/* objcopy.c -- copy object file from input to output, optionally massaging it.
- Copyright 1991-2013 Free Software Foundation, Inc.
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
This file is part of GNU Binutils.
/* List of sections to add to the output BFD. */
static struct section_add *add_sections;
+/* List of sections to update in the output BFD. */
+static struct section_add *update_sections;
+
+/* List of sections to dump from the output BFD. */
+static struct section_add *dump_sections;
+
/* If non-NULL the argument to --add-gnu-debuglink.
This should be the filename to store in the .gnu_debuglink section. */
static const char * gnu_debuglink_filename = NULL;
/* Whether to compress/decompress DWARF debug sections. */
static enum
{
- nothing,
- compress,
- decompress
+ nothing = 0,
+ compress = 1 << 0,
+ compress_zlib = compress | 1 << 1,
+ compress_gnu_zlib = compress | 1 << 2,
+ compress_gabi_zlib = compress | 1 << 3,
+ decompress = 1 << 4
} do_debug_sections = nothing;
/* Whether to change the leading character in symbol names. */
enum command_line_switch
{
OPTION_ADD_SECTION=150,
+ OPTION_UPDATE_SECTION,
+ OPTION_DUMP_SECTION,
OPTION_CHANGE_ADDRESSES,
OPTION_CHANGE_LEADING_CHAR,
OPTION_CHANGE_START,
{
{"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK},
{"add-section", required_argument, 0, OPTION_ADD_SECTION},
+ {"update-section", required_argument, 0, OPTION_UPDATE_SECTION},
{"adjust-start", required_argument, 0, OPTION_CHANGE_START},
{"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES},
{"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
{"change-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_VMA},
{"change-start", required_argument, 0, OPTION_CHANGE_START},
{"change-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
- {"compress-debug-sections", no_argument, 0, OPTION_COMPRESS_DEBUG_SECTIONS},
+ {"compress-debug-sections", optional_argument, 0, OPTION_COMPRESS_DEBUG_SECTIONS},
{"debugging", no_argument, 0, OPTION_DEBUGGING},
{"decompress-debug-sections", no_argument, 0, OPTION_DECOMPRESS_DEBUG_SECTIONS},
{"disable-deterministic-archives", no_argument, 0, 'U'},
{"discard-all", no_argument, 0, 'x'},
{"discard-locals", no_argument, 0, 'X'},
+ {"dump-section", required_argument, 0, OPTION_DUMP_SECTION},
{"enable-deterministic-archives", no_argument, 0, 'D'},
{"extract-dwo", no_argument, 0, OPTION_EXTRACT_DWO},
{"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL},
-w --wildcard Permit wildcard in symbol comparison\n\
-x --discard-all Remove all non-global symbols\n\
-X --discard-locals Remove any compiler-generated symbols\n\
- -i --interleave [<number>] Only copy N out of every <number> bytes\n\
+ -i --interleave[=<number>] Only copy N out of every <number> bytes\n\
--interleave-width <number> Set N for --interleave\n\
-b --byte <num> Select byte <num> in every interleaved block\n\
--gap-fill <val> Fill gaps between sections with <val>\n\
--set-section-flags <name>=<flags>\n\
Set section <name>'s properties to <flags>\n\
--add-section <name>=<file> Add section <name> found in <file> to output\n\
+ --update-section <name>=<file>\n\
+ Update contents of section <name> with\n\
+ contents found in <file>\n\
+ --dump-section <name>=<file> Dump the contents of section <name> into <file>\n\
--rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\
