15981881dSAndrii Nakryiko /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ 25981881dSAndrii Nakryiko 35981881dSAndrii Nakryiko /* 45981881dSAndrii Nakryiko * Libbpf legacy APIs (either discouraged or deprecated, as mentioned in [0]) 55981881dSAndrii Nakryiko * 65981881dSAndrii Nakryiko * [0] https://docs.google.com/document/d/1UyjTZuPFWiPFyKk1tV5an11_iaRuec6U-ZESZ54nNTY 75981881dSAndrii Nakryiko * 85981881dSAndrii Nakryiko * Copyright (C) 2021 Facebook 95981881dSAndrii Nakryiko */ 105981881dSAndrii Nakryiko #ifndef __LIBBPF_LEGACY_BPF_H 115981881dSAndrii Nakryiko #define __LIBBPF_LEGACY_BPF_H 125981881dSAndrii Nakryiko 135981881dSAndrii Nakryiko #include <linux/bpf.h> 145981881dSAndrii Nakryiko #include <stdbool.h> 155981881dSAndrii Nakryiko #include <stddef.h> 165981881dSAndrii Nakryiko #include <stdint.h> 175981881dSAndrii Nakryiko #include "libbpf_common.h" 185981881dSAndrii Nakryiko 195981881dSAndrii Nakryiko #ifdef __cplusplus 205981881dSAndrii Nakryiko extern "C" { 215981881dSAndrii Nakryiko #endif 225981881dSAndrii Nakryiko 235981881dSAndrii Nakryiko enum libbpf_strict_mode { 245981881dSAndrii Nakryiko /* Turn on all supported strict features of libbpf to simulate libbpf 255981881dSAndrii Nakryiko * v1.0 behavior. 265981881dSAndrii Nakryiko * This will be the default behavior in libbpf v1.0. 275981881dSAndrii Nakryiko */ 285981881dSAndrii Nakryiko LIBBPF_STRICT_ALL = 0xffffffff, 295981881dSAndrii Nakryiko 305981881dSAndrii Nakryiko /* 315981881dSAndrii Nakryiko * Disable any libbpf 1.0 behaviors. This is the default before libbpf 325981881dSAndrii Nakryiko * v1.0. It won't be supported anymore in v1.0, please update your 335981881dSAndrii Nakryiko * code so that it handles LIBBPF_STRICT_ALL mode before libbpf v1.0. 345981881dSAndrii Nakryiko */ 355981881dSAndrii Nakryiko LIBBPF_STRICT_NONE = 0x00, 36f12b6543SAndrii Nakryiko /* 37f12b6543SAndrii Nakryiko * Return NULL pointers on error, not ERR_PTR(err). 38f12b6543SAndrii Nakryiko * Additionally, libbpf also always sets errno to corresponding Exx 39f12b6543SAndrii Nakryiko * (positive) error code. 40f12b6543SAndrii Nakryiko */ 41f12b6543SAndrii Nakryiko LIBBPF_STRICT_CLEAN_PTRS = 0x01, 42f12b6543SAndrii Nakryiko /* 43f12b6543SAndrii Nakryiko * Return actual error codes from low-level APIs directly, not just -1. 44f12b6543SAndrii Nakryiko * Additionally, libbpf also always sets errno to corresponding Exx 45f12b6543SAndrii Nakryiko * (positive) error code. 46f12b6543SAndrii Nakryiko */ 47f12b6543SAndrii Nakryiko LIBBPF_STRICT_DIRECT_ERRS = 0x02, 485981881dSAndrii Nakryiko 49dd94d45cSAndrii Nakryiko /* 50dd94d45cSAndrii Nakryiko * Enforce strict BPF program section (SEC()) names. 51dd94d45cSAndrii Nakryiko * E.g., while prefiously SEC("xdp_whatever") or SEC("perf_event_blah") were 52dd94d45cSAndrii Nakryiko * allowed, with LIBBPF_STRICT_SEC_PREFIX this will become 53dd94d45cSAndrii Nakryiko * unrecognized by libbpf and would have to be just SEC("xdp") and 54dd94d45cSAndrii Nakryiko * SEC("xdp") and SEC("perf_event"). 55*a77f879bSStanislav Fomichev * 56*a77f879bSStanislav Fomichev * Note, in this mode the program pin path will be based on the 57*a77f879bSStanislav Fomichev * function name instead of section name. 58dd94d45cSAndrii Nakryiko */ 59dd94d45cSAndrii Nakryiko LIBBPF_STRICT_SEC_NAME = 0x04, 60dd94d45cSAndrii Nakryiko 615981881dSAndrii Nakryiko __LIBBPF_STRICT_LAST, 625981881dSAndrii Nakryiko }; 635981881dSAndrii Nakryiko 645981881dSAndrii Nakryiko LIBBPF_API int libbpf_set_strict_mode(enum libbpf_strict_mode mode); 655981881dSAndrii Nakryiko 665981881dSAndrii Nakryiko 675981881dSAndrii Nakryiko #ifdef __cplusplus 685981881dSAndrii Nakryiko } /* extern "C" */ 695981881dSAndrii Nakryiko #endif 705981881dSAndrii Nakryiko 715981881dSAndrii Nakryiko #endif /* __LIBBPF_LEGACY_BPF_H */ 72