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Diffstat (limited to 'tools/lib/bpf/btf.c')
-rw-r--r--tools/lib/bpf/btf.c302
1 files changed, 152 insertions, 150 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index d57e13a13798..b46760b93bb4 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -443,7 +443,7 @@ struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id)
const struct btf_type *btf__type_by_id(const struct btf *btf, __u32 type_id)
{
if (type_id >= btf->start_id + btf->nr_types)
- return NULL;
+ return errno = EINVAL, NULL;
return btf_type_by_id((struct btf *)btf, type_id);
}
@@ -510,7 +510,7 @@ size_t btf__pointer_size(const struct btf *btf)
int btf__set_pointer_size(struct btf *btf, size_t ptr_sz)
{
if (ptr_sz != 4 && ptr_sz != 8)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
btf->ptr_sz = ptr_sz;
return 0;
}
@@ -537,7 +537,7 @@ enum btf_endianness btf__endianness(const struct btf *btf)
int btf__set_endianness(struct btf *btf, enum btf_endianness endian)
{
if (endian != BTF_LITTLE_ENDIAN && endian != BTF_BIG_ENDIAN)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
btf->swapped_endian = is_host_big_endian() != (endian == BTF_BIG_ENDIAN);
if (!btf->swapped_endian) {
@@ -568,8 +568,7 @@ __s64 btf__resolve_size(const struct btf *btf, __u32 type_id)
int i;
t = btf__type_by_id(btf, type_id);
- for (i = 0; i < MAX_RESOLVE_DEPTH && !btf_type_is_void_or_null(t);
- i++) {
+ for (i = 0; i < MAX_RESOLVE_DEPTH && !btf_type_is_void_or_null(t); i++) {
switch (btf_kind(t)) {
case BTF_KIND_INT:
case BTF_KIND_STRUCT:
@@ -592,12 +591,12 @@ __s64 btf__resolve_size(const struct btf *btf, __u32 type_id)
case BTF_KIND_ARRAY:
array = btf_array(t);
if (nelems && array->nelems > UINT32_MAX / nelems)
- return -E2BIG;
+ return libbpf_err(-E2BIG);
nelems *= array->nelems;
type_id = array->type;
break;
default:
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
t = btf__type_by_id(btf, type_id);
@@ -605,9 +604,9 @@ __s64 btf__resolve_size(const struct btf *btf, __u32 type_id)
done:
if (size < 0)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (nelems && size > UINT32_MAX / nelems)
- return -E2BIG;
+ return libbpf_err(-E2BIG);
return nelems * size;
}
@@ -640,7 +639,7 @@ int btf__align_of(const struct btf *btf, __u32 id)
for (i = 0; i < vlen; i++, m++) {
align = btf__align_of(btf, m->type);
if (align <= 0)
- return align;
+ return libbpf_err(align);
max_align = max(max_align, align);
}
@@ -648,7 +647,7 @@ int btf__align_of(const struct btf *btf, __u32 id)
}
default:
pr_warn("unsupported BTF_KIND:%u\n", btf_kind(t));
- return 0;
+ return errno = EINVAL, 0;
}
}
@@ -667,7 +666,7 @@ int btf__resolve_type(const struct btf *btf, __u32 type_id)
}
if (depth == MAX_RESOLVE_DEPTH || btf_type_is_void_or_null(t))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
return type_id;
}
@@ -687,7 +686,7 @@ __s32 btf__find_by_name(const struct btf *btf, const char *type_name)
return i;
}
- return -ENOENT;
+ return libbpf_err(-ENOENT);
}
__s32 btf__find_by_name_kind(const struct btf *btf, const char *type_name,
@@ -709,7 +708,7 @@ __s32 btf__find_by_name_kind(const struct btf *btf, const char *type_name,
return i;
}
- return -ENOENT;
+ return libbpf_err(-ENOENT);
}
static bool btf_is_modifiable(const struct btf *btf)
@@ -785,12 +784,12 @@ static struct btf *btf_new_empty(struct btf *base_btf)
struct btf *btf__new_empty(void)
{
- return btf_new_empty(NULL);
+ return libbpf_ptr(btf_new_empty(NULL));
}
struct btf *btf__new_empty_split(struct btf *base_btf)
{
- return btf_new_empty(base_btf);
+ return libbpf_ptr(btf_new_empty(base_btf));
}
static struct btf *btf_new(const void *data, __u32 size, struct btf *base_btf)
@@ -846,7 +845,7 @@ done:
struct btf *btf__new(const void *data, __u32 size)
{
- return btf_new(data, size, NULL);
