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-rw-r--r--tools/lib/bpf/Build2
-rw-r--r--tools/lib/bpf/btf.c1
-rw-r--r--tools/lib/bpf/btf_dump.c1
-rw-r--r--tools/lib/bpf/elf.c1
-rw-r--r--tools/lib/bpf/features.c1
-rw-r--r--tools/lib/bpf/gen_loader.c3
-rw-r--r--tools/lib/bpf/libbpf.c101
-rw-r--r--tools/lib/bpf/libbpf_errno.c75
-rw-r--r--tools/lib/bpf/libbpf_internal.h15
-rw-r--r--tools/lib/bpf/libbpf_utils.c252
-rw-r--r--tools/lib/bpf/linker.c1
-rw-r--r--tools/lib/bpf/relo_core.c1
-rw-r--r--tools/lib/bpf/ringbuf.c1
-rw-r--r--tools/lib/bpf/str_error.c104
-rw-r--r--tools/lib/bpf/str_error.h19
-rw-r--r--tools/lib/bpf/usdt.c1
16 files changed, 269 insertions, 310 deletions
diff --git a/tools/lib/bpf/Build b/tools/lib/bpf/Build
index e2cd558ca0b4..c80204bb72a2 100644
--- a/tools/lib/bpf/Build
+++ b/tools/lib/bpf/Build
@@ -1,4 +1,4 @@
-libbpf-y := libbpf.o bpf.o nlattr.o btf.o libbpf_errno.o str_error.o \
+libbpf-y := libbpf.o bpf.o nlattr.o btf.o libbpf_utils.o \
netlink.o bpf_prog_linfo.o libbpf_probes.o hashmap.o \
btf_dump.o ringbuf.o strset.o linker.o gen_loader.o relo_core.o \
usdt.o zip.o elf.o features.o btf_iter.o btf_relocate.o
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 37682908cb0f..18907f0fcf9f 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -23,7 +23,6 @@
#include "libbpf_internal.h"
#include "hashmap.h"
#include "strset.h"
-#include "str_error.h"
#define BTF_MAX_NR_TYPES 0x7fffffffU
#define BTF_MAX_STR_OFFSET 0x7fffffffU
diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index f09f25eccf3c..6388392f49a0 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -21,7 +21,6 @@
#include "hashmap.h"
#include "libbpf.h"
#include "libbpf_internal.h"
-#include "str_error.h"
static const char PREFIXES[] = "\t\t\t\t\t\t\t\t\t\t\t\t\t";
static const size_t PREFIX_CNT = sizeof(PREFIXES) - 1;
diff --git a/tools/lib/bpf/elf.c b/tools/lib/bpf/elf.c
index 823f83ad819c..295dbda24580 100644
--- a/tools/lib/bpf/elf.c
+++ b/tools/lib/bpf/elf.c
@@ -9,7 +9,6 @@
#include <linux/kernel.h>
#include "libbpf_internal.h"
-#include "str_error.h"
/* A SHT_GNU_versym section holds 16-bit words. This bit is set if
* the symbol is hidden and can only be seen when referenced using an
diff --git a/tools/lib/bpf/features.c b/tools/lib/bpf/features.c
index 760657f5224c..b842b83e2480 100644
--- a/tools/lib/bpf/features.c
+++ b/tools/lib/bpf/features.c
@@ -6,7 +6,6 @@
#include "libbpf.h"
#include "libbpf_common.h"
#include "libbpf_internal.h"
-#include "str_error.h"
static inline __u64 ptr_to_u64(const void *ptr)
{
diff --git a/tools/lib/bpf/gen_loader.c b/tools/lib/bpf/gen_loader.c
index 6945dd99a846..cd5c2543f54d 100644
--- a/tools/lib/bpf/gen_loader.c
+++ b/tools/lib/bpf/gen_loader.c
@@ -4,6 +4,7 @@
#include <stdlib.h>
#include <string.h>
#include <errno.h>
+#include <asm/byteorder.h>
#include <linux/filter.h>
#include <sys/param.h>
#include "btf.h"
@@ -13,8 +14,6 @@
#include "hashmap.h"
#include "bpf_gen_internal.h"
#include "skel_internal.h"
-#include <asm/byteorder.h>
-#include "str_error.h"
#define MAX_USED_MAPS 64
#define MAX_USED_PROGS 32
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index f92083f51bdb..dd3b2f57082d 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -35,7 +35,6 @@
#include <linux/perf_event.h>
#include <linux/bpf_perf_event.h>
#include <linux/ring_buffer.h>
-#include <linux/unaligned.h>
#include <sys/epoll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
@@ -51,7 +50,6 @@
#include "libbpf.h"
#include "bpf.h"
#include "btf.h"
-#include "str_error.h"
#include "libbpf_internal.h"
#include "hashmap.h"
#include "bpf_gen_internal.h"
@@ -319,8 +317,6 @@ static void pr_perm_msg(int err)
buf);
}
-#define STRERR_BUFSIZE 128
-
/* Copied from tools/perf/util/util.h */
