+++ /dev/null
-From 60faff684bdf676de5b464d9b8b3402759052ebb Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 11 Nov 2024 21:29:17 +0000
-Subject: libbpf: Stringify errno in log messages in libbpf.c
-
-From: Mykyta Yatsenko <yatsenko@meta.com>
-
-[ Upstream commit 271abf041cb354ce99df33ce1f99db79faf90477 ]
-
-Convert numeric error codes into the string representations in log
-messages in libbpf.c.
-
-Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
-Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
-Link: https://lore.kernel.org/bpf/20241111212919.368971-3-mykyta.yatsenko5@gmail.com
-Stable-dep-of: 380044c40b16 ("libbpf: Prevent double close and leak of btf objects")
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- tools/lib/bpf/libbpf.c | 356 ++++++++++++++++++-----------------------
- 1 file changed, 156 insertions(+), 200 deletions(-)
-
-diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
-index 791488efec27d..9c94d56e79764 100644
---- a/tools/lib/bpf/libbpf.c
-+++ b/tools/lib/bpf/libbpf.c
-@@ -1534,11 +1534,8 @@ static int bpf_object__elf_init(struct bpf_object *obj)
- } else {
- obj->efile.fd = open(obj->path, O_RDONLY | O_CLOEXEC);
- if (obj->efile.fd < 0) {
-- char errmsg[STRERR_BUFSIZE], *cp;
--
- err = -errno;
-- cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg));
-- pr_warn("elf: failed to open %s: %s\n", obj->path, cp);
-+ pr_warn("elf: failed to open %s: %s\n", obj->path, errstr(err));
- return err;
- }
-
-@@ -1938,8 +1935,7 @@ bpf_object__init_internal_map(struct bpf_object *obj, enum libbpf_map_type type,
- if (map->mmaped == MAP_FAILED) {
- err = -errno;
- map->mmaped = NULL;
-- pr_warn("failed to alloc map '%s' content buffer: %d\n",
-- map->name, err);
-+ pr_warn("failed to alloc map '%s' content buffer: %s\n", map->name, errstr(err));
- zfree(&map->real_name);
- zfree(&map->name);
- return err;
-@@ -2103,7 +2099,7 @@ static int parse_u64(const char *value, __u64 *res)
- *res = strtoull(value, &value_end, 0);
- if (errno) {
- err = -errno;
-- pr_warn("failed to parse '%s' as integer: %d\n", value, err);
-+ pr_warn("failed to parse '%s': %s\n", value, errstr(err));
- return err;
- }
- if (*value_end) {
-@@ -2269,8 +2265,8 @@ static int bpf_object__read_kconfig_file(struct bpf_object *obj, void *data)
- while (gzgets(file, buf, sizeof(buf))) {
- err = bpf_object__process_kconfig_line(obj, buf, data);
- if (err) {
-- pr_warn("error parsing system Kconfig line '%s': %d\n",
-- buf, err);
-+ pr_warn("error parsing system Kconfig line '%s': %s\n",
-+ buf, errstr(err));
- goto out;
- }
- }
-@@ -2290,15 +2286,15 @@ static int bpf_object__read_kconfig_mem(struct bpf_object *obj,
- file = fmemopen((void *)config, strlen(config), "r");
- if (!file) {
- err = -errno;
-- pr_warn("failed to open in-memory Kconfig: %d\n", err);
-+ pr_warn("failed to open in-memory Kconfig: %s\n", errstr(err));
- return err;
- }
-
- while (fgets(buf, sizeof(buf), file)) {
- err = bpf_object__process_kconfig_line(obj, buf, data);
- if (err) {
-- pr_warn("error parsing in-memory Kconfig line '%s': %d\n",
-- buf, err);
-+ pr_warn("error parsing in-memory Kconfig line '%s': %s\n",
-+ buf, errstr(err));
- break;
- }
- }
-@@ -3213,7 +3209,7 @@ static int bpf_object__init_btf(struct bpf_object *obj,
- err = libbpf_get_error(obj->btf);
- if (err) {
- obj->btf = NULL;
-- pr_warn("Error loading ELF section %s: %d.\n", BTF_ELF_SEC, err);
-+ pr_warn("Error loading ELF section %s: %s.\n", BTF_ELF_SEC, errstr(err));
- goto out;
- }
- /* enforce 8-byte pointers for BPF-targeted BTFs */
-@@ -3231,8 +3227,8 @@ static int bpf_object__init_btf(struct bpf_object *obj,
- obj->btf_ext = btf_ext__new(btf_ext_data->d_buf, btf_ext_data->d_size);
- err = libbpf_get_error(obj->btf_ext);
- if (err) {
-- pr_warn("Error loading ELF section %s: %d. Ignored and continue.\n",
-- BTF_EXT_ELF_SEC, err);
-+ pr_warn("Error loading ELF section %s: %s. Ignored and continue.\n",
-+ BTF_EXT_ELF_SEC, errstr(err));
- obj->btf_ext = NULL;
- goto out;
- }
-@@ -3324,8 +3320,8 @@ static int btf_fixup_datasec(struct bpf_object *obj, struct btf *btf,
- if (t->size == 0) {
- err = find_elf_sec_sz(obj, sec_name, &size);
- if (err || !size) {
-- pr_debug("sec '%s': failed to determine size from ELF: size %u, err %d\n",
-- sec_name, size, err);
-+ pr_debug("sec '%s': failed to determine size from ELF: size %u, err %s\n",
-+ sec_name, size, errstr(err));
- return -ENOENT;
- }
-
-@@ -3479,7 +3475,7 @@ static int bpf_object__load_vmlinux_btf(struct bpf_object *obj, bool force)
- obj->btf_vmlinux = btf__load_vmlinux_btf();
- err = libbpf_get_error(obj->btf_vmlinux);
- if (err) {
-- pr_warn("Error loading vmlinux BTF: %d\n", err);
-+ pr_warn("Error loading vmlinux BTF: %s\n", errstr(err));
- obj->btf_vmlinux = NULL;
- return err;
- }
-@@ -3583,9 +3579,11 @@ static int bpf_object__sanitize_and_load_btf(struct bpf_object *obj)
- if (err) {
- btf_mandatory = kernel_needs_btf(obj);
- if (btf_mandatory) {
-- pr_warn("Error loading .BTF into kernel: %d. BTF is mandatory, can't proceed.\n", err);
-+ pr_warn("Error loading .BTF into kernel: %s. BTF is mandatory, can't proceed.\n",
-+ errstr(err));
- } else {
-- pr_info("Error loading .BTF into kernel: %d. BTF is optional, ignoring.\n", err);
-+ pr_info("Error loading .BTF into kernel: %s. BTF is optional, ignoring.\n",
-+ errstr(err));
- err = 0;
- }
- }
-@@ -4797,8 +4795,8 @@ static int bpf_get_map_info_from_fdinfo(int fd, struct bpf_map_info *info)
- fp = fopen(file, "re");
- if (!fp) {
- err = -errno;
-- pr_warn("failed to open %s: %d. No procfs support?\n", file,
-- err);
-+ pr_warn("failed to open %s: %s. No procfs support?\n", file,
-+ errstr(err));
- return err;
- }
-
-@@ -4953,8 +4951,8 @@ static int bpf_object_prepare_token(struct bpf_object *obj)
- bpffs_fd = open(bpffs_path, O_DIRECTORY, O_RDWR);
- if (bpffs_fd < 0) {
- err = -errno;
-- __pr(level, "object '%s': failed (%d) to open BPF FS mount at '%s'%s\n",
-- obj->name, err, bpffs_path,
-+ __pr(level, "object '%s': failed (%s) to open BPF FS mount at '%s'%s\n",