--long-section-names {enable|disable|keep}\n\
Handle long section names in Coff objects.\n\
<commit>\n\
--subsystem <name>[:<version>]\n\
Set PE subsystem to <name> [& <version>]\n\
- --compress-debug-sections Compress DWARF debug sections using zlib\n\
+ --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\
+ Compress DWARF debug sections using zlib\n\
--decompress-debug-sections Decompress DWARF debug sections using zlib\n\
-v --verbose List all object files modified\n\
@<file> Read options from <file>\n\
-U --disable-deterministic-archives\n\
Disable -D behavior (default)\n"));
fprintf (stream, _("\
- -R --remove-section=<name> Remove section <name> from the output\n\
+ -R --remove-section=<name> Also remove section <name> from the output\n\
-s --strip-all Remove all symbol and relocation information\n\
-g -S -d --strip-debug Remove all debugging symbols & sections\n\
--strip-dwo Remove all DWO sections\n\
We need to be careful in how we match section names because of the support
for wildcard characters. For example suppose that the user has invoked
objcopy like this:
-
+
--set-section-flags .debug_*=debug
--set-section-flags .debug_str=readonly,debug
--change-section-address .debug_*ranges=0x1000
struct section_list *p;
/* assert ((context & ((1 << 7) - 1)) != 0); */
-
+
for (p = change_sections; p != NULL; p = p->next)
{
if (add)
if (! fnmatch (slot_name, d->name, 0))
{
d->found = TRUE;
- /* Stop traversal. */
- return 0;
+ /* Continue traversal, there might be a non-match rule. */
+ return 1;
}
}
else
{
- if (fnmatch (slot_name + 1, d->name, 0))
+ if (! fnmatch (slot_name + 1, d->name, 0))
{
- d->found = TRUE;
+ d->found = FALSE;
/* Stop traversal. */
return 0;
}
return strncmp (name + len - 4, ".dwo", 4) == 0;
}
+/* Return TRUE if section SEC is in the update list. */
+
+static bfd_boolean
+is_update_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+{
+ if (update_sections != NULL)
+ {
+ struct section_add *pupdate;
+
+ for (pupdate = update_sections;
+ pupdate != NULL;
+ pupdate = pupdate->next)
+ {
+ if (strcmp (sec->name, pupdate->name) == 0)
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
/* See if a non-group section is being removed. */
static bfd_boolean
if (p && q)
fatal (_("error: section %s matches both remove and copy options"),
bfd_get_section_name (abfd, sec));
+ if (p && is_update_section (abfd, sec))
+ fatal (_("error: section %s matches both update and remove options"),
+ bfd_get_section_name (abfd, sec));
if (p != NULL)
return TRUE;
return FALSE;
}
+static bfd_boolean
+is_nondebug_keep_contents_section (bfd *ibfd, asection *isection)
+{
+ /* Always keep ELF note sections. */
+ if (ibfd->xvec->flavour == bfd_target_elf_flavour)
+ return (elf_section_type (isection) == SHT_NOTE);
+
+ /* Always keep the .buildid section for PE/COFF.
+
+ Strictly, this should be written "always keep the section storing the debug
+ directory", but that may be the .text section for objects produced by some
+ tools, which it is not sensible to keep. */
+ if (ibfd->xvec->flavour == bfd_target_coff_flavour)
+ return (strcmp (bfd_get_section_name (ibfd, isection), ".buildid") == 0);
+
+ return FALSE;
+}
+
/* Return true if SYM is a hidden symbol. */
static bfd_boolean
if (ibfd->xvec->byteorder != obfd->xvec->byteorder
&& ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
&& obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
- fatal (_("Unable to change endianness of input file(s)"));
+ {
+ /* PR 17636: Call non-fatal so that we return to our parent who
+ may need to tidy temporary files. */
+ non_fatal (_("Unable to change endianness of input file(s)"));
+ return FALSE;
+ }
if (!bfd_set_format (obfd, bfd_get_format (ibfd)))
{
return FALSE;
}
+ if (ibfd->sections == NULL)
+ {
+ non_fatal (_("error: the input file '%s' has no sections"),
+ bfd_get_archive_filename (ibfd));
+ return FALSE;
+ }
+
+ if ((do_debug_sections & compress) != 0
+ && do_debug_sections != compress
+ && ibfd->xvec->flavour != bfd_target_elf_flavour)
+ {
+ non_fatal (_("--compress-debug-sections=[zlib|zlib-gnu|zlib-gabi] is unsupported on `%s'"),
+ bfd_get_archive_filename (ibfd));
+ return FALSE;
+ }
+
if (verbose)
printf (_("copy from `%s' [%s] to `%s' [%s]\n"),
bfd_get_archive_filename (ibfd), bfd_get_target (ibfd),
bfd_nonfatal_message (NULL, ibfd, NULL, NULL);
return FALSE;
}
+ /* PR 17512: file: d6323821
+ If the symbol table could not be loaded do not pretend that we have
+ any symbols. This trips us up later on when we load the relocs. */
+ if (symcount == 0)
+ {
+ free (isympp);
+ osympp = isympp = NULL;
+ }
/* BFD mandates that all output sections be created and sizes set before
any output is done. Thus, we traverse all sections multiple times. */
}
}
+ if (update_sections != NULL)
+ {
+ struct section_add *pupdate;
+
+ for (pupdate = update_sections;
+ pupdate != NULL;
+ pupdate = pupdate->next)
+ {
+ asection *osec;
+
+ pupdate->section = bfd_get_section_by_name (ibfd, pupdate->name);
+ if (pupdate->section == NULL)
+ {
+ non_fatal (_("error: %s not found, can't be updated"), pupdate->name);
+ return FALSE;
+ }
+
+ osec = pupdate->section->output_section;
+ if (! bfd_set_section_size (obfd, osec, pupdate->size))
+ {
+ bfd_nonfatal_message (NULL, obfd, osec, NULL);
+ return FALSE;
+ }
+ }
+ }
+
+ if (dump_sections != NULL)
+ {
+ struct section_add * pdump;
+
+ for (pdump = dump_sections; pdump != NULL; pdump = pdump->next)
+ {
+ asection * sec;
+
+ sec = bfd_get_section_by_name (ibfd, pdump->name);
+ if (sec == NULL)
+ {
+ bfd_nonfatal_message (NULL, ibfd, NULL,
+ _("can't dump section '%s' - it does not exist"),
+ pdump->name);
+ continue;
+ }
+
+ if ((bfd_get_section_flags (ibfd, sec) & SEC_HAS_CONTENTS) == 0)
+ {
+ bfd_nonfatal_message (NULL, ibfd, sec,
+ _("can't dump section - it has no contents"));
+ continue;
+ }
+
+ bfd_size_type size = bfd_get_section_size (sec);
+ if (size == 0)
+ {
+ bfd_nonfatal_message (NULL, ibfd, sec,
+ _("can't dump section - it is empty"));
+ continue;
+ }
+
+ FILE * f;
+ f = fopen (pdump->filename, FOPEN_WB);
+ if (f == NULL)
+ {
+ bfd_nonfatal_message (pdump->filename, NULL, NULL,
+ _("could not open section dump file"));
+ continue;
+ }
+
+ bfd_byte * contents = xmalloc (size);
+ if (bfd_get_section_contents (ibfd, sec, contents, 0, size))
+ {
+ if (fwrite (contents, 1, size, f) != size)
+ {
+ non_fatal (_("error writing section contents to %s (error: %s)"),
+ pdump->filename,
+ strerror (errno));
+ return FALSE;
+ }
+ }
+ else
+ bfd_nonfatal_message (NULL, ibfd, sec,
+ _("could not retrieve section contents"));
+
+ fclose (f);
+ free (contents);
+ }
+ }
+
if (gnu_debuglink_filename != NULL)
