This commit separates allocating and raising exceptions. This
simplifies catching and re-raising them because it is no longer
necessary to make a temporary, on-stack copy of the exception message.
Resolves: #15465
The program name may be unavailable if the user application tampers
with argc and argv[]. Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2002-02-03 Andreas Schwab <schwab@suse.de>
* sysdeps/posix/readv.c: Use ssize_t for bytes_read.
* sysdeps/posix/writev.c: Use ssize_t for bytes_written. Fix comment.
2002-02-03 Thorsten Kukuk <kukuk@suse.de>
* sysdeps/posix/writev.c: Check for ssize_t overflow, don't use
alloca if the memory reqirements are too high.
2002-02-03 Ulrich Drepper <drepper@redhat.com>
* elf/dl-load.c (decompose_rpath): Avoid using strstr.
* elf/dl-minimal.c (_strerror_r): Use _itoa instead of _itoa_word since
the former is available anyway and speed isn't important here.
* elf/dl-misc.c (_dl_debug_vdprintf): Likewise.
* elf/dl-version.c (match_symbol): Likewise.
(_dl_check_map_versions): Likewise.
* elf/rtld.c (process_envvars): Likewise.
(print_statistics): Likewise.
* sysdeps/generic/dl-sysdep.c (_dl_show_auxv): Likewise.
* elf/dl-minimal.c (_itoa): Always define it. Make it work for all
bases. Add assert to catch uses of unimplemented features.
(__strsep): Add assert to catch uses of unimplemented features.
* elf/dl-object.c (_dl_new_object): Don't use rawmemchr. Use strchr
and avoid inline optimization.
* elf/rtld.c (process_envvars): Likewise.
* elf/dl-open.c: Don't include <stdio-common/_itoa.h>.
* elf/dl-profile.c (_dl_start_profile): Help compiler to avoid ffs.
* elf/rtld.c (dl_main): Avoid strsep inline optimization.
* stdio-common/_itoa.h: Minor simplifications of the code.
* stdio-common/_itoa.c: Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_debug_printf
instead of _dl_printf for debugging info output.
* sysdeps/mips/atomicity.h (exchange_and_add): Use branch likely.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
2000-12-08 Jakub Jelinek <jakub@redhat.com>
* elf/dl-load.c (fillin_rpath): Don't assume there is '\0' at
cp + len. Compute where from dirname.
Reported by <jreiser@BitWagon.com>.
2000-12-08 Richard Henderson <rth@twiddle.net>
* sysdeps/alpha/_mcount.S: Fix typo.
* sysdeps/alpha/strncpy.S: Likewise.
* sysdeps/alpha/alphaev6/Implies: New file.
* sysdeps/alpha/alphaev67/Implies: New file.
* sysdeps/alpha/alphaev67/ffs.S: New file.
* sysdeps/alpha/alphaev67/ffsll.S: New file.
* sysdeps/alpha/alphaev67/rawmemchr.S: New file.
* sysdeps/alpha/alphaev67/stpcpy.S: New file.
* sysdeps/alpha/alphaev67/stpncpy.S: New file.
* sysdeps/alpha/rawmemchr.S: New file.
* sysdeps/alpha/strcat.S: Tail call to __stxcpy.
* sysdeps/alpha/strcpy.S: Likewise.
From GMP 3.1.1:
* sysdeps/alpha/alphaev6/addmul_1.s: New file.
From rick.gorton@alpha-processor.com:
* sysdeps/alpha/alphaev6/memchr.S: New file.
* sysdeps/alpha/alphaev6/memcpy.S: New file.
* sysdeps/alpha/alphaev6/memset.S: New file.
* sysdeps/alpha/alphaev6/stxcpy.S: New file.
* sysdeps/alpha/alphaev6/stxncpy.S: New file.
* sysdeps/alpha/alphaev67/strcat.S: New file.
* sysdeps/alpha/alphaev67/strchr.S: New file.
* sysdeps/alpha/alphaev67/strlen.S: New file.
* sysdeps/alpha/alphaev67/strncat.S: New file.
* sysdeps/alpha/htonl.S: Use a shorter sequence.