-+ obj->name, errstr(err), bpffs_path,
- mandatory ? "" : ", skipping optional step...");
- return mandatory ? err : 0;
- }
-@@ -4988,7 +4986,6 @@ static int bpf_object_prepare_token(struct bpf_object *obj)
- static int
- bpf_object__probe_loading(struct bpf_object *obj)
- {
-- char *cp, errmsg[STRERR_BUFSIZE];
- struct bpf_insn insns[] = {
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
-@@ -5004,7 +5001,8 @@ bpf_object__probe_loading(struct bpf_object *obj)
-
- ret = bump_rlimit_memlock();
- if (ret)
-- pr_warn("Failed to bump RLIMIT_MEMLOCK (err = %d), you might need to do it explicitly!\n", ret);
-+ pr_warn("Failed to bump RLIMIT_MEMLOCK (err = %s), you might need to do it explicitly!\n",
-+ errstr(ret));
-
- /* make sure basic loading works */
- ret = bpf_prog_load(BPF_PROG_TYPE_SOCKET_FILTER, NULL, "GPL", insns, insn_cnt, &opts);
-@@ -5012,11 +5010,8 @@ bpf_object__probe_loading(struct bpf_object *obj)
- ret = bpf_prog_load(BPF_PROG_TYPE_TRACEPOINT, NULL, "GPL", insns, insn_cnt, &opts);
- if (ret < 0) {
- ret = errno;
-- cp = libbpf_strerror_r(ret, errmsg, sizeof(errmsg));
-- pr_warn("Error in %s():%s(%d). Couldn't load trivial BPF "
-- "program. Make sure your kernel supports BPF "
-- "(CONFIG_BPF_SYSCALL=y) and/or that RLIMIT_MEMLOCK is "
-- "set to big enough value.\n", __func__, cp, ret);
-+ pr_warn("Error in %s(): %s. Couldn't load trivial BPF program. Make sure your kernel supports BPF (CONFIG_BPF_SYSCALL=y) and/or that RLIMIT_MEMLOCK is set to big enough value.\n",
-+ __func__, errstr(ret));
- return -ret;
- }
- close(ret);
-@@ -5041,7 +5036,6 @@ bool kernel_supports(const struct bpf_object *obj, enum kern_feature_id feat_id)
- static bool map_is_reuse_compat(const struct bpf_map *map, int map_fd)
- {
- struct bpf_map_info map_info;
-- char msg[STRERR_BUFSIZE];
- __u32 map_info_len = sizeof(map_info);
- int err;
-
-@@ -5051,7 +5045,7 @@ static bool map_is_reuse_compat(const struct bpf_map *map, int map_fd)
- err = bpf_get_map_info_from_fdinfo(map_fd, &map_info);
- if (err) {
- pr_warn("failed to get map info for map FD %d: %s\n", map_fd,
-- libbpf_strerror_r(errno, msg, sizeof(msg)));
-+ errstr(err));
- return false;
- }
-
-@@ -5076,7 +5070,6 @@ static bool map_is_reuse_compat(const struct bpf_map *map, int map_fd)
- static int
- bpf_object__reuse_map(struct bpf_map *map)
- {
-- char *cp, errmsg[STRERR_BUFSIZE];
- int err, pin_fd;
-
- pin_fd = bpf_obj_get(map->pin_path);
-@@ -5088,9 +5081,8 @@ bpf_object__reuse_map(struct bpf_map *map)
- return 0;
- }
-
-- cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
- pr_warn("couldn't retrieve pinned map '%s': %s\n",
-- map->pin_path, cp);
-+ map->pin_path, errstr(err));
- return err;
- }
-
-@@ -5116,7 +5108,6 @@ static int
- bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map)
- {
- enum libbpf_map_type map_type = map->libbpf_type;
-- char *cp, errmsg[STRERR_BUFSIZE];
- int err, zero = 0;
- size_t mmap_sz;
-
-@@ -5131,9 +5122,8 @@ bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map)
- err = bpf_map_update_elem(map->fd, &zero, map->mmaped, 0);
- if (err) {
- err = -errno;
-- cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg));
- pr_warn("map '%s': failed to set initial contents: %s\n",
-- bpf_map__name(map), cp);
-+ bpf_map__name(map), errstr(err));
- return err;
- }
-
-@@ -5142,9 +5132,8 @@ bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map)
- err = bpf_map_freeze(map->fd);
- if (err) {
- err = -errno;
-- cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg));
- pr_warn("map '%s': failed to freeze as read-only: %s\n",
-- bpf_map__name(map), cp);
-+ bpf_map__name(map), errstr(err));
- return err;
- }
- }
-@@ -5170,8 +5159,8 @@ bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map)
- mmaped = mmap(map->mmaped, mmap_sz, prot, MAP_SHARED | MAP_FIXED, map->fd, 0);
- if (mmaped == MAP_FAILED) {
- err = -errno;
-- pr_warn("map '%s': failed to re-mmap() contents: %d\n",
-- bpf_map__name(map), err);
-+ pr_warn("map '%s': failed to re-mmap() contents: %s\n",
-+ bpf_map__name(map), errstr(err));
- return err;
- }
- map->mmaped = mmaped;
-@@ -5228,8 +5217,8 @@ static int bpf_object__create_map(struct bpf_object *obj, struct bpf_map *map, b
- return err;
- err = bpf_object__create_map(obj, map->inner_map, true);
- if (err) {
-- pr_warn("map '%s': failed to create inner map: %d\n",
-- map->name, err);
-+ pr_warn("map '%s': failed to create inner map: %s\n",
-+ map->name, errstr(err));
- return err;
- }
- map->inner_map_fd = map->inner_map->fd;
-@@ -5283,12 +5272,9 @@ static int bpf_object__create_map(struct bpf_object *obj, struct bpf_map *map, b
- def->max_entries, &create_attr);
- }
- if (map_fd < 0 && (create_attr.btf_key_type_id || create_attr.btf_value_type_id)) {
-- char *cp, errmsg[STRERR_BUFSIZE];
--
- err = -errno;
-- cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg));
-- pr_warn("Error in bpf_create_map_xattr(%s):%s(%d). Retrying without BTF.\n",
-- map->name, cp, err);
-+ pr_warn("Error in bpf_create_map_xattr(%s): %s. Retrying without BTF.\n",
-+ map->name, errstr(err));
- create_attr.btf_fd = 0;
- create_attr.btf_key_type_id = 0;
- create_attr.btf_value_type_id = 0;
-@@ -5343,8 +5329,8 @@ static int init_map_in_map_slots(struct bpf_object *obj, struct bpf_map *map)
- }
- if (err) {
- err = -errno;
-- pr_warn("map '%s': failed to initialize slot [%d] to map '%s' fd=%d: %d\n",
-- map->name, i, targ_map->name, fd, err);
-+ pr_warn("map '%s': failed to initialize slot [%d] to map '%s' fd=%d: %s\n",
-+ map->name, i, targ_map->name, fd, errstr(err));
- return err;
- }
- pr_debug("map '%s': slot [%d] set to map '%s' fd=%d\n",
-@@ -5376,8 +5362,8 @@ static int init_prog_array_slots(struct bpf_object *obj, struct bpf_map *map)
- err = bpf_map_update_elem(map->fd, &i, &fd, 0);
- if (err) {
- err = -errno;
-- pr_warn("map '%s': failed to initialize slot [%d] to prog '%s' fd=%d: %d\n",
-- map->name, i, targ_prog->name, fd, err);
-+ pr_warn("map '%s': failed to initialize slot [%d] to prog '%s' fd=%d: %s\n",
-+ map->name, i, targ_prog->name, fd, errstr(err));
- return err;
