Florian Weimer 035c012e32 Reduce the statically linked startup code [BZ #23323] ... It turns out the startup code in csu/elf-init.c has a perfect pair of ROP gadgets (see Marco-Gisbert and Ripoll-Ripoll, "return-to-csu: A New Method to Bypass 64-bit Linux ASLR"). These functions are not needed in dynamically-linked binaries because DT_INIT/DT_INIT_ARRAY are already processed by the dynamic linker. However, the dynamic linker skipped the main program for some reason. For maximum backwards compatibility, this is not changed, and instead, the main map is consulted from __libc_start_main if the init function argument is a NULL pointer. For statically linked binaries, the old approach based on linker symbols is still used because there is nothing else available. A new symbol version __libc_start_main@@GLIBC_2.34 is introduced because new binaries running on an old libc would not run their ELF constructors, leading to difficult-to-debug issues.		2021-02-25 12:13:02 +01:00
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bits	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mips32	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
mips64	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
sys	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
____longjmp_chk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
_test_and_set.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
clone.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
configure	Replace Minumum/minumum with Minimum/minimum	2020-10-06 05:15:11 -07:00
configure.ac	Replace Minumum/minumum with Minimum/minimum	2020-10-06 05:15:11 -07:00
dl-cache.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-static.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
errlist-compat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fxstat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getrlimit64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getsysstats.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Implies	NPTL is no longer an add-on!	2014-07-07 09:29:06 -07:00
kernel_rt_sigframe.h	Rename struct ucontext tag (bug 21457).	2017-06-26 22:03:58 +00:00
kernel_sigaction.h	linux: Consolidate sigaction implementation	2018-04-05 17:09:50 -03:00
kernel_stat.h	linux: Fix STATFS_IS_STATFS64 definition	2021-02-11 07:57:57 -03:00
kernel_termios.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
kernel-features.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ldsodefs.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-abis	MIPS support for GNU hash	2019-08-29 20:11:42 +00:00
lxstat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
makecontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	elf: Move vDSO setup to rtld (BZ#24967)	2020-01-03 11:22:07 -03:00
mmap_info.h	posix: Fix large mmap64 offset for mips64n32 (BZ#24699)	2019-07-10 16:52:50 -03:00
pipe.S	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
readelflib.c	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00
register-dump.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setrlimit64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
shlib-versions	Remove --enable-obsolete-nsl configure flag	2020-07-08 17:25:57 +02:00
sigcontextinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
struct_kernel_msqid64_ds.h	sysv: linux: Add 64-bit time_t variant for msgctl	2020-07-09 12:05:40 -03:00
struct_kernel_semid64_ds.h	sysv: linux: Add 64-bit time_t variant for semctl	2020-07-09 12:05:35 -03:00
struct_kernel_shmid64_ds.h	sysv: linux: Add 64-bit time_t variant for shmctl	2020-07-09 12:05:47 -03:00
swapcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syscalls.list	Consolidate Linux send implementation	2017-03-09 15:22:06 +01:00
sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ucontext_i.sym	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
unwind-arch.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ustat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Versions	signal: Move sys_errlist to a compat symbol	2020-07-07 14:10:58 -03:00
vfork.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
xstat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
xstatconv.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
xstatver.h	Remove mknod wrapper functions, move them to symbols	2020-10-09 17:02:06 -03:00