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4 years agox86-64: Fix FMA4 detection in ifunc [BZ #26534]
Ondřej Hošek [Wed, 26 Aug 2020 02:26:50 +0000 (04:26 +0200)]
x86-64: Fix FMA4 detection in ifunc [BZ #26534]

A typo in commit 107e6a3c2212ba7a3a4ec7cae8d82d73f7c95d0b causes the
FMA4 code path to be taken on systems that support FMA, even if they do
not support FMA4. Fix this to detect FMA4.

4 years agoy2038: nptl: Convert pthread_cond_{clock|timed}wait to support 64 bit time
Lukasz Majewski [Tue, 11 Aug 2020 08:49:03 +0000 (10:49 +0200)]
y2038: nptl: Convert pthread_cond_{clock|timed}wait to support 64 bit time

The pthread_cond_clockwait and pthread_cond_timedwait have been converted
to support 64 bit time.

This change introduces new futex_abstimed_wait_cancelable64 function in
./sysdeps/nptl/futex-helpers.c, which uses futex_time64 where possible
and tries to replace low-level preprocessor macros from
lowlevellock-futex.h
The pthread_cond_{clock|timed}wait only accepts absolute time. Moreover,
there is no need to check for NULL passed as *abstime pointer as
__pthread_cond_wait_common() always passes non-NULL struct __timespec64
pointer to futex_abstimed_wait_cancellable64().

For systems with __TIMESIZE != 64 && __WORDSIZE == 32:
- Conversions between 64 bit time to 32 bit are necessary
- Redirection to __pthread_cond_{clock|timed}wait64 will provide support
  for 64 bit time

The futex_abstimed_wait_cancelable64 function has been put into a separate
file on the purpose - to avoid issues apparent on the m68k architecture
related to small number of available registers (there is not enough
registers to put all necessary arguments in them if the above function
would be added to futex-internal.h with __always_inline attribute).

In fact - new function - namely __futex_abstimed_wait_cancellable32 is
used to reduce number of needed registers (as some in-register values are
stored on the stack when function call is made).

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Run-time tests:
- Run specific tests on ARM/x86 32bit systems (qemu):
  https://github.com/lmajewski/meta-y2038 and run tests:
  https://github.com/lmajewski/y2038-tests/commits/master

Above tests were performed with Y2038 redirection applied as well as without
to test the proper usage of both __pthread_cond_{clock|timed}wait64 and
__pthread_cond_{clock|timed}wait.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
4 years agomalloc: Fix mallinfo deprecation declaration
Adhemerval Zanella [Mon, 31 Aug 2020 14:14:01 +0000 (11:14 -0300)]
malloc: Fix mallinfo deprecation declaration

It fixes the build issue below introduced by e3960d1c57e57 (Add
mallinfo2  function that support sizes >= 4GB).  It moves the
__MALLOC_DEPRECATED to the usual place for function attributes:

  In file included from ../include/malloc.h:3,
                   from ../sysdeps/x86_64/multiarch/../../../test-skeleton.c:31,
                   from ../sysdeps/x86_64/multiarch/test-multiarch.c:96:
  ../malloc/malloc.h:118:1: error: empty declaration [-Werror]
    118 | __MALLOC_DEPRECATED;

It also adds the required deprecated warning suppression on the tests.

Checked on x86_64-linux-gnu.

4 years agox32: Add <fixup-asm-unistd.h> and regenerate arch-syscall.h
H.J. Lu [Tue, 25 Aug 2020 12:35:45 +0000 (05:35 -0700)]
x32: Add <fixup-asm-unistd.h> and regenerate arch-syscall.h

X32 uses the same 64-bit syscall interface for set_thread_area.  But
__NR_set_thread_area is missing from <asm/unistd_x32.h>.  A kernel patch
was submitted:

From 7b05d5b43ae2545e0d4a3edb24205d18bc883626 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 15 Aug 2020 10:34:00 -0700
Subject: [PATCH] x86-64: Enable x32 set_thread_area

X32 uses the common 64-bit syscall interface for set_thread_area.  Add
<fixup-asm-unistd.h> to provide __NR_set_thread_area.

