > I am however now hitting a different error during skeleton generation: >>> >> >> > >> > /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> >> > >> > gen skeleton src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> >> >> > >> > libbpf: elf: skipping unrecognized data section(9) .comment >>> >> >> > >> > libbpf: failed to alloc map 'restrict.bss' content buffer: -22 >>> >> >> > >> > Error: failed to open BPF object file: Invalid argument >>> >> >> > >> >>> >> >> > >> What is the size of the .bss section in the object file? Try with: >>> >> >> > >> >>> >> >> > >> $ size restrict-ifaces.bpf.o >>> >> >> > > >>> >> >> > > $ size >>> >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> >> >> > > text data bss dec hex filename >>> >> >> > > 386 25 0 411 19b >>> >> >> > > > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> >> >> > >>> >> >> > Right, so the .bss section is empty. I see a `const volatile unsigned >>> >> >> > char is_allow_list = 0;' in restrict-ifaces.bpf.c, but that goes to >>> >> >> > .data and not to .bss, as expected. >>> >> >> > >>> >> >> > If you build restrict-ifaces.bpf.o with LLVM, is the bss still empty? I >>> >> >> > don't think the code in libbpf.c even checks for this eventuality... >>> >> >> >>> >> >> LLVM version(which skeleton generation works with): >>> >> >> $ size restrict-ifaces.bpf.o >>> >> >> text data bss dec hex filename >>> >> >> 323 24 0 347 15b restrict-ifaces.bpf.o >>> >> >> >>> >> >> $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> >> btf dump file restrict-ifaces.bpf.o format raw >>> >> >> [1] PTR '(anon)' type_id=3 >>> >> >> [2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED >>> >> >> [3] ARRAY '(anon)' type_id=2 index_type_id=4 nr_elems=1 >>> >> >> [4] INT '__ARRAY_SIZE_TYPE__' size=4 bits_offset=0 nr_bits=32 encoding=(none) >>> >> >> [5] PTR '(anon)' type_id=6 >>> >> >> [6] TYPEDEF '__u32' type_id=7 >>> >> >> [7] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none) >>> >> >> [8] PTR '(anon)' type_id=9 >>> >> >> [9] TYPEDEF '__u8' type_id=10 >>> >> >> [10] INT 'unsigned char' size=1 bits_offset=0 nr_bits=8 encoding=(none) >>> >> >> [11] STRUCT '(anon)' size=24 vlen=3 >>> >> >> 'type' type_id=1 bits_offset=0 >>> >> >> 'key' type_id=5 bits_offset=64 >>> >> >> 'value' type_id=8 bits_offset=128 >>> >> >> [12] VAR 'sd_restrictif' type_id=11, linkage=global >>> >> >> [13] PTR '(anon)' type_id=14 >>> >> >> [14] CONST '(anon)' type_id=15 >>> >> >> [15] STRUCT '__sk_buff' size=192 vlen=33 >>> >> >> 'len' type_id=6 bits_offset=0 >>> >> >> 'pkt_type' type_id=6 bits_offset=32 >>> >> >> 'mark' type_id=6 bits_offset=64 >>> >> >> 'queue_mapping' type_id=6 bits_offset=96 >>> >> >> 'protocol' type_id=6 bits_offset=128 >>> >> >> 'vlan_present' type_id=6 bits_offset=160 >>> >> >> 'vlan_tci' type_id=6 bits_offset=192 >>> >> >> 'vlan_proto' type_id=6 bits_offset=224 >>> >> >> 'priority' type_id=6 bits_offset=256 >>> >> >> 'ingress_ifindex' type_id=6 bits_offset=288 >>> >> >> 'ifindex' type_id=6 bits_offset=320 >>> >> >> 'tc_index' type_id=6 bits_offset=352 >>> >> >> 'cb' type_id=16 bits_offset=384 >>> >> >> 'hash' type_id=6 bits_offset=544 >>> >> >> 'tc_classid' type_id=6 bits_offset=576 >>> >> >> 'data' type_id=6 bits_offset=608 >>> >> >> 'data_end' type_id=6 bits_offset=640 >>> >> >> 'napi_id' type_id=6 bits_offset=672 >>> >> >> 'family' type_id=6 bits_offset=704 >>> >> >> 'remote_ip4' type_id=6 bits_offset=736 >>> >> >> 'local_ip4' type_id=6 bits_offset=768 >>> >> >> 'remote_ip6' type_id=17 bits_offset=800 >>> >> >> 'local_ip6' type_id=17 bits_offset=928 >>> >> >> 'remote_port' type_id=6 bits_offset=1056 >>> >> >> 'local_port' type_id=6 bits_offset=1088 >>> >> >> 'data_meta' type_id=6 bits_offset=1120 >>> >> >> '(anon)' type_id=18 bits_offset=1152 >>> >> >> 'tstamp' type_id=20 bits_offset=1216 >>> >> >> 'wire_len' type_id=6 bits_offset=1280 >>> >> >> 'gso_segs' type_id=6 bits_offset=1312 >>> >> >> '(anon)' type_id=22 bits_offset=1344 >>> >> >> 'gso_size' type_id=6 bits_offset=1408 >>> >> >> 'hwtstamp' type_id=20 bits_offset=1472 >>> >> >> [16] ARRAY '(anon)' type_id=6 index_type_id=4 nr_elems=5 >>> >> >> [17] ARRAY '(anon)' type_id=6 index_type_id=4 nr_elems=4 >>> >> >> [18] UNION '(anon)' size=8 vlen=1 >>> >> >> 'flow_keys' type_id=19 bits_offset=0 >>> >> >> [19] PTR '(anon)' type_id=34 >>> >> >> [20] TYPEDEF '__u64' type_id=21 >>> >> >> [21] INT 'unsigned long long' size=8 bits_offset=0 nr_bits=64 encoding=(none) >>> >> >> [22] UNION '(anon)' size=8 vlen=1 >>> >> >> 'sk' type_id=23 bits_offset=0 >>> >> >> [23] PTR '(anon)' type_id=35 >>> >> >> [24] FUNC_PROTO '(anon)' ret_type_id=2 vlen=1 >>> >> >> 'sk' type_id=13 >>> >> >> [25] FUNC 'sd_restrictif_e' type_id=24 linkage=global >>> >> >> [26] FUNC 'sd_restrictif_i' type_id=24 linkage=global >>> >> >> [27] CONST '(anon)' type_id=28 >>> >> >> [28] VOLATILE '(anon)' type_id=9 >>> >> >> [29] VAR 'is_allow_list' type_id=27, linkage=global >>> >> >> [30] CONST '(anon)' type_id=31 >>> >> >> [31] INT 'char' size=1 bits_offset=0 nr_bits=8 encoding=SIGNED >>> >> >> [32] ARRAY '(anon)' type_id=30 index_type_id=4 nr_elems=18 >>> >> >> [33] VAR '_license' type_id=32, linkage=static >>> >> >> [34] FWD 'bpf_flow_keys' fwd_kind=struct >>> >> >> [35] FWD 'bpf_sock' fwd_kind=struct >>> >> >> [36] DATASEC '.rodata' size=1 vlen=1 >>> >> >> type_id=29 offset=0 size=1 (VAR 'is_allow_list') >>> >> >> [37] DATASEC 'license' size=18 vlen=1 >>> >> >> type_id=33 offset=0 size=18 (VAR '_license') >>> >> >> [38] DATASEC '.maps' size=24 vlen=1 >>> >> >> type_id=12 offset=0 size=24 (VAR 'sd_restrictif') >>> >> >> >>> >> > >>> >> > Skeleton generation debug output for GCC(failing) and LLVM(working) >>> >> > which may be helpful: >>> >> >>> >> Indeed it was helpful :) >>> >> >>> >> The GNU assembler generates an empty .bss section. This is a well >>> >> established behavior in GAS that happens in all supported targets. >>> >> >>> >> The LLVM assembler doesn't generate an empty .bss section. >>> >> >>> >> bpftool chokes on the empty .bss section. >>> >> >>> >> In this case I would suggest to fix bpf_object__init_global_data_maps in >>> >> order to skip empty sections. >>> >> >>> >> Something like this: >>> > >>> > Hmm, that seems to segfault: >>> >>> Yes, I see in bpf_object__elf_collect that sec_desc->data is not >>> initialized when a section is not recognized. In this case, this >>> happens with .comment. >>> >>> All right then: >>> >>> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c >>> index e89cc9c885b3..887b78780099 100644 >>> --- a/tools/lib/bpf/libbpf.c >>> +++ b/tools/lib/bpf/libbpf.c >>> @@ -1591,6 +1591,10 @@ static int bpf_object__init_global_data_maps(struct bpf_object *obj) >>> for (sec_idx = 1; sec_idx < obj->efile.sec_cnt; sec_idx++) { >>> sec_desc = &obj->efile.secs[sec_idx]; >>> >>> + /* Skip recognized sections with size 0. */ >>> + if (sec_desc->data && sec_desc->data->d_size == 0) >>> + continue; >>> + >>> switch (sec_desc->sec_type) { >>> case SEC_DATA: >>> sec_name = elf_sec_name(obj, elf_sec_by_idx(obj, sec_idx)); >> >> Ok, skeleton is now getting generated successfully, however it differs from the >> clang version so there's a build error when we include/use the header: >> ../src/core/restrict-ifaces.c: In function ‘prepare_restrict_ifaces_bpf’: >> ../src/core/restrict-ifaces.c:45:14: error: ‘struct >> restrict_ifaces_bpf’ has no member named ‘rodata’; did you mean >> ‘data’? >> 45 | obj->rodata->is_allow_list = is_allow_list; >> | ^~~~~~ >> | data >> >> The issue appears to be that clang generates "rodata" members in >> restrict_ifaces_bpf while with gcc we get "data" members instead. > > This is because the BPF GCC port is putting the > > const volatile unsigned char is_allow_list = 0; > > in a .data section instead of .rodata, due to the `volatile'. The > x86_64 GCC seems to use .rodata. > > Looking at why the PBF port does this... So, turns out GCC puts zero-initialized `const volatile' variables in .data sections (and not .rodata) in all the targets I have tried, like x86_64 and aarch64. So this is a LLVM and GCC divergence :/ >> Differences below: >> >> GCC: >> $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >> --debug gen skeleton >> output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >> libbpf: loading object 'restrict_ifaces_bpf' from buffer >> libbpf: elf: section(2) .symtab, size 336, link 1, flags 0, type=2 >> libbpf: elf: section(3) .data, size 1, link 0, flags 3, type=1 >> libbpf: elf: section(4) .bss, size 0, link 0, flags 3, type=8 >> libbpf: elf: section(5) cgroup_skb/egress, size 184, link 0, flags 6, type=1 >> libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' at >> insn offset 0 (0 bytes), code size 23 insns (184 bytes) >> libbpf: elf: section(6) cgroup_skb/ingress, size 184, link 0, flags 6, type=1 >> libbpf: sec 'cgroup_skb/ingress': found program 'sd_restrictif_i' at >> insn offset 0 (0 bytes), code size 23 insns (184 bytes) >> libbpf: elf: section(7) license, size 18, link 0, flags 2, type=1 >> libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >> libbpf: elf: section(8) .maps, size 24, link 0, flags 3, type=1 >> libbpf: elf: section(9) .comment, size 49, link 0, flags 30, type=1 >> libbpf: elf: skipping unrecognized data section(9) .comment >> libbpf: elf: section(10) .relcgroup_skb/egress, size 32, link 2, flags >> 40, type=9 >> libbpf: elf: section(11) .relcgroup_skb/ingress, size 32, link 2, >> flags 40, type=9 >> libbpf: elf: section(12) .BTF, size 3606, link 0, flags 0, type=1 >> libbpf: looking for externs among 14 symbols... >> libbpf: collected 0 externs total >> libbpf: map 'sd_restrictif': at sec_idx 8, offset 0. >> libbpf: map 'sd_restrictif': found type = 1. >> libbpf: map 'sd_restrictif': found key [12], sz = 4. >> libbpf: map 