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freebsd-skq/lib/libc
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Konstantin Belousov 989b861f5c Carefully update stack guard bytes inside __guard_setup(). 
This is necessary to make sure that functions that can have stack
protection are not used to update the stack guard. If not, the stack
guard check would fail when it shouldn't.

guard_setup() calls elf_aux_info(), which, in turn, calls memcpy() to
update stack_chk_guard.  If either elf_aux_info() or memcpy() have
stack protection enabled, __stack_chk_guard will be modified before
returning from them, causing the stack protection check to fail.

This change uses a temporary buffer to delay changing
__stack_chk_guard until elf_aux_info() returns.

Submitted by:	Luis Pires
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D15173
2018-04-24 15:59:39 +00:00
..
aarch64 Remove architecture specific shmat.S files. 2018-04-05 18:17:46 +00:00
amd64 Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
arm Remove architecture specific shmat.S files. 2018-04-05 18:17:46 +00:00
capability Replace dot-dot relative pathing with SRCTOP-relative paths where possible 2017-01-20 03:23:24 +00:00
compat-43 General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
db libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
gdtoa libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
gen Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
gmon General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
i386 Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
iconv libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
include getentropy(3): Fallback to kern.arandom sysctl on older kernels 2018-03-21 23:52:37 +00:00
inet SPDX: license IDs for some ISC-related files. 2017-12-08 15:57:29 +00:00
isc SPDX: more ISC-related files. 2017-12-08 17:52:53 +00:00
locale Don't put multiple names on a single .Nm line. This fixes apropos(1) 2018-04-17 09:05:46 +00:00
md Replace dot-dot relative pathing with SRCTOP-relative paths where possible 2017-01-20 03:23:24 +00:00
mips Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
nameser SPDX: license IDs for some ISC-related files. 2017-12-08 15:57:29 +00:00
net Remove support for the Arcnet protocol. 2018-04-13 21:18:04 +00:00
nls Use current locale (f.e. set by thread). It was global locale always 2016-08-24 16:44:27 +00:00
posix1e libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
powerpc Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
powerpc64 Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
powerpcspe Correct an misunderstanding of MDSRCS. 2017-03-02 17:07:28 +00:00
quad General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
regex Add missing patch from r328240 2018-01-22 02:58:33 +00:00
resolv SPDX: license IDs for some ISC-related files. 2017-12-08 15:57:29 +00:00
riscv Replace SOFTFLOAT with __riscv_float_abi_*. 2018-04-19 20:36:15 +00:00
rpc des_crypt.3: Fix typo. 2018-03-07 09:31:27 +00:00
secure Carefully update stack guard bytes inside __guard_setup(). 2018-04-24 15:59:39 +00:00
softfloat Move softfloat symbol map entries to softfloat/Symbol.map. 2018-03-05 20:51:23 +00:00
sparc64 Replace MD assembly exect() with a portable version. 2018-04-12 18:23:14 +00:00
stdio Don't put multiple names on a single .Nm line. This fixes apropos(1) 2018-04-17 09:05:46 +00:00
stdlib Don't put multiple names on a single .Nm line. This fixes apropos(1) 2018-04-17 09:05:46 +00:00
stdtime libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
string Don't put multiple names on a single .Nm line. This fixes apropos(1) 2018-04-17 09:05:46 +00:00
sys Rename PROC_PDEATHSIG_SET -> PROC_PDEATHSIG_CTL and PROC_PDEATHSIG_GET 2018-04-20 15:19:27 +00:00
tests Add new gets_s(3) stdio function. 2018-04-03 18:52:38 +00:00
uuid libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
x86/sys Fix a regression in r321608. 2017-08-13 14:42:23 +00:00
xdr General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
yp libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
libc_nossp.ldscript Add different libc ldscript: the one without libssp -- 2016-10-12 13:19:21 +00:00
libc.ldscript
Makefile Support armv7 builds for userland 2017-10-05 23:01:33 +00:00
Makefile.depend DIRDEPS_BUILD: Regenerate without local dependencies. 2016-02-24 17:20:11 +00:00
Versions.def Create namespace for the symbols added during 12-CURRENT cycle. 2016-08-06 13:28:58 +00:00