mirrors/binutils-gdb
0
0
Fork 0
mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-11-27 03:54:41 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

_bfd_alloc_and_read

Browse Source 
This patch provides two new inline functions that are then used in
places that allocate memory, read from file, and then deallocate on a
read failure.

	* libbfd-in.h (_bfd_alloc_and_read, _bfd_malloc_and_read): New.
	* aoutx.h (aout_get_external_symbols): Replace calls to
	bfd_[m]alloc and bfd_bread with call to _bfd_[m]alloc_and_read.
	(slurp_reloc_table): Likewise.
	* archive.c (do_slurp_bsd_armap): Likewise.
	(do_slurp_coff_armap): Likewise.
	* archive64.c (_bfd_archive_64_bit_slurp_armap): Likewise.
	* coff-rs6000.c (_bfd_xcoff_slurp_armap): Likewise.
	* coff64-rs6000.c (xcoff64_slurp_armap): Likewise.
	* coffcode.h (coff_set_arch_mach_hook, buy_and_read): Likewise.
	* coffgen.c (coff_real_object_p, coff_object_p, build_debug_section),
	(_bfd_coff_get_external_symbols): Likewise.
	* ecoff.c (ecoff_slurp_symbolic_header),
	(_bfd_ecoff_slurp_symbolic_info, ecoff_slurp_reloc_table),
	(_bfd_ecoff_slurp_armap, ecoff_link_add_object_symbols, READ),
	(ecoff_indirect_link_order): Likewise.
	* elf.c (bfd_elf_get_str_section, setup_group, elf_read_notes),
	(_bfd_elf_slurp_version_tables): Likewise.
	* elf32-m32c.c (m32c_elf_relax_section): Likewise.
	* elf32-rl78.c (rl78_elf_relax_section): Likewise.
	* elf32-rx.c (elf32_rx_relax_section): Likewise.
	* elf64-alpha.c (READ): Likewise.
	* elf64-mips.c (mips_elf64_slurp_one_reloc_table): Likewise.
	* elf64-sparc.c (elf64_sparc_slurp_one_reloc_table): Likewise.
	* elfcode.h (elf_slurp_symbol_table),
	(elf_slurp_reloc_table_from_section): Likewise.
	* elflink.c (elf_link_add_object_symbols),
	(elf_link_check_versioned_symbol): Likewise.
	* elfxx-mips.c (READ): Likewise.
	* i386lynx.c (slurp_reloc_table): Likewise.
	* lynx-core.c (lynx_core_file_p): Likewise.
	* mach-o.c (bfd_mach_o_canonicalize_relocs),
	(bfd_mach_o_read_symtab_strtab, bfd_mach_o_alloc_and_read),
	(bfd_mach_o_read_prebound_dylib, bfd_mach_o_read_dyld_content
	* pdp11.c (aout_get_external_symbols, slurp_reloc_table
	* pef.c (bfd_pef_print_loader_section, bfd_pef_scan_start_address),
	(bfd_pef_parse_symbols): Likewise.
	* peicode.h (pe_ILF_object_p, pe_bfd_object_p
	* som.c (setup_sections, som_slurp_string_table),
	(som_slurp_reloc_table, som_bfd_count_ar_symbols),
	(som_bfd_fill_in_ar_symbols): Likewise.
	* vms-alpha.c (module_find_nearest_line, evax_bfd_print_dst),
	(evax_bfd_print_image): Likewise.
	* vms-lib.c (_bfd_vms_lib_archive_p): Likewise.
	* wasm-module.c (wasm_scan): Likewise.
	* xcofflink.c (xcoff_link_add_symbols): Likewise.
	* xsym.c (bfd_sym_read_name_table),
	(bfd_sym_print_type_information_table_entry): Likewise.
	* libbfd.h: Regenerate.
This commit is contained in:
Alan Modra 2020-02-19 13:16:01 +10:30
parent 806470a219
commit 2bb3687ba8
33 changed files with 314 additions and 441 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
bfd/ChangeLog
View File

@ -1,3 +1,55 @@
2020-02-19 Alan Modra <amodra@gmail.com>
* libbfd-in.h (_bfd_alloc_and_read, _bfd_malloc_and_read): New.
* aoutx.h (aout_get_external_symbols): Replace calls to
bfd_[m]alloc and bfd_bread with call to _bfd_[m]alloc_and_read.
(slurp_reloc_table): Likewise.
* archive.c (do_slurp_bsd_armap): Likewise.
(do_slurp_coff_armap): Likewise.
* archive64.c (_bfd_archive_64_bit_slurp_armap): Likewise.
* coff-rs6000.c (_bfd_xcoff_slurp_armap): Likewise.
* coff64-rs6000.c (xcoff64_slurp_armap): Likewise.
* coffcode.h (coff_set_arch_mach_hook, buy_and_read): Likewise.
* coffgen.c (coff_real_object_p, coff_object_p, build_debug_section),
(_bfd_coff_get_external_symbols): Likewise.
* ecoff.c (ecoff_slurp_symbolic_header),
(_bfd_ecoff_slurp_symbolic_info, ecoff_slurp_reloc_table),
(_bfd_ecoff_slurp_armap, ecoff_link_add_object_symbols, READ),
(ecoff_indirect_link_order): Likewise.
* elf.c (bfd_elf_get_str_section, setup_group, elf_read_notes),
(_bfd_elf_slurp_version_tables): Likewise.
* elf32-m32c.c (m32c_elf_relax_section): Likewise.
* elf32-rl78.c (rl78_elf_relax_section): Likewise.
* elf32-rx.c (elf32_rx_relax_section): Likewise.
* elf64-alpha.c (READ): Likewise.
* elf64-mips.c (mips_elf64_slurp_one_reloc_table): Likewise.
* elf64-sparc.c (elf64_sparc_slurp_one_reloc_table): Likewise.
* elfcode.h (elf_slurp_symbol_table),
(elf_slurp_reloc_table_from_section): Likewise.
* elflink.c (elf_link_add_object_symbols),
(elf_link_check_versioned_symbol): Likewise.
* elfxx-mips.c (READ): Likewise.
* i386lynx.c (slurp_reloc_table): Likewise.
* lynx-core.c (lynx_core_file_p): Likewise.
* mach-o.c (bfd_mach_o_canonicalize_relocs),
(bfd_mach_o_read_symtab_strtab, bfd_mach_o_alloc_and_read),
(bfd_mach_o_read_prebound_dylib, bfd_mach_o_read_dyld_content
* pdp11.c (aout_get_external_symbols, slurp_reloc_table
* pef.c (bfd_pef_print_loader_section, bfd_pef_scan_start_address),
(bfd_pef_parse_symbols): Likewise.
* peicode.h (pe_ILF_object_p, pe_bfd_object_p
* som.c (setup_sections, som_slurp_string_table),
(som_slurp_reloc_table, som_bfd_count_ar_symbols),
(som_bfd_fill_in_ar_symbols): Likewise.
* vms-alpha.c (module_find_nearest_line, evax_bfd_print_dst),
(evax_bfd_print_image): Likewise.
* vms-lib.c (_bfd_vms_lib_archive_p): Likewise.
* wasm-module.c (wasm_scan): Likewise.
* xcofflink.c (xcoff_link_add_symbols): Likewise.
* xsym.c (bfd_sym_read_name_table),
(bfd_sym_print_type_information_table_entry): Likewise.
* libbfd.h: Regenerate.
2020-02-19 Alan Modra <amodra@gmail.com>
* aoutx.h (slurp_reloc_table): Allocate reloc_cache after

