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-rw-r--r--tools/lib/bpf/bpf.c17
-rw-r--r--tools/lib/bpf/bpf.h18
-rw-r--r--tools/lib/bpf/bpf_helpers.h15
-rw-r--r--tools/lib/bpf/bpf_tracing.h3
-rw-r--r--tools/lib/bpf/btf.c2
-rw-r--r--tools/lib/bpf/btf_dump.c22
-rw-r--r--tools/lib/bpf/gen_loader.c14
-rw-r--r--tools/lib/bpf/libbpf.c154
-rw-r--r--tools/lib/bpf/libbpf.h18
-rw-r--r--tools/lib/bpf/libbpf.map5
-rw-r--r--tools/lib/bpf/libbpf_probes.c2
-rw-r--r--tools/lib/bpf/libbpf_version.h2
-rw-r--r--tools/lib/bpf/usdt.c5
13 files changed, 229 insertions, 48 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 128ac723c4ea..ed86b37d8024 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -572,20 +572,30 @@ int bpf_map_update_batch(int fd, const void *keys, const void *values, __u32 *co
(void *)keys, (void *)values, count, opts);
}
-int bpf_obj_pin(int fd, const char *pathname)
+int bpf_obj_pin_opts(int fd, const char *pathname, const struct bpf_obj_pin_opts *opts)
{
- const size_t attr_sz = offsetofend(union bpf_attr, file_flags);
+ const size_t attr_sz = offsetofend(union bpf_attr, path_fd);
union bpf_attr attr;
int ret;
+ if (!OPTS_VALID(opts, bpf_obj_pin_opts))
+ return libbpf_err(-EINVAL);
+
memset(&attr, 0, attr_sz);
+ attr.path_fd = OPTS_GET(opts, path_fd, 0);
attr.pathname = ptr_to_u64((void *)pathname);
+ attr.file_flags = OPTS_GET(opts, file_flags, 0);
attr.bpf_fd = fd;
ret = sys_bpf(BPF_OBJ_PIN, &attr, attr_sz);
return libbpf_err_errno(ret);
}
+int bpf_obj_pin(int fd, const char *pathname)
+{
+ return bpf_obj_pin_opts(fd, pathname, NULL);
+}
+
int bpf_obj_get(const char *pathname)
{
return bpf_obj_get_opts(pathname, NULL);
@@ -593,7 +603,7 @@ int bpf_obj_get(const char *pathname)
int bpf_obj_get_opts(const char *pathname, const struct bpf_obj_get_opts *opts)
{
- const size_t attr_sz = offsetofend(union bpf_attr, file_flags);
+ const size_t attr_sz = offsetofend(union bpf_attr, path_fd);
union bpf_attr attr;
int fd;
@@ -601,6 +611,7 @@ int bpf_obj_get_opts(const char *pathname, const struct bpf_obj_get_opts *opts)
return libbpf_err(-EINVAL);
memset(&attr, 0, attr_sz);
+ attr.path_fd = OPTS_GET(opts, path_fd, 0);
attr.pathname = ptr_to_u64((void *)pathname);
attr.file_flags = OPTS_GET(opts, file_flags, 0);
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index a2c091389b18..9aa0ee473754 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -284,16 +284,30 @@ LIBBPF_API int bpf_map_update_batch(int fd, const void *keys, const void *values
__u32 *count,
const struct bpf_map_batch_opts *opts);
-struct bpf_obj_get_opts {
+struct bpf_obj_pin_opts {
size_t sz; /* size of this struct for forward/backward compatibility */
__u32 file_flags;
+ int path_fd;
size_t :0;
};
-#define bpf_obj_get_opts__last_field file_flags
+#define bpf_obj_pin_opts__last_field path_fd
LIBBPF_API int bpf_obj_pin(int fd, const char *pathname);
+LIBBPF_API int bpf_obj_pin_opts(int fd, const char *pathname,
+ const struct bpf_obj_pin_opts *opts);
+
+struct bpf_obj_get_opts {
+ size_t sz; /* size of this struct for forward/backward compatibility */
+
+ __u32 file_flags;
+ int path_fd;
+
+ size_t :0;
+};