+ return libbpf_ptr(btf_new(data, size, NULL));
}
static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
@@ -937,7 +936,8 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
goto done;
}
btf = btf_new(btf_data->d_buf, btf_data->d_size, base_btf);
- if (IS_ERR(btf))
+ err = libbpf_get_error(btf);
+ if (err)
goto done;
switch (gelf_getclass(elf)) {
@@ -953,9 +953,9 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
}
if (btf_ext && btf_ext_data) {
- *btf_ext = btf_ext__new(btf_ext_data->d_buf,
- btf_ext_data->d_size);
- if (IS_ERR(*btf_ext))
+ *btf_ext = btf_ext__new(btf_ext_data->d_buf, btf_ext_data->d_size);
+ err = libbpf_get_error(*btf_ext);
+ if (err)
goto done;
} else if (btf_ext) {
*btf_ext = NULL;
@@ -965,30 +965,24 @@ done:
elf_end(elf);
close(fd);
- if (err)
- return ERR_PTR(err);
- /*
- * btf is always parsed before btf_ext, so no need to clean up
- * btf_ext, if btf loading failed
- */
- if (IS_ERR(btf))
+ if (!err)
return btf;
- if (btf_ext && IS_ERR(*btf_ext)) {
- btf__free(btf);
- err = PTR_ERR(*btf_ext);
- return ERR_PTR(err);
- }
- return btf;
+
+ if (btf_ext)
+ btf_ext__free(*btf_ext);
+ btf__free(btf);
+
+ return ERR_PTR(err);
}
struct btf *btf__parse_elf(const char *path, struct btf_ext **btf_ext)
{
- return btf_parse_elf(path, NULL, btf_ext);
+ return libbpf_ptr(btf_parse_elf(path, NULL, btf_ext));
}
struct btf *btf__parse_elf_split(const char *path, struct btf *base_btf)
{
- return btf_parse_elf(path, base_btf, NULL);
+ return libbpf_ptr(btf_parse_elf(path, base_btf, NULL));
}
static struct btf *btf_parse_raw(const char *path, struct btf *base_btf)
@@ -1056,36 +1050,39 @@ err_out:
struct btf *btf__parse_raw(const char *path)
{
- return btf_parse_raw(path, NULL);
+ return libbpf_ptr(btf_parse_raw(path, NULL));
}
struct btf *btf__parse_raw_split(const char *path, struct btf *base_btf)
{
- return btf_parse_raw(path, base_btf);
+ return libbpf_ptr(btf_parse_raw(path, base_btf));
}
static struct btf *btf_parse(const char *path, struct btf *base_btf, struct btf_ext **btf_ext)
{
struct btf *btf;
+ int err;
if (btf_ext)
*btf_ext = NULL;
btf = btf_parse_raw(path, base_btf);
- if (!IS_ERR(btf) || PTR_ERR(btf) != -EPROTO)
+ err = libbpf_get_error(btf);
+ if (!err)
return btf;
-
+ if (err != -EPROTO)
+ return ERR_PTR(err);
return btf_parse_elf(path, base_btf, btf_ext);
}
struct btf *btf__parse(const char *path, struct btf_ext **btf_ext)
{
- return btf_parse(path, NULL, btf_ext);
+ return libbpf_ptr(btf_parse(path, NULL, btf_ext));
}
struct btf *btf__parse_split(const char *path, struct btf *base_btf)
{
- return btf_parse(path, base_btf, NULL);
+ return libbpf_ptr(btf_parse(path, base_btf, NULL));
}
static int compare_vsi_off(const void *_a, const void *_b)
@@ -1178,7 +1175,7 @@ int btf__finalize_data(struct bpf_object *obj, struct btf *btf)
}
}
- return err;
+ return libbpf_err(err);
}
static void *btf_get_raw_data(const struct btf *btf, __u32 *size, bool swap_endian);
@@ -1191,13 +1188,13 @@ int btf__load(struct btf *btf)
int err = 0;
if (btf->fd >= 0)
- return -EEXIST;
+ return libbpf_err(-EEXIST);
retry_load:
if (log_buf_size) {
log_buf = malloc(log_buf_size);
if (!log_buf)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
*log_buf = 0;
}
@@ -1229,7 +1226,7 @@ retry_load:
done:
free(log_buf);
- return err;
+ return libbpf_err(err);
}
int btf__fd(const struct btf *btf)
@@ -1305,7 +1302,7 @@ const void *btf__get_raw_data(const struct btf *btf_ro, __u32 *size)
data = btf_get_raw_data(btf, &data_sz, btf->swapped_endian);
if (!data)
- return NULL;
+ return errno = -ENOMEM, NULL;
btf->raw_size = data_sz;
if (btf->swapped_endian)
@@ -1323,7 +1320,7 @@ const char *btf__str_by_offset(const struct btf *btf, __u32 offset)
else if (offset - btf->start_str_off < btf->hdr->str_len)
return btf_strs_data(btf) + (offset - btf->start_str_off);