20
bfd/aoutx.h
View File

@ -1303,16 +1303,11 @@ aout_get_external_symbols (bfd *abfd)
/* We allocate using malloc to make the values easy to free
later on. If we put them on the objalloc it might not be
possible to free them. */
syms = (struct external_nlist *) bfd_malloc (amt);
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
return FALSE;
syms = (struct external_nlist *) _bfd_malloc_and_read (abfd, amt, amt);
if (syms == NULL)
return FALSE;
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
|| bfd_bread (syms, amt, abfd) != amt)
{
free (syms);
return FALSE;
}
#endif
obj_aout_external_syms (abfd) = syms;
@ -2323,17 +2318,10 @@ NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
return FALSE;
relocs = bfd_malloc (reloc_size);
relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size);
if (relocs == NULL)
return FALSE;
if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
{
free (relocs);
return FALSE;
}
amt = count * sizeof (arelent);
reloc_cache = (arelent *) bfd_zmalloc (amt);
if (reloc_cache == NULL)

21
bfd/archive.c
View File

@ -968,16 +968,11 @@ do_slurp_bsd_armap (bfd *abfd)
if (parsed_size < 4)
return FALSE;
raw_armap = (bfd_byte *) bfd_alloc (abfd, parsed_size);
raw_armap = (bfd_byte *) _bfd_alloc_and_read (abfd, parsed_size, parsed_size);
if (raw_armap == NULL)
return FALSE;
if (bfd_bread (raw_armap, parsed_size, abfd) != parsed_size)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_malformed_archive);
byebye:
bfd_release (abfd, raw_armap);
return FALSE;
}
@ -987,7 +982,8 @@ do_slurp_bsd_armap (bfd *abfd)
{
/* Probably we're using the wrong byte ordering. */
bfd_set_error (bfd_error_wrong_format);
goto byebye;
bfd_release (abfd, raw_armap);
return FALSE;
}
rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE;
@ -997,7 +993,10 @@ do_slurp_bsd_armap (bfd *abfd)
amt = ardata->symdef_count * sizeof (carsym);
ardata->symdefs = (struct carsym *) bfd_alloc (abfd, amt);
if (!ardata->symdefs)
return FALSE;
{
bfd_release (abfd, raw_armap);
return FALSE;
}
for (counter = 0, set = ardata->symdefs;
counter < ardata->symdef_count;
@ -1081,10 +1080,8 @@ do_slurp_coff_armap (bfd *abfd)
stringbase = ((char *) ardata->symdefs) + carsym_size;
/* Allocate and read in the raw offsets. */
raw_armap = (int *) bfd_alloc (abfd, ptrsize);
if (raw_armap == NULL)
goto release_symdefs;
if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
raw_armap = (int *) _bfd_alloc_and_read (abfd, ptrsize, ptrsize);
if (raw_armap == NULL
|| (bfd_bread (stringbase, stringsize, abfd) != stringsize))
{
if (bfd_get_error () != bfd_error_system_call)

7
bfd/archive64.c
View File

@ -108,11 +108,8 @@ _bfd_archive_64_bit_slurp_armap (bfd *abfd)
carsyms = ardata->symdefs;
stringbase = ((char *) ardata->symdefs) + carsym_size;
raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
if (raw_armap == NULL)
goto release_symdefs;
if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
raw_armap = (bfd_byte *) _bfd_alloc_and_read (abfd, ptrsize, ptrsize);
if (raw_armap == NULL
|| bfd_bread (stringbase, stringsize, abfd) != stringsize)
{
if (bfd_get_error () != bfd_error_system_call)

8
bfd/coff-rs6000.c
View File

@ -1267,11 +1267,9 @@ _bfd_xcoff_slurp_armap (bfd *abfd)
}
/* Read in the entire symbol table. */
contents = (bfd_byte *) bfd_alloc (abfd, sz + 1);
contents = (bfd_byte *) _bfd_alloc_and_read (abfd, sz + 1, sz);
if (contents == NULL)
return FALSE;
if (bfd_bread (contents, sz, abfd) != sz)
return FALSE;
/* Ensure strings are NULL terminated so we don't wander off the
end of the buffer. */
@ -1331,11 +1329,9 @@ _bfd_xcoff_slurp_armap (bfd *abfd)
}
/* Read in the entire symbol table. */
contents = (bfd_byte *) bfd_alloc (abfd, sz + 1);
contents = (bfd_byte *) _bfd_alloc_and_read (abfd, sz + 1, sz);
if (contents == NULL)
return FALSE;
if (bfd_bread (contents, sz, abfd) != sz)
return FALSE;
/* Ensure strings are NULL terminated so we don't wander off the
end of the buffer. */

4
bfd/coff64-rs6000.c
View File

@ -1940,11 +1940,9 @@ xcoff64_slurp_armap (bfd *abfd)
}
/* Read in the entire symbol table. */
contents = (bfd_byte *) bfd_alloc (abfd, sz + 1);
contents = (bfd_byte *) _bfd_alloc_and_read (abfd, sz + 1, sz);
if (contents == NULL)
return FALSE;
if (bfd_bread (contents, sz, abfd) != sz)
return FALSE;
/* Ensure strings are NULL terminated so we don't wander off the end
of the buffer. */

19
bfd/coffcode.h
View File

@ -2222,15 +2222,11 @@ coff_set_arch_mach_hook (bfd *abfd, void * filehdr)
struct internal_syment sym;
bfd_size_type amt = bfd_coff_symesz (abfd);
buf = bfd_malloc (amt);
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
return FALSE;
buf = _bfd_malloc_and_read (abfd, amt, amt);
if (buf == NULL)
return FALSE;
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
|| bfd_bread (buf, amt, abfd) != amt)
{
free (buf);
return FALSE;
}
bfd_coff_swap_sym_in (abfd, buf, & sym);
if (sym.n_sclass == C_FILE)
cputype = sym.n_type & 0xff;
@ -4200,7 +4196,6 @@ static void *
buy_and_read (bfd *abfd, file_ptr where,
bfd_size_type nmemb, bfd_size_type size)
{
void *area;
size_t amt;
if (_bfd_mul_overflow (nmemb, size, &amt))
@ -4208,13 +4203,9 @@ buy_and_read (bfd *abfd, file_ptr where,
bfd_set_error (bfd_error_file_too_big);
return NULL;
}
area = bfd_alloc (abfd, amt);
if (!area)
if (bfd_seek (abfd, where, SEEK_SET) != 0)
return NULL;
if (bfd_seek (abfd, where, SEEK_SET) != 0
|| bfd_bread (area, amt, abfd) != amt)
return NULL;
return area;
return _bfd_alloc_and_read (abfd, amt, amt);
}
/*