#ifndef zfree
# define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
@@ -14285,100 +14281,3 @@ void bpf_object__destroy_skeleton(struct bpf_object_skeleton *s)
free(s->progs);
free(s);
}
-
-static inline __u32 ror32(__u32 v, int bits)
-{
- return (v >> bits) | (v << (32 - bits));
-}
-
-#define SHA256_BLOCK_LENGTH 64
-#define Ch(x, y, z) (((x) & (y)) ^ (~(x) & (z)))
-#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
-#define Sigma_0(x) (ror32((x), 2) ^ ror32((x), 13) ^ ror32((x), 22))
-#define Sigma_1(x) (ror32((x), 6) ^ ror32((x), 11) ^ ror32((x), 25))
-#define sigma_0(x) (ror32((x), 7) ^ ror32((x), 18) ^ ((x) >> 3))
-#define sigma_1(x) (ror32((x), 17) ^ ror32((x), 19) ^ ((x) >> 10))
-
-static const __u32 sha256_K[64] = {
- 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
- 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
- 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
- 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
- 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
- 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
- 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
- 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
- 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
- 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
- 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
-};
-
-#define SHA256_ROUND(i, a, b, c, d, e, f, g, h) \
- { \
- __u32 tmp = h + Sigma_1(e) + Ch(e, f, g) + sha256_K[i] + w[i]; \
- d += tmp; \
- h = tmp + Sigma_0(a) + Maj(a, b, c); \
- }
-
-static void sha256_blocks(__u32 state[8], const __u8 *data, size_t nblocks)
-{
- while (nblocks--) {
- __u32 a = state[0];
- __u32 b = state[1];
- __u32 c = state[2];
- __u32 d = state[3];
- __u32 e = state[4];
- __u32 f = state[5];
- __u32 g = state[6];
- __u32 h = state[7];
- __u32 w[64];
- int i;
-
- for (i = 0; i < 16; i++)
- w[i] = get_unaligned_be32(&data[4 * i]);
- for (; i < ARRAY_SIZE(w); i++)
- w[i] = sigma_1(w[i - 2]) + w[i - 7] +
- sigma_0(w[i - 15]) + w[i - 16];
- for (i = 0; i < ARRAY_SIZE(w); i += 8) {
- SHA256_ROUND(i + 0, a, b, c, d, e, f, g, h);
- SHA256_ROUND(i + 1, h, a, b, c, d, e, f, g);
- SHA256_ROUND(i + 2, g, h, a, b, c, d, e, f);
- SHA256_ROUND(i + 3, f, g, h, a, b, c, d, e);
- SHA256_ROUND(i + 4, e, f, g, h, a, b, c, d);
- SHA256_ROUND(i + 5, d, e, f, g, h, a, b, c);
- SHA256_ROUND(i + 6, c, d, e, f, g, h, a, b);
- SHA256_ROUND(i + 7, b, c, d, e, f, g, h, a);
- }
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
- state[5] += f;
- state[6] += g;
- state[7] += h;
- data += SHA256_BLOCK_LENGTH;
- }
-}
-
-void libbpf_sha256(const void *data, size_t len, __u8 out[SHA256_DIGEST_LENGTH])
-{
- __u32 state[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
- 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };
- const __be64 bitcount = cpu_to_be64((__u64)len * 8);
- __u8 final_data[2 * SHA256_BLOCK_LENGTH] = { 0 };
- size_t final_len = len % SHA256_BLOCK_LENGTH;
- int i;
-
- sha256_blocks(state, data, len / SHA256_BLOCK_LENGTH);
-
- memcpy(final_data, data + len - final_len, final_len);
- final_data[final_len] = 0x80;
- final_len = round_up(final_len + 9, SHA256_BLOCK_LENGTH);
- memcpy(&final_data[final_len - 8], &bitcount, 8);
-
- sha256_blocks(state, final_data, final_len / SHA256_BLOCK_LENGTH);
-
- for (i = 0; i < ARRAY_SIZE(state); i++)
- put_unaligned_be32(state[i], &out[4 * i]);
-}
diff --git a/tools/lib/bpf/libbpf_errno.c b/tools/lib/bpf/libbpf_errno.c
deleted file mode 100644
index 6b180172ec6b..000000000000
--- a/tools/lib/bpf/libbpf_errno.c
+++ /dev/null
@@ -1,75 +0,0 @@
-// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-
-/*
- * 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.
