mirror of
https://sourceware.org/git/binutils-gdb.git
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d87bef3a7b
The newer update-copyright.py fixes file encoding too, removing cr/lf on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and embedded cr in binutils/testsuite/binutils-all/ar.exp string match.
709 lines
17 KiB
C
709 lines
17 KiB
C
/* bucomm.c -- Bin Utils COMmon code.
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Copyright (C) 1991-2023 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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/* We might put this in a library someday so it could be dynamically
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loaded, but for now it's not necessary. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libiberty.h"
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#include "filenames.h"
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#include <time.h>
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#include <assert.h>
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#include "bucomm.h"
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/* Error reporting. */
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char *program_name;
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void
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bfd_nonfatal (const char *string)
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{
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const char *errmsg;
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enum bfd_error err = bfd_get_error ();
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if (err == bfd_error_no_error)
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errmsg = _("cause of error unknown");
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else
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errmsg = bfd_errmsg (err);
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fflush (stdout);
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if (string)
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fprintf (stderr, "%s: %s: %s\n", program_name, string, errmsg);
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else
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fprintf (stderr, "%s: %s\n", program_name, errmsg);
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}
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/* Issue a non fatal error message. FILENAME, or if NULL then BFD,
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are used to indicate the problematic file. SECTION, if non NULL,
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is used to provide a section name. If FORMAT is non-null, then it
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is used to print additional information via vfprintf. Finally the
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bfd error message is printed. In summary, error messages are of
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one of the following forms:
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PROGRAM: file: bfd-error-message
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PROGRAM: file[section]: bfd-error-message
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PROGRAM: file: printf-message: bfd-error-message
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PROGRAM: file[section]: printf-message: bfd-error-message. */
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void
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bfd_nonfatal_message (const char *filename,
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const bfd *abfd,
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const asection *section,
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const char *format, ...)
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{
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const char *errmsg;
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const char *section_name;
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enum bfd_error err = bfd_get_error ();
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if (err == bfd_error_no_error)
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errmsg = _("cause of error unknown");
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else
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errmsg = bfd_errmsg (err);
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fflush (stdout);
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section_name = NULL;
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fprintf (stderr, "%s", program_name);
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if (abfd)
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{
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if (!filename)
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filename = bfd_get_archive_filename (abfd);
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if (section)
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section_name = bfd_section_name (section);
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}
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if (section_name)
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fprintf (stderr, ": %s[%s]", filename, section_name);
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else
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fprintf (stderr, ": %s", filename);
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if (format)
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{
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va_list args;
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va_start (args, format);
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fprintf (stderr, ": ");
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vfprintf (stderr, format, args);
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va_end (args);
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}
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fprintf (stderr, ": %s\n", errmsg);
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}
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void
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bfd_fatal (const char *string)
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{
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bfd_nonfatal (string);
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xexit (1);
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}
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void
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report (const char * format, va_list args)
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{
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fflush (stdout);
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fprintf (stderr, "%s: ", program_name);
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vfprintf (stderr, format, args);
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putc ('\n', stderr);
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}
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void
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fatal (const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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report (format, args);
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va_end (args);
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xexit (1);
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}
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void
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non_fatal (const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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report (format, args);
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va_end (args);
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}
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/* Like xmalloc except that ABFD's objalloc memory is returned.