62
bfd/coffgen.c
View File

@ -275,13 +275,10 @@ coff_real_object_p (bfd *abfd,
scnhsz = bfd_coff_scnhsz (abfd);
readsize = (bfd_size_type) nscns * scnhsz;
external_sections = (char *) bfd_alloc (abfd, readsize);
external_sections = (char *) _bfd_alloc_and_read (abfd, readsize, readsize);
if (!external_sections)
goto fail;
if (bfd_bread ((void *) external_sections, readsize, abfd) != readsize)
goto fail;
/* Set the arch/mach *before* swapping in sections; section header swapping
may depend on arch/mach info. */
if (! bfd_coff_set_arch_mach_hook (abfd, (void *) internal_f))
@ -332,14 +329,11 @@ coff_object_p (bfd *abfd)
filhsz = bfd_coff_filhsz (abfd);
aoutsz = bfd_coff_aoutsz (abfd);
filehdr = bfd_alloc (abfd, filhsz);
filehdr = _bfd_alloc_and_read (abfd, filhsz, filhsz);
if (filehdr == NULL)
return NULL;
if (bfd_bread (filehdr, filhsz, abfd) != filhsz)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
bfd_release (abfd, filehdr);
return NULL;
}
bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f);
@ -365,18 +359,13 @@ coff_object_p (bfd *abfd)
{
void * opthdr;
opthdr = bfd_alloc (abfd, aoutsz);
opthdr = _bfd_alloc_and_read (abfd, aoutsz, internal_f.f_opthdr);
if (opthdr == NULL)
return NULL;
if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd)
!= internal_f.f_opthdr)
{
bfd_release (abfd, opthdr);
return NULL;
}
/* PR 17512: file: 11056-1136-0.004. */
if (internal_f.f_opthdr < aoutsz)
memset (((char *) opthdr) + internal_f.f_opthdr, 0, aoutsz - internal_f.f_opthdr);
memset (((char *) opthdr) + internal_f.f_opthdr, 0,
aoutsz - internal_f.f_opthdr);
bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a);
bfd_release (abfd, opthdr);
@ -1593,19 +1582,20 @@ build_debug_section (bfd *abfd, asection ** sect_return)
return NULL;
}
sec_size = sect->size;
debug_section = (char *) bfd_alloc (abfd, sec_size);
if (debug_section == NULL)
return NULL;
/* Seek to the beginning of the `.debug' section and read it.
Save the current position first; it is needed by our caller.
Then read debug section and reset the file pointer. */
position = bfd_tell (abfd);
if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0
|| bfd_bread (debug_section, sec_size, abfd) != sec_size
|| bfd_seek (abfd, position, SEEK_SET) != 0)
if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0)
return NULL;
sec_size = sect->size;
debug_section = (char *) _bfd_alloc_and_read (abfd, sec_size, sec_size);
if (debug_section == NULL)
return NULL;
if (bfd_seek (abfd, position, SEEK_SET) != 0)
return NULL;
* sect_return = sect;
@ -1662,27 +1652,11 @@ _bfd_coff_get_external_symbols (bfd *abfd)
if (size == 0)
return TRUE;
syms = bfd_malloc (size);
if (syms == NULL)
{
/* PR 21013: Provide an error message when the alloc fails. */
_bfd_error_handler (_("%pB: not enough memory to allocate space "
"for %#" PRIx64 " symbols of size %#" PRIx64),
abfd, (uint64_t) obj_raw_syment_count (abfd),
(uint64_t) symesz);
return FALSE;
}
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
|| bfd_bread (syms, size, abfd) != size)
{
if (syms != NULL)
free (syms);
return FALSE;
}
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
return FALSE;
syms = _bfd_malloc_and_read (abfd, size, size);
obj_coff_external_syms (abfd) = syms;
return TRUE;
return syms != NULL;
}
/* Read in the external strings. The strings are not loaded until

