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Use realpath for log and error messages

Browse source 
Bug: http://b/20885931
Change-Id: Ida8ab7982ca75fa73da13c4cb10a6b2e53bc2c8e
This commit is contained in:
Dmitriy Ivanov 2015-05-07 10:48:00 -07:00
parent fff06e624d
commit 3edb9182ff
1 changed files with 60 additions and 56 deletions
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116
linker/linker.cpp
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@ -252,7 +252,7 @@ static void soinfo_free(soinfo* si) {
soinfo *prev = nullptr, *trav;
TRACE("name %s: freeing soinfo @ %p", si->get_soname(), si);
TRACE("name %s: freeing soinfo @ %p", si->get_realpath(), si);
for (trav = solist; trav != nullptr; trav = trav->next) {
if (trav == si) {
@ -263,7 +263,7 @@ static void soinfo_free(soinfo* si) {
if (trav == nullptr) {
// si was not in solist
DL_ERR("name \"%s\"@%p is not in solist!", si->get_soname(), si);
DL_ERR("name \"%s\"@%p is not in solist!", si->get_realpath(), si);
return;
}
@ -428,7 +428,7 @@ static bool for_each_verdef(const soinfo* si, F functor) {
if (verdef->vd_version != 1) {
DL_ERR("unsupported verdef[%zd] vd_version: %d (expected 1) library: %s",
i, verdef->vd_version, si->get_soname());
i, verdef->vd_version, si->get_realpath());
return false;
}
@ -498,7 +498,7 @@ static bool is_symbol_global_and_defined(const soinfo* si, const ElfW(Sym)* s) {
return s->st_shndx != SHN_UNDEF;
} else if (ELF_ST_BIND(s->st_info) != STB_LOCAL) {
DL_WARN("unexpected ST_BIND value: %d for '%s' in '%s'",
ELF_ST_BIND(s->st_info), si->get_string(s->st_name), si->get_soname());
ELF_ST_BIND(s->st_info), si->get_string(s->st_name), si->get_realpath());
}
return false;
@ -531,12 +531,12 @@ bool soinfo::gnu_lookup(SymbolName& symbol_name,
*symbol_index = 0;
TRACE_TYPE(LOOKUP, "SEARCH %s in %s@%p (gnu)",
symbol_name.get_name(), get_soname(), reinterpret_cast<void*>(base));
symbol_name.get_name(), get_realpath(), reinterpret_cast<void*>(base));
// test against bloom filter
if ((1 & (bloom_word >> (hash % bloom_mask_bits)) & (bloom_word >> (h2 % bloom_mask_bits))) == 0) {
TRACE_TYPE(LOOKUP, "NOT FOUND %s in %s@%p",
symbol_name.get_name(), get_soname(), reinterpret_cast<void*>(base));
symbol_name.get_name(), get_realpath(), reinterpret_cast<void*>(base));
return true;
}
@ -546,7 +546,7 @@ bool soinfo::gnu_lookup(SymbolName& symbol_name,
if (n == 0) {
TRACE_TYPE(LOOKUP, "NOT FOUND %s in %s@%p",
symbol_name.get_name(), get_soname(), reinterpret_cast<void*>(base));
symbol_name.get_name(), get_realpath(), reinterpret_cast<void*>(base));
return true;
}
@ -574,7 +574,7 @@ bool soinfo::gnu_lookup(SymbolName& symbol_name,
strcmp(get_string(s->st_name), symbol_name.get_name()) == 0 &&
is_symbol_global_and_defined(this, s)) {
TRACE_TYPE(LOOKUP, "FOUND %s in %s (%p) %zd",
symbol_name.get_name(), get_soname(), reinterpret_cast<void*>(s->st_value),
symbol_name.get_name(), get_realpath(), reinterpret_cast<void*>(s->st_value),
static_cast<size_t>(s->st_size));
*symbol_index = n;
return true;
@ -582,7 +582,7 @@ bool soinfo::gnu_lookup(SymbolName& symbol_name,
} while ((gnu_chain_[n++] & 1) == 0);
TRACE_TYPE(LOOKUP, "NOT FOUND %s in %s@%p",
symbol_name.get_name(), get_soname(), reinterpret_cast<void*>(base));
symbol_name.get_name(), get_realpath(), reinterpret_cast<void*>(base));
return true;
}
@ -593,7 +593,7 @@ bool soinfo::elf_lookup(SymbolName& symbol_name,
uint32_t hash = symbol_name.elf_hash();
TRACE_TYPE(LOOKUP, "SEARCH %s in %s@%p h=%x(elf) %zd",
symbol_name.get_name(), get_soname(),
symbol_name.get_name(), get_realpath(),
reinterpret_cast<void*>(base), hash, hash % nbucket_);
ElfW(Versym) verneed = 0;
@ -614,7 +614,7 @@ bool soinfo::elf_lookup(SymbolName& symbol_name,
strcmp(get_string(s->st_name), symbol_name.get_name()) == 0 &&
is_symbol_global_and_defined(this, s)) {