- }
- pr_debug("map '%s': slot [%d] set to prog '%s' fd=%d\n",
-@@ -5430,7 +5416,6 @@ static int
- bpf_object__create_maps(struct bpf_object *obj)
- {
- struct bpf_map *map;
-- char *cp, errmsg[STRERR_BUFSIZE];
- unsigned int i, j;
- int err;
- bool retried;
-@@ -5504,8 +5489,8 @@ bpf_object__create_maps(struct bpf_object *obj)
- if (map->mmaped == MAP_FAILED) {
- err = -errno;
- map->mmaped = NULL;
-- pr_warn("map '%s': failed to mmap arena: %d\n",
-- map->name, err);
-+ pr_warn("map '%s': failed to mmap arena: %s\n",
-+ map->name, errstr(err));
- return err;
- }
- if (obj->arena_data) {
-@@ -5527,8 +5512,8 @@ bpf_object__create_maps(struct bpf_object *obj)
- retried = true;
- goto retry;
- }
-- pr_warn("map '%s': failed to auto-pin at '%s': %d\n",
-- map->name, map->pin_path, err);
-+ pr_warn("map '%s': failed to auto-pin at '%s': %s\n",
-+ map->name, map->pin_path, errstr(err));
- goto err_out;
- }
- }
-@@ -5537,8 +5522,7 @@ bpf_object__create_maps(struct bpf_object *obj)
- return 0;
-
- err_out:
-- cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg));
-- pr_warn("map '%s': failed to create: %s(%d)\n", map->name, cp, err);
-+ pr_warn("map '%s': failed to create: %s\n", map->name, errstr(err));
- pr_perm_msg(err);
- for (j = 0; j < i; j++)
- zclose(obj->maps[j].fd);
-@@ -5662,7 +5646,7 @@ static int load_module_btfs(struct bpf_object *obj)
- }
- if (err) {
- err = -errno;
-- pr_warn("failed to iterate BTF objects: %d\n", err);
-+ pr_warn("failed to iterate BTF objects: %s\n", errstr(err));
- return err;
- }
-
-@@ -5671,7 +5655,7 @@ static int load_module_btfs(struct bpf_object *obj)
- if (errno == ENOENT)
- continue; /* expected race: BTF was unloaded */
- err = -errno;
-- pr_warn("failed to get BTF object #%d FD: %d\n", id, err);
-+ pr_warn("failed to get BTF object #%d FD: %s\n", id, errstr(err));
- return err;
- }
-
-@@ -5683,7 +5667,7 @@ static int load_module_btfs(struct bpf_object *obj)
- err = bpf_btf_get_info_by_fd(fd, &info, &len);
- if (err) {
- err = -errno;
-- pr_warn("failed to get BTF object #%d info: %d\n", id, err);
-+ pr_warn("failed to get BTF object #%d info: %s\n", id, errstr(err));
- goto err_out;
- }
-
-@@ -5696,8 +5680,8 @@ static int load_module_btfs(struct bpf_object *obj)
- btf = btf_get_from_fd(fd, obj->btf_vmlinux);
- err = libbpf_get_error(btf);
- if (err) {
-- pr_warn("failed to load module [%s]'s BTF object #%d: %d\n",
-- name, id, err);
-+ pr_warn("failed to load module [%s]'s BTF object #%d: %s\n",
-+ name, id, errstr(err));
- goto err_out;
- }
-
-@@ -5926,7 +5910,7 @@ bpf_object__relocate_core(struct bpf_object *obj, const char *targ_btf_path)
- obj->btf_vmlinux_override = btf__parse(targ_btf_path, NULL);
- err = libbpf_get_error(obj->btf_vmlinux_override);
- if (err) {
-- pr_warn("failed to parse target BTF: %d\n", err);
-+ pr_warn("failed to parse target BTF: %s\n", errstr(err));
- return err;
- }
- }
-@@ -5986,8 +5970,8 @@ bpf_object__relocate_core(struct bpf_object *obj, const char *targ_btf_path)
-
- err = record_relo_core(prog, rec, insn_idx);
- if (err) {
-- pr_warn("prog '%s': relo #%d: failed to record relocation: %d\n",
-- prog->name, i, err);
-+ pr_warn("prog '%s': relo #%d: failed to record relocation: %s\n",
-+ prog->name, i, errstr(err));
- goto out;
- }
-
-@@ -5996,15 +5980,15 @@ bpf_object__relocate_core(struct bpf_object *obj, const char *targ_btf_path)
-
- err = bpf_core_resolve_relo(prog, rec, i, obj->btf, cand_cache, &targ_res);
- if (err) {
-- pr_warn("prog '%s': relo #%d: failed to relocate: %d\n",
-- prog->name, i, err);
-+ pr_warn("prog '%s': relo #%d: failed to relocate: %s\n",
-+ prog->name, i, errstr(err));
- goto out;
- }
-
- err = bpf_core_patch_insn(prog->name, insn, insn_idx, rec, i, &targ_res);
- if (err) {
-- pr_warn("prog '%s': relo #%d: failed to patch insn #%u: %d\n",
-- prog->name, i, insn_idx, err);
-+ pr_warn("prog '%s': relo #%d: failed to patch insn #%u: %s\n",
-+ prog->name, i, insn_idx, errstr(err));
- goto out;
- }
- }
-@@ -6272,8 +6256,8 @@ reloc_prog_func_and_line_info(const struct bpf_object *obj,
- &main_prog->func_info_rec_size);
- if (err) {
- if (err != -ENOENT) {
-- pr_warn("prog '%s': error relocating .BTF.ext function info: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': error relocating .BTF.ext function info: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
- if (main_prog->func_info) {
-@@ -6300,8 +6284,8 @@ reloc_prog_func_and_line_info(const struct bpf_object *obj,
- &main_prog->line_info_rec_size);
- if (err) {
- if (err != -ENOENT) {
-- pr_warn("prog '%s': error relocating .BTF.ext line info: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': error relocating .BTF.ext line info: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
- if (main_prog->line_info) {
-@@ -7065,8 +7049,8 @@ static int bpf_object__relocate(struct bpf_object *obj, const char *targ_btf_pat
- if (obj->btf_ext) {
- err = bpf_object__relocate_core(obj, targ_btf_path);
- if (err) {
-- pr_warn("failed to perform CO-RE relocations: %d\n",
-- err);
-+ pr_warn("failed to perform CO-RE relocations: %s\n",
-+ errstr(err));
- return err;
- }
- bpf_object__sort_relos(obj);
-@@ -7110,8 +7094,8 @@ static int bpf_object__relocate(struct bpf_object *obj, const char *targ_btf_pat
-
- err = bpf_object__relocate_calls(obj, prog);
- if (err) {
-- pr_warn("prog '%s': failed to relocate calls: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': failed to relocate calls: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
-
-@@ -7147,16 +7131,16 @@ static int bpf_object__relocate(struct bpf_object *obj, const char *targ_btf_pat
- /* Process data relos for main programs */
- err = bpf_object__relocate_data(obj, prog);
- if (err) {
-- pr_warn("prog '%s': failed to relocate data references: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': failed to relocate data references: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
-
- /* Fix up .BTF.ext information, if necessary */
- err = bpf_program_fixup_func_info(obj, prog);
- if (err) {