69
bfd/ecoff.c
View File

@ -465,13 +465,12 @@ ecoff_slurp_symbolic_header (bfd *abfd)
}
/* Read the symbolic information header. */
raw = bfd_malloc (external_hdr_size);
if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos, SEEK_SET) != 0)
goto error_return;
raw = _bfd_malloc_and_read (abfd, external_hdr_size, external_hdr_size);
if (raw == NULL)
goto error_return;
if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos, SEEK_SET) != 0
|| bfd_bread (raw, external_hdr_size, abfd) != external_hdr_size)
goto error_return;
internal_symhdr = &ecoff_data (abfd)->debug_info.symbolic_header;
(*backend->debug_swap.swap_hdr_in) (abfd, raw, internal_symhdr);
@ -571,18 +570,13 @@ _bfd_ecoff_slurp_symbolic_info (bfd *abfd,
ecoff_data (abfd)->sym_filepos = 0;
return TRUE;
}
raw = bfd_alloc (abfd, raw_size);
if (raw == NULL)
return FALSE;
pos = ecoff_data (abfd)->sym_filepos;
pos += backend->debug_swap.external_hdr_size;
if (bfd_seek (abfd, pos, SEEK_SET) != 0
|| bfd_bread (raw, raw_size, abfd) != raw_size)
{
bfd_release (abfd, raw);
return FALSE;
}
if (bfd_seek (abfd, pos, SEEK_SET) != 0)
return FALSE;
raw = _bfd_alloc_and_read (abfd, raw_size, raw_size);
if (raw == NULL)
return FALSE;
ecoff_data (abfd)->raw_syments = raw;
@ -1611,7 +1605,7 @@ ecoff_slurp_reloc_table (bfd *abfd,
arelent *internal_relocs;
bfd_size_type external_reloc_size;
bfd_size_type amt;
char *external_relocs;
bfd_byte *external_relocs;
arelent *rptr;
unsigned int i;
@ -1625,12 +1619,10 @@ ecoff_slurp_reloc_table (bfd *abfd,
external_reloc_size = backend->external_reloc_size;
amt = external_reloc_size * section->reloc_count;
external_relocs = (char *) bfd_alloc (abfd, amt);
if (external_relocs == NULL)
return FALSE;
if (bfd_seek (abfd, section->rel_filepos, SEEK_SET) != 0)
return FALSE;
if (bfd_bread (external_relocs, amt, abfd) != amt)
external_relocs = _bfd_alloc_and_read (abfd, amt, amt);
if (external_relocs == NULL)
return FALSE;
amt = section->reloc_count;
@ -2945,15 +2937,11 @@ _bfd_ecoff_slurp_armap (bfd *abfd)
parsed_size = mapdata->parsed_size;
free (mapdata);
raw_armap = (char *) bfd_alloc (abfd, parsed_size);
raw_armap = (char *) _bfd_alloc_and_read (abfd, parsed_size, parsed_size);
if (raw_armap == NULL)
return FALSE;
if (bfd_bread ((void *) raw_armap, parsed_size, abfd) != parsed_size)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_malformed_archive);
bfd_release (abfd, (void *) raw_armap);
return FALSE;
}
@ -3503,25 +3491,21 @@ ecoff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
symhdr = &ecoff_data (abfd)->debug_info.symbolic_header;
/* Read in the external symbols and external strings. */
if (bfd_seek (abfd, symhdr->cbExtOffset, SEEK_SET) != 0)
return FALSE;
external_ext_size = ecoff_backend (abfd)->debug_swap.external_ext_size;
esize = symhdr->iextMax * external_ext_size;
external_ext = bfd_malloc (esize);
external_ext = _bfd_malloc_and_read (abfd, esize, esize);
if (external_ext == NULL && esize != 0)
goto error_return;
if (bfd_seek (abfd, (file_ptr) symhdr->cbExtOffset, SEEK_SET) != 0
|| bfd_bread (external_ext, esize, abfd) != esize)
if (bfd_seek (abfd, symhdr->cbSsExtOffset, SEEK_SET) != 0)
goto error_return;
ssext = (char *) bfd_malloc ((bfd_size_type) symhdr->issExtMax);
ssext = (char *) _bfd_malloc_and_read (abfd, symhdr->issExtMax,
symhdr->issExtMax);
if (ssext == NULL && symhdr->issExtMax != 0)
goto error_return;
if (bfd_seek (abfd, (file_ptr) symhdr->cbSsExtOffset, SEEK_SET) != 0
|| (bfd_bread (ssext, (bfd_size_type) symhdr->issExtMax, abfd)
!= (bfd_size_type) symhdr->issExtMax))
goto error_return;
result = ecoff_link_add_externals (abfd, info, external_ext, ssext);
if (ssext != NULL)
@ -3775,14 +3759,13 @@ ecoff_final_link_debug_accumulate (bfd *output_bfd,
ret = FALSE; \
goto return_something; \
} \
debug->ptr = (type) bfd_malloc (amt); \
if (debug->ptr == NULL) \
if (bfd_seek (input_bfd, symhdr->offset, SEEK_SET) != 0) \
{ \
ret = FALSE; \
goto return_something; \
} \
if (bfd_seek (input_bfd, symhdr->offset, SEEK_SET) != 0 \
|| bfd_bread (debug->ptr, amt, input_bfd) != amt) \
debug->ptr = (type) _bfd_malloc_and_read (input_bfd, amt, amt); \
if (debug->ptr == NULL) \
{ \
ret = FALSE; \
goto return_something; \
@ -3887,13 +3870,11 @@ ecoff_indirect_link_order (bfd *output_bfd,
external_reloc_size = ecoff_backend (input_bfd)->external_reloc_size;
external_relocs_size = external_reloc_size * input_section->reloc_count;
external_relocs = bfd_malloc (external_relocs_size);
if (external_relocs == NULL && external_relocs_size != 0)
if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0)
goto error_return;
if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
|| (bfd_bread (external_relocs, external_relocs_size, input_bfd)
!= external_relocs_size))
external_relocs = _bfd_malloc_and_read (input_bfd, external_relocs_size,
external_relocs_size);
if (external_relocs == NULL && external_relocs_size != 0)
goto error_return;
/* Relocate the section contents. */

43
bfd/elf.c
View File

@ -298,14 +298,9 @@ bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
if (shstrtabsize + 1 <= 1
|| shstrtabsize > bfd_get_file_size (abfd)
|| bfd_seek (abfd, offset, SEEK_SET) != 0
|| (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL)
shstrtab = NULL;
else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize)
|| (shstrtab = _bfd_alloc_and_read (abfd, shstrtabsize + 1,
shstrtabsize)) == NULL)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_file_truncated);
bfd_release (abfd, shstrtab);
shstrtab = NULL;
/* Once we've failed to read it, make sure we don't keep
trying. Otherwise, we'll keep allocating space for
the string table over and over. */
@ -675,10 +670,9 @@ setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
shdr->contents = NULL;
if (_bfd_mul_overflow (shdr->sh_size,
sizeof (*dest) / 4, &amt)
|| (shdr->contents = bfd_alloc (abfd, amt)) == NULL
|| bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (shdr->contents, shdr->sh_size, abfd)
!= shdr->sh_size))
|| !(shdr->contents
= _bfd_alloc_and_read (abfd, amt, shdr->sh_size)))
{
_bfd_error_handler
/* xgettext:c-format */
@ -687,14 +681,6 @@ setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
abfd, (uint64_t) shdr->sh_size);
bfd_set_error (bfd_error_bad_value);
-- num_group;
/* PR 17510: If the group contents are even
partially corrupt, do not allow any of the
contents to be used. */
if (shdr->contents != NULL)
{
bfd_release (abfd, shdr->contents);
shdr->contents = NULL;
}
continue;
}
@ -8612,12 +8598,11 @@ error_return_verref:
abfd, (uint64_t) hdr->sh_size);
goto error_return_verref;
}
contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
if (contents == NULL)
goto error_return_verref;
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0)
goto error_return_verref;
contents = _bfd_malloc_and_read (abfd, hdr->sh_size, hdr->sh_size);
if (contents == NULL)
goto error_return_verref;
if (_bfd_mul_overflow (hdr->sh_info, sizeof (Elf_Internal_Verneed), &amt))
@ -8747,11 +8732,10 @@ error_return_verref:
goto error_return;
}
contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
if (contents == NULL)
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0)
goto error_return_verdef;
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
contents = _bfd_malloc_and_read (abfd, hdr->sh_size, hdr->sh_size);
if (contents == NULL)
goto error_return_verdef;
BFD_ASSERT (sizeof (Elf_External_Verdef)
@ -11937,7 +11921,7 @@ elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size,
if (bfd_seek (abfd, offset, SEEK_SET) != 0)
return FALSE;
buf = (char *) bfd_malloc (size + 1);
buf = (char *) _bfd_malloc_and_read (abfd, size + 1, size);
if (buf == NULL)
return FALSE;
@ -11945,8 +11929,7 @@ elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size,
0-termintate the buffer so that string searches will not overflow. */
buf[size] = 0;
if (bfd_bread (buf, size, abfd) != size
|| !elf_parse_notes (abfd, buf, size, offset, align))
if (!elf_parse_notes (abfd, buf, size, offset, align))
{
free (buf);
return FALSE;

7
bfd/elf32-m32c.c
View File

@ -1499,11 +1499,10 @@ m32c_elf_relax_section
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
shndx_buf = bfd_malloc (amt);
if (shndx_buf == NULL)
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0)
goto error_return;
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (shndx_buf, amt, abfd) != amt)
shndx_buf = _bfd_malloc_and_read (abfd, amt, amt);
if (shndx_buf == NULL)
goto error_return;
shndx_hdr->contents = shndx_buf;
}

