diff options
Diffstat (limited to 'src/shared/elf-util.c')
| -rw-r--r-- | src/shared/elf-util.c | 96 |
1 files changed, 53 insertions, 43 deletions
diff --git a/src/shared/elf-util.c b/src/shared/elf-util.c index 24ed16e..9d1f494 100644 --- a/src/shared/elf-util.c +++ b/src/shared/elf-util.c @@ -38,55 +38,60 @@ static void *dw_dl = NULL; static void *elf_dl = NULL; /* libdw symbols */ -Dwarf_Attribute *(*sym_dwarf_attr_integrate)(Dwarf_Die *, unsigned int, Dwarf_Attribute *); -const char *(*sym_dwarf_diename)(Dwarf_Die *); -const char *(*sym_dwarf_formstring)(Dwarf_Attribute *); -int (*sym_dwarf_getscopes)(Dwarf_Die *, Dwarf_Addr, Dwarf_Die **); -int (*sym_dwarf_getscopes_die)(Dwarf_Die *, Dwarf_Die **); -Elf *(*sym_dwelf_elf_begin)(int); +static DLSYM_FUNCTION(dwarf_attr_integrate); +static DLSYM_FUNCTION(dwarf_diename); +static DLSYM_FUNCTION(dwarf_formstring); +static DLSYM_FUNCTION(dwarf_getscopes); +static DLSYM_FUNCTION(dwarf_getscopes_die); +static DLSYM_FUNCTION(dwelf_elf_begin); #if HAVE_DWELF_ELF_E_MACHINE_STRING -const char *(*sym_dwelf_elf_e_machine_string)(int); +static DLSYM_FUNCTION(dwelf_elf_e_machine_string); #endif -ssize_t (*sym_dwelf_elf_gnu_build_id)(Elf *, const void **); -int (*sym_dwarf_tag)(Dwarf_Die *); -Dwfl_Module *(*sym_dwfl_addrmodule)(Dwfl *, Dwarf_Addr); -Dwfl *(*sym_dwfl_begin)(const Dwfl_Callbacks *); -int (*sym_dwfl_build_id_find_elf)(Dwfl_Module *, void **, const char *, Dwarf_Addr, char **, Elf **); -int (*sym_dwfl_core_file_attach)(Dwfl *, Elf *); -int (*sym_dwfl_core_file_report)(Dwfl *, Elf *, const char *); -void (*sym_dwfl_end)(Dwfl *); -const char *(*sym_dwfl_errmsg)(int); -int (*sym_dwfl_errno)(void); -bool (*sym_dwfl_frame_pc)(Dwfl_Frame *, Dwarf_Addr *, bool *); -ptrdiff_t (*sym_dwfl_getmodules)(Dwfl *, int (*)(Dwfl_Module *, void **, const char *, Dwarf_Addr, void *), void *, ptrdiff_t); -int (*sym_dwfl_getthreads)(Dwfl *, int (*)(Dwfl_Thread *, void *), void *); -Dwarf_Die *(*sym_dwfl_module_addrdie)(Dwfl_Module *, Dwarf_Addr, Dwarf_Addr *); -const char *(*sym_dwfl_module_addrname)(Dwfl_Module *, GElf_Addr); -int (*sym_dwfl_module_build_id)(Dwfl_Module *, const unsigned char **, GElf_Addr *); -Elf *(*sym_dwfl_module_getelf)(Dwfl_Module *, GElf_Addr *); -const char *(*sym_dwfl_module_info)(Dwfl_Module *, void ***, Dwarf_Addr *, Dwarf_Addr *, Dwarf_Addr *, Dwarf_Addr *, const char **, const char **); -int (*sym_dwfl_offline_section_address)(Dwfl_Module *, void **, const char *, Dwarf_Addr, const char *, GElf_Word, const GElf_Shdr *, Dwarf_Addr *); -int (*sym_dwfl_report_end)(Dwfl *, int (*)(Dwfl_Module *, void *, const char *, Dwarf_Addr, void *), void *); -int (*sym_dwfl_standard_find_debuginfo)(Dwfl_Module *, void **, const char *, Dwarf_Addr, const char *, const char *, GElf_Word, char **); -int (*sym_dwfl_thread_getframes)(Dwfl_Thread *, int (*)(Dwfl_Frame *, void *), void *); -pid_t (*sym_dwfl_thread_tid)(Dwfl_Thread *); +static DLSYM_FUNCTION(dwelf_elf_gnu_build_id); +static DLSYM_FUNCTION(dwarf_tag); +static DLSYM_FUNCTION(dwfl_addrmodule); +static DLSYM_FUNCTION(dwfl_begin); +static DLSYM_FUNCTION(dwfl_build_id_find_elf); +static DLSYM_FUNCTION(dwfl_core_file_attach); +static DLSYM_FUNCTION(dwfl_core_file_report); +static