_bfd_alloc_and_read

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.

1 files changed, 9 insertions, 12 deletions

diff --git a/bfd/archive.c b/bfd/archive.c
index 91127d7..d2a9a65 100644
--- a/bfd/archive.c
+++ b/bfd/archive.c
@@ -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)