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Use objalloc_free_block to free this memory and all more recently
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allocated, or more usually, leave it to bfd_close to free. */
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void *
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bfd_xalloc (bfd *abfd, size_t size)
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{
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void *ret = bfd_alloc (abfd, size);
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if (ret == NULL)
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bfd_fatal (NULL);
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return ret;
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}
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/* Set the default BFD target based on the configured target. Doing
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this permits the binutils to be configured for a particular target,
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and linked against a shared BFD library which was configured for a
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different target. */
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void
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set_default_bfd_target (void)
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{
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/* The macro TARGET is defined by Makefile. */
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const char *target = TARGET;
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if (! bfd_set_default_target (target))
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fatal (_("can't set BFD default target to `%s': %s"),
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target, bfd_errmsg (bfd_get_error ()));
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}
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/* After a FALSE return from bfd_check_format_matches with
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bfd_get_error () == bfd_error_file_ambiguously_recognized, print
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the possible matching targets and free the list of targets. */
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void
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list_matching_formats (char **matching)
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{
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fflush (stdout);
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fprintf (stderr, _("%s: Matching formats:"), program_name);
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char **p = matching;
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while (*p)
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fprintf (stderr, " %s", *p++);
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free (matching);
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fputc ('\n', stderr);
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}
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/* List the supported targets. */
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void
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list_supported_targets (const char *name, FILE *f)
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{
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int t;
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const char **targ_names;
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if (name == NULL)
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fprintf (f, _("Supported targets:"));
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else
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fprintf (f, _("%s: supported targets:"), name);
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targ_names = bfd_target_list ();
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for (t = 0; targ_names[t] != NULL; t++)
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fprintf (f, " %s", targ_names[t]);
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fprintf (f, "\n");
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free (targ_names);
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}
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/* List the supported architectures. */
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void
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list_supported_architectures (const char *name, FILE *f)
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{
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const char ** arch;
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const char ** arches;
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if (name == NULL)
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fprintf (f, _("Supported architectures:"));
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else
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fprintf (f, _("%s: supported architectures:"), name);
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for (arch = arches = bfd_arch_list (); *arch; arch++)
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fprintf (f, " %s", *arch);
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fprintf (f, "\n");
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free (arches);
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}
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static const char *
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endian_string (enum bfd_endian endian)
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{
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switch (endian)
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{
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case BFD_ENDIAN_BIG: return _("big endian");
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case BFD_ENDIAN_LITTLE: return _("little endian");
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default: return _("endianness unknown");
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}
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}
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/* Data passed to do_display_target and other target iterators. */
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struct display_target {
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/* Temp file. */
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char *filename;
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/* Return status. */
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int error;
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/* Number of targets. */
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int count;
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/* Size of info in bytes. */
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size_t alloc;
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/* Per-target info. */
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struct {
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/* Target name. */
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const char *name;
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/* Non-zero if target/arch combination supported. */
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unsigned char arch[bfd_arch_last - bfd_arch_obscure - 1];
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} *info;
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};
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/* List the targets that BFD is configured to support, each followed