2000-12-08 Jakub Jelinek <jakub@redhat.com>
* inet/getnameinfo.c (getnameinfo): Fix NI_NOFQDN support.
Reported by <pspencer@fields.utoronto.ca>.
2000-12-07 Jes Sorensen <jes@linuxcare.com>
* sysdeps/ia64/elf/start.S (__data_start): Add __data_start variable.
Pointed out by Hans Boehm.
2000-12-07 H.J. Lu <hjl@gnu.org>
* elf/dl-version.c (match_symbol): Check map->l_name[0] for printing.
2000-12-07 Andreas Jaeger <aj@suse.de>
* misc/error.c: Add format attributes for __error and __error_at_line.
* nscd/dbg_log.h: Add format attribute.
2000-12-08 Ulrich Drepper <drepper@redhat.com>
* misc/sys/syslog.h: Add format attributes to syslog and vsyslog.
Patch by Joseph S. Myers <jsm28@cam.ac.uk>.
* sysdeps/generic/dl-cache.c (HWCAP_CHECK): Fix access to _dl_hwcap.
* manual/install.texi: Recommend to set LANGUAGE=C LC_ALL=C during
* include/link.h (struct link_map): New bit field l_faked.
* elf/dl-deps.c: Use l_faked field in struct link_map instead of
the magic l_opencount==0.
* elf/dl-load.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/rtld.c: Likewise.
* elf/dl-version.c (_dl_check_map_versions): New argument trace_mode.
Before testing versions check that we actually loaded the object
and whether we are in trace mode. If not loaded during tracing don't
test versions in this object.
(_dl_check_all_versions): Take new parameter and pass to
_dl_check_map_versions.
* sysdeps/generic/ldsodefs.h: Update prototypes for
_dl_check_all_versions and _dl_check_map_versions.
* elf/rtld.c (struct version_check_args): Add dotrace.
(version_check_doit): Pass args->dotrace to _dl_check_all_versions.
(dl_main): Pass info about trace mode to version_check_doit.
* elf/dl-open.c (dl_open_worker): Pass zero as new argument to
_dl_check_all_versions.
* manual/users.texi (XPG Functions): Document utmpxname, getutmp,
and getutmpx.
Patch by Bryan Henderson <bryanh@giraffe-data.com>.
* elf/dynamic-link.h (elf_get_dynamic_info): Take new argument with
load address. Relocate d_ptr in DT_DTRTAB, DT_SYMTAB, DT_RELA, DT_REL,
DT_JMPREL, DT_PLTGOT, and DT_VERSYM l_info entry.
(_ELF_DYNAMIC_DO_RELOC): Take extra argument which specifies whether
rel and rela relocations can both happen and skip one test if this
is not possible.
(ELF_DYNAMIC_DO_RELA, ELF_DYNAMIC_DO_REL): Call _ELF_DYNAMIC_DO_RELOC
appropriately.
* elf/dl-addr.c (_dl_addr): DT_SYMTAB and DT_STRTAB entries are
already relocated.
* elf/dl-deps.c (_dl_map_object_deps): DT_STRTAB entry is already
relocated.
* elf/dl-load.c (_dl_init_paths): DT_STRTAB entry is already relocated.
(_dl_map_object_from_fd): Call elf_get_dynamic_info with new argument.
(_dl_map_object): DT_STRTAB entry is already relocated.
* elf/dl-lookup.c (do_lookup): DT_STRTAB and DT_SYMTAB entries are
already relocated.
* elf/dl-reloc.c (_dl_relocate_object): DT_STRTAB entry is already
relocated.
* elf/dl-runtime.c (fixup): DT_SYMTAB, DT_STRTAB, DT_JMPREL, and
DT_VERSYM entries are already relocated.
(profile_fixup): Likewise.
* elf/dl-version.c: Rename VERSTAG macro into VERSYMIDX. Replace
all users.
(match_symbol): DT_STRTAB entry is already relocated.
(_dl_check_map_versions): Likewise. Also fo DT_VERSYM.