Co-authored-by: Florian Weimer <fweimer@redhat.com>
4 years agoAdd mallinfo2 function that support sizes >= 4GB.
Martin Liska [Tue, 7 Jul 2020 11:58:24 +0000 (13:58 +0200)]
Add mallinfo2 function that support sizes >= 4GB.

The current int type can easily overflow for allocation of more
than 4GB.

4 years agoRemove obsolete default/nss code
Thorsten Kukuk [Sat, 29 Aug 2020 09:42:39 +0000 (11:42 +0200)]
Remove obsolete default/nss code

All code reading /etc/default/nss and using the internal
defines got removed, so the config file should be removed, too.

4 years agoAArch64: Improve backwards memmove performance
Wilco Dijkstra [Fri, 28 Aug 2020 16:51:40 +0000 (17:51 +0100)]
AArch64: Improve backwards memmove performance

On some microarchitectures performance of the backwards memmove improves if
the stores use STR with decreasing addresses.  So change the memmove loop
in memcpy_advsimd.S to use 2x STR rather than STP.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
4 years agoAdd RISC-V 32-bit target to build-many-glibcs.py
Zong Li [Fri, 30 Nov 2018 09:18:40 +0000 (17:18 +0800)]
Add RISC-V 32-bit target to build-many-glibcs.py

Support building three variants of 32-bit RISC-V glibc as follows:
- riscv32-linux-gnu-rv32imac-ilp32
- riscv32-linux-gnu-rv32imafdc-ilp32
- riscv32-linux-gnu-rv32imafdc-ilp32d

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoDocumentation for the RISC-V 32-bit port
Alistair Francis [Tue, 14 Jul 2020 13:29:56 +0000 (06:29 -0700)]
Documentation for the RISC-V 32-bit port

There is already RISC-V 64-bit port information in the documentation.
Let's add some documentation entries for the RISC-V 32-bit as well.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Build infrastructure for 32-bit port
Zong Li [Fri, 30 Nov 2018 09:18:00 +0000 (17:18 +0800)]
RISC-V: Build infrastructure for 32-bit port

This patch lays out the top-level organisation of the RISC-V 32-bit port.
It provides all the Implies files as well as various other fragments of
the build infrastructure.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add rv32 path to RTLDLIST in ldd
Zong Li [Tue, 10 Sep 2019 04:35:50 +0000 (21:35 -0700)]
RISC-V: Add rv32 path to RTLDLIST in ldd

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoriscv32: Specify the arch_minimum_kernel as 5.4
Alistair Francis [Sat, 21 Dec 2019 02:29:42 +0000 (18:29 -0800)]
riscv32: Specify the arch_minimum_kernel as 5.4

Specify the minimum kernel version for RISC-V 32-bit as the 5.4 kernel.
We require this commit: "waitid: Add support for waiting for the current
process group" for the kernel as it adds support for the P_PGID id for
the waitid syscall.  Without this patch we can't replace the wait4
syscall on 64-bit time_t only systems.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Fix llrint and llround missing exceptions on RV32
Zong Li [Fri, 30 Nov 2018 09:18:20 +0000 (17:18 +0800)]
RISC-V: Fix llrint and llround missing exceptions on RV32

Conversions from a float to a long long on 32-bit RISC-V (RV32) may not
raise the correct exceptions on overflow, it also may raise spurious
"inexact" exceptions on non overflow cases.  This patch fixes the
problem, similarly to the fix for MIPS, ARM and S390.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add the RV32 libm-test-ulps
Alistair Francis [Sat, 4 Jan 2020 01:56:50 +0000 (17:56 -0800)]
RISC-V: Add the RV32 libm-test-ulps

Add a libm-test-ulps for RV32, this is the same as the RV64 one.