-- pr_warn("prog '%s': failed to perform .BTF.ext fix ups: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': failed to perform .BTF.ext fix ups: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
- }
-@@ -7465,7 +7449,6 @@ static int bpf_object_load_prog(struct bpf_object *obj, struct bpf_program *prog
- {
- LIBBPF_OPTS(bpf_prog_load_opts, load_attr);
- const char *prog_name = NULL;
-- char *cp, errmsg[STRERR_BUFSIZE];
- size_t log_buf_size = 0;
- char *log_buf = NULL, *tmp;
- bool own_log_buf = true;
-@@ -7529,8 +7512,8 @@ static int bpf_object_load_prog(struct bpf_object *obj, struct bpf_program *prog
- if (prog->sec_def && prog->sec_def->prog_prepare_load_fn) {
- err = prog->sec_def->prog_prepare_load_fn(prog, &load_attr, prog->sec_def->cookie);
- if (err < 0) {
-- pr_warn("prog '%s': failed to prepare load attributes: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': failed to prepare load attributes: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
- insns = prog->insns;
-@@ -7594,9 +7577,8 @@ static int bpf_object_load_prog(struct bpf_object *obj, struct bpf_program *prog
- continue;
-
- if (bpf_prog_bind_map(ret, map->fd, NULL)) {
-- cp = libbpf_strerror_r(errno, errmsg, sizeof(errmsg));
- pr_warn("prog '%s': failed to bind map '%s': %s\n",
-- prog->name, map->real_name, cp);
-+ prog->name, map->real_name, errstr(errno));
- /* Don't fail hard if can't bind rodata. */
- }
- }
-@@ -7626,8 +7608,7 @@ static int bpf_object_load_prog(struct bpf_object *obj, struct bpf_program *prog
- /* post-process verifier log to improve error descriptions */
- fixup_verifier_log(prog, log_buf, log_buf_size);
-
-- cp = libbpf_strerror_r(errno, errmsg, sizeof(errmsg));
-- pr_warn("prog '%s': BPF program load failed: %s\n", prog->name, cp);
-+ pr_warn("prog '%s': BPF program load failed: %s\n", prog->name, errstr(errno));
- pr_perm_msg(ret);
-
- if (own_log_buf && log_buf && log_buf[0] != '\0') {
-@@ -7920,7 +7901,7 @@ bpf_object__load_progs(struct bpf_object *obj, int log_level)
- err = bpf_object_load_prog(obj, prog, prog->insns, prog->insns_cnt,
- obj->license, obj->kern_version, &prog->fd);
- if (err) {
-- pr_warn("prog '%s': failed to load: %d\n", prog->name, err);
-+ pr_warn("prog '%s': failed to load: %s\n", prog->name, errstr(err));
- return err;
- }
- }
-@@ -7954,8 +7935,8 @@ static int bpf_object_init_progs(struct bpf_object *obj, const struct bpf_object
- if (prog->sec_def->prog_setup_fn) {
- err = prog->sec_def->prog_setup_fn(prog, prog->sec_def->cookie);
- if (err < 0) {
-- pr_warn("prog '%s': failed to initialize: %d\n",
-- prog->name, err);
-+ pr_warn("prog '%s': failed to initialize: %s\n",
-+ prog->name, errstr(err));
- return err;
- }
- }
-@@ -8145,7 +8126,7 @@ static int libbpf_kallsyms_parse(kallsyms_cb_t cb, void *ctx)
- f = fopen("/proc/kallsyms", "re");
- if (!f) {
- err = -errno;
-- pr_warn("failed to open /proc/kallsyms: %d\n", err);
-+ pr_warn("failed to open /proc/kallsyms: %s\n", errstr(err));
- return err;
- }
-
-@@ -8622,7 +8603,6 @@ int bpf_object__load(struct bpf_object *obj)
-
- static int make_parent_dir(const char *path)
- {
-- char *cp, errmsg[STRERR_BUFSIZE];
- char *dname, *dir;
- int err = 0;
-
-@@ -8636,15 +8616,13 @@ static int make_parent_dir(const char *path)
-
- free(dname);
- if (err) {
-- cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
-- pr_warn("failed to mkdir %s: %s\n", path, cp);
-+ pr_warn("failed to mkdir %s: %s\n", path, errstr(err));
- }
- return err;
- }
-
- static int check_path(const char *path)
- {
-- char *cp, errmsg[STRERR_BUFSIZE];
- struct statfs st_fs;
- char *dname, *dir;
- int err = 0;
-@@ -8658,8 +8636,7 @@ static int check_path(const char *path)
-
- dir = dirname(dname);
- if (statfs(dir, &st_fs)) {
-- cp = libbpf_strerror_r(errno, errmsg, sizeof(errmsg));
-- pr_warn("failed to statfs %s: %s\n", dir, cp);
-+ pr_warn("failed to statfs %s: %s\n", dir, errstr(errno));
- err = -errno;
- }
- free(dname);
-@@ -8674,7 +8651,6 @@ static int check_path(const char *path)
-
- int bpf_program__pin(struct bpf_program *prog, const char *path)
- {
-- char *cp, errmsg[STRERR_BUFSIZE];
- int err;
-
- if (prog->fd < 0) {
-@@ -8692,8 +8668,7 @@ int bpf_program__pin(struct bpf_program *prog, const char *path)
-
- if (bpf_obj_pin(prog->fd, path)) {
- err = -errno;
-- cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg));
-- pr_warn("prog '%s': failed to pin at '%s': %s\n", prog->name, path, cp);
-+ pr_warn("prog '%s': failed to pin at '%s': %s\n", prog->name, path, errstr(err));
- return libbpf_err(err);
- }
-
-@@ -8724,7 +8699,6 @@ int bpf_program__unpin(struct bpf_program *prog, const char *path)
-
- int bpf_map__pin(struct bpf_map *map, const char *path)
- {
-- char *cp, errmsg[STRERR_BUFSIZE];
- int err;
-
- if (map == NULL) {
-@@ -8783,8 +8757,7 @@ int bpf_map__pin(struct bpf_map *map, const char *path)
- return 0;
-
- out_err:
-- cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
-- pr_warn("failed to pin map: %s\n", cp);
-+ pr_warn("failed to pin map: %s\n", errstr(err));
- return libbpf_err(err);
- }
-
-@@ -9972,8 +9945,8 @@ static int libbpf_find_prog_btf_id(const char *name, __u32 attach_prog_fd)
- memset(&info, 0, info_len);
- err = bpf_prog_get_info_by_fd(attach_prog_fd, &info, &info_len);
- if (err) {
-- pr_warn("failed bpf_prog_get_info_by_fd for FD %d: %d\n",
-- attach_prog_fd, err);
-+ pr_warn("failed bpf_prog_get_info_by_fd for FD %d: %s\n",
-+ attach_prog_fd, errstr(err));
- return err;
- }
-
-@@ -9985,7 +9958,7 @@ static int libbpf_find_prog_btf_id(const char *name, __u32 attach_prog_fd)
- btf = btf__load_from_kernel_by_id(info.btf_id);
- err = libbpf_get_error(btf);
- if (err) {
-- pr_warn("Failed to get BTF %d of the program: %d\n", info.btf_id, err);
-+ pr_warn("Failed to get BTF %d of the program: %s\n", info.btf_id, errstr(err));
- goto out;
- }
- err = btf__find_by_name_kind(btf, name, BTF_KIND_FUNC);
-@@ -10067,8 +10040,8 @@ static int libbpf_find_attach_btf_id(struct bpf_program *prog, const char *attac
- }
- err = libbpf_find_prog_btf_id(attach_name, attach_prog_fd);
- if (err < 0) {