'sd_restrictif': found value [3], sz = 1. >> libbpf: map 'restrict.data' (global data): at sec_idx 3, offset 0, flags 400. >> libbpf: map 1 is "restrict.data" >> libbpf: sec '.relcgroup_skb/egress': collecting relocation for >> section(5) 'cgroup_skb/egress' >> libbpf: sec '.relcgroup_skb/egress': relo #0: insn #4 against 'sd_restrictif' >> libbpf: prog 'sd_restrictif_e': found map 0 (sd_restrictif, sec 8, off >> 0) for insn #4 >> libbpf: sec '.relcgroup_skb/egress': relo #1: insn #7 against 'is_allow_list' >> libbpf: prog 'sd_restrictif_e': found data map 1 (restrict.data, sec >> 3, off 0) for insn 7 >> libbpf: sec '.relcgroup_skb/ingress': collecting relocation for >> section(6) 'cgroup_skb/ingress' >> libbpf: sec '.relcgroup_skb/ingress': relo #0: insn #4 against 'sd_restrictif' >> libbpf: prog 'sd_restrictif_i': found map 0 (sd_restrictif, sec 8, off >> 0) for insn #4 >> libbpf: sec '.relcgroup_skb/ingress': relo #1: insn #7 against 'is_allow_list' >> libbpf: prog 'sd_restrictif_i': found data map 1 (restrict.data, sec >> 3, off 0) for insn 7 >> /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ >> >> /* THIS FILE IS AUTOGENERATED BY BPFTOOL! */ >> #ifndef __RESTRICT_IFACES_BPF_SKEL_H__ >> #define __RESTRICT_IFACES_BPF_SKEL_H__ >> >> #include <errno.h> >> #include <stdlib.h> >> #include <bpf/libbpf.h> >> >> struct restrict_ifaces_bpf { >> struct bpf_object_skeleton *skeleton; >> struct bpf_object *obj; >> struct { >> struct bpf_map *sd_restrictif; >> struct bpf_map *data; >> } maps; >> struct { >> struct bpf_program *sd_restrictif_e; >> struct bpf_program *sd_restrictif_i; >> } progs; >> struct { >> struct bpf_link *sd_restrictif_e; >> struct bpf_link *sd_restrictif_i; >> } links; >> struct restrict_ifaces_bpf__data { >> __u8 is_allow_list; >> } *data; >> >> #ifdef __cplusplus >> static inline struct restrict_ifaces_bpf *open(const struct >> bpf_object_open_opts *opts = nullptr); >> static inline struct restrict_ifaces_bpf *open_and_load(); >> static inline int load(struct restrict_ifaces_bpf *skel); >> static inline int attach(struct restrict_ifaces_bpf *skel); >> static inline void detach(struct restrict_ifaces_bpf *skel); >> static inline void destroy(struct restrict_ifaces_bpf *skel); >> static inline const void *elf_bytes(size_t *sz); >> #endif /* __cplusplus */ >> }; >> >> static void >> restrict_ifaces_bpf__destroy(struct restrict_ifaces_bpf *obj) >> { >> if (!obj) >> return; >> if (obj->skeleton) >> bpf_object__destroy_skeleton(obj->skeleton); >> free(obj); >> } >> >> static inline int >> restrict_ifaces_bpf__create_skeleton(struct restrict_ifaces_bpf *obj); >> >> static inline struct restrict_ifaces_bpf * >> restrict_ifaces_bpf__open_opts(const struct bpf_object_open_opts *opts) >> { >> struct restrict_ifaces_bpf *obj; >> int err; >> >> obj = (struct restrict_ifaces_bpf *)calloc(1, sizeof(*obj)); >> if (!obj) { >> errno = ENOMEM; >> return NULL; >> } >> >> err = restrict_ifaces_bpf__create_skeleton(obj); >> if (err) >> goto err_out; >> >> err = bpf_object__open_skeleton(obj->skeleton, opts); >> if (err) >> goto err_out; >> >> return obj; >> err_out: >> restrict_ifaces_bpf__destroy(obj); >> errno = -err; >> return NULL; >> } >> >> static inline struct restrict_ifaces_bpf * >> restrict_ifaces_bpf__open(void) >> { >> return restrict_ifaces_bpf__open_opts(NULL); >> } >> >> static inline int >> restrict_ifaces_bpf__load(struct restrict_ifaces_bpf *obj) >> { >> return bpf_object__load_skeleton(obj->skeleton); >> } >> >> static inline struct restrict_ifaces_bpf * >> restrict_ifaces_bpf__open_and_load(void) >> { >> struct restrict_ifaces_bpf *obj; >> int err; >> >> obj = restrict_ifaces_bpf__open(); >> if (!obj) >> return NULL; >> err = restrict_ifaces_bpf__load(obj); >> if (err) { >> restrict_ifaces_bpf__destroy(obj); >> errno = -err; >> return NULL; >> } >> return obj; >> } >> >> static inline int >> restrict_ifaces_bpf__attach(struct restrict_ifaces_bpf *obj) >> { >> return bpf_object__attach_skeleton(obj->skeleton); >> } >> >> static inline void >> restrict_ifaces_bpf__detach(struct restrict_ifaces_bpf *obj) >> { >> return bpf_object__detach_skeleton(obj->skeleton); >> } >> >> static inline const void *restrict_ifaces_bpf__elf_bytes(size_t *sz); >> >> static inline int >> restrict_ifaces_bpf__create_skeleton(struct restrict_ifaces_bpf *obj) >> { >> struct bpf_object_skeleton *s; >> int err; >> >> s = (struct bpf_object_skeleton *)calloc(1, sizeof(*s)); >> if (!s) { >> err = -ENOMEM; >> goto err; >> } >> >> s->sz = sizeof(*s); >> s->name = "restrict_ifaces_bpf"; >> s->obj = &obj->obj; >> >> /* maps */ >> s->map_cnt = 2; >> s->map_skel_sz = sizeof(*s->maps); >> s->maps = (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_skel_sz); >> if (!s->maps) { >> err = -ENOMEM; >> goto err; >> } >> >> s->maps[0].name = "sd_restrictif"; >> s->maps[0].map = &obj->maps.sd_restrictif; >> >> s->maps[1].name = "restrict.data"; >> s->maps[1].map = &obj->maps.data; >> s->maps[1].mmaped = (void **)&obj->data; >> >> /* programs */ >> s->prog_cnt = 2; >> s->prog_skel_sz = sizeof(*s->progs); >> s->progs = (struct bpf_prog_skeleton *)calloc(s->prog_cnt, s->prog_skel_sz); >> if (!s->progs) { >> err = -ENOMEM; >> goto err; >> } >> >> s->progs[0].name = "sd_restrictif_e"; >> s->progs[0].prog = &obj->progs.sd_restrictif_e; >> s->progs[0].link = &obj->links.sd_restrictif_e; >> >> s->progs[1].name = "sd_restrictif_i"; >> s->progs[1].prog = &obj->progs.sd_restrictif_i; >> s->progs[1].link = &obj->links.sd_restrictif_i; >> >> s->data = (void *)restrict_ifaces_bpf__elf_bytes(&s->data_sz); >> >> obj->skeleton = s; >> return 0; >> err: >> bpf_object__destroy_skeleton(s); >> return err; >> } >> >> static inline const void *restrict_ifaces_bpf__elf_bytes(size_t *sz) >> { >> *sz = 5616; >> return (const void *)"\ >> \x7f\x45\x4c\x46\x02\x01\x01\0\0\0\0\0\0\0\0\0\x01\0\xf7\0\x01\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\xb0\x12\0\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\x40\0\x0d\0\ >> \x01\0\0\x2e\x73\x74\x72\x74\x61\x62\0\x2e\x73\x79\x6d\x74\x61\x62\0\x2e\x64\ >> \x61\x74\x61\0\x2e\x62\x73\x73\0\x63\x67\x72\x6f\x75\x70\x5f\x73\x6b\x62\x2f\ >> \x65\x67\x72\x65\x73\x73\0\x63\x67\x72\x6f\x75\x70\x5f\x73\x6b\x62\x2f\x69\x6e\ >> \x67\x72\x65\x73\x73\0\x6c\x69\x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\x2e\ >> \x63\x6f\x6d\x6d\x65\x6e\x74\0\x72\x65\x73\x74\x72\x69\x63\x74\x2d\x69\x66\x61\ >> \x63\x65\x73\x2e\x62\x70\x66\x2e\x63\0\x5f\x6c\x69\x63\x65\x6e\x73\x65\0\x73\ >> \x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x65\0\x73\x64\x5f\x72\x65\ >> \x73\x74\x72\x69\x63\x74\x69\x66\0\x69\x73\x5f\x61\x6c\x6c\x6f\x77\x5f\x6c\x69\ >> \x73\x74\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x69\0\x2e\ >> \x72\x65\x6c\x63\x67\x72\x6f\x75\x70\x5f\x73\x6b\x62\x2f\x65\x67\x72\x65\x73\ >> \x73\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x70\x5f\x73\x6b\x62\x2f\x69\x6e\x67\ >> \x72\x65\x73\x73\0\x2e\x42\x54\x46\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\x58\0\0\0\x04\0\xf1\xff\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \x03\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x03\0\x04\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\x03\0\x05\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \x03\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x03\0\x07\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\x6e\0\0\0\x01\0\x07\0\0\0\0\0\0\0\0\0\x12\0\0\0\0\0\0\0\0\0\ >> \0\0\x03\0\x08\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x03\0\x09\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\x77\0\0\0\x12\0\x05\0\0\0\0\0\0\0\0\0\xb8\0\0\0\0\0\0\0\ >> \x87\0\0\0\x11\0\x08\0\0\0\0\0\0\0\0\0\x18\0\0\0\0\0\0\0\x95\0\0\0\x11\0\x03\0\ >> \0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\xa3\0\0\0\x12\0\x06\0\0\0\0\0\0\0\0\0\xb8\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\x61\x10\x28\0\0\0\0\0\x63\x0a\xfc\xff\0\0\0\0\xbf\ >> \xa2\0\0\0\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\x85\0\0\0\x01\0\0\0\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x71\x13\0\0\0\0\0\0\ >> \x57\x03\0\0\xff\0\0\0\x15\x03\x05\0\0\0\0\0\xbf\x02\0\0\0\0\0\0\x87\x02\0\0\0\ >> \0\0\0\x4f\x20\0\0\0\0\0\0\x77\0\0\0\x3f\0\0\0\x95\0\0\0\0\0\0\0\xb7\x01\0\0\ >> \x01\0\0\0\x15\0\x01\0\0\0\0\0\xbf\x31\0\0\0\0\0\0\xbf\x10\0\0\0\0\0\0\x57\0\0\ >> \0\x01\0\0\0\x95\0\0\0\0\0\0\0\x61\x10\x28\0\0\0\0\0\x63\x0a\xfc\xff\0\0\0\0\ >> \xbf\xa2\0\0\0\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\x85\0\0\0\x01\0\0\0\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x71\x13\0\0\0\0\ >> \0\0\x57\x03\0\0\xff\0\0\0\x15\x03\x05\0\0\0\0\0\xbf\x02\0\0\0\0\0\0\x87\x02\0\ >> \0\0\0\0\0\x4f\x20\0\0\0\0\0\0\x77\0\0\0\x3f\0\0\0\x95\0\0\0\0\0\0\0\xb7\x01\0\ >> \0\x01\0\0\0\x15\0\x01\0\0\0\0\0\xbf\x31\0\0\0\0\0\0\xbf\x10\0\0\0\0\0\0\x57\0\ >> \0\0\x01\0\0\0\x95\0\0\0\0\0\0\0\x4c\x47\x50\x4c\x2d\x32\x2e\x31\x2d\x6f\x72\ >> \x2d\x6c\x61\x74\x65\x72\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\x47\x43\x43\x3a\x20\x28\x42\x75\x69\x6c\x64\x72\x6f\x6f\x74\x20\x32\ >> \x30\x32\x32\x2e\x30\x35\x2d\x31\x33\x32\x2d\x67\x35\x32\x38\x62\x35\x61\x36\ >> \x35\x66\x36\x29\x20\x31\x32\x2e\x31\x2e\x30\0\0\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\ >> \x01\0\0\0\x0b\0\0\0\x38\0\0\0\0\0\0\0\x01\0\0\0\x0c\0\0\0\x20\0\0\0\0\0\0\0\ >> \x01\0\0\0\x0b\0\0\0\x38\0\0\0\0\0\0\0\x01\0\0\0\x0c\0\0\0\x9f\xeb\x01\0\x18\0\ >> \0\0\0\0\0\0\x9c\x07\0\0\x9c\x07\0\0\x62\x06\0\0\x01\0\0\0\0\0\0\x01\x01\0\0\0\ >> \x08\0\0\x03\x0d\0\0\0\0\0\0\x01\x01\0\0\0\x08\0\0\x02\x1b\0\0\0\0\0\0\x08\x02\ >> \0\0\0\0\0\0\0\0\0\0\x0a\x03\0\0\0\0\0\0\0\0\0\0\x09\x04\0\0\0\x20\0\0\0\0\0\0\ >> \x01\x02\0\0\0\x10\0\0\x01\x2a\0\0\0\0\0\0\x01\x02\0\0\0\x10\0\0\0\x3d\0\0\0\0\ >> \0\0\x08\x07\0\0\0\x43\0\0\0\0\0\0\x01\x04\0\0\0\x20\0\0\x01\x47\0\0\0\0\0\0\ >> \x08\x09\0\0\0\x4d\0\0\0\0\0\0\x01\x04\0\0\0\x20\0\0\0\x5a\0\0\0\0\0\0\x08\x0b\ >> \0\0\0\x60\0\0\0\0\0\0\x01\x08\0\0\0\x40\0\0\x01\x6e\0\0\0\0\0\0\x01\x08\0\0\0\ >> \x40\0\0\0\x85\0\0\0\0\0\0\x08\x0e\0\0\0\x8b\0\0\0\0\0\0\x01\x08\0\0\0\x40\0\0\ >> \0\x9d\0\0\0\0\0\0\x01\x08\0\0\0\x40\0\0\x01\xa6\0\0\0\0\0\0\x01\x01\0\0\0\x08\ >> \0\0\x03\0\0\0\0\0\0\0\x0a\x12\0\0\0\xab\0\0\0\0\0\0\x08\x08\0\0\0\xb2\0\0\0\0\ >> \0\0\x08\x0c\0\0\0\xb9\0\0\0\x1f\0\0\x06\x04\0\0\0\xc6\0\0\0\0\0\0\0\xda\0\0\0\ >> \x01\0\0\0\xec\0\0\0\x02\0\0\0\xff\0\0\0\x03\0\0\0\x17\x01\0\0\x04\0\0\0\x35\ >> \x01\0\0\x05\0\0\0\x4e\x01\0\0\x06\0\0\0\x68\x01\0\0\x07\0\0\0\x81\x01\0\0\x08\ >> \0\0\0\x9b\x01\0\0\x09\0\0\0\xb1\x01\0\0\x0a\0\0\0\xce\x01\0\0\x0b\0\0\0\xe4\ >> \x01\0\0\x0c\0\0\0\xff\x01\0\0\x0d\0\0\0\x19\x02\0\0\x0e\0\0\0\x2d\x02\0\0\x0f\ >> \0\0\0\x42\x02\0\0\x10\0\0\0\x56\x02\0\0\x11\0\0\0\x6a\x02\0\0\x12\0\0\0\x80\ >> \x02\0\0\x13\0\0\0\x9c\x02\0\0\x14\0\0\0\xbd\x02\0\0\x15\0\0\0\xe0\x02\0\0\x16\ >> \0\0\0\xf3\x02\0\0\x17\0\0\0\x06\x03\0\0\x18\0\0\0\x1e\x03\0\0\x19\0\0\0\x37\ >> \x03\0\0\x1a\0\0\0\x4f\x03\0\0\x1b\0\0\0\x64\x03\0\0\x1c\0\0\0\x7f\x03\0\0\x1d\ >> \0\0\0\x99\x03\0\0\x1e\0\0\0\0\0\0\0\x01\0\0\x05\x08\0\0\0\xb3\x03\0\0\x1d\0\0\ >> \0\0\0\0\0\xbd\x03\0\0\x0d\0\0\x04\x38\0\0\0\xcb\x03\0\0\x08\0\0\0\0\0\0\0\xd1\ >> \x03\0\0\x08\0\0\0\x10\0\0\0\xd7\x03\0\0\x08\0\0\0\x20\0\0\0\xe2\x03\0\0\x03\0\ >> \0\0\x30\0\0\0\xea\x03\0\0\x03\0\0\0\x38\0\0\0\xf8\x03\0\0\x03\0\0\0\x40\0\0\0\ >> \x01\x04\0\0\x03\0\0\0\x48\0\0\0\x0a\x04\0\0\x14\0\0\0\x50\0\0\0\x12\x04\0\0\ >> \x14\0\0\0\x60\0\0\0\x18\x04\0\0\x14\0\0\0\x70\0\0\0\0\0\0\0\x19\0\0\0\x80\0\0\ >> \0\x1e\x04\0\0\x0c\0\0\0\x80\x01\0\0\x24\x04\0\0\x15\0\0\0\xa0\x01\0\0\0\0\0\0\ >> \x02\0\0\x05\x20\0\0\0\0\0\0\0\x1a\0\0\0\0\0\0\0\0\0\0\0\x1b\0\0\0\0\0\0\0\0\0\ >> \0\0\x02\0\0\x04\x08\0\0\0\x2f\x04\0\0\x15\0\0\0\0\0\0\0\x38\x04\0\0\x15\0\0\0\ >> \x20\0\0\0\0\0\0\0\x02\0\0\x04\x20\0\0\0\x41\x04\0\0\x1c\0\0\0\0\0\0\0\x4a\x04\ >> \0\0\x1c\0\0\0\x80\0\0\0\0\0\0\0\0\0\0\x03\0\0\0\0\x0c\0\0\0\x10\0\0\0\x04\0\0\ >> \0\0\0\0\0\0\0\0\x02\x18\0\0\0\0\0\0\0\x01\0\0\x05\x08\0\0\0\x53\x04\0\0\x20\0\ >> \0\0\0\0\0\0\x56\x04\0\0\x0e\0\0\x04\x50\0\0\0\x5f\x04\0\0\x0c\0\0\0\0\0\0\0\ >> \x6c\x04\0\0\x0c\0\0\0\x20\0\0\0\x73\x04\0\0\x0c\0\0\0\x40\0\0\0\x78\x04\0\0\ >> \x0c\0\0\0\x60\0\0\0\x81\x04\0\0\x0c\0\0\0\x80\0\0\0\x86\x04\0\0\x0c\0\0\0\xa0\ >> \0\0\0\x8f\x04\0\0\x0c\0\0\0\xc0\0\0\0\x97\x04\0\0\x1c\0\0\0\xe0\0\0\0\x9f\x04\ >> \0\0\x0c\0\0\0\x60\x01\0\0\xa8\x04\0\0\x14\0\0\0\x80\x01\0\0\xb1\x04\0\0\x0c\0\ >> \0\0\xa0\x01\0\0\xb9\x04\0\0\x1c\0\0\0\xc0\x01\0\0\xc1\x04\0\0\x0c\0\0\0\x40\ >> \x02\0\0\xc7\x04\0\0\x0a\0\0\0\x60\x02\0\0\0\0\0\0\0\0\0\x02\x1f\0\0\0\xd8\x04\ >> \0\0\x21\0\0\x04\xc0\0\0\0\xe2\x04\0\0\x0c\0\0\0\0\0\0\0\xe6\x04\0\0\x0c\0\0\0\ >> \x20\0\0\0\x81\x04\0\0\x0c\0\0\0\x40\0\0\0\xef\x04\0\0\x0c\0\0\0\x60\0\0\0\x78\ >> \x04\0\0\x0c\0\0\0\x80\0\0\0\xfd\x04\0\0\x0c\0\0\0\xa0\0\0\0\x0a\x05\0\0\x0c\0\ >> \0\0\xc0\0\0\0\x13\x05\0\0\x0c\0\0\0\xe0\0\0\0\x86\x04\0\0\x0c\0\0\0\0\x01\0\0\ >> \x1e\x05\0\0\x0c\0\0\0\x20\x01\0\0\x2e\x05\0\0\x0c\0\0\0\x40\x01\0\0\x36\x05\0\ >> \0\x0c\0\0\0\x60\x01\0\0\x3f\x05\0\0\x22\0\0\0\x80\x01\0\0\x42\x05\0\0\x0c\0\0\ >> \0\x20\x02\0\0\x47\x05\0\0\x0c\0\0\0\x40\x02\0\0\x52\x05\0\0\x0c\0\0\0\x60\x02\ >> \0\0\x57\x05\0\0\x0c\0\0\0\x80\x02\0\0\x60\x05\0\0\x0c\0\0\0\xa0\x02\0\0\x6c\ >> \x04\0\0\x0c\0\0\0\xc0\x02\0\0\x68\x05\0\0\x0c\0\0\0\xe0\x02\0\0\x73\x05\0\0\ >> \x0c\0\0\0\0\x03\0\0\x7d\x05\0\0\x1c\0\0\0\x20\x03\0\0\x88\x05\0\0\x1c\0\0\0\ >> \xa0\x03\0\0\x92\x05\0\0\x0c\0\0\0\x20\x04\0\0\x9e\x05\0\0\x0c\0\0\0\x40\x04\0\ >> \0\xa9\x05\0\0\x0c\0\0\0\x60\x04\0\0\0\0\0\0\x17\0\0\0\x80\x04\0\0\xb3\x05\0\0\ >> \x0f\0\0\0\xc0\x04\0\0\xba\x05\0\0\x0c\0\0\0\0\x05\0\0\xc3\x05\0\0\x0c\0\0\0\ >> \x20\x05\0\0\0\0\0\0\x1e\0\0\0\x40\x05\0\0\xcc\x05\0\0\x0c\0\0\0\x80\x05\0\0\ >> \xd5\x05\0\0\x0f\0\0\0\xc0\x05\0\0\0\0\0\0\0\0\0\x03\0\0\0\0\x0c\0\0\0\x10\0\0\ >> \0\x05\0\0\0\0\0\0\0\0\0\0\x0a\x21\0\0\0\0\0\0\0\0\0\0\x02\0\0\0\0\0\0\0\0\x03\ >> \0\0\x04\x18\0\0\0\x73\x04\0\0\x27\0\0\0\0\0\0\0\xde\x05\0\0\x28\0\0\0\x40\0\0\ >> \0\xe2\x05\0\0\x29\0\0\0\x80\0\0\0\0\0\0\0\0\0\0\x03\0\0\0\0\x09\0\0\0\x10\0\0\ >> \0\x01\0\0\0\0\0\0\0\0\0\0\x02\x26\0\0\0\0\0\0\0\0\0\0\x02\x0c\0\0\0\0\0\0\0\0\ >> \0\0\x02\x03\0\0\0\0\0\0\0\0\0\0\x03\0\0\0\0\x13\0\0\0\x10\0\0\0\x12\0\0\0\0\0\ >> 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\x6f\0\x6e\x5f\x70\x72\x6f\x74\x6f\0\x73\x70\x6f\x72\x74\0\x64\x70\x6f\x72\x74\ >> \0\x66\x6c\x61\x67\x73\0\x66\x6c\x6f\x77\x5f\x6c\x61\x62\x65\x6c\0\x69\x70\x76\ >> \x34\x5f\x73\x72\x63\0\x69\x70\x76\x34\x5f\x64\x73\x74\0\x69\x70\x76\x36\x5f\ >> \x73\x72\x63\0\x69\x70\x76\x36\x5f\x64\x73\x74\0\x73\x6b\0\x62\x70\x66\x5f\x73\ >> \x6f\x63\x6b\0\x62\x6f\x75\x6e\x64\x5f\x64\x65\x76\x5f\x69\x66\0\x66\x61\x6d\ >> \x69\x6c\x79\0\x74\x79\x70\x65\0\x70\x72\x6f\x74\x6f\x63\x6f\x6c\0\x6d\x61\x72\ >> \x6b\0\x70\x72\x69\x6f\x72\x69\x74\x79\0\x73\x72\x63\x5f\x69\x70\x34\0\x73\x72\ >> \x63\x5f\x69\x70\x36\0\x73\x72\x63\x5f\x70\x6f\x72\x74\0\x64\x73\x74\x5f\x70\ >> \x6f\x72\x74\0\x64\x73\x74\x5f\x69\x70\x34\0\x64\x73\x74\x5f\x69\x70\x36\0\x73\ >> \x74\x61\x74\x65\0\x72\x78\x5f\x71\x75\x65\x75\x65\x5f\x6d\x61\x70\x70\x69\x6e\ >> \x67\0\x5f\x5f\x73\x6b\x5f\x62\x75\x66\x66\0\x6c\x65\x6e\0\x70\x6b\x74\x5f\x74\ >> \x79\x70\x65\0\x71\x75\x65\x75\x65\x5f\x6d\x61\x70\x70\x69\x6e\x67\0\x76\x6c\ >> \x61\x6e\x5f\x70\x72\x65\x73\x65\x6e\x74\0\x76\x6c\x61\x6e\x5f\x74\x63\x69\0\ >> \x76\x6c\x61\x6e\x5f\x70\x72\x6f\x74\x6f\0\x69\x6e\x67\x72\x65\x73\x73\x5f\x69\ >> \x66\x69\x6e\x64\x65\x78\0\x69\x66\x69\x6e\x64\x65\x78\0\x74\x63\x5f\x69\x6e\ >> \x64\x65\x78\0\x63\x62\0\x68\x61\x73\x68\0\x74\x63\x5f\x63\x6c\x61\x73\x73\x69\ >> \x64\0\x64\x61\x74\x61\0\x64\x61\x74\x61\x5f\x65\x6e\x64\0\x6e\x61\x70\x69\x5f\ >> \x69\x64\0\x72\x65\x6d\x6f\x74\x65\x5f\x69\x70\x34\0\x6c\x6f\x63\x61\x6c\x5f\ >> \x69\x70\x34\0\x72\x65\x6d\x6f\x74\x65\x5f\x69\x70\x36\0\x6c\x6f\x63\x61\x6c\ >> \x5f\x69\x70\x36\0\x72\x65\x6d\x6f\x74\x65\x5f\x70\x6f\x72\x74\0\x6c\x6f\x63\ >> \x61\x6c\x5f\x70\x6f\x72\x74\0\x64\x61\x74\x61\x5f\x6d\x65\x74\x61\0\x74\x73\ >> \x74\x61\x6d\x70\0\x77\x69\x72\x65\x5f\x6c\x65\x6e\0\x67\x73\x6f\x5f\x73\x65\ >> \x67\x73\0\x67\x73\x6f\x5f\x73\x69\x7a\x65\0\x68\x77\x74\x73\x74\x61\x6d\x70\0\ >> \x6b\x65\x79\0\x76\x61\x6c\x75\x65\0\x5f\x6c\x69\x63\x65\x6e\x73\x65\0\x69\x73\ >> \x5f\x61\x6c\x6c\x6f\x77\x5f\x6c\x69\x73\x74\0\x73\x64\x5f\x72\x65\x73\x74\x72\ >> \x69\x63\x74\x69\x66\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\ >> \x69\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x65\0\x72\x65\ >> \x73\x74\x72\x69\x63\x74\x5f\x6e\x65\x74\x77\x6f\x72\x6b\x5f\x69\x6e\x74\x65\ >> \x72\x66\x61\x63\x65\x73\x5f\x69\x6d\x70\x6c\0\x2e\x64\x61\x74\x61\0\x6c\x69\ >> \x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\x01\0\0\0\x03\0\0\0\x20\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x40\ >> \0\0\0\0\0\0\0\xe5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\x09\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x28\x01\0\0\0\0\0\0\ >> \x50\x01\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\x18\0\0\0\0\0\0\0\x11\ >> \0\0\0\x01\0\0\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x78\x02\0\0\0\0\0\0\x01\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x17\0\0\0\x08\0\0\ >> \0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x79\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x1c\0\0\0\x01\0\0\0\x06\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\x80\x02\0\0\0\0\0\0\xb8\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x2e\0\0\0\x01\0\0\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\x38\x03\0\0\0\0\0\0\xb8\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\x41\0\0\0\x01\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xf0\x03\ >> \0\0\0\0\0\0\x12\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\x49\0\0\0\x01\0\0\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\x04\0\0\0\0\0\0\ >> \x18\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x4f\0\0\0\ >> \x01\0\0\0\x30\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x20\x04\0\0\0\0\0\0\x31\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\xb3\0\0\0\x09\0\0\0\ >> \x40\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x58\x04\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x02\0\ >> \0\0\x05\0\0\0\x08\0\0\0\0\0\0\0\x10\0\0\0\0\0\0\0\xc9\0\0\0\x09\0\0\0\x40\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\x78\x04\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x02\0\0\0\x06\ >> \0\0\0\x08\0\0\0\0\0\0\0\x10\0\0\0\0\0\0\0\xe0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\x98\x04\0\0\0\0\0\0\x16\x0e\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0"; >> } >> >> #ifdef __cplusplus >> struct restrict_ifaces_bpf *restrict_ifaces_bpf::open(const struct >> bpf_object_open_opts *opts) { return >> restrict_ifaces_bpf__open_opts(opts); } >> struct restrict_ifaces_bpf *restrict_ifaces_bpf::open_and_load() { >> return restrict_ifaces_bpf__open_and_load(); } >> int restrict_ifaces_bpf::load(struct restrict_ifaces_bpf *skel) { >> return restrict_ifaces_bpf__load(skel); } >> int restrict_ifaces_bpf::attach(struct restrict_ifaces_bpf *skel) { >> return restrict_ifaces_bpf__attach(skel); } >> void restrict_ifaces_bpf::detach(struct restrict_ifaces_bpf *skel) { >> restrict_ifaces_bpf__detach(skel); } >> void restrict_ifaces_bpf::destroy(struct restrict_ifaces_bpf *skel) { >> restrict_ifaces_bpf__destroy(skel); } >> const void *restrict_ifaces_bpf::elf_bytes(size_t *sz) { return >> restrict_ifaces_bpf__elf_bytes(sz); } >> #endif /* __cplusplus */ >> >> __attribute__((unused)) static void >> restrict_ifaces_bpf__assert(struct