TRACE_TYPE(LOOKUP, "FOUND %s in %s (%p) %zd",
symbol_name.get_name(), get_soname(),
symbol_name.get_name(), get_realpath(),
reinterpret_cast<void*>(s->st_value),
static_cast<size_t>(s->st_size));
*symbol_index = n;
@ -623,7 +623,7 @@ bool soinfo::elf_lookup(SymbolName& symbol_name,
}
TRACE_TYPE(LOOKUP, "NOT FOUND %s in %s@%p %x %zd",
symbol_name.get_name(), get_soname(),
symbol_name.get_name(), get_realpath(),
reinterpret_cast<void*>(base), hash, hash % nbucket_);
*symbol_index = 0;
@ -703,7 +703,7 @@ bool soinfo_do_lookup(soinfo* si_from, const char* name, const version_info* vi,
* relocations for -Bsymbolic linked dynamic executables.
*/
if (si_from->has_DT_SYMBOLIC) {
DEBUG("%s: looking up %s in local scope (DT_SYMBOLIC)", si_from->get_soname(), name);
DEBUG("%s: looking up %s in local scope (DT_SYMBOLIC)", si_from->get_realpath(), name);
if (!si_from->find_symbol_by_name(symbol_name, vi, &s)) {
return false;
}
@ -718,7 +718,7 @@ bool soinfo_do_lookup(soinfo* si_from, const char* name, const version_info* vi,
bool error = false;
global_group.visit([&](soinfo* global_si) {
DEBUG("%s: looking up %s in %s (from global group)",
si_from->get_soname(), name, global_si->get_soname());
si_from->get_realpath(), name, global_si->get_realpath());
if (!global_si->find_symbol_by_name(symbol_name, vi, &s)) {
error = true;
return false;
@ -747,7 +747,7 @@ bool soinfo_do_lookup(soinfo* si_from, const char* name, const version_info* vi,
}
DEBUG("%s: looking up %s in %s (from local group)",
si_from->get_soname(), name, local_si->get_soname());
si_from->get_realpath(), name, local_si->get_realpath());
if (!local_si->find_symbol_by_name(symbol_name, vi, &s)) {
error = true;
return false;
@ -769,8 +769,8 @@ bool soinfo_do_lookup(soinfo* si_from, const char* name, const version_info* vi,
if (s != nullptr) {
TRACE_TYPE(LOOKUP, "si %s sym %s s->st_value = %p, "
"found in %s, base = %p, load bias = %p",
si_from->get_soname(), name, reinterpret_cast<void*>(s->st_value),
(*si_found_in)->get_soname(), reinterpret_cast<void*>((*si_found_in)->base),
si_from->get_realpath(), name, reinterpret_cast<void*>(s->st_value),
(*si_found_in)->get_realpath(), reinterpret_cast<void*>((*si_found_in)->base),
reinterpret_cast<void*>((*si_found_in)->load_bias));
}
@ -1498,7 +1498,7 @@ static void soinfo_unload(soinfo* root) {
}
if (!root->can_unload()) {
TRACE("not unloading '%s' - the binary is flagged with NODELETE", root->get_soname());
TRACE("not unloading '%s' - the binary is flagged with NODELETE", root->get_realpath());
return;
}
@ -1521,7 +1521,9 @@ static void soinfo_unload(soinfo* root) {
if (si->has_min_version(0)) {
soinfo* child = nullptr;
while ((child = si->get_children().pop_front()) != nullptr) {
TRACE("%s@%p needs to unload %s@%p", si->get_soname(), si, child->get_soname(), child);
TRACE("%s@%p needs to unload %s@%p", si->get_realpath(), si,
child->get_realpath(), child);
if (local_unload_list.contains(child)) {
continue;
} else if (child->is_linked() && child->get_local_group_root() != root) {
@ -1532,19 +1534,19 @@ static void soinfo_unload(soinfo* root) {
}
} else {
#if !defined(__arm__)
__libc_fatal("soinfo for \"%s\"@%p has no version", si->get_soname(), si);
__libc_fatal("soinfo for \"%s\"@%p has no version", si->get_realpath(), si);
#else
PRINT("warning: soinfo for \"%s\"@%p has no version", si->get_soname(), si);
PRINT("warning: soinfo for \"%s\"@%p has no version", si->get_realpath(), si);
for_each_dt_needed(si, [&] (const char* library_name) {
TRACE("deprecated (old format of soinfo): %s needs to unload %s",
si->get_soname(), library_name);
si->get_realpath(), library_name);
soinfo* needed = find_library(library_name, RTLD_NOLOAD, nullptr);
if (needed != nullptr) {
// Not found: for example if symlink was deleted between dlopen and dlclose
// Since we cannot really handle errors at this point - print and continue.