7
bfd/elf32-rl78.c
View File

@ -2129,11 +2129,10 @@ rl78_elf_relax_section
bfd_set_error (bfd_error_no_memory);
goto error_return;
}
shndx_buf = bfd_malloc (amt);
if (shndx_buf == NULL)
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0)
goto error_return;
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (shndx_buf, amt, abfd) != amt)
shndx_buf = _bfd_malloc_and_read (abfd, amt, amt);
if (shndx_buf == NULL)
goto error_return;
shndx_hdr->contents = shndx_buf;
}

7
bfd/elf32-rx.c
View File

@ -2066,11 +2066,10 @@ elf32_rx_relax_section (bfd * abfd,
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
shndx_buf = bfd_malloc (amt);
if (shndx_buf == NULL)
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0)
goto error_return;
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (shndx_buf, amt, abfd) != amt)
shndx_buf = _bfd_malloc_and_read (abfd, amt, amt);
if (shndx_buf == NULL)
goto error_return;
shndx_hdr->contents = shndx_buf;
}

7
bfd/elf64-alpha.c
View File

@ -1398,11 +1398,10 @@ elf64_alpha_read_ecoff_info (bfd *abfd, asection *section,
bfd_set_error (bfd_error_file_too_big); \
goto error_return; \
} \
debug->ptr = (type) bfd_malloc (amt); \
if (debug->ptr == NULL) \
if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0) \
goto error_return; \
if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
|| bfd_bread (debug->ptr, amt, abfd) != amt) \
debug->ptr = (type) _bfd_malloc_and_read (abfd, amt, amt); \
if (debug->ptr == NULL) \
goto error_return; \
} while (0)

9
bfd/elf64-mips.c
View File

@ -4010,15 +4010,12 @@ mips_elf64_slurp_one_reloc_table (bfd *abfd, asection *asect,
int entsize;
bfd_boolean rela_p;
allocated = bfd_malloc (rel_hdr->sh_size);
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0)
return FALSE;
allocated = _bfd_malloc_and_read (abfd, rel_hdr->sh_size, rel_hdr->sh_size);
if (allocated == NULL)
return FALSE;
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (allocated, rel_hdr->sh_size, abfd)
!= rel_hdr->sh_size))
goto error_return;
native_relocs = allocated;
entsize = rel_hdr->sh_entsize;

10
bfd/elf64-sparc.c
View File

@ -79,13 +79,11 @@ elf64_sparc_slurp_one_reloc_table (bfd *abfd, asection *asect,
bfd_size_type count;
arelent *relents;
allocated = bfd_malloc (rel_hdr->sh_size);
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0)
return FALSE;
allocated = _bfd_malloc_and_read (abfd, rel_hdr->sh_size, rel_hdr->sh_size);
if (allocated == NULL)
goto error_return;
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)
goto error_return;
return FALSE;
native_relocs = (bfd_byte *) allocated;

18
bfd/elfcode.h
View File

@ -1234,13 +1234,10 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic)
{
if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0)
goto error_return;
xverbuf = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size);
xverbuf = (Elf_External_Versym *)
_bfd_malloc_and_read (abfd, verhdr->sh_size, verhdr->sh_size);
if (xverbuf == NULL && verhdr->sh_size != 0)
goto error_return;
if (bfd_bread (xverbuf, verhdr->sh_size, abfd) != verhdr->sh_size)
goto error_return;
}
/* Skip first symbol, which is a null dummy. */
@ -1429,14 +1426,11 @@ elf_slurp_reloc_table_from_section (bfd *abfd,
int entsize;
unsigned int symcount;
allocated = bfd_malloc (rel_hdr->sh_size);
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0)
return FALSE;
allocated = _bfd_malloc_and_read (abfd, rel_hdr->sh_size, rel_hdr->sh_size);
if (allocated == NULL)
goto error_return;
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (allocated, rel_hdr->sh_size, abfd)
!= rel_hdr->sh_size))
goto error_return;
return FALSE;
native_relocs = (bfd_byte *) allocated;

19
bfd/elflink.c
View File

@ -4332,12 +4332,12 @@ error_free_dyn:
Elf_Internal_Shdr *versymhdr = &elf_tdata (abfd)->dynversym_hdr;
bfd_size_type amt = versymhdr->sh_size;
extversym = (Elf_External_Versym *) bfd_malloc (amt);
if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET) != 0)
goto error_free_sym;
extversym = (Elf_External_Versym *)
_bfd_malloc_and_read (abfd, amt, amt);
if (extversym == NULL)
goto error_free_sym;
if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (extversym, amt, abfd) != amt)
goto error_free_vers;
extversym_end = extversym + amt / sizeof (*extversym);
}
}
@ -9737,16 +9737,11 @@ elf_link_check_versioned_symbol (struct bfd_link_info *info,
/* Read in any version definitions. */
versymhdr = &elf_tdata (input)->dynversym_hdr;
extversym = (Elf_External_Versym *) bfd_malloc (versymhdr->sh_size);
if (extversym == NULL)
goto error_ret;
if (bfd_seek (input, versymhdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (extversym, versymhdr->sh_size, input)
!= versymhdr->sh_size))
|| (extversym = (Elf_External_Versym *)
_bfd_malloc_and_read (input, versymhdr->sh_size,
versymhdr->sh_size)) == NULL)
{
free (extversym);
error_ret:
free (isymbuf);
return FALSE;
}

7
bfd/elfxx-mips.c
View File

@ -1424,11 +1424,10 @@ _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section,
bfd_set_error (bfd_error_file_too_big); \
goto error_return; \
} \
debug->ptr = bfd_malloc (amt); \
if (debug->ptr == NULL) \
if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0) \
goto error_return; \
if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0 \
|| bfd_bread (debug->ptr, amt, abfd) != amt) \
debug->ptr = (type) _bfd_malloc_and_read (abfd, amt, amt); \
if (debug->ptr == NULL) \
goto error_return; \
} while (0)

9
bfd/i386lynx.c
View File

@ -411,20 +411,13 @@ doit:
if (!reloc_cache && count != 0)
return FALSE;
relocs = bfd_alloc (abfd, reloc_size);
relocs = _bfd_alloc_and_read (abfd, reloc_size, reloc_size);
if (!relocs && reloc_size != 0)
{
free (reloc_cache);
return FALSE;
}
if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
{
bfd_release (abfd, relocs);
free (reloc_cache);
return FALSE;
}
if (each_size == RELOC_EXT_SIZE)
{
struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;

26
bfd/libbfd-in.h
View File

@ -903,3 +903,29 @@ extern bfd_vma _bfd_safe_read_leb128
#define _bfd_mul_overflow(a, b, res) \
((*res) = (a), (*res) *= (b), (b) != 0 && (*res) / (b) != (a))
#endif
static inline bfd_byte *
_bfd_alloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
{
bfd_byte *mem = bfd_alloc (abfd, asize);
if (mem != NULL)
{
if (bfd_bread (mem, rsize, abfd) == rsize)
return mem;
bfd_release (abfd, mem);
}
return NULL;
}
static inline bfd_byte *
_bfd_malloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
{
bfd_byte *mem = bfd_malloc (asize);
if (mem != NULL)
{
if (bfd_bread (mem, rsize, abfd) == rsize)
return mem;
free (mem);
}
return NULL;
}