restrict_ifaces_bpf *s >> __attribute__((unused))) >> { >> #ifdef __cplusplus >> #define _Static_assert static_assert >> #endif >> _Static_assert(sizeof(s->data->is_allow_list) == 1, "unexpected >> size of 'is_allow_list'"); >> #ifdef __cplusplus >> #undef _Static_assert >> #endif >> } >> >> #endif /* __RESTRICT_IFACES_BPF_SKEL_H__ */ >> >> Clang: >> $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >> --debug gen skeleton restrict-ifaces.bpf.o >> libbpf: loading object 'restrict_ifaces_bpf' from buffer >> libbpf: elf: section(2) .symtab, size 384, link 1, flags 0, type=2 >> libbpf: elf: section(3) cgroup_skb/egress, size 152, link 0, flags 6, type=1 >> libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' at >> insn offset 0 (0 bytes), code size 19 insns (152 bytes) >> libbpf: elf: section(4) cgroup_skb/ingress, size 152, link 0, flags 6, type=1 >> libbpf: sec 'cgroup_skb/ingress': found program 'sd_restrictif_i' at >> insn offset 0 (0 bytes), code size 19 insns (152 bytes) >> libbpf: elf: section(5) .rodata, size 1, link 0, flags 2, type=1 >> libbpf: elf: section(6) license, size 18, link 0, flags 2, type=1 >> libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >> libbpf: elf: section(7) .maps, size 24, link 0, flags 3, type=1 >> libbpf: elf: section(8) .relcgroup_skb/egress, size 32, link 2, flags 40, type=9 >> libbpf: elf: section(9) .relcgroup_skb/ingress, size 32, link 2, flags >> 40, type=9 >> libbpf: elf: section(10) .BTF, size 1988, link 0, flags 0, type=1 >> libbpf: elf: section(11) .BTF.ext, size 376, link 0, flags 0, type=1 >> libbpf: looking for externs among 16 symbols... >> libbpf: collected 0 externs total >> libbpf: map 'sd_restrictif': at sec_idx 7, offset 0. >> libbpf: map 'sd_restrictif': found type = 1. >> libbpf: map 'sd_restrictif': found key [6], sz = 4. >> libbpf: map 'sd_restrictif': found value [9], sz = 1. >> libbpf: map 'restrict.rodata' (global data): at sec_idx 5, offset 0, flags 480. >> libbpf: map 1 is "restrict.rodata" >> libbpf: sec '.relcgroup_skb/egress': collecting relocation for >> section(3) 'cgroup_skb/egress' >> libbpf: sec '.relcgroup_skb/egress': relo #0: insn #4 against 'sd_restrictif' >> libbpf: prog 'sd_restrictif_e': found map 0 (sd_restrictif, sec 7, off >> 0) for insn #4 >> libbpf: sec '.relcgroup_skb/egress': relo #1: insn #7 against 'is_allow_list' >> libbpf: prog 'sd_restrictif_e': found data map 1 (restrict.rodata, sec >> 5, off 0) for insn 7 >> libbpf: sec '.relcgroup_skb/ingress': collecting relocation for >> section(4) 'cgroup_skb/ingress' >> libbpf: sec '.relcgroup_skb/ingress': relo #0: insn #4 against 'sd_restrictif' >> libbpf: prog 'sd_restrictif_i': found map 0 (sd_restrictif, sec 7, off >> 0) for insn #4 >> libbpf: sec '.relcgroup_skb/ingress': relo #1: insn #7 against 'is_allow_list' >> libbpf: prog 'sd_restrictif_i': found data map 1 (restrict.rodata, sec >> 5, off 0) for insn 7 >> /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ >> >> /* THIS FILE IS AUTOGENERATED BY BPFTOOL! */ >> #ifndef __RESTRICT_IFACES_BPF_SKEL_H__ >> #define __RESTRICT_IFACES_BPF_SKEL_H__ >> >> #include <errno.h> >> #include <stdlib.h> >> #include <bpf/libbpf.h> >> >> struct restrict_ifaces_bpf { >> struct bpf_object_skeleton *skeleton; >> struct bpf_object *obj; >> struct { >> struct bpf_map *sd_restrictif; >> struct bpf_map *rodata; >> } maps; >> struct { >> struct bpf_program *sd_restrictif_e; >> struct bpf_program *sd_restrictif_i; >> } progs; >> struct { >> struct bpf_link *sd_restrictif_e; >> struct bpf_link *sd_restrictif_i; >> } links; >> struct restrict_ifaces_bpf__rodata { >> __u8 is_allow_list; >> } *rodata; >> >> #ifdef __cplusplus >> static inline struct restrict_ifaces_bpf *open(const struct >> bpf_object_open_opts *opts = nullptr); >> static inline struct restrict_ifaces_bpf *open_and_load(); >> static inline int load(struct restrict_ifaces_bpf *skel); >> static inline int attach(struct restrict_ifaces_bpf *skel); >> static inline void detach(struct restrict_ifaces_bpf *skel); >> static inline void destroy(struct restrict_ifaces_bpf *skel); >> static inline const void *elf_bytes(size_t *sz); >> #endif /* __cplusplus */ >> }; >> >> static void >> restrict_ifaces_bpf__destroy(struct restrict_ifaces_bpf *obj) >> { >> if (!obj) >> return; >> if (obj->skeleton) >> bpf_object__destroy_skeleton(obj->skeleton); >> free(obj); >> } >> >> static inline int >> restrict_ifaces_bpf__create_skeleton(struct restrict_ifaces_bpf *obj); >> >> static inline struct restrict_ifaces_bpf * >> restrict_ifaces_bpf__open_opts(const struct bpf_object_open_opts *opts) >> { >> struct restrict_ifaces_bpf *obj; >> int err; >> >> obj = (struct restrict_ifaces_bpf *)calloc(1, sizeof(*obj)); >> if (!obj) { >> errno = ENOMEM; >> return NULL; >> } >> >> err = restrict_ifaces_bpf__create_skeleton(obj); >> if (err) >> goto err_out; >> >> err = bpf_object__open_skeleton(obj->skeleton, opts); >> if (err) >> goto err_out; >> >> return obj; >> err_out: >> restrict_ifaces_bpf__destroy(obj); >> errno = -err; >> return NULL; >> } >> >> static inline struct restrict_ifaces_bpf * >> restrict_ifaces_bpf__open(void) >> { >> return restrict_ifaces_bpf__open_opts(NULL); >> } >> >> static inline int >> restrict_ifaces_bpf__load(struct restrict_ifaces_bpf *obj) >> { >> return bpf_object__load_skeleton(obj->skeleton); >> } >> >> static inline struct restrict_ifaces_bpf * >> restrict_ifaces_bpf__open_and_load(void) >> { >> struct restrict_ifaces_bpf *obj; >> int err; >> >> obj = restrict_ifaces_bpf__open(); >> if (!obj) >> return NULL; >> err = restrict_ifaces_bpf__load(obj); >> if (err) { >> restrict_ifaces_bpf__destroy(obj); >> errno = -err; >> return NULL; >> } >> return obj; >> } >> >> static inline int >> restrict_ifaces_bpf__attach(struct restrict_ifaces_bpf *obj) >> { >> return bpf_object__attach_skeleton(obj->skeleton); >> } >> >> static inline void >> restrict_ifaces_bpf__detach(struct restrict_ifaces_bpf *obj) >> { >> return bpf_object__detach_skeleton(obj->skeleton); >> } >> >> static inline const void *restrict_ifaces_bpf__elf_bytes(size_t *sz); >> >> static inline int >> restrict_ifaces_bpf__create_skeleton(struct restrict_ifaces_bpf *obj) >> { >> struct bpf_object_skeleton *s; >> int err; >> >> s = (struct bpf_object_skeleton *)calloc(1, sizeof(*s)); >> if (!s) { >> err = -ENOMEM; >> goto err; >> } >> >> s->sz = sizeof(*s); >> s->name = "restrict_ifaces_bpf"; >> s->obj = &obj->obj; >> >> /* maps */ >> s->map_cnt = 2; >> s->map_skel_sz = sizeof(*s->maps); >> s->maps = (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_skel_sz); >> if (!s->maps) { >> err = -ENOMEM; >> goto err; >> } >> >> s->maps[0].name = "sd_restrictif"; >> s->maps[0].map = &obj->maps.sd_restrictif; >> >> s->maps[1].name = "restrict.rodata"; >> s->maps[1].map = &obj->maps.rodata; >> s->maps[1].mmaped = (void **)&obj->rodata; >> >> /* programs */ >> s->prog_cnt = 2; >> s->prog_skel_sz = sizeof(*s->progs); >> s->progs = (struct bpf_prog_skeleton *)calloc(s->prog_cnt, s->prog_skel_sz); >> if (!s->progs) { >> err = -ENOMEM; >> goto err; >> } >> >> s->progs[0].name = "sd_restrictif_e"; >> s->progs[0].prog = &obj->progs.sd_restrictif_e; >> s->progs[0].link = &obj->links.sd_restrictif_e; >> >> s->progs[1].name = "sd_restrictif_i"; >> s->progs[1].prog = &obj->progs.sd_restrictif_i; >> s->progs[1].link = &obj->links.sd_restrictif_i; >> >> s->data = (void *)restrict_ifaces_bpf__elf_bytes(&s->data_sz); >> >> obj->skeleton = s; >> return 0; >> err: >> bpf_object__destroy_skeleton(s); >> return err; >> } >> >> static inline const void *restrict_ifaces_bpf__elf_bytes(size_t *sz) >> { >> *sz = 4272; >> return (const void *)"\ >> \x7f\x45\x4c\x46\x02\x01\x01\0\0\0\0\0\0\0\0\0\x01\0\xf7\0\x01\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\xb0\x0d\0\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\x40\0\x0c\0\ >> \x01\0\0\x2e\x73\x74\x72\x74\x61\x62\0\x2e\x73\x79\x6d\x74\x61\x62\0\x63\x67\ >> \x72\x6f\x75\x70\x5f\x73\x6b\x62\x2f\x65\x67\x72\x65\x73\x73\0\x63\x67\x72\x6f\ >> \x75\x70\x5f\x73\x6b\x62\x2f\x69\x6e\x67\x72\x65\x73\x73\0\x2e\x72\x6f\x64\x61\ >> \x74\x61\0\x6c\x69\x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\x72\x65\x73\x74\ >> \x72\x69\x63\x74\x2d\x69\x66\x61\x63\x65\x73\x2e\x62\x70\x66\x2e\x63\0\x4c\x42\ >> \x42\x30\x5f\x32\0\x4c\x42\x42\x30\x5f\x33\0\x4c\x42\x42\x30\x5f\x34\0\x4c\x42\ >> \x42\x31\x5f\x32\0\x4c\x42\x42\x31\x5f\x33\0\x4c\x42\x42\x31\x5f\x34\0\x5f\x6c\ >> \x69\x63\x65\x6e\x73\x65\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\ >> \x5f\x65\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\0\x69\x73\x5f\ >> \x61\x6c\x6c\x6f\x77\x5f\x6c\x69\x73\x74\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\ >> \x63\x74\x69\x66\x5f\x69\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x70\x5f\x73\x6b\ >> \x62\x2f\x65\x67\x72\x65\x73\x73\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x70\x5f\ >> \x73\x6b\x62\x2f\x69\x6e\x67\x72\x65\x73\x73\0\x2e\x42\x54\x46\0\x2e\x42\x54\ >> \x46\x2e\x65\x78\x74\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \x4c\0\0\0\x04\0\xf1\xff\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x03\0\x03\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x62\0\0\0\0\0\x03\0\x70\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\x69\0\0\0\0\0\x03\0\x80\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x70\0\0\0\0\0\x03\ >> \0\x88\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x03\0\x04\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\x77\0\0\0\0\0\x04\0\x70\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x7e\0\0\0\0\0\ >> \x04\0\x80\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x85\0\0\0\0\0\x04\0\x88\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\x8c\0\0\0\x01\0\x06\0\0\0\0\0\0\0\0\0\x12\0\0\0\0\0\0\0\0\0\0\ >> \0\x03\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x95\0\0\0\x12\0\x03\0\0\0\0\0\0\ >> \0\0\0\x98\0\0\0\0\0\0\0\xa5\0\0\0\x11\0\x07\0\0\0\0\0\0\0\0\0\x18\0\0\0\0\0\0\ >> \0\xb3\0\0\0\x11\0\x05\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\xc1\0\0\0\x12\0\x04\ >> \0\0\0\0\0\0\0\0\0\x98\0\0\0\0\0\0\0\x61\x11\x28\0\0\0\0\0\x63\x1a\xfc\xff\0\0\ >> \0\0\xbf\xa2\0\0\0\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\x85\0\0\0\x01\0\0\0\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x71\x11\0\0\ >> \0\0\0\0\x15\x01\x03\0\0\0\0\0\xb7\x01\0\0\x01\0\0\0\x15\0\x03\0\0\0\0\0\x05\0\ >> \x03\0\0\0\0\0\xb7\x01\0\0\x01\0\0\0\x15\0\x01\0\0\0\0\0\xb7\x01\0\0\0\0\0\0\ >> \xbf\x10\0\0\0\0\0\0\x95\0\0\0\0\0\0\0\x61\x11\x28\0\0\0\0\0\x63\x1a\xfc\xff\0\ >> \0\0\0\xbf\xa2\0\0\0\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\x85\0\0\0\x01\0\0\0\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x71\x11\0\ >> \0\0\0\0\0\x15\x01\x03\0\0\0\0\0\xb7\x01\0\0\x01\0\0\0\x15\0\x03\0\0\0\0\0\x05\ >> \0\x03\0\0\0\0\0\xb7\x01\0\0\x01\0\0\0\x15\0\x01\0\0\0\0\0\xb7\x01\0\0\0\0\0\0\ >> \xbf\x10\0\0\0\0\0\0\x95\0\0\0\0\0\0\0\0\x4c\x47\x50\x4c\x2d\x32\x2e\x31\x2d\ >> \x6f\x72\x2d\x6c\x61\x74\x65\x72\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x01\0\0\0\x0d\0\0\0\x38\0\0\0\0\0\0\0\x01\0\0\ >> \0\x0e\0\0\0\x20\0\0\0\0\0\0\0\x01\0\0\0\x0d\0\0\0\x38\0\0\0\0\0\0\0\x01\0\0\0\ >> \x0e\0\0\0\x9f\xeb\x01\0\x18\0\0\0\0\0\0\0\x10\x04\0\0\x10\x04\0\0\x9c\x03\0\0\ >> \0\0\0\0\0\0\0\x02\x03\0\0\0\x01\0\0\0\0\0\0\x01\x04\0\0\0\x20\0\0\x01\0\0\0\0\ >> \0\0\0\x03\0\0\0\0\x02\0\0\0\x04\0\0\0\x01\0\0\0\x05\0\0\0\0\0\0\x01\x04\0\0\0\ >> \x20\0\0\0\0\0\0\0\0\0\0\x02\x06\0\0\0\x19\0\0\0\0\0\0\x08\x07\0\0\0\x1f\0\0\0\ >> \0\0\0\x01\x04\0\0\0\x20\0\0\0\0\0\0\0\0\0\0\x02\x09\0\0\0\x2c\0\0\0\0\0\0\x08\ >> \x0a\0\0\0\x31\0\0\0\0\0\0\x01\x01\0\0\0\x08\0\0\0\0\0\0\0\x03\0\0\x04\x18\0\0\ >> \0\x3f\0\0\0\x01\0\0\0\0\0\0\0\x44\0\0\0\x05\0\0\0\x40\0\0\0\x48\0\0\0\x08\0\0\ >> \0\x80\0\0\0\x4e\0\0\0\0\0\0\x0e\x0b\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\x02\x0e\0\0\ >> \0\0\0\0\0\0\0\0\x0a\x0f\0\0\0\x5c\0\0\0\x21\0\0\x04\xc0\0\0\0\x66\0\0\0\x06\0\ >> \0\0\0\0\0\0\x6a\0\0\0\x06\0\0\0\x20\0\0\0\x73\0\0\0\x06\0\0\0\x40\0\0\0\x78\0\ >> \0\0\x06\0\0\0\x60\0\0\0\x86\0\0\0\x06\0\0\0\x80\0\0\0\x8f\0\0\0\x06\0\0\0\xa0\ >> \0\0\0\x9c\0\0\0\x06\0\0\0\xc0\0\0\0\xa5\0\0\0\x06\0\0\0\xe0\0\0\0\xb0\0\0\0\ >> \x06\0\0\0\0\x01\0\0\xb9\0\0\0\x06\0\0\0\x20\x01\0\0\xc9\0\0\0\x06\0\0\0\x40\ >> \x01\0\0\xd1\0\0\0\x06\0\0\0\x60\x01\0\0\xda\0\0\0\x10\0\0\0\x80\x01\0\0\xdd\0\ >> \0\0\x06\0\0\0\x20\x02\0\0\xe2\0\0\0\x06\0\0\0\x40\x02\0\0\xed\0\0\0\x06\0\0\0\ >> \x60\x02\0\0\xf2\0\0\0\x06\0\0\0\x80\x02\0\0\xfb\0\0\0\x06\0\0\0\xa0\x02\0\0\ >> \x03\x01\0\0\x06\0\0\0\xc0\x02\0\0\x0a\x01\0\0\x06\0\0\0\xe0\x02\0\0\x15\x01\0\ >> \0\x06\0\0\0\0\x03\0\0\x1f\x01\0\0\x11\0\0\0\x20\x03\0\0\x2a\x01\0\0\x11\0\0\0\ >> \xa0\x03\0\0\x34\x01\0\0\x06\0\0\0\x20\x04\0\0\x40\x01\0\0\x06\0\0\0\x40\x04\0\ >> \0\x4b\x01\0\0\x06\0\0\0\x60\x04\0\0\0\0\0\0\x12\0\0\0\x80\x04\0\0\x55\x01\0\0\ >> \x14\0\0\0\xc0\x04\0\0\x5c\x01\0\0\x06\0\0\0\0\x05\0\0\x65\x01\0\0\x06\0\0\0\ >> \x20\x05\0\0\0\0\0\0\x16\0\0\0\x40\x05\0\0\x6e\x01\0\0\x06\0\0\0\x80\x05\0\0\ >> \x77\x01\0\0\x14\0\0\0\xc0\x05\0\0\0\0\0\0\0\0\0\x03\0\0\0\0\x06\0\0\0\x04\0\0\ >> \0\x05\0\0\0\0\0\0\0\0\0\0\x03\0\0\0\0\x06\0\0\0\x04\0\0\0\x04\0\0\0\0\0\0\0\ >> \x01\0\0\x05\x08\0\0\0\x80\x01\0\0\x13\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x02\x22\0\0\ >> \0\x8a\x01\0\0\0\0\0\x08\x15\0\0\0\x90\x01\0\0\0\0\0\x01\x08\0\0\0\x40\0\0\0\0\ >> \0\0\0\x01\0\0\x05\x08\0\0\0\xa3\x01\0\0\x17\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x02\ >> \x23\0\0\0\0\0\0\0\x01\0\0\x0d\x02\0\0\0\xa3\x01\0\0\x0d\0\0\0\xa6\x01\0\0\x01\ >> \0\0\x0c\x18\0\0\0\xb6\x01\0\0\x01\0\0\x0c\x18\0\0\0\0\0\0\0\0\0\0\x0a\x1c\0\0\ >> \0\0\0\0\0\0\0\0\x09\x09\0\0\0\xc6\x01\0\0\0\0\0\x0e\x1b\0\0\0\x01\0\0\0\0\0\0\ >> \0\0\0\0\x0a\x1f\0\0\0\xd4\x01\0\0\0\0\0\x01\x01\0\0\0\x08\0\0\x01\0\0\0\0\0\0\ >> \0\x03\0\0\0\0\x1e\0\0\0\x04\0\0\0\x12\0\0\0\xd9\x01\0\0\0\0\0\x0e\x20\0\0\0\0\ >> \0\0\0\xe2\x01\0\0\0\0\0\x07\0\0\0\0\xf0\x01\0\0\0\0\0\x07\0\0\0\0\x61\x03\0\0\ >> \x01\0\0\x0f\x01\0\0\0\x1d\0\0\0\0\0\0\0\x01\0\0\0\x69\x03\0\0\x01\0\0\x0f\x12\ >> \0\0\0\x21\0\0\0\0\0\0\0\x12\0\0\0\x71\x03\0\0\x01\0\0\x0f\x18\0\0\0\x0c\0\0\0\ >> \0\0\0\0\x18\0\0\0\0\x69\x6e\x74\0\x5f\x5f\x41\x52\x52\x41\x59\x5f\x53\x49\x5a\ >> \x45\x5f\x54\x59\x50\x45\x5f\x5f\0\x5f\x5f\x75\x33\x32\0\x75\x6e\x73\x69\x67\ >> \x6e\x65\x64\x20\x69\x6e\x74\0\x5f\x5f\x75\x38\0\x75\x6e\x73\x69\x67\x6e\x65\ >> \x64\x20\x63\x68\x61\x72\0\x74\x79\x70\x65\0\x6b\x65\x79\0\x76\x61\x6c\x75\x65\ >> \0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\0\x5f\x5f\x73\x6b\x5f\ >> \x62\x75\x66\x66\0\x6c\x65\x6e\0\x70\x6b\x74\x5f\x74\x79\x70\x65\0\x6d\x61\x72\ >> \x6b\0\x71\x75\x65\x75\x65\x5f\x6d\x61\x70\x70\x69\x6e\x67\0\x70\x72\x6f\x74\ >> \x6f\x63\x6f\x6c\0\x76\x6c\x61\x6e\x5f\x70\x72\x65\x73\x65\x6e\x74\0\x76\x6c\ >> \x61\x6e\x5f\x74\x63\x69\0\x76\x6c\x61\x6e\x5f\x70\x72\x6f\x74\x6f\0\x70\x72\ >> \x69\x6f\x72\x69\x74\x79\0\x69\x6e\x67\x72\x65\x73\x73\x5f\x69\x66\x69\x6e\x64\ >> \x65\x78\0\x69\x66\x69\x6e\x64\x65\x78\0\x74\x63\x5f\x69\x6e\x64\x65\x78\0\x63\ >> \x62\0\x68\x61\x73\x68\0\x74\x63\x5f\x63\x6c\x61\x73\x73\x69\x64\0\x64\x61\x74\ >> \x61\0\x64\x61\x74\x61\x5f\x65\x6e\x64\0\x6e\x61\x70\x69\x5f\x69\x64\0\x66\x61\ >> \x6d\x69\x6c\x79\0\x72\x65\x6d\x6f\x74\x65\x5f\x69\x70\x34\0\x6c\x6f\x63\x61\ >> \x6c\x5f\x69\x70\x34\0\x72\x65\x6d\x6f\x74\x65\x5f\x69\x70\x36\0\x6c\x6f\x63\ >> \x61\x6c\x5f\x69\x70\x36\0\x72\x65\x6d\x6f\x74\x65\x5f\x70\x6f\x72\x74\0\x6c\ >> \x6f\x63\x61\x6c\x5f\x70\x6f\x72\x74\0\x64\x61\x74\x61\x5f\x6d\x65\x74\x61\0\ >> \x74\x73\x74\x61\x6d\x70\0\x77\x69\x72\x65\x5f\x6c\x65\x6e\0\x67\x73\x6f\x5f\ >> \x73\x65\x67\x73\0\x67\x73\x6f\x5f\x73\x69\x7a\x65\0\x68\x77\x74\x73\x74\x61\ >> 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\0\0\x62\x02\0\0\x17\x6c\0\0\x08\0\0\0\xf9\x01\0\0\x62\x02\0\0\x11\x6c\0\0\x18\ >> \0\0\0\xf9\x01\0\0\0\0\0\0\0\0\0\0\x20\0\0\0\xf9\x01\0\0\x81\x02\0\0\x19\x70\0\ >> \0\x38\0\0\0\xf9\x01\0\0\xc8\x02\0\0\x0d\x74\0\0\x50\0\0\0\xf9\x01\0\0\xc8\x02\ >> \0\0\x0d\x74\0\0\x60\0\0\0\xf9\x01\0\0\xe5\x02\0\0\x15\x7c\0\0\x78\0\0\0\xf9\ >> \x01\0\0\x08\x03\0\0\x15\x8c\0\0\x88\0\0\0\xf9\x01\0\0\x2c\x03\0\0\x09\xc4\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\x03\0\0\0\x20\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\0\0\x0c\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x09\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\x50\x01\0\0\0\0\0\0\x80\x01\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\x08\0\0\0\ >> \0\0\0\0\x18\0\0\0\0\0\0\0\x11\0\0\0\x01\0\0\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\xd0\x02\0\0\0\0\0\0\x98\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\x23\0\0\0\x01\0\0\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x68\x03\0\0\ >> \0\0\0\0\x98\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \x36\0\0\0\x01\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x04\0\0\0\0\0\0\x01\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x3e\0\0\0\x01\0\ >> \0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\x04\0\0\0\0\0\0\x12\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x46\0\0\0\x01\0\0\0\x03\0\0\0\ >> \0\0\0\0\0\0\0\0\0\0\0\0\x18\x04\0\0\0\0\0\0\x18\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \x08\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xd1\0\0\0\x09\0\0\0\x40\0\0\0\0\0\0\0\0\0\0\ >> \0\0\0\0\0\x30\x04\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x02\0\0\0\x03\0\0\0\x08\0\0\0\ >> \0\0\0\0\x10\0\0\0\0\0\0\0\xe7\0\0\0\x09\0\0\0\x40\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\x50\x04\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x02\0\0\0\x04\0\0\0\x08\0\0\0\0\0\0\0\ >> \x10\0\0\0\0\0\0\0\xfe\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x70\x04\ >> \0\0\0\0\0\0\xc4\x07\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\0\0\0\0\0\ >> \0\0\x03\x01\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x38\x0c\0\0\0\0\0\0\ >> \x78\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; >> } >> >> #ifdef __cplusplus >> struct restrict_ifaces_bpf *restrict_ifaces_bpf::open(const struct >> bpf_object_open_opts *opts) { return >> restrict_ifaces_bpf__open_opts(opts); } >> struct restrict_ifaces_bpf *restrict_ifaces_bpf::open_and_load() { >> return restrict_ifaces_bpf__open_and_load(); } >> int restrict_ifaces_bpf::load(struct restrict_ifaces_bpf *skel) { >> return restrict_ifaces_bpf__load(skel); } >> int restrict_ifaces_bpf::attach(struct restrict_ifaces_bpf *skel) { >> return restrict_ifaces_bpf__attach(skel); } >> void restrict_ifaces_bpf::detach(struct restrict_ifaces_bpf *skel) { >> restrict_ifaces_bpf__detach(skel); } >> void restrict_ifaces_bpf::destroy(struct restrict_ifaces_bpf *skel) { >> restrict_ifaces_bpf__destroy(skel); } >> const void *restrict_ifaces_bpf::elf_bytes(size_t *sz) { return >> restrict_ifaces_bpf__elf_bytes(sz); } >> #endif /* __cplusplus */ >> >> __attribute__((unused)) static void >> restrict_ifaces_bpf__assert(struct restrict_ifaces_bpf *s >> __attribute__((unused))) >> { >> #ifdef __cplusplus >> #define _Static_assert static_assert >> #endif >> _Static_assert(sizeof(s->rodata->is_allow_list) == 1, "unexpected >> size of 'is_allow_list'"); >> #ifdef __cplusplus >> #undef _Static_assert >> #endif >> } >> >> #endif /* __RESTRICT_IFACES_BPF_SKEL_H__ */ >> >>> >>> >>> > Starting program: >>> > /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> > --debug gen skeleton >>> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> > [Thread debugging using libthread_db enabled] >>> > Using host libthread_db