* elf/do-rel.h (elf_dynamic_do_rel): reladdr is now assumed to be
relocated already. DT_SYMTAB and DT_VERSYM entries are also relocated.
* elf/rtld.c (_dl_start): Pass extra argument to elf_get_dynamic_info.
(find_needed): DT_STRTAB entry is already relocated.
(dl_main): Pass extra argument to elf_get_dynamic_info.
DT_STRTAB entry is already relocated.
* sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): DT_JMPREL and
DT_PLTGOT entries are already relocated.
(elf_machine_rela): Likewise for DT_SYMTAB.
* sysdeps/arm/dl-machine.h (elf_machine_rel): DT_STRTAB is already
relocated.
* sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise.
* sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/powerpc/dl-machine.c (__process_machine_rela): Likewise.
* sysdeps/mips/dl-machine.h (elf_machine_got_rel): Likewise.
(elf_machine_got_rel): Likewise for DT_SYMTAB and DT_STRTAB.
* grp/initgroups.c (initgroups): If function in current module was
successful don't stop but continue to process to get all the groups.
1998-03-10 17:54 Ulrich Drepper <drepper@cygnus.com>
* libc.map: Add _dl_debug_message.
* elf/dl-misc.c: Make _dl_debug_message a function. Print the PID
before every line.
* elf/fini.c: Correctly use new _dl_debug_message function.
* elf/init.c: Likewise.
* elf/dl-lookup.c: Likewise.
* sysdeps/unix/sysv/linux/libc-start.c: Likewise.
* elf/dl-load.c: Likewise. Add more debugging prints.
* elf/dl-reloc.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/dl-support.c: Add variables for debugging.
* elf/rtld.c: Likewise. Recognize new debug options.
* elf/link.h: Declare new variables.
* elf/dl-deps.c (_dl_map_object_deps): Little optimizations.
* sysdeps/unix/sysv/linux/sys/quota.h: Extract information from
kernel headers. Patch by a sun <asun@saul7.u.washington.edu>.
1998-03-11 00:16 Tim Waugh <tim@cyberelk.demon.co.uk>
* posix/wordexp-test.c (command_line_test): New function to allow
testing of specific cases from the command-line.
1998-03-10 Ulrich Drepper <drepper@cygnus.com>
* elf/dl-init.c (_dl_init_next): Print nicer messages.
* elf/dl-fini.c (_dl_fini): Likewise.
* sysdeps/unix/sysv/linux/libc-start.c (__libc_start_main): Likewise.
1998-03-06 17:04 Ulrich Drepper <drepper@cygnus.com>
* libc.map: Add _dl_debug_impcalls, _dl_debug_fd, _dl_sysdep_output,
__libc_start_main.
* csu/Makefile (routines): Add libc-start.
* elf/dl-error.c: Remove declaration of _dl_argv. Include <unitsd.h>.
* elf/dl-lookup.c: Likewise.
* elf/dl-version.c: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* elf/link.h: Declare _dl_argv, _dl_debug_fd.
Declare _dl_sysdep_output. Make _dl_sysdep_fatal, _dl_sysdep_error and
_dl_sysdep_message macros which use _dl_sysdep_output.
* elf/dl-fini.c: Write out which destructor is called while debugging.
* elf/dl-init.c: Likewise for constructor.
* elf/dl-load.c: Use _dl_debug_message instead of _dl_sysdep_message.
* elf/dl-misc.c: Remove _dl_sysdep_fatal, _dl_sysdep_error and
_dl_sysdep_message. Add _dl_sysdep_output.
* elf/rtld.c: Recognize LD_DEBUG_OUTPUT. Set _dl_debug_fd if
this file can be opened.
For LD_DEBUG=libs also set _dl_debug_impcalls.
* sysdeps/generic/dl-cache.c: Include unistd.h.
* sysdeps/generic/libc-start.c: New file.
* sysdeps/i386/elf/start.S: Don't call main directly, call
* sysdeps/unix/sysv/linux/libc-start.c: New file.
__libc_start_main instead.
* elf/Makefile ($(objpfx)ld.so): Add $(load-map-file) as dependency.