This dosn't match what is generated by running `make regen-ulps` on RV32
QEMU, but the current in tree RV64 doesn't match that either.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add 32-bit ABI lists
Alistair Francis [Mon, 13 Jul 2020 16:08:25 +0000 (09:08 -0700)]
RISC-V: Add 32-bit ABI lists

Use the update-abi Make target to generate the abilist for RV32.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add hard float support for 32-bit CPUs
Zong Li [Fri, 30 Nov 2018 09:16:38 +0000 (17:16 +0800)]
RISC-V: Add hard float support for 32-bit CPUs

This patch adds support for hardware floating-point support for the
RV32IF and RV32IFD platforms.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Support the 32-bit ABI implementation
Alistair Francis [Mon, 10 Feb 2020 18:36:21 +0000 (10:36 -0800)]
RISC-V: Support the 32-bit ABI implementation

This patch adds the ABI implementation for 32-bit RISC-V.  It contains
the Linux-specific and RISC-V architecture code.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add arch-syscall.h for RV32
Alistair Francis [Thu, 2 Jan 2020 19:38:27 +0000 (11:38 -0800)]
RISC-V: Add arch-syscall.h for RV32

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add path of library directories for the 32-bit
Alistair Francis [Thu, 9 Jul 2020 17:02:06 +0000 (10:02 -0700)]
RISC-V: Add path of library directories for the 32-bit

With RV32 support the list of possible RISC-V system directories
increases to:
     - /lib64/lp64d
     - /lib64/lp64
     - /lib32/ilp32d
     - /lib32/ilp32
     - /lib (only ld.so)

This patch changes the add_system_dir () macro to support the new ilp32d
and ilp32 directories for RV32.  While refactoring this code let's split
out the confusing if statements into a loop to make it easier to
understand and extend.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Support dynamic loader for the 32-bit
Zong Li [Fri, 30 Nov 2018 09:14:35 +0000 (17:14 +0800)]
RISC-V: Support dynamic loader for the 32-bit

Add the LD_SO_ABI definition for RISC-V 32-bit.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Add support for 32-bit vDSO calls
Alistair Francis [Wed, 18 Sep 2019 15:41:59 +0000 (08:41 -0700)]
RISC-V: Add support for 32-bit vDSO calls

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Use 64-bit-time syscall numbers with the 32-bit port
Alistair Francis [Tue, 25 Jun 2019 23:32:38 +0000 (16:32 -0700)]
RISC-V: Use 64-bit-time syscall numbers with the 32-bit port

sysdep.h redefines only the syscall where the generic implementation
still does not have actual 64-bit time_t support:

   /* Workarounds for generic code needing to handle 64-bit time_t.  */

   /* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c.  */
   #define __NR_clock_getres    __NR_clock_getres_time64
   /* Fix sysdeps/nptl/lowlevellock-futex.h.  */
   #define __NR_futex           __NR_futex_time64
   [...]

This patch also adds a comment that it is a workaround to handle 64-bit
time_t and on each #define comment for which implementation it intends
to.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Cleanup some of the sysdep.h code
Alistair Francis [Wed, 8 Jul 2020 14:49:40 +0000 (07:49 -0700)]
RISC-V: Cleanup some of the sysdep.h code

Remove a duplicate inclusion of <sysdeps/unix/sysdep.h> which is already
pulled via <sysdeps/unix/sysv/linux/generic/sysdep.h>, and the inclusion
of <errno.h> whose definition of `__set_errno' is not needed here.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoRISC-V: Use 64-bit time_t and off_t for RV32 and RV64
Alistair Francis [Fri, 21 Jun 2019 18:31:56 +0000 (11:31 -0700)]
RISC-V: Use 64-bit time_t and off_t for RV32 and RV64

Using the original glibc headers under bits/ let's make small
modifications to use 64-bit time_t and off_t for both RV32 and RV64.

