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Marchesi" To: James Hilliard Cc: Andrii Nakryiko , bpf , david.faust@oracle.com Subject: Re: bpftool gen object doesn't handle GCC built BPF ELF files References: <87wncnd5dd.fsf@oracle.com> <8735fbcv3x.fsf@oracle.com> <87v8s65hdc.fsf@oracle.com> <8735fa3unq.fsf@oracle.com> <87tu7p3o4k.fsf@oracle.com> <87h73p1f5s.fsf@oracle.com> <87k08lunga.fsf@oracle.com> Date: Sun, 10 Jul 2022 21:49:17 +0200 In-Reply-To: <87k08lunga.fsf@oracle.com> (Jose E. 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Marchesi >> wrote: >>> >>> >>> > On Sat, Jul 9, 2022 at 4:41 PM Jose E. Marchesi >>> > wrote: >>> >> >>> >> >>> >> > On Sat, Jul 9, 2022 at 2:32 PM James Hilliard wrote: >>> >> >> >>> >> >> On Sat, Jul 9, 2022 at 2:21 PM Jose E. Marchesi >>> >> >> wrote: >>> >> >> > >>> >> >> > >>> >> >> > > On Sat, Jul 9, 2022 at 11:24 AM Jose E. Marchesi >>> >> >> > > wrote: >>> >> >> > >> >>> >> >> > >> >>> >> >> > >> > On Fri, Jul 8, 2022 at 12:33 PM Jose E. Marchesi >>> >> >> > >> > wrote: >>> >> >> > >> >> >>> >> >> > >> >> >>> >> >> > >> >> >> On Wed, Jul 6, 2022 at 10:13 AM James Hilliard >>> >> >> > >> >> >> wrote: >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> Note I'm testing with the following patches: >>> >> >> > >> >> >>> > https://lore.kernel.org/bpf/20220706111839.1247911-1-james.hilliard1@gmai= l.com/ >>> >> >> > >> >> >>> > https://lore.kernel.org/bpf/20220706140623.2917858-1-james.hilliard1@gmai= l.com/ >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> It would appear there's some compatibility issues wit= h 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-ifac= es.bpf.o >>> >> >> > >> >> >>> src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.unst= ripped.o >>> >> >> > >> >> >>> libbpf: failed to find BTF info for global/extern sym= bol 'sd_restrictif_i' >>> >> >> > >> >> >>> Error: failed to link >>> >> >> > >> >> >>> 'src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.uns= tripped.o': >>> >> >> > >> >> >>> Unknown error -2 (-2) >>> >> >> > >> >> >>> >>> >> >> > >> >> >>> Relevant difference seems to be this: >>> >> >> > >> >> >>> GCC: >>> >> >> > >> >> >>> [55] FUNC 'sd_restrictif_i' type_id=3D47 linkage=3Dst= atic >>> >> >> > >> >> >>> Clang: >>> >> >> > >> >> >>> [27] FUNC 'sd_restrictif_i' type_id=3D26 linkage=3Dgl= obal >>> >> >> > >> >> > >>> >> >> > >> >> > For functions GCC generates a BTF_KIND_FUNC entry, whic= h 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 t= o 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/59809= 0.html >>> >> >> > >> > >>> >> >> > >> > I applied that patch on top of GCC 12.1.0 and it appears t= o 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) .commen= t >>> >> >> > >> > 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? Tr= y with: >>> >> >> > >> >>> >> >> > >> $ size restrict-ifaces.bpf.o >>> >> >> > > >>> >> >> > > $ size >>> >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/res= trict-ifaces.bpf.o >>> >> >> > > text data bss dec hex filena= me >>> >> >> > > 386 25 0 411 19b >>> >> >> > > > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restrict-i= faces.bpf.o >>> >> >> > >>> >> >> > Right, so the .bss section is empty. I see a `const volatile u= nsigned >>> >> >> > char is_allow_list =3D 0;' in restrict-ifaces.bpf.c, but that g= oes 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 eventuali= ty... >>> >> >> >>> >> >> LLVM version(which skeleton generation works with): >>> >> >> $ size restrict-ifaces.bpf.o >>> >> >> text data bss dec hex filename >>> >> >> 323 24 0 347 15b restrict-i= faces.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=3D3 >>> >> >> [2] INT 'int' size=3D4 bits_offset=3D0 nr_bits=3D32 encoding=3DSI= GNED >>> >> >> [3] ARRAY '(anon)' type_id=3D2 index_type_id=3D4 nr_elems=3D1 >>> >> >> [4] INT '__ARRAY_SIZE_TYPE__' size=3D4 bits_offset=3D0 nr_bits=3D= 32 encoding=3D(none) >>> >> >> [5] PTR '(anon)' type_id=3D6 >>> >> >> [6] TYPEDEF '__u32' type_id=3D7 >>> >> >> [7] INT 'unsigned int' size=3D4 bits_offset=3D0 nr_bits=3D32 enco= ding=3D(none) >>> >> >> [8] PTR '(anon)' type_id=3D9 >>> >> >> [9] TYPEDEF '__u8' type_id=3D10 >>> >> >> [10] INT 'unsigned char' size=3D1 bits_offset=3D0 nr_bits=3D8 enc= oding=3D(none) >>> >> >> [11] STRUCT '(anon)' size=3D24 vlen=3D3 >>> >> >> 'type' type_id=3D1 bits_offset=3D0 >>> >> >> 'key' type_id=3D5 bits_offset=3D64 >>> >> >> 'value' type_id=3D8 bits_offset=3D128 >>> >> >> [12] VAR 'sd_restrictif' type_id=3D11, linkage=3Dglobal >>> >> >> [13] PTR '(anon)' type_id=3D14 >>> >> >> [14] CONST '(anon)' type_id=3D15 >>> >> >> [15] STRUCT '__sk_buff' size=3D192 vlen=3D33 >>> >> >> 'len' type_id=3D6 bits_offset=3D0 >>> >> >> 'pkt_type' type_id=3D6 bits_offset=3D32 >>> >> >> 'mark' type_id=3D6 bits_offset=3D64 >>> >> >> 'queue_mapping' type_id=3D6 bits_offset=3D96 >>> >> >> 'protocol' type_id=3D6 bits_offset=3D128 >>> >> >> 'vlan_present' type_id=3D6 bits_offset=3D160 >>> >> >> 'vlan_tci' type_id=3D6 bits_offset=3D192 >>> >> >> 'vlan_proto' type_id=3D6 bits_offset=3D224 >>> >> >> 'priority' type_id=3D6 bits_offset=3D256 >>> >> >> 'ingress_ifindex' type_id=3D6 bits_offset=3D288 >>> >> >> 'ifindex' type_id=3D6 bits_offset=3D320 >>> >> >> 'tc_index' type_id=3D6 bits_offset=3D352 >>> >> >> 'cb' type_id=3D16 bits_offset=3D384 >>> >> >> 'hash' type_id=3D6 bits_offset=3D544 >>> >> >> 'tc_classid' type_id=3D6 bits_offset=3D576 >>> >> >> 'data' type_id=3D6 bits_offset=3D608 >>> >> >> 'data_end' type_id=3D6 bits_offset=3D640 >>> >> >> 'napi_id' type_id=3D6 bits_offset=3D672 >>> >> >> 'family' type_id=3D6 bits_offset=3D704 >>> >> >> 'remote_ip4' type_id=3D6 bits_offset=3D736 >>> >> >> 'local_ip4' type_id=3D6 bits_offset=3D768 >>> >> >> 'remote_ip6' type_id=3D17 bits_offset=3D800 >>> >> >> 'local_ip6' type_id=3D17 bits_offset=3D928 >>> >> >> 'remote_port' type_id=3D6 bits_offset=3D1056 >>> >> >> 'local_port' type_id=3D6 bits_offset=3D1088 >>> >> >> 'data_meta' type_id=3D6 bits_offset=3D1120 >>> >> >> '(anon)' type_id=3D18 bits_offset=3D1152 >>> >> >> 'tstamp' type_id=3D20 bits_offset=3D1216 >>> >> >> 'wire_len' type_id=3D6 bits_offset=3D1280 >>> >> >> 'gso_segs' type_id=3D6 bits_offset=3D1312 >>> >> >> '(anon)' type_id=3D22 bits_offset=3D1344 >>> >> >> 'gso_size' type_id=3D6 bits_offset=3D1408 >>> >> >> 'hwtstamp' type_id=3D20 bits_offset=3D1472 >>> >> >> [16] ARRAY '(anon)' type_id=3D6 index_type_id=3D4 nr_elems=3D5 >>> >> >> [17] ARRAY '(anon)' type_id=3D6 index_type_id=3D4 nr_elems=3D4 >>> >> >> [18] UNION '(anon)' size=3D8 vlen=3D1 >>> >> >> 'flow_keys' type_id=3D19 bits_offset=3D0 >>> >> >> [19] PTR '(anon)' type_id=3D34 >>> >> >> [20] TYPEDEF '__u64' type_id=3D21 >>> >> >> [21] INT 'unsigned long long' size=3D8 bits_offset=3D0 nr_bits=3D= 64 encoding=3D(none) >>> >> >> [22] UNION '(anon)' size=3D8 vlen=3D1 >>> >> >> 'sk' type_id=3D23 bits_offset=3D0 >>> >> >> [23] PTR '(anon)' type_id=3D35 >>> >> >> [24] FUNC_PROTO '(anon)' ret_type_id=3D2 vlen=3D1 >>> >> >> 'sk' type_id=3D13 >>> >> >> [25] FUNC 'sd_restrictif_e' type_id=3D24 linkage=3Dglobal >>> >> >> [26] FUNC 'sd_restrictif_i' type_id=3D24 linkage=3Dglobal >>> >> >> [27] CONST '(anon)' type_id=3D28 >>> >> >> [28] VOLATILE '(anon)' type_id=3D9 >>> >> >> [29] VAR 'is_allow_list' type_id=3D27, linkage=3Dglobal >>> >> >> [30] CONST '(anon)' type_id=3D31 >>> >> >> [31] INT 'char' size=3D1 bits_offset=3D0 nr_bits=3D8 encoding=3DS= IGNED >>> >> >> [32] ARRAY '(anon)' type_id=3D30 index_type_id=3D4 nr_elems=3D18 >>> >> >> [33] VAR '_license' type_id=3D32, linkage=3Dstatic >>> >> >> [34] FWD 'bpf_flow_keys' fwd_kind=3Dstruct >>> >> >> [35] FWD 'bpf_sock' fwd_kind=3Dstruct >>> >> >> [36] DATASEC '.rodata' size=3D1 vlen=3D1 >>> >> >> type_id=3D29 offset=3D0 size=3D1 (VAR 'is_allow_list') >>> >> >> [37] DATASEC 'license' size=3D18 vlen=3D1 >>> >> >> type_id=3D33 offset=3D0 size=3D18 (VAR '_license') >>> >> >> [38] DATASEC '.maps' size=3D24 vlen=3D1 >>> >> >> type_id=3D12 offset=3D0 size=3D24 (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_map= s 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(str= uct bpf_object *obj) >>> for (sec_idx =3D 1; sec_idx < obj->efile.sec_cnt; sec_idx++) { >>> sec_desc =3D &obj->efile.secs[sec_idx]; >>> >>> + /* Skip recognized sections with size 0. */ >>> + if (sec_desc->data && sec_desc->data->d_size =3D=3D 0) >>> + continue; >>> + >>> switch (sec_desc->sec_type) { >>> case SEC_DATA: >>> sec_name =3D elf_sec_name(obj, elf_sec_by_idx(o= bj, sec_idx)); >> >> Ok, skeleton is now getting generated successfully, however it differs f= rom the >> clang version so there's a build error when we include/use the header: >> ../src/core/restrict-ifaces.c: In function =E2=80=98prepare_restrict_ifa= ces_bpf=E2=80=99: >> ../src/core/restrict-ifaces.c:45:14: error: =E2=80=98struct >> restrict_ifaces_bpf=E2=80=99 has no member named =E2=80=98rodata=E2=80= =99; did you mean >> =E2=80=98data=E2=80=99? >> 45 | obj->rodata->is_allow_list =3D 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 =3D 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=3D2 >> libbpf: elf: section(3) .data, size 1, link 0, flags 3, type=3D1 >> libbpf: elf: section(4) .bss, size 0, link 0, flags 3, type=3D8 >> libbpf: elf: section(5) cgroup_skb/egress, size 184, link 0, flags 6, ty= pe=3D1 >> 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, t= ype=3D1 >> 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=3D1 >> libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >> libbpf: elf: section(8) .maps, size 24, link 0, flags 3, type=3D1 >> libbpf: elf: section(9) .comment, size 49, link 0, flags 30, type=3D1 >> libbpf: elf: skipping unrecognized data section(9) .comment >> libbpf: elf: section(10) .relcgroup_skb/egress, size 32, link 2, flags >> 40, type=3D9 >> libbpf: elf: section(11) .relcgroup_skb/ingress, size 32, link 2, >> flags 40, type=3D9 >> libbpf: elf: section(12) .BTF, size 3606, link 0, flags 0, type=3D1 >> 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 =3D 1. >> libbpf: map 'sd_restrictif': found key [12], sz =3D 4. >> libbpf: map 'sd_restrictif': found value [3], sz =3D 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_restri= ctif' >> 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_restr= ictif' >> 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 >> #include >> #include >> >> 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 =3D 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 =3D (struct restrict_ifaces_bpf *)calloc(1, sizeof(*obj)); >> if (!obj) { >> errno =3D ENOMEM; >> return NULL; >> } >> >> err =3D restrict_ifaces_bpf__create_skeleton(obj); >> if (err) >> goto err_out; >> >> err =3D bpf_object__open_skeleton(obj->skeleton, opts); >> if (err) >> goto err_out; >> >> return obj; >> err_out: >> restrict_ifaces_bpf__destroy(obj); >> errno =3D -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 =3D restrict_ifaces_bpf__open(); >> if (!obj) >> return NULL; >> err =3D restrict_ifaces_bpf__load(obj); >> if (err) { >> restrict_ifaces_bpf__destroy(obj); >> errno =3D -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 =3D (struct bpf_object_skeleton *)calloc(1, sizeof(*s)); >> if (!s) { >> err =3D -ENOMEM; >> goto err; >> } >> >> s->sz =3D sizeof(*s); >> s->name =3D "restrict_ifaces_bpf"; >> s->obj =3D &obj->obj; >> >> /* maps */ >> s->map_cnt =3D 2; >> s->map_skel_sz =3D sizeof(*s->maps); >> s->maps =3D (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_ske= l_sz); >> if (!s->maps) { >> err =3D -ENOMEM; >> goto err; >> } >> >> s->maps[0].name =3D "sd_restrictif"; >> s->maps[0].map =3D &obj->maps.sd_restrictif; >> >> s->maps[1].name =3D "restrict.data"; >> s->maps[1].map =3D &obj->maps.data; >> s->maps[1].mmaped =3D (void **)&obj->data; >> >> /* programs */ >> s->prog_cnt =3D 2; >> s->prog_skel_sz =3D sizeof(*s->progs); >> s->progs =3D (struct bpf_prog_skeleton *)calloc(s->prog_cnt, s->prog= _skel_sz); >> if (!s->progs) { >> err =3D -ENOMEM; >> goto err; >> } >> >> s->progs[0].name =3D "sd_restrictif_e"; >> s->progs[0].prog =3D &obj->progs.sd_restrictif_e; >> s->progs[0].link =3D &obj->links.sd_restrictif_e; >> >> s->progs[1].name =3D "sd_restrictif_i"; >> s->progs[1].prog =3D &obj->progs.sd_restrictif_i; >> s->progs[1].link =3D &obj->links.sd_restrictif_i; >> >> s->data =3D (void *)restrict_ifaces_bpf__elf_bytes(&s->data_sz); >> >> obj->skeleton =3D s; >> return 0; >> err: >> bpf_object__destroy_skeleton(s); >> return err; >> } >> >> static inline const void *restrict_ifaces_bpf__elf_bytes(size_t *sz) >> { >> *sz =3D 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\x= 0d\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\x= 69\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\x= 66\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\x= 72\x65\ >> \x73\x74\x72\x69\x63\x74\x69\x66\0\x69\x73\x5f\x61\x6c\x6c\x6f\x77\x5f\x= 6c\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\x= 6e\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\x= 57\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\x= 20\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\x= 08\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\x= 08\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\x= 40\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\x= 1d\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\x= 80\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\x= 4a\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\x= 04\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\x= 9f\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\x= d8\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\x= 01\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\x= 0c\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\x= 60\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\x= 