- */
-
-#undef _GNU_SOURCE
-#include <stdio.h>
-#include <string.h>
-
-#include "libbpf.h"
-#include "libbpf_internal.h"
-
-/* make sure libbpf doesn't use kernel-only integer typedefs */
-#pragma GCC poison u8 u16 u32 u64 s8 s16 s32 s64
-
-#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",
- [ERRCODE_OFFSET(NLPARSE)] = "Incorrect netlink message parsing",
-};
-
-int libbpf_strerror(int err, char *buf, size_t size)
-{
- int ret;
-
- if (!buf || !size)
- return libbpf_err(-EINVAL);
-
- err = err > 0 ? err : -err;
-
- if (err < __LIBBPF_ERRNO__START) {
- ret = strerror_r(err, buf, size);
- buf[size - 1] = '\0';
- return libbpf_err_errno(ret);
- }
-
- if (err < __LIBBPF_ERRNO__END) {
- const char *msg;
-
- msg = libbpf_strerror_table[ERRNO_OFFSET(err)];
- ret = snprintf(buf, size, "%s", msg);
- buf[size - 1] = '\0';
- /* The length of the buf and msg is positive.
- * A negative number may be returned only when the
- * size exceeds INT_MAX. Not likely to appear.
- */
- if (ret >= size)
- return libbpf_err(-ERANGE);
- return 0;
- }
-
- ret = snprintf(buf, size, "Unknown libbpf error %d", err);
- buf[size - 1] = '\0';
- if (ret >= size)
- return libbpf_err(-ERANGE);
- return libbpf_err(-ENOENT);
-}
diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h
index c93797dcaf5b..35b2527bedec 100644
--- a/tools/lib/bpf/libbpf_internal.h
+++ b/tools/lib/bpf/libbpf_internal.h
@@ -172,6 +172,16 @@ do { \
#define pr_info(fmt, ...) __pr(LIBBPF_INFO, fmt, ##__VA_ARGS__)
#define pr_debug(fmt, ...) __pr(LIBBPF_DEBUG, fmt, ##__VA_ARGS__)
+/**
+ * @brief **libbpf_errstr()** returns string corresponding to numeric errno
+ * @param err negative numeric errno
+ * @return pointer to string representation of the errno, that is invalidated
+ * upon the next call.
+ */
+const char *libbpf_errstr(int err);
+
+#define errstr(err) libbpf_errstr(err)
+
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
@@ -712,6 +722,11 @@ static inline bool is_pow_of_2(size_t x)
return x && (x & (x - 1)) == 0;
}
+static inline __u32 ror32(__u32 v, int bits)
+{
+ return (v >> bits) | (v << (32 - bits));
+}
+
#define PROG_LOAD_ATTEMPTS 5
int sys_bpf_prog_load(union bpf_attr *attr, unsigned int size, int attempts);
diff --git a/tools/lib/bpf/libbpf_utils.c b/tools/lib/bpf/libbpf_utils.c
new file mode 100644
index 000000000000..5d66bc6ff098
--- /dev/null
+++ b/tools/lib/bpf/libbpf_utils.c
@@ -0,0 +1,252 @@
+// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
+
+/*
+ * 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.