library "/usr/lib/libthread_db.so.1". >>> > libbpf: loading object 'restrict_ifaces_bpf' from buffer >>> > libbpf: elf: section(2) .symtab, size 336, link 1, flags 0, type=2 >>> > libbpf: elf: section(3) .data, size 1, link 0, flags 3, type=1 >>> > libbpf: elf: section(4) .bss, size 0, link 0, flags 3, type=8 >>> > libbpf: elf: section(5) cgroup_skb/egress, size 184, link 0, flags 6, type=1 >>> > libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' at >>> > insn offset 0 (0 bytes), code size 23 insns (184 bytes) >>> > libbpf: elf: section(6) cgroup_skb/ingress, size 184, link 0, flags 6, type=1 >>> > libbpf: sec 'cgroup_skb/ingress': found program 'sd_restrictif_i' at >>> > insn offset 0 (0 bytes), code size 23 insns (184 bytes) >>> > libbpf: elf: section(7) license, size 18, link 0, flags 2, type=1 >>> > libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >>> > libbpf: elf: section(8) .maps, size 24, link 0, flags 3, type=1 >>> > libbpf: elf: section(9) .comment, size 49, link 0, flags 30, type=1 >>> > libbpf: elf: skipping unrecognized data section(9) .comment >>> > libbpf: elf: section(10) .relcgroup_skb/egress, size 32, link 2, flags >>> > 40, type=9 >>> > libbpf: elf: section(11) .relcgroup_skb/ingress, size 32, link 2, >>> > flags 40, type=9 >>> > libbpf: elf: section(12) .BTF, size 3606, link 0, flags 0, type=1 >>> > libbpf: looking for externs among 14 symbols... >>> > libbpf: collected 0 externs total >>> > libbpf: map 'sd_restrictif': at sec_idx 8, offset 0. >>> > libbpf: map 'sd_restrictif': found type = 1. >>> > libbpf: map 'sd_restrictif': found key [12], sz = 4. >>> > libbpf: map 'sd_restrictif': found value [3], sz = 1. >>> > >>> > Program received signal SIGSEGV, Segmentation fault. >>> > 0x0000aaaaaab4fd2c in bpf_object.init_maps () >>> > (gdb) bt >>> > #0 0x0000aaaaaab4fd2c in bpf_object.init_maps () >>> > #1 0x0000aaaaaab52178 in bpf_object_open.part () >>> > #2 0x0000aaaaaab544e8 in bpf_object.open_mem () >>> > #3 0x0000aaaaaab2a58c in do_skeleton () >>> > #4 0x0000aaaaaab1e204 in main () >>> > >>> >> >>> >> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c >>> >> index e89cc9c885b3..e3a6808f0bb6 100644 >>> >> --- a/tools/lib/bpf/libbpf.c >>> >> +++ b/tools/lib/bpf/libbpf.c >>> >> @@ -1591,6 +1591,10 @@ static int > bpf_object__init_global_data_maps(struct bpf_object *obj) >>> >> for (sec_idx = 1; sec_idx < obj->efile.sec_cnt; sec_idx++) { >>> >> sec_desc = &obj->efile.secs[sec_idx]; >>> >> >>> >> + /* Skip empty sections. */ >>> >> + if (sec_desc->data->d_size == 0) >>> >> + continue; >>> >> + >>> >> switch (sec_desc->sec_type) { >>> >> case SEC_DATA: >>> >> sec_name = elf_sec_name(obj, elf_sec_by_idx(obj, sec_idx)); >>> >> >>> >> > GCC: >>> >> > $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> > --debug gen skeleton >>> >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> >> > libbpf: loading object 'restrict_ifaces_bpf' from buffer >>> >> > libbpf: elf: section(2) .symtab, size 336, link 1, flags 0, type=2 >>> >> > libbpf: elf: section(3) .data, size 1, link 0, flags 3, type=1 >>> >> > libbpf: elf: section(4) .bss, size 0, link 0, flags 3, type=8 >>> >> > libbpf: elf: section(5) cgroup_skb/egress, size 184, link 0, flags 6, type=1 >>> >> > libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' at >>> >> > insn offset 0 (0 bytes), code size 23 insns (184 bytes) >>> >> > libbpf: elf: section(6) cgroup_skb/ingress, size 184, link 0, flags 6, type=1 >>> >> > libbpf: sec 'cgroup_skb/ingress': found program 'sd_restrictif_i' at >>> >> > insn offset 0 (0 bytes), code size 23 insns (184 bytes) >>> >> > libbpf: elf: section(7) license, size 18, link 0, flags 2, type=1 >>> >> > libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >>> >> > libbpf: elf: section(8) .maps, size 24, link 0, flags 3, type=1 >>> >> > libbpf: elf: section(9) .comment, size 49, link 0, flags 30, type=1 >>> >> > libbpf: elf: skipping unrecognized data section(9) .comment >>> >> > libbpf: elf: section(10) .relcgroup_skb/egress, size 32, link 2, flags >>> >> > 40, type=9 >>> >> > libbpf: elf: section(11) .relcgroup_skb/ingress, size 32, link 2, >>> >> > flags 40, type=9 >>> >> > libbpf: elf: section(12) .BTF, size 3606, link 0, flags 0, type=1 >>> >> > libbpf: looking for externs among 14 symbols... >>> >> > libbpf: collected 0 externs total >>> >> > libbpf: map 'sd_restrictif': at sec_idx 8, offset 0. >>> >> > libbpf: map 'sd_restrictif': found type = 1. >>> >> > libbpf: map 'sd_restrictif': found key [12], sz = 4. >>> >> > libbpf: map 'sd_restrictif': found value [3], sz = 1. >>> >> > libbpf: map 'restrict.data' (global data): at sec_idx 3, offset 0, flags 400. >>> >> > libbpf: map 1 is "restrict.data" >>> >> > libbpf: map 'restrict.bss' (global data): at sec_idx 4, offset 0, flags 400. >>> >> > libbpf: failed to alloc map 'restrict.bss' content buffer: -22 >>> >> > Error: failed to open BPF object file: Invalid argument >>> >> > >>> >> > LLVM: >>> >> > $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> > --debug gen skeleton restrict-ifaces.bpf.o >>> >> > libbpf: loading object 'restrict_ifaces_bpf' from buffer >>> >> > libbpf: elf: section(2) .symtab, size 384, link 1, flags 0, type=2 >>> >> > libbpf: elf: section(3) cgroup_skb/egress, size 152, link 0, flags 6, type=1 >>> >> > libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' at >>> >> > insn offset 0 (0 bytes), code size 19 insns (152 bytes) >>> >> > libbpf: elf: section(4) cgroup_skb/ingress, size 152, link 0, flags 6, type=1 >>> >> > libbpf: sec 'cgroup_skb/ingress': found program 'sd_restrictif_i' at >>> >> > insn offset 0 (0 bytes), code size 19 insns (152 bytes) >>> >> > libbpf: elf: section(5) .rodata, size 1, link 0, flags 2, type=1 >>> >> > libbpf: elf: section(6) license, size 18, link 0, flags 2, type=1 >>> >> > libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >>> >> > libbpf: elf: section(7) .maps, size 24, link 0, flags 3, type=1 >>> >> > libbpf: elf: section(8) .relcgroup_skb/egress, size 32, link 2, flags 40, type=9 >>> >> > libbpf: elf: section(9) .relcgroup_skb/ingress, size 32, link 2, flags >>> >> > 40, type=9 >>> >> > libbpf: elf: section(10) .BTF, size 1988, link 0, flags 0, type=1 >>> >> > libbpf: elf: section(11) .BTF.ext, size 376, link 0, flags 0, type=1 >>> >> > libbpf: looking for externs among 16 symbols... >>> >> > libbpf: collected 0 externs total >>> >> > libbpf: map 'sd_restrictif': at sec_idx 7, offset 0. >>> >> > libbpf: map 'sd_restrictif': found type = 1. >>> >> > libbpf: map 'sd_restrictif': found key [6], sz = 4. >>> >> > libbpf: map 'sd_restrictif': found value [9], sz = 1. >>> >> > libbpf: map 'restrict.rodata' (global data): at sec_idx 5, offset 0, flags 480. >>> >> > libbpf: map 1 is "restrict.rodata" >>> >> > libbpf: sec '.relcgroup_skb/egress': collecting relocation for >>> >> > section(3) 'cgroup_skb/egress' >>> >> > libbpf: sec '.relcgroup_skb/egress': relo #0: insn #4 against 'sd_restrictif' >>> >> > libbpf: prog 'sd_restrictif_e': found map 0 (sd_restrictif, sec 7, off >>> >> > 0) for insn #4 >>> >> > libbpf: sec '.relcgroup_skb/egress': relo #1: insn #7 against 'is_allow_list' >>> >> > libbpf: prog 'sd_restrictif_e': found data map 1 (restrict.rodata, sec >>> >> > 5, off 0) for insn 7 >>> >> > libbpf: sec '.relcgroup_skb/ingress': collecting relocation for >>> >> > section(4) 'cgroup_skb/ingress' >>> >> > libbpf: sec '.relcgroup_skb/ingress': relo #0: insn #4 against 'sd_restrictif' >>> >> > libbpf: prog 'sd_restrictif_i': found map 0 (sd_restrictif, sec 7, off >>> >> > 0) for insn #4 >>> >> > libbpf: sec '.relcgroup_skb/ingress': relo #1: insn #7 against 'is_allow_list' >>> >> > libbpf: prog 'sd_restrictif_i': found data map 1 (restrict.rodata, sec >>> >> > 5, off 0) for insn 7 >>> >> > >>> >> >> > >>> >> >> > >> >>> >> >> > >> Looking at libbpf.c, it seems to me that this may be due of trying to >>> >> >> > >> mmap 0 bytes in `bpf_object__init_internal_map': >>> >> >> > >> >>> >> >> > >> map->mmaped = mmap(NULL, bpf_map_mmap_sz(map), PROT_READ | PROT_WRITE, >>> >> >> > >> MAP_SHARED | MAP_ANONYMOUS, -1, 0); >>> >> >> > >> if (map->mmaped == MAP_FAILED) { >>> >> >> > >> err = -errno; >>> >> >> > >> map->mmaped = NULL; >>> >> >> > >> pr_warn("failed to alloc map '%s' content buffer: %d\n", >>> >> >> > >> map->name, err); >>> >> >> > >> zfree(&map->real_name); >>> >> >> > >> zfree(&map->name); >>> >> >> > >> return err; >>> >> >> > >> } >>> >> >> > >> >>> >> >> > >> I see no check for zero sized sections in >>> >> >> > >> bpf_object__init_global_data_maps. >>> >> >> > >> >>> >> >> > >> Is maybe GCC failing to allocate stuff in BSS that is supposed to be >>> >> >> > >> there? >>> >> >> > >> >>> >> >> > >> > Stripped file passed to gen skeleton: >>> >> >> > >> > /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> >> > >> > btf dump file >>> >> >> > >> > > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.o >>> >> >> > >> > format raw >>> >> >> > >> > [1] INT 'signed char' size=1 bits_offset=0 nr_bits=8 encoding=UNKN >>> >> >> > >> > [2] INT 'unsigned char' size=1 bits_offset=0 nr_bits=8 encoding=CHAR >>> >> >> > >> > [3] TYPEDEF '__u8' type_id=2 >>> >> >> > >> > [4] CONST '(anon)' type_id=3 >>> >> >> > >> > [5] VOLATILE '(anon)' type_id=4 >>> >> >> > >> > [6] INT 'short int' size=2 bits_offset=0 nr_bits=16 encoding=SIGNED >>> >> >> > >> > [7] INT 'short unsigned int' size=2 bits_offset=0 nr_bits=16 encoding=(none) >>> >> >> > >> > [8] TYPEDEF '__u16' type_id=7 >>> >> >> > >> > [9] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED >>> >> >> > >> > [10] TYPEDEF '__s32' type_id=9 >>> >> >> > >> > [11] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none) >>> >> >> > >> > [12] TYPEDEF '__u32' type_id=11 >>> >> >> > >> > [13] INT 'long long