else
- return NULL;
+ return errno = EINVAL, NULL;
}
const char *btf__name_by_offset(const struct btf *btf, __u32 offset)
@@ -1388,17 +1385,20 @@ exit_free:
int btf__get_from_id(__u32 id, struct btf **btf)
{
struct btf *res;
- int btf_fd;
+ int err, btf_fd;
*btf = NULL;
btf_fd = bpf_btf_get_fd_by_id(id);
if (btf_fd < 0)
- return -errno;
+ return libbpf_err(-errno);
res = btf_get_from_fd(btf_fd, NULL);
+ err = libbpf_get_error(res);
+
close(btf_fd);
- if (IS_ERR(res))
- return PTR_ERR(res);
+
+ if (err)
+ return libbpf_err(err);
*btf = res;
return 0;
@@ -1415,31 +1415,30 @@ int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
__s64 key_size, value_size;
__s32 container_id;
- if (snprintf(container_name, max_name, "____btf_map_%s", map_name) ==
- max_name) {
+ if (snprintf(container_name, max_name, "____btf_map_%s", map_name) == max_name) {
pr_warn("map:%s length of '____btf_map_%s' is too long\n",
map_name, map_name);
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
container_id = btf__find_by_name(btf, container_name);
if (container_id < 0) {
pr_debug("map:%s container_name:%s cannot be found in BTF. Missing BPF_ANNOTATE_KV_PAIR?\n",
map_name, container_name);
- return container_id;
+ return libbpf_err(container_id);
}
container_type = btf__type_by_id(btf, container_id);
if (!container_type) {
pr_warn("map:%s cannot find BTF type for container_id:%u\n",
map_name, container_id);
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
if (!btf_is_struct(container_type) || btf_vlen(container_type) < 2) {
pr_warn("map:%s container_name:%s is an invalid container struct\n",
map_name, container_name);
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
key = btf_members(container_type);
@@ -1448,25 +1447,25 @@ int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
key_size = btf__resolve_size(btf, key->type);
if (key_size < 0) {
pr_warn("map:%s invalid BTF key_type_size\n", map_name);
- return key_size;
+ return libbpf_err(key_size);
}
if (expected_key_size != key_size) {
pr_warn("map:%s btf_key_type_size:%u != map_def_key_size:%u\n",
map_name, (__u32)key_size, expected_key_size);
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
value_size = btf__resolve_size(btf, value->type);
if (value_size < 0) {
pr_warn("map:%s invalid BTF value_type_size\n", map_name);
- return value_size;
+ return libbpf_err(value_size);
}
if (expected_value_size != value_size) {
pr_warn("map:%s btf_value_type_size:%u != map_def_value_size:%u\n",
map_name, (__u32)value_size, expected_value_size);
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
*key_type_id = key->type;
@@ -1563,11 +1562,11 @@ int btf__find_str(struct btf *btf, const char *s)
/* BTF needs to be in a modifiable state to build string lookup index */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
off = strset__find_str(btf->strs_set, s);
if (off < 0)
- return off;
+ return libbpf_err(off);
return btf->start_str_off + off;
}
@@ -1588,11 +1587,11 @@ int btf__add_str(struct btf *btf, const char *s)
}
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
off = strset__add_str(btf->strs_set, s);
if (off < 0)
- return off;
+ return libbpf_err(off);
btf->hdr->str_len = strset__data_size(btf->strs_set);
@@ -1616,7 +1615,7 @@ static int btf_commit_type(struct btf *btf, int data_sz)
err = btf_add_type_idx_entry(btf, btf->hdr->type_len);
if (err)
- return err;
+ return libbpf_err(err);
btf->hdr->type_len += data_sz;
btf->hdr->str_off += data_sz;
@@ -1653,21 +1652,21 @@ int btf__add_type(struct btf *btf, const struct btf *src_btf, const struct btf_t
sz = btf_type_size(src_type);
if (sz < 0)
- return sz;
+ return libbpf_err(sz);
/* deconstruct BTF, if necessary, and invalidate raw_data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
memcpy(t, src_type, sz);
