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Florian Weimer 8dcb6d0af0 dlfcn: Do not use rtld_active () to determine ld.so state (bug 29078)
When audit modules are loaded, ld.so initialization is not yet
complete, and rtld_active () returns false even though ld.so is
mostly working.  Instead, the static dlopen hook is used, but that
does not work at all because this is not a static dlopen situation.

Commit 466c1ea15f ("dlfcn: Rework
static dlopen hooks") moved the hook pointer into _rtld_global_ro,
which means that separate protection is not needed anymore and the
hook pointer can be checked directly.

The guard for disabling libio vtable hardening in _IO_vtable_check
should stay for now.

Fixes commit 8e1472d2c1 ("ld.so:
Examine GLRO to detect inactive loader [BZ #20204]").

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-04-26 14:24:36 +02:00
argp Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
assert Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
benchtests benchtests: Improve bench-strrchr 2022-04-22 23:07:54 -05:00
bits elf: Issue la_symbind for bind-now (BZ #23734) 2022-02-01 14:49:46 -03:00
catgets Update copyright dates not handled by scripts/update-copyrights. 2022-01-01 11:42:26 -08:00
ChangeLog.old Create ChangeLog.old/ChangeLog.24. 2022-02-03 00:27:54 -05:00
conform hurd: drop SA_SIGINFO availability xfail 2022-01-15 17:43:07 +01:00
crypt crypt: Remove unused variable on cert test 2022-03-31 09:00:54 -03:00
csu elf: Remove __libc_init_secure 2022-04-19 15:52:27 -07:00
ctype Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
debug misc: Fix rare fortify crash on wchar funcs. [BZ 29030] 2022-04-25 17:32:30 +05:30
dirent associate a deallocation for opendir 2022-03-14 20:02:46 +05:30
dlfcn dlfcn: Do not use rtld_active () to determine ld.so state (bug 29078) 2022-04-26 14:24:36 +02:00
elf dlfcn: Do not use rtld_active () to determine ld.so state (bug 29078) 2022-04-26 14:24:36 +02:00
gmon Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
gnulib Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
grp Add access function attributes to grp and shadow headers 2022-03-14 20:02:30 +05:30
gshadow Add access function attributes to grp and shadow headers 2022-03-14 20:02:30 +05:30
hesiod Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
htl htl: Destroy thread-specific data before releasing joins 2022-02-14 19:29:02 +01:00
hurd Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
iconv Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
iconvdata Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
include elf: Remove __libc_init_secure 2022-04-19 15:52:27 -07:00
inet inet: Return EAI_MEMORY when nrl_domainname() fails to allocate memory 2022-03-08 12:51:29 -03:00
intl intl: Avoid -Wuse-after-free [BZ #26779] 2022-01-25 17:38:31 -07:00
io io: Add fsync call in tst-stat 2022-02-28 11:50:41 +01:00
libio libio: Flush-only _IO_str_overflow must not return EOF (bug 28949) 2022-03-18 21:40:02 +01:00
locale Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
localedata Add locale for syr_SY 2022-04-21 13:05:40 +02:00
login Update copyright dates not handled by scripts/update-copyrights. 2022-01-01 11:42:26 -08:00
mach mach: Fix LLL_SHARED value 2022-02-14 19:29:02 +01:00
malloc malloc: Fix duplicate inline for do_set_mxfast 2022-03-23 12:28:44 -03:00
manual INSTALL: Rephrase -with-default-link documentation 2022-04-26 14:22:23 +02:00
math math: Add more input to atanh accuracy tests 2022-02-24 09:20:43 -08:00
mathvec Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
misc misc: Fix rare fortify crash on wchar funcs. [BZ 29030] 2022-04-25 17:32:30 +05:30
nis Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
nptl nptl: Fix pthread_cancel cancelhandling atomic operations 2022-04-20 12:01:43 -03:00
nptl_db Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
nscd nscd: Remove unused variable 2022-03-23 15:33:17 -03:00
nss hurd: Fix arbitrary error code 2022-04-12 22:15:48 +02:00
po Update translations. 2022-02-02 23:30:15 -05:00
posix Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
pwd Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
resolv Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