For the typesizes.h, here are justifications for the changes from the
generic version (based on Arnd's very helpful feedback):
- All the !__USE_FILE_OFFSET64 types (__off_t, __ino_t, __rlim_t, ...)
  are changed to match the 64-bit replacements.

- __time_t is defined to 64 bit, but no __time64_t is added. This makes
  sense as we don't have the time64 support for other 32-bit
  architectures yet, and it will be easy to change when that happens.

- __suseconds_t is 64-bit. This matches what we use the kernel ABI for
  the few drivers that are relying on 'struct timeval' input arguments
  in ioctl, as well as the adjtimex system call. It means that timeval
  has to be defined without the padding, unlike timespec, which needs
  padding.

Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
4 years agoio/lockf: Include bits/types.h before __OFF_T_MATCHES_OFF64_T check
Alistair Francis [Tue, 25 Aug 2020 18:15:27 +0000 (11:15 -0700)]
io/lockf: Include bits/types.h before __OFF_T_MATCHES_OFF64_T check

It's possible that although __OFF_T_MATCHES_OFF64_T is defined the
included the relevent header file.  This results in a io/tst-lockf
failure for RV32 by calling the non 64-bit version of lockf.  This
patch fixes the failure by including bits/types.h.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
4 years agoelf/tst-libc_dlvsym: Add a TEST_COMPAT around some symbol tests
Alistair Francis [Mon, 24 Aug 2020 22:35:44 +0000 (15:35 -0700)]
elf/tst-libc_dlvsym: Add a TEST_COMPAT around some symbol tests

The _sys_errlist and _sys_siglist symbols are deprecated since 2.32.
This patch adds a TEST_COMPAT check around the tests. This fixes test
failures on new architectures (such as RV32) that don't have this
symbol defined.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
4 years agohurd: define BSD 4.3 ioctls only under __USE_MISC
Samuel Thibault [Thu, 27 Aug 2020 11:35:58 +0000 (13:35 +0200)]
hurd: define BSD 4.3 ioctls only under __USE_MISC

4 years agostring: test strncasecmp and strncpy near page boundaries
Raphael Moreira Zinsly [Fri, 21 Aug 2020 15:10:22 +0000 (12:10 -0300)]
string: test strncasecmp and strncpy near page boundaries

Add tests to check if strings placed at page boundaries are
handled correctly by strncasecmp and strncpy similar to tests
for strncmp and strnlen.

4 years agolinux: Simplify utimensat
Adhemerval Zanella [Fri, 10 Jul 2020 18:13:48 +0000 (15:13 -0300)]
linux: Simplify utimensat

With arch-syscall.h it can now assumes the existance of either
__NR_utimensat or __NR_utimensat_time64.  The 32-bit time_t
support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify timerfd_settime
Adhemerval Zanella [Fri, 10 Jul 2020 18:11:13 +0000 (15:11 -0300)]
linux: Simplify timerfd_settime

 With arch-syscall.h it can now assumes the existance of either
__NR_timer_settime or __NR_time_settime_time64.  The 32-bit time_t
support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify timer_gettime
Adhemerval Zanella [Fri, 10 Jul 2020 18:05:51 +0000 (15:05 -0300)]
linux: Simplify timer_gettime

With arch-syscall.h it can now assumes the existance of either
__NR_timer_gettime or __NR_time_gettime_time64.  The 32-bit time_t
support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify sched_rr_get_interval
Adhemerval Zanella [Fri, 10 Jul 2020 17:04:48 +0000 (14:04 -0300)]
linux: Simplify sched_rr_get_interval

With arch-syscall.h it can now assumes the existance of either
__NR_sched_rr_get_interval or __NR_sched_rr_get_interval_time64.
The 32-bit time_t support is now only build for
!__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify ppoll
Adhemerval Zanella [Fri, 10 Jul 2020 16:33:40 +0000 (13:33 -0300)]
linux: Simplify ppoll