err = btf_type_visit_str_offs(t, btf_rewrite_str, &p);
if (err)
- return err;
+ return libbpf_err(err);
return btf_commit_type(btf, sz);
}
@@ -1688,21 +1687,21 @@ int btf__add_int(struct btf *btf, const char *name, size_t byte_sz, int encoding
/* non-empty name */
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* byte_sz must be power of 2 */
if (!byte_sz || (byte_sz & (byte_sz - 1)) || byte_sz > 16)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (encoding & ~(BTF_INT_SIGNED | BTF_INT_CHAR | BTF_INT_BOOL))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* deconstruct BTF, if necessary, and invalidate raw_data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type) + sizeof(int);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
/* if something goes wrong later, we might end up with an extra string,
* but that shouldn't be a problem, because BTF can't be constructed
@@ -1736,20 +1735,20 @@ int btf__add_float(struct btf *btf, const char *name, size_t byte_sz)
/* non-empty name */
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* byte_sz must be one of the explicitly allowed values */
if (byte_sz != 2 && byte_sz != 4 && byte_sz != 8 && byte_sz != 12 &&
byte_sz != 16)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
name_off = btf__add_str(btf, name);
if (name_off < 0)
@@ -1780,15 +1779,15 @@ static int btf_add_ref_kind(struct btf *btf, int kind, const char *name, int ref
int sz, name_off = 0;
if (validate_type_id(ref_type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
if (name && name[0]) {
name_off = btf__add_str(btf, name);
@@ -1831,15 +1830,15 @@ int btf__add_array(struct btf *btf, int index_type_id, int elem_type_id, __u32 n
int sz;
if (validate_type_id(index_type_id) || validate_type_id(elem_type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type) + sizeof(struct btf_array);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
t->name_off = 0;
t->info = btf_type_info(BTF_KIND_ARRAY, 0, 0);
@@ -1860,12 +1859,12 @@ static int btf_add_composite(struct btf *btf, int kind, const char *name, __u32
int sz, name_off = 0;
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
if (name && name[0]) {
name_off = btf__add_str(btf, name);
@@ -1943,30 +1942,30 @@ int btf__add_field(struct btf *btf, const char *name, int type_id,
/* last type should be union/struct */
if (btf->nr_types == 0)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
t = btf_last_type(btf);
if (!btf_is_composite(t))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (validate_type_id(type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* best-effort bit field offset/size enforcement */
is_bitfield = bit_size || (bit_offset % 8 != 0);
if (is_bitfield && (bit_size == 0 || bit_size > 255 || bit_offset > 0xffffff))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* only offset 0 is allowed for unions */
if (btf_is_union(t) && bit_offset)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* decompose and invalidate raw data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_member);
m = btf_add_type_mem(btf, sz);
if (!m)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
if (name && name[0]) {
name_off = btf__add_str(btf, name);
@@ -2008,15 +2007,15 @@ int btf__add_enum(struct btf *btf, const char *name, __u32 byte_sz)
/* byte_sz must be power of 2 */
if (!byte_sz || (byte_sz & (byte_sz - 1)) || byte_sz > 8)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
if (name && name[0]) {
name_off = btf__add_str(btf, name);
@@ -2048,25 +2047,25 @@ int btf__add_enum_value(struct btf *btf, const char *name, __s64 value)
/* last type should be BTF_KIND_ENUM */
if (btf->nr_types == 0)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
t = btf_last_type(btf);
if (!btf_is_enum(t))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* non-empty name */