05\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\x= 10\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\x= 40\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\x= 10\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\ >> \0\0\0\0\0\x0a\x2a\0\0\0\0\0\0\0\x02\0\0\x0d\x24\0\0\0\0\0\0\0\x24\0\0\0= \0\0\0\ >> \0\x2e\0\0\0\0\0\0\0\0\0\0\x0a\0\0\0\0\0\0\0\0\0\0\0\x02\x2d\0\0\0\0\0\0= \0\x01\ >> \0\0\x0d\x09\0\0\0\x53\x04\0\0\x30\0\0\0\0\0\0\0\0\0\0\x02\x23\0\0\0\xe8= \x05\0\ >> \0\0\0\0\x0e\x2b\0\0\0\0\0\0\0\xf1\x05\0\0\0\0\0\x0e\x05\0\0\0\x01\0\0\0= \xff\ >> \x05\0\0\0\0\0\x0e\x25\0\0\0\x01\0\0\0\x0d\x06\0\0\x01\0\0\x0c\x2f\0\0\0= \x1d\ >> \x06\0\0\x01\0\0\x0c\x2f\0\0\0\x2d\x06\0\0\0\0\0\x0c\x2f\0\0\0\x4e\x06\0= \0\x01\ >> \0\0\x0f\x01\0\0\0\x32\0\0\0\0\0\0\0\x01\0\0\0\x54\x06\0\0\x01\0\0\x0f\x= 12\0\0\ >> \0\x31\0\0\0\0\0\0\0\x12\0\0\0\x5c\x06\0\0\x01\0\0\x0f\x18\0\0\0\x33\0\0= \0\0\0\ >> \0\0\x18\0\0\0\0\x73\x69\x67\x6e\x65\x64\x20\x63\x68\x61\x72\0\x75\x6e\x= 73\x69\ >> \x67\x6e\x65\x64\x20\x63\x68\x61\x72\0\x5f\x5f\x75\x38\0\x73\x68\x6f\x72= \x74\ >> \x20\x69\x6e\x74\0\x73\x68\x6f\x72\x74\x20\x75\x6e\x73\x69\x67\x6e\x65\x= 64\x20\ >> \x69\x6e\x74\0\x5f\x5f\x75\x31\x36\0\x69\x6e\x74\0\x5f\x5f\x73\x33\x32\0= \x75\ >> \x6e\x73\x69\x67\x6e\x65\x64\x20\x69\x6e\x74\0\x5f\x5f\x75\x33\x32\0\x6c= \x6f\ >> \x6e\x67\x20\x6c\x6f\x6e\x67\x20\x69\x6e\x74\0\x6c\x6f\x6e\x67\x20\x6c\x= 6f\x6e\ >> \x67\x20\x75\x6e\x73\x69\x67\x6e\x65\x64\x20\x69\x6e\x74\0\x5f\x5f\x75\x= 36\x34\ >> \0\x6c\x6f\x6e\x67\x20\x75\x6e\x73\x69\x67\x6e\x65\x64\x20\x69\x6e\x74\0= \x6c\ >> \x6f\x6e\x67\x20\x69\x6e\x74\0\x63\x68\x61\x72\0\x5f\x5f\x62\x65\x31\x36= \0\x5f\ >> \x5f\x62\x65\x33\x32\0\x62\x70\x66\x5f\x6d\x61\x70\x5f\x74\x79\x70\x65\0= \x42\ >> \x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x55\x4e\x53\x50\x45\x43= \0\x42\ >> \x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x48\x41\x53\x48\0\x42\x= 50\x46\ >> \x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x41\x52\x52\x41\x59\0\x42\x50\x= 46\x5f\ >> \x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x50\x52\x4f\x47\x5f\x41\x52\x52\x41= \x59\0\ >> \x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x50\x45\x52\x46\x5f= \x45\ >> \x56\x45\x4e\x54\x5f\x41\x52\x52\x41\x59\0\x42\x50\x46\x5f\x4d\x41\x50\x= 5f\x54\ >> \x59\x50\x45\x5f\x50\x45\x52\x43\x50\x55\x5f\x48\x41\x53\x48\0\x42\x50\x= 46\x5f\ >> \x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x50\x45\x52\x43\x50\x55\x5f\x41\x52= \x52\ >> \x41\x59\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x54\x= 41\x43\ >> \x4b\x5f\x54\x52\x41\x43\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x= 50\x45\ >> \x5f\x43\x47\x52\x4f\x55\x50\x5f\x41\x52\x52\x41\x59\0\x42\x50\x46\x5f\x= 4d\x41\ >> \x50\x5f\x54\x59\x50\x45\x5f\x4c\x52\x55\x5f\x48\x41\x53\x48\0\x42\x50\x= 46\x5f\ >> \x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x4c\x52\x55\x5f\x50\x45\x52\x43\x50= \x55\ >> \x5f\x48\x41\x53\x48\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x= 5f\x4c\ >> \x50\x4d\x5f\x54\x52\x49\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x= 50\x45\ >> \x5f\x41\x52\x52\x41\x59\x5f\x4f\x46\x5f\x4d\x41\x50\x53\0\x42\x50\x46\x= 5f\x4d\ >> \x41\x50\x5f\x54\x59\x50\x45\x5f\x48\x41\x53\x48\x5f\x4f\x46\x5f\x4d\x41= \x50\ >> \x53\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x44\x45\x56\x= 4d\x41\ >> \x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x4f\x43\x= 4b\x4d\ >> \x41\x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x43\x50\x= 55\x4d\ >> \x41\x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x58\x53\x= 4b\x4d\ >> \x41\x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x4f\x= 43\x4b\ >> \x48\x41\x53\x48\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x= 43\x47\ >> \x52\x4f\x55\x50\x5f\x53\x54\x4f\x52\x41\x47\x45\0\x42\x50\x46\x5f\x4d\x= 41\x50\ >> \x5f\x54\x59\x50\x45\x5f\x52\x45\x55\x53\x45\x50\x4f\x52\x54\x5f\x53\x4f= \x43\ >> \x4b\x41\x52\x52\x41\x59\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x= 45\x5f\ >> \x50\x45\x52\x43\x50\x55\x5f\x43\x47\x52\x4f\x55\x50\x5f\x53\x54\x4f\x52= \x41\ >> \x47\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x51\x55\x= 45\x55\ >> \x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x54\x41\x= 43\x4b\ >> \0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x4b\x5f\x53\x= 54\x4f\ >> \x52\x41\x47\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x= 44\x45\ >> \x56\x4d\x41\x50\x5f\x48\x41\x53\x48\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x= 54\x59\ >> \x50\x45\x5f\x53\x54\x52\x55\x43\x54\x5f\x4f\x50\x53\0\x42\x50\x46\x5f\x= 4d\x41\ >> \x50\x5f\x54\x59\x50\x45\x5f\x52\x49\x4e\x47\x42\x55\x46\0\x42\x50\x46\x= 5f\x4d\ >> \x41\x50\x5f\x54\x59\x50\x45\x5f\x49\x4e\x4f\x44\x45\x5f\x53\x54\x4f\x52= \x41\ >> \x47\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x54\x41\x= 53\x4b\ >> \x5f\x53\x54\x4f\x52\x41\x47\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x= 59\x50\ >> \x45\x5f\x42\x4c\x4f\x4f\x4d\x5f\x46\x49\x4c\x54\x45\x52\0\x66\x6c\x6f\x= 77\x5f\ >> \x6b\x65\x79\x73\0\x62\x70\x66\x5f\x66\x6c\x6f\x77\x5f\x6b\x65\x79\x73\0= \x6e\ >> \x68\x6f\x66\x66\0\x74\x68\x6f\x66\x66\0\x61\x64\x64\x72\x5f\x70\x72\x6f= \x74\ >> \x6f\0\x69\x73\x5f\x66\x72\x61\x67\0\x69\x73\x5f\x66\x69\x72\x73\x74\x5f= \x66\ >> \x72\x61\x67\0\x69\x73\x5f\x65\x6e\x63\x61\x70\0\x69\x70\x5f\x70\x72\x6f= \x74\ >> \x6f\0\x6e\x5f\x70\x72\x6f\x74\x6f\0\x73\x70\x6f\x72\x74\0\x64\x70\x6f\x= 72\x74\ >> \0\x66\x6c\x61\x67\x73\0\x66\x6c\x6f\x77\x5f\x6c\x61\x62\x65\x6c\0\x69\x= 70\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\x= 5f\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\x= 61\x72\ >> \x6b\0\x70\x72\x69\x6f\x72\x69\x74\x79\0\x73\x72\x63\x5f\x69\x70\x34\0\x= 73\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\x= 69\x6e\ >> \x67\0\x5f\x5f\x73\x6b\x5f\x62\x75\x66\x66\0\x6c\x65\x6e\0\x70\x6b\x74\x= 5f\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\x= 69\0\ >> \x76\x6c\x61\x6e\x5f\x70\x72\x6f\x74\x6f\0\x69\x6e\x67\x72\x65\x73\x73\x= 5f\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\x= 73\x69\ >> \x64\0\x64\x61\x74\x61\0\x64\x61\x74\x61\x5f\x65\x6e\x64\0\x6e\x61\x70\x= 69\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\x= 69\x73\ >> \x5f\x61\x6c\x6c\x6f\x77\x5f\x6c\x69\x73\x74\0\x73\x64\x5f\x72\x65\x73\x= 74\x72\ >> \x69\x63\x74\x69\x66\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x= 66\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\x= 01\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\x= 08\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\x= f0\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\x= 40\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) =3D=3D 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=3D2 >> libbpf: elf: section(3) cgroup_skb/egress, size 152, link 0, flags 6, ty= pe=3D1 >> 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, t= ype=3D1 >> 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=3D1 >> libbpf: elf: section(6) license, size 18, link 0, flags 2, type=3D1 >> libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >> libbpf: elf: section(7) .maps, size 24, link 0, flags 3, type=3D1 >> libbpf: elf: section(8) .relcgroup_skb/egress, size 32, link 2, flags 40= , type=3D9 >> libbpf: elf: section(9) .relcgroup_skb/ingress, size 32, link 2, flags >> 40, type=3D9 >> libbpf: elf: section(10) .BTF, size 1988, link 0, flags 0, type=3D1 >> libbpf: elf: section(11) .BTF.ext, size 376, link 0, flags 0, type=3D1 >> 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 =3D 1. >> libbpf: map 'sd_restrictif': found key [6], sz =3D 4. >> libbpf: map 'sd_restrictif': found value [9], sz =3D 1. >> libbpf: map 'restrict.rodata' (global data): at sec_idx 5, offset 0, fla= gs 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_restri= ctif' >> 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_restr= ictif' >> 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 >> #include >> #include >> >> 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 =3D 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 =3D (struct restrict_ifaces_bpf *)calloc(1, sizeof(*obj)); >> if (!obj) { >> errno =3D ENOMEM; >> return NULL; >> } >> >> err =3D restrict_ifaces_bpf__create_skeleton(obj); >> if (err) >> goto err_out; >> >> err =3D bpf_object__open_skeleton(obj->skeleton, opts); >> if (err) >> goto err_out; >> >> return obj; >> err_out: >> restrict_ifaces_bpf__destroy(obj); >> errno =3D -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 =3D restrict_ifaces_bpf__open(); >> if (!obj) >> return NULL; >> err =3D restrict_ifaces_bpf__load(obj); >> if (err) { >> restrict_ifaces_bpf__destroy(obj); >> errno =3D -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 =3D (struct bpf_object_skeleton *)calloc(1, sizeof(*s)); >> if (!s) { >> err =3D -ENOMEM; >> goto err; >> } >> >> s->sz =3D sizeof(*s); >> s->name =3D "restrict_ifaces_bpf"; >> s->obj =3D &obj->obj; >> >> /* maps */ >> s->map_cnt =3D 2; >> s->map_skel_sz =3D sizeof(*s->maps); >> s->maps =3D (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_ske= l_sz); >> if (!s->maps) { >> err =3D -ENOMEM; >> goto err; >> } >> >> s->maps[0].name =3D "sd_restrictif"; >> s->maps[0].map =3D &obj->maps.sd_restrictif; >> >> s->maps[1].name =3D "restrict.rodata"; >> s->maps[1].map =3D &obj->maps.rodata; >> s->maps[1].mmaped =3D (void **)&obj->rodata; >> >> /* programs */ >> s->prog_cnt =3D 2; >> s->prog_skel_sz =3D sizeof(*s->progs); >> s->progs =3D (struct bpf_prog_skeleton *)calloc(s->prog_cnt, s->prog= _skel_sz); >> if (!s->progs) { >> err =3D -ENOMEM; >> goto err; >> } >> >> s->progs[0].name =3D "sd_restrictif_e"; >> s->progs[0].prog =3D &obj->progs.sd_restrictif_e; >> s->progs[0].link =3D &obj->links.sd_restrictif_e; >> >> s->progs[1].name =3D "sd_restrictif_i"; >> s->progs[1].prog =3D &obj->progs.sd_restrictif_i; >> s->progs[1].link =3D &obj->links.sd_restrictif_i; >> >> s->data =3D (void *)restrict_ifaces_bpf__elf_bytes(&s->data_sz); >> >> obj->skeleton =3D s; >> return 0; >> err: >> bpf_object__destroy_skeleton(s); >> return err; >> } >> >> static inline const void *restrict_ifaces_bpf__elf_bytes(size_t *sz) >> { >> *sz =3D 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\x= 0c\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\x= 72\x6f\ >> \x75\x70\x5f\x73\x6b\x62\x2f\x69\x6e\x67\x72\x65\x73\x73\0\x2e\x72\x6f\x= 64\x61\ >> \x74\x61\0\x6c\x69\x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\x72\x65\x= 73\x74\ >> \x72\x69\x63\x74\x2d\x69\x66\x61\x63\x65\x73\x2e\x62\x70\x66\x2e\x63\0\x= 4c\x42\ >> \x42\x30\x5f\x32\0\x4c\x42\x42\x30\x5f\x33\0\x4c\x42\x42\x30\x5f\x34\0\x= 4c\x42\ >> \x42\x31\x5f\x32\0\x4c\x42\x42\x31\x5f\x33\0\x4c\x42\x42\x31\x5f\x34\0\x= 5f\x6c\ >> \x69\x63\x65\x6e\x73\x65\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x= 69\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\x= 72\x69\ >> \x63\x74\x69\x66\x5f\x69\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x70\x5f\x= 73\x6b\ >> \x62\x2f\x65\x67\x72\x65\x73\x73\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x= 70\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\x= 03\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\x= ff\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\x= 11\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\x= 01\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\x= 03\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\x= 18\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\x= 08\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\x= 0e\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\x= 01\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\x= 04\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\x= 22\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\x= 1c\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\x= 03\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\x= 0f\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\x= 49\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\x= 75\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\x= 61\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\x= 6e\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\x= 61\x74\ >> \x61\0\x64\x61\x74\x61\x5f\x65\x6e\x64\0\x6e\x61\x70\x69\x5f\x69\x64\0\x= 66\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\x= 61\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\x66\x6c\x6f\x77\x5f\x6b\x65\x79\x73\0\x5f\x5f\x75\x36\x34\0\x= 75\x6e\ >> \x73\x69\x67\x6e\x65\x64\x20\x6c\x6f\x6e\x67\x20\x6c\x6f\x6e\x67\0\x73\x= 6b\0\ >> \x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x65\0\x73\x64\x= 5f\x72\ >> \x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x69\0\x69\x73\x5f\x61\x6c\x6c\x= 6f\x77\ >> \x5f\x6c\x69\x73\x74\0\x63\x68\x61\x72\0\x5f\x6c\x69\x63\x65\x6e\x73\x65= \0\x62\ >> \x70\x66\x5f\x66\x6c\x6f\x77\x5f\x6b\x65\x79\x73\0\x62\x70\x66\x5f\x73\x= 6f\x63\ >> \x6b\0\x2f\x68\x6f\x6d\x65\x2f\x62\x75\x69\x6c\x64\x72\x6f\x6f\x74\x2f\x= 62\x75\ >> \x69\x6c\x64\x72\x6f\x6f\x74\x2f\x6f\x75\x74\x70\x75\x74\x2f\x62\x75\x69= \x6c\ >> \x64\x2f\x73\x79\x73\x74\x65\x6d\x64\x2d\x63\x75\x73\x74\x6f\x6d\x2f\x73= \x72\ >> \x63\x2f\x63\x6f\x72\x65\x2f\x62\x70\x66\x2f\x72\x65\x73\x74\x72\x69\x63= \x74\ >> \x5f\x69\x66\x61\x63\x65\x73\x2f\x72\x65\x73\x74\x72\x69\x63\x74\x2d\x69= \x66\ >> \x61\x63\x65\x73\x2e\x62\x70\x66\x2e\x63\0\x20\x20\x20\x20\x20\x20\x20\x= 20\x69\ >> \x66\x69\x6e\x64\x65\x78\x20\x3d\x20\x73\x6b\x2d\x3e\x69\x66\x69\x6e\x64= \x65\ >> \x78\x3b\0\x20\x20\x20\x20\x20\x20\x20\x20\x6c\x6f\x6f\x6b\x75\x70\x5f\x= 72\x65\ >> \x73\x75\x6c\x74\x20\x3d\x20\x62\x70\x66\x5f\x6d\x61\x70\x5f\x6c\x6f\x6f= \x6b\ >> \x75\x70\x5f\x65\x6c\x65\x6d\x28\x26\x73\x64\x5f\x72\x65\x73\x74\x72\x69= \x63\ >> \x74\x69\x66\x2c\x20\x26\x69\x66\x69\x6e\x64\x65\x78\x29\x3b\0\x20\x20\x= 