With arch-syscall.h it can now assumes the existance of either
__NR_ppoll or __NR_ppoll_time64.  The 32-bit time_t support is now
only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify mq_timedsend
Adhemerval Zanella [Fri, 10 Jul 2020 14:15:42 +0000 (11:15 -0300)]
linux: Simplify mq_timedsend

 With arch-syscall.h it can now assumes the existance of either
__NR_mq_timedsend or __NR_mq_timedsend_time64.  The 32-bit
time_t support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify mq_timedreceive
Adhemerval Zanella [Fri, 10 Jul 2020 13:41:23 +0000 (10:41 -0300)]
linux: Simplify mq_timedreceive

With arch-syscall.h it can now assumes the existance of either
__NR_mq_timedreceive or __NR_mq_timedreceive_time64.  The 32-bit
time_t support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify clock_settime
Adhemerval Zanella [Fri, 10 Jul 2020 13:04:14 +0000 (10:04 -0300)]
linux: Simplify clock_settime

With arch-syscall.h it can now assumes the existance of either
__NR_clock_settime or __NR_clock_settime_time64.  The 32-bit
time_t support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify clock_nanosleep
Adhemerval Zanella [Fri, 10 Jul 2020 12:54:35 +0000 (09:54 -0300)]
linux: Simplify clock_nanosleep

With arch-syscall.h it can now assumes the existance of either
__NR_clock_nanosleep or __NR_clock_nanosleep_time64.  The 32-bit
time_t support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Simplify clock_gettime
Adhemerval Zanella [Fri, 10 Jul 2020 12:50:04 +0000 (09:50 -0300)]
linux: Simplify clock_gettime

With arch-syscall.h it can now assumes the existance of either
__NR_clock_gettime or __NR_clock_gettime_time64.  The 32-bit time_t
support is now only build for !__ASSUME_TIME64_SYSCALLS.

It also uses the time64-support functions to simplify it further.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

4 years agolinux: Simplify clock_adjtime
Adhemerval Zanella [Thu, 9 Jul 2020 19:42:14 +0000 (16:42 -0300)]
linux: Simplify clock_adjtime

With arch-syscall.h it can now assumes the existance of either
__NR_clock_adjtime or __NR_clock_adjtime_time64.  The 32-bit time_t
support is now only build for !__ASSUME_TIME64_SYSCALLS.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
4 years agolinux: Add helper function to optimize 64-bit time_t fallback support
Adhemerval Zanella [Thu, 20 Aug 2020 12:18:15 +0000 (09:18 -0300)]
linux: Add helper function to optimize 64-bit time_t fallback support

These helper functions are used to optimize the 64-bit time_t support on
configurations that requires support for 32-bit time_t fallback
(!__ASSUME_TIME64_SYSCALLS).  The idea is once the kernel advertises that
it does not have 64-bit time_t support, glibc will stop to try issue the
64-bit time_t syscall altogether.

For instance:

  #ifndef __NR_symbol_time64
  # define __NR_symbol_time64 __NR_symbol
  #endif
  int r;
  if (supports_time64 ())
    {
      r = INLINE_SYSCALL_CALL (symbol, ...);
      if (r == 0 || errno != ENOSYS)
        return r;

      mark_time64_unsupported ();
    }
  #ifndef __ASSUME_TIME64_SYSCALLS
  <32-bit fallback syscall>
  #endif
  return r;

On configuration with default 64-bit time_t this optimization should be
optimized away by the compiler resulting in no overhead.

4 years agoS390: Sync HWCAP names with kernel by adding aliases [BZ #25971]
Stefan Liebler [Fri, 21 Aug 2020 09:23:17 +0000 (11:23 +0200)]
S390: Sync HWCAP names with kernel by adding aliases [BZ #25971]

Unfortunately some HWCAP names like HWCAP_S390_VX differs between
kernel (see <kernel>/arch/s390/include/asm/elf.h) and glibc.