+#define bpf_obj_get_opts__last_field path_fd
+
LIBBPF_API int bpf_obj_get(const char *pathname);
LIBBPF_API int bpf_obj_get_opts(const char *pathname,
const struct bpf_obj_get_opts *opts);
diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h
index 929a3baca8ef..bbab9ad9dc5a 100644
--- a/tools/lib/bpf/bpf_helpers.h
+++ b/tools/lib/bpf/bpf_helpers.h
@@ -77,16 +77,21 @@
/*
* Helper macros to manipulate data structures
*/
-#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((unsigned long)&((TYPE *)0)->MEMBER)
-#endif
-#ifndef container_of
+
+/* offsetof() definition that uses __builtin_offset() might not preserve field
+ * offset CO-RE relocation properly, so force-redefine offsetof() using
+ * old-school approach which works with CO-RE correctly
+ */
+#undef offsetof
+#define offsetof(type, member) ((unsigned long)&((type *)0)->member)
+
+/* redefined container_of() to ensure we use the above offsetof() macro */
+#undef container_of
#define container_of(ptr, type, member) \
({ \
void *__mptr = (void *)(ptr); \
((type *)(__mptr - offsetof(type, member))); \
})
-#endif
/*
* Compiler (optimization) barrier.
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index 6fb3d0f9af17..be076a4041ab 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -351,6 +351,7 @@ struct pt_regs___arm64 {
* https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-cc.adoc#risc-v-calling-conventions
*/
+/* riscv provides struct user_regs_struct instead of struct pt_regs to userspace */
#define __PT_REGS_CAST(x) ((const struct user_regs_struct *)(x))
#define __PT_PARM1_REG a0
#define __PT_PARM2_REG a1
@@ -383,7 +384,7 @@ struct pt_regs___arm64 {
* https://raw.githubusercontent.com/wiki/foss-for-synopsys-dwc-arc-processors/toolchain/files/ARCv2_ABI.pdf
*/
-/* arc provides struct user_pt_regs instead of struct pt_regs to userspace */
+/* arc provides struct user_regs_struct instead of struct pt_regs to userspace */
#define __PT_REGS_CAST(x) ((const struct user_regs_struct *)(x))
#define __PT_PARM1_REG scratch.r0
#define __PT_PARM2_REG scratch.r1
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 0a2c079244b6..8484b563b53d 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -1064,7 +1064,7 @@ static struct btf *btf_parse_raw(const char *path, struct btf *base_btf)
int err = 0;
long sz;
- f = fopen(path, "rb");
+ f = fopen(path, "rbe");
if (!f) {
err = -errno;
goto err_out;
diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index 580985ee5545..4d9f30bf7f01 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -2250,9 +2250,25 @@ static int btf_dump_type_data_check_overflow(struct btf_dump *d,
const struct btf_type *t,
__u32 id,
const void *data,
- __u8 bits_offset)
+ __u8 bits_offset,
+ __u8 bit_sz)
{
- __s64 size = btf__resolve_size(d->btf, id);
+ __s64 size;
+
+ if (bit_sz) {
+ /* bits_offset is at most 7. bit_sz is at most 128. */
+ __u8 nr_bytes = (bits_offset + bit_sz + 7) / 8;
+
+ /* When bit_sz is non zero, it is called from
+ * btf_dump_struct_data() where it only cares about
+ * negative error value.
+ * Return nr_bytes in success case to make it
+ * consistent as the regular integer case below.
