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| author | Florian Weimer <fweimer@redhat.com> | 2016-11-30 15:59:57 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2016-11-30 15:59:57 +0100 |
| commit | 9e78f6f6e7134a5f299cc8de77370218f8019237 (patch) | |
| tree | 04aa339daf9901b8fc1851353c697528659e7afe /elf/dl-error-minimal.c | |
| parent | 705a79f82560ff6472cebed86aa5db04cdea3bce (diff) | |
| download | glibc-9e78f6f6e7134a5f299cc8de77370218f8019237.zip glibc-9e78f6f6e7134a5f299cc8de77370218f8019237.tar.gz glibc-9e78f6f6e7134a5f299cc8de77370218f8019237.tar.bz2 | |
Implement _dl_catch_error, _dl_signal_error in libc.so [BZ #16628]
This change moves the main implementation of _dl_catch_error,
_dl_signal_error to libc.so, where TLS variables can be used
directly. This removes a writable function pointer from the
rtld_global variable.
For use during initial relocation, minimal implementations of these
functions are provided in ld.so. These are eventually interposed
by the libc.so implementations. This is implemented by compiling
elf/dl-error-skeleton.c twice, via elf/dl-error.c and
elf/dl-error-minimal.c.
As a side effect of this change, the static version of dl-error.c
no longer includes support for the
_dl_signal_cerror/_dl_receive_error mechanism because it is only
used in ld.so.
Diffstat (limited to 'elf/dl-error-minimal.c')
| -rw-r--r-- | elf/dl-error-minimal.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/elf/dl-error-minimal.c b/elf/dl-error-minimal.c new file mode 100644 index 0000000..d535d65 --- /dev/null +++ b/elf/dl-error-minimal.c @@ -0,0 +1,23 @@ +/* Error handling for runtime dynamic linker, minimal version. + Copyright (C) 1995-2016 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/>. */ + +/* This version does lives in ld.so, does not use thread-local data + and supports _dl_signal_cerror and _dl_receive_error. */ + +#define DL_ERROR_BOOTSTRAP 1 +#include "dl-error-skeleton.c" |