Therefore, those HWCAP names from kernel are now introduced as alias

4 years ago[vcstocl] Import ProjectQuirks from its own file
Siddhesh Poyarekar [Thu, 20 Aug 2020 03:15:02 +0000 (08:45 +0530)]
[vcstocl] Import ProjectQuirks from its own file

ProjectQuirks moved into its own file in gnulib because one cannot
import modules with hyphens in them.  Adjust the quirks file to
reflect this reality.

4 years agobuild-many-glibcs.py: Add a s390x -O3 glibc variant.
Stefan Liebler [Thu, 20 Aug 2020 08:51:42 +0000 (10:51 +0200)]
build-many-glibcs.py: Add a s390x -O3 glibc variant.

On s390x, gcc inlines more aggresive compared to other architectures.
This occaisionally leads to build warnings / errors.

Therefore this patch adds a s390x glibc variant with optimization.

There is the ccopts field which contain ABI options which are passed
to configure as CC / CXX.  Now there is also the cflags field which
contains non-ABI options like -g or -O. Those are passed to configure
as CFLAGS / CXXFLAGS.

Currently CC is passed to conformtest.py or linknamespace.py but not
the CFLAGS.

4 years agoFix namespace violation in stdio.h and sys/stat.h if build with optimization. [BZ...
Stefan Liebler [Thu, 20 Aug 2020 08:45:26 +0000 (10:45 +0200)]
Fix namespace violation in stdio.h and sys/stat.h if build with optimization. [BZ #26376]

If build with optimization, stdio.h and sys/stat.h are defining some inlining
functions.  This leads to test fails if glibc is build with the following
commands. (Note that the conformtests usually builds without optimization or
other CFLAGS):
<glibc>/configure CC="gcc -O3" --prefix=/usr
make
make subdirs=conform check
- FAIL: conform/XPG4/stdio.h/conform
- FAIL: conform/XPG42/stdio.h/conform
out-files:
...
PASSCOMBINED: Availability of variable optopt
PASSCOMBINED: Type of variable optopt
    Namespace violation: "getc_unlocked"
    Namespace violation: "getchar_unlocked"
    Namespace violation: "putc_unlocked"
    Namespace violation: "putchar_unlocked"
FAIL: Namespace of <stdio.h>
----------------------------------------------------------------------------
  Total number of tests   :  168
  Number of failed tests  :    1
  Number of xfailed tests :    0
  Number of skipped tests :    0

- FAIL: conform/POSIX2008/sys/stat.h/conform
out-file:
...
PASSCOMBINED: Availability of function utimensat
PASSCOMBINED: Type of function utimensat
    Namespace violation: "mknodat"
FAIL: Namespace of <sys/stat.h>
----------------------------------------------------------------------------
  Total number of tests   :   97
  Number of failed tests  :    1
  Number of xfailed tests :    0
  Number of skipped tests :    0

For getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked in stdio.h,
those are defined "# ifdef __USE_POSIX" instead of "#ifdef __USE_POSIX199506"
for the non-inlining declaration. See also
"Bug 20014 - stdio.h namespace for pre-threads POSIX"
(https://sourceware.org/bugzilla/show_bug.cgi?id=20014).

For mknodat in sys/stat.h, those are defined "# ifdef __USE_ATFILE" instead of
the additional guard "# if defined __USE_MISC || defined __USE_XOPEN_EXTENDED".

4 years agoAdd C2x BOOL_MAX and BOOL_WIDTH to limits.h.
Joseph Myers [Wed, 19 Aug 2020 22:46:41 +0000 (22:46 +0000)]
Add C2x BOOL_MAX and BOOL_WIDTH to limits.h.

C2x adds BOOL_MAX and BOOL_WIDTH macros to <limits.h>.  This patch
adds them to glibc's <limits.h> for the case when they aren't defined
by GCC's <limits.h>.

Tested for x86_64.

4 years agoUse MPC 1.2.0 in build-many-glibcs.py.
Joseph Myers [Wed, 19 Aug 2020 13:48:14 +0000 (13:48 +0000)]
Use MPC 1.2.0 in build-many-glibcs.py.