DLSYM_FUNCTION(dwfl_end); +static DLSYM_FUNCTION(dwfl_errmsg); +static DLSYM_FUNCTION(dwfl_errno); +static DLSYM_FUNCTION(dwfl_frame_pc); +static DLSYM_FUNCTION(dwfl_getmodules); +static DLSYM_FUNCTION(dwfl_getthreads); +static DLSYM_FUNCTION(dwfl_module_addrdie); +static DLSYM_FUNCTION(dwfl_module_addrname); +static DLSYM_FUNCTION(dwfl_module_build_id); +static DLSYM_FUNCTION(dwfl_module_getelf); +static DLSYM_FUNCTION(dwfl_module_info); +static DLSYM_FUNCTION(dwfl_offline_section_address); +static DLSYM_FUNCTION(dwfl_report_end); +static DLSYM_FUNCTION(dwfl_standard_find_debuginfo); +static DLSYM_FUNCTION(dwfl_thread_getframes); +static DLSYM_FUNCTION(dwfl_thread_tid); /* libelf symbols */ -Elf *(*sym_elf_begin)(int, Elf_Cmd, Elf *); -int (*sym_elf_end)(Elf *); -Elf_Data *(*sym_elf_getdata_rawchunk)(Elf *, int64_t, size_t, Elf_Type); -GElf_Ehdr *(*sym_gelf_getehdr)(Elf *, GElf_Ehdr *); -int (*sym_elf_getphdrnum)(Elf *, size_t *); -const char *(*sym_elf_errmsg)(int); -int (*sym_elf_errno)(void); -Elf *(*sym_elf_memory)(char *, size_t); -unsigned int (*sym_elf_version)(unsigned int); -GElf_Phdr *(*sym_gelf_getphdr)(Elf *, int, GElf_Phdr *); -size_t (*sym_gelf_getnote)(Elf_Data *, size_t, GElf_Nhdr *, size_t *, size_t *); +static DLSYM_FUNCTION(elf_begin); +static DLSYM_FUNCTION(elf_end); +static DLSYM_FUNCTION(elf_getdata_rawchunk); +static DLSYM_FUNCTION(gelf_getehdr); +static DLSYM_FUNCTION(elf_getphdrnum); +static DLSYM_FUNCTION(elf_errmsg); +static DLSYM_FUNCTION(elf_errno); +static DLSYM_FUNCTION(elf_memory); +static DLSYM_FUNCTION(elf_version); +static DLSYM_FUNCTION(gelf_getphdr); +static DLSYM_FUNCTION(gelf_getnote); int dlopen_dw(void) { int r; + ELF_NOTE_DLOPEN("dw", + "Support for backtrace and ELF package metadata decoding from core files", + ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED, + "libdw.so.1"); + r = dlopen_many_sym_or_warn( &dw_dl, "libdw.so.1", LOG_DEBUG, DLSYM_ARG(dwarf_getscopes), @@ -130,6 +135,11 @@ int dlopen_dw(void) { int dlopen_elf(void) { int r; + ELF_NOTE_DLOPEN("elf", + "Support for backtraces and reading ELF package metadata from core files", + ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED, + "libelf.so.1"); + r = dlopen_many_sym_or_warn( &elf_dl, "libelf.so.1", LOG_DEBUG, DLSYM_ARG(elf_begin), @@ -348,7 +358,7 @@ static int parse_package_metadata(const char *name, JsonVariant *id_json, Elf *e /* Package metadata is in PT_NOTE headers. */ program_header = sym_gelf_getphdr(elf, i, &mem); - if (!program_header || (program_header->p_type != PT_NOTE && program_header->p_type != PT_INTERP)) + if (!program_header || !IN_SET(program_header->p_type, PT_NOTE, PT_INTERP)) continue; if (program_header->p_type == PT_INTERP) { @@ -540,7 +550,7 @@ static int module_callback(Dwfl_Module *mod, void **userdata, const char *name, continue; /* Check that the end of segment is a valid address. */ - if (__builtin_add_overflow(program_header->p_vaddr, program_header->p_memsz, &end_of_segment)) { + if (!ADD_SAFE(&end_of_segment, program_header->p_vaddr, program_header->p_memsz)) { log_error("Abort due to corrupted core dump, end of segment address %#zx + %#zx overflows", (size_t)program_header->p_vaddr, (size_t)program_header->p_memsz); return DWARF_CB_ABORT; } |