int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED >>> >> >> > >> > [14] INT 'long long unsigned int' size=8 bits_offset=0 nr_bits=64 >>> >> >> > >> > encoding=(none) >>> >> >> > >> > [15] TYPEDEF '__u64' type_id=14 >>> >> >> > >> > [16] INT 'long unsigned int' size=8 bits_offset=0 nr_bits=64 encoding=(none) >>> >> >> > >> > [17] INT 'long int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED >>> >> >> > >> > [18] INT 'char' size=1 bits_offset=0 nr_bits=8 encoding=UNKN >>> >> >> > >> > [19] CONST '(anon)' type_id=18 >>> >> >> > >> > [20] TYPEDEF '__be16' type_id=8 >>> >> >> > >> > [21] TYPEDEF '__be32' type_id=12 >>> >> >> > >> > [22] ENUM 'bpf_map_type' encoding=UNSIGNED size=4 vlen=31 >>> >> >> > >> > 'BPF_MAP_TYPE_UNSPEC' val=0 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH' val=1 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY' val=2 >>> >> >> > >> > 'BPF_MAP_TYPE_PROG_ARRAY' val=3 >>> >> >> > >> > 'BPF_MAP_TYPE_PERF_EVENT_ARRAY' val=4 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_HASH' val=5 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_ARRAY' val=6 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK_TRACE' val=7 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_ARRAY' val=8 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_HASH' val=9 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_PERCPU_HASH' val=10 >>> >> >> > >> > 'BPF_MAP_TYPE_LPM_TRIE' val=11 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY_OF_MAPS' val=12 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH_OF_MAPS' val=13 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP' val=14 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKMAP' val=15 >>> >> >> > >> > 'BPF_MAP_TYPE_CPUMAP' val=16 >>> >> >> > >> > 'BPF_MAP_TYPE_XSKMAP' val=17 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKHASH' val=18 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_STORAGE' val=19 >>> >> >> > >> > 'BPF_MAP_TYPE_REUSEPORT_SOCKARRAY' val=20 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE' val=21 >>> >> >> > >> > 'BPF_MAP_TYPE_QUEUE' val=22 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK' val=23 >>> >> >> > >> > 'BPF_MAP_TYPE_SK_STORAGE' val=24 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP_HASH' val=25 >>> >> >> > >> > 'BPF_MAP_TYPE_STRUCT_OPS' val=26 >>> >> >> > >> > 'BPF_MAP_TYPE_RINGBUF' val=27 >>> >> >> > >> > 'BPF_MAP_TYPE_INODE_STORAGE' val=28 >>> >> >> > >> > 'BPF_MAP_TYPE_TASK_STORAGE' val=29 >>> >> >> > >> > 'BPF_MAP_TYPE_BLOOM_FILTER' val=30 >>> >> >> > >> > [23] UNION '(anon)' size=8 vlen=1 >>> >> >> > >> > 'flow_keys' type_id=29 bits_offset=0 >>> >> >> > >> > [24] STRUCT 'bpf_flow_keys' size=56 vlen=13 >>> >> >> > >> > 'nhoff' type_id=8 bits_offset=0 >>> >> >> > >> > 'thoff' type_id=8 bits_offset=16 >>> >> >> > >> > 'addr_proto' type_id=8 bits_offset=32 >>> >> >> > >> > 'is_frag' type_id=3 bits_offset=48 >>> >> >> > >> > 'is_first_frag' type_id=3 bits_offset=56 >>> >> >> > >> > 'is_encap' type_id=3 bits_offset=64 >>> >> >> > >> > 'ip_proto' type_id=3 bits_offset=72 >>> >> >> > >> > 'n_proto' type_id=20 bits_offset=80 >>> >> >> > >> > 'sport' type_id=20 bits_offset=96 >>> >> >> > >> > 'dport' type_id=20 bits_offset=112 >>> >> >> > >> > '(anon)' type_id=25 bits_offset=128 >>> >> >> > >> > 'flags' type_id=12 bits_offset=384 >>> >> >> > >> > 'flow_label' type_id=21 bits_offset=416 >>> >> >> > >> > [25] UNION '(anon)' size=32 vlen=2 >>> >> >> > >> > '(anon)' type_id=26 bits_offset=0 >>> >> >> > >> > '(anon)' type_id=27 bits_offset=0 >>> >> >> > >> > [26] STRUCT '(anon)' size=8 vlen=2 >>> >> >> > >> > 'ipv4_src' type_id=21 bits_offset=0 >>> >> >> > >> > 'ipv4_dst' type_id=21 bits_offset=32 >>> >> >> > >> > [27] STRUCT '(anon)' size=32 vlen=2 >>> >> >> > >> > 'ipv6_src' type_id=28 bits_offset=0 >>> >> >> > >> > 'ipv6_dst' type_id=28 bits_offset=128 >>> >> >> > >> > [28] ARRAY '(anon)' type_id=12 index_type_id=16 nr_elems=4 >>> >> >> > >> > [29] PTR '(anon)' type_id=24 >>> >> >> > >> > [30] UNION '(anon)' size=8 vlen=1 >>> >> >> > >> > 'sk' type_id=32 bits_offset=0 >>> >> >> > >> > [31] STRUCT 'bpf_sock' size=80 vlen=14 >>> >> >> > >> > 'bound_dev_if' type_id=12 bits_offset=0 >>> >> >> > >> > 'family' type_id=12 bits_offset=32 >>> >> >> > >> > 'type' type_id=12 bits_offset=64 >>> >> >> > >> > 'protocol' type_id=12 bits_offset=96 >>> >> >> > >> > 'mark' type_id=12 bits_offset=128 >>> >> >> > >> > 'priority' type_id=12 bits_offset=160 >>> >> >> > >> > 'src_ip4' type_id=12 bits_offset=192 >>> >> >> > >> > 'src_ip6' type_id=28 bits_offset=224 >>> >> >> > >> > 'src_port' type_id=12 bits_offset=352 >>> >> >> > >> > 'dst_port' type_id=20 bits_offset=384 >>> >> >> > >> > 'dst_ip4' type_id=12 bits_offset=416 >>> >> >> > >> > 'dst_ip6' type_id=28 bits_offset=448 >>> >> >> > >> > 'state' type_id=12 bits_offset=576 >>> >> >> > >> > 'rx_queue_mapping' type_id=10 bits_offset=608 >>> >> >> > >> > [32] PTR '(anon)' type_id=31 >>> >> >> > >> > [33] STRUCT '__sk_buff' size=192 vlen=33 >>> >> >> > >> > 'len' type_id=12 bits_offset=0 >>> >> >> > >> > 'pkt_type' type_id=12 bits_offset=32 >>> >> >> > >> > 'mark' type_id=12 bits_offset=64 >>> >> >> > >> > 'queue_mapping' type_id=12 bits_offset=96 >>> >> >> > >> > 'protocol' type_id=12 bits_offset=128 >>> >> >> > >> > 'vlan_present' type_id=12 bits_offset=160 >>> >> >> > >> > 'vlan_tci' type_id=12 bits_offset=192 >>> >> >> > >> > 'vlan_proto' type_id=12 bits_offset=224 >>> >> >> > >> > 'priority' type_id=12 bits_offset=256 >>> >> >> > >> > 'ingress_ifindex' type_id=12 bits_offset=288 >>> >> >> > >> > 'ifindex' type_id=12 bits_offset=320 >>> >> >> > >> > 'tc_index' type_id=12 bits_offset=352 >>> >> >> > >> > 'cb' type_id=34 bits_offset=384 >>> >> >> > >> > 'hash' type_id=12 bits_offset=544 >>> >> >> > >> > 'tc_classid' type_id=12 bits_offset=576 >>> >> >> > >> > 'data' type_id=12 bits_offset=608 >>> >> >> > >> > 'data_end' type_id=12 bits_offset=640 >>> >> >> > >> > 'napi_id' type_id=12 bits_offset=672 >>> >> >> > >> > 'family' type_id=12 bits_offset=704 >>> >> >> > >> > 'remote_ip4' type_id=12 bits_offset=736 >>> >> >> > >> > 'local_ip4' type_id=12 bits_offset=768 >>> >> >> > >> > 'remote_ip6' type_id=28 bits_offset=800 >>> >> >> > >> > 'local_ip6' type_id=28 bits_offset=928 >>> >> >> > >> > 'remote_port' type_id=12 bits_offset=1056 >>> >> >> > >> > 'local_port' type_id=12 bits_offset=1088 >>> >> >> > >> > 'data_meta' type_id=12 bits_offset=1120 >>> >> >> > >> > '(anon)' type_id=23 bits_offset=1152 >>> >> >> > >> > 'tstamp' type_id=15 bits_offset=1216 >>> >> >> > >> > 'wire_len' type_id=12 bits_offset=1280 >>> >> >> > >> > 'gso_segs' type_id=12 bits_offset=1312 >>> >> >> > >> > '(anon)' type_id=30 bits_offset=1344 >>> >> >> > >> > 'gso_size' type_id=12 bits_offset=1408 >>> >> >> > >> > 'hwtstamp' type_id=15 bits_offset=1472 >>> >> >> > >> > [34] ARRAY '(anon)' type_id=12 index_type_id=16 nr_elems=5 >>> >> >> > >> > [35] CONST '(anon)' type_id=33 >>> >> >> > >> > [36] PTR '(anon)' type_id=0 >>> >> >> > >> > [37] STRUCT '(anon)' size=24 vlen=3 >>> >> >> > >> > 'type' type_id=39 bits_offset=0 >>> >> >> > >> > 'key' type_id=40 bits_offset=64 >>> >> >> > >> > 'value' type_id=41 bits_offset=128 >>> >> >> > >> > [38] ARRAY '(anon)' type_id=9 index_type_id=16 nr_elems=1 >>> >> >> > >> > [39] PTR '(anon)' type_id=38 >>> >> >> > >> > [40] PTR '(anon)' type_id=12 >>> >> >> > >> > [41] PTR '(anon)' type_id=3 >>> >> >> > >> > [42] ARRAY '(anon)' type_id=19 index_type_id=16 nr_elems=18 >>> >> >> > >> > [43] CONST '(anon)' type_id=42 >>> >> >> > >> > [44] FUNC_PROTO '(anon)' ret_type_id=36 vlen=2 >>> >> >> > >> > '(anon)' type_id=36 >>> >> >> > >> > '(anon)' type_id=46 >>> >> >> > >> > [45] CONST '(anon)' type_id=0 >>> >> >> > >> > [46] PTR '(anon)' type_id=45 >>> >> >> > >> > [47] FUNC_PROTO '(anon)' ret_type_id=9 vlen=1 >>> >> >> > >> > 'sk' type_id=48 >>> >> >> > >> > [48] PTR '(anon)' type_id=35 >>> >> >> > >> > [49] VAR '_license' type_id=43, linkage=static >>> >> >> > >> > [50] VAR 'is_allow_list' type_id=5, linkage=global >>> >> >> > >> > [51] VAR 'sd_restrictif' type_id=37, linkage=global >>> >> >> > >> > [52] FUNC 'sd_restrictif_i' type_id=47 linkage=global >>> >> >> > >> > [53] FUNC 'sd_restrictif_e' type_id=47 linkage=global >>> >> >> > >> > [54] FUNC 'restrict_network_interfaces_impl' type_id=47 linkage=static >>> >> >> > >> > [55] DATASEC '.data' size=1 vlen=1 >>> >> >> > >> > type_id=50 offset=0 size=1 (VAR 'is_allow_list') >>> >> >> > >> > [56] DATASEC 'license' size=18 vlen=1 >>> >> >> > >> > type_id=49 offset=0 size=18 (VAR '_license') >>> >> >> > >> > [57] DATASEC '.maps' size=24 vlen=1 >>> >> >> > >> > type_id=51 offset=0 size=24 (VAR 'sd_restrictif') >>> >> >> > >> > >>> >> >> > >> > File before being stripped using bpftool gen object: >>> >> >> > >> > /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bpftool >>> >> >> > >> > btf dump file >>> >> >> > >> > >>> >> > >>> > > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.unstripped.o >>> >> >> > >> > format raw >>> >> >> > >> > [1] INT 'signed char' size=1 bits_offset=0 nr_bits=8 encoding=UNKN >>> >> >> > >> > [2] INT 'unsigned char' size=1 bits_offset=0 nr_bits=8 encoding=CHAR >>> >> >> > >> > [3] TYPEDEF '__u8' type_id=2 >>> >> >> > >> > [4] CONST '(anon)' type_id=3 >>> >> >> > >> > [5] VOLATILE '(anon)' type_id=4 >>> >> >> > >> > [6] INT 'short int' size=2 bits_offset=0 nr_bits=16 encoding=SIGNED >>> >> >> > >> > [7] INT 'short unsigned int' size=2 bits_offset=0 nr_bits=16 encoding=(none) >>> >> >> > >> > [8] TYPEDEF '__u16' type_id=7 >>> >> >> > >> > [9] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED >>> >> >> > >> > [10] TYPEDEF '__s32' type_id=9 >>> >> >> > >> > [11] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none) >>> >> >> > >> > [12] TYPEDEF '__u32' type_id=11 >>> >> >> > >> > [13] INT 'long long int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED >>> >> >> > >> > [14] INT 'long long unsigned int' size=8 bits_offset=0 nr_bits=64 >>> >> >> > >> > encoding=(none) >>> >> >> > >> > [15] TYPEDEF '__u64' type_id=14 >>> >> >> > >> > [16] INT 'long unsigned int' size=8 bits_offset=0 nr_bits=64 encoding=(none) >>> >> >> > >> > [17] INT 'long int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED >>> >> >> > >> > [18] INT 'char' size=1 bits_offset=0 nr_bits=8 encoding=UNKN >>> >> >> > >> > [19] CONST '(anon)' type_id=18 >>> >> >> > >> > [20] TYPEDEF '__be16' type_id=8 >>> >> >> > >> > [21] TYPEDEF '__be32' type_id=12 >>> >> >> > >> > [22] ENUM 'bpf_map_type' encoding=UNSIGNED size=4 vlen=31 >>> >> >> > >> > 'BPF_MAP_TYPE_UNSPEC' val=0 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH' val=1 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY' val=2 >>> >> >> > >> > 'BPF_MAP_TYPE_PROG_ARRAY' val=3 >>> >> >> > >> > 'BPF_MAP_TYPE_PERF_EVENT_ARRAY' val=4 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_HASH' val=5 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_ARRAY' val=6 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK_TRACE' val=7 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_ARRAY' val=8 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_HASH' val=9 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_PERCPU_HASH' val=10 >>> >> >> > >> > 'BPF_MAP_TYPE_LPM_TRIE' val=11 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY_OF_MAPS' val=12 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH_OF_MAPS' val=13 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP' val=14 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKMAP' val=15 >>> >> >> > >> > 'BPF_MAP_TYPE_CPUMAP' val=16 >>> >> >> > >> > 'BPF_MAP_TYPE_XSKMAP' val=17 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKHASH' val=18 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_STORAGE' val=19 >>> >> >> > >> > 'BPF_MAP_TYPE_REUSEPORT_SOCKARRAY' val=20 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE' val=21 >>> >> >> > >> > 'BPF_MAP_TYPE_QUEUE' val=22 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK' val=23 >>> >> >> > >> > 'BPF_MAP_TYPE_SK_STORAGE' val=24 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP_HASH' val=25 >>> >> >> > >> > 'BPF_MAP_TYPE_STRUCT_OPS' val=26 >>> >> >> > >> > 'BPF_MAP_TYPE_RINGBUF' val=27 >>> >> >> > >> > 'BPF_MAP_TYPE_INODE_STORAGE' val=28 >>> >> >> > >> > 'BPF_MAP_TYPE_TASK_STORAGE' val=29 >>> >> >> > >> > 'BPF_MAP_TYPE_BLOOM_FILTER' val=30 >>> >> >> > >> > [23] UNION '(anon)' size=8 vlen=1 >>> >> >> > >> > 'flow_keys' type_id=29 bits_offset=0 >>> >> >> > >> > [24] STRUCT 'bpf_flow_keys' size=56 vlen=13 >>> >> >> > >> > 'nhoff' type_id=8 bits_offset=0 >>> >> >> > >> > 'thoff' type_id=8 bits_offset=16 >>> >> >> > >> > 'addr_proto' type_id=8 bits_offset=32 >>> >> >> > >> > 'is_frag' type_id=3 bits_offset=48 >>> >> >> > >> > 'is_first_frag' type_id=3 bits_offset=56 >>> >> >> > >> > 'is_encap' type_id=3 bits_offset=64 >>> >> >> > >> > 'ip_proto' type_id=3 bits_offset=72 >>> >> >> > >> > 'n_proto' type_id=20 bits_offset=80 >>> >> >> > >> > 'sport' type_id=20 bits_offset=96 >>> >> >> > >> > 'dport' type_id=20 bits_offset=112 >>> >> >> > >> > '(anon)' type_id=25 bits_offset=128 >>> >> >> > >> > 'flags' type_id=12 bits_offset=384 >>> >> >> > >> > 'flow_label' type_id=21 bits_offset=416 >>> >> >> > >> > [25] UNION '(anon)' size=32 vlen=2 >>> >> >> > >> > '(anon)' type_id=26 bits_offset=0 >>> >> >> > >> > '(anon)' type_id=27 bits_offset=0 >>> >> >> > >> > [26] STRUCT '(anon)' size=8 vlen=2 >>> >> >> > >> > 'ipv4_src' type_id=21 bits_offset=0 >>> >> >> > >> > 'ipv4_dst' type_id=21 bits_offset=32 >>> >> >> > >> > [27] STRUCT '(anon)' size=32 vlen=2 >>> >> >> > >> > 'ipv6_src' type_id=28 bits_offset=0 >>> >> >> > >> > 'ipv6_dst' type_id=28 bits_offset=128 >>> >> >> > >> > [28] ARRAY '(anon)' type_id=12 index_type_id=16 nr_elems=4 >>> >> >> > >> > [29] PTR '(anon)' type_id=24 >>> >> >> > >> > [30] UNION '(anon)' size=8 vlen=1 >>> >> >> > >> > 'sk' type_id=32 bits_offset=0 >>> >> >> > >> > [31] STRUCT 'bpf_sock' size=80 vlen=14 >>> >> >> > >> > 'bound_dev_if' type_id=12 bits_offset=0 >>> >> >> > >> > 'family' type_id=12 bits_offset=32 >>> >> >> > >> > 'type' type_id=12 bits_offset=64 >>> >> >> > >> > 'protocol' type_id=12 bits_offset=96 >>> >> >> > >> > 'mark' type_id=12 bits_offset=128 >>> >> >> > >> > 'priority' type_id=12 bits_offset=160 >>> >> >> > >> > 'src_ip4' type_id=12 bits_offset=192 >>> >> >> > >> > 'src_ip6' type_id=28 bits_offset=224 >>> >> >> > >> > 'src_port' type_id=12 bits_offset=352 >>> >> >> > >> > 'dst_port' type_id=20 bits_offset=384 >>> >> >> > >> > 'dst_ip4' type_id=12 bits_offset=416 >>> >> >> > >> > 'dst_ip6' type_id=28 bits_offset=448 >>> >> >> > >> > 'state' type_id=12 bits_offset=576 >>> >> >> > >> > 'rx_queue_mapping' type_id=10 bits_offset=608 >>> >> >> > >> > [32] PTR '(anon)' type_id=31 >>> >> >> > >> > [33] STRUCT '__sk_buff' size=192 vlen=33 >>> >> >> > >> > 'len' type_id=12 bits_offset=0 >>> >> >> > >> > 'pkt_type' type_id=12 bits_offset=32 >>> >> >> > >> > 'mark' type_id=12 bits_offset=64 >>> >> >> > >> > 'queue_mapping' type_id=12 bits_offset=96 >>> >> >> > >> > 'protocol' type_id=12 bits_offset=128 >>> >> >> > >> > 'vlan_present' type_id=12 bits_offset=160 >>> >> >> > >> > 'vlan_tci' type_id=12 bits_offset=192 >>> >> >> > >> > 'vlan_proto' type_id=12 bits_offset=224 >>> >> >> > >> > 'priority' type_id=12 bits_offset=256 >>> >> >> > >> > 'ingress_ifindex' type_id=12 bits_offset=288 >>> >> >> > >> > 'ifindex' type_id=12 bits_offset=320 >>> >> >> > >> > 'tc_index' type_id=12 bits_offset=352 >>> >> >> > >> > 'cb' type_id=34 bits_offset=384 >>> >> >> > >> > 'hash' type_id=12 bits_offset=544 >>> >> >> > >> > 'tc_classid' type_id=12 bits_offset=576 >>> >> >> > >> > 'data' type_id=12 bits_offset=608 >>> >> >> > >> > 'data_end' type_id=12 bits_offset=640 >>> >> >> > >> > 'napi_id' type_id=12 bits_offset=672 >>> >> >> > >> > 'family' type_id=12 bits_offset=704 >>> >> >> > >> > 'remote_ip4' type_id=12 bits_offset=736 >>> >> >> > >> > 'local_ip4' type_id=12 bits_offset=768 >>> >> >> > >> > 'remote_ip6' type_id=28 bits_offset=800 >>> >> >> > >> > 'local_ip6' type_id=28 bits_offset=928 >>> >> >> > >> > 'remote_port' type_id=12 bits_offset=1056 >>> >> >> > >> > 'local_port' type_id=12 bits_offset=1088 >>> >> >> > >> > 'data_meta' type_id=12 bits_offset=1120 >>> >> >> > >> > '(anon)' type_id=23 bits_offset=1152 >>> >> >> > >> > 'tstamp' type_id=15 bits_offset=1216 >>> >> >> > >> > 'wire_len' type_id=12 bits_offset=1280 >>> >> >> > >> > 'gso_segs' type_id=12 bits_offset=1312 >>> >> >> > >> > '(anon)' type_id=30 bits_offset=1344 >>> >> >> > >> > 'gso_size' type_id=12 bits_offset=1408 >>> >> >> > >> > 'hwtstamp' type_id=15 bits_offset=1472 >>> >> >> > >> > [34] ARRAY '(anon)' type_id=12 index_type_id=16 nr_elems=5 >>> >> >> > >> > [35] CONST '(anon)' type_id=33 >>> >> >> > >> > [36] PTR '(anon)' type_id=0 >>> >> >> > >> > [37] STRUCT '(anon)' size=24 vlen=3 >>> >> >> > >> > 'type' type_id=39 bits_offset=0 >>> >> >> > >> > 'key' type_id=40 bits_offset=64 >>> >> >> > >> > 'value' type_id=41 bits_offset=128 >>> >> >> > >> > [38] ARRAY '(anon)' type_id=9 index_type_id=16 nr_elems=1 >>> >> >> > >> > [39] PTR '(anon)' type_id=38 >>> >> >> > >> > [40] PTR '(anon)' type_id=12 >>> >> >> > >> > [41] PTR '(anon)' type_id=3 >>> >> >> > >> > [42] ARRAY '(anon)' type_id=19 index_type_id=16 nr_elems=18 >>> >> >> > >> > [43] CONST '(anon)' type_id=42 >>> >> >> > >> > [44] FUNC_PROTO '(anon)' ret_type_id=36 vlen=2 >>> >> >> > >> > '(anon)' type_id=36 >>> >> >> > >> > '(anon)' type_id=46 >>> >> >> > >> > [45] CONST '(anon)' type_id=0 >>> >> >> > >> > [46] PTR '(anon)' type_id=45 >>> >> >> > >> > [47] FUNC_PROTO '(anon)' ret_type_id=9 vlen=1 >>> >> >> > >> > 'sk' type_id=48 >>> >> >> > >> > [48] PTR '(anon)' type_id=35 >>> >> >> > >> > [49] FUNC_PROTO '(anon)' ret_type_id=9 vlen=1 >>> >> >> > >> > 'sk' type_id=48 >>> >> >> > >> > [50] FUNC_PROTO '(anon)' ret_type_id=9 vlen=1 >>> >> >> > >> > 'sk' type_id=48 >>> >> >> > >> > [51] VAR '_license' type_id=43, linkage=static >>> >> >> > >> > [52] VAR 'is_allow_list' type_id=5, linkage=global >>> >> >> > >> > [53] VAR 'sd_restrictif' type_id=37, linkage=global >>> >> >> > >> > [54] FUNC 'bpf_map_lookup_elem' type_id=44 linkage=global >>> >> >> > >> > [55] FUNC 'sd_restrictif_i' type_id=47 linkage=global >>> >> >> > >> > [56] FUNC 'sd_restrictif_e' type_id=49 linkage=global >>> >> >> > >> > [57] FUNC 'restrict_network_interfaces_impl' type_id=50 linkage=static >>> >> >> > >> > [58] DATASEC 'license' size=0 vlen=1 >>> >> >> > >> > type_id=51 offset=0 size=18 (VAR '_license') >>> >> >> > >> > [59] DATASEC '.maps' size=0 vlen=1 >>> >> >> > >> > type_id=53 offset=0 size=24 (VAR 'sd_restrictif') >>> >> >> > >> > [60] DATASEC '.data' size=0 vlen=1 >>> >> >> > >> > type_id=52 offset=0 size=1 (VAR 'is_allow_list') >>> >> >> > >> > >>> >> >> > >> >> >>> >> >> > >> >> >> GCC is wrong, clearly. This function is global ([0]) and libbpf >>> >> >> > >> >> >> expects it to be marked as such in BTF. >>> >> >> > >> >> >> >>> >> >> > >> >> >> >>> >> >> > >> > >>> >> > >>> > > https://github.com/systemd/systemd/blob/main/src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.c#L42-L50 >>> >> >> > >> >> >> >>> >> >> > >> >> >> >>> >> >> > >> >> >>> GCC: >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> [1] INT 'signed char' size=1 bits_offset=0 nr_bits=8 encoding=UNKN >>> >> >> > >> >> >>> [2] INT 'unsigned char' size=1 bits_offset=0 nr_bits=8 encoding=CHAR >>> >> >> > >> >> >>> [3] TYPEDEF '__u8' type_id=2 >>> >> >> > >> >> >>> [4] CONST '(anon)' type_id=3 >>> >> >> > >> >> >> >>> >> >> > >> >> >> [...]
