glibc/elf/tst-dlopen-tlsmodid-pie.c

/* Test case for BZ #16634.  PIE version.
   Copyright (C) 2014-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#define TST_DLOPEN_TLSMODID_PATH "tst-dlopen-self-pie"
#include "tst-dlopen-tlsmodid.h"
Rename and split elf/tst-dlopen-aout collection of tests From the beginning, elf/tst-dlopen-aout has exercised two different bugs: (a) failure to report errors for a dlopen of the executable itself in some cases (bug 24900) and (b) incorrect rollback of the TLS modid allocation in case of a dlopen failure (bug 16634). This commit replaces the test with elf/tst-dlopen-self for (a) and elf/tst-dlopen-tlsmodid for (b). The latter tests use the elf/tst-dlopen-self binaries (or iconv) with dlopen, so they are no longer self-dlopen tests. Tested on x86_64-linux-gnu and i686-linux-gnu, with a toolchain that does not default to PIE. 2019-10-17 06:51:21 +00:00			`/* Test case for BZ #16634. PIE version.`
Update copyright dates with scripts/update-copyrights 2023-01-06 21:08:04 +00:00			`Copyright (C) 2014-2023 Free Software Foundation, Inc.`
elf: Assign TLS modid later during dlopen [BZ #24930] Commit a42faf59d6d9f82e5293a9ebcc26d9c9e562b12b ("Fix BZ #16634.") attempted to fix a TLS modid consistency issue by adding additional checks to the open_verify function. However, this is fragile because open_verify cannot reliably predict whether _dl_map_object_from_fd will later fail in the more complex cases (such as memory allocation failures). Therefore, this commit assigns the TLS modid as late as possible. At that point, the link map pointer will eventually be passed to _dl_close, which will undo the TLS modid assignment. Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> 2019-10-04 19:23:51 +00:00			`This file is part of the GNU C Library.`

			`The GNU C Library is free software; you can redistribute it and/or`
			`modify it under the terms of the GNU Lesser General Public`
			`License as published by the Free Software Foundation; either`
			`version 2.1 of the License, or (at your option) any later version.`

			`The GNU C Library is distributed in the hope that it will be useful,`
			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
			`Lesser General Public License for more details.`

			`You should have received a copy of the GNU Lesser General Public`
			`License along with the GNU C Library; if not, see`
			`<http://www.gnu.org/licenses/>. */`

Rename and split elf/tst-dlopen-aout collection of tests From the beginning, elf/tst-dlopen-aout has exercised two different bugs: (a) failure to report errors for a dlopen of the executable itself in some cases (bug 24900) and (b) incorrect rollback of the TLS modid allocation in case of a dlopen failure (bug 16634). This commit replaces the test with elf/tst-dlopen-self for (a) and elf/tst-dlopen-tlsmodid for (b). The latter tests use the elf/tst-dlopen-self binaries (or iconv) with dlopen, so they are no longer self-dlopen tests. Tested on x86_64-linux-gnu and i686-linux-gnu, with a toolchain that does not default to PIE. 2019-10-17 06:51:21 +00:00			`#define TST_DLOPEN_TLSMODID_PATH "tst-dlopen-self-pie"`
			`#include "tst-dlopen-tlsmodid.h"`