20\x20\ >> \x20\x20\x20\x20\x69\x66\x20\x28\x69\x73\x5f\x61\x6c\x6c\x6f\x77\x5f\x6c= \x69\ >> \x73\x74\x29\x20\x7b\0\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x= 20\x20\ >> \x20\x20\x69\x66\x20\x28\x6c\x6f\x6f\x6b\x75\x70\x5f\x72\x65\x73\x75\x6c= \x74\ >> \x29\0\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x= 69\x66\ >> \x20\x28\x21\x6c\x6f\x6f\x6b\x75\x70\x5f\x72\x65\x73\x75\x6c\x74\x29\0\x= 20\x20\ >> \x20\x20\x20\x20\x20\x20\x72\x65\x74\x75\x72\x6e\x20\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\x28\x73\x6b\x29\x3b\0\x2e\x72\x6f\x64\x61\x= 74\x61\ >> \0\x6c\x69\x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\x63\x67\x72\x6f\x= 75\x70\ >> \x5f\x73\x6b\x62\x2f\x65\x67\x72\x65\x73\x73\0\x63\x67\x72\x6f\x75\x70\x= 5f\x73\ >> \x6b\x62\x2f\x69\x6e\x67\x72\x65\x73\x73\0\0\0\0\0\x9f\xeb\x01\0\x20\0\0= \0\0\0\ >> \0\0\x24\0\0\0\x24\0\0\0\x34\x01\0\0\x58\x01\0\0\0\0\0\0\x08\0\0\0\x77\x= 03\0\0\ >> \x01\0\0\0\0\0\0\0\x19\0\0\0\x89\x03\0\0\x01\0\0\0\0\0\0\0\x1a\0\0\0\x10= \0\0\0\ >> \x77\x03\0\0\x09\0\0\0\0\0\0\0\xf9\x01\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\xb0\0\0\x89\x03\0\0\x09\0\0\0\0\0\0\0\x= f9\x01\ >> \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\x= c8\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\x= c4\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\x= 20\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\x= 03\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\x= 70\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) =3D=3D 1, "unexpecte= d >> 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/bpftoo= l >>> > --debug gen skeleton >>> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restri= ct-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=3D2 >>> > libbpf: elf: section(3) .data, size 1, link 0, flags 3, type=3D1 >>> > libbpf: elf: section(4) .bss, size 0, link 0, flags 3, type=3D8 >>> > libbpf: elf: section(5) cgroup_skb/egress, size 184, link 0, flags 6,= type=3D1 >>> > 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=3D1 >>> > 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=3D1 >>> > libbpf: license of restrict_ifaces_bpf is LGPL-2.1-or-later >>> > libbpf: elf: section(8) .maps, size 24, link 0, flags 3, type=3D1 >>> > libbpf: elf: section(9) .comment, size 49, link 0, flags 30, type=3D1 >>> > libbpf: elf: skipping unrecognized data section(9) .comment >>> > libbpf: elf: section(10) .relcgroup_skb/egress, size 32, link 2, flag= s >>> > 40, type=3D9 >>> > libbpf: elf: section(11) .relcgroup_skb/ingress, size 32, link 2, >>> > flags 40, type=3D9 >>> > libbpf: elf: section(12) .BTF, size 3606, link 0, flags 0, type=3D1 >>> > 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 =3D 1. >>> > libbpf: map 'sd_restrictif': found key [12], sz =3D 4. >>> > libbpf: map 'sd_restrictif': found value [3], sz =3D 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 =3D 1; sec_idx < obj->efile.sec_cnt; sec_idx++)= { >>> >> sec_desc =3D &obj->efile.secs[sec_idx]; >>> >> >>> >> + /* Skip empty sections. */ >>> >> + if (sec_desc->data->d_size =3D=3D 0) >>> >> + continue; >>> >> + >>> >> switch (sec_desc->sec_type) { >>> >> case SEC_DATA: >>> >> sec_name =3D elf_sec_name(obj, elf_sec_by_id= x(obj, sec_idx)); >>> >> >>> >> > GCC: >>> >> > $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/b= pftool >>> >> > --debug gen skeleton >>> >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/res= trict-ifaces.bpf.o >>> >> > libbpf: loading object 'restrict_ifaces_bpf' from buffer >>> >> > libbpf: elf: section(2) .symtab, size 336, link 1, flags 0, type= =3D2 >>> >> > libbpf: elf: section(3) .data, size 1, link 0, flags 3, type=3D1 >>> >> > libbpf: elf: section(4) .bss, size 0, link 0, flags 3, type=3D8 >>> >> > libbpf: elf: section(5) cgroup_skb/egress, size 184, link 0, flags= 6, type=3D1 >>> >> > libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' a= t >>> >> > insn offset 0 (0 bytes), code size 23 insns (184 bytes) >>> >> > libbpf: elf: section(6) cgroup_skb/ingress, size 184, link 0, flag= s 6, type=3D1 >>> >> > 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=3D= 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=3D1 >>> >> > libbpf: elf: section(9) .comment, size 49, link 0, flags 30, type= =3D1 >>> >> > libbpf: elf: skipping unrecognized data section(9) .comment >>> >> > libbpf: elf: section(10) .relcgroup_skb/egress, size 32, link 2, f= lags >>> >> > 40, type=3D9 >>> >> > libbpf: elf: section(11) .relcgroup_skb/ingress, size 32, link 2, >>> >> > flags 40, type=3D9 >>> >> > libbpf: elf: section(12) .BTF, size 3606, link 0, flags 0, type=3D= 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 =3D 1. >>> >> > libbpf: map 'sd_restrictif': found key [12], sz =3D 4. >>> >> > libbpf: map 'sd_restrictif': found value [3], sz =3D 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/b= pftool >>> >> > --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= =3D2 >>> >> > libbpf: elf: section(3) cgroup_skb/egress, size 152, link 0, flags= 6, type=3D1 >>> >> > libbpf: sec 'cgroup_skb/egress': found program 'sd_restrictif_e' a= t >>> >> > insn offset 0 (0 bytes), code size 19 insns (152 bytes) >>> >> > libbpf: elf: section(4) cgroup_skb/ingress, size 152, link 0, flag= s 6, type=3D1 >>> >> > 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=3D1 >>> >> > libbpf: elf: section(6) license, size 18, link 0, flags 2, type=3D= 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=3D1 >>> >> > libbpf: elf: section(8) .relcgroup_skb/egress, size 32, link 2, fl= ags 40, type=3D9 >>> >> > libbpf: elf: section(9) .relcgroup_skb/ingress, size 32, link 2, f= lags >>> >> > 40, type=3D9 >>> >> > libbpf: elf: section(10) .BTF, size 1988, link 0, flags 0, type=3D= 1 >>> >> > libbpf: elf: section(11) .BTF.ext, size 376, link 0, flags 0, type= =3D1 >>> >> > 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 =3D 1. >>> >> > libbpf: map 'sd_restrictif': found key [6], sz =3D 4. >>> >> > libbpf: map 'sd_restrictif': found value [9], sz =3D 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 =3D mmap(NULL, bpf_map_mmap_sz(map), PRO= T_READ | PROT_WRITE, >>> >> >> > >> MAP_SHARED | MAP_ANONYMOUS, -1, 0= ); >>> >> >> > >> if (map->mmaped =3D=3D MAP_FAILED) { >>> >> >> > >> err =3D -errno; >>> >> >> > >> map->mmaped =3D NULL; >>> >> >> > >> pr_warn("failed to alloc map '%s' content bu= ffer: %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 suppos= ed 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-i= faces.bpf.o >>> >> >> > >> > format raw >>> >> >> > >> > [1] INT 'signed char' size=3D1 bits_offset=3D0 nr_bits=3D8= encoding=3DUNKN >>> >> >> > >> > [2] INT 'unsigned char' size=3D1 bits_offset=3D0 nr_bits= =3D8 encoding=3DCHAR >>> >> >> > >> > [3] TYPEDEF '__u8' type_id=3D2 >>> >> >> > >> > [4] CONST '(anon)' type_id=3D3 >>> >> >> > >> > [5] VOLATILE '(anon)' type_id=3D4 >>> >> >> > >> > [6] INT 'short int' size=3D2 bits_offset=3D0 nr_bits=3D16 = encoding=3DSIGNED >>> >> >> > >> > [7] INT 'short unsigned int' size=3D2 bits_offset=3D0 nr_b= its=3D16 encoding=3D(none) >>> >> >> > >> > [8] TYPEDEF '__u16' type_id=3D7 >>> >> >> > >> > [9] INT 'int' size=3D4 bits_offset=3D0 nr_bits=3D32 encodi= ng=3DSIGNED >>> >> >> > >> > [10] TYPEDEF '__s32' type_id=3D9 >>> >> >> > >> > [11] INT 'unsigned int' size=3D4 bits_offset=3D0 nr_bits= =3D32 encoding=3D(none) >>> >> >> > >> > [12] TYPEDEF '__u32' type_id=3D11 >>> >> >> > >> > [13] INT 'long long int' size=3D8 bits_offset=3D0 nr_bits= =3D64 encoding=3DSIGNED >>> >> >> > >> > [14] INT 'long long unsigned int' size=3D8 bits_offset=3D0= nr_bits=3D64 >>> >> >> > >> > encoding=3D(none) >>> >> >> > >> > [15] TYPEDEF '__u64' type_id=3D14 >>> >> >> > >> > [16] INT 'long unsigned int' size=3D8 bits_offset=3D0 nr_b= its=3D64 encoding=3D(none) >>> >> >> > >> > [17] INT 'long int' size=3D8 bits_offset=3D0 nr_bits=3D64 = encoding=3DSIGNED >>> >> >> > >> > [18] INT 'char' size=3D1 bits_offset=3D0 nr_bits=3D8 encod= ing=3DUNKN >>> >> >> > >> > [19] CONST '(anon)' type_id=3D18 >>> >> >> > >> > [20] TYPEDEF '__be16' type_id=3D8 >>> >> >> > >> > [21] TYPEDEF '__be32' type_id=3D12 >>> >> >> > >> > [22] ENUM 'bpf_map_type' encoding=3DUNSIGNED size=3D4 vlen= =3D31 >>> >> >> > >> > 'BPF_MAP_TYPE_UNSPEC' val=3D0 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH' val=3D1 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY' val=3D2 >>> >> >> > >> > 'BPF_MAP_TYPE_PROG_ARRAY' val=3D3 >>> >> >> > >> > 'BPF_MAP_TYPE_PERF_EVENT_ARRAY' val=3D4 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_HASH' val=3D5 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_ARRAY' val=3D6 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK_TRACE' val=3D7 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_ARRAY' val=3D8 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_HASH' val=3D9 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_PERCPU_HASH' val=3D10 >>> >> >> > >> > 'BPF_MAP_TYPE_LPM_TRIE' val=3D11 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY_OF_MAPS' val=3D12 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH_OF_MAPS' val=3D13 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP' val=3D14 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKMAP' val=3D15 >>> >> >> > >> > 'BPF_MAP_TYPE_CPUMAP' val=3D16 >>> >> >> > >> > 'BPF_MAP_TYPE_XSKMAP' val=3D17 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKHASH' val=3D18 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_STORAGE' val=3D19 >>> >> >> > >> > 'BPF_MAP_TYPE_REUSEPORT_SOCKARRAY' val=3D20 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE' val=3D21 >>> >> >> > >> > 'BPF_MAP_TYPE_QUEUE' val=3D22 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK' val=3D23 >>> >> >> > >> > 'BPF_MAP_TYPE_SK_STORAGE' val=3D24 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP_HASH' val=3D25 >>> >> >> > >> > 'BPF_MAP_TYPE_STRUCT_OPS' val=3D26 >>> >> >> > >> > 'BPF_MAP_TYPE_RINGBUF' val=3D27 >>> >> >> > >> > 'BPF_MAP_TYPE_INODE_STORAGE' val=3D28 >>> >> >> > >> > 'BPF_MAP_TYPE_TASK_STORAGE' val=3D29 >>> >> >> > >> > 'BPF_MAP_TYPE_BLOOM_FILTER' val=3D30 >>> >> >> > >> > [23] UNION '(anon)' size=3D8 vlen=3D1 >>> >> >> > >> > 'flow_keys' type_id=3D29 bits_offset=3D0 >>> >> >> > >> > [24] STRUCT 'bpf_flow_keys' size=3D56 vlen=3D13 >>> >> >> > >> > 'nhoff' type_id=3D8 bits_offset=3D0 >>> >> >> > >> > 'thoff' type_id=3D8 bits_offset=3D16 >>> >> >> > >> > 'addr_proto' type_id=3D8 bits_offset=3D32 >>> >> >> > >> > 'is_frag' type_id=3D3 bits_offset=3D48 >>> >> >> > >> > 'is_first_frag' type_id=3D3 bits_offset=3D56 >>> >> >> > >> > 'is_encap' type_id=3D3 bits_offset=3D64 >>> >> >> > >> > 'ip_proto' type_id=3D3 bits_offset=3D72 >>> >> >> > >> > 'n_proto' type_id=3D20 bits_offset=3D80 >>> >> >> > >> > 'sport' type_id=3D20 bits_offset=3D96 >>> >> >> > >> > 'dport' type_id=3D20 bits_offset=3D112 >>> >> >> > >> > '(anon)' type_id=3D25 bits_offset=3D128 >>> >> >> > >> > 'flags' type_id=3D12 bits_offset=3D384 >>> >> >> > >> > 'flow_label' type_id=3D21 bits_offset=3D416 >>> >> >> > >> > [25] UNION '(anon)' size=3D32 vlen=3D2 >>> >> >> > >> > '(anon)' type_id=3D26 bits_offset=3D0 >>> >> >> > >> > '(anon)' type_id=3D27 bits_offset=3D0 >>> >> >> > >> > [26] STRUCT '(anon)' size=3D8 vlen=3D2 >>> >> >> > >> > 'ipv4_src' type_id=3D21 bits_offset=3D0 >>> >> >> > >> > 'ipv4_dst' type_id=3D21 bits_offset=3D32 >>> >> >> > >> > [27] STRUCT '(anon)' size=3D32 vlen=3D2 >>> >> >> > >> > 'ipv6_src' type_id=3D28 bits_offset=3D0 >>> >> >> > >> > 'ipv6_dst' type_id=3D28 bits_offset=3D128 >>> >> >> > >> > [28] ARRAY '(anon)' type_id=3D12 index_type_id=3D16 nr_ele= ms=3D4 >>> >> >> > >> > [29] PTR '(anon)' type_id=3D24 >>> >> >> > >> > [30] UNION '(anon)' size=3D8 vlen=3D1 >>> >> >> > >> > 'sk' type_id=3D32 bits_offset=3D0 >>> >> >> > >> > [31] STRUCT 'bpf_sock' size=3D80 vlen=3D14 >>> >> >> > >> > 'bound_dev_if' type_id=3D12 bits_offset=3D0 >>> >> >> > >> > 'family' type_id=3D12 bits_offset=3D32 >>> >> >> > >> > 'type' type_id=3D12 bits_offset=3D64 >>> >> >> > >> > 'protocol' type_id=3D12 bits_offset=3D96 >>> >> >> > >> > 'mark' type_id=3D12 bits_offset=3D128 >>> >> >> > >> > 'priority' type_id=3D12 bits_offset=3D160 >>> >> >> > >> > 'src_ip4' type_id=3D12 bits_offset=3D192 >>> >> >> > >> > 'src_ip6' type_id=3D28 bits_offset=3D224 >>> >> >> > >> > 'src_port' type_id=3D12 bits_offset=3D352 >>> >> >> > >> > 'dst_port' type_id=3D20 bits_offset=3D384 >>> >> >> > >> > 'dst_ip4' type_id=3D12 bits_offset=3D416 >>> >> >> > >> > 'dst_ip6' type_id=3D28 bits_offset=3D448 >>> >> >> > >> > 'state' type_id=3D12 bits_offset=3D576 >>> >> >> > >> > 'rx_queue_mapping' type_id=3D10 bits_offset=3D608 >>> >> >> > >> > [32] PTR '(anon)' type_id=3D31 >>> >> >> > >> > [33] STRUCT '__sk_buff' size=3D192 vlen=3D33 >>> >> >> > >> > 'len' type_id=3D12 bits_offset=3D0 >>> >> >> > >> > 'pkt_type' type_id=3D12 bits_offset=3D32 >>> >> >> > >> > 'mark' type_id=3D12 bits_offset=3D64 >>> >> >> > >> > 'queue_mapping' type_id=3D12 bits_offset=3D96 >>> >> >> > >> > 'protocol' type_id=3D12 bits_offset=3D128 >>> >> >> > >> > 'vlan_present' type_id=3D12 bits_offset=3D160 >>> >> >> > >> > 'vlan_tci' type_id=3D12 bits_offset=3D192 >>> >> >> > >> > 'vlan_proto' type_id=3D12 bits_offset=3D224 >>> >> >> > >> > 'priority' type_id=3D12 bits_offset=3D256 >>> >> >> > >> > 'ingress_ifindex' type_id=3D12 bits_offset=3D288 >>> >> >> > >> > 'ifindex' type_id=3D12 bits_offset=3D320 >>> >> >> > >> > 'tc_index' type_id=3D12 bits_offset=3D352 >>> >> >> > >> > 'cb' type_id=3D34 bits_offset=3D384 >>> >> >> > >> > 'hash' type_id=3D12 bits_offset=3D544 >>> >> >> > >> > 'tc_classid' type_id=3D12 bits_offset=3D576 >>> >> >> > >> > 'data' type_id=3D12 bits_offset=3D608 >>> >> >> > >> > 'data_end' type_id=3D12 bits_offset=3D640 >>> >> >> > >> > 