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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> Date: Sun, 10 Jul 2022 15:06:13 +0200 In-Reply-To: (James Hilliard's message of "Sun, 10 Jul 2022 06:16:41 -0600") Message-ID: <87k08lunga.fsf@oracle.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: FR3P281CA0048.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:4a::20) To BYAPR10MB2888.namprd10.prod.outlook.com (2603:10b6:a03:88::32) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d65f3d90-c16a-4337-4b7d-08da6274fbfe X-MS-TrafficTypeDiagnostic: DM4PR10MB5967:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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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-j= ames.hilliard1@gmail.com/ >> >> >> > >> >> >>> https://lore.kernel.org/bpf/20220706140623.2917858-1-j= ames.hilliard1@gmail.com/ >> >> >> > >> >> >>> >> >> >> > >> >> >>> 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/h= ost/sbin/bpftool >> >> >> > >> >> >>> gen object src/core/bpf/restrict_ifaces/restrict-iface= s.bpf.o >> >> >> > >> >> >>> src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.unstr= ipped.o >> >> >> > >> >> >>> libbpf: failed to find BTF info for global/extern symb= ol 'sd_restrictif_i' >> >> >> > >> >> >>> Error: failed to link >> >> >> > >> >> >>> 'src/core/bpf/restrict_ifaces/restrict-ifaces.bpf.unst= ripped.o': >> >> >> > >> >> >>> Unknown error -2 (-2) >> >> >> > >> >> >>> >> >> >> > >> >> >>> Relevant difference seems to be this: >> >> >> > >> >> >>> GCC: >> >> >> > >> >> >>> [55] FUNC 'sd_restrictif_i' type_id=3D47 linkage=3Dsta= tic >> >> >> > >> >> >>> Clang: >> >> >> > >> >> >>> [27] FUNC 'sd_restrictif_i' type_id=3D26 linkage=3Dglo= bal >> >> >> > >> >> > >> >> >> > >> >> > 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 f= or 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/s= bin/bpftool >> >> >> > >> > gen skeleton src/core/bpf/restrict_ifaces/restrict-ifaces.b= pf.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/rest= rict-ifaces.bpf.o >> >> >> > > text data bss dec hex filenam= e >> >> >> > > 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 un= signed >> >> >> > char is_allow_list =3D 0;' in restrict-ifaces.bpf.c, but that go= es to >> >> >> > .data and not to .bss, as expected. >> >> >> > >> >> >> > If you build restrict-ifaces.bpf.o with LLVM, is the bss still e= mpty? I >> >> >> > don't think the code in libbpf.c even checks for this eventualit= y... >> >> >> >> >> >> LLVM version(which skeleton generation works with): >> >> >> $ size restrict-ifaces.bpf.o >> >> >> text data bss dec hex filename >> >> >> 323 24 0 347 15b restrict-if= aces.bpf.o >> >> >> >> >> >> $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/b= pftool >> >> >> 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=3DSIG= NED >> >> >> [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=3D3= 2 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 encod= ing=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 enco= ding=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=3D6= 4 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=3DSI= GNED >> >> >> [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_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(stru= ct 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(ob= j, sec_idx)); > > Ok, skeleton is now getting generated successfully, however it differs fr= om 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_ifac= es_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... > 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-i= faces.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, typ= e=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, ty= pe=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_restric= tif' > 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_l= ist' > 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_restri= ctif' > 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_skel= _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\x0= d\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\x6= 9\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\x6= 6\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\x7= 2\x65\ > \x73\x74\x72\x69\x63\x74\x69\x66\0\x69\x73\x5f\x61\x6c\x6c\x6f\x77\x5f\x6= c\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\x6= e\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\x5= 7\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\x2= 0\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\x0= 8\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\x0= 8\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\x4= 