-- pr_warn("prog '%s': failed to find BPF program (FD %d) BTF ID for '%s': %d\n",
-- prog->name, attach_prog_fd, attach_name, err);
-+ pr_warn("prog '%s': failed to find BPF program (FD %d) BTF ID for '%s': %s\n",
-+ prog->name, attach_prog_fd, attach_name, errstr(err));
- return err;
- }
- *btf_obj_fd = 0;
-@@ -10087,8 +10060,8 @@ static int libbpf_find_attach_btf_id(struct bpf_program *prog, const char *attac
- btf_type_id);
- }
- if (err) {
-- pr_warn("prog '%s': failed to find kernel BTF type ID of '%s': %d\n",
-- prog->name, attach_name, err);
-+ pr_warn("prog '%s': failed to find kernel BTF type ID of '%s': %s\n",
-+ prog->name, attach_name, errstr(err));
- return err;
- }
- return 0;
-@@ -10316,14 +10289,14 @@ int bpf_map__set_value_size(struct bpf_map *map, __u32 size)
- mmap_new_sz = array_map_mmap_sz(size, map->def.max_entries);
- err = bpf_map_mmap_resize(map, mmap_old_sz, mmap_new_sz);
- if (err) {
-- pr_warn("map '%s': failed to resize memory-mapped region: %d\n",
-- bpf_map__name(map), err);
-+ pr_warn("map '%s': failed to resize memory-mapped region: %s\n",
-+ bpf_map__name(map), errstr(err));
- return err;
- }
- err = map_btf_datasec_resize(map, size);
- if (err && err != -ENOENT) {
-- pr_warn("map '%s': failed to adjust resized BTF, clearing BTF key/value info: %d\n",
-- bpf_map__name(map), err);
-+ pr_warn("map '%s': failed to adjust resized BTF, clearing BTF key/value info: %s\n",
-+ bpf_map__name(map), errstr(err));
- map->btf_value_type_id = 0;
- map->btf_key_type_id = 0;
- }
-@@ -10814,7 +10787,6 @@ static void bpf_link_perf_dealloc(struct bpf_link *link)
- struct bpf_link *bpf_program__attach_perf_event_opts(const struct bpf_program *prog, int pfd,
- const struct bpf_perf_event_opts *opts)
- {
-- char errmsg[STRERR_BUFSIZE];
- struct bpf_link_perf *link;
- int prog_fd, link_fd = -1, err;
- bool force_ioctl_attach;
-@@ -10849,9 +10821,8 @@ struct bpf_link *bpf_program__attach_perf_event_opts(const struct bpf_program *p
- link_fd = bpf_link_create(prog_fd, pfd, BPF_PERF_EVENT, &link_opts);
- if (link_fd < 0) {
- err = -errno;
-- pr_warn("prog '%s': failed to create BPF link for perf_event FD %d: %d (%s)\n",
-- prog->name, pfd,
-- err, libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ pr_warn("prog '%s': failed to create BPF link for perf_event FD %d: %s\n",
-+ prog->name, pfd, errstr(err));
- goto err_out;
- }
- link->link.fd = link_fd;
-@@ -10865,7 +10836,7 @@ struct bpf_link *bpf_program__attach_perf_event_opts(const struct bpf_program *p
- if (ioctl(pfd, PERF_EVENT_IOC_SET_BPF, prog_fd) < 0) {
- err = -errno;
- pr_warn("prog '%s': failed to attach to perf_event FD %d: %s\n",
-- prog->name, pfd, libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ prog->name, pfd, errstr(err));
- if (err == -EPROTO)
- pr_warn("prog '%s': try add PERF_SAMPLE_CALLCHAIN to or remove exclude_callchain_[kernel|user] from pfd %d\n",
- prog->name, pfd);
-@@ -10876,7 +10847,7 @@ struct bpf_link *bpf_program__attach_perf_event_opts(const struct bpf_program *p
- if (ioctl(pfd, PERF_EVENT_IOC_ENABLE, 0) < 0) {
- err = -errno;
- pr_warn("prog '%s': failed to enable perf_event FD %d: %s\n",
-- prog->name, pfd, libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ prog->name, pfd, errstr(err));
- goto err_out;
- }
-
-@@ -10900,22 +10871,19 @@ struct bpf_link *bpf_program__attach_perf_event(const struct bpf_program *prog,
- */
- static int parse_uint_from_file(const char *file, const char *fmt)
- {
-- char buf[STRERR_BUFSIZE];
- int err, ret;
- FILE *f;
-
- f = fopen(file, "re");
- if (!f) {
- err = -errno;
-- pr_debug("failed to open '%s': %s\n", file,
-- libbpf_strerror_r(err, buf, sizeof(buf)));
-+ pr_debug("failed to open '%s': %s\n", file, errstr(err));
- return err;
- }
- err = fscanf(f, fmt, &ret);
- if (err != 1) {
- err = err == EOF ? -EIO : -errno;
-- pr_debug("failed to parse '%s': %s\n", file,
-- libbpf_strerror_r(err, buf, sizeof(buf)));
-+ pr_debug("failed to parse '%s': %s\n", file, errstr(err));
- fclose(f);
- return err;
- }
-@@ -10959,7 +10927,6 @@ static int perf_event_open_probe(bool uprobe, bool retprobe, const char *name,
- {
- const size_t attr_sz = sizeof(struct perf_event_attr);
- struct perf_event_attr attr;
-- char errmsg[STRERR_BUFSIZE];
- int type, pfd;
-
- if ((__u64)ref_ctr_off >= (1ULL << PERF_UPROBE_REF_CTR_OFFSET_BITS))
-@@ -10972,7 +10939,7 @@ static int perf_event_open_probe(bool uprobe, bool retprobe, const char *name,
- if (type < 0) {
- pr_warn("failed to determine %s perf type: %s\n",
- uprobe ? "uprobe" : "kprobe",
-- libbpf_strerror_r(type, errmsg, sizeof(errmsg)));
-+ errstr(type));
- return type;
- }
- if (retprobe) {
-@@ -10982,7 +10949,7 @@ static int perf_event_open_probe(bool uprobe, bool retprobe, const char *name,
- if (bit < 0) {
- pr_warn("failed to determine %s retprobe bit: %s\n",
- uprobe ? "uprobe" : "kprobe",
-- libbpf_strerror_r(bit, errmsg, sizeof(errmsg)));
-+ errstr(bit));
- return bit;
- }
- attr.config |= 1 << bit;
-@@ -11111,14 +11078,13 @@ static int perf_event_kprobe_open_legacy(const char *probe_name, bool retprobe,
- {
- const size_t attr_sz = sizeof(struct perf_event_attr);
- struct perf_event_attr attr;
-- char errmsg[STRERR_BUFSIZE];
- int type, pfd, err;
-
- err = add_kprobe_event_legacy(probe_name, retprobe, kfunc_name, offset);
- if (err < 0) {
- pr_warn("failed to add legacy kprobe event for '%s+0x%zx': %s\n",
- kfunc_name, offset,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- return err;
- }
- type = determine_kprobe_perf_type_legacy(probe_name, retprobe);
-@@ -11126,7 +11092,7 @@ static int perf_event_kprobe_open_legacy(const char *probe_name, bool retprobe,
- err = type;
- pr_warn("failed to determine legacy kprobe event id for '%s+0x%zx': %s\n",
- kfunc_name, offset,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- goto err_clean_legacy;
- }
-
-@@ -11142,7 +11108,7 @@ static int perf_event_kprobe_open_legacy(const char *probe_name, bool retprobe,
- if (pfd < 0) {
- err = -errno;
- pr_warn("legacy kprobe perf_event_open() failed: %s\n",
