[bfd/ChangeLog]
2009-03-11 Chris Demetriou <cgd@google.com>
* bfd.c (BFD_DETERMINISTIC_OUTPUT): New flag.
* bfd-in2.h: Regenerate.
* archive.c (bfd_ar_hdr_from_filesystem): If BFD_DETERMINISTIC_OUTPUT
flag is set, use 0 for uid, gid, and timestamp, and use 0644 for file
mode.
(bsd_write_armap): Likewise.
(_bfd_archive_bsd_update_armap_timestamp): If BFD_DETERMINISTIC_OUTPUT
flag is set, do nothing.
(coff_write_armap): If BFD_DETERMINISTIC_OUTPUT flag is set, use 0
for timestamp.
[binutils/ChangeLog]
2009-03-11 Chris Demetriou <cgd@google.com>
* ar.c (deterministic): New global variable.
(main): Recognize new 'D' option, which enables 'deterministic mode'.
(usage): Document new 'D' option.
(write_archive): Set BFD_DETERMINISTIC_OUTPUT in output archive's
flags if deterministic mode was requested.
* doc/binutils.texi (ar): Document deterministic mode ('D' option).
[binutils/testsuite/ChangeLog]
2009-03-11 Chris Demetriou <cgd@google.com>
* binutils-all/ar.exp (deterministic_archive): New test.
This commit is contained in:
Chris Demetriou
parent
a07dbd482b
commit
36e4dce69d
@ -1,3 +1,16 @@
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2009-03-11 Chris Demetriou <cgd@google.com>
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* bfd.c (BFD_DETERMINISTIC_OUTPUT): New flag.
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* bfd-in2.h: Regenerate.
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* archive.c (bfd_ar_hdr_from_filesystem): If BFD_DETERMINISTIC_OUTPUT
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flag is set, use 0 for uid, gid, and timestamp, and use 0644 for file
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mode.
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(bsd_write_armap): Likewise.
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(_bfd_archive_bsd_update_armap_timestamp): If BFD_DETERMINISTIC_OUTPUT
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flag is set, do nothing.
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(coff_write_armap): If BFD_DETERMINISTIC_OUTPUT flag is set, use 0
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for timestamp.
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2009-03-11 Ulrich Weigand <uweigand@de.ibm.com>
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* elf32-spu.c (find_function_stack_adjust): Handle sf instruction
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@ -1652,6 +1652,16 @@ bfd_ar_hdr_from_filesystem (bfd *abfd, const char *filename, bfd *member)
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return NULL;
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}
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/* If the caller requested that the BFD generate deterministic output,
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fake values for modification time, UID, GID, and file mode. */
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if ((abfd->flags & BFD_DETERMINISTIC_OUTPUT) != 0)
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{
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status.st_mtime = 0;
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status.st_uid = 0;
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status.st_gid = 0;
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status.st_mode = 0644;
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}
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amt = sizeof (struct ar_hdr) + sizeof (struct areltdata);
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ared = bfd_zalloc (abfd, amt);
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if (ared == NULL)
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@ -2220,20 +2230,39 @@ bsd_write_armap (bfd *arch,
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unsigned int count;
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struct ar_hdr hdr;
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struct stat statbuf;
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long uid, gid;
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firstreal = mapsize + elength + sizeof (struct ar_hdr) + SARMAG;
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stat (arch->filename, &statbuf);
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if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0)
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{
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/* Remember the timestamp, to keep it holy. But fudge it a little. */
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bfd_ardata (arch)->armap_timestamp = (statbuf.st_mtime
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+ ARMAP_TIME_OFFSET);
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uid = getuid();
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gid = getgid();
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}
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else
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{
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/* If deterministic, we use 0 as the timestamp in the map.
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Some linkers may require that the archive filesystem modification
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time is less than (or near to) the archive map timestamp. Those
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linkers should not be used with deterministic mode. (GNU ld and
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Gold do not have this restriction.) */
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bfd_ardata (arch)->armap_timestamp = 0;
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uid = 0;
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gid = 0;
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}
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memset (&hdr, ' ', sizeof (struct ar_hdr));
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memcpy (hdr.ar_name, RANLIBMAG, strlen (RANLIBMAG));
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/* Remember the timestamp, to keep it holy. But fudge it a little. */
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bfd_ardata (arch)->armap_timestamp = statbuf.st_mtime + ARMAP_TIME_OFFSET;
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bfd_ardata (arch)->armap_datepos = (SARMAG
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+ offsetof (struct ar_hdr, ar_date[0]));
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_bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
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bfd_ardata (arch)->armap_timestamp);
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_bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", getuid ());
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_bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", getgid ());
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_bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", uid);
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_bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", gid);
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_bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld", mapsize);
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memcpy (hdr.ar_fmag, ARFMAG, 2);
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if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
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@ -2301,6 +2330,10 @@ _bfd_archive_bsd_update_armap_timestamp (bfd *arch)
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struct stat archstat;
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struct ar_hdr hdr;
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/* If creating deterministic archives, just leave the timestamp as-is. */
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if ((arch->flags & BFD_DETERMINISTIC_OUTPUT) != 0)
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return TRUE;
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/* Flush writes, get last-write timestamp from file, and compare it
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to the timestamp IN the file. */
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bfd_flush (arch);
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@ -2385,7 +2418,8 @@ coff_write_armap (bfd *arch,
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_bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld",
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mapsize);
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_bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
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time (NULL));
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((arch->flags & BFD_DETERMINISTIC_OUTPUT) == 0
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? time (NULL) : 0));
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/* This, at least, is what Intel coff sets the values to. */
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_bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
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_bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
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@ -4769,6 +4769,11 @@ struct bfd
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to any input file. */
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#define BFD_LINKER_CREATED 0x2000
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/* This may be set before writing out a BFD to request that it
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be written using values for UIDs, GIDs, timestamps, etc. that
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will be consistent from run to run. */
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#define BFD_DETERMINISTIC_OUTPUT 0x4000
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/* Currently my_archive is tested before adding origin to
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anything. I believe that this can become always an add of
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origin, with origin set to 0 for non archive files. */
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@ -145,6 +145,11 @@ CODE_FRAGMENT
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. to any input file. *}
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.#define BFD_LINKER_CREATED 0x2000
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.
