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2012-03-12Fix another instance of the _dl_random masking bug, plus coding style.David S. Miller
* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): Fix masking out of the most significant byte of random value used. * sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_setup_stack_chk_guard): Fix coding style in previous change.
2012-03-052012-03-05 Tom de Vries <tom@codesourcery.com>Tom de Vries
* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): Ensure default stack guard is set in last bytes. * sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_setup_stack_chk_guard): Same.
2012-02-09Replace FSF snail mail address with URLs.Paul Eggert
2011-05-15Make stack canary value harder to read through read overflowUlrich Drepper
2009-01-30* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): UseUlrich Drepper
memcpy instead of memcmp. (_dl_setup_pointer_guard): Likewise.
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.
2005-06-26* Versions.def (ld): Add GLIBC_2.4.Ulrich Drepper
* configure.in: Add --enable-stackguard-randomization option. (ENABLE_STACKGUARD_RANDOMIZE): New define. * config.h.in (ENABLE_STACKGUARD_RANDOMIZE): Add. * sysdeps/unix/sysv/linux/dl-osinfo.h: Include stdint.h. (_dl_setup_stack_chk_guard): New inline function. * sysdeps/generic/dl-osinfo.h: Include stdint.h. (_dl_setup_stack_chk_guard): New inline function. * elf/rtld.c (__stack_chk_guard): New variable. (dl_main): Remove all traces of TLS_INIT_TP_EXPENSIVE. Set __stack_chk_guard to _dl_setup_stack_chk_guard (), use THREAD_SET_STACK_GUARD if defined. * elf/Versions (ld): Export __stack_chk_guard@@GLIBC_2.4. * sysdeps/generic/libc-start.c (__stack_chk_guard): New variable. (__libc_start_main): Set __stack_chk_guard to _dl_setup_stack_chk_guard (), use THREAD_SET_STACK_GUARD if defined. * sysdeps/generic/libc-tls.c (__libc_setup_tls): Remove all traces of TLS_INIT_TP_EXPENSIVE. * debug/Versions (libc): Export __stack_chk_fail@@GLIBC_2.4. * debug/Makefile (routines): Add stack_chk_fail. (static-only-routines): Add stack_chk_fail_local. * debug/stack_chk_fail_local.c: New file. * debug/stack_chk_fail.c: New file. * elf/Makefile: Add rules to build and run tst-stackguard1{,-static} tests. * elf/tst-stackguard1.c: New file. * elf/tst-stackguard1-static.c: New file. * elf/stackguard-macros.h: New file.
2004-12-22(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.Ulrich Drepper
2007-07-122.5-18.1Jakub Jelinek
2000-08-22Update.Ulrich Drepper
* elf/Makefile (distribute): Add dl-osinfo.h. * sysdeps/generic/dl-osinfo.h: New file. * sysdeps/unix/sysv/linux/dl-osinfo.h: New file. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Use DL_SYSDEP_OSCHECK if defined. * sysdeps/unix/sysv/linux/init-first.c: Perform kernel version test only for !SHARED case. Get the code from dl-osinfo.h.