This patch makes build-many-glibcs.py use the new MPC 1.2.0 release.

Tested with build-many-glibcs.py (host-libraries, compilers and glibcs
builds).

4 years agoAdd new STATX_* constants from Linux 5.8 to bits/statx-generic.h.
Joseph Myers [Wed, 19 Aug 2020 13:47:37 +0000 (13:47 +0000)]
Add new STATX_* constants from Linux 5.8 to bits/statx-generic.h.

This patch adds the new STATX_MNT_ID, STATX_ATTR_MOUNT_ROOT and
STATX_ATTR_DAX macros from Linux 5.8 to glibc's bits/statx-generic.h.
(As with previous such changes, this only does anything if glibc is
being used with old kernel headers.)

A comment in the Linux kernel headers indicates that STATX_ALL is
deliberately not being changed.

Tested for x86_64.

4 years agoCorrect locking and cancellation cleanup in syslog functions (bug 26100)
Andreas Schwab [Tue, 23 Jun 2020 10:55:49 +0000 (12:55 +0200)]
Correct locking and cancellation cleanup in syslog functions (bug 26100)

Properly serialize the access to the global state shared between the
syslog functions, to avoid races in multithreaded processes.  Protect a
local allocation in the __vsyslog_internal function from leaking during
cancellation.

4 years agonptl: Handle NULL abstime [BZ #26394]
H.J. Lu [Sat, 15 Aug 2020 18:06:35 +0000 (11:06 -0700)]
nptl: Handle NULL abstime [BZ #26394]

Since abstime passed to pthread_{clock|timed}join_np may be NULL, convert
to 64 bit abstime only if abstime isn't NULL.

4 years agoUpdate build-many-glibcs.py for binutils ia64 obsoletion.
Joseph Myers [Thu, 13 Aug 2020 18:51:10 +0000 (18:51 +0000)]
Update build-many-glibcs.py for binutils ia64 obsoletion.

Since binutils has obsoleted ia64 support, use --enable-obsolete for
now when configuring binutils for ia64 in build-many-glibcs.py (which
requires adding support for architecture-specific binutils configure
options there).  As with other obsoletions, the removal of support for
ia64 in any of (binutils, GCC, Linux kernel) should imply its removal
from glibc.

Tested with build-many-glibcs.py for ia64-linux-gnu (compilers and
glibcs build).

4 years agoUpdate kernel version to 5.8 in tst-mman-consts.py.
Joseph Myers [Thu, 13 Aug 2020 18:50:24 +0000 (18:50 +0000)]
Update kernel version to 5.8 in tst-mman-consts.py.

This patch updates the kernel version in the test tst-mman-consts.py
to 5.8.  (There are no new MAP_* constants covered by this test in 5.8
that need any other header changes.)

Tested with build-many-glibcs.py.

4 years agoy2038: nptl: Convert pthread_{clock|timed}join_np to support 64 bit time
Lukasz Majewski [Mon, 20 Jul 2020 13:50:12 +0000 (15:50 +0200)]
y2038: nptl: Convert pthread_{clock|timed}join_np to support 64 bit time

The pthread_clockjoin_np and pthread_timedjoin_np have been converted to
support 64 bit time.

This change introduces new futex_timed_wait_cancel64 function in
./sysdeps/nptl/futex-internal.h, which uses futex_time64 where possible
and tries to replace low-level preprocessor macros from
lowlevellock-futex.h
The pthread_{timed|clock}join_np only accept absolute time. Moreover,
there is no need to check for NULL passed as *abstime pointer as
clockwait_tid() always passes struct __timespec64.

