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Florian Weimer f7649d5780 dlopen: Do not block signals
Blocking signals causes issues with certain anti-malware solutions
which rely on an unblocked SIGSYS signal for system calls they
intercept.

This reverts commit a2e8aa0d9e
("Block signals during the initial part of dlopen") and adds
comments related to async signal safety to active_nodelete and
its caller.

Note that this does not make lazy binding async-signal-safe with regards
to dlopen.  It merely avoids introducing new async-signal-safety hazards
as part of the NODELETE changes.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-12-13 10:23:10 +01:00
argp Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
assert Fix failure when CFLAGS contains -DNDEBUG (Bug 25251) 2019-12-10 12:22:42 -05:00
benchtests Add new script for plotting string benchmark JSON output 2019-11-13 14:18:52 +00:00
bits Define __STATFS_MATCHES_STATFS64 2019-10-24 09:14:26 -07:00
catgets Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
ChangeLog.old Undo accidental commit to ChangeLog.19. 2019-10-18 16:09:10 -04:00
conform sysvipc: Set ipc_perm mode as mode_t (BZ#18231) 2019-10-10 17:33:27 -03:00
crypt Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
csu Introduce link_map_audit_state accessor function 2019-11-15 13:03:40 +01:00
ctype Split up endian.h to minimize exposure of BYTE_ORDER. 2019-10-01 14:54:46 -07:00
debug Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
dirent Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
dlfcn dlfcn: Remove remnants of caller sensitivity from dlinfo 2019-10-16 18:21:30 +02:00
elf dlopen: Do not block signals 2019-12-13 10:23:10 +01:00
gmon Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
gnulib Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
grp Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
gshadow Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
hesiod Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
htl Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
hurd hurd: Use __clock_gettime in _hurd_select 2019-11-07 09:54:33 +01:00
iconv Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
iconvdata Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
include dlopen: Rework handling of pending NODELETE status 2019-12-13 10:18:46 +01:00
inet Change most internal uses of __gettimeofday to __clock_gettime. 2019-10-30 17:04:10 -03:00
intl Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
io hurd: Fix ld.so __access override from libc 2019-12-01 21:05:56 +00:00
libio libio: Disable vtable validation for pre-2.1 interposed handles [BZ #25203] 2019-11-27 20:16:22 +01:00
locale locale: Greek -> ASCII transliteration table [BZ #12031] 2019-11-26 12:23:09 +01:00
localedata ru_UA locale: use copy "ru_RU" in LC_TIME (bug 25044) 2019-11-26 11:54:29 +01:00
login login: Use pread64 in utmp implementation 2019-11-12 20:13:35 +01:00
mach hurd: make strerror(0) coherent with other ports 2019-12-01 16:36:43 +00:00
malloc Correct range checking in mallopt/mxfast/tcache [BZ #25194] 2019-12-05 16:46:37 -05:00
manual manual: clarify fopen with the x flag 2019-12-11 09:40:02 -08:00
math math: enhance the endloop condition of function handle_input_flag 2019-11-07 00:26:54 +00:00
mathvec Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
misc misc: Set generic pselect as ENOSYS 2019-11-22 14:40:57 -03:00
nis Change most internal uses of __gettimeofday to __clock_gettime. 2019-10-30 17:04:10 -03:00
nptl nptl: Add more missing placeholder abi symbol from nanosleep move 2019-12-09 15:04:56 -03:00
nptl_db slotinfo in struct dtv_slotinfo_list should be flexible array [BZ #25097] 2019-11-12 13:54:30 +01:00
nscd Change most internal uses of time to __clock_gettime. 2019-10-30 17:11:10 -03:00
nss Comment out initgroups from example nsswitch.conf (Bug 25146) 2019-10-29 13:08:24 -04:00
po Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
posix Fix array bounds violation in regex matcher (bug 25149) 2019-11-11 12:24:59 +01:00
pwd Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
resolv resolv: Implement trust-ad option for /etc/resolv.conf [BZ #20358] 2019-11-27 20:54:37 +01:00
resource Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
rt Set the expects flags to clock_nanosleep 2019-09-25 16:28:45 -07:00
scripts build-many-glibcs.py: Move sparcv8 to extra_glibcs 2019-12-05 08:51:58 -03:00
setjmp Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
shadow Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
signal Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
socket Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
soft-fp Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
stdio-common Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
stdlib Expand $(as-needed) and $(no-as-needed) throughout the build system 2019-12-03 21:37:50 +01:00
string <string.h>: Define __CORRECT_ISO_CPP_STRING_H_PROTO for Clang [BZ #25232] 2019-12-05 16:50:00 +01:00
sunrpc Change most internal uses of __gettimeofday to __clock_gettime. 2019-10-30 17:04:10 -03:00
support resolv: Implement trust-ad option for /etc/resolv.conf [BZ #20358] 2019-11-27 20:54:37 +01:00
sysdeps hurd: Fix __close_nocancel_nostatus availability 2019-12-13 03:39:28 +01:00
sysvipc Remove libc_hidden_def from __semtimedop stub 2019-10-17 21:36:34 +02:00
termios Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
time Declare asctime_r, ctime_r, gmtime_r, localtime_r for C2X. 2019-11-11 15:04:48 +00:00
timezone Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
wcsmbs Use DEPRECATED_SCANF macro for remaining C99-compliant scanf functions 2019-11-22 15:29:21 -03:00
wctype Split up endian.h to minimize exposure of BYTE_ORDER. 2019-10-01 14:54:46 -07:00
.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 LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
config.h.in sparc: Assume GOTDATA support in the toolchain 2019-10-09 19:15:33 +02:00
config.make.in Make --bindir effective 2019-05-14 11:04:33 -03:00
configure x86: Assume --enable-cet if GCC defaults to CET [BZ #25225] 2019-12-03 18:48:18 +01:00
configure.ac x86: Assume --enable-cet if GCC defaults to CET [BZ #25225] 2019-12-03 18:48:18 +01:00
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 Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
libc-abis libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] 2018-07-05 18:06:43 +01:00
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 Expand $(as-needed) and $(no-as-needed) throughout the build system 2019-12-03 21:37:50 +01:00
Makefile Do not use ld.so to open statically linked programs in debugglibc.sh 2019-12-04 09:17:06 -03:00
Makefile.help Add run-one-test convenience target and makefile help text 2019-10-18 15:46:04 -04:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Expand $(as-needed) and $(no-as-needed) throughout the build system 2019-12-03 21:37:50 +01:00
NEWS Lazy binding failures during dlopen/dlclose must be fatal [BZ #24304] 2019-11-27 20:55:35 +01:00
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 Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
Rules Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
shlib-versions Extend NSS test suite 2017-07-17 15:52:44 -04:00
test-skeleton.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
version.h Open master for 2.31 development. 2019-08-01 00:41:53 -04:00

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,
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