resource Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
rt rt/tst-mqueue*: Return UNSUPPORTED when mq_open fails with ENOSYS 2022-01-17 19:17:41 +01:00
scripts scripts/glibcelf.py: Mark as UNSUPPORTED on Python 3.5 and earlier 2022-04-25 09:14:49 +02:00
setjmp Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
shadow Add access function attributes to grp and shadow headers 2022-03-14 20:02:30 +05:30
signal Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
socket socket: Add the __sockaddr_un_set function 2022-01-17 10:21:53 +01:00
soft-fp Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
stdio-common stdio: Split __get_errname definition from errlist.c 2022-04-15 09:37:57 -03:00
stdlib stdlib: Reflow and sort most variable assignments 2022-04-13 16:52:39 -03:00
string Replace {u}int_fast{16|32} with {u}int32_t 2022-04-13 21:23:04 -05:00
sunrpc CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768) 2022-01-17 10:47:58 +01:00
support support: Add xmkfifo 2022-04-15 09:59:33 -03:00
sysdeps elf: Remove unused enum allowmask 2022-04-25 01:01:02 -07:00
sysvipc Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
termios posix: Add terminal control setting support for posix_spawn 2022-01-25 14:07:53 -03:00
time Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
timezone timezone: Fix tst-bz28707 Makefile rule 2022-01-12 10:30:10 -03:00
wcsmbs debug: Synchronize feature guards in fortified functions [BZ #28746] 2022-01-12 23:34:48 +05:30
wctype Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
.clang-format Add .clang-format style file 2022-04-11 10:51:03 -05:00
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 Properly check linker option in LIBC_LINKER_FEATURE [BZ #28738] 2022-01-03 05:12:34 -08:00
config.h.in Remove -z combreloc and HAVE_Z_COMBRELOC 2022-04-04 17:19:07 -07:00
config.make.in Remove -z combreloc and HAVE_Z_COMBRELOC 2022-04-04 17:19:07 -07:00
configure Default to --with-default-link=no (bug 25812) 2022-04-22 10:59:03 +02:00
configure.ac Default to --with-default-link=no (bug 25812) 2022-04-22 10:59:03 +02:00
CONTRIBUTED-BY Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
COPYING Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
COPYING.LIB Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
INSTALL INSTALL: Rephrase -with-default-link documentation 2022-04-26 14:22:23 +02:00
libc-abis riscv: support GNU indirect function 2021-01-10 21:25:13 -05:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Remove -z combreloc and HAVE_Z_COMBRELOC 2022-04-04 17:19:07 -07:00
Makefile Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Makefile.help Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules build: Properly generate .d dependency files [BZ #28922] 2022-02-25 10:35:45 -08:00
NEWS NEWS: Move PLT tracking slowdown to glibc 2.35. 2022-04-12 13:26:10 -04:00
o-iterator.mk Fri Mar 17 12:58:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> 1995-03-17 18:42:51 +00:00
README Documentation for OpenRISC port 2022-01-05 06:40:06 +09:00
Rules Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
SHARED-FILES Mention today's regex merge in SHARED-FILES 2021-09-21 18:00:10 -07:00
shlib-versions nss: Do not mention NSS test modules in <gnu/lib-names.h> 2022-03-11 08:24:04 +01:00
test-skeleton.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
version.h Open master branch for glibc 2.36 development 2022-02-03 01:21:33 -05:00

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
	alpha*-*-linux-gnu
	arc*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
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	microblaze*-*-linux-gnu
	mips-*-linux-gnu
	mips64-*-linux-gnu
	or1k-*-linux-gnu
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.
	s390-*-linux-gnu
	s390x-*-linux-gnu
	riscv32-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see https://www.gnu.org/software/libc/ for more
information.

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at https://www.gnu.org/software/libc/.

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
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This web page gives detailed information on how to report bugs properly.

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