+ */
+ return data + nr_bytes > d->typed_dump->data_end ? -E2BIG : nr_bytes;
+ }
+
+ size = btf__resolve_size(d->btf, id);
if (size < 0 || size >= INT_MAX) {
pr_warn("unexpected size [%zu] for id [%u]\n",
@@ -2407,7 +2423,7 @@ static int btf_dump_dump_type_data(struct btf_dump *d,
{
int size, err = 0;
- size = btf_dump_type_data_check_overflow(d, t, id, data, bits_offset);
+ size = btf_dump_type_data_check_overflow(d, t, id, data, bits_offset, bit_sz);
if (size < 0)
return size;
err = btf_dump_type_data_check_zero(d, t, id, data, bits_offset, bit_sz);
diff --git a/tools/lib/bpf/gen_loader.c b/tools/lib/bpf/gen_loader.c
index 83e8e3bfd8ff..cf3323fd47b8 100644
--- a/tools/lib/bpf/gen_loader.c
+++ b/tools/lib/bpf/gen_loader.c
@@ -703,17 +703,17 @@ static void emit_relo_kfunc_btf(struct bpf_gen *gen, struct ksym_relo_desc *relo
/* obtain fd in BPF_REG_9 */
emit(gen, BPF_MOV64_REG(BPF_REG_9, BPF_REG_7));
emit(gen, BPF_ALU64_IMM(BPF_RSH, BPF_REG_9, 32));
- /* jump to fd_array store if fd denotes module BTF */
- emit(gen, BPF_JMP_IMM(BPF_JNE, BPF_REG_9, 0, 2));
- /* set the default value for off */
- emit(gen, BPF_ST_MEM(BPF_H, BPF_REG_8, offsetof(struct bpf_insn, off), 0));
- /* skip BTF fd store for vmlinux BTF */
- emit(gen, BPF_JMP_IMM(BPF_JA, 0, 0, 4));
/* load fd_array slot pointer */
emit2(gen, BPF_LD_IMM64_RAW_FULL(BPF_REG_0, BPF_PSEUDO_MAP_IDX_VALUE,
0, 0, 0, blob_fd_array_off(gen, btf_fd_idx)));
- /* store BTF fd in slot */
+ /* store BTF fd in slot, 0 for vmlinux */
emit(gen, BPF_STX_MEM(BPF_W, BPF_REG_0, BPF_REG_9, 0));
+ /* jump to insn[insn_idx].off store if fd denotes module BTF */
+ emit(gen, BPF_JMP_IMM(BPF_JNE, BPF_REG_9, 0, 2));
+ /* set the default value for off */
+ emit(gen, BPF_ST_MEM(BPF_H, BPF_REG_8, offsetof(struct bpf_insn, off), 0));
+ /* skip BTF fd store for vmlinux BTF */
+ emit(gen, BPF_JMP_IMM(BPF_JA, 0, 0, 1));
/* store index into insn[insn_idx].off */
emit(gen, BPF_ST_MEM(BPF_H, BPF_REG_8, offsetof(struct bpf_insn, off), btf_fd_idx));
log:
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index a27f6e9ccce7..214f828ece6b 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1501,16 +1501,36 @@ static struct bpf_map *bpf_object__add_map(struct bpf_object *obj)
return map;
}
-static size_t bpf_map_mmap_sz(const struct bpf_map *map)
+static size_t bpf_map_mmap_sz(unsigned int value_sz, unsigned int max_entries)
{
- long page_sz = sysconf(_SC_PAGE_SIZE);
+ const long page_sz = sysconf(_SC_PAGE_SIZE);
size_t map_sz;
- map_sz = (size_t)roundup(map->def.value_size, 8) * map->def.max_entries;
+ map_sz = (size_t)roundup(value_sz, 8) * max_entries;
map_sz = roundup(map_sz, page_sz);
return map_sz;
}
+static int bpf_map_mmap_resize(struct bpf_map *map, size_t old_sz, size_t new_sz)
+{
+ void *mmaped;
+
+ if (!map->mmaped)
+ return -EINVAL;
+
+ if (old_sz == new_sz)
+ return 0;
+
+ mmaped = mmap(NULL, new_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
+ if (mmaped == MAP_FAILED)
+ return -errno;
+
+ memcpy(mmaped, map->mmaped, min(old_sz, new_sz));
+ munmap(map->mmaped, old_sz);
+ map->mmaped = mmaped;
+ return 0;
+}
+
static char *internal_map_name(struct bpf_object *obj, const char *real_name)
{
char map_name[BPF_OBJ_NAME_LEN], *p;
@@ -1609,6 +1629,7 @@ bpf_object__init_internal_map(struct bpf_object *obj, enum libbpf_map_type type,
{
struct bpf_map_def *def;
struct bpf_map *map;
