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d78efd9f36
* elf/Makefile (tests): Add it. ($(objpfx)tst-tls-dlinfo): Depend on $(libdl). ($(objpfx)tst-tls-dlinfo.out): Depend on $(objpfx)tst-tlsmod2.so. * dlfcn/dlfcn.h (RTLD_DI_PROFILENAME, RTLD_DI_PROFILEOUT): New enum values, reserve unsupported requested names used on Solaris. (RTLD_DI_TLS_MODID, RTLD_DI_TLS_DATA): New enum values. (RTLD_DI_MAX): Likewise. * dlfcn/dlinfo.c (dlinfo_doit): Handle RTLD_DI_TLS_MODID and RTLD_DI_TLS_DATA. * elf/dl-tls.c (_dl_tls_get_addr_soft): New function. * sysdeps/generic/ldsodefs.h: Declare it. * elf/Versions (ld: GLIBC_PRIVATE): Add it. * elf/link.h (struct dl_phdr_info): New members dlpi_tls_modid, dlpi_tls_data. * elf/dl-iteratephdr.c (__dl_iterate_phdr): Fill them in. * include/link.h: Don't copy contents from elf/link.h. Instead, #include it while #define'ing around link_map. * elf/dl-debug.c (_dl_debug_initialize): Add a cast. Add bogus extern decl to verify link_map members. * elf/loadtest.c (MAPS): New macro, cast _r_debug._r_map. (OUT, main): Use it in place of _r_debug._r_map. * elf/unload.c: Likewise. * elf/unload2.c: Likewise. * elf/neededtest.c (check_loaded_objects): Likewise. * elf/neededtest2.c (check_loaded_objects): Likewise. * elf/neededtest3.c (check_loaded_objects): Likewise. * elf/neededtest4.c (check_loaded_objects): Likewise. * elf/circleload1.c (check_loaded_objects): Likewise.
135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
/* dlinfo -- Get information from the dynamic linker.
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Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <dlfcn.h>
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#include <link.h>
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#include <ldsodefs.h>
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#include <libintl.h>
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#if !defined SHARED && defined IS_IN_libdl
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int
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dlinfo (void *handle, int request, void *arg)
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{
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return __dlinfo (handle, request, arg, RETURN_ADDRESS (0));
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}
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#else
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# ifdef USE_TLS
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# include <dl-tls.h>
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# endif
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struct dlinfo_args
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{
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ElfW(Addr) caller;
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void *handle;
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int request;
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void *arg;
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};
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static void
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dlinfo_doit (void *argsblock)
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{
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struct dlinfo_args *const args = argsblock;
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struct link_map *l = args->handle;
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# if 0
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if (args->handle == RTLD_SELF)
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{
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Lmid_t nsid;
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/* Find the highest-addressed object that CALLER is not below. */
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for (nsid = 0; nsid < DL_NNS; ++nsid)
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for (l = GL(dl_ns)[nsid]._ns_loaded; l != NULL; l = l->l_next)
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if (caller >= l->l_map_start && caller < l->l_map_end)
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/* There must be exactly one DSO for the range of the virtual
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memory. Otherwise something is really broken. */
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break;
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if (l == NULL)
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GLRO(dl_signal_error) (0, NULL, NULL, N_("\
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RTLD_SELF used in code not dynamically loaded"));
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}
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# endif
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switch (args->request)
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{
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case RTLD_DI_CONFIGADDR:
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default:
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GLRO(dl_signal_error) (0, NULL, NULL, N_("unsupported dlinfo request"));
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break;
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case RTLD_DI_LMID:
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*(Lmid_t *) args->arg = l->l_ns;
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break;
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case RTLD_DI_LINKMAP:
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*(struct link_map **) args->arg = l;
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break;
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case RTLD_DI_SERINFO:
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_dl_rtld_di_serinfo (l, args->arg, false);
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break;
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case RTLD_DI_SERINFOSIZE:
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_dl_rtld_di_serinfo (l, args->arg, true);
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break;
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case RTLD_DI_ORIGIN:
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strcpy (args->arg, l->l_origin);
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break;
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case RTLD_DI_TLS_MODID:
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*(size_t *) args->arg = 0;
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#ifdef USE_TLS
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*(size_t *) args->arg = l->l_tls_modid;
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#endif
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break;
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case RTLD_DI_TLS_DATA:
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{
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void *data = NULL;
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#ifdef USE_TLS
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if (l->l_tls_modid != 0)
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data = _dl_tls_get_addr_soft (l);
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#endif
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*(void **) args->arg = data;
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break;
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}
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}
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}
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int
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__dlinfo (void *handle, int request, void *arg DL_CALLER_DECL)
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{
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# ifdef SHARED
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if (__builtin_expect (_dlfcn_hook != NULL, 0))
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return _dlfcn_hook->dlinfo (handle, request, arg,
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DL_CALLER);
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# endif
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struct dlinfo_args args = { (ElfW(Addr)) DL_CALLER,
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handle, request, arg };
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return _dlerror_run (&dlinfo_doit, &args) ? -1 : 0;
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}
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# ifdef SHARED
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strong_alias (__dlinfo, dlinfo)
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# endif
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#endif
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