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by its endianness and the architectures it supports. Also build
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info about target/archs. */
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static int
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do_display_target (const bfd_target *targ, void *data)
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{
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struct display_target *param = (struct display_target *) data;
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bfd *abfd;
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size_t amt;
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param->count += 1;
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amt = param->count * sizeof (*param->info);
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if (param->alloc < amt)
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{
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size_t size = ((param->count < 64 ? 64 : param->count)
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* sizeof (*param->info) * 2);
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param->info = xrealloc (param->info, size);
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memset ((char *) param->info + param->alloc, 0, size - param->alloc);
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param->alloc = size;
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}
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param->info[param->count - 1].name = targ->name;
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printf (_("%s\n (header %s, data %s)\n"), targ->name,
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endian_string (targ->header_byteorder),
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endian_string (targ->byteorder));
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abfd = bfd_openw (param->filename, targ->name);
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if (abfd == NULL)
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{
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bfd_nonfatal (param->filename);
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param->error = 1;
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}
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else if (!bfd_set_format (abfd, bfd_object))
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{
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if (bfd_get_error () != bfd_error_invalid_operation)
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{
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bfd_nonfatal (targ->name);
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param->error = 1;
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}
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}
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else
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{
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enum bfd_architecture a;
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for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++)
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if (bfd_set_arch_mach (abfd, a, 0))
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{
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printf (" %s\n", bfd_printable_arch_mach (a, 0));
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param->info[param->count - 1].arch[a - bfd_arch_obscure - 1] = 1;
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}
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}
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if (abfd != NULL)
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bfd_close_all_done (abfd);
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return param->error;
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}
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static void
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display_target_list (struct display_target *arg)
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{
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arg->filename = make_temp_file (NULL);
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arg->error = 0;
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arg->count = 0;
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arg->alloc = 0;
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arg->info = NULL;
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bfd_iterate_over_targets (do_display_target, arg);
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unlink (arg->filename);
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free (arg->filename);
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}
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/* Calculate how many targets we can print across the page. */
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static int
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do_info_size (int targ, int width, const struct display_target *arg)
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{
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while (targ < arg->count)
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{
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width -= strlen (arg->info[targ].name) + 1;
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if (width < 0)
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return targ;
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++targ;
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}
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return targ;
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}
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/* Print header of target names. */
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static void
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do_info_header (int targ, int stop_targ, const struct display_target *arg)
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{
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while (targ != stop_targ)
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printf ("%s ", arg->info[targ++].name);
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}
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/* Print a table row. */
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static void
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do_info_row (int targ, int stop_targ, enum bfd_architecture a,
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const struct display_target *arg)
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{
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while (targ != stop_targ)
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{
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if (arg->info[targ].arch[a - bfd_arch_obscure - 1])
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fputs (arg->info[targ].name, stdout);
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else
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{
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int l = strlen (arg->info[targ].name);
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while (l--)
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putchar ('-');
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}
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++targ;
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if (targ != stop_targ)