+ size_t mmap_sz;
int err;
map = bpf_object__add_map(obj);
@@ -1643,7 +1664,8 @@ bpf_object__init_internal_map(struct bpf_object *obj, enum libbpf_map_type type,
pr_debug("map '%s' (global data): at sec_idx %d, offset %zu, flags %x.\n",
map->name, map->sec_idx, map->sec_offset, def->map_flags);
- map->mmaped = mmap(NULL, bpf_map_mmap_sz(map), PROT_READ | PROT_WRITE,
+ mmap_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries);
+ map->mmaped = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
if (map->mmaped == MAP_FAILED) {
err = -errno;
@@ -4330,7 +4352,7 @@ static int bpf_get_map_info_from_fdinfo(int fd, struct bpf_map_info *info)
snprintf(file, sizeof(file), "/proc/%d/fdinfo/%d", getpid(), fd);
memset(info, 0, sizeof(*info));
- fp = fopen(file, "r");
+ fp = fopen(file, "re");
if (!fp) {
err = -errno;
pr_warn("failed to open %s: %d. No procfs support?\n", file,
@@ -4393,18 +4415,17 @@ int bpf_map__reuse_fd(struct bpf_map *map, int fd)
if (!new_name)
return libbpf_err(-errno);
- new_fd = open("/", O_RDONLY | O_CLOEXEC);
+ /*
+ * Like dup(), but make sure new FD is >= 3 and has O_CLOEXEC set.
+ * This is similar to what we do in ensure_good_fd(), but without
+ * closing original FD.
+ */
+ new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
if (new_fd < 0) {
err = -errno;
goto err_free_new_name;
}
- new_fd = dup3(fd, new_fd, O_CLOEXEC);
- if (new_fd < 0) {
- err = -errno;
- goto err_close_new_fd;
- }
-
err = zclose(map->fd);
if (err) {
err = -errno;
@@ -7434,7 +7455,7 @@ int libbpf_kallsyms_parse(kallsyms_cb_t cb, void *ctx)
int ret, err = 0;
FILE *f;
- f = fopen("/proc/kallsyms", "r");
+ f = fopen("/proc/kallsyms", "re");
if (!f) {
err = -errno;
pr_warn("failed to open /proc/kallsyms: %d\n", err);
@@ -8295,7 +8316,10 @@ static void bpf_map__destroy(struct bpf_map *map)
map->init_slots_sz = 0;
if (map->mmaped) {
- munmap(map->mmaped, bpf_map_mmap_sz(map));
+ size_t mmap_sz;
+
+ mmap_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries);
+ munmap(map->mmaped, mmap_sz);
map->mmaped = NULL;
}
@@ -9413,10 +9437,103 @@ __u32 bpf_map__value_size(const struct bpf_map *map)
return map->def.value_size;
}
+static int map_btf_datasec_resize(struct bpf_map *map, __u32 size)
+{
+ struct btf *btf;
+ struct btf_type *datasec_type, *var_type;
+ struct btf_var_secinfo *var;
+ const struct btf_type *array_type;
+ const struct btf_array *array;
+ int vlen, element_sz, new_array_id;
+ __u32 nr_elements;
+
+ /* check btf existence */
+ btf = bpf_object__btf(map->obj);
+ if (!btf)
+ return -ENOENT;
+
+ /* verify map is datasec */
+ datasec_type = btf_type_by_id(btf, bpf_map__btf_value_type_id(map));
+ if (!btf_is_datasec(datasec_type)) {
+ pr_warn("map '%s': cannot be resized, map value type is not a datasec\n",
+ bpf_map__name(map));
+ return -EINVAL;
+ }
+
+ /* verify datasec has at least one var */
+ vlen = btf_vlen(datasec_type);
+ if (vlen == 0) {
+ pr_warn("map '%s': cannot be resized, map value datasec is empty\n",
+ bpf_map__name(map));
+ return -EINVAL;
+ }
+
+ /* verify last var in the datasec is an array */
+ var = &btf_var_secinfos(datasec_type)[vlen - 1];
+ var_type = btf_type_by_id(btf, var->type);
+ array_type = skip_mods_and_typedefs(btf, var_type->type, NULL);
+ if (!btf_is_array(array_type)) {
+ pr_warn("map '%s': cannot be resized, last var must be an array\n",
+ bpf_map__name(map));
+ return -EINVAL;
+ }
+