{
/* PR 15125: Give a helpful warning message if
}
}
+ if (update_sections != NULL)
+ {
+ struct section_add *pupdate;
+
+ for (pupdate = update_sections;
+ pupdate != NULL;
+ pupdate = pupdate->next)
+ {
+ asection *osec;
+
+ osec = pupdate->section->output_section;
+ if (! bfd_set_section_contents (obfd, osec, pupdate->contents,
+ 0, pupdate->size))
+ {
+ bfd_nonfatal_message (NULL, obfd, osec, NULL);
+ return FALSE;
+ }
+ }
+ }
+
if (gnu_debuglink_filename != NULL)
{
if (! bfd_fill_in_gnu_debuglink_section
{
status = 1;
bfd_nonfatal_message (NULL, obfd, NULL, NULL);
- return;
+ goto cleanup_and_exit;
}
while (!status && this_element != NULL)
bfd_boolean del = TRUE;
bfd_boolean ok_object;
+ /* PR binutils/17533: Do not allow directory traversal
+ outside of the current directory tree by archive members. */
+ if (! is_valid_archive_path (bfd_get_filename (this_element)))
+ {
+ non_fatal (_("illegal pathname found in archive member: %s"),
+ bfd_get_filename (this_element));
+ status = 1;
+ goto cleanup_and_exit;
+ }
+
/* Create an output file for this member. */
output_name = concat (dir, "/",
bfd_get_filename (this_element), (char *) 0);
{
output_name = make_tempdir (output_name);
if (output_name == NULL)
- fatal (_("cannot create tempdir for archive copying (error: %s)"),
- strerror (errno));
+ {
+ non_fatal (_("cannot create tempdir for archive copying (error: %s)"),
+ strerror (errno));
+ status = 1;
+ goto cleanup_and_exit;
+ }
l = (struct name_list *) xmalloc (sizeof (struct name_list));
l->name = output_name;
{
bfd_nonfatal_message (output_name, NULL, NULL, NULL);
status = 1;
- return;
+ goto cleanup_and_exit;
}
if (ok_object)
{
status = 1;
bfd_nonfatal_message (filename, NULL, NULL, NULL);
- return;
}
filename = bfd_get_filename (ibfd);
{
status = 1;
bfd_nonfatal_message (filename, NULL, NULL, NULL);
- return;
}
+ cleanup_and_exit:
/* Delete all the files that we opened. */
for (l = list; l != NULL; l = l->next)
{
unlink (l->name);
}
}
+
rmdir (dir);
}
switch (do_debug_sections)
{
case compress:
+ case compress_zlib:
+ case compress_gnu_zlib:
+ case compress_gabi_zlib:
ibfd->flags |= BFD_COMPRESS;
+ /* Don't check if input is ELF here since this information is
+ only available after bfd_check_format_matches is called. */
+ if (do_debug_sections != compress_gnu_zlib)
+ ibfd->flags |= BFD_COMPRESS_GABI;
break;
case decompress:
ibfd->flags |= BFD_DECOMPRESS;
if (! copy_object (ibfd, obfd, input_arch))
status = 1;
- if (!bfd_close (obfd))
+ /* PR 17512: file: 0f15796a.
+ If the file could not be copied it may not be in a writeable
+ state. So use bfd_close_all_done to avoid the possibility of
+ writing uninitialised data into the file. */
+ if (! (status ? bfd_close_all_done (obfd) : bfd_close (obfd)))
{
status = 1;
bfd_nonfatal_message (output_filename, NULL, NULL, NULL);
flags = p->flags | (flags & (SEC_HAS_CONTENTS | SEC_RELOC));
else if (strip_symbols == STRIP_NONDEBUG
&& (flags & (SEC_ALLOC | SEC_GROUP)) != 0
- && !(ibfd->xvec->flavour == bfd_target_elf_flavour
- && elf_section_type (isection) == SHT_NOTE))
+ && !is_nondebug_keep_contents_section (ibfd, isection))
{
flags &= ~(SEC_HAS_CONTENTS | SEC_LOAD | SEC_GROUP);
if (obfd->xvec->flavour == bfd_target_elf_flavour)
elf_section_type (osection) = SHT_NOBITS;
size = bfd_section_size (ibfd, isection);