+ */
+
+#undef _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <linux/kernel.h>
+
+#include "libbpf.h"
+#include "libbpf_internal.h"
+
+#ifndef ENOTSUPP
+#define ENOTSUPP 524
+#endif
+
+/* make sure libbpf doesn't use kernel-only integer typedefs */
+#pragma GCC poison u8 u16 u32 u64 s8 s16 s32 s64
+
+#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",
+ [ERRCODE_OFFSET(NLPARSE)] = "Incorrect netlink message parsing",
+};
+
+int libbpf_strerror(int err, char *buf, size_t size)
+{
+ int ret;
+
+ if (!buf || !size)
+ return libbpf_err(-EINVAL);
+
+ err = err > 0 ? err : -err;
+
+ if (err < __LIBBPF_ERRNO__START) {
+ ret = strerror_r(err, buf, size);
+ buf[size - 1] = '\0';
+ return libbpf_err_errno(ret);
+ }
+
+ if (err < __LIBBPF_ERRNO__END) {
+ const char *msg;
+
+ msg = libbpf_strerror_table[ERRNO_OFFSET(err)];
+ ret = snprintf(buf, size, "%s", msg);
+ buf[size - 1] = '\0';
+ /* The length of the buf and msg is positive.
+ * A negative number may be returned only when the
+ * size exceeds INT_MAX. Not likely to appear.
+ */
+ if (ret >= size)
+ return libbpf_err(-ERANGE);
+ return 0;
+ }
+
+ ret = snprintf(buf, size, "Unknown libbpf error %d", err);
+ buf[size - 1] = '\0';
+ if (ret >= size)
+ return libbpf_err(-ERANGE);
+ return libbpf_err(-ENOENT);
+}
+
+const char *libbpf_errstr(int err)
+{
+ static __thread char buf[12];
+
+ if (err > 0)
+ err = -err;
+
+ switch (err) {
+ case -E2BIG: return "-E2BIG";
+ case -EACCES: return "-EACCES";
+ case -EADDRINUSE: return "-EADDRINUSE";
+ case -EADDRNOTAVAIL: return "-EADDRNOTAVAIL";
+ case -EAGAIN: return "-EAGAIN";
+ case -EALREADY: return "-EALREADY";
+ case -EBADF: return "-EBADF";
+ case -EBADFD: return "-EBADFD";
+ case -EBUSY: return "-EBUSY";
+ case -ECANCELED: return "-ECANCELED";
+ case -ECHILD: return "-ECHILD";
+ case -EDEADLK: return "-EDEADLK";
+ case -EDOM: return "-EDOM";
+ case -EEXIST: return "-EEXIST";
+ case -EFAULT: return "-EFAULT";
+ case -EFBIG: return "-EFBIG";
+ case -EILSEQ: return "-EILSEQ";
+ case -EINPROGRESS: return "-EINPROGRESS";
+ case -EINTR: return "-EINTR";
+ case -EINVAL: return "-EINVAL";
+ case -EIO: return "-EIO";
+ case -EISDIR: return "-EISDIR";
+ case -ELOOP: return "-ELOOP";
+ case -EMFILE: return "-EMFILE";
+ case -EMLINK: return "-EMLINK";
+ case -EMSGSIZE: return "-EMSGSIZE";
+ case -ENAMETOOLONG: return "-ENAMETOOLONG";
+ case -ENFILE: return "-ENFILE";
+ case -ENODATA: return "-ENODATA";
+ case -ENODEV: return "-ENODEV";
+ case -ENOENT: return "-ENOENT";
+ case -ENOEXEC: return "-ENOEXEC";
+ case -ENOLINK: return "-ENOLINK";
+ case -ENOMEM: return "-ENOMEM";
+ case -ENOSPC: return "-ENOSPC";
+ case -ENOTBLK: return "-ENOTBLK";
+ case -ENOTDIR: return "-ENOTDIR";
+ case -ENOTSUPP: return "-ENOTSUPP";
+ case -ENOTTY: return "-ENOTTY";
+ case -ENXIO: return "-ENXIO";