'napi_id' type_id=3D12 bits_offset=3D672 >>> >> >> > >> > 'family' type_id=3D12 bits_offset=3D704 >>> >> >> > >> > 'remote_ip4' type_id=3D12 bits_offset=3D736 >>> >> >> > >> > 'local_ip4' type_id=3D12 bits_offset=3D768 >>> >> >> > >> > 'remote_ip6' type_id=3D28 bits_offset=3D800 >>> >> >> > >> > 'local_ip6' type_id=3D28 bits_offset=3D928 >>> >> >> > >> > 'remote_port' type_id=3D12 bits_offset=3D1056 >>> >> >> > >> > 'local_port' type_id=3D12 bits_offset=3D1088 >>> >> >> > >> > 'data_meta' type_id=3D12 bits_offset=3D1120 >>> >> >> > >> > '(anon)' type_id=3D23 bits_offset=3D1152 >>> >> >> > >> > 'tstamp' type_id=3D15 bits_offset=3D1216 >>> >> >> > >> > 'wire_len' type_id=3D12 bits_offset=3D1280 >>> >> >> > >> > 'gso_segs' type_id=3D12 bits_offset=3D1312 >>> >> >> > >> > '(anon)' type_id=3D30 bits_offset=3D1344 >>> >> >> > >> > 'gso_size' type_id=3D12 bits_offset=3D1408 >>> >> >> > >> > 'hwtstamp' type_id=3D15 bits_offset=3D1472 >>> >> >> > >> > [34] ARRAY '(anon)' type_id=3D12 index_type_id=3D16 nr_ele= ms=3D5 >>> >> >> > >> > [35] CONST '(anon)' type_id=3D33 >>> >> >> > >> > [36] PTR '(anon)' type_id=3D0 >>> >> >> > >> > [37] STRUCT '(anon)' size=3D24 vlen=3D3 >>> >> >> > >> > 'type' type_id=3D39 bits_offset=3D0 >>> >> >> > >> > 'key' type_id=3D40 bits_offset=3D64 >>> >> >> > >> > 'value' type_id=3D41 bits_offset=3D128 >>> >> >> > >> > [38] ARRAY '(anon)' type_id=3D9 index_type_id=3D16 nr_elem= s=3D1 >>> >> >> > >> > [39] PTR '(anon)' type_id=3D38 >>> >> >> > >> > [40] PTR '(anon)' type_id=3D12 >>> >> >> > >> > [41] PTR '(anon)' type_id=3D3 >>> >> >> > >> > [42] ARRAY '(anon)' type_id=3D19 index_type_id=3D16 nr_ele= ms=3D18 >>> >> >> > >> > [43] CONST '(anon)' type_id=3D42 >>> >> >> > >> > [44] FUNC_PROTO '(anon)' ret_type_id=3D36 vlen=3D2 >>> >> >> > >> > '(anon)' type_id=3D36 >>> >> >> > >> > '(anon)' type_id=3D46 >>> >> >> > >> > [45] CONST '(anon)' type_id=3D0 >>> >> >> > >> > [46] PTR '(anon)' type_id=3D45 >>> >> >> > >> > [47] FUNC_PROTO '(anon)' ret_type_id=3D9 vlen=3D1 >>> >> >> > >> > 'sk' type_id=3D48 >>> >> >> > >> > [48] PTR '(anon)' type_id=3D35 >>> >> >> > >> > [49] VAR '_license' type_id=3D43, linkage=3Dstatic >>> >> >> > >> > [50] VAR 'is_allow_list' type_id=3D5, linkage=3Dglobal >>> >> >> > >> > [51] VAR 'sd_restrictif' type_id=3D37, linkage=3Dglobal >>> >> >> > >> > [52] FUNC 'sd_restrictif_i' type_id=3D47 linkage=3Dglobal >>> >> >> > >> > [53] FUNC 'sd_restrictif_e' type_id=3D47 linkage=3Dglobal >>> >> >> > >> > [54] FUNC 'restrict_network_interfaces_impl' type_id=3D47 = linkage=3Dstatic >>> >> >> > >> > [55] DATASEC '.data' size=3D1 vlen=3D1 >>> >> >> > >> > type_id=3D50 offset=3D0 size=3D1 (VAR 'is_allow_list') >>> >> >> > >> > [56] DATASEC 'license' size=3D18 vlen=3D1 >>> >> >> > >> > type_id=3D49 offset=3D0 size=3D18 (VAR '_license') >>> >> >> > >> > [57] DATASEC '.maps' size=3D24 vlen=3D1 >>> >> >> > >> > type_id=3D51 offset=3D0 size=3D24 (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-i= faces.bpf.unstripped.o >>> >> >> > >> > format raw >>> >> >> > >> > [1] INT 'signed char' size=3D1 bits_offset=3D0 nr_bits=3D8= encoding=3DUNKN >>> >> >> > >> > [2] INT 'unsigned char' size=3D1 bits_offset=3D0 nr_bits= =3D8 encoding=3DCHAR >>> >> >> > >> > [3] TYPEDEF '__u8' type_id=3D2 >>> >> >> > >> > [4] CONST '(anon)' type_id=3D3 >>> >> >> > >> > [5] VOLATILE '(anon)' type_id=3D4 >>> >> >> > >> > [6] INT 'short int' size=3D2 bits_offset=3D0 nr_bits=3D16 = encoding=3DSIGNED >>> >> >> > >> > [7] INT 'short unsigned int' size=3D2 bits_offset=3D0 nr_b= its=3D16 encoding=3D(none) >>> >> >> > >> > [8] TYPEDEF '__u16' type_id=3D7 >>> >> >> > >> > [9] INT 'int' size=3D4 bits_offset=3D0 nr_bits=3D32 encodi= ng=3DSIGNED >>> >> >> > >> > [10] TYPEDEF '__s32' type_id=3D9 >>> >> >> > >> > [11] INT 'unsigned int' size=3D4 bits_offset=3D0 nr_bits= =3D32 encoding=3D(none) >>> >> >> > >> > [12] TYPEDEF '__u32' type_id=3D11 >>> >> >> > >> > [13] INT 'long long int' size=3D8 bits_offset=3D0 nr_bits= =3D64 encoding=3DSIGNED >>> >> >> > >> > [14] INT 'long long unsigned int' size=3D8 bits_offset=3D0= nr_bits=3D64 >>> >> >> > >> > encoding=3D(none) >>> >> >> > >> > [15] TYPEDEF '__u64' type_id=3D14 >>> >> >> > >> > [16] INT 'long unsigned int' size=3D8 bits_offset=3D0 nr_b= its=3D64 encoding=3D(none) >>> >> >> > >> > [17] INT 'long int' size=3D8 bits_offset=3D0 nr_bits=3D64 = encoding=3DSIGNED >>> >> >> > >> > [18] INT 'char' size=3D1 bits_offset=3D0 nr_bits=3D8 encod= ing=3DUNKN >>> >> >> > >> > [19] CONST '(anon)' type_id=3D18 >>> >> >> > >> > [20] TYPEDEF '__be16' type_id=3D8 >>> >> >> > >> > [21] TYPEDEF '__be32' type_id=3D12 >>> >> >> > >> > [22] ENUM 'bpf_map_type' encoding=3DUNSIGNED size=3D4 vlen= =3D31 >>> >> >> > >> > 'BPF_MAP_TYPE_UNSPEC' val=3D0 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH' val=3D1 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY' val=3D2 >>> >> >> > >> > 'BPF_MAP_TYPE_PROG_ARRAY' val=3D3 >>> >> >> > >> > 'BPF_MAP_TYPE_PERF_EVENT_ARRAY' val=3D4 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_HASH' val=3D5 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_ARRAY' val=3D6 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK_TRACE' val=3D7 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_ARRAY' val=3D8 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_HASH' val=3D9 >>> >> >> > >> > 'BPF_MAP_TYPE_LRU_PERCPU_HASH' val=3D10 >>> >> >> > >> > 'BPF_MAP_TYPE_LPM_TRIE' val=3D11 >>> >> >> > >> > 'BPF_MAP_TYPE_ARRAY_OF_MAPS' val=3D12 >>> >> >> > >> > 'BPF_MAP_TYPE_HASH_OF_MAPS' val=3D13 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP' val=3D14 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKMAP' val=3D15 >>> >> >> > >> > 'BPF_MAP_TYPE_CPUMAP' val=3D16 >>> >> >> > >> > 'BPF_MAP_TYPE_XSKMAP' val=3D17 >>> >> >> > >> > 'BPF_MAP_TYPE_SOCKHASH' val=3D18 >>> >> >> > >> > 'BPF_MAP_TYPE_CGROUP_STORAGE' val=3D19 >>> >> >> > >> > 'BPF_MAP_TYPE_REUSEPORT_SOCKARRAY' val=3D20 >>> >> >> > >> > 'BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE' val=3D21 >>> >> >> > >> > 'BPF_MAP_TYPE_QUEUE' val=3D22 >>> >> >> > >> > 'BPF_MAP_TYPE_STACK' val=3D23 >>> >> >> > >> > 'BPF_MAP_TYPE_SK_STORAGE' val=3D24 >>> >> >> > >> > 'BPF_MAP_TYPE_DEVMAP_HASH' val=3D25 >>> >> >> > >> > 'BPF_MAP_TYPE_STRUCT_OPS' val=3D26 >>> >> >> > >> > 'BPF_MAP_TYPE_RINGBUF' val=3D27 >>> >> >> > >> > 'BPF_MAP_TYPE_INODE_STORAGE' val=3D28 >>> >> >> > >> > 'BPF_MAP_TYPE_TASK_STORAGE' val=3D29 >>> >> >> > >> > 'BPF_MAP_TYPE_BLOOM_FILTER' val=3D30 >>> >> >> > >> > [23] UNION '(anon)' size=3D8 vlen=3D1 >>> >> >> > >> > 'flow_keys' type_id=3D29 bits_offset=3D0 >>> >> >> > >> > [24] STRUCT 'bpf_flow_keys' size=3D56 vlen=3D13 >>> >> >> > >> > 'nhoff' type_id=3D8 bits_offset=3D0 >>> >> >> > >> > 'thoff' type_id=3D8 bits_offset=3D16 >>> >> >> > >> > 'addr_proto' type_id=3D8 bits_offset=3D32 >>> >> >> > >> > 'is_frag' type_id=3D3 bits_offset=3D48 >>> >> >> > >> > 'is_first_frag' type_id=3D3 