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2013-05-29Avoid crashing in LD_DEBUG when program name is unavailableSiddhesh Poyarekar
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.
2013-03-01Fix NEED_DL_SYSINFO_DSO conditionals.Roland McGrath
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers
2012-10-05Set up the data structures for vDSO in libc.aH.J. Lu
2012-10-03Clean up conditionalize of ld.so.cache support.Roland McGrath
2012-09-28Define VERSYMIDX/VALIDX/ADDRIDX in ldsodefs.hH.J. Lu
2012-09-19rtld: limit self loading check to normal mode onlyDmitry V. Levin
Commit glibc-2.14~10 disallowed rtld self loading to avoid a segfault that used to happen when rtld was loading itself in normal mode. Unfortunately, that commit disallowed all modes of self loading, including those that used to work before. This change limits the check for self loading to normal mode only, so that instruments like ldd could handle rtld properly.
2012-07-30Fix lots of bitrot for stub configurations.Roland McGrath
2012-07-27Add SystemTap static probes to the runtime linker. [BZ #14298]Gary Benson
2012-06-22Fix invalid memory access in do_lookup_x.Andreas Schwab
[BZ #13579] Do not free l_initfini and allow it to be reused on subsequent dl_open calls for the same library. This fixes the invalid memory access in do_lookup_x when the previously free'd l_initfini was accessed through l_searchlist when a library had been opened for the second time.
2012-05-14Use _dl_fatal_printf instead of a private variant.Roland McGrath
2012-04-11New ld.so argument --inhibit-ldcache to disable ld.so.cache lookupSiddhesh Poyarekar
It may sometimes be desirable to make the dynamic linker only pick up libraries from the library path and rpath and not look at the ld.so.cache that ldconfig generates. An example of such a use case is the glibc testsuite where the dynamic linker must not be influenced by any external paths or caches. This change adds a new option --inhibit-ldcache that when used, tells the dynamic linker to not use ld.so.cache even if it is available.
2012-04-05Fix DL_DEBUG_UNUSED to elide the VDSO and handle PLT references properly.David S. Miller
* elf/rtld.c (dl_main): If DL_DEBUG_UNUSED is enabled, turn off lazy binding. * elf/dl-lookup (_dl_lookup_symbol_x): If DL_DEBUG_UNUSED, ignore undefined symbol errors. * elf/rtlc.c (dl_main): Skip VDSO when checking for unused DT_NEEDED entries.
2012-03-20Move stdio-common/_itoa.h to sysdeps/genericH.J. Lu
2012-02-29Always set l_used for vDSO.Marek Polacek
2012-02-09Replace FSF snail mail address with URLs.Paul Eggert
2011-10-05Don't call ifunc functions in trace modeAndreas Schwab
2011-09-14Also relocate in dependency order when doing symbol dependency testingAndreas Schwab
2011-09-13Only use USE___THREAD when definedAndreas Schwab
2011-09-12Revert "Remove last use of USE___THREAD"Ulrich Drepper
This reverts commit de82006d43e198fd162807c9adc720c7ebd728a3. Conflicts: ChangeLog
2011-09-12Remove last use of USE___THREADAndreas Schwab
2011-09-10Simplify malloc initializationUlrich Drepper
Singificantly reduce the code needed at malloc initialization. In the process getpagesize is simplified by always initializing GLRO(dl_pagesize).
2011-08-30Relocate objects in dependency orderAndreas Schwab
2011-08-16Improve printing of lookup scopesUlrich Drepper
The scope of a new object should be printed earlier and when the scope of an already loaded object is extended only the changes should be printed.
2011-08-14Warning patrol.Roland McGrath
2011-08-13Implement LD_DEBUG=scopesUlrich Drepper
2011-05-30Handle DSOs without any dependency in ld.soUlrich Drepper
2011-05-30One more thinko in CLUlrich Drepper
2011-05-30Prevent loader from loading itselfUlrich Drepper
2011-02-20Move setting variable in relro data earlier in ld.so.Andreas Schwab
2010-12-19Make PowerPC64 default to nonexecutable stackRyan S. Arnold
2010-10-26Fix assertion in ld.so, introduced by delayed adding to global list.Ulrich Drepper
2010-10-26Fix concurrency problem between dl_open and dl_iterate_phdrAndreas Krebbel
2010-10-24Require suid bit on audit objects in privileged programsAndreas Schwab
2010-09-15Don't try to free rpath strings allocated during startupAndreas Schwab
2010-05-03Don't deadlock in __dl_iterate_phdr while (un)loading objects.Andreas Schwab
2010-04-05elf/rtld.c (dl_main) [HAVE_AUX_VECTOR]: Add a cast.Roland McGrath
2010-03-29Handle platforms without aux vectorThomas Schwinge
2010-01-15ld.so: Adjust the auxv if ld.so is directly invoked.Andreas Krebbel
If a binary gets invoked by passing it as argument to ld.so the stack still holds the auxiliary vector of ld.so when entering the _start routine of the executable. So the invocation via ld.so is not fully transparent to the executable. This causes problems if the executable wants to scan the auxv itself.
2009-07-09Implement STB_GNU_UNIQUE handling.Ulrich Drepper
Some symbols have to be identified process-wide by their name. This is particularly important for some C++ features (e.g., class local static data and static variables in inline functions). This cannot completely be implemented with ELF functionality so far. The STB_GNU_UNIQUE binding helps by ensuring the dynamic linker will always use the same definition for all symbols with the same name and this binding.
