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Gunderson" , James Clark , Stephen Brennan , Andi Kleen , Dmitry Vyukov , Zhongqiu Han , Yicong Yang , "=?UTF-8?q?Krzysztof=20=C5=81opatowski?=" , "Dr. David Alan Gilbert" , Zixian Cai , Steve Clevenger , Thomas Falcon , Martin Liska , "=?UTF-8?q?Martin=20Li=C5=A1ka?=" , Song Liu , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Pass in a size argument rather than implying all build id strings must be SBUILD_ID_SIZE. Signed-off-by: Ian Rogers --- tools/perf/builtin-buildid-cache.c | 12 +++---- tools/perf/builtin-buildid-list.c | 6 ++-- tools/perf/util/build-id.c | 33 ++++++++----------- tools/perf/util/build-id.h | 6 ++-- tools/perf/util/disasm.c | 2 +- tools/perf/util/dso.c | 4 +-- tools/perf/util/dsos.c | 2 +- tools/perf/util/event.c | 2 +- tools/perf/util/header.c | 2 +- tools/perf/util/map.c | 2 +- tools/perf/util/probe-file.c | 4 +-- .../scripting-engines/trace-event-python.c | 7 ++-- tools/perf/util/symbol.c | 2 +- 13 files changed, 38 insertions(+), 46 deletions(-) diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildi= d-cache.c index b0511d16aeb6..3f7739b21148 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -31,7 +31,7 @@ #include #include =20 -static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuil= did) +static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuil= did, size_t sbuildid_size) { char root_dir[PATH_MAX]; char *p; @@ -42,7 +42,7 @@ static int build_id_cache__kcore_buildid(const char *proc= _dir, char *sbuildid) if (!p) return -1; *p =3D '\0'; - return sysfs__sprintf_build_id(root_dir, sbuildid); + return sysfs__snprintf_build_id(root_dir, sbuildid, sbuildid_size); } =20 static int build_id_cache__kcore_dir(char *dir, size_t sz) @@ -128,7 +128,7 @@ static int build_id_cache__add_kcore(const char *filena= me, bool force) return -1; *p =3D '\0'; =20 - if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0) + if (build_id_cache__kcore_buildid(from_dir, sbuildid, sizeof(sbuildid)) <= 0) return -1; =20 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s", @@ -187,7 +187,7 @@ static int build_id_cache__add_file(const char *filenam= e, struct nsinfo *nsi) return -1; } =20 - build_id__sprintf(&bid, sbuild_id); + build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id)); err =3D build_id_cache__add_s(sbuild_id, filename, nsi, false, false); pr_debug("Adding %s %s: %s\n", sbuild_id, filename, @@ -211,7 +211,7 @@ static int build_id_cache__remove_file(const char *file= name, struct nsinfo *nsi) return -1; } =20 - build_id__sprintf(&bid, sbuild_id); + build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id)); err =3D build_id_cache__remove_s(sbuild_id); pr_debug("Removing %s %s: %s\n", sbuild_id, filename, err ? "FAIL" : "Ok"); @@ -317,7 +317,7 @@ static int build_id_cache__update_file(const char *file= name, struct nsinfo *nsi) } err =3D 0; =20 - build_id__sprintf(&bid, sbuild_id); + build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id)); if (build_id_cache__cached(sbuild_id)) err =3D build_id_cache__remove_s(sbuild_id); =20 diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid= -list.c index 52dfacaff8e3..ba8ba0303920 100644 --- a/tools/perf/builtin-buildid-list.c +++ b/tools/perf/builtin-buildid-list.c @@ -31,7 +31,7 @@ static int buildid__map_cb(struct map *map, void *arg __m= aybe_unused) =20 memset(bid_buf, 0, sizeof(bid_buf)); if (dso__has_build_id(dso)) - build_id__sprintf(dso__bid_const(dso), bid_buf); + build_id__snprintf(dso__bid_const(dso), bid_buf, sizeof(bid_buf)); printf("%s %16" PRIx64 " %16" PRIx64, bid_buf, map__start(map), map__end(= map)); if (dso_long_name !=3D NULL) printf(" %s", dso_long_name); @@ -57,7 +57,7 @@ static int sysfs__fprintf_build_id(FILE *fp) char sbuild_id[SBUILD_ID_SIZE]; int ret; =20 - ret =3D sysfs__sprintf_build_id("/", sbuild_id); + ret =3D sysfs__snprintf_build_id("/", sbuild_id, sizeof(sbuild_id)); if (ret !=3D sizeof(sbuild_id)) return ret < 0 ? ret : -EINVAL; =20 @@ -69,7 +69,7 @@ static int filename__fprintf_build_id(const char *name, F= ILE *fp) char sbuild_id[SBUILD_ID_SIZE]; int ret; =20 - ret =3D filename__sprintf_build_id(name, sbuild_id); + ret =3D filename__snprintf_build_id(name, sbuild_id, sizeof(sbuild_id)); if (ret !