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putchar (' ');
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}
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}
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/* Print tables of all the target-architecture combinations that
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BFD has been configured to support. */
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static void
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display_target_tables (const struct display_target *arg)
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{
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const char *columns;
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int width, start_targ, stop_targ;
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enum bfd_architecture arch;
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int longest_arch = 0;
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for (arch = bfd_arch_obscure + 1; arch < bfd_arch_last; arch++)
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{
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const char *s = bfd_printable_arch_mach (arch, 0);
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int len = strlen (s);
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if (len > longest_arch)
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longest_arch = len;
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}
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width = 0;
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columns = getenv ("COLUMNS");
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if (columns != NULL)
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width = atoi (columns);
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if (width == 0)
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width = 80;
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for (start_targ = 0; start_targ < arg->count; start_targ = stop_targ)
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{
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stop_targ = do_info_size (start_targ, width - longest_arch - 1, arg);
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printf ("\n%*s", longest_arch + 1, " ");
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do_info_header (start_targ, stop_targ, arg);
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putchar ('\n');
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for (arch = bfd_arch_obscure + 1; arch < bfd_arch_last; arch++)
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{
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if (strcmp (bfd_printable_arch_mach (arch, 0), "UNKNOWN!") != 0)
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{
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printf ("%*s ", longest_arch,
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bfd_printable_arch_mach (arch, 0));
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do_info_row (start_targ, stop_targ, arch, arg);
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putchar ('\n');
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}
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}
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}
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}
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int
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display_info (void)
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{
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struct display_target arg;
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printf (_("BFD header file version %s\n"), BFD_VERSION_STRING);
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display_target_list (&arg);
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if (!arg.error)
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display_target_tables (&arg);
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return arg.error;
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}
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/* Display the archive header for an element as if it were an ls -l listing:
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Mode User\tGroup\tSize\tDate Name */
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void
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print_arelt_descr (FILE *file, bfd *abfd, bool verbose, bool offsets)
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{
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struct stat buf;
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if (verbose)
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{
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if (bfd_stat_arch_elt (abfd, &buf) == 0)
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{
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char modebuf[11];
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char timebuf[40];
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time_t when = buf.st_mtime;
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const char *ctime_result = (const char *) ctime (&when);
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/* PR binutils/17605: Check for corrupt time values. */
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if (ctime_result == NULL)
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sprintf (timebuf, _("<time data corrupt>"));
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else
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/* POSIX format: skip weekday and seconds from ctime output. */
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sprintf (timebuf, "%.12s %.4s", ctime_result + 4, ctime_result + 20);
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mode_string (buf.st_mode, modebuf);
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modebuf[10] = '\0';
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/* POSIX 1003.2/D11 says to skip first character (entry type). */
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fprintf (file, "%s %ld/%ld %6" PRIu64 " %s ", modebuf + 1,
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(long) buf.st_uid, (long) buf.st_gid,
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(uint64_t) buf.st_size, timebuf);
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}
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}
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fprintf (file, "%s", bfd_get_filename (abfd));
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if (offsets)
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{
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if (bfd_is_thin_archive (abfd) && abfd->proxy_origin)
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fprintf (file, " 0x%lx", (unsigned long) abfd->proxy_origin);
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else if (!bfd_is_thin_archive (abfd) && abfd->origin)
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fprintf (file, " 0x%lx", (unsigned long) abfd->origin);
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}
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fprintf (file, "\n");
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}
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/* Return a path for a new temporary file in the same directory
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as file PATH. */
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static char *
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template_in_dir (const char *path)