26
bfd/libbfd.h
View File

@ -908,6 +908,32 @@ extern bfd_vma _bfd_safe_read_leb128
#define _bfd_mul_overflow(a, b, res) \
((*res) = (a), (*res) *= (b), (b) != 0 && (*res) / (b) != (a))
#endif
static inline bfd_byte *
_bfd_alloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
{
bfd_byte *mem = bfd_alloc (abfd, asize);
if (mem != NULL)
{
if (bfd_bread (mem, rsize, abfd) == rsize)
return mem;
bfd_release (abfd, mem);
}
return NULL;
}
static inline bfd_byte *
_bfd_malloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
{
bfd_byte *mem = bfd_malloc (asize);
if (mem != NULL)
{
if (bfd_bread (mem, rsize, abfd) == rsize)
return mem;
free (mem);
}
return NULL;
}
/* Extracted from libbfd.c. */
bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int);

21
bfd/lynx-core.c
View File

@ -126,25 +126,14 @@ lynx_core_file_p (bfd *abfd)
tcontext_size = pss.threadcnt * sizeof (core_st_t);
/* Allocate space for the thread contexts */
threadp = (core_st_t *) bfd_alloc (abfd, tcontext_size);
/* Save thread contexts */
if (bfd_seek (abfd, pagesize, SEEK_SET) != 0)
goto fail;
threadp = (core_st_t *) _bfd_alloc_and_read (abfd, tcontext_size,
tcontext_size);
if (!threadp)
goto fail;
/* Save thread contexts */
if (bfd_seek (abfd, (file_ptr) pagesize, SEEK_SET) != 0)
goto fail;
if (bfd_bread ((void *) threadp, tcontext_size, abfd) != tcontext_size)
{
/* Probably too small to be a core file */
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
goto fail;
}
core_signal (abfd) = threadp->currsig;
newsect = make_bfd_asection (abfd, ".stack",

46
bfd/mach-o.c
View File

@ -1623,15 +1623,13 @@ bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
if (native_size < count)
goto err;
native_relocs =
(struct mach_o_reloc_info_external *) bfd_malloc (native_size);
if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
return -1;
native_relocs = (struct mach_o_reloc_info_external *)
_bfd_malloc_and_read (abfd, native_size, native_size);
if (native_relocs == NULL)
return -1;
if (bfd_seek (abfd, filepos, SEEK_SET) != 0
|| bfd_bread (native_relocs, native_size, abfd) != native_size)
goto err;
for (i = 0; i < count; i++)
{
if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
@ -3902,19 +3900,13 @@ bfd_mach_o_read_symtab_strtab (bfd *abfd)
/* See PR 21840 for a reproducer. */
if ((sym->strsize + 1) == 0)
return FALSE;
sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
return FALSE;
sym->strtab = (char *) _bfd_alloc_and_read (abfd, sym->strsize + 1,
sym->strsize);
if (sym->strtab == NULL)
return FALSE;
if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
|| bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
{
/* PR 17512: file: 10888-1609-0.004. */
bfd_release (abfd, sym->strtab);
sym->strtab = NULL;
bfd_set_error (bfd_error_file_truncated);
return FALSE;
}
/* Zero terminate the string table. */
sym->strtab[sym->strsize] = 0;
}
@ -4000,15 +3992,9 @@ bfd_mach_o_ppc_flavour_string (unsigned int flavour)
static unsigned char *
bfd_mach_o_alloc_and_read (bfd *abfd, file_ptr filepos, size_t size)
{
unsigned char *buf;
buf = bfd_alloc (abfd, size);
if (buf == NULL)
if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
return NULL;
if (bfd_seek (abfd, filepos, SEEK_SET) != 0
|| bfd_bread (buf, size, abfd) != size)
return NULL;
return buf;
return _bfd_alloc_and_read (abfd, size, size);
}
static bfd_boolean
@ -4100,11 +4086,9 @@ bfd_mach_o_read_prebound_dylib (bfd *abfd,
return FALSE;
str_len = command->len - sizeof (raw);
str = bfd_alloc (abfd, str_len);
str = _bfd_alloc_and_read (abfd, str_len, str_len);
if (str == NULL)
return FALSE;
if (bfd_bread (str, str_len, abfd) != str_len)
return FALSE;
cmd->name_offset = command->offset + nameoff;
cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
@ -4581,8 +4565,8 @@ bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
/* Read rebase content. */
if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
{
cmd->rebase_content =
bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
cmd->rebase_content
= bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
if (cmd->rebase_content == NULL)
return FALSE;
}
@ -4590,8 +4574,8 @@ bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
/* Read bind content. */
if (cmd->bind_content == NULL && cmd->bind_size != 0)
{
cmd->bind_content =
bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
cmd->bind_content
= bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
if (cmd->bind_content == NULL)
return FALSE;
}

26
bfd/pdp11.c
View File

@ -1182,17 +1182,13 @@ aout_get_external_symbols (bfd *abfd)
/* We allocate using malloc to make the values easy to free
later on. If we put them on the objalloc it might not be
possible to free them. */
syms = bfd_malloc (count * EXTERNAL_NLIST_SIZE);
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
return FALSE;
syms = (struct external_nlist *)
_bfd_malloc_and_read (abfd, count * EXTERNAL_NLIST_SIZE,
count * EXTERNAL_NLIST_SIZE);
if (syms == NULL && count != 0)
return FALSE;
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
|| (bfd_bread (syms, exec_hdr (abfd)->a_syms, abfd)
!= exec_hdr (abfd)->a_syms))
{
free (syms);
return FALSE;
}
#endif
obj_aout_external_syms (abfd) = syms;
@ -1829,19 +1825,11 @@ NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
return FALSE;
each_size = obj_reloc_entry_size (abfd);
relocs = bfd_malloc (reloc_size);
relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size);
if (relocs == NULL && reloc_size != 0)
return FALSE;
if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
{
free (relocs);
return FALSE;
}
each_size = obj_reloc_entry_size (abfd);
count = reloc_size / each_size;
/* Count the number of NON-ZERO relocs, this is the count we want. */

