aboutsummaryrefslogtreecommitdiff
path: root/elf/dl-version.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1997-02-15 04:31:36 +0000
committerUlrich Drepper <drepper@redhat.com>1997-02-15 04:31:36 +0000
commitc84142e8fe3cbcce43ae35ac957a74ac8216d11d (patch)
treeda310b5d0928e6dab9d1195606a4b56376ae747c /elf/dl-version.c
parent7434ccadbb6897d366d2377f84efe1e2cd61b02b (diff)
downloadglibc-c84142e8fe3cbcce43ae35ac957a74ac8216d11d.zip
glibc-c84142e8fe3cbcce43ae35ac957a74ac8216d11d.tar.gz
glibc-c84142e8fe3cbcce43ae35ac957a74ac8216d11d.tar.bz2
1997-02-15 02:41 Miles Bader <miles@gnu.ai.mit.edu> * argp/argp-help.c: Gettextize sources. * argp/argp-parse.c: Likewise. 1997-02-13 22:32 Ulrich Drepper <drepper@cygnus.com> * features.h (__GLIBC_MINOR__): Bump to 1. * xlocale.h: New file. Wrapper around locale/xlocale.h. * Makefile (distribute): Add xlocale.h. * locale/Makefile (routines): Add ctype_l. * locale/ctype-extn.c: Update copyright. De-ANSI-declfy. Add __isblank_l, __toascii_l and __isascii_l. * ctype/ctype.h: Add definitions and declarations for *_l functions. * locale/Makefile (headers): Add xlocale.h. (routines): Add newlocale, duplocale, and freelocale. * locale/localeinfo.h (MAX_USAGE_COUNT): New macro. (struct locale_data): Add new fields mmaped and usage_count. Correct various declarations. * locale/C-collate.c: Define value for new fields mmaped and usage_count. * locale/C-ctype.c: Likewise. * locale/C-messages.c: Likewise. * locale/C-monetary.c: Likewise. * locale/C-numeric.c: Likewise. * locale/C-time.c: Likewise. * locale/loadlocale.c (_nl_load_locale): Initialize mmaped and usage_count fields. * locale/locale.h: Don't define locale_t here (moved to xlocale.h). Correct prototypes for __newlocale and __freelocale. Add prototype for __duplocale. * locale/findlocale.c (copy): Remove function. Use __strdup instead. (_nl_remove_locale): New function. * locale/nl_langinfo.c: Don't declare locale_data objects as const. * locale/setlocale.c: Likewise. * locale/weight.h: Change for use with locale objects. * locale/xlocale.h: New file. Define __locale_t type. * locale/newlocale.c: New file. Create new locale object. * locale/freelocale.c: New file. Destroy locale object. * locale/duplocale.c: New file. Create copy of locale object. * stdlib/Makefile (routines): Add strfmon_l. * stdlib/monetary.h [__USE_GNU]: Declare __strfmon_l. * stdlib/strfmon.c: Add support for use in extended locale model. * stdlib/strfmon_l.c: New file. * string/Makefile (routines): Add strcoll_l and strxfrm_l. * string/strcoll.c: Change for use in extended locale model. * string/strxfrm.c: Likewise. * string/strcoll_l.c: New file. Implement __strcoll_l function. * string/strxfrm_l.c: New file. Implement __strxfrm_l function. * wcsmbs/Makefile (routines): Add wcscoll_l and wcsxfrm_l. * wcsmbs/wchar.h [__USE_GNU]: Declare wcscoll_l and wcsxfrm_l. * wcsmbs/wcscoll.c: Change for use in extended locale model. * wcsmbs/wcscoll_l.c: New file. Implement __wcscoll_l function. * wcsmbs/wcsxfrm_l.c: New file. Implement __wcsxfrm_l function. * wctype/Makefile (routines): Add wcextra, wcfuncs_l, iswctype_l, and towctrans_l. * wctype/cname-lookup.h: Prepare for use in extended locale model. * wctype/iswctype_l.c: New file. Implement character classification functions for use with locale objects. * wctype/wctype.h: Declare functions for use with locale objects. * wctype/towctrans_l.c: New file. Implement __towctrans_l function for use with locale objects. * wctype/wcfuncs_l.c: New file. Implement wide character classification functions for use with locale objects. * wctype/wcextra.c: New file. Implement real functions for non-standard classification functions. * elf/ldd.bash.in: Don't use --data-relocs and --function-relocs parameters to ld.so. Use environment variables. * elf/ldd.sh.in: Likewise. * elf/rtld.c: Remove handling of --data-relocs and --function-relocs options. Instead read environment variables. * elf/link.h (receiver_fct): Add new argument to take error code. * elf/dl-error.c (_dl_signal_error): Call receiver function with another argument. * elf/dl-object.c (_dl_new_object): Create new object with list of names in l_libname member. * elf/dl-load.c (_dl_map_object_from_fd): Add name which was used to find to object to the list in the link_map variable. (_dl_map_object): Use _dl_does_name_match_p to compare with all available names of the object. Optimize handling of LD_LIBRARY_PATH a bit. * elf/rtld.c: Initialize l_libname member of _dl_rtld_map. * elf/dl-lookup.c (_dl_elf_hash): Optimize function. * elf/Makefile (routines): Add dl-version. * elf/link.h (hash_name_pair): New type. Group pointer to string and its hash value. (struct link_map): Change l_libname member to be a list of names, not a single pointer to a name. Add new members l_nversions and l_versions. (_dl_does_name_match_p): New function to test for all names of an object. Add prototypes for new lookup and versioning functions. * elf/dl-lookup.c (do_lookup): Add new argument and handle case when versioned symbol is requested. (_dl_lookup_symbol): Call do_lookup with another argument. (_dl_lookup_symbol_skip): Likewise. (_dl_lookup_versioned_symbol): New function. Handle lookup of versioned symbol. (_dl_lookup_versioned_symbol_skip): Likewise, similar to _dl_lookup_symbol_skip. * elf/dl-reloc.c (RESOLVE): Call _dl_lookup_versioned_symbol or _dl_lookup_symbol depending on availability of version information. * elf/dl-runtime.c (RESOLVE): Likewise. (fixup): Call elf_machine_relplt with additional argument to point to versioning information if available. * elf/do-rel.h (elf_dynamic_do_rel): Likewise. * elf/dl-open.c (_dl_open): Call _dl_check_map_versions to check for correct versions. * elf/dl-version.c: New file. Check library versions and extract version information for easier access. * elf/dlfcn.h [__USE_GNU]: Add prototype for dlvsym. * elf/dlvsym.c: New file. Implementation of function similar to dlsym, but looks for versioned symbol. * elf/elf.h: Add types and macros for versioning. * elf/rtld.c (dl_main): Check availability of needed versions. * sysdeps/alpha/dl-machine.h (elf_machine_rela): Add additional argument for version information. Call RESOLVE with additional argument. * sysdeps/i386/dl-machine.h: Likewise. * sysdeps/m68k/dl-machine.h: Likewise. * sysdeps/mips/dl-machine.h: Likewise. * elf/dlerror.c: Change comment to align with guidelines. * elf/dlopen.c: Likewise. * elf/dlsym.c: Likewise. * locale/programs/localedef.c: Implement --quiet option. * locale/programs/charset.h: Declare be_quiet variable. * locale/programs/locfile.h: Likewise. * locale/programs/charmap.c: Don't print warnings if quiet option was given. * locale/programs/ld-collate.c: Likewise. * locale/programs/ld-ctype.c: Likewise. * locale/programs/ld-messages.c: Likewise. * locale/programs/ld-monetary.c: Likewise. * locale/programs/ld-numeric.c: Likewise. * locale/programs/ld-time.c: Likewise. * locale/programs/locfile.c: Likewise. * Makefile (subdirs): Add argp. * catgets/catgets.c (catopen): Little code improvement. * posix/execl.c: Remove restriction to 1024 arguments. * posix/execle.c: Likewise. * posix/execlp.c: Likewise. * posix/getopt.c [_LIBC]: Define global objects with __ prefix and make regular names weak aliases. * posix/getopt1.c: Likewise. * posix/getopt.h [_LIBC]: Provide prototypes and declarations for __ protected forms. * posix/unistd.h: Add prototype for __sleep. * sysdeps/mach/sleep.c: Make sleep weak alias of __sleep. * sysdeps/posix/sleep.c: Likewise. * sysdeps/stub/sleep.c: Likewise. * sysdeps/unix/sysv/linux/sleep.c: Likewise. * ctype/ctype-info.c: Update copyright. * ctype/ctype.c: Likewise. * ctype/test_ctype.c: Likewise. * dirent/alphasort.c: Likewise. * dirent/list.c: Likewise. * gmon/bb_exit_func.c: Likewise. * grp/fgetgrent.c: Likewise. * grp/getgrent.c: Likewise. * grp/getgrent_r.c: Likewise. * grp/getgrgid.c: Likewise. * grp/getgrgid_r.c: Likewise. * grp/getgrnam.c: Likewise. * grp/getgrnam_r.c: Likewise. * hurd/alloc-fd.c: Likewise. * hurd/catch-exc.c: Likewise. * hurd/ctty-input.c: Likewise. * hurd/ctty-output.c: Likewise. * hurd/dtable.c: Likewise. * hurd/fchroot.c: Likewise. * hurd/fd-close.c: Likewise. * hurd/fd-read.c: Likewise. * hurd/fd-write.c: Likewise. * hurd/fopenport.c: Likewise. * hurd/get-host.c: Likewise. * hurd/getdport.c: Likewise. * hurd/getuids.c: Likewise. * hurd/getumask.c: Likewise. * hurd/hurd-raise.c: Likewise. * hurd/hurd.h: Likewise. * hurd/hurdauth.c: Likewise. * hurd/hurdexec.c: Likewise. * hurd/hurdhost.h: Likewise. * hurd/hurdid.c: Likewise. * hurd/hurdinit.c: Likewise. * hurd/hurdioctl.c: Likewise. * hurd/hurdkill.c: Likewise. * hurd/hurdlookup.c: Likewise. * hurd/hurdmsg.c: Likewise. * hurd/hurdpid.c: Likewise. * hurd/hurdports.c: Likewise. * hurd/hurdprio.c: Likewise. * hurd/hurdrlimit.c: Likewise. * hurd/hurdsock.c: Likewise. * hurd/hurdstartup.c: Likewise. * hurd/hurdstartup.h: Likewise. * hurd/intern-fd.c: Likewise. * hurd/intr-msg.c: Likewise. * hurd/intr-rpc.defs: Likewise. * hurd/intr-rpc.h: Likewise. * hurd/msgportdemux.c: Likewise. * hurd/new-fd.c: Likewise. * hurd/openport.c: Likewise. * hurd/pid2task.c: Likewise. * hurd/port-cleanup.c: Likewise. * hurd/port2fd.c: Likewise. * hurd/ports-get.c: Likewise. * hurd/ports-set.c: Likewise. * hurd/privports.c: Likewise. * hurd/report-wait.c: Likewise. * hurd/set-host.c: Likewise. * hurd/setauth.c: Likewise. * hurd/setuids.c: Likewise. * hurd/siginfo.c: Likewise. * hurd/sigunwind.c: Likewise. * hurd/task2pid.c: Likewise. * hurd/thread-cancel.c: Likewise. * hurd/thread-self.c: Likewise. * hurd/vpprintf.c: Likewise. * hurd/hurd/fd.h: Likewise. * hurd/hurd/id.h: Likewise. * hurd/hurd/ioctl.h: Likewise. * hurd/hurd/lookup.h: Likewise. * hurd/hurd/port.h: Likewise. * hurd/hurd/resource.h: Likewise. * hurd/hurd/threadvar.h: Likewise. * hurd/hurd/userlink.h: Likewise. * inet/ether_aton.c: Likewise. * inet/ether_aton_r.c: Likewise. * inet/ether_ntoa.c: Likewise. * inet/ether_ntoa_r.c: Likewise. * inet/gethstbyad.c: Likewise. * inet/gethstbyad_r.c: Likewise. * inet/gethstent.c: Likewise. * inet/getnetbyad.c: Likewise. * inet/getnetbyad_r.c: Likewise. * inet/getnetbynm.c: Likewise. * inet/getnetbynm_r.c: Likewise. * inet/getnetent.c: Likewise. * inet/getnetent_r.c: Likewise. * inet/getproto.c: Likewise. * inet/getproto_r.c: Likewise. * inet/getprtent.c: Likewise. * inet/getprtent_r.c: Likewise. * inet/getprtname.c: Likewise. * inet/getrpcbyname.c: Likewise. * inet/getrpcbyname_r.c: Likewise. * inet/getrpcbynumber.c: Likewise. * inet/getrpcbynumber_r.c: Likewise. * inet/getrpcent.c: Likewise. * inet/getrpcent_r.c: Likewise. * inet/getservent.c: Likewise. * inet/getservent_r.c: Likewise. * inet/getsrvbynm.c: Likewise. * inet/getsrvbynm_r.c: Likewise. * inet/getsrvbypt.c: Likewise. * inet/getsrvbypt_r.c: Likewise. * inet/herrno.c: Likewise. * inet/netgroup.h: Likewise. * ient/netinet/ether.h: Likewise. * intl/bindtextdom.c: Likewise. * intl/dcgettext.c: Likewise. * intl/dgettext.c: Likewise. * intl/gettext.c: Likewise. * intl/gettext.h: Likewise. * intl/gettextP.h: Likewise. * intl/hash-string.h: Likewise. * intl/loadmsgcat.c: Likewise. * intl/localealias.c: Likewise. * intl/textdomain.c: Likewise. * io/creat.c: Likewise. * io/getdirname.c: Likewise. * io/lockf.c: Likewise. * io/pwd.c: Likewise. * io/test-utime.c: Likewise. * locale/categories.def: Likewise. * locale/codeset_name.c: Likewise. * locale/lc-collate.c: Likewise. * locale/lc-ctype.c: Likewise. * locale/lc-messages.c: Likewise. * locale/lc-monetary.c: Likewise. * locale/lc-numeric.c: Likewise. * locale/lc-time.c: Likewise. * locale/loadlocale.c: Likewise. * locale/localeconv.c: Likewise. * locale/nl_langinfo.c: Likewise. * locale/setlocale.c: Likewise. * locale/strlen-hash.h: Likewise. * locale/programs/charmap-kw.gperf: Likewise. * locale/programs/charmap-kw.h: Likewise. * locale/programs/charset.c: Likewise. * locale/programs/ld-ctype.c: Likewise. * locale/programs/ld-messages.c: Likewise. * locale/programs/ld-monetary.c: Likewise. * locale/programs/linereader.h: Likewise. * locale/programs/locale-spec.c: Likewise. * locale/programs/locales.h: Likewise. * locale/programs/locfile-kw.gperf: Likewise. * locale/programs/locfile-kw.h: Likewise. * locale/programs/locfile-token.h: Likewise. * locale/programs/simple-hash.h: Likewise. * locale/programs/stringtrans.c: Likewise. * locale/programs/stringtrans.h: Likewise. * login/logout.c: Likewise. * mach/bootprivport.c: Likewise. * mach/devstream.c: Likewise. * mach/hello.c: Likewise. * mach/mach.h: Likewise. * mach/mach_init.c: Likewise. * mach/mach_init.h: Likewise. * mach/mig-alloc.c: Likewise. * mach/mig-dealloc.c: Likewise. * mach/mutex-init.c: Likewise. * mach/mutex-solid.c: Likewise. * mach/setup-thread.c: Likewise. * mach/spin-lock.h: Likewise. * mach/spin-solid.c: Likewise. * mach/mach/mig_support.h: Likewise. * md5-crypt/md5-crypt.c: Likewise. * misc/nlist.h: Likewise. * nss/nss_files/files-ether.c: Likewise. * posix/confstr.c: Likewise. * posix/execl.c: Likewise. * posix/execle.c: Likewise. * posix/execlp.c: Likewise. * posix/execv.c: Likewise. * posix/execvp.c: Likewise. * posix/fnmatch.c: Likewise. * posix/getopt.c: Likewise. * posix/getopt.h: Likewise. * posix/getopt1.c: Likewise. * posix/id.c: Likewise. * posix/regex.c: Likewise. * posix/setpgrp.c: Likewise. * posix/unistd.h: Likewise. * posix/wordexp.c: Likewise. * pwd/fgetpwent.c: Likewise. * pwd/getpwent.c: Likewise. * pwd/getpwent_r.c: Likewise. * pwd/getpwnam.c: Likewise. * pwd/getpwnam_r.c: Likewise. * pwd/getpwuid.c: Likewise. * pwd/getpwuid_r.c: Likewise. * pwd/putpwent.c: Likewise. * resolv/gethnamaddr.c: Likewise. * resolv/res_hconf.c: Likewise. * resolv/res_hconf.h: Likewise. * setjmp/longjmp.c: Likewise. * setjmp/sigjmp.c: Likewise. * setjmp/tst-setjmp.c: Likewise. * stdio/clearerr.c: Likewise. * stdio/ferror.c: Likewise. * stdio/fgetc.c: Likewise. * stdio/fgetpos.c: Likewise. * stdio/fgets.c: Likewise. * stdio/fileno.c: Likewise. * stdio/fmemopen.c: Likewise. * stdio/fopen.c: Likewise. * stdio/fopncook.c: Likewise. * stdio/fputc.c: Likewise. * stdio/fputs.c: Likewise. * stdio/fread.c: Likewise. * stdio/freopen.c: Likewise. * stdio/fseek.c: Likewise. * stdio/fsetpos.c: Likewise. * stdio/ftell.c: Likewise. * stdio/fwrite.c: Likewise. * stdio/getchar.c: Likewise. * stdio/getdelim.c: Likewise. * stdio/gets.c: Likewise. * stdio/glue.c: Likewise. * stdio/internals.c: Likewise. * stdio/linewrap.c: Likewise. * stdio/linewrap.h: Likewise. * stdio/memstream.c: Likewise. * stdio/newstream.c: Likewise. * stdio/putchar.c: Likewise. * stdio/puts.c: Likewise. * stdio/rewind.c: Likewise. * stdio/setbuf.c: Likewise. * stdio/setbuffer.c: Likewise. * stdio/setlinebuf.c: Likewise. * stdio/setvbuf.c: Likewise. * stdio/ungetc.c: Likewise. * stdio/vasprintf.c: Likewise. * stdio/vscanf.c: Likewise. * stdio/vsnprintf.c: Likewise. * stdio/vsprintf.c: Likewise. * stdio/vsscanf.c: Likewise. * stdio-common/asprintf.c: Likewise. * stdio-common/dprintf.c: Likewise. * stdio-common/errnobug.c: Likewise. * stdio-common/fprintf.c: Likewise. * stdio-common/getline.c: Likewise. * stdio-common/getw.c: Likewise. * stdio-common/perror.c: Likewise. * stdio-common/psignal.c: Likewise. * stdio-common/putw.c: Likewise. * stdio-common/reg-printf.c: Likewise. * stdio-common/scanf.c: Likewise. * stdio-common/snprintf.c: Likewise. * stdio-common/sprintf.c: Likewise. * stdio-common/tempnam.c: Likewise. * stdio-common/test_rdwr.c: Likewise. * stdio-common/tst-fileno.c: Likewise. * stdio-common/tst-printf.c: Likewise. * stdio-common/tstgetln.c: Likewise. * stdio-common/vprintf.c: Likewise. * stdlib/drand48.c: Likewise. * stdlib/drand48_r.c: Likewise. * stdlib/erand48.c: Likewise. * stdlib/erand48_r.c: Likewise. * stdlib/exit.h: Likewise. * stdlib/strtoq.c: Likewise. * stdlib/strtoul.c: Likewise. * stdlib/strtouq.c: Likewise. * stdlib/test-canon.c: Likewise. * stdlib/testdiv.c: Likewise. * stdlib/testrand.c: Likewise. * string/argz-append.c: Likewise. * string/argz-count.c: Likewise. * string/argz-create.c: Likewise. * string/argz-ctsep.c: Likewise. * string/argz-delete.c: Likewise. * string/argz-extract.c: Likewise. * string/argz-insert.c: Likewise. * string/argz-next.c: Likewise. * string/argz-stringify.c: Likewise. * string/basename.c: Likewise. * string/envz.c: Likewise. * string/memfrob.c: Likewise. * string/strcoll.c: Likewise. * string/strdup.c: Likewise. * string/string.h: Likewise. * string/strndup.c: Likewise. * string/strnlen.c: Likewise. * string/strsignal.c: Likewise. * string/strxfrm.c: Likewise. * string/test-ffs.c: Likewise. * string/testcopy.c: Likewise. * sysdeps/generic/enbl-secure.c: Likewise. * sysdeps/generic/memcopy.h: Likewise. * sysdeps/generic/stpncpy.c: Likewise. * sysdeps/generic/strcasecmp.c: Likewise. * sysdeps/generic/strcat.c: Likewise. * sysdeps/generic/strchr.c: Likewise. * sysdeps/generic/strcpy.c: Likewise. * sysdeps/generic/strcspn.c: Likewise. * sysdeps/generic/strlen.c: Likewise. * sysdeps/generic/strncase.c: Likewise. * sysdeps/generic/strncat.c: Likewise. * sysdeps/generic/strncpy.c: Likewise. * sysdeps/generic/strpbrk.c: Likewise. * sysdeps/generic/strsep.c: Likewise. * sysdeps/generic/strspn.c: Likewise. * sysdeps/generic/strstr.c: Likewise. * sysdeps/generic/strtok.c: Likewise. * sysdeps/generic/strtok_r.c: Likewise. * sysdeps/mach/sleep.c: Likewise. * sysdeps/posix/sleep.c: Likewise. * sysdeps/stub/sleep.c: Likewise. * time/date.c: Likewise. * time/test_time.c: Likewise. * wcsmbs/wmemcpy.c: Likewise. * wctye/test_wctype.c: Likewise. * wctye/towctrans.c: Likewise. * wctye/wcfuncs.c: Likewise. * wctye/wctrans.c: Likewise. 1997-02-13 22:15 Miles Bader <miles@gnu.ai.mit.edu> * argp/Makefile: New file. * argp/argp.h: Likewise. * argp/argp-ba.c: Likewise. * argp/argp-fmtstream.c: Likewise. * argp/argp-fmtstream.h: Likewise. * argp/argp-fs-xinl.c: Likewise. * argp/argp-help.c: Likewise. * argp/argp-namefrob.h: Likewise. * argp/argp-parse.c: Likewise. * argp/argp-pv.c: Likewise. * argp/argp-pvh.c: Likewise. * argp/argp-test.c: Likewise. * argp/argp-xinl.c: Likewise. * libio/_G_config.h: Make sure wint_t is also defined for old gcc 1997-02-09 04:35 Ulrich Drepper <drepper@cygnus.com> * stdio-common/_itoa.h: Update copyright.
Diffstat (limited to 'elf/dl-version.c')
-rw-r--r--elf/dl-version.c337
1 files changed, 337 insertions, 0 deletions
diff --git a/elf/dl-version.c b/elf/dl-version.c
new file mode 100644
index 0000000..4382a4c
--- /dev/null
+++ b/elf/dl-version.c
@@ -0,0 +1,337 @@
+/* Handle symbol and library versioning.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <elf.h>
+#include <errno.h>
+#include <link.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "../stdio-common/_itoa.h"
+
+
+/* Set in rtld.c at startup. */
+extern char **_dl_argv;
+
+#define VERSTAG(tag) (DT_NUM + DT_PROCNUM + DT_VERSIONTAGIDX (tag))
+
+
+#define make_string(string, rest...) \
+ ({ \
+ const char *all[] = { string, ## rest }; \
+ size_t len, cnt; \
+ char *result, *cp; \
+ \
+ len = 1; \
+ for (cnt = 0; cnt < sizeof (all) / sizeof (all[0]); ++cnt) \
+ len += strlen (all[cnt]); \
+ \
+ cp = result = alloca (len); \
+ for (cnt = 0; cnt < sizeof (all) / sizeof (all[0]); ++cnt) \
+ cp = stpcpy (cp, all[cnt]); \
+ \
+ result; \
+ })
+
+
+static inline struct link_map *
+find_needed (struct link_map *map, const char *name)
+{
+ unsigned int n;
+
+ for (n = 0; n < map->l_nsearchlist; ++n)
+ if (_dl_does_name_match_p (name, map->l_searchlist[n]))
+ return map->l_searchlist[n];
+
+ /* Should never happen. */
+ return NULL;
+}
+
+
+static int
+match_symbol (const char *name, ElfW(Word) hash, const char *string,
+ struct link_map *map, int verbose, int weak)
+{
+ const char *strtab = (const char *) (map->l_addr
+ + map->l_info[DT_STRTAB]->d_un.d_ptr);
+ ElfW(Addr) def_offset = map->l_info[VERSTAG (DT_VERDEF)]->d_un.d_ptr;
+ ElfW(Verdef) *def;
+
+ if (def_offset == 0)
+ {
+ /* The file has no symbol versioning. I.e., the dependent
+ object was linked against another version of this file. We
+ only print a message if verbose output is requested. */
+ if (verbose)
+ _dl_signal_error (0, map->l_name, make_string ("\
+no version information available (required by ",
+ name, ")"));
+ return 0;
+ }
+
+ def = (ElfW(Verdef) *) (map->l_addr + def_offset);
+ while (1)
+ {
+ /* Currently the version number of the definition entry is 1.
