diff options
Diffstat (limited to 'linker/linker.cpp')
| -rw-r--r-- | linker/linker.cpp | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/linker/linker.cpp b/linker/linker.cpp index d21625edb..799ec50ef 100644 --- a/linker/linker.cpp +++ b/linker/linker.cpp @@ -4142,6 +4142,20 @@ static void init_default_namespace() { extern "C" int __system_properties_init(void); +static const char* get_executable_path() { + static std::string executable_path; + if (executable_path.empty()) { + char path[PATH_MAX]; + ssize_t path_len = readlink("/proc/self/exe", path, sizeof(path)); + if (path_len == -1 || path_len >= static_cast<ssize_t>(sizeof(path))) { + __libc_fatal("readlink('/proc/self/exe') failed: %s", strerror(errno)); + } + executable_path = std::string(path, path_len); + } + + return executable_path.c_str(); +} + /* * This code is called after the linker has linked itself and * fixed it's own GOT. It is safe to make references to externs @@ -4188,7 +4202,13 @@ static ElfW(Addr) __linker_init_post_relocation(KernelArgumentBlock& args, ElfW( } } - soinfo* si = soinfo_alloc(&g_default_namespace, args.argv[0], nullptr, 0, RTLD_GLOBAL); + const char* executable_path = get_executable_path(); + struct stat file_stat; + if (TEMP_FAILURE_RETRY(stat(executable_path, &file_stat)) != 0) { + __libc_fatal("unable to stat file for the executable \"%s\": %s", executable_path, strerror(errno)); + } + + soinfo* si = soinfo_alloc(&g_default_namespace, executable_path, &file_stat, 0, RTLD_GLOBAL); if (si == nullptr) { __libc_fatal("Couldn't allocate soinfo: out of memory?"); } @@ -4201,7 +4221,7 @@ static ElfW(Addr) __linker_init_post_relocation(KernelArgumentBlock& args, ElfW( // gdb aware of them before loading the rest of the dependency // tree. map->l_addr = 0; - map->l_name = args.argv[0]; + map->l_name = const_cast<char*>(executable_path); insert_link_map_into_debug_map(map); init_linker_info_for_gdb(linker_base); |