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support: Implement xdlmopen

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Put xdlmopen into its own file, to avoid disturbing static linking
tests (where dlmopen pulls in additional code).
This commit is contained in:
Florian Weimer 2019-02-07 09:02:00 +01:00
parent c2d8f0b704
commit 94b63e6620
4 changed files with 39 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2019-02-07 Florian Weimer <fweimer@redhat.com>
* support/xdlfcn.h (xdlmopen): Declare.
* support/xdlmopen.c: New file.
* support/Makefile (libsupport-routines): Add xdlmopen.
2019-02-06 Joseph Myers <joseph@codesourcery.com>
* elf/dl-load.h (_dl_postprocess_loadcmd): Use __always_inline

1
support/Makefile
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@ -81,6 +81,7 @@ libsupport-routines = \
xconnect \
xcopy_file_range \
xdlfcn \
xdlmopen \
xdup2 \
xfclose \
xfopen \

2
support/xdlfcn.h
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@ -25,10 +25,10 @@ __BEGIN_DECLS
/* Each of these terminates process on failure with relevant error message. */
void *xdlopen (const char *filename, int flags);
void *xdlmopen (Lmid_t lmid, const char *filename, int flags);
void *xdlsym (void *handle, const char *symbol);
void xdlclose (void *handle);
__END_DECLS
#endif /* SUPPORT_DLOPEN_H */

31
support/xdlmopen.c Normal file
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@ -0,0 +1,31 @@
/* dlmopen with error checking.
Copyright (C) 2017-2019 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/>. */
#include <support/check.h>
#include <support/xdlfcn.h>
void *
xdlmopen (Lmid_t lmid, const char *filename, int flags)
{
void *dso = dlmopen (lmid, filename, flags);
if (dso == NULL)
FAIL_EXIT1 ("error: dlmopen: %s\n", dlerror ());
return dso;
}