+ Make sure all we see is this version. */
+ if (def->vd_version != 1)
+ {
+ char buf[20];
+ buf[sizeof (buf) - 1] = '\0';
+ _dl_signal_error (0, map->l_name,
+ make_string ("unsupported version ",
+ _itoa_word (def->vd_version,
+ &buf[sizeof (buf) - 1],
+ 10, 0),
+ " of Verdef record"));
+ return 1;
+ }
+
+ /* Compare the hash values. */
+ if (hash == def->vd_hash)
+ {
+ ElfW(Verdaux) *aux = (ElfW(Verdaux) *) ((char *) def + def->vd_aux);
+
+ /* To be safe, compare the string as well. */
+ if (strcmp (string, strtab + aux->vda_name) == 0)
+ /* Bingo! */
+ return 0;
+ }
+
+ /* If no more definitions we failed to find what we want. */
+ if (def->vd_next == 0)
+ break;
+
+ /* Next definition. */
+ def = (ElfW(Verdef) *) ((char *) def + def->vd_next);
+ }
+
+ /* Symbol not found. If it was a weak reference it is not fatal. */
+ if (weak)
+ {
+ if (verbose)
+ _dl_signal_error (0, map->l_name,
+ make_string ("weak version `", string,
+ "' not found (required by ", name,
+ ")"));
+ return 0;
+ }
+
+ _dl_signal_error (0, map->l_name,
+ make_string ("version `", string,
+ "' not found (required by ", name, ")"));
+ return 1;
+}
+
+
+int
+_dl_check_map_versions (struct link_map *map, int verbose)
+{
+ int result = 0;
+ const char *strtab = (const char *) (map->l_addr
+ + map->l_info[DT_STRTAB]->d_un.d_ptr);
+ /* Pointer to section with needed versions. */
+ ElfW(Dyn) *dyn = map->l_info[VERSTAG (DT_VERNEED)];
+ /* Pointer to dynamic section with definitions. */
+ ElfW(Dyn) *def = map->l_info[VERSTAG (DT_VERDEF)];
+ /* We need to find out which is the highest version index used
+ in a dependecy. */
+ unsigned int ndx_high = 0;
+
+ if (dyn != NULL)
+ {
+ /* This file requires special versions from its dependencies. */
+ ElfW(Verneed) *ent = (ElfW(Verneed) *) (map->l_addr + dyn->d_un.d_ptr);
+
+ /* Currently the version number of the needed entry is 1.
+ Make sure all we see is this version. */
+ if (ent->vn_version != 1)
+ {
+ char buf[20];
+ buf[sizeof (buf) - 1] = '\0';
+ _dl_signal_error (0, (*map->l_name ? map->l_name : _dl_argv[0]),
+ make_string ("unsupported version ",
+ _itoa_word (ent->vn_version,
+ &buf[sizeof (buf) - 1],
+ 10, 0),
+ " of Verneed record\n"));
+ return 1;
+ }
+
+ while (1)
+ {
+ ElfW(Vernaux) *aux;
+ struct link_map *needed = find_needed (map, strtab + ent->vn_file);
+
+ /* If NEEDED is NULL this means a dependency was not found
+ and no stub entry was created. This should never happen. */
+ assert (needed != NULL);
+
+ /* NEEDED is the map for the file we need. Now look for the
+ dependency symbols. */
+ aux = (ElfW(Vernaux) *) ((char *) ent + ent->vn_aux);
+ while (1)
+ {
+ /* Match the symbol. */
+ result |= match_symbol ((*map->l_name
+ ? map->l_name : _dl_argv[0]),
+ aux->vna_hash,
+ strtab + aux->vna_name,
+ needed, verbose,
+ aux->vna_flags & VER_FLG_WEAK);
+
+ /* Compare the version index. */
+ if ((aux->vna_other & 0x7fff) > ndx_high)
+ ndx_high = aux->vna_other & 0x7fff;
+
+ if (aux->vna_next == 0)
+ /* No more symbols. */
+ break;
+
+ /* Next symbol. */
+ aux = (ElfW(Vernaux) *) ((char *) aux + aux->vna_next);
+ }
+
+ if (ent->vn_next == 0)
+ /* No more dependencies. */
+ break;
+
+ /* Next dependency. */
+ ent = (ElfW(Verneed) *) ((char *) ent + ent->vn_next);
+ }
+ }
+
+ /* We also must store the names of the defined versions. Determine
+ the maximum index here as well.
