123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475 |
- // SPDX-License-Identifier: LGPL-2.1
- /*
- * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
- * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
- * Copyright (C) 2015 Huawei Inc.
- * Copyright (C) 2017 Nicira, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License (not later!)
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not, see <http://www.gnu.org/licenses>
- */
- #undef _GNU_SOURCE
- #include <stdio.h>
- #include <string.h>
- #include "libbpf.h"
- #define ERRNO_OFFSET(e) ((e) - __LIBBPF_ERRNO__START)
- #define ERRCODE_OFFSET(c) ERRNO_OFFSET(LIBBPF_ERRNO__##c)
- #define NR_ERRNO (__LIBBPF_ERRNO__END - __LIBBPF_ERRNO__START)
- static const char *libbpf_strerror_table[NR_ERRNO] = {
- [ERRCODE_OFFSET(LIBELF)] = "Something wrong in libelf",
- [ERRCODE_OFFSET(FORMAT)] = "BPF object format invalid",
- [ERRCODE_OFFSET(KVERSION)] = "'version' section incorrect or lost",
- [ERRCODE_OFFSET(ENDIAN)] = "Endian mismatch",
- [ERRCODE_OFFSET(INTERNAL)] = "Internal error in libbpf",
- [ERRCODE_OFFSET(RELOC)] = "Relocation failed",
- [ERRCODE_OFFSET(VERIFY)] = "Kernel verifier blocks program loading",
- [ERRCODE_OFFSET(PROG2BIG)] = "Program too big",
- [ERRCODE_OFFSET(KVER)] = "Incorrect kernel version",
- [ERRCODE_OFFSET(PROGTYPE)] = "Kernel doesn't support this program type",
- [ERRCODE_OFFSET(WRNGPID)] = "Wrong pid in netlink message",
- [ERRCODE_OFFSET(INVSEQ)] = "Invalid netlink sequence",
- };
- int libbpf_strerror(int err, char *buf, size_t size)
- {
- if (!buf || !size)
- return -1;
- err = err > 0 ? err : -err;
- if (err < __LIBBPF_ERRNO__START) {
- int ret;
- ret = strerror_r(err, buf, size);
- buf[size - 1] = '\0';
- return ret;
- }
- if (err < __LIBBPF_ERRNO__END) {
- const char *msg;
- msg = libbpf_strerror_table[ERRNO_OFFSET(err)];
- snprintf(buf, size, "%s", msg);
- buf[size - 1] = '\0';
- return 0;
- }
- snprintf(buf, size, "Unknown libbpf error %d", err);
- buf[size - 1] = '\0';
- return -1;
- }
|