+ size = bfd_convert_section_size (ibfd, isection, obfd, size);
if (copy_byte >= 0)
size = (size + interleave - 1) / interleave * copy_width;
else if (extract_symbol)
/* Copy merge entity size. */
osection->entsize = isection->entsize;
+ /* Copy compress status. */
+ osection->compress_status = isection->compress_status;
+
/* This used to be mangle_section; we do here to avoid using
bfd_get_section_by_name since some formats allow multiple
sections with the same name. */
if (is_strip_section (ibfd, isection))
return TRUE;
+ if (is_update_section (ibfd, isection))
+ return TRUE;
+
flags = bfd_get_section_flags (ibfd, isection);
if ((flags & SEC_GROUP) != 0)
return TRUE;
temp_relpp = (arelent **) xmalloc (relsize);
for (i = 0; i < relcount; i++)
- if (is_specified_symbol (bfd_asymbol_name (*relpp[i]->sym_ptr_ptr),
- keep_specific_htab))
- temp_relpp [temp_relcount++] = relpp [i];
+ {
+ /* PR 17512: file: 9e907e0c. */
+ if (relpp[i]->sym_ptr_ptr)
+ if (is_specified_symbol (bfd_asymbol_name (*relpp[i]->sym_ptr_ptr),
+ keep_specific_htab))
+ temp_relpp [temp_relcount++] = relpp [i];
+ }
relcount = temp_relcount;
free (relpp);
relpp = temp_relpp;
return;
osection = isection->output_section;
- size = bfd_get_section_size (isection);
+ /* The output SHF_COMPRESSED section size is different from input if
+ ELF classes of input and output aren't the same. We must use the
+ output section size here, which has been updated in setup_section
+ via bfd_convert_section_size. */
+ size = bfd_get_section_size (osection);
if (bfd_get_section_flags (ibfd, isection) & SEC_HAS_CONTENTS
&& bfd_get_section_flags (obfd, osection) & SEC_HAS_CONTENTS)
{
bfd_byte *memhunk = NULL;
- if (!bfd_get_full_section_contents (ibfd, isection, &memhunk))
+ if (!bfd_get_full_section_contents (ibfd, isection, &memhunk)
+ || !bfd_convert_section_contents (ibfd, isection, obfd,
+ &memhunk))
{
status = 1;
bfd_nonfatal_message (NULL, ibfd, isection, NULL);
int i;
char *output_file = NULL;
- while ((c = getopt_long (argc, argv, "I:O:F:K:N:R:o:sSpdgxXHhVvw",
+ while ((c = getopt_long (argc, argv, "I:O:F:K:N:R:o:sSpdgxXHhVvwDU",
strip_options, (int *) 0)) != EOF)
{
switch (c)
}
}
+/* Allocate and return a pointer to a struct section_add, initializing the
+ structure using ARG, a string in the format "sectionname=filename".
+ The returned structure will have its next pointer set to NEXT. The
+ OPTION field is the name of the command line option currently being
+ parsed, and is only used if an error needs to be reported. */
+
+static struct section_add *
+init_section_add (const char *arg,
+ struct section_add *next,
+ const char *option)
+{
+ struct section_add *pa;
+ const char *s;
+
+ s = strchr (arg, '=');
+ if (s == NULL)
+ fatal (_("bad format for %s"), option);
+
+ pa = (struct section_add *) xmalloc (sizeof (struct section_add));
+ pa->name = xstrndup (arg, s - arg);
+ pa->filename = s + 1;
+ pa->next = next;
+ pa->contents = NULL;
+ pa->size = 0;
+
+ return pa;
+}
+
+/* Load the file specified in PA, allocating memory to hold the file
+ contents, and store a pointer to the allocated memory in the contents
+ field of PA. The size field of PA is also updated. All errors call
+ FATAL. */
+
+static void
+section_add_load_file (struct section_add *pa)
+{
+ size_t off, alloc;
+ FILE *f;
+
+ /* We don't use get_file_size so that we can do