+
+ XXX We could avoid the loop by just taking the number of definitions
+ as an upper bound of new indeces. */
+ if (def != NULL)
+ {
+ ElfW(Verdef) *ent;
+ ent = (ElfW(Verdef) *) (map->l_addr + def->d_un.d_ptr);
+ while (1)
+ {
+ if ((ent->vd_ndx & 0x7fff) > ndx_high)
+ ndx_high = ent->vd_ndx & 0x7fff;
+
+ if (ent->vd_next == 0)
+ /* No more definitions. */
+ break;
+
+ ent = (ElfW(Verdef) *) ((char *) ent + ent->vd_next);
+ }
+ }
+
+ if (ndx_high > 0)
+ {
+ /* Now we are ready to build the array with the version names
+ which can be indexed by the version index in the VERSYM
+ section. */
+ map->l_versions = (hash_name_pair*) malloc ((ndx_high + 1)
+ * sizeof (hash_name_pair));
+ memset (map->l_versions, '\0', (ndx_high + 1) * sizeof (hash_name_pair));
+ if (map->l_versions == NULL)
+ {
+ _dl_signal_error (ENOMEM, (*map->l_name ? map->l_name : _dl_argv[0]),
+ "cannot allocate version name table");
+ result = 1;
+ }
+ else
+ {
+ /* Store the number of available symbols. */
+ map->l_nversions = ndx_high + 1;
+
+ if (dyn != NULL)
+ {
+ ElfW(Verneed) *ent;
+ ent = (ElfW(Verneed) *) (map->l_addr + dyn->d_un.d_ptr);
+ while (1)
+ {
+ ElfW(Vernaux) *aux;
+ aux = (ElfW(Vernaux) *) ((char *) ent + ent->vn_aux);
+ while (1)
+ {
+ ElfW(Half) ndx = aux->vna_other & 0x7fff;
+ map->l_versions[ndx].hash = aux->vna_hash;
+ map->l_versions[ndx].name = &strtab[aux->vna_name];
+
+ if (aux->vna_next == 0)
+ /* No more symbols. */
+ break;
+
+ /* Advance to next symbol. */
+ aux = (ElfW(Vernaux) *) ((char *) aux + aux->vna_next);
+ }
+
+ if (ent->vn_next == 0)
+ /* No more dependencies. */
+ break;
+
+ /* Advance to next dependency. */
+ ent = (ElfW(Verneed) *) ((char *) ent + ent->vn_next);
+ }
+ }
+
+ /* And insert the defined versions. */
+ if (def != NULL)
+ {
+ ElfW(Verdef) *ent;
+ ent = (ElfW(Verdef) *) (map->l_addr + def->d_un.d_ptr);
+ while (1)
+ {
+ ElfW(Verdaux) *aux;
+ aux = (ElfW(Verdaux) *) ((char *) ent + ent->vd_aux);
+
+ if ((ent->vd_flags & VER_FLG_BASE) == 0)
+ {
+ /* The name of the base version should not be
+ available for matching a versioned symbol. */
+ ElfW(Half) ndx = ent->vd_ndx & 0x7fff;
+ map->l_versions[ndx].hash = ent->vd_hash;
+ map->l_versions[ndx].name = &strtab[aux->vda_name];
+ }
+
+ if (ent->vd_next == 0)
+ /* No more definitions. */
+ break;
+
+ ent = (ElfW(Verdef) *) ((char *) ent + ent->vd_next);
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
+
+int
+_dl_check_all_versions (struct link_map *map, int verbose)
+{
+ struct link_map *l;
+ int result = 0;
+
+ for (l = map; l != NULL; l = l->l_next)
+ result |= _dl_check_map_versions (l, verbose);
+
+ return result;
+}