diff options
Diffstat (limited to 'tools/bpf/resolve_btfids/main.c')
| -rw-r--r-- | tools/bpf/resolve_btfids/main.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c index 0def0bb1f783..dfa540d8a02d 100644 --- a/tools/bpf/resolve_btfids/main.c +++ b/tools/bpf/resolve_btfids/main.c @@ -199,9 +199,16 @@ static char *get_id(const char *prefix_end) /* * __BTF_ID__func__vfs_truncate__0 * prefix_end = ^ + * pos = ^ */ - char *p, *id = strdup(prefix_end + sizeof("__") - 1); + int len = strlen(prefix_end); + int pos = sizeof("__") - 1; + char *p, *id; + if (pos >= len) + return NULL; + + id = strdup(prefix_end + pos); if (id) { /* * __BTF_ID__func__vfs_truncate__0 @@ -220,6 +227,24 @@ static char *get_id(const char *prefix_end) return id; } +static struct btf_id *add_set(struct object *obj, char *name) +{ + /* + * __BTF_ID__set__name + * name = ^ + * id = ^ + */ + char *id = name + sizeof(BTF_SET "__") - 1; + int len = strlen(name); + + if (id >= name + len) { + pr_err("FAILED to parse set name: %s\n", name); + return NULL; + } + + return btf_id__add(&obj->sets, id, true); +} + static struct btf_id *add_symbol(struct rb_root *root, char *name, size_t size) { char *id; @@ -412,7 +437,7 @@ static int symbols_collect(struct object *obj) id = add_symbol(&obj->funcs, prefix, sizeof(BTF_FUNC) - 1); /* set */ } else if (!strncmp(prefix, BTF_SET, sizeof(BTF_SET) - 1)) { - id = add_symbol(&obj->sets, prefix, sizeof(BTF_SET) - 1); + id = add_set(obj, prefix); /* * SET objects store list's count, which is encoded * in symbol's size, together with 'cnt' field hence |