annotate src/unexsol2-6.c @ 5727:86d33ddc7fd6

Avoid EOVERFLOW from stat() calls due to overflowing inode numbers. The btrfs filesystem now uses 64-bit inode numbers even on 32-bit systems. This can lead to spurious stat() failures, where EOVERFLOW is returned because the inode number does not fit into the 32-bit stat structure, even when the caller is not interested in the inode number. This patch builds with _FILE_OFFSET_BITS == 64 when possible, and deals with integers that may be too large to fit into a Lisp fixnum. For more information, see xemacs-patches message <CAHCOHQk_mPM6WgFChBsGafqhuazep6VED7swFoqfFXOV1r8org@mail.gmail.com>.
author Jerry James <james@xemacs.org>
date Wed, 06 Mar 2013 08:32:17 -0700
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1 /* Unexec function for Solaris 2.x
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2 Copyright (C) 1994 Sun Microsystems, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software: you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation, either version 3 of the License, or (at your
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9 option) any later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 /* Synched up with: Not in FSF. */
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20
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21 #include <stdlib.h>
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22 #include <stdio.h>
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23 #include <dlfcn.h>
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24 #include "compiler.h"
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25
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26 int unexec (char *new_name, char *old_name, unsigned int data_start,
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27 unsigned int bss_start, unsigned int entry_address);
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28 int
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29 unexec (char *new_name, char *UNUSED (old_name),
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30 unsigned int UNUSED (data_start), unsigned int UNUSED (bss_start),
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31 unsigned int UNUSED (entry_address))
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32 {
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33 if (dldump (0, new_name, RTLD_MEMORY) != 0)
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34 {
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35 fprintf (stderr, "unexec(): dldump(%s): %s \n",
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36 new_name, dlerror());
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37 exit (1);
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38 }
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39
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40 return 0;
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41 }