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- goto err_clean_legacy;
- }
- return pfd;
-@@ -11218,7 +11184,6 @@ bpf_program__attach_kprobe_opts(const struct bpf_program *prog,
- {
- DECLARE_LIBBPF_OPTS(bpf_perf_event_opts, pe_opts);
- enum probe_attach_mode attach_mode;
-- char errmsg[STRERR_BUFSIZE];
- char *legacy_probe = NULL;
- struct bpf_link *link;
- size_t offset;
-@@ -11276,7 +11241,7 @@ bpf_program__attach_kprobe_opts(const struct bpf_program *prog,
- pr_warn("prog '%s': failed to create %s '%s+0x%zx' perf event: %s\n",
- prog->name, retprobe ? "kretprobe" : "kprobe",
- func_name, offset,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- goto err_out;
- }
- link = bpf_program__attach_perf_event_opts(prog, pfd, &pe_opts);
-@@ -11286,7 +11251,7 @@ bpf_program__attach_kprobe_opts(const struct bpf_program *prog,
- pr_warn("prog '%s': failed to attach to %s '%s+0x%zx': %s\n",
- prog->name, retprobe ? "kretprobe" : "kprobe",
- func_name, offset,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- goto err_clean_legacy;
- }
- if (legacy) {
-@@ -11422,7 +11387,7 @@ static int libbpf_available_kallsyms_parse(struct kprobe_multi_resolve *res)
- f = fopen(available_functions_file, "re");
- if (!f) {
- err = -errno;
-- pr_warn("failed to open %s: %d\n", available_functions_file, err);
-+ pr_warn("failed to open %s: %s\n", available_functions_file, errstr(err));
- return err;
- }
-
-@@ -11497,7 +11462,7 @@ static int libbpf_available_kprobes_parse(struct kprobe_multi_resolve *res)
- f = fopen(available_path, "re");
- if (!f) {
- err = -errno;
-- pr_warn("failed to open %s: %d\n", available_path, err);
-+ pr_warn("failed to open %s: %s\n", available_path, errstr(err));
- return err;
- }
-
-@@ -11543,7 +11508,6 @@ bpf_program__attach_kprobe_multi_opts(const struct bpf_program *prog,
- };
- enum bpf_attach_type attach_type;
- struct bpf_link *link = NULL;
-- char errmsg[STRERR_BUFSIZE];
- const unsigned long *addrs;
- int err, link_fd, prog_fd;
- bool retprobe, session;
-@@ -11611,7 +11575,7 @@ bpf_program__attach_kprobe_multi_opts(const struct bpf_program *prog,
- if (link_fd < 0) {
- err = -errno;
- pr_warn("prog '%s': failed to attach: %s\n",
-- prog->name, libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ prog->name, errstr(err));
- goto error;
- }
- link->fd = link_fd;
-@@ -11804,15 +11768,15 @@ static int perf_event_uprobe_open_legacy(const char *probe_name, bool retprobe,
-
- err = add_uprobe_event_legacy(probe_name, retprobe, binary_path, offset);
- if (err < 0) {
-- pr_warn("failed to add legacy uprobe event for %s:0x%zx: %d\n",
-- binary_path, (size_t)offset, err);
-+ pr_warn("failed to add legacy uprobe event for %s:0x%zx: %s\n",
-+ binary_path, (size_t)offset, errstr(err));
- return err;
- }
- type = determine_uprobe_perf_type_legacy(probe_name, retprobe);
- if (type < 0) {
- err = type;
-- pr_warn("failed to determine legacy uprobe event id for %s:0x%zx: %d\n",
-- binary_path, offset, err);
-+ pr_warn("failed to determine legacy uprobe event id for %s:0x%zx: %s\n",
-+ binary_path, offset, errstr(err));
- goto err_clean_legacy;
- }
-
-@@ -11827,7 +11791,7 @@ static int perf_event_uprobe_open_legacy(const char *probe_name, bool retprobe,
- -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC);
- if (pfd < 0) {
- err = -errno;
-- pr_warn("legacy uprobe perf_event_open() failed: %d\n", err);
-+ pr_warn("legacy uprobe perf_event_open() failed: %s\n", errstr(err));
- goto err_clean_legacy;
- }
- return pfd;
-@@ -11992,7 +11956,6 @@ bpf_program__attach_uprobe_multi(const struct bpf_program *prog,
- unsigned long *resolved_offsets = NULL;
- int err = 0, link_fd, prog_fd;
- struct bpf_link *link = NULL;
-- char errmsg[STRERR_BUFSIZE];
- char full_path[PATH_MAX];
- const __u64 *cookies;
- const char **syms;
-@@ -12045,8 +12008,8 @@ bpf_program__attach_uprobe_multi(const struct bpf_program *prog,
- if (!strchr(path, '/')) {
- err = resolve_full_path(path, full_path, sizeof(full_path));
- if (err) {
-- pr_warn("prog '%s': failed to resolve full path for '%s': %d\n",
-- prog->name, path, err);
-+ pr_warn("prog '%s': failed to resolve full path for '%s': %s\n",
-+ prog->name, path, errstr(err));
- return libbpf_err_ptr(err);
- }
- path = full_path;
-@@ -12087,7 +12050,7 @@ bpf_program__attach_uprobe_multi(const struct bpf_program *prog,
- if (link_fd < 0) {
- err = -errno;
- pr_warn("prog '%s': failed to attach multi-uprobe: %s\n",
-- prog->name, libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ prog->name, errstr(err));
- goto error;
- }
- link->fd = link_fd;
-@@ -12106,7 +12069,7 @@ bpf_program__attach_uprobe_opts(const struct bpf_program *prog, pid_t pid,
- const struct bpf_uprobe_opts *opts)
- {
- const char *archive_path = NULL, *archive_sep = NULL;
-- char errmsg[STRERR_BUFSIZE], *legacy_probe = NULL;
-+ char *legacy_probe = NULL;
- DECLARE_LIBBPF_OPTS(bpf_perf_event_opts, pe_opts);
- enum probe_attach_mode attach_mode;
- char full_path[PATH_MAX];
-@@ -12138,8 +12101,8 @@ bpf_program__attach_uprobe_opts(const struct bpf_program *prog, pid_t pid,
- } else if (!strchr(binary_path, '/')) {
- err = resolve_full_path(binary_path, full_path, sizeof(full_path));
- if (err) {
-- pr_warn("prog '%s': failed to resolve full path for '%s': %d\n",
-- prog->name, binary_path, err);
-+ pr_warn("prog '%s': failed to resolve full path for '%s': %s\n",
-+ prog->name, binary_path, errstr(err));
- return libbpf_err_ptr(err);
- }
- binary_path = full_path;
-@@ -12206,7 +12169,7 @@ bpf_program__attach_uprobe_opts(const struct bpf_program *prog, pid_t pid,
- pr_warn("prog '%s': failed to create %s '%s:0x%zx' perf event: %s\n",
- prog->name, retprobe ? "uretprobe" : "uprobe",
- binary_path, func_offset,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- goto err_out;
- }
-
-@@ -12217,7 +12180,7 @@ bpf_program__attach_uprobe_opts(const struct bpf_program *prog, pid_t pid,
- pr_warn("prog '%s': failed to attach to %s '%s:0x%zx': %s\n",
- prog->name, retprobe ? "uretprobe" : "uprobe",
- binary_path, func_offset,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- goto err_clean_legacy;
