libbpf: Fix printf compilation warnings on ppc64le arch

On ppc64le __u64 and __s64 are defined as long int and unsigned long int,
respectively. This causes compiler to emit warning when %lld/%llu are used to
printf 64-bit numbers. Fix this by casting to size_t/ssize_t with %zu and %zd
format specifiers, respectively.

v1->v2:
- use size_t/ssize_t instead of custom typedefs (Martin).

Fixes: 1f8e2bcb2cd5 ("libbpf: Refactor relocation handling")
Fixes: abd29c931459 ("libbpf: allow specifying map definitions using BTF")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20191212171918.638010-1-andriin@fb.com

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 3f09772..920d4e0 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1242,15 +1242,15 @@ static int bpf_object__init_user_btf_map(struct bpf_object *obj,
                        }
                        sz = btf__resolve_size(obj->btf, t->type);
                        if (sz < 0) {
-                               pr_warn("map '%s': can't determine key size for type [%u]: %lld.\n",
-                                       map_name, t->type, sz);
+                               pr_warn("map '%s': can't determine key size for type [%u]: %zd.\n",
+                                       map_name, t->type, (ssize_t)sz);
                                return sz;
                        }
-                       pr_debug("map '%s': found key [%u], sz = %lld.\n",
-                                map_name, t->type, sz);
+                       pr_debug("map '%s': found key [%u], sz = %zd.\n",
+                                map_name, t->type, (ssize_t)sz);
                        if (map->def.key_size && map->def.key_size != sz) {
-                               pr_warn("map '%s': conflicting key size %u != %lld.\n",
-                                       map_name, map->def.key_size, sz);
+                               pr_warn("map '%s': conflicting key size %u != %zd.\n",
+                                       map_name, map->def.key_size, (ssize_t)sz);
                                return -EINVAL;
                        }
                        map->def.key_size = sz;
@@ -1285,15 +1285,15 @@ static int bpf_object__init_user_btf_map(struct bpf_object *obj,
                        }
                        sz = btf__resolve_size(obj->btf, t->type);
                        if (sz < 0) {
-                               pr_warn("map '%s': can't determine value size for type [%u]: %lld.\n",
-                                       map_name, t->type, sz);
+                               pr_warn("map '%s': can't determine value size for type [%u]: %zd.\n",
+                                       map_name, t->type, (ssize_t)sz);
                                return sz;
                        }
-                       pr_debug("map '%s': found value [%u], sz = %lld.\n",
-                                map_name, t->type, sz);
+                       pr_debug("map '%s': found value [%u], sz = %zd.\n",
+                                map_name, t->type, (ssize_t)sz);
                        if (map->def.value_size && map->def.value_size != sz) {
-                               pr_warn("map '%s': conflicting value size %u != %lld.\n",
-                                       map_name, map->def.value_size, sz);
+                               pr_warn("map '%s': conflicting value size %u != %zd.\n",
+                                       map_name, map->def.value_size, (ssize_t)sz);
                                return -EINVAL;
                        }
                        map->def.value_size = sz;
@@ -1817,7 +1817,8 @@ static int bpf_program__record_reloc(struct bpf_program *prog,
                        return -LIBBPF_ERRNO__RELOC;
                }
                if (sym->st_value % 8) {
-                       pr_warn("bad call relo offset: %llu\n", (__u64)sym->st_value);
+                       pr_warn("bad call relo offset: %zu\n",
+                               (size_t)sym->st_value);
                        return -LIBBPF_ERRNO__RELOC;
                }
                reloc_desc->type = RELO_CALL;
@@ -1859,8 +1860,8 @@ static int bpf_program__record_reloc(struct bpf_program *prog,
                        break;
                }
                if (map_idx >= nr_maps) {
-                       pr_warn("map relo failed to find map for sec %u, off %llu\n",
-                               shdr_idx, (__u64)sym->st_value);
+                       pr_warn("map relo failed to find map for sec %u, off %zu\n",
+                               shdr_idx, (size_t)sym->st_value);
                        return -LIBBPF_ERRNO__RELOC;
                }
                reloc_desc->type = RELO_LD64;
@@ -1941,9 +1942,9 @@ bpf_program__collect_reloc(struct bpf_program *prog, GElf_Shdr *shdr,
                name = elf_strptr(obj->efile.elf, obj->efile.strtabidx,
                                  sym.st_name) ? : "<?>";
 
-               pr_debug("relo for shdr %u, symb %llu, value %llu, type %d, bind %d, name %d (\'%s\'), insn %u\n",
-                        (__u32)sym.st_shndx, (__u64)GELF_R_SYM(rel.r_info),
-                        (__u64)sym.st_value, GELF_ST_TYPE(sym.st_info),
+               pr_debug("relo for shdr %u, symb %zu, value %zu, type %d, bind %d, name %d (\'%s\'), insn %u\n",
+                        (__u32)sym.st_shndx, (size_t)GELF_R_SYM(rel.r_info),
+                        (size_t)sym.st_value, GELF_ST_TYPE(sym.st_info),
                         GELF_ST_BIND(sym.st_info), sym.st_name, name,
                         insn_idx);