+ --add-section .note.GNU_stack=/dev/null
+ get_file_size doesn't work on /dev/null. */
+
+ f = fopen (pa->filename, FOPEN_RB);
+ if (f == NULL)
+ fatal (_("cannot open: %s: %s"),
+ pa->filename, strerror (errno));
+
+ off = 0;
+ alloc = 4096;
+ pa->contents = (bfd_byte *) xmalloc (alloc);
+ while (!feof (f))
+ {
+ off_t got;
+
+ if (off == alloc)
+ {
+ alloc <<= 1;
+ pa->contents = (bfd_byte *) xrealloc (pa->contents, alloc);
+ }
+
+ got = fread (pa->contents + off, 1, alloc - off, f);
+ if (ferror (f))
+ fatal (_("%s: fread failed"), pa->filename);
+
+ off += got;
+ }
+
+ pa->size = off;
+
+ fclose (f);
+}
+
static int
copy_main (int argc, char *argv[])
{
struct stat statbuf;
const bfd_arch_info_type *input_arch = NULL;
- while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:N:s:O:d:F:L:G:R:SpgxXHhVvW:w",
+ while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:N:s:O:d:F:L:G:R:SpgxXHhVvW:wDU",
copy_options, (int *) 0)) != EOF)
{
switch (c)
break;
case OPTION_ADD_SECTION:
- {
- const char *s;
- size_t off, alloc;
- struct section_add *pa;
- FILE *f;
-
- s = strchr (optarg, '=');
-
- if (s == NULL)
- fatal (_("bad format for %s"), "--add-section");
-
- pa = (struct section_add *) xmalloc (sizeof (struct section_add));
- pa->name = xstrndup (optarg, s - optarg);
- pa->filename = s + 1;
-
- /* We don't use get_file_size so that we can do
- --add-section .note.GNU_stack=/dev/null
- get_file_size doesn't work on /dev/null. */
-
- f = fopen (pa->filename, FOPEN_RB);
- if (f == NULL)
- fatal (_("cannot open: %s: %s"),
- pa->filename, strerror (errno));
-
- off = 0;
- alloc = 4096;
- pa->contents = (bfd_byte *) xmalloc (alloc);
- while (!feof (f))
- {
- off_t got;
-
- if (off == alloc)
- {
- alloc <<= 1;
- pa->contents = (bfd_byte *) xrealloc (pa->contents, alloc);
- }
-
- got = fread (pa->contents + off, 1, alloc - off, f);
- if (ferror (f))
- fatal (_("%s: fread failed"), pa->filename);
-
- off += got;
- }
-
- pa->size = off;
+ add_sections = init_section_add (optarg, add_sections,
+ "--add-section");
+ section_add_load_file (add_sections);
+ break;
- fclose (f);
+ case OPTION_UPDATE_SECTION:
+ update_sections = init_section_add (optarg, update_sections,
+ "--update-section");
+ section_add_load_file (update_sections);
+ break;
- pa->next = add_sections;
- add_sections = pa;
- }
+ case OPTION_DUMP_SECTION:
+ dump_sections = init_section_add (optarg, dump_sections,
+ "--dump-section");
break;
case OPTION_CHANGE_START:
case OPTION_CHANGE_SECTION_VMA:
{
struct section_list * p;
- unsigned int context;
+ unsigned int context = 0;
const char *s;
int len;
char *name;
break;
case OPTION_COMPRESS_DEBUG_SECTIONS:
- do_debug_sections = compress;
+ if (optarg)
+ {
+ if (strcasecmp (optarg, "none") == 0)
+ do_debug_sections = decompress;
+ else if (strcasecmp (optarg, "zlib") == 0)
+ do_debug_sections = compress_zlib;
+ else if (strcasecmp (optarg, "zlib-gnu") == 0)
+ do_debug_sections = compress_gnu_zlib;
+ else if (strcasecmp (optarg, "zlib-gabi") == 0)
+ do_debug_sections = compress_gabi_zlib;
+ else
+ fatal (_("unrecognized --compress-debug-sections type `%s'"),
+ optarg);
+ }
+ else
+ do_debug_sections = compress;
break;
case OPTION_DEBUGGING:
create_symbol_htabs ();
+ if (argv != NULL)
+ bfd_set_error_program_name (argv[0]);
+
if (is_strip)
strip_main (argc, argv);
else