0\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\x1= d\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\x8= 0\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\x4= a\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\x0= 4\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\x9= f\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\xd= 8\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\x0= 1\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\x0= c\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\x6= 0\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\x0= 5\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\x1= 0\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\x4= 0\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\x1= 0\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\x1= 2\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\x7= 3\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\x6= 4\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\x6= f\x6e\ > \x67\x20\x75\x6e\x73\x69\x67\x6e\x65\x64\x20\x69\x6e\x74\0\x5f\x5f\x75\x3= 6\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\x5= 0\x46\ > \x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x41\x52\x52\x41\x59\0\x42\x50\x4= 6\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\x5= f\x54\ > \x59\x50\x45\x5f\x50\x45\x52\x43\x50\x55\x5f\x48\x41\x53\x48\0\x42\x50\x4= 6\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\x4= 1\x43\ > \x4b\x5f\x54\x52\x41\x43\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x5= 0\x45\ > \x5f\x43\x47\x52\x4f\x55\x50\x5f\x41\x52\x52\x41\x59\0\x42\x50\x46\x5f\x4= d\x41\ > \x50\x5f\x54\x59\x50\x45\x5f\x4c\x52\x55\x5f\x48\x41\x53\x48\0\x42\x50\x4= 6\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\x5= f\x4c\ > \x50\x4d\x5f\x54\x52\x49\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x5= 0\x45\ > \x5f\x41\x52\x52\x41\x59\x5f\x4f\x46\x5f\x4d\x41\x50\x53\0\x42\x50\x46\x5= f\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\x4= d\x41\ > \x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x4f\x43\x4= b\x4d\ > \x41\x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x43\x50\x5= 5\x4d\ > \x41\x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x58\x53\x4= b\x4d\ > \x41\x50\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x4f\x4= 3\x4b\ > \x48\x41\x53\x48\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x4= 3\x47\ > \x52\x4f\x55\x50\x5f\x53\x54\x4f\x52\x41\x47\x45\0\x42\x50\x46\x5f\x4d\x4= 1\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\x4= 5\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\x4= 5\x55\ > \x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x54\x41\x4= 3\x4b\ > \0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x53\x4b\x5f\x53\x5= 4\x4f\ > \x52\x41\x47\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x59\x50\x45\x5f\x4= 4\x45\ > \x56\x4d\x41\x50\x5f\x48\x41\x53\x48\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x5= 4\x59\ > \x50\x45\x5f\x53\x54\x52\x55\x43\x54\x5f\x4f\x50\x53\0\x42\x50\x46\x5f\x4= d\x41\ > \x50\x5f\x54\x59\x50\x45\x5f\x52\x49\x4e\x47\x42\x55\x46\0\x42\x50\x46\x5= f\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\x5= 3\x4b\ > \x5f\x53\x54\x4f\x52\x41\x47\x45\0\x42\x50\x46\x5f\x4d\x41\x50\x5f\x54\x5= 9\x50\ > \x45\x5f\x42\x4c\x4f\x4f\x4d\x5f\x46\x49\x4c\x54\x45\x52\0\x66\x6c\x6f\x7= 7\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\x7= 2\x74\ > \0\x66\x6c\x61\x67\x73\0\x66\x6c\x6f\x77\x5f\x6c\x61\x62\x65\x6c\0\x69\x7= 0\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\x5= f\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\x6= 1\x72\ > \x6b\0\x70\x72\x69\x6f\x72\x69\x74\x79\0\x73\x72\x63\x5f\x69\x70\x34\0\x7= 3\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\x6= 9\x6e\ > \x67\0\x5f\x5f\x73\x6b\x5f\x62\x75\x66\x66\0\x6c\x65\x6e\0\x70\x6b\x74\x5= f\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\x6= 9\0\ > \x76\x6c\x61\x6e\x5f\x70\x72\x6f\x74\x6f\0\x69\x6e\x67\x72\x65\x73\x73\x5= f\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\x7= 3\x69\ > \x64\0\x64\x61\x74\x61\0\x64\x61\x74\x61\x5f\x65\x6e\x64\0\x6e\x61\x70\x6= 9\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\x6= 9\x73\ > \x5f\x61\x6c\x6c\x6f\x77\x5f\x6c\x69\x73\x74\0\x73\x64\x5f\x72\x65\x73\x7= 4\x72\ > \x69\x63\x74\x69\x66\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x6= 6\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\x0= 1\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\x0= 8\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\xf= 0\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\x4= 0\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, typ= e=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, ty= pe=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, flag= s 