42
bfd/pef.c
View File

@ -446,14 +446,15 @@ bfd_pef_print_loader_section (bfd *abfd, FILE *file)
return -1;
loaderlen = loadersec->size;
loaderbuf = bfd_malloc (loaderlen);
if (loaderlen < 56)
return -1;
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) != 0)
return -1;
loaderbuf = _bfd_malloc_and_read (abfd, loaderlen, loaderlen);
if (loaderbuf == NULL)
return -1;
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0
|| bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen
|| loaderlen < 56
|| bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header) < 0)
if (bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header) < 0)
{
free (loaderbuf);
return -1;
@ -479,17 +480,14 @@ bfd_pef_scan_start_address (bfd *abfd)
goto end;
loaderlen = loadersec->size;
loaderbuf = bfd_malloc (loaderlen);
if (loaderbuf == NULL)
goto end;
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0)
goto error;
if (bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen)
goto error;
if (loaderlen < 56)
goto error;
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) != 0)
goto error;
loaderbuf = _bfd_malloc_and_read (abfd, loaderlen, loaderlen);
if (loaderbuf == NULL)
goto error;
ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header);
if (ret < 0)
goto error;
@ -903,26 +901,22 @@ bfd_pef_parse_symbols (bfd *abfd, asymbol **csym)
if (codesec != NULL)
{
codelen = codesec->size;
codebuf = bfd_malloc (codelen);
if (bfd_seek (abfd, codesec->filepos, SEEK_SET) != 0)
goto end;
codebuf = _bfd_malloc_and_read (abfd, codelen, codelen);
if (codebuf == NULL)
goto end;
if (bfd_seek (abfd, codesec->filepos, SEEK_SET) < 0)
goto end;
if (bfd_bread ((void *) codebuf, codelen, abfd) != codelen)
goto end;
}
loadersec = bfd_get_section_by_name (abfd, "loader");
if (loadersec != NULL)
{
loaderlen = loadersec->size;
loaderbuf = bfd_malloc (loaderlen);
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) != 0)
goto end;
loaderbuf = _bfd_malloc_and_read (abfd, loaderlen, loaderlen);
if (loaderbuf == NULL)
goto end;
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0)
goto end;
if (bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen)
goto end;
}
count = 0;

13
bfd/peicode.h
View File

@ -1273,16 +1273,10 @@ pe_ILF_object_p (bfd * abfd)
/* ptr += 2; */
/* Now read in the two strings that follow. */
ptr = (bfd_byte *) bfd_alloc (abfd, size);
ptr = (bfd_byte *) _bfd_alloc_and_read (abfd, size, size);
if (ptr == NULL)
return NULL;
if (bfd_bread (ptr, size, abfd) != size)
{
bfd_release (abfd, ptr);
return NULL;
}
symbol_name = (char *) ptr;
/* See PR 20905 for an example of where the strnlen is necessary. */
source_dll = symbol_name + strnlen (symbol_name, size - 1) + 1;
@ -1494,12 +1488,9 @@ pe_bfd_object_p (bfd * abfd)
if (amt < sizeof (PEAOUTHDR))
amt = sizeof (PEAOUTHDR);
opthdr = bfd_alloc (abfd, amt);
opthdr = _bfd_alloc_and_read (abfd, amt, opt_hdr_size);
if (opthdr == NULL)
return NULL;
if (bfd_bread (opthdr, opt_hdr_size, abfd)
!= (bfd_size_type) opt_hdr_size)
return NULL;
if (amt > opt_hdr_size)
memset (opthdr + opt_hdr_size, 0, amt - opt_hdr_size);

73
bfd/som.c
View File

@ -2088,14 +2088,11 @@ setup_sections (bfd *abfd,
bfd_set_error (bfd_error_no_memory);
goto error_return;
}
space_strings = bfd_malloc (amt + 1);
if (space_strings == NULL)
goto error_return;
if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location,
SEEK_SET) != 0)
goto error_return;
if (bfd_bread (space_strings, amt, abfd) != amt)
space_strings = (char *) _bfd_malloc_and_read (abfd, amt + 1, amt);
if (space_strings == NULL)
goto error_return;
/* Make sure that the string table is NUL terminated. */
space_strings[amt] = 0;
@ -4578,15 +4575,11 @@ som_slurp_string_table (bfd *abfd)
}
/* Allocate and read in the string table. */
amt = obj_som_stringtab_size (abfd);
stringtab = bfd_zmalloc (amt);
if (stringtab == NULL)
return FALSE;
if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0)
return FALSE;
if (bfd_bread (stringtab, amt, abfd) != amt)
amt = obj_som_stringtab_size (abfd);
stringtab = (char *) _bfd_malloc_and_read (abfd, amt, amt);
if (stringtab == NULL)
return FALSE;
/* Save our results and return success. */
@ -4681,12 +4674,11 @@ som_slurp_symbol_table (bfd *abfd)
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
buf = bfd_malloc (amt);
if (buf == NULL)
goto error_return;
if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0)
goto error_return;
if (bfd_bread (buf, amt, abfd) != amt)
buf = (struct som_external_symbol_dictionary_record *)
_bfd_malloc_and_read (abfd, amt, amt);
if (buf == NULL)
goto error_return;
if (_bfd_mul_overflow (symbol_count, sizeof (som_symbol_type), &amt))
@ -5297,17 +5289,13 @@ som_slurp_reloc_table (bfd *abfd,
parsed. We must do so now to know how many relocations exist. */
if (section->reloc_count == (unsigned) -1)
{
amt = fixup_stream_size;
external_relocs = bfd_malloc (amt);
if (external_relocs == NULL)
return FALSE;
/* Read in the external forms. */
if (bfd_seek (abfd,
obj_som_reloc_filepos (abfd) + section->rel_filepos,
SEEK_SET)
!= 0)
if (bfd_seek (abfd, obj_som_reloc_filepos (abfd) + section->rel_filepos,
SEEK_SET) != 0)
return FALSE;
if (bfd_bread (external_relocs, amt, abfd) != amt)
amt = fixup_stream_size;
external_relocs = _bfd_malloc_and_read (abfd, amt, amt);
if (external_relocs == NULL)
return FALSE;
/* Let callers know how many relocations found.
@ -5921,23 +5909,20 @@ som_bfd_count_ar_symbols (bfd *abfd,
lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
/* Read in the hash table. The hash table is an array of 32-bit
file offsets which point to the hash chains. */
if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt))
{
bfd_set_error (bfd_error_file_too_big);
return FALSE;
}
hash_table = bfd_malloc (amt);
hash_table = _bfd_malloc_and_read (abfd, amt, amt);
if (hash_table == NULL && lst_header->hash_size != 0)
goto error_return;
/* Don't forget to initialize the counter! */
*count = 0;
/* Read in the hash table. The hash table is an array of 32-bit
file offsets which point to the hash chains. */
if (bfd_bread ((void *) hash_table, amt, abfd) != amt)
goto error_return;
/* Walk each chain counting the number of symbols found on that particular
chain. */
for (i = 0; i < lst_header->hash_size; i++)
@ -6016,20 +6001,18 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
unsigned int string_loc;
lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
/* Read in the hash table. The has table is an array of 32bit file offsets
which point to the hash chains. */
if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt))
{
bfd_set_error (bfd_error_file_too_big);
return FALSE;
}
hash_table = bfd_malloc (amt);
hash_table = _bfd_malloc_and_read (abfd, amt, amt);
if (hash_table == NULL && lst_header->hash_size != 0)
goto error_return;
/* Read in the hash table. The has table is an array of 32bit file offsets
which point to the hash chains. */
if (bfd_bread ((void *) hash_table, amt, abfd) != amt)
goto error_return;
/* Seek to and read in the SOM dictionary. We will need this to fill
in the carsym's filepos field. */
if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0)
@ -6041,13 +6024,11 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
som_dict = bfd_malloc (amt);
som_dict = (struct som_external_som_entry *)
_bfd_malloc_and_read (abfd, amt, amt);
if (som_dict == NULL && lst_header->module_count != 0)
goto error_return;
if (bfd_bread ((void *) som_dict, amt, abfd) != amt)
goto error_return;
string_loc = lst_header->string_loc;
/* Walk each chain filling in the carsyms as we go along. */
@ -6094,12 +6075,9 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
bfd_set_error (bfd_error_no_memory);
goto error_return;
}
name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
name = (char *) _bfd_alloc_and_read (abfd, len + 1, len);
if (!name)
goto error_return;
if (bfd_bread (name, (bfd_size_type) len, abfd) != len)
goto error_return;
name[len] = 0;
set->name = name;
@ -6148,12 +6126,9 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
bfd_set_error (bfd_error_no_memory);
goto error_return;
}
name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
name = (char *) _bfd_alloc_and_read (abfd, len + 1, len);
if (!name)
goto error_return;
if (bfd_bread (name, (bfd_size_type) len, abfd) != len)
goto error_return;
name[len] = 0;
set->name = name;