=3D sizeof(sbuild_id)) return ret < 0 ? ret : -EINVAL; =20 diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index 5bc2040bdd0d..aa35dceace90 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -67,24 +67,17 @@ int build_id__mark_dso_hit(const struct perf_tool *tool= __maybe_unused, return 0; } =20 -int build_id__sprintf(const struct build_id *build_id, char *bf) +int build_id__snprintf(const struct build_id *build_id, char *bf, size_t b= f_size) { - char *bid =3D bf; - const u8 *raw =3D build_id->data; - size_t i; - - bf[0] =3D 0x0; + size_t offs =3D 0; =20 - for (i =3D 0; i < build_id->size; ++i) { - sprintf(bid, "%02x", *raw); - ++raw; - bid +=3D 2; - } + for (size_t i =3D 0; i < build_id->size && offs < bf_size; ++i) + offs +=3D snprintf(bf + offs, bf_size - offs, "%02x", build_id->data[i]); =20 - return (bid - bf) + 1; + return offs; } =20 -int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id) +int sysfs__snprintf_build_id(const char *root_dir, char *sbuild_id, size_t= sbuild_id_size) { char notes[PATH_MAX]; struct build_id bid; @@ -99,10 +92,10 @@ int sysfs__sprintf_build_id(const char *root_dir, char = *sbuild_id) if (ret < 0) return ret; =20 - return build_id__sprintf(&bid, sbuild_id); + return build_id__snprintf(&bid, sbuild_id, sbuild_id_size); } =20 -int filename__sprintf_build_id(const char *pathname, char *sbuild_id) +int filename__snprintf_build_id(const char *pathname, char *sbuild_id, siz= e_t sbuild_id_size) { struct build_id bid; int ret; @@ -111,7 +104,7 @@ int filename__sprintf_build_id(const char *pathname, ch= ar *sbuild_id) if (ret < 0) return ret; =20 - return build_id__sprintf(&bid, sbuild_id); + return build_id__snprintf(&bid, sbuild_id, sbuild_id_size); } =20 /* asnprintf consolidates asprintf and snprintf */ @@ -212,9 +205,9 @@ static bool build_id_cache__valid_id(char *sbuild_id) return false; =20 if (!strcmp(pathname, DSO__NAME_KALLSYMS)) - ret =3D sysfs__sprintf_build_id("/", real_sbuild_id); + ret =3D sysfs__snprintf_build_id("/", real_sbuild_id, sizeof(real_sbuild= _id)); else if (pathname[0] =3D=3D '/') - ret =3D filename__sprintf_build_id(pathname, real_sbuild_id); + ret =3D filename__snprintf_build_id(pathname, real_sbuild_id, sizeof(rea= l_sbuild_id)); else ret =3D -EINVAL; /* Should we support other special DSO cache? */ if (ret >=3D 0) @@ -243,7 +236,7 @@ char *__dso__build_id_filename(const struct dso *dso, c= har *bf, size_t size, if (!dso__has_build_id(dso)) return NULL; =20 - build_id__sprintf(dso__bid_const(dso), sbuild_id); + build_id__snprintf(dso__bid_const(dso), sbuild_id, sizeof(sbuild_id)); linkname =3D build_id_cache__linkname(sbuild_id, NULL, 0); if (!linkname) return NULL; @@ -769,7 +762,7 @@ static int build_id_cache__add_b(const struct build_id = *bid, { char sbuild_id[SBUILD_ID_SIZE]; =20 - build_id__sprintf(bid, sbuild_id); + build_id__snprintf(bid, sbuild_id, sizeof(sbuild_id)); =20 return __build_id_cache__add_s(sbuild_id, name, nsi, is_kallsyms, is_vdso, proper_name, root_dir); diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h index e3e0a446ff0c..47e621cebe1b 100644 --- a/tools/perf/util/build-id.h +++ b/tools/perf/util/build-id.h @@ -21,10 +21,10 @@ struct feat_fd; struct nsinfo; =20 void build_id__init(struct build_id *bid, const u8 *data, size_t size); -int build_id__sprintf(const struct build_id *build_id, char *bf); +int build_id__snprintf(const struct build_id *build_id, char *bf, size_t b= f_size); bool build_id__is_defined(const struct build_id *bid); -int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id); -int filename__sprintf_build_id(const char *pathname, char *sbuild_id); +int sysfs__snprintf_build_id(const char *root_dir, char *sbuild_id, size_t= sbuild_id_size); +int filename__snprintf_build_id(const char *pathname, char *sbuild_id, siz= e_t sbuild_id_size); char *build_id_cache__kallsyms_path(const char *sbuild_id, char *bf, size_t size); =20 diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index 8f0eb56c6fc6..96e6a5d6eacc 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -1218,7 +1218,7 @@ int symbol__strerror_disassemble(struct map_symbol *m= s, int errnum, char *buf, s char *build_id_msg =3D NULL; =20 if (dso__has_build_id(dso)) { - build_id__sprintf(dso__bid(dso), bf + 15); + build_id__snprintf(dso__bid(dso), bf + 15, sizeof(bf) - 15); build_id_msg =3D bf; } scnprintf(buf, buflen, diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 8619b6eea62d..776506b93b8b 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -217,7 +217,7 @@ int dso__read_binary_type_filename(const struct dso *ds= o, break; } =20 - build_id__sprintf(dso__bid_const(dso), build_id_hex); + build_id__snprintf(dso__bid_const(dso), build_id_hex, sizeof(build_id_he= x)); len =3D __symbol__join_symfs(filename, size, "/usr/lib/debug/.build-id/"= ); snprintf(filename + len, size - len, "%.2s/%s.debug", build_id_hex, build_id_hex + 2); @@ -1697,7 +1697,7 @@ static size_t dso__fprintf_buildid(struct dso *dso, F= ILE *fp) { char sbuild_id[SBUILD_ID_SIZE]; =20 - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); return fprintf(fp, "%s", sbuild_id); } =20 diff --git a/tools/perf/util/dsos.c b/tools/perf/util/dsos.c index e0998e2a7c4e..b2172632b3cd 100644 --- a/tools/perf/util/dsos.c +++ b/tools/perf/util/dsos.c @@ -370,7 +370,7 @@ static int dsos__fprintf_buildid_cb(struct dso *dso, vo= id *data) =20 if (args->skip && args->skip(dso, args->parm)) return 0; - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); args->ret +=3D fprintf(args->fp, "%-40s %s\n", sbuild_id, dso__long_name(= dso)); return 0; } diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index c23b77f8f854..34176050ebac 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -329,7 +329,7 @@ size_t perf_event__fprintf_mmap2(union perf_event *even= t, FILE *fp) =20 build_id__init(&bid, event->mmap2.build_id, event->mmap2.build_id_size); - build_id__sprintf(&bid, sbuild_id); + build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id)); =20 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx= 64 " <%s>]: %c%c%c%c %s\n", diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index e3cdc3b7b4ab..38e903307e8e 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2291,7 +2291,7 @@ static int __event_process_build_id(struct perf_recor= d_header_build_id *bev, free(m.name); } =20 - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); pr_debug("build id event received for %s: %s [%zu]\n", dso__long_name(dso), sbuild_id, size); dso__put(dso); diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index d729438b7d65..0f6b185f9589 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -354,7 +354,7 @@ int map__load(struct map *map) if (dso__has_build_id(dso)) { char sbuild_id[SBUILD_ID_SIZE]; =20 - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); pr_debug("%s with build id %s not found", name, sbuild_id); } else pr_debug("Failed to open %s", name); diff --git a/tools/perf/util/probe-file.c b/tools/perf/util/probe-file.c index ec8ac242fedb..5069fb61f48c 100644 --- a/tools/perf/util/probe-file.c +++ b/tools/perf/util/probe-file.c @@ -448,10 +448,10 @@ static int probe_cache__open(struct probe_cache *pcac= he, const char *target, if (!target || !strcmp(target, DSO__NAME_KALLSYMS)) { target =3D DSO__NAME_KALLSYMS; is_kallsyms =3D true; - ret =3D sysfs__sprintf_build_id("/", sbuildid); + ret =3D sysfs__snprintf_build_id("/", sbuildid, sizeof(sbuildid)); } else { nsinfo__mountns_enter(nsi, &nsc); - ret =3D filename__sprintf_build_id(target, sbuildid); + ret =3D filename__snprintf_build_id(target, sbuildid, sizeof(sbuildid)); nsinfo__mountns_exit(&nsc); } =20 diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools= /perf/util/scripting-engines/trace-event-python.c index 520729e78965..68e92552d954 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -780,14 +780,13 @@ static void set_sym_in_dict(PyObject *dict, struct ad= dr_location *al, const char *sym_field, const char *symoff_field, const char *map_pgoff) { - char sbuild_id[SBUILD_ID_SIZE]; - if (al->map) { + char sbuild_id[SBUILD_ID_SIZE]; struct dso *dso =3D map__dso(al->map); =20 pydict_set_item_string_decref(dict, dso_field, _PyUnicode_FromString(dso__name(dso))); - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); pydict_set_item_string_decref(dict, dso_bid_field, _PyUnicode_FromString(sbuild_id)); pydict_set_item_string_decref(dict, dso_map_start, @@ -1238,7 +1237,7 @@ static int python_export_dso(struct db_export *dbe, s= truct dso *dso, char sbuild_id[SBUILD_ID_SIZE]; PyObject *t; =20 - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); =20 t =3D tuple_new(5); =20 diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 11540219481b..30750ed313ca 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -2143,7 +2143,7 @@ static char *dso__find_kallsyms(struct dso *dso, stru= ct map *map) goto proc_kallsyms; } =20 - build_id__sprintf(dso__bid(dso), sbuild_id); + build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id)); =20 /* Find kallsyms in build-id cache with kcore */ scnprintf(path, sizeof(path), "%s/%s/%s", --=20 2.49.0.901.g37484f566f-goog