PRINT("warning: couldn't find %s needed by %s on unload.",
library_name, si->get_soname());
library_name, si->get_realpath());
return;
} else if (local_unload_list.contains(needed)) {
// already visited
@ -1574,7 +1576,8 @@ static void soinfo_unload(soinfo* root) {
soinfo_unload(si);
}
} else {
TRACE("not unloading '%s' group, decrementing ref_count to %zd", root->get_soname(), ref_count);
TRACE("not unloading '%s' group, decrementing ref_count to %zd",
root->get_realpath(), ref_count);
}
}
@ -1691,7 +1694,7 @@ bool VersionTracker::init_verneed(const soinfo* si_from) {
if (target_si == nullptr) {
DL_ERR("cannot find \"%s\" from verneed[%zd] in DT_NEEDED list for \"%s\"",
target_soname, i, si_from->get_soname());
target_soname, i, si_from->get_realpath());
return false;
}
@ -1738,7 +1741,7 @@ bool soinfo::lookup_version_info(const VersionTracker& version_tracker, ElfW(Wor
if (*vi == nullptr) {
DL_ERR("cannot find verneed/verdef for version index=%d "
"referenced by symbol \"%s\" at \"%s\"", sym_ver, sym_name, get_soname());
"referenced by symbol \"%s\" at \"%s\"", sym_ver, sym_name, get_realpath());
return false;
}
} else {
@ -1781,7 +1784,7 @@ bool soinfo::relocate(const VersionTracker& version_tracker, ElfRelIteratorT&& r
const char* sym_name = nullptr;
ElfW(Addr) addend = get_addend(rel, reloc);
DEBUG("Processing '%s' relocation at index %zd", get_soname(), idx);
DEBUG("Processing '%s' relocation at index %zd", get_realpath(), idx);
if (type == R_GENERIC_NONE) {
continue;
}
@ -1805,7 +1808,7 @@ bool soinfo::relocate(const VersionTracker& version_tracker, ElfRelIteratorT&& r
// We only allow an undefined symbol if this is a weak reference...
s = &symtab_[sym];
if (ELF_ST_BIND(s->st_info) != STB_WEAK) {
DL_ERR("cannot locate symbol \"%s\" referenced by \"%s\"...", sym_name, get_soname());
DL_ERR("cannot locate symbol \"%s\" referenced by \"%s\"...", sym_name, get_realpath());
return false;
}
@ -2001,7 +2004,7 @@ bool soinfo::relocate(const VersionTracker& version_tracker, ElfRelIteratorT&& r
* R_AARCH64_COPY may only appear in executable objects where e_type is
* set to ET_EXEC.
*/
DL_ERR("%s R_AARCH64_COPY relocations are not supported", get_soname());
DL_ERR("%s R_AARCH64_COPY relocations are not supported", get_realpath());
return false;
case R_AARCH64_TLS_TPREL64:
TRACE_TYPE(RELO, "RELO TLS_TPREL64 *** %16llx <- %16llx - %16llx\n",
@ -2058,7 +2061,7 @@ bool soinfo::relocate(const VersionTracker& version_tracker, ElfRelIteratorT&& r
* R_ARM_COPY may only appear in executable objects where e_type is
* set to ET_EXEC.