16
bfd/vms-alpha.c
View File

@ -4822,10 +4822,10 @@ module_find_nearest_line (bfd *abfd, struct module *module, bfd_vma addr,
{
unsigned int size = module->size;
unsigned int modbeg = PRIV (dst_section)->filepos + module->modbeg;
unsigned char *buffer = (unsigned char *) bfd_malloc (module->size);
unsigned char *buffer;
if (bfd_seek (abfd, modbeg, SEEK_SET) != 0
|| bfd_bread (buffer, size, abfd) != size)
|| (buffer = _bfd_malloc_and_read (abfd, size, size)) == NULL)
{
bfd_set_error (bfd_error_no_debug_section);
return FALSE;
@ -7149,8 +7149,8 @@ evax_bfd_print_dst (struct bfd *abfd, unsigned int dst_size, FILE *file)
dst_size -= len;
off += len;
len -= sizeof (dsth);
buf = bfd_malloc (len);
if (bfd_bread (buf, len, abfd) != len)
buf = _bfd_malloc_and_read (abfd, len, len);
if (buf == NULL)
{
fprintf (file, _("cannot read DST symbol\n"));
return;
@ -8065,14 +8065,12 @@ evax_bfd_print_image (bfd *abfd, FILE *file)
unsigned int codeadroff;
unsigned int lpfixoff;
unsigned int chgprtoff;
file_ptr f_off = (file_ptr) (eiaf_vbn - 1) * VMS_BLOCK_SIZE;
buf = bfd_malloc (eiaf_size);
if (bfd_seek (abfd, (file_ptr) (eiaf_vbn - 1) * VMS_BLOCK_SIZE, SEEK_SET)
|| bfd_bread (buf, eiaf_size, abfd) != eiaf_size)
if (bfd_seek (abfd, f_off, SEEK_SET) != 0
|| (buf = _bfd_malloc_and_read (abfd, eiaf_size, eiaf_size)) == NULL)
{
fprintf (file, _("cannot read EIHA\n"));
free (buf);
return;
}
eiaf = (struct vms_eiaf *)buf;

7
bfd/vms-lib.c
View File

@ -568,14 +568,9 @@ _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind)
!= sizeof (buf_reclen))
goto err;
reclen = bfd_getl32 (buf_reclen);
buf = bfd_malloc (reclen);
buf = _bfd_malloc_and_read (abfd, reclen, reclen);
if (buf == NULL)
goto err;
if (bfd_bread (buf, reclen, abfd) != reclen)
{
free (buf);
goto err;
}
map = (struct vms_dcxmap *)buf;
tdata->nbr_dcxsbm = bfd_getl16 (map->nsubs);
sbm_off = bfd_getl16 (map->sub0);

6
bfd/wasm-module.c
View File

@ -452,12 +452,10 @@ wasm_scan (bfd *abfd)
if (bfdsec->size != 0)
{
bfdsec->contents = bfd_alloc (abfd, bfdsec->size);
bfdsec->contents = _bfd_alloc_and_read (abfd, bfdsec->size,
bfdsec->size);
if (!bfdsec->contents)
goto error_return;
if (bfd_bread (bfdsec->contents, bfdsec->size, abfd) != bfdsec->size)
goto error_return;
}
vma += bfdsec->size;

13
bfd/xcofflink.c
View File

@ -1317,14 +1317,17 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
{
bfd_byte *linenos;
amt = linesz * o->lineno_count;
linenos = bfd_malloc (amt);
if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0)
goto error_return;
if (_bfd_mul_overflow (linesz, o->lineno_count, &amt))
{
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
linenos = _bfd_malloc_and_read (abfd, amt, amt);
if (linenos == NULL)
goto error_return;
reloc_info[o->target_index].linenos = linenos;
if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0
|| bfd_bread (linenos, amt, abfd) != amt)
goto error_return;
}
}

35
bfd/xsym.c
View File

@ -127,24 +127,12 @@ bfd_sym_valid (bfd *abfd)
unsigned char *
bfd_sym_read_name_table (bfd *abfd, bfd_sym_header_block *dshb)
{
unsigned char *rstr;
long ret;
size_t table_size = dshb->dshb_nte.dti_page_count * dshb->dshb_page_size;
size_t table_offset = dshb->dshb_nte.dti_first_page * dshb->dshb_page_size;
rstr = bfd_alloc (abfd, table_size);
if (rstr == NULL)
return rstr;
bfd_seek (abfd, table_offset, SEEK_SET);
ret = bfd_bread (rstr, table_size, abfd);
if (ret < 0 || (unsigned long) ret != table_size)
{
bfd_release (abfd, rstr);
return NULL;
}
return rstr;
if (bfd_seek (abfd, table_offset, SEEK_SET) != 0)
return FALSE;
return _bfd_alloc_and_read (abfd, table_size, table_size);
}
void
@ -1808,24 +1796,13 @@ bfd_sym_print_type_information_table_entry (bfd *abfd,
fprintf (f, "\n ");
buf = malloc (entry->physical_size);
if (buf == NULL)
if (bfd_seek (abfd, entry->offset, SEEK_SET) != 0
|| (buf = _bfd_malloc_and_read (abfd, entry->physical_size,
entry->physical_size)) == NULL)
{
fprintf (f, "[ERROR]\n");
return;
}
if (bfd_seek (abfd, entry->offset, SEEK_SET) < 0)
{
fprintf (f, "[ERROR]\n");
free (buf);
return;
}
if (bfd_bread (buf, entry->physical_size, abfd) != entry->physical_size)
{
fprintf (f, "[ERROR]\n");
free (buf);
return;
}
fprintf (f, "[");
for (i = 0; i < entry->physical_size; i++)