glibc/sysdeps/nacl/nacl_interface_ext_supply.c

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/* Interface for the user to replace NaCl IRT interface functions.
Copyright (C) 2015-2016 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/>. */
#include <nacl-interfaces.h>
#include <string.h>
size_t
nacl_interface_ext_supply (const char *interface_ident,
const void *table, size_t tablesize)
{
const size_t ident_len = strlen (interface_ident) + 1;
/* Most interfaces are in rtld, so try there first. If other
libraries ever get their own tables not used in libc, then we
will need some dynamic registration mechanism here to iterate
over all libraries' __nacl_supply_interface_libfoo calls. */
if (0
#ifdef SHARED
|| __nacl_supply_interface_rtld (interface_ident, ident_len,
table, tablesize)
#endif
|| __nacl_supply_interface_libc (interface_ident, ident_len,
table, tablesize))
return tablesize;
return 0;
}