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https://gitlab.freedesktop.org/NetworkManager/NetworkManager
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936e0a51fe
The address sanitizer is not compatible [1] with libraries dynamically opened using RTLD_DEEPBIND: disable the flag when building with asan. [1] https://github.com/google/sanitizers/issues/611
124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but 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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright 2017, 2018 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#define NM_JANSSON_C
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#include "nm-json.h"
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#include <dlfcn.h>
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void *_nm_jansson_json_object_iter_value;
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void *_nm_jansson_json_object_key_to_iter;
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void *_nm_jansson_json_integer;
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void *_nm_jansson_json_object_del;
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void *_nm_jansson_json_array_get;
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void *_nm_jansson_json_array_size;
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void *_nm_jansson_json_array_append_new;
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void *_nm_jansson_json_string;
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void *_nm_jansson_json_object_iter_next;
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void *_nm_jansson_json_loads;
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void *_nm_jansson_json_dumps;
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void *_nm_jansson_json_object_iter_key;
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void *_nm_jansson_json_object;
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void *_nm_jansson_json_object_get;
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void *_nm_jansson_json_array;
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void *_nm_jansson_json_false;
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void *_nm_jansson_json_delete;
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void *_nm_jansson_json_true;
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void *_nm_jansson_json_object_size;
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void *_nm_jansson_json_object_set_new;
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void *_nm_jansson_json_object_iter;
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void *_nm_jansson_json_integer_value;
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void *_nm_jansson_json_string_value;
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#define TRY_BIND_SYMBOL(symbol) \
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G_STMT_START { \
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void *sym = dlsym (handle, #symbol); \
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if (_nm_jansson_ ## symbol && sym != _nm_jansson_ ## symbol) \
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return FALSE; \
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_nm_jansson_ ## symbol = sym; \
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} G_STMT_END
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static gboolean
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bind_symbols (void *handle)
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{
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TRY_BIND_SYMBOL (json_object_iter_value);
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TRY_BIND_SYMBOL (json_object_key_to_iter);
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TRY_BIND_SYMBOL (json_integer);
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TRY_BIND_SYMBOL (json_object_del);
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TRY_BIND_SYMBOL (json_array_get);
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TRY_BIND_SYMBOL (json_array_size);
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TRY_BIND_SYMBOL (json_array_append_new);
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TRY_BIND_SYMBOL (json_string);
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TRY_BIND_SYMBOL (json_object_iter_next);
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TRY_BIND_SYMBOL (json_loads);
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TRY_BIND_SYMBOL (json_dumps);
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TRY_BIND_SYMBOL (json_object_iter_key);
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TRY_BIND_SYMBOL (json_object);
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TRY_BIND_SYMBOL (json_object_get);
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TRY_BIND_SYMBOL (json_array);
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TRY_BIND_SYMBOL (json_false);
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TRY_BIND_SYMBOL (json_delete);
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TRY_BIND_SYMBOL (json_true);
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TRY_BIND_SYMBOL (json_object_size);
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TRY_BIND_SYMBOL (json_object_set_new);
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TRY_BIND_SYMBOL (json_object_iter);
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TRY_BIND_SYMBOL (json_integer_value);
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TRY_BIND_SYMBOL (json_string_value);
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return TRUE;
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}
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gboolean
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nm_jansson_load (void)
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{
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static enum {
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UNKNOWN,
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AVAILABLE,
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MISSING,
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} state = UNKNOWN;
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void *handle;
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int mode;
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if (G_LIKELY (state != UNKNOWN))
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goto out;
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/* First just resolve the symbols to see if there's a conflict already. */
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if (!bind_symbols (RTLD_DEFAULT))
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goto out;
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mode = RTLD_LAZY | RTLD_LOCAL | RTLD_NODELETE | RTLD_DEEPBIND;
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#if defined (ASAN_BUILD)
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/* Address sanitizer is incompatible with RTLD_DEEPBIND. */
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mode &= ~RTLD_DEEPBIND;
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#endif
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handle = dlopen (JANSSON_SONAME, mode);
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if (!handle)
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goto out;
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/* Now do the actual binding. */
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if (!bind_symbols (handle))
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goto out;
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state = AVAILABLE;
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out:
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return state == AVAILABLE;
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}
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