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{
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#define template "stXXXXXX"
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const char *slash = strrchr (path, '/');
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char *tmpname;
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size_t len;
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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{
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/* We could have foo/bar\\baz, or foo\\bar, or d:bar. */
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char *bslash = strrchr (path, '\\');
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if (slash == NULL || (bslash != NULL && bslash > slash))
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slash = bslash;
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if (slash == NULL && path[0] != '\0' && path[1] == ':')
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slash = path + 1;
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}
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#endif
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if (slash != (char *) NULL)
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{
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len = slash - path;
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tmpname = (char *) xmalloc (len + sizeof (template) + 2);
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memcpy (tmpname, path, len);
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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/* If tmpname is "X:", appending a slash will make it a root
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directory on drive X, which is NOT the same as the current
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directory on drive X. */
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if (len == 2 && tmpname[1] == ':')
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tmpname[len++] = '.';
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#endif
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tmpname[len++] = '/';
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}
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else
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{
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tmpname = (char *) xmalloc (sizeof (template));
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len = 0;
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}
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memcpy (tmpname + len, template, sizeof (template));
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return tmpname;
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#undef template
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}
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/* Return the name of a created temporary file in the same directory
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as FILENAME. */
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char *
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make_tempname (const char *filename, int *ofd)
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{
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char *tmpname = template_in_dir (filename);
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int fd;
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#ifdef HAVE_MKSTEMP
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||
fd = mkstemp (tmpname);
|
||
#else
|
||
tmpname = mktemp (tmpname);
|
||
if (tmpname == NULL)
|
||
fd = -1;
|
||
else
|
||
fd = open (tmpname, O_RDWR | O_CREAT | O_EXCL, 0600);
|
||
#endif
|
||
if (fd == -1)
|
||
{
|
||
free (tmpname);
|
||
return NULL;
|
||
}
|
||
*ofd = fd;
|
||
return tmpname;
|
||
}
|
||
|
||
/* Return the name of a created temporary directory inside the
|
||
directory containing FILENAME. */
|
||
|
||
char *
|
||
make_tempdir (const char *filename)
|
||
{
|
||
char *tmpname = template_in_dir (filename);
|
||
char *ret;
|
||
|
||
#ifdef HAVE_MKDTEMP
|
||
ret = mkdtemp (tmpname);
|
||
#else
|
||
ret = mktemp (tmpname);
|
||
#if defined (_WIN32) && !defined (__CYGWIN32__)
|
||
if (mkdir (tmpname) != 0)
|
||
ret = NULL;
|
||
#else
|
||
if (mkdir (tmpname, 0700) != 0)
|
||
ret = NULL;
|
||
#endif
|
||
#endif
|
||
if (ret == NULL)
|
||
free (tmpname);
|
||
return ret;
|
||
}
|
||
|
||
/* Parse a string into a VMA, with a fatal error if it can't be
|
||
parsed. */
|
||
|
||
bfd_vma
|
||
parse_vma (const char *s, const char *arg)
|
||
{
|
||
bfd_vma ret;
|
||
const char *end;
|
||
|
||
ret = bfd_scan_vma (s, &end, 0);
|
||
|
||
if (*end != '\0')
|
||
fatal (_("%s: bad number: %s"), arg, s);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Returns the size of the named file. If the file does not
|
||
exist, or if it is not a real file, then a suitable non-fatal
|
||
error message is printed and (off_t) -1 is returned. */
|
||
|
||
off_t
|
||
get_file_size (const char * file_name)
|
||
{
|
||
struct stat statbuf;
|
||
|
||
if (file_name == NULL)
|
||
return (off_t) -1;
|
||
|
||
if (stat (file_name, &statbuf) < 0)
|
||
{
|
||
if (errno == ENOENT)
|
||
non_fatal (_("'%s': No such file"), file_name);
|
||
else
|
||
non_fatal (_("Warning: could not locate '%s'. reason: %s"),
|
||
file_name, strerror (errno));
|
||
}
|
||
else if (S_ISDIR (statbuf.st_mode))
|
||
non_fatal (_("Warning: '%s' is a directory"), file_name);
|
||
else if (! S_ISREG (statbuf.st_mode))
|
||
non_fatal (_("Warning: '%s' is not an ordinary file"), file_name);
|
||
else if (statbuf.st_size < 0)
|
||
non_fatal (_("Warning: '%s' has negative size, probably it is too large"),
|
||
file_name);
|
||
#if defined (_WIN32) && !defined (__CYGWIN__)
|
||
else if (statbuf.st_size == 0)
|
||
{
|
||
/* MS-Windows 'stat' reports the null device as a regular file;
|
||
fix that. */
|
||
int fd = open (file_name, O_RDONLY | O_BINARY);
|
||
if (isatty (fd))
|
||
{
|
||
close (fd);
|
||
non_fatal (_("Warning: '%s' is not an ordinary file"),
|
||
/* libtool wants to see /dev/null in the output. */
|
||
strcasecmp (file_name, "nul") ? file_name : "/dev/null");
|
||
}
|
||
}
|
||
#endif
|
||
else
|
||
return statbuf.st_size;
|
||
|
||
return (off_t) -1;
|
||
}
|
||
|
||
/* Return the filename in a static buffer. */
|
||
|
||
const char *
|
||
bfd_get_archive_filename (const bfd *abfd)
|
||
{
|
||
static size_t curr = 0;
|
||
static char *buf;
|
||
size_t needed;
|
||
|
||
assert (abfd != NULL);
|
||
|
||
if (abfd->my_archive == NULL
|
||
|| bfd_is_thin_archive (abfd->my_archive))
|
||
return bfd_get_filename (abfd);
|
||
|
||
needed = (strlen (bfd_get_filename (abfd->my_archive))
|
||
+ strlen (bfd_get_filename (abfd)) + 3);
|
||
if (needed > curr)
|
||
{
|
||
if (curr)
|
||
free (buf);
|
||
curr = needed + (needed >> 1);
|
||
buf = (char *) xmalloc (curr);
|
||
}
|
||
sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
|
||
bfd_get_filename (abfd));
|
||
return buf;
|
||
}
|
||
|
||
/* Returns TRUE iff PATHNAME, a filename of an archive member,
|
||
is valid for writing. For security reasons absolute paths
|
||
and paths containing /../ are not allowed. See PR 17533. */
|
||
|
||
bool
|
||
is_valid_archive_path (char const * pathname)
|
||
{
|
||
const char * n = pathname;
|
||
|
||
if (IS_ABSOLUTE_PATH (n))
|
||
return false;
|
||
|
||
while (*n)
|
||
{
|
||
if (*n == '.' && *++n == '.' && ( ! *++n || IS_DIR_SEPARATOR (*n)))
|
||
return false;
|
||
|
||
while (*n && ! IS_DIR_SEPARATOR (*n))
|
||
n++;
|
||
while (IS_DIR_SEPARATOR (*n))
|
||
n++;
|
||
}
|
||
|
||
return true;
|
||
}
|