+ /* verify request size aligns with array */
+ array = btf_array(array_type);
+ element_sz = btf__resolve_size(btf, array->type);
+ if (element_sz <= 0 || (size - var->offset) % element_sz != 0) {
+ pr_warn("map '%s': cannot be resized, element size (%d) doesn't align with new total size (%u)\n",
+ bpf_map__name(map), element_sz, size);
+ return -EINVAL;
+ }
+
+ /* create a new array based on the existing array, but with new length */
+ nr_elements = (size - var->offset) / element_sz;
+ new_array_id = btf__add_array(btf, array->index_type, array->type, nr_elements);
+ if (new_array_id < 0)
+ return new_array_id;
+
+ /* adding a new btf type invalidates existing pointers to btf objects,
+ * so refresh pointers before proceeding
+ */
+ datasec_type = btf_type_by_id(btf, map->btf_value_type_id);
+ var = &btf_var_secinfos(datasec_type)[vlen - 1];
+ var_type = btf_type_by_id(btf, var->type);
+
+ /* finally update btf info */
+ datasec_type->size = size;
+ var->size = size - var->offset;
+ var_type->type = new_array_id;
+
+ return 0;
+}
+
int bpf_map__set_value_size(struct bpf_map *map, __u32 size)
{
if (map->fd >= 0)
return libbpf_err(-EBUSY);
+
+ if (map->mmaped) {
+ int err;
+ size_t mmap_old_sz, mmap_new_sz;
+
+ mmap_old_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries);
+ mmap_new_sz = bpf_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);
+ 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);
+ map->btf_value_type_id = 0;
+ map->btf_key_type_id = 0;
+ }
+ }
+
map->def.value_size = size;
return 0;
}
@@ -9442,7 +9559,7 @@ int bpf_map__set_initial_value(struct bpf_map *map,
return 0;
}
-const void *bpf_map__initial_value(struct bpf_map *map, size_t *psize)
+void *bpf_map__initial_value(struct bpf_map *map, size_t *psize)
{
if (!map->mmaped)
return NULL;
@@ -9958,7 +10075,7 @@ static int parse_uint_from_file(const char *file, const char *fmt)
int err, ret;
FILE *f;
- f = fopen(file, "r");
+ f = fopen(file, "re");
if (!f) {
err = -errno;
pr_debug("failed to open '%s': %s\n", file,
@@ -12694,7 +12811,7 @@ int bpf_object__load_skeleton(struct bpf_object_skeleton *s)
for (i = 0; i < s->map_cnt; i++) {
struct bpf_map *map = *s->maps[i].map;
- size_t mmap_sz = bpf_map_mmap_sz(map);
+ size_t mmap_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries);
int prot, map_fd = bpf_map__fd(map);
void **mmaped = s->maps[i].mmaped;
@@ -12721,8 +12838,7 @@ int bpf_object__load_skeleton(struct bpf_object_skeleton *s)
* as per normal clean up procedure, so we don't need to worry
* about it from skeleton's clean up perspective.
*/
- *mmaped = mmap(map->mmaped, mmap_sz, prot,
- MAP_SHARED | MAP_FIXED, map_fd, 0);
+ *mmaped = mmap(map->mmaped, mmap_sz, prot, MAP_SHARED | MAP_FIXED, map_fd, 0);
if (*mmaped == MAP_FAILED) {
err = -errno;
*mmaped = NULL;
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 0b7362397ea3..754da73c643b 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -869,8 +869,22 @@ LIBBPF_API int bpf_map__set_numa_node(struct bpf_map *map, __u32 numa_node);
/* get/set map key size */
LIBBPF_API __u32 bpf_map__key_size(const struct bpf_map *map);
LIBBPF_API int bpf_map__set_key_size(struct bpf_map *map, __u32 size);
-/* get/set map value size */
+/* get map value size */
LIBBPF_API __u32 bpf_map__value_size(const struct bpf_map *map);
+/**
+ * @brief **bpf_map__set_value_size()** sets map value size.