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_restric= tif' > 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_l= ist' > 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_restri= ctif' > 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_skel= _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\x0= c\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\x7= 2\x6f\ > \x75\x70\x5f\x73\x6b\x62\x2f\x69\x6e\x67\x72\x65\x73\x73\0\x2e\x72\x6f\x6= 4\x61\ > \x74\x61\0\x6c\x69\x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\x72\x65\x7= 3\x74\ > \x72\x69\x63\x74\x2d\x69\x66\x61\x63\x65\x73\x2e\x62\x70\x66\x2e\x63\0\x4= c\x42\ > \x42\x30\x5f\x32\0\x4c\x42\x42\x30\x5f\x33\0\x4c\x42\x42\x30\x5f\x34\0\x4= c\x42\ > \x42\x31\x5f\x32\0\x4c\x42\x42\x31\x5f\x33\0\x4c\x42\x42\x31\x5f\x34\0\x5= f\x6c\ > \x69\x63\x65\x6e\x73\x65\0\x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x6= 9\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\x7= 2\x69\ > \x63\x74\x69\x66\x5f\x69\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x70\x5f\x7= 3\x6b\ > \x62\x2f\x65\x67\x72\x65\x73\x73\0\x2e\x72\x65\x6c\x63\x67\x72\x6f\x75\x7= 0\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\x0= 3\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\xf= f\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\x1= 1\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\x0= 1\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\x0= 3\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\x1= 8\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\x0= 8\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\x0= e\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\x0= 1\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\x0= 4\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\x2= 2\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\x1= c\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\x0= 3\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\x0= f\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\x4= 9\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\x7= 5\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\x6= 1\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\x6= e\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\x6= 1\x74\ > \x61\0\x64\x61\x74\x61\x5f\x65\x6e\x64\0\x6e\x61\x70\x69\x5f\x69\x64\0\x6= 6\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\x6= 1\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\x7= 5\x6e\ > \x73\x69\x67\x6e\x65\x64\x20\x6c\x6f\x6e\x67\x20\x6c\x6f\x6e\x67\0\x73\x6= b\0\ > \x73\x64\x5f\x72\x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x65\0\x73\x64\x5= f\x72\ > \x65\x73\x74\x72\x69\x63\x74\x69\x66\x5f\x69\0\x69\x73\x5f\x61\x6c\x6c\x6= f\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\x6= f\x63\ > \x6b\0\x2f\x68\x6f\x6d\x65\x2f\x62\x75\x69\x6c\x64\x72\x6f\x6f\x74\x2f\x6= 2\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\x2= 0\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\x7= 2\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\x2= 0\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\x2= 0\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\x6= 9\x66\ > \x20\x28\x21\x6c\x6f\x6f\x6b\x75\x70\x5f\x72\x65\x73\x75\x6c\x74\x29\0\x2= 0\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\x7= 4\x61\ > \0\x6c\x69\x63\x65\x6e\x73\x65\0\x2e\x6d\x61\x70\x73\0\x63\x67\x72\x6f\x7= 5\x70\ > \x5f\x73\x6b\x62\x2f\x65\x67\x72\x65\x73\x73\0\x63\x67\x72\x6f\x75\x70\x5= f\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\x0= 3\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\xf= 9\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\xc= 8\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\xc= 4\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\x2= 0\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\x0= 3\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\x7= 0\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, "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/restric= t-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, 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. >> > >> > 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(s= truct 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_idx= (obj, sec_idx)); >> >> >> >> > GCC: >> >> > $ /home/buildroot/buildroot/output/per-package/systemd/host/sbin/bp= ftool >> >> > --debug gen skeleton >> >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/rest= rict-ifaces.bpf.o >> >> > libbpf: loading object 'restrict_ifaces_bpf' from buffer >> >> > libbpf: elf: section(2) .symtab, size 336, link 1, flags 0, type=3D= 2 >> >> > 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' a= t >> >> > 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, fl= ags >> >> > 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: map 'restrict.bss' (global data): at sec_idx 4, offset 0, f= lags 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/bp= ftool >> >> > --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=3D= 2 >> >> > 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' 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=3D1 >> >> > libbpf: sec 'cgroup_skb/ingress': found program 'sd_restrictif_i' a= t >> >> > 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, fla= gs 40, type=3D9 >> >> > libbpf: elf: section(9) .relcgroup_skb/ingress, size 32, link 2, fl= ags >> >> > 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= , 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_r= estrictif' >> >> > 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_a= llow_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 t= rying to >> >> >> > >> mmap 0 bytes in `bpf_object__init_internal_map': >> >> >> > >> >> >> >> > >> map->mmaped =3D mmap(NULL, bpf_map_mmap_sz(map), PROT= _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 buf= fer: %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 suppose= d to be >> >> >> > >> there? >> >> >> > >> >> >> >> > >> > Stripped file passed to gen skeleton: >> >> >> > >> > /home/buildroot/buildroot/output/per-package/systemd/host/s= bin/bpftool >> >> >> > >> > btf dump file >> >> >> > >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifa= ces/restrict-ifaces.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=3D= 8 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 e= ncoding=3DSIGNED >> >> >> > >> > [7] INT 'short unsigned int' size=3D2 bits_offset=3D0 nr_bi= ts=3D16 encoding=3D(none) >> >> >> > >> > [8] TYPEDEF '__u16' type_id=3D7 >> >> >> > >> > [9] INT 'int' size=3D4 bits_offset=3D0 nr_bits=3D32 encodin= g=3DSIGNED >> >> >> > >> > [10] TYPEDEF '__s32' type_id=3D9 >> >> >> > >> > [11] INT 'unsigned int' size=3D4 bits_offset=3D0 nr_bits=3D= 32 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_bi= ts=3D64 encoding=3D(none) >> >> >> > >> > [17] INT 'long int' size=3D8 bits_offset=3D0 nr_bits=3D64 e= ncoding=3DSIGNED >> >> >> > >> > [18] INT 'char' size=3D1 bits_offset=3D0 nr_bits=3D8 encodi= ng=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_elem= s=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_elem= s=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_elems= =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_elem= s=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 l= inkage=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/s= bin/bpftool >> >> >> > >> > btf dump file >> >> >> > >> > >> >> > >> > output/build/systemd-custom/build/src/core/bpf/restrict_ifaces/restric= t-ifaces.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=3D= 8 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 e= ncoding=3DSIGNED >> >> >> > >> > [7] INT 'short unsigned int' size=3D2 bits_offset=3D0 nr_bi= ts=3D16 encoding=3D(none) >> >> >> > >> > [8] TYPEDEF '__u16' type_id=3D7 >> >> >> > >> > [9] INT 'int' size=3D4 bits_offset=3D0 nr_bits=3D32 encodin= g=3DSIGNED >> >> >> > >> > [10] TYPEDEF '__s32' type_id=3D9 >> >> >> > >> > [11] INT 'unsigned int' size=3D4 bits_offset=3D0 nr_bits=3D= 32 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_bi= ts=3D64 encoding=3D(none) >> >> >> > >> > [17] INT 'long int' size=3D8 bits_offset=3D0 nr_bits=3D64 e= ncoding=3DSIGNED >> >> >> > >> > [18] INT 'char' size=3D1 bits_offset=3D0 nr_bits=3D8 encodi= ng=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_elem= s=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_elem= s=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_elems= =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_elem= s=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=3Dglob= al >> >> >> > >> > [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 l= inkage=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]) an= d libbpf >> >> >> > >> >> >> expects it to be marked as such in BTF. >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> >> > >> > >> >> > >> > https://github.com/systemd/systemd/blob/main/src/core/bpf/restrict_ifa= ces/restrict-ifaces.bpf.c#L42-L50 >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >>> GCC: >> >> >> > >> >> >>> >> >> >> > >> >> >>> [1] INT 'signed char' size=3D1 bits_offset=3D0 nr_bits= =3D8 encoding=3DUNKN >> >> >> > >> >> >>> [2] INT 'unsigned char' size=3D1 bits_offset=3D0 nr_bi= ts=3D8 encoding=3DCHAR >> >> >> > >> >> >>> [3] TYPEDEF '__u8' type_id=3D2 >> >> >> > >> >> >>> [4] CONST '(anon)' type_id=3D3 >> >> >> > >> >> >> >> >> >> > >> >> >> [...]