2009-04-172009-04-16 Samuel Thibault <samuel.thibault@ens-lyon.org>Roland McGrath
* elf/rtld.c (dl_main): Really call _dl_sysdep_start_cleanup after all calls to _dl_relocate_object.
2009-04-01* elf/dl-open.c: Keep track of used name spaces and only iterate overcvs/fedora-glibc-20090401T0935Ulrich Drepper
those which are used. * elf/dl-addr.c: Likewise. * elf/dl-caller.c: Likewise. * elf/dl-fini.c: Likewise. * elf/dl-iteratephdr.c: Likewise. * elf/dl-libc.c: Likewise. * elf/dl-load.c: Likewise. * elf/dl-support.c: Likewise. * elf/dl-sym.c: Likewise. * elf/rtld.c: Likewise. * sysdeps/generic/ldsodefs.h: Likewise.
2009-03-31* elf/dl-load.c: Remove support for systems without MAP_ANON.Ulrich Drepper
* elf/dl-minimal.c: Likewise. * elf/dl-misc.c: Likewise. * elf/rtld.c: Likewise. * sysdeps/generic/ldsodefs.h: Likewise.
2009-03-16[BZ #9733]Ulrich Drepper
* elf/dl-load.c (_dl_map_object_from_fd): Only call audit hooks if we are not loading a new audit library. * elf/dl-reloc (_dl_relocate_object): Third parameter is now a bitmask. Only use profiling trampoline for auditing if we are not relocating an audit library. * elf/dl-open.c (dl_open_worker): Adjust _dl_relocate_object call. * elf/rtld.c: Likewise. * sysdeps/generic/ldsodefs.h: Adjust _dl_relocate_object prototype.
2009-03-16* elf/rtld.c (dl_main): Extend help message for --audit option.Ulrich Drepper
2009-01-11* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): TakeUlrich Drepper
one parameter. If non-NULL use it to initialize return value. (_dl_setup_pointer_guard): New function. * sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise. * sysdeps/generic/ldsodefs.h: Declare _dl_random. * elf/rtld.c (security_init): Pass _dl_random to _dl_setup_stack_chk_guard. Call _dl_setup_pointer_guard to initialize pointer_chk_guard. * elf/dl-sysdep.c (_dl_random): New variable. (_dl_sysdep_start): Handle AT_RANDOM. (_dl_show_auxv): Likewise. * elf/dl-support.c (_dl_random): New variable. (_dl_aux_init): Handle AT_RANDOM. * csu/libc-start.c [!SHARED] (libc_start_main): Pass _dl_random to _dl_setup_stack_chk_guard. * elf/elf.h (AT_RANDOM): Define AT_BASE_PLATFORM and AT_RANDOM.
2008-08-14* sysdeps/unix/sysv/linux/dl-origin.c (_dl_get_origin): Undo allUlrich Drepper
change related to AT_EXECFN. We cannot use that string. * sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove _dl_execfn member. * elf/dl-support.c: Remove _dl_execfn variable. (_dl_aux_init): Remove handling of AT_EXECFN. * elf/dl-sysdep.c (_dl_sysdep_start): Remove handling of AT_EXECFN. * elf/rtld.c (process_envvars): Remove use of __ASSUME_AT_EXECFN.
2008-07-24* elf/elf.h: Define AT_EXECFN.Ulrich Drepper
* elf/rtld.c [!__ASSUME_AT_EXECFN] (process_envvars): Don't handle LD_ORIGIN_PATH. * elf/dl-sysdep.c (_dl_sysdep_start): Handle AT_EXECFN. * elf/dl-support.c: Define _dl_execfn. Don't define _dl_origin_path if __ASSUME_AT_EXECFN is defined. (_dl_aux_init): Handle AT_EXECFN. * sysdeps/unix/sysv/linux/kernel-features.h: Define __ASSUME_AT_EXECFN for 2.6.27 and up. * sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_execfn. Don't define _dl_origin_path if __ASSUME_AT_EXECFN is defined. * sysdeps/unix/sysv/linux/dl-origin.c (_dl_get_origin): Use _dl_execfn if available and avoid compatibility code if __ASSUME_AT_EXECFN is defined.
2008-03-08[BZ #5786]Ulrich Drepper
* elf/dl-sysdep.c: Undefine ROUND after use. * sysdeps/generic/ldsodefs.h [HAVE_DL_DISCOVER_OSVERSION] (struct rtld_global_ro): Add _dl_tls_get_addr_soft element. * elf/rtld.c (rtld_global_ro): Initialize _dl_discover_osversion. * sysdeps/unix/sysv/linux/dl-osinfo.h: Move _dl_discover_osversion to ... * sysdeps/unix/sysv/linux/dl-sysdep.c: ...here. * sysdeps/unix/sysv/linux/dl-sysdep.h: Declare _dl_discover_osversion if necessary. * sysdeps/unix/sysv/linux/sysconf.c: Handle _SC_ARG_MAX here.
2008-03-08* sysdeps/generic/ldsodefs.h (struct rtld_global_ro): AddUlrich Drepper
_dl_tls_get_addr_soft element. * elf/rtld.c (rtld_global_ro): Initialize _dl_tls_get_addr_soft. * elf/Versions (ld): Don't export _dl_tls_get_addr_soft. * dlfcn/dlinfo.c (dlinfo_doit): Access dl_tls_get_addr_soft through GLRO. * elf/dl-iteratephdr.c (__dl_iterate_phdr): Likewise. * elf/dl-tls.c (_dl_tls_get_addr_soft): Use attribute_hidden instead of internal_function.
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