*/
DL_ERR("%s R_ARM_COPY relocations are not supported", get_soname());
DL_ERR("%s R_ARM_COPY relocations are not supported", get_realpath());
return false;
#elif defined(__i386__)
case R_386_32:
@ -2090,7 +2093,7 @@ void soinfo::call_array(const char* array_name __unused, linker_function_t* func
return;
}
TRACE("[ Calling %s (size %zd) @ %p for '%s' ]", array_name, count, functions, get_soname());
TRACE("[ Calling %s (size %zd) @ %p for '%s' ]", array_name, count, functions, get_realpath());
int begin = reverse ? (count - 1) : 0;
int end = reverse ? -1 : count;
@ -2101,7 +2104,7 @@ void soinfo::call_array(const char* array_name __unused, linker_function_t* func
call_function("function", functions[i]);
}
TRACE("[ Done calling %s for '%s' ]", array_name, get_soname());
TRACE("[ Done calling %s for '%s' ]", array_name, get_realpath());
}
void soinfo::call_function(const char* function_name __unused, linker_function_t function) {
@ -2109,9 +2112,9 @@ void soinfo::call_function(const char* function_name __unused, linker_function_t
return;
}
TRACE("[ Calling %s @ %p for '%s' ]", function_name, function, get_soname());
TRACE("[ Calling %s @ %p for '%s' ]", function_name, function, get_realpath());
function();
TRACE("[ Done calling %s @ %p for '%s' ]", function_name, function, get_soname());
TRACE("[ Done calling %s @ %p for '%s' ]", function_name, function, get_realpath());
}
void soinfo::call_pre_init_constructors() {
@ -2140,14 +2143,14 @@ void soinfo::call_constructors() {
if (!is_main_executable() && preinit_array_ != nullptr) {
// The GNU dynamic linker silently ignores these, but we warn the developer.
PRINT("\"%s\": ignoring %zd-entry DT_PREINIT_ARRAY in shared library!",
get_soname(), preinit_array_count_);
get_realpath(), preinit_array_count_);
}
get_children().for_each([] (soinfo* si) {
si->call_constructors();
});
TRACE("\"%s\": calling constructors", get_soname());
TRACE("\"%s\": calling constructors", get_realpath());
// DT_INIT should be called before DT_INIT_ARRAY if both are present.
call_function("DT_INIT", init_func_);
@ -2158,7 +2161,7 @@ void soinfo::call_destructors() {
if (!constructors_called) {
return;
}
TRACE("\"%s\": calling destructors", get_soname());
TRACE("\"%s\": calling destructors", get_realpath());
// DT_FINI_ARRAY must be parsed in reverse order.
call_array("DT_FINI_ARRAY", fini_array_, fini_array_count_, true);
@ -2318,7 +2321,7 @@ ElfW(Addr) soinfo::resolve_symbol_address(const ElfW(Sym)* s) const {
const char* soinfo::get_string(ElfW(Word) index) const {
if (has_min_version(1) && (index >= strtab_size_)) {
__libc_fatal("%s: strtab out of bounds error; STRSZ=%zd, name=%d",
get_soname(), strtab_size_, index);
get_realpath(), strtab_size_, index);
}
return strtab_ + index;
@ -2439,7 +2442,7 @@ bool soinfo::prelink_image() {
if (dynamic == nullptr) {
if (!relocating_linker) {
DL_ERR("missing PT_DYNAMIC in \"%s\"", get_soname());
DL_ERR("missing PT_DYNAMIC in \"%s\"", get_realpath());
}
return false;
} else {
@ -2823,15 +2826,15 @@ bool soinfo::prelink_image() {
}
if (nbucket_ == 0 && gnu_nbucket_ == 0) {
DL_ERR("empty/missing DT_HASH/DT_GNU_HASH in \"%s\" "
"(new hash type from the future?)", get_soname());
"(new hash type from the future?)", get_realpath());
return false;
}
if (strtab_ == 0) {
DL_ERR("empty/missing DT_STRTAB in \"%s\"", get_soname());
DL_ERR("empty/missing DT_STRTAB in \"%s\"", get_realpath());
return false;
}
if (symtab_ == 0) {
DL_ERR("empty/missing DT_SYMTAB in \"%s\"", get_soname());
DL_ERR("empty/missing DT_SYMTAB in \"%s\"", get_realpath());
return false;
}
return true;
@ -2856,10 +2859,10 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
// Make segments writable to allow text relocations to work properly. We will later call
// phdr_table_protect_segments() after all of them are applied and all constructors are run.