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (value < INT_MIN || value > UINT_MAX)
- return -E2BIG;
+ return libbpf_err(-E2BIG);
/* decompose and invalidate raw data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_enum);
v = btf_add_type_mem(btf, sz);
if (!v)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
name_off = btf__add_str(btf, name);
if (name_off < 0)
@@ -2096,7 +2095,7 @@ int btf__add_enum_value(struct btf *btf, const char *name, __s64 value)
int btf__add_fwd(struct btf *btf, const char *name, enum btf_fwd_kind fwd_kind)
{
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
switch (fwd_kind) {
case BTF_FWD_STRUCT:
@@ -2117,7 +2116,7 @@ int btf__add_fwd(struct btf *btf, const char *name, enum btf_fwd_kind fwd_kind)
*/
return btf__add_enum(btf, name, sizeof(int));
default:
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
}
@@ -2132,7 +2131,7 @@ int btf__add_fwd(struct btf *btf, const char *name, enum btf_fwd_kind fwd_kind)
int btf__add_typedef(struct btf *btf, const char *name, int ref_type_id)
{
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
return btf_add_ref_kind(btf, BTF_KIND_TYPEDEF, name, ref_type_id);
}
@@ -2187,10 +2186,10 @@ int btf__add_func(struct btf *btf, const char *name,
int id;
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (linkage != BTF_FUNC_STATIC && linkage != BTF_FUNC_GLOBAL &&
linkage != BTF_FUNC_EXTERN)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
id = btf_add_ref_kind(btf, BTF_KIND_FUNC, name, proto_type_id);
if (id > 0) {
@@ -2198,7 +2197,7 @@ int btf__add_func(struct btf *btf, const char *name,
t->info = btf_type_info(BTF_KIND_FUNC, linkage, 0);
}
- return id;
+ return libbpf_err(id);
}
/*
@@ -2219,15 +2218,15 @@ int btf__add_func_proto(struct btf *btf, int ret_type_id)
int sz;
if (validate_type_id(ret_type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
/* start out with vlen=0; this will be adjusted when adding enum
* values, if necessary
@@ -2254,23 +2253,23 @@ int btf__add_func_param(struct btf *btf, const char *name, int type_id)
int sz, name_off = 0;
if (validate_type_id(type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* last type should be BTF_KIND_FUNC_PROTO */
if (btf->nr_types == 0)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
t = btf_last_type(btf);
if (!btf_is_func_proto(t))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* decompose and invalidate raw data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_param);
p = btf_add_type_mem(btf, sz);
if (!p)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
if (name && name[0]) {
name_off = btf__add_str(btf, name);
@@ -2308,21 +2307,21 @@ int btf__add_var(struct btf *btf, const char *name, int linkage, int type_id)
/* non-empty name */
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (linkage != BTF_VAR_STATIC && linkage != BTF_VAR_GLOBAL_ALLOCATED &&
linkage != BTF_VAR_GLOBAL_EXTERN)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (validate_type_id(type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* deconstruct BTF, if necessary, and invalidate raw_data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type) + sizeof(struct btf_var);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
name_off = btf__add_str(btf, name);
if (name_off < 0)
@@ -2357,15 +2356,15 @@ int btf__add_datasec(struct btf *btf, const char *name, __u32 byte_sz)
/* non-empty name */
if (!name || !name[0])
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_type);
t = btf_add_type_mem(btf, sz);
if (!t)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
name_off = btf__add_str(btf, name);
if (name_off < 0)
@@ -2397,22 +2396,22 @@ int btf__add_datasec_var_info(struct btf *btf, int var_type_id, __u32 offset, __
/* last type should be BTF_KIND_DATASEC */
if (btf->nr_types == 0)