- }
- if (legacy) {
-@@ -12338,8 +12301,8 @@ struct bpf_link *bpf_program__attach_usdt(const struct bpf_program *prog,
- if (!strchr(binary_path, '/')) {
- err = resolve_full_path(binary_path, resolved_path, sizeof(resolved_path));
- if (err) {
-- pr_warn("prog '%s': failed to resolve full path for '%s': %d\n",
-- prog->name, binary_path, err);
-+ pr_warn("prog '%s': failed to resolve full path for '%s': %s\n",
-+ prog->name, binary_path, errstr(err));
- return libbpf_err_ptr(err);
- }
- binary_path = resolved_path;
-@@ -12417,14 +12380,13 @@ static int perf_event_open_tracepoint(const char *tp_category,
- {
- const size_t attr_sz = sizeof(struct perf_event_attr);
- struct perf_event_attr attr;
-- char errmsg[STRERR_BUFSIZE];
- int tp_id, pfd, err;
-
- tp_id = determine_tracepoint_id(tp_category, tp_name);
- if (tp_id < 0) {
- pr_warn("failed to determine tracepoint '%s/%s' perf event ID: %s\n",
- tp_category, tp_name,
-- libbpf_strerror_r(tp_id, errmsg, sizeof(errmsg)));
-+ errstr(tp_id));
- return tp_id;
- }
-
-@@ -12439,7 +12401,7 @@ static int perf_event_open_tracepoint(const char *tp_category,
- err = -errno;
- pr_warn("tracepoint '%s/%s' perf_event_open() failed: %s\n",
- tp_category, tp_name,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- return err;
- }
- return pfd;
-@@ -12451,7 +12413,6 @@ struct bpf_link *bpf_program__attach_tracepoint_opts(const struct bpf_program *p
- const struct bpf_tracepoint_opts *opts)
- {
- DECLARE_LIBBPF_OPTS(bpf_perf_event_opts, pe_opts);
-- char errmsg[STRERR_BUFSIZE];
- struct bpf_link *link;
- int pfd, err;
-
-@@ -12464,7 +12425,7 @@ struct bpf_link *bpf_program__attach_tracepoint_opts(const struct bpf_program *p
- if (pfd < 0) {
- pr_warn("prog '%s': failed to create tracepoint '%s/%s' perf event: %s\n",
- prog->name, tp_category, tp_name,
-- libbpf_strerror_r(pfd, errmsg, sizeof(errmsg)));
-+ errstr(pfd));
- return libbpf_err_ptr(pfd);
- }
- link = bpf_program__attach_perf_event_opts(prog, pfd, &pe_opts);
-@@ -12473,7 +12434,7 @@ struct bpf_link *bpf_program__attach_tracepoint_opts(const struct bpf_program *p
- close(pfd);
- pr_warn("prog '%s': failed to attach to tracepoint '%s/%s': %s\n",
- prog->name, tp_category, tp_name,
-- libbpf_strerror_r(err, errmsg, sizeof(errmsg)));
-+ errstr(err));
- return libbpf_err_ptr(err);
- }
- return link;
-@@ -12524,7 +12485,6 @@ bpf_program__attach_raw_tracepoint_opts(const struct bpf_program *prog,
- struct bpf_raw_tracepoint_opts *opts)
- {
- LIBBPF_OPTS(bpf_raw_tp_opts, raw_opts);
-- char errmsg[STRERR_BUFSIZE];
- struct bpf_link *link;
- int prog_fd, pfd;
-
-@@ -12549,7 +12509,7 @@ bpf_program__attach_raw_tracepoint_opts(const struct bpf_program *prog,
- pfd = -errno;
- free(link);
- pr_warn("prog '%s': failed to attach to raw tracepoint '%s': %s\n",
-- prog->name, tp_name, libbpf_strerror_r(pfd, errmsg, sizeof(errmsg)));
-+ prog->name, tp_name, errstr(pfd));
- return libbpf_err_ptr(pfd);
- }
- link->fd = pfd;
-@@ -12608,7 +12568,6 @@ static struct bpf_link *bpf_program__attach_btf_id(const struct bpf_program *pro
- const struct bpf_trace_opts *opts)
- {
- LIBBPF_OPTS(bpf_link_create_opts, link_opts);
-- char errmsg[STRERR_BUFSIZE];
- struct bpf_link *link;
- int prog_fd, pfd;
-
-@@ -12633,7 +12592,7 @@ static struct bpf_link *bpf_program__attach_btf_id(const struct bpf_program *pro
- pfd = -errno;
- free(link);
- pr_warn("prog '%s': failed to attach: %s\n",
-- prog->name, libbpf_strerror_r(pfd, errmsg, sizeof(errmsg)));
-+ prog->name, errstr(pfd));
- return libbpf_err_ptr(pfd);
- }
- link->fd = pfd;
-@@ -12674,7 +12633,6 @@ bpf_program_attach_fd(const struct bpf_program *prog,
- const struct bpf_link_create_opts *opts)
- {
- enum bpf_attach_type attach_type;
-- char errmsg[STRERR_BUFSIZE];
- struct bpf_link *link;
- int prog_fd, link_fd;
-
-@@ -12696,7 +12654,7 @@ bpf_program_attach_fd(const struct bpf_program *prog,
- free(link);
- pr_warn("prog '%s': failed to attach to %s: %s\n",
- prog->name, target_name,
-- libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg)));
-+ errstr(link_fd));
- return libbpf_err_ptr(link_fd);
- }
- link->fd = link_fd;
-@@ -12838,7 +12796,6 @@ bpf_program__attach_iter(const struct bpf_program *prog,
- const struct bpf_iter_attach_opts *opts)
- {
- DECLARE_LIBBPF_OPTS(bpf_link_create_opts, link_create_opts);
-- char errmsg[STRERR_BUFSIZE];
- struct bpf_link *link;
- int prog_fd, link_fd;
- __u32 target_fd = 0;
-@@ -12866,7 +12823,7 @@ bpf_program__attach_iter(const struct bpf_program *prog,
- link_fd = -errno;
- free(link);
- pr_warn("prog '%s': failed to attach to iterator: %s\n",
-- prog->name, libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg)));
-+ prog->name, errstr(link_fd));
- return libbpf_err_ptr(link_fd);
- }
- link->fd = link_fd;
-@@ -12908,12 +12865,10 @@ struct bpf_link *bpf_program__attach_netfilter(const struct bpf_program *prog,
-
- link_fd = bpf_link_create(prog_fd, 0, BPF_NETFILTER, &lopts);
- if (link_fd < 0) {
-- char errmsg[STRERR_BUFSIZE];
--
- link_fd = -errno;
- free(link);
- pr_warn("prog '%s': failed to attach to netfilter: %s\n",
-- prog->name, libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg)));
-+ prog->name, errstr(link_fd));
- return libbpf_err_ptr(link_fd);
- }
- link->fd = link_fd;
-@@ -13198,7 +13153,6 @@ perf_buffer__open_cpu_buf(struct perf_buffer *pb, struct perf_event_attr *attr,
- int cpu, int map_key)
- {
- struct perf_cpu_buf *cpu_buf;
-- char msg[STRERR_BUFSIZE];
- int err;
-
- cpu_buf = calloc(1, sizeof(*cpu_buf));
-@@ -13214,7 +13168,7 @@ perf_buffer__open_cpu_buf(struct perf_buffer *pb, struct perf_event_attr *attr,
- if (cpu_buf->fd < 0) {
- err = -errno;
- pr_warn("failed to open perf buffer event on cpu #%d: %s\n",
-- cpu, libbpf_strerror_r(err, msg, sizeof(msg)));
-+ cpu, errstr(err));
- goto error;
- }
-
-@@ -13225,14 +13179,14 @@ perf_buffer__open_cpu_buf(struct perf_buffer *pb, struct perf_event_attr *attr,
- cpu_buf->base = NULL;
- err = -errno;
- pr_warn("failed to mmap perf buffer on cpu #%d: %s\n",