+ * @param map the BPF map instance
+ * @return 0, on success; negative error, otherwise
+ *
+ * There is a special case for maps with associated memory-mapped regions, like
+ * the global data section maps (bss, data, rodata). When this function is used
+ * on such a map, the mapped region is resized. Afterward, an attempt is made to
+ * adjust the corresponding BTF info. This attempt is best-effort and can only
+ * succeed if the last variable of the data section map is an array. The array
+ * BTF type is replaced by a new BTF array type with a different length.
+ * Any previously existing pointers returned from bpf_map__initial_value() or
+ * corresponding data section skeleton pointer must be reinitialized.
+ */
LIBBPF_API int bpf_map__set_value_size(struct bpf_map *map, __u32 size);
/* get map key/value BTF type IDs */
LIBBPF_API __u32 bpf_map__btf_key_type_id(const struct bpf_map *map);
@@ -884,7 +898,7 @@ LIBBPF_API int bpf_map__set_map_extra(struct bpf_map *map, __u64 map_extra);
LIBBPF_API int bpf_map__set_initial_value(struct bpf_map *map,
const void *data, size_t size);
-LIBBPF_API const void *bpf_map__initial_value(struct bpf_map *map, size_t *psize);
+LIBBPF_API void *bpf_map__initial_value(struct bpf_map *map, size_t *psize);
/**
* @brief **bpf_map__is_internal()** tells the caller whether or not the
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index a5aa3a383d69..7521a2fb7626 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -391,3 +391,8 @@ LIBBPF_1.2.0 {
bpf_map_get_info_by_fd;
bpf_prog_get_info_by_fd;
} LIBBPF_1.1.0;
+
+LIBBPF_1.3.0 {
+ global:
+ bpf_obj_pin_opts;
+} LIBBPF_1.2.0;
diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index b7d443129f1c..9c4db90b92b6 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -38,7 +38,7 @@ static __u32 get_ubuntu_kernel_version(void)
if (faccessat(AT_FDCWD, ubuntu_kver_file, R_OK, AT_EACCESS) != 0)
return 0;
- f = fopen(ubuntu_kver_file, "r");
+ f = fopen(ubuntu_kver_file, "re");
if (!f)
return 0;
diff --git a/tools/lib/bpf/libbpf_version.h b/tools/lib/bpf/libbpf_version.h
index 1fd2eeac5cfc..290411ddb39e 100644
--- a/tools/lib/bpf/libbpf_version.h
+++ b/tools/lib/bpf/libbpf_version.h
@@ -4,6 +4,6 @@
#define __LIBBPF_VERSION_H
#define LIBBPF_MAJOR_VERSION 1
-#define LIBBPF_MINOR_VERSION 2
+#define LIBBPF_MINOR_VERSION 3
#endif /* __LIBBPF_VERSION_H */
diff --git a/tools/lib/bpf/usdt.c b/tools/lib/bpf/usdt.c
index 086eef355ab3..f1a141555f08 100644
--- a/tools/lib/bpf/usdt.c
+++ b/tools/lib/bpf/usdt.c
@@ -466,7 +466,7 @@ static int parse_vma_segs(int pid, const char *lib_path, struct elf_seg **segs,
proceed:
sprintf(line, "/proc/%d/maps", pid);
- f = fopen(line, "r");
+ f = fopen(line, "re");
if (!f) {
err = -errno;
pr_warn("usdt: failed to open '%s' to get base addr of '%s': %d\n",
@@ -954,8 +954,7 @@ struct bpf_link *usdt_manager_attach_usdt(struct usdt_manager *man, const struct
spec_map_fd = bpf_map__fd(man->specs_map);
ip_map_fd = bpf_map__fd(man->ip_to_spec_id_map);
- /* TODO: perform path resolution similar to uprobe's */
- fd = open(path, O_RDONLY);
+ fd = open(path, O_RDONLY | O_CLOEXEC);
if (fd < 0) {
err = -errno;
pr_warn("usdt: failed to open ELF binary '%s': %d\n", path, err);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 17:06:37 +0000