+ case -EOPNOTSUPP: return "-EOPNOTSUPP";
+ case -EOVERFLOW: return "-EOVERFLOW";
+ case -EPERM: return "-EPERM";
+ case -EPIPE: return "-EPIPE";
+ case -EPROTO: return "-EPROTO";
+ case -EPROTONOSUPPORT: return "-EPROTONOSUPPORT";
+ case -ERANGE: return "-ERANGE";
+ case -EROFS: return "-EROFS";
+ case -ESPIPE: return "-ESPIPE";
+ case -ESRCH: return "-ESRCH";
+ case -ETXTBSY: return "-ETXTBSY";
+ case -EUCLEAN: return "-EUCLEAN";
+ case -EXDEV: return "-EXDEV";
+ default:
+ snprintf(buf, sizeof(buf), "%d", err);
+ return buf;
+ }
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpacked"
+#pragma GCC diagnostic ignored "-Wattributes"
+struct __packed_u32 { __u32 __val; } __attribute__((packed));
+#pragma GCC diagnostic pop
+
+#define get_unaligned_be32(p) be32_to_cpu((((struct __packed_u32 *)(p))->__val))
+#define put_unaligned_be32(v, p) do { \
+ ((struct __packed_u32 *)(p))->__val = cpu_to_be32(v); \
+} while (0)
+
+#define SHA256_BLOCK_LENGTH 64
+#define Ch(x, y, z) (((x) & (y)) ^ (~(x) & (z)))
+#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+#define Sigma_0(x) (ror32((x), 2) ^ ror32((x), 13) ^ ror32((x), 22))
+#define Sigma_1(x) (ror32((x), 6) ^ ror32((x), 11) ^ ror32((x), 25))
+#define sigma_0(x) (ror32((x), 7) ^ ror32((x), 18) ^ ((x) >> 3))
+#define sigma_1(x) (ror32((x), 17) ^ ror32((x), 19) ^ ((x) >> 10))
+
+static const __u32 sha256_K[64] = {
+ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
+ 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+ 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
+ 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+ 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
+ 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+ 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
+ 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+ 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
+ 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+ 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
+};
+
+#define SHA256_ROUND(i, a, b, c, d, e, f, g, h) \
+ { \
+ __u32 tmp = h + Sigma_1(e) + Ch(e, f, g) + sha256_K[i] + w[i]; \
+ d += tmp; \
+ h = tmp + Sigma_0(a) + Maj(a, b, c); \
+ }
+
+static void sha256_blocks(__u32 state[8], const __u8 *data, size_t nblocks)
+{
+ while (nblocks--) {
+ __u32 a = state[0];
+ __u32 b = state[1];
+ __u32 c = state[2];
+ __u32 d = state[3];
+ __u32 e = state[4];
+ __u32 f = state[5];
+ __u32 g = state[6];
+ __u32 h = state[7];
+ __u32 w[64];
+ int i;
+
+ for (i = 0; i < 16; i++)
+ w[i] = get_unaligned_be32(&data[4 * i]);
+ for (; i < ARRAY_SIZE(w); i++)
+ w[i] = sigma_1(w[i - 2]) + w[i - 7] +
+ sigma_0(w[i - 15]) + w[i - 16];
+ for (i = 0; i < ARRAY_SIZE(w); i += 8) {
+ SHA256_ROUND(i + 0, a, b, c, d, e, f, g, h);
+ SHA256_ROUND(i + 1, h, a, b, c, d, e, f, g);
+ SHA256_ROUND(i + 2, g, h, a, b, c, d, e, f);