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. {* This may be set before writing out a BFD to request that it
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. be written using values for UIDs, GIDs, timestamps, etc. that
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. will be consistent from run to run. *}
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.#define BFD_DETERMINISTIC_OUTPUT 0x4000
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.
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. {* Currently my_archive is tested before adding origin to
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. anything. I believe that this can become always an add of
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. origin, with origin set to 0 for non archive files. *}
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@ -1,3 +1,12 @@
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2009-03-11 Chris Demetriou <cgd@google.com>
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* ar.c (deterministic): New global variable.
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(main): Recognize new 'D' option, which enables 'deterministic mode'.
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(usage): Document new 'D' option.
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(write_archive): Set BFD_DETERMINISTIC_OUTPUT in output archive's
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flags if deterministic mode was requested.
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* doc/binutils.texi (ar): Document deterministic mode ('D' option).
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2009-03-09 H.J. Lu <hongjiu.lu@intel.com>
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PR binutils/9933
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@ -99,6 +99,11 @@ int newer_only = 0;
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if any of the members are object files. */
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int write_armap = 0;
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/* Operate in deterministic mode: write zero for timestamps, uids,
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and gids for archive members and the archive symbol table, and write
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consistent file modes. */
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int deterministic = 0;
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/* Nonzero means it's the name of an existing member; position new or moved
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files with respect to this one. */
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char *posname = NULL;
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@ -240,6 +245,7 @@ usage (int help)
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fprintf (s, _(" command specific modifiers:\n"));
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fprintf (s, _(" [a] - put file(s) after [member-name]\n"));
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fprintf (s, _(" [b] - put file(s) before [member-name] (same as [i])\n"));
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fprintf (s, _(" [D] - use zero for timestamps and uids/gids\n"));
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fprintf (s, _(" [N] - use instance [count] of name\n"));
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fprintf (s, _(" [f] - truncate inserted file names\n"));
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fprintf (s, _(" [P] - use full path names when matching\n"));
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@ -572,6 +578,9 @@ main (int argc, char **argv)
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case 'T':
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make_thin_archive = TRUE;
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break;
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case 'D':
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deterministic = TRUE;
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break;
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default:
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/* xgettext:c-format */
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non_fatal (_("illegal option -- %c"), c);
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@ -622,6 +631,9 @@ main (int argc, char **argv)
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if (newer_only && operation != replace)
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fatal (_("`u' is only meaningful with the `r' option."));
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if (newer_only && deterministic)
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fatal (_("`u' is not meaningful with the `D' option."));
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if (postype != pos_default)
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posname = argv[arg_index++];
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@ -972,6 +984,9 @@ write_archive (bfd *iarch)
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obfd->flags |= BFD_TRADITIONAL_FORMAT;
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}
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if (deterministic)
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obfd->flags |= BFD_DETERMINISTIC_OUTPUT;
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if (make_thin_archive || bfd_is_thin_archive (iarch))
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bfd_is_thin_archive (obfd) = 1;
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@ -396,6 +396,15 @@ created if it did not exist, when you request an update. But a warning is
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issued unless you specify in advance that you expect to create it, by
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using this modifier.
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@item D
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@cindex deterministic archives
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Operate in @emph{deterministic} mode. When adding files and the archive
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index use zero for UIDs, GIDs, timestamps, and use consistent file modes
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for all files. When this option is used, if @command{ar} is used with
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identical options and identical input files, multiple runs will create
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identical output files regardless of the input files' owners, groups,
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file modes, or modification times.
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@item f
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Truncate names in the archive. @sc{gnu} @command{ar} will normally permit file
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names of any length. This will cause it to create archives which are
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@ -1,3 +1,7 @@
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2009-03-11 Chris Demetriou <cgd@google.com>
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* binutils-all/ar.exp (deterministic_archive): New test.
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2009-03-09 H.J. Lu <hongjiu.lu@intel.com>
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PR binutils/9933
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@ -354,6 +354,50 @@ proc argument_parsing { } {
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pass $testname
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}
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# Test building a deterministic archive.
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proc deterministic_archive { } {
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global AR
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global AS
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global NM
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global srcdir
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global subdir
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set testname "ar deterministic archive"
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if ![binutils_assemble $srcdir/$subdir/bintest.s tmpdir/bintest.o] {
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unresolved $testname
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return
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}
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if [is_remote host] {
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set archive artest.a
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set objfile [remote_download host tmpdir/bintest.o]
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remote_file host delete $archive
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} else {
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set archive tmpdir/artest.a
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set objfile tmpdir/bintest.o
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}
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remote_file build delete tmpdir/artest.a
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set got [binutils_run $AR "rcD $archive ${objfile}"]
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if ![string match "" $got] {
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fail $testname
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return
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}
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set got [binutils_run $AR "tv $archive"]
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# This only checks the file mode and uid/gid. We can't easily match
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# date because it's printed with the user's timezone.
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if ![string match "rw-r--r-- 0/0 *bintest.o*" $got] {
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fail $testname
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return
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}
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pass $testname
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}
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# Run the tests.
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long_filenames
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@ -361,3 +405,4 @@ symbol_table
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thin_archive
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thin_archive_with_nested
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argument_parsing
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deterministic_archive
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