1 /* Load a shared object at run time.
2 Copyright (C) 1995-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
25 #include <shlib-compat.h>
31 /* The arguments for dlopen_doit. */
34 /* The return value of dlopen_doit. */
36 /* Address of the caller. */
41 dlmopen_doit (void *a)
43 struct dlmopen_args *args = (struct dlmopen_args *) a;
45 /* Non-shared code has no support for multiple namespaces. */
46 if (args->nsid != LM_ID_BASE)
49 /* If trying to open the link map for the main executable the namespace
50 must be the main one. */
51 if (args->file == NULL)
53 _dl_signal_error (EINVAL, NULL, NULL, N_("invalid namespace"));
55 /* It makes no sense to use RTLD_GLOBAL when loading a DSO into
56 a namespace other than the base namespace. */
57 if (__glibc_unlikely (args->mode & RTLD_GLOBAL))
58 _dl_signal_error (EINVAL, NULL, NULL, N_("invalid mode"));
61 args->new = GLRO(dl_open) (args->file ?: "", args->mode | __RTLD_DLOPEN,
63 args->nsid, __libc_argc, __libc_argv, __environ);
67 dlmopen_implementation (Lmid_t nsid, const char *file, int mode,
70 struct dlmopen_args args;
74 args.caller = dl_caller;
76 return _dlerror_run (dlmopen_doit, &args) ? NULL : args.new;
81 ___dlmopen (Lmid_t nsid, const char *file, int mode)
83 if (GLRO (dl_dlfcn_hook) != NULL)
84 return GLRO (dl_dlfcn_hook)->dlmopen (nsid, file, mode, RETURN_ADDRESS (0));
86 return dlmopen_implementation (nsid, file, mode, RETURN_ADDRESS (0));
88 versioned_symbol (libc, ___dlmopen, dlmopen, GLIBC_2_34);
90 # if OTHER_SHLIB_COMPAT (libdl, GLIBC_2_3_4, GLIBC_2_34)
91 compat_symbol (libdl, ___dlmopen, dlmopen, GLIBC_2_3_4);
94 /* Also used with _dlfcn_hook. */
96 __dlmopen (Lmid_t nsid, const char *file, int mode, void *dl_caller)
98 return dlmopen_implementation (nsid, file, mode, RETURN_ADDRESS (0));
102 ___dlmopen (Lmid_t nsid, const char *file, int mode)
104 return __dlmopen (nsid, file, mode, RETURN_ADDRESS (0));
106 weak_alias (___dlmopen, dlmopen)
107 static_link_warning (dlmopen)