- return -EINVAL;
+ return libbpf_err(-EINVAL);
t = btf_last_type(btf);
if (!btf_is_datasec(t))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
if (validate_type_id(var_type_id))
- return -EINVAL;
+ return libbpf_err(-EINVAL);
/* decompose and invalidate raw data */
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
sz = sizeof(struct btf_var_secinfo);
v = btf_add_type_mem(btf, sz);
if (!v)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
v->type = var_type_id;
v->offset = offset;
@@ -2614,11 +2613,11 @@ struct btf_ext *btf_ext__new(__u8 *data, __u32 size)
err = btf_ext_parse_hdr(data, size);
if (err)
- return ERR_PTR(err);
+ return libbpf_err_ptr(err);
btf_ext = calloc(1, sizeof(struct btf_ext));
if (!btf_ext)
- return ERR_PTR(-ENOMEM);
+ return libbpf_err_ptr(-ENOMEM);
btf_ext->data_size = size;
btf_ext->data = malloc(size);
@@ -2628,9 +2627,11 @@ struct btf_ext *btf_ext__new(__u8 *data, __u32 size)
}
memcpy(btf_ext->data, data, size);
- if (btf_ext->hdr->hdr_len <
- offsetofend(struct btf_ext_header, line_info_len))
+ if (btf_ext->hdr->hdr_len < offsetofend(struct btf_ext_header, line_info_len)) {
+ err = -EINVAL;
goto done;
+ }
+
err = btf_ext_setup_func_info(btf_ext);
if (err)
goto done;
@@ -2639,8 +2640,11 @@ struct btf_ext *btf_ext__new(__u8 *data, __u32 size)
if (err)
goto done;
- if (btf_ext->hdr->hdr_len < offsetofend(struct btf_ext_header, core_relo_len))
+ if (btf_ext->hdr->hdr_len < offsetofend(struct btf_ext_header, core_relo_len)) {
+ err = -EINVAL;
goto done;
+ }
+
err = btf_ext_setup_core_relos(btf_ext);
if (err)
goto done;
@@ -2648,7 +2652,7 @@ struct btf_ext *btf_ext__new(__u8 *data, __u32 size)
done:
if (err) {
btf_ext__free(btf_ext);
- return ERR_PTR(err);
+ return libbpf_err_ptr(err);
}
return btf_ext;
@@ -2687,7 +2691,7 @@ static int btf_ext_reloc_info(const struct btf *btf,
existing_len = (*cnt) * record_size;
data = realloc(*info, existing_len + records_len);
if (!data)
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
memcpy(data + existing_len, sinfo->data, records_len);
/* adjust insn_off only, the rest data will be passed
@@ -2697,15 +2701,14 @@ static int btf_ext_reloc_info(const struct btf *btf,
__u32 *insn_off;
insn_off = data + existing_len + (i * record_size);
- *insn_off = *insn_off / sizeof(struct bpf_insn) +
- insns_cnt;
+ *insn_off = *insn_off / sizeof(struct bpf_insn) + insns_cnt;
}
*info = data;
*cnt += sinfo->num_info;
return 0;
}
- return -ENOENT;
+ return libbpf_err(-ENOENT);
}
int btf_ext__reloc_func_info(const struct btf *btf,
@@ -2894,11 +2897,11 @@ int btf__dedup(struct btf *btf, struct btf_ext *btf_ext,
if (IS_ERR(d)) {
pr_debug("btf_dedup_new failed: %ld", PTR_ERR(d));
- return -EINVAL;
+ return libbpf_err(-EINVAL);
}
if (btf_ensure_modifiable(btf))
- return -ENOMEM;
+ return libbpf_err(-ENOMEM);
err = btf_dedup_prep(d);
if (err) {
@@ -2938,7 +2941,7 @@ int btf__dedup(struct btf *btf, struct btf_ext *btf_ext,
done:
btf_dedup_free(d);
- return err;
+ return libbpf_err(err);
}
#define BTF_UNPROCESSED_ID ((__u32)-1)
@@ -4411,7 +4414,7 @@ struct btf *libbpf_find_kernel_btf(void)
char path[PATH_MAX + 1];
struct utsname buf;
struct btf *btf;
- int i;
+ int i, err;
uname(&buf);
@@ -4425,17 +4428,16 @@ struct btf *libbpf_find_kernel_btf(void)
btf = btf__parse_raw(path);
else
btf = btf__parse_elf(path, NULL);
-
- pr_debug("loading kernel BTF '%s': %ld\n",
- path, IS_ERR(btf) ? PTR_ERR(btf) : 0);
- if (IS_ERR(btf))
+ err = libbpf_get_error(btf);
+ pr_debug("loading kernel BTF '%s': %d\n", path, err);
+ if (err)
continue;
return btf;
}
pr_warn("failed to find valid kernel BTF\n");
- return ERR_PTR(-ESRCH);
+ return libbpf_err_ptr(-ESRCH);
}
int btf_type_visit_type_ids(struct btf_type *t, type_id_visit_fn visit, void *ctx)
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 13:28:19 +0000