+ SHA256_ROUND(i + 3, f, g, h, a, b, c, d, e);
+ SHA256_ROUND(i + 4, e, f, g, h, a, b, c, d);
+ SHA256_ROUND(i + 5, d, e, f, g, h, a, b, c);
+ SHA256_ROUND(i + 6, c, d, e, f, g, h, a, b);
+ SHA256_ROUND(i + 7, b, c, d, e, f, g, h, a);
+ }
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
+ state[5] += f;
+ state[6] += g;
+ state[7] += h;
+ data += SHA256_BLOCK_LENGTH;
+ }
+}
+
+void libbpf_sha256(const void *data, size_t len, __u8 out[SHA256_DIGEST_LENGTH])
+{
+ __u32 state[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
+ 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };
+ const __be64 bitcount = cpu_to_be64((__u64)len * 8);
+ __u8 final_data[2 * SHA256_BLOCK_LENGTH] = { 0 };
+ size_t final_len = len % SHA256_BLOCK_LENGTH;
+ int i;
+
+ sha256_blocks(state, data, len / SHA256_BLOCK_LENGTH);
+
+ memcpy(final_data, data + len - final_len, final_len);
+ final_data[final_len] = 0x80;
+ final_len = roundup(final_len + 9, SHA256_BLOCK_LENGTH);
+ memcpy(&final_data[final_len - 8], &bitcount, 8);
+
+ sha256_blocks(state, final_data, final_len / SHA256_BLOCK_LENGTH);
+
+ for (i = 0; i < ARRAY_SIZE(state); i++)
+ put_unaligned_be32(state[i], &out[4 * i]);
+}
diff --git a/tools/lib/bpf/linker.c b/tools/lib/bpf/linker.c
index a469e5d4fee7..56ae77047bc3 100644
--- a/tools/lib/bpf/linker.c
+++ b/tools/lib/bpf/linker.c
@@ -25,7 +25,6 @@
#include "btf.h"
#include "libbpf_internal.h"
#include "strset.h"
-#include "str_error.h"
#define BTF_EXTERN_SEC ".extern"
diff --git a/tools/lib/bpf/relo_core.c b/tools/lib/bpf/relo_core.c
index 2b83c98a1137..6eea5edba58a 100644
--- a/tools/lib/bpf/relo_core.c
+++ b/tools/lib/bpf/relo_core.c
@@ -64,7 +64,6 @@ enum libbpf_print_level {
#include "libbpf.h"
#include "bpf.h"
#include "btf.h"
-#include "str_error.h"
#include "libbpf_internal.h"
#endif
diff --git a/tools/lib/bpf/ringbuf.c b/tools/lib/bpf/ringbuf.c
index 9702b70da444..00ec4837a06d 100644
--- a/tools/lib/bpf/ringbuf.c
+++ b/tools/lib/bpf/ringbuf.c
@@ -21,7 +21,6 @@
#include "libbpf.h"
#include "libbpf_internal.h"
#include "bpf.h"
-#include "str_error.h"
struct ring {
ring_buffer_sample_fn sample_cb;
diff --git a/tools/lib/bpf/str_error.c b/tools/lib/bpf/str_error.c
deleted file mode 100644
index 9a541762f54c..000000000000
--- a/tools/lib/bpf/str_error.c
+++ /dev/null
@@ -1,104 +0,0 @@
-// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-#undef _GNU_SOURCE
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include "str_error.h"
-
-#ifndef ENOTSUPP
-#define ENOTSUPP 524
-#endif
-
-/* make sure libbpf doesn't use kernel-only integer typedefs */
-#pragma GCC poison u8 u16 u32 u64 s8 s16 s32 s64
-
-/*
- * Wrapper to allow for building in non-GNU systems such as Alpine Linux's musl
- * libc, while checking strerror_r() return to avoid having to check this in
- * all places calling it.
