mirror of
https://github.com/openharmony/third_party_elfutils.git
synced 2026-07-20 23:45:11 -04:00
Josh Stone
3425454a10
AC_SYS_LARGEFILE defines _FILE_OFFSET_BITS in config.h if needed for LFS, and this automatically maps things like open to open64. But quite a few places used explicit 64-bit names, which won't work on platforms like FreeBSD where off_t is always 64-bit and there are no foo64 names. It's better to just trust that AC_SYS_LARGEFILE is doing it correctly. But we can verify this too, as some file could easily forget to include config.h. The new tests/run-lfs-symbols.sh checks all build targets against lfs-symbols (taken from lintian) to make sure everything was implicitly mapped to 64-bit variants when _FILE_OFFSET_BITS is set. Signed-off-by: Josh Stone <jistone@redhat.com>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/* Copyright (C) 2011 Red Hat, Inc.
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This file is part of elfutils.
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Written by Marek Polacek <mpolacek@redhat.com>, 2011.
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This file 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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elfutils is distributed in the hope that it will be useful, but
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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, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include ELFUTILS_HEADER(dwfl)
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#include <assert.h>
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#include <dwarf.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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int
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main (int argc, char *argv[])
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{
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int cnt;
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for (cnt = 1; cnt < argc; ++cnt)
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{
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Dwarf_Off offset = 0;
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size_t len;
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int fd = open (argv[cnt], O_RDONLY);
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if (fd == -1)
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{
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printf ("cannot open '%s': %m\n", argv[cnt]);
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return 1;
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}
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Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
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if (dbg == NULL)
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{
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printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1));
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close (fd);
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return 1;
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}
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/* Try to use NULL Dwarf object. */
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const char *str = dwarf_getstring (NULL, offset, &len);
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assert (str == NULL);
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/* Use insane offset. */
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str = dwarf_getstring (dbg, ~0UL, &len);
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assert (str == NULL);
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/* Now do some real work. */
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for (int i = 0; i < 100; ++i)
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{
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str = dwarf_getstring (dbg, offset, &len);
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puts (str);
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/* Advance. */
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offset += len + 1;
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}
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close (fd);
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}
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return 0;
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}
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