DL_WARN("%s has text relocations. This is wasting memory and prevents "
"security hardening. Please fix.", get_soname());
"security hardening. Please fix.", get_realpath());
if (phdr_table_unprotect_segments(phdr, phnum, load_bias) < 0) {
DL_ERR("can't unprotect loadable segments for \"%s\": %s",
get_soname(), strerror(errno));
get_realpath(), strerror(errno));
return false;
}
}
@ -2872,7 +2875,7 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
android_relocs_[1] == 'P' &&
android_relocs_[2] == 'S' &&
android_relocs_[3] == '2') {
DEBUG("[ android relocating %s ]", get_soname());
DEBUG("[ android relocating %s ]", get_realpath());
bool relocated = false;
const uint8_t* packed_relocs = android_relocs_ + 4;
@ -2895,14 +2898,14 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
#if defined(USE_RELA)
if (rela_ != nullptr) {
DEBUG("[ relocating %s ]", get_soname());
DEBUG("[ relocating %s ]", get_realpath());
if (!relocate(version_tracker,
plain_reloc_iterator(rela_, rela_count_), global_group, local_group)) {
return false;
}
}
if (plt_rela_ != nullptr) {
DEBUG("[ relocating %s plt ]", get_soname());
DEBUG("[ relocating %s plt ]", get_realpath());
if (!relocate(version_tracker,
plain_reloc_iterator(plt_rela_, plt_rela_count_), global_group, local_group)) {
return false;
@ -2910,14 +2913,14 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
}
#else
if (rel_ != nullptr) {
DEBUG("[ relocating %s ]", get_soname());
DEBUG("[ relocating %s ]", get_realpath());
if (!relocate(version_tracker,
plain_reloc_iterator(rel_, rel_count_), global_group, local_group)) {
return false;
}
}
if (plt_rel_ != nullptr) {
DEBUG("[ relocating %s plt ]", get_soname());
DEBUG("[ relocating %s plt ]", get_realpath());
if (!relocate(version_tracker,
plain_reloc_iterator(plt_rel_, plt_rel_count_), global_group, local_group)) {
return false;
@ -2931,14 +2934,14 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
}
#endif
DEBUG("[ finished linking %s ]", get_soname());
DEBUG("[ finished linking %s ]", get_realpath());
#if !defined(__LP64__)
if (has_text_relocations) {
// All relocations are done, we can protect our segments back to read-only.
if (phdr_table_protect_segments(phdr, phnum, load_bias) < 0) {
DL_ERR("can't protect segments for \"%s\": %s",
get_soname(), strerror(errno));
get_realpath(), strerror(errno));
return false;
}
}
@ -2947,7 +2950,7 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
/* We can also turn on GNU RELRO protection */
if (phdr_table_protect_gnu_relro(phdr, phnum, load_bias) < 0) {
DL_ERR("can't enable GNU RELRO protection for \"%s\": %s",
get_soname(), strerror(errno));
get_realpath(), strerror(errno));
return false;
}
@ -2956,14 +2959,14 @@ bool soinfo::link_image(const soinfo_list_t& global_group, const soinfo_list_t&
if (phdr_table_serialize_gnu_relro(phdr, phnum, load_bias,
extinfo->relro_fd) < 0) {
DL_ERR("failed serializing GNU RELRO section for \"%s\": %s",
get_soname(), strerror(errno));
get_realpath(), strerror(errno));
return false;
}
} else if (extinfo && (extinfo->flags & ANDROID_DLEXT_USE_RELRO)) {
if (phdr_table_map_gnu_relro(phdr, phnum, load_bias,
extinfo->relro_fd) < 0) {
DL_ERR("failed mapping GNU RELRO section for \"%s\": %s",
get_soname(), strerror(errno));
get_realpath(), strerror(errno));
return false;
}
}
@ -3238,7 +3241,7 @@ static ElfW(Addr) __linker_init_post_relocation(KernelArgumentBlock& args, ElfW(
fflush(stdout);
#endif
TRACE("[ Ready to execute '%s' @ %p ]", si->get_soname(), reinterpret_cast<void*>(si->entry));
TRACE("[ Ready to execute '%s' @ %p ]", si->get_realpath(), reinterpret_cast<void*>(si->entry));
return si->entry;
}
@ -3254,7 +3257,8 @@ static ElfW(Addr) __linker_init_post_relocation(KernelArgumentBlock& args, ElfW(
*/
static ElfW(Addr) get_elf_exec_load_bias(const ElfW(Ehdr)* elf) {
ElfW(Addr) offset = elf->e_phoff;
const ElfW(Phdr)* phdr_table = reinterpret_cast<const ElfW(Phdr)*>(reinterpret_cast<uintptr_t>(elf) + offset);
const ElfW(Phdr)* phdr_table =
reinterpret_cast<const ElfW(Phdr)*>(reinterpret_cast<uintptr_t>(elf) + offset);
const ElfW(Phdr)* phdr_end = phdr_table + elf->e_phnum;
for (const ElfW(Phdr)* phdr = phdr_table; phdr < phdr_end; phdr++) {