bits_offset=3D56 >>> >> >> > >> > 'is_encap' type_id=3D3 bits_offset=3D64 >>> >> >> > >> > 'ip_proto' type_id=3D3 bits_offset=3D72 >>> >> >> > >> > 'n_proto' type_id=3D20 bits_offset=3D80 >>> >> >> > >> > 'sport' type_id=3D20 bits_offset=3D96 >>> >> >> > >> > 'dport' type_id=3D20 bits_offset=3D112 >>> >> >> > >> > '(anon)' type_id=3D25 bits_offset=3D128 >>> >> >> > >> > 'flags' type_id=3D12 bits_offset=3D384 >>> >> >> > >> > 'flow_label' type_id=3D21 bits_offset=3D416 >>> >> >> > >> > [25] UNION '(anon)' size=3D32 vlen=3D2 >>> >> >> > >> > '(anon)' type_id=3D26 bits_offset=3D0 >>> >> >> > >> > '(anon)' type_id=3D27 bits_offset=3D0 >>> >> >> > >> > [26] STRUCT '(anon)' size=3D8 vlen=3D2 >>> >> >> > >> > 'ipv4_src' type_id=3D21 bits_offset=3D0 >>> >> >> > >> > 'ipv4_dst' type_id=3D21 bits_offset=3D32 >>> >> >> > >> > [27] STRUCT '(anon)' size=3D32 vlen=3D2 >>> >> >> > >> > 'ipv6_src' type_id=3D28 bits_offset=3D0 >>> >> >> > >> > 'ipv6_dst' type_id=3D28 bits_offset=3D128 >>> >> >> > >> > [28] ARRAY '(anon)' type_id=3D12 index_type_id=3D16 nr_ele= ms=3D4 >>> >> >> > >> > [29] PTR '(anon)' type_id=3D24 >>> >> >> > >> > [30] UNION '(anon)' size=3D8 vlen=3D1 >>> >> >> > >> > 'sk' type_id=3D32 bits_offset=3D0 >>> >> >> > >> > [31] STRUCT 'bpf_sock' size=3D80 vlen=3D14 >>> >> >> > >> > 'bound_dev_if' type_id=3D12 bits_offset=3D0 >>> >> >> > >> > 'family' type_id=3D12 bits_offset=3D32 >>> >> >> > >> > 'type' type_id=3D12 bits_offset=3D64 >>> >> >> > >> > 'protocol' type_id=3D12 bits_offset=3D96 >>> >> >> > >> > 'mark' type_id=3D12 bits_offset=3D128 >>> >> >> > >> > 'priority' type_id=3D12 bits_offset=3D160 >>> >> >> > >> > 'src_ip4' type_id=3D12 bits_offset=3D192 >>> >> >> > >> > 'src_ip6' type_id=3D28 bits_offset=3D224 >>> >> >> > >> > 'src_port' type_id=3D12 bits_offset=3D352 >>> >> >> > >> > 'dst_port' type_id=3D20 bits_offset=3D384 >>> >> >> > >> > 'dst_ip4' type_id=3D12 bits_offset=3D416 >>> >> >> > >> > 'dst_ip6' type_id=3D28 bits_offset=3D448 >>> >> >> > >> > 'state' type_id=3D12 bits_offset=3D576 >>> >> >> > >> > 'rx_queue_mapping' type_id=3D10 bits_offset=3D608 >>> >> >> > >> > [32] PTR '(anon)' type_id=3D31 >>> >> >> > >> > [33] STRUCT '__sk_buff' size=3D192 vlen=3D33 >>> >> >> > >> > 'len' type_id=3D12 bits_offset=3D0 >>> >> >> > >> > 'pkt_type' type_id=3D12 bits_offset=3D32 >>> >> >> > >> > 'mark' type_id=3D12 bits_offset=3D64 >>> >> >> > >> > 'queue_mapping' type_id=3D12 bits_offset=3D96 >>> >> >> > >> > 'protocol' type_id=3D12 bits_offset=3D128 >>> >> >> > >> > 'vlan_present' type_id=3D12 bits_offset=3D160 >>> >> >> > >> > 'vlan_tci' type_id=3D12 bits_offset=3D192 >>> >> >> > >> > 'vlan_proto' type_id=3D12 bits_offset=3D224 >>> >> >> > >> > 'priority' type_id=3D12 bits_offset=3D256 >>> >> >> > >> > 'ingress_ifindex' type_id=3D12 bits_offset=3D288 >>> >> >> > >> > 'ifindex' type_id=3D12 bits_offset=3D320 >>> >> >> > >> > 'tc_index' type_id=3D12 bits_offset=3D352 >>> >> >> > >> > 'cb' type_id=3D34 bits_offset=3D384 >>> >> >> > >> > 'hash' type_id=3D12 bits_offset=3D544 >>> >> >> > >> > 'tc_classid' type_id=3D12 bits_offset=3D576 >>> >> >> > >> > 'data' type_id=3D12 bits_offset=3D608 >>> >> >> > >> > 'data_end' type_id=3D12 bits_offset=3D640 >>> >> >> > >> > 'napi_id' type_id=3D12 bits_offset=3D672 >>> >> >> > >> > 'family' type_id=3D12 bits_offset=3D704 >>> >> >> > >> > 'remote_ip4' type_id=3D12 bits_offset=3D736 >>> >> >> > >> > 'local_ip4' type_id=3D12 bits_offset=3D768 >>> >> >> > >> > 'remote_ip6' type_id=3D28 bits_offset=3D800 >>> >> >> > >> > 'local_ip6' type_id=3D28 bits_offset=3D928 >>> >> >> > >> > 'remote_port' type_id=3D12 bits_offset=3D1056 >>> >> >> > >> > 'local_port' type_id=3D12 bits_offset=3D1088 >>> >> >> > >> > 'data_meta' type_id=3D12 bits_offset=3D1120 >>> >> >> > >> > '(anon)' type_id=3D23 bits_offset=3D1152 >>> >> >> > >> > 'tstamp' type_id=3D15 bits_offset=3D1216 >>> >> >> > >> > 'wire_len' type_id=3D12 bits_offset=3D1280 >>> >> >> > >> > 'gso_segs' type_id=3D12 bits_offset=3D1312 >>> >> >> > >> > '(anon)' type_id=3D30 bits_offset=3D1344 >>> >> >> > >> > 'gso_size' type_id=3D12 bits_offset=3D1408 >>> >> >> > >> > 'hwtstamp' type_id=3D15 bits_offset=3D1472 >>> >> >> > >> > [34] ARRAY '(anon)' type_id=3D12 index_type_id=3D16 nr_ele= ms=3D5 >>> >> >> > >> > [35] CONST '(anon)' type_id=3D33 >>> >> >> > >> > [36] PTR '(anon)' type_id=3D0 >>> >> >> > >> > [37] STRUCT '(anon)' size=3D24 vlen=3D3 >>> >> >> > >> > 'type' type_id=3D39 bits_offset=3D0 >>> >> >> > >> > 'key' type_id=3D40 bits_offset=3D64 >>> >> >> > >> > 'value' type_id=3D41 bits_offset=3D128 >>> >> >> > >> > [38] ARRAY '(anon)' type_id=3D9 index_type_id=3D16 nr_elem= s=3D1 >>> >> >> > >> > [39] PTR '(anon)' type_id=3D38 >>> >> >> > >> > [40] PTR '(anon)' type_id=3D12 >>> >> >> > >> > [41] PTR '(anon)' type_id=3D3 >>> >> >> > >> > [42] ARRAY '(anon)' type_id=3D19 index_type_id=3D16 nr_ele= ms=3D18 >>> >> >> > >> > [43] CONST '(anon)' type_id=3D42 >>> >> >> > >> > [44] FUNC_PROTO '(anon)' ret_type_id=3D36 vlen=3D2 >>> >> >> > >> > '(anon)' type_id=3D36 >>> >> >> > >> > '(anon)' type_id=3D46 >>> >> >> > >> > [45] CONST '(anon)' type_id=3D0 >>> >> >> > >> > [46] PTR '(anon)' type_id=3D45 >>> >> >> > >> > [47] FUNC_PROTO '(anon)' ret_type_id=3D9 vlen=3D1 >>> >> >> > >> > 'sk' type_id=3D48 >>> >> >> > >> > [48] PTR '(anon)' type_id=3D35 >>> >> >> > >> > [49] FUNC_PROTO '(anon)' ret_type_id=3D9 vlen=3D1 >>> >> >> > >> > 'sk' type_id=3D48 >>> >> >> > >> > [50] FUNC_PROTO '(anon)' ret_type_id=3D9 vlen=3D1 >>> >> >> > >> > 'sk' type_id=3D48 >>> >> >> > >> > [51] VAR '_license' type_id=3D43, linkage=3Dstatic >>> >> >> > >> > [52] VAR 'is_allow_list' type_id=3D5, linkage=3Dglobal >>> >> >> > >> > [53] VAR 'sd_restrictif' type_id=3D37, linkage=3Dglobal >>> >> >> > >> > [54] FUNC 'bpf_map_lookup_elem' type_id=3D44 linkage=3Dglo= bal >>> >> >> > >> > [55] FUNC 'sd_restrictif_i' type_id=3D47 linkage=3Dglobal >>> >> >> > >> > [56] FUNC 'sd_restrictif_e' type_id=3D49 linkage=3Dglobal >>> >> >> > >> > [57] FUNC 'restrict_network_interfaces_impl' type_id=3D50 = linkage=3Dstatic >>> >> >> > >> > [58] DATASEC 'license' size=3D0 vlen=3D1 >>> >> >> > >> > type_id=3D51 offset=3D0 size=3D18 (VAR '_license') >>> >> >> > >> > [59] DATASEC '.maps' size=3D0 vlen=3D1 >>> >> >> > >> > type_id=3D53 offset=3D0 size=3D24 (VAR 'sd_restrictif'= ) >>> >> >> > >> > [60] DATASEC '.data' size=3D0 vlen=3D1 >>> >> >> > >> > type_id=3D52 offset=3D0 size=3D1 (VAR 'is_allow_list') >>> >> >> > >> > >>> >> >> > >> >> >>> >> >> > >> >> >> GCC is wrong, clearly. This function is global ([0]) a= nd 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=3D1 bits_offset=3D0 nr_bit= s=3D8 encoding=3DUNKN >>> >> >> > >> >> >>> [2] INT 'unsigned char' size=3D1 bits_offset=3D0 nr_b= its=3D8 encoding=3DCHAR >>> >> >> > >> >> >>> [3] TYPEDEF '__u8' type_id=3D2 >>> >> >> > >> >> >>> [4] CONST '(anon)' type_id=3D3 >>> >> >> > >> >> >> >>> >> >> > >> >> >> [...]