- */
-char *libbpf_strerror_r(int err, char *dst, int len)
-{
- int ret = strerror_r(err < 0 ? -err : err, dst, len);
- /* on glibc <2.13, ret == -1 and errno is set, if strerror_r() can't
- * handle the error, on glibc >=2.13 *positive* (errno-like) error
- * code is returned directly
- */
- if (ret == -1)
- ret = errno;
- if (ret) {
- if (ret == EINVAL)
- /* strerror_r() doesn't recognize this specific error */
- snprintf(dst, len, "unknown error (%d)", err < 0 ? err : -err);
- else
- snprintf(dst, len, "ERROR: strerror_r(%d)=%d", err, ret);
- }
- return dst;
-}
-
-const char *libbpf_errstr(int err)
-{
- static __thread char buf[12];
-
- if (err > 0)
- err = -err;
-
- switch (err) {
- case -E2BIG: return "-E2BIG";
- case -EACCES: return "-EACCES";
- case -EADDRINUSE: return "-EADDRINUSE";
- case -EADDRNOTAVAIL: return "-EADDRNOTAVAIL";
- case -EAGAIN: return "-EAGAIN";
- case -EALREADY: return "-EALREADY";
- case -EBADF: return "-EBADF";
- case -EBADFD: return "-EBADFD";
- case -EBUSY: return "-EBUSY";
- case -ECANCELED: return "-ECANCELED";
- case -ECHILD: return "-ECHILD";
- case -EDEADLK: return "-EDEADLK";
- case -EDOM: return "-EDOM";
- case -EEXIST: return "-EEXIST";
- case -EFAULT: return "-EFAULT";
- case -EFBIG: return "-EFBIG";
- case -EILSEQ: return "-EILSEQ";
- case -EINPROGRESS: return "-EINPROGRESS";
- case -EINTR: return "-EINTR";
- case -EINVAL: return "-EINVAL";
- case -EIO: return "-EIO";
- case -EISDIR: return "-EISDIR";
- case -ELOOP: return "-ELOOP";
- case -EMFILE: return "-EMFILE";
- case -EMLINK: return "-EMLINK";
- case -EMSGSIZE: return "-EMSGSIZE";
- case -ENAMETOOLONG: return "-ENAMETOOLONG";
- case -ENFILE: return "-ENFILE";
- case -ENODATA: return "-ENODATA";
- case -ENODEV: return "-ENODEV";
- case -ENOENT: return "-ENOENT";
- case -ENOEXEC: return "-ENOEXEC";
- case -ENOLINK: return "-ENOLINK";
- case -ENOMEM: return "-ENOMEM";
- case -ENOSPC: return "-ENOSPC";
- case -ENOTBLK: return "-ENOTBLK";
- case -ENOTDIR: return "-ENOTDIR";
- case -ENOTSUPP: return "-ENOTSUPP";
- case -ENOTTY: return "-ENOTTY";
- case -ENXIO: return "-ENXIO";
- case -EOPNOTSUPP: return "-EOPNOTSUPP";
- case -EOVERFLOW: return "-EOVERFLOW";
- case -EPERM: return "-EPERM";
- case -EPIPE: return "-EPIPE";
- case -EPROTO: return "-EPROTO";
- case -EPROTONOSUPPORT: return "-EPROTONOSUPPORT";
- case -ERANGE: return "-ERANGE";
- case -EROFS: return "-EROFS";
- case -ESPIPE: return "-ESPIPE";
- case -ESRCH: return "-ESRCH";
- case -ETXTBSY: return "-ETXTBSY";
- case -EUCLEAN: return "-EUCLEAN";
- case -EXDEV: return "-EXDEV";
- default:
- snprintf(buf, sizeof(buf), "%d", err);
- return buf;
- }
-}
diff --git a/tools/lib/bpf/str_error.h b/tools/lib/bpf/str_error.h
deleted file mode 100644
index 53e7fbffc13e..000000000000
--- a/tools/lib/bpf/str_error.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
-#ifndef __LIBBPF_STR_ERROR_H
-#define __LIBBPF_STR_ERROR_H
-
-#define STRERR_BUFSIZE 128
-
-char *libbpf_strerror_r(int err, char *dst, int len);
-
-/**
- * @brief **libbpf_errstr()** returns string corresponding to numeric errno
- * @param err negative numeric errno
- * @return pointer to string representation of the errno, that is invalidated
- * upon the next call.
- */
-const char *libbpf_errstr(int err);
-
-#define errstr(err) libbpf_errstr(err)
-
-#endif /* __LIBBPF_STR_ERROR_H */
diff --git a/tools/lib/bpf/usdt.c b/tools/lib/bpf/usdt.c
index fc2785eecc17..c174b4086673 100644
--- a/tools/lib/bpf/usdt.c
+++ b/tools/lib/bpf/usdt.c
@@ -20,7 +20,6 @@
#include "libbpf_common.h"
#include "libbpf_internal.h"
#include "hashmap.h"
-#include "str_error.h"
/* libbpf's USDT support consists of BPF-side state/code and user-space
* state/code working together in concert. BPF-side parts are defined in
generated by cgit (git 2.34.1) at 2025-10-04 15:18:00 +0000