-- cpu, libbpf_strerror_r(err, msg, sizeof(msg)));
-+ cpu, errstr(err));
- goto error;
- }
-
- if (ioctl(cpu_buf->fd, PERF_EVENT_IOC_ENABLE, 0) < 0) {
- err = -errno;
- pr_warn("failed to enable perf buffer event on cpu #%d: %s\n",
-- cpu, libbpf_strerror_r(err, msg, sizeof(msg)));
-+ cpu, errstr(err));
- goto error;
- }
-
-@@ -13307,7 +13261,6 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
- {
- const char *online_cpus_file = "/sys/devices/system/cpu/online";
- struct bpf_map_info map;
-- char msg[STRERR_BUFSIZE];
- struct perf_buffer *pb;
- bool *online = NULL;
- __u32 map_info_len;
-@@ -13330,7 +13283,7 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
- */
- if (err != -EINVAL) {
- pr_warn("failed to get map info for map FD %d: %s\n",
-- map_fd, libbpf_strerror_r(err, msg, sizeof(msg)));
-+ map_fd, errstr(err));
- return ERR_PTR(err);
- }
- pr_debug("failed to get map info for FD %d; API not supported? Ignoring...\n",
-@@ -13360,7 +13313,7 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
- if (pb->epoll_fd < 0) {
- err = -errno;
- pr_warn("failed to create epoll instance: %s\n",
-- libbpf_strerror_r(err, msg, sizeof(msg)));
-+ errstr(err));
- goto error;
- }
-
-@@ -13391,7 +13344,7 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
-
- err = parse_cpu_mask_file(online_cpus_file, &online, &n);
- if (err) {
-- pr_warn("failed to get online CPU mask: %d\n", err);
-+ pr_warn("failed to get online CPU mask: %s\n", errstr(err));
- goto error;
- }
-
-@@ -13422,7 +13375,7 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
- err = -errno;
- pr_warn("failed to set cpu #%d, key %d -> perf FD %d: %s\n",
- cpu, map_key, cpu_buf->fd,
-- libbpf_strerror_r(err, msg, sizeof(msg)));
-+ errstr(err));
- goto error;
- }
-
-@@ -13433,7 +13386,7 @@ static struct perf_buffer *__perf_buffer__new(int map_fd, size_t page_cnt,
- err = -errno;
- pr_warn("failed to epoll_ctl cpu #%d perf FD %d: %s\n",
- cpu, cpu_buf->fd,
-- libbpf_strerror_r(err, msg, sizeof(msg)));
-+ errstr(err));
- goto error;
- }
- j++;
-@@ -13528,7 +13481,7 @@ int perf_buffer__poll(struct perf_buffer *pb, int timeout_ms)
-
- err = perf_buffer__process_records(pb, cpu_buf);
- if (err) {
-- pr_warn("error while processing records: %d\n", err);
-+ pr_warn("error while processing records: %s\n", errstr(err));
- return libbpf_err(err);
- }
- }
-@@ -13612,7 +13565,8 @@ int perf_buffer__consume(struct perf_buffer *pb)
-
- err = perf_buffer__process_records(pb, cpu_buf);
- if (err) {
-- pr_warn("perf_buffer: failed to process records in buffer #%d: %d\n", i, err);
-+ pr_warn("perf_buffer: failed to process records in buffer #%d: %s\n",
-+ i, errstr(err));
- return libbpf_err(err);
- }
- }
-@@ -13723,14 +13677,14 @@ int parse_cpu_mask_file(const char *fcpu, bool **mask, int *mask_sz)
- fd = open(fcpu, O_RDONLY | O_CLOEXEC);
- if (fd < 0) {
- err = -errno;
-- pr_warn("Failed to open cpu mask file %s: %d\n", fcpu, err);
-+ pr_warn("Failed to open cpu mask file %s: %s\n", fcpu, errstr(err));
- return err;
- }
- len = read(fd, buf, sizeof(buf));
- close(fd);
- if (len <= 0) {
- err = len ? -errno : -EINVAL;
-- pr_warn("Failed to read cpu mask from %s: %d\n", fcpu, err);
-+ pr_warn("Failed to read cpu mask from %s: %s\n", fcpu, errstr(err));
- return err;
- }
- if (len >= sizeof(buf)) {
-@@ -13822,20 +13776,21 @@ int bpf_object__open_skeleton(struct bpf_object_skeleton *s,
- obj = bpf_object_open(NULL, s->data, s->data_sz, s->name, opts);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
-- pr_warn("failed to initialize skeleton BPF object '%s': %d\n", s->name, err);
-+ pr_warn("failed to initialize skeleton BPF object '%s': %s\n",
-+ s->name, errstr(err));
- return libbpf_err(err);
- }
-
- *s->obj = obj;
- err = populate_skeleton_maps(obj, s->maps, s->map_cnt, s->map_skel_sz);
- if (err) {
-- pr_warn("failed to populate skeleton maps for '%s': %d\n", s->name, err);
-+ pr_warn("failed to populate skeleton maps for '%s': %s\n", s->name, errstr(err));
- return libbpf_err(err);
- }
-
- err = populate_skeleton_progs(obj, s->progs, s->prog_cnt, s->prog_skel_sz);
- if (err) {
-- pr_warn("failed to populate skeleton progs for '%s': %d\n", s->name, err);
-+ pr_warn("failed to populate skeleton progs for '%s': %s\n", s->name, errstr(err));
- return libbpf_err(err);
- }
-
-@@ -13865,13 +13820,13 @@ int bpf_object__open_subskeleton(struct bpf_object_subskeleton *s)
-
- err = populate_skeleton_maps(s->obj, s->maps, s->map_cnt, s->map_skel_sz);
- if (err) {
-- pr_warn("failed to populate subskeleton maps: %d\n", err);
-+ pr_warn("failed to populate subskeleton maps: %s\n", errstr(err));
- return libbpf_err(err);
- }
-
- err = populate_skeleton_progs(s->obj, s->progs, s->prog_cnt, s->prog_skel_sz);
- if (err) {
-- pr_warn("failed to populate subskeleton maps: %d\n", err);
-+ pr_warn("failed to populate subskeleton maps: %s\n", errstr(err));
- return libbpf_err(err);
- }
-
-@@ -13918,7 +13873,7 @@ int bpf_object__load_skeleton(struct bpf_object_skeleton *s)
-
- err = bpf_object__load(*s->obj);
- if (err) {
-- pr_warn("failed to load BPF skeleton '%s': %d\n", s->name, err);
-+ pr_warn("failed to load BPF skeleton '%s': %s\n", s->name, errstr(err));
- return libbpf_err(err);
- }
-
-@@ -13957,8 +13912,8 @@ int bpf_object__attach_skeleton(struct bpf_object_skeleton *s)
-
- err = prog->sec_def->prog_attach_fn(prog, prog->sec_def->cookie, link);
- if (err) {
-- pr_warn("prog '%s': failed to auto-attach: %d\n",
-- bpf_program__name(prog), err);
-+ pr_warn("prog '%s': failed to auto-attach: %s\n",
-+ bpf_program__name(prog), errstr(err));
- return libbpf_err(err);
- }
-
-@@ -14007,7 +13962,8 @@ int bpf_object__attach_skeleton(struct bpf_object_skeleton *s)
- *link = bpf_map__attach_struct_ops(map);
- if (!*link) {
- err = -errno;
-- pr_warn("map '%s': failed to auto-attach: %d\n", bpf_map__name(map), err);
-+ pr_warn("map '%s': failed to auto-attach: %s\n",
-+ bpf_map__name(map), errstr(err));
- return libbpf_err(err);
- }
- }
---
-2.53.0
-
projects / thirdparty / kernel / stable-queue.git / commitdiff