For systems with __TIMESIZE != 64 && __WORDSIZE == 32:
- Conversions between 64 bit time to 32 bit are necessary
- Redirection to __pthread_{clock|timed}join_np64 will provide support
  for 64 bit time

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Run-time tests:
- Run specific tests on ARM/x86 32bit systems (qemu):
  https://github.com/lmajewski/meta-y2038 and run tests:
  https://github.com/lmajewski/y2038-tests/commits/master

Above tests were performed with Y2038 redirection applied as well as without
to test the proper usage of both __pthread_{timed|clock}join_np64 and
__pthread_{timed|clock}join_np.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
4 years agoaarch64: update ulps.
Szabolcs Nagy [Thu, 13 Aug 2020 12:02:35 +0000 (13:02 +0100)]
aarch64: update ulps.

For new j0 test.

4 years agoS390: Regenerate ULPs.
Stefan Liebler [Wed, 12 Aug 2020 14:23:12 +0000 (16:23 +0200)]
S390: Regenerate ULPs.

Updates needed after new j0 test:
commit 9bfc225078219521439ec8b0f665915e769d40c2
math: Regenerate auto-libm-test-out-j0

4 years agomanual: Fix sigdescr_np and sigabbrev_np return type (BZ #26343)
Adhemerval Zanella [Sat, 8 Aug 2020 19:49:53 +0000 (16:49 -0300)]
manual: Fix sigdescr_np and sigabbrev_np return type (BZ #26343)

4 years agomath: Update x86_64 ulps
Adhemerval Zanella [Sat, 8 Aug 2020 19:43:11 +0000 (16:43 -0300)]
math: Update x86_64 ulps

From new j0 test.

4 years agomath: Regenerate auto-libm-test-out-j0
Adhemerval Zanella [Sat, 8 Aug 2020 19:41:40 +0000 (16:41 -0300)]
math: Regenerate auto-libm-test-out-j0

This is a missing bit for b7dd366dbe.

4 years agomanual: Put the istrerrorname_np and strerrordesc_np return type in braces
Adhemerval Zanella [Fri, 7 Aug 2020 20:14:49 +0000 (17:14 -0300)]
manual: Put the istrerrorname_np and strerrordesc_np return type in braces

Otherwise it is not rendered or indexed correctly.

4 years agoLinux: Use faccessat2 to implement faccessat (bug 18683)
Florian Weimer [Fri, 7 Aug 2020 20:06:59 +0000 (22:06 +0200)]
Linux: Use faccessat2 to implement faccessat (bug 18683)

This provides correct AT_EACCESS handling and also takes
Linux security modules into account.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
4 years agomanual: Fix strerrorname_np and strerrordesc_np return type (BZ #26343)
Adhemerval Zanella [Fri, 7 Aug 2020 19:49:59 +0000 (16:49 -0300)]
manual: Fix strerrorname_np and strerrordesc_np return type (BZ #26343)

4 years agomath: Fix inaccuracy of j0f for x >= 2^127 when sin(x)+cos(x) is tiny
Paul Zimmermann [Fri, 7 Aug 2020 19:14:53 +0000 (16:14 -0300)]
math: Fix inaccuracy of j0f for x >= 2^127 when sin(x)+cos(x) is tiny

Checked on x86_64-linux-gnu and i686-linux-gnu.

4 years agoUpdate syscall lists for Linux 5.8.
Joseph Myers [Fri, 7 Aug 2020 14:38:43 +0000 (14:38 +0000)]
Update syscall lists for Linux 5.8.

Linux 5.8 has one new syscall, faccessat2.  Update syscall-names.list
and regenerate the arch-syscall.h headers with build-many-glibcs.py
update-syscalls.

Tested with build-many-glibcs.py.

4 years agoUse Linux 5.8 in build-many-glibcs.py.
Joseph Myers [Fri, 7 Aug 2020 14:38:12 +0000 (14:38 +0000)]
Use Linux 5.8 in build-many-glibcs.py.

This patch makes build-many-glibcs.py use Linux 5.8.

Tested with build-many-glibcs.py (host-libraries, compilers and glibcs
builds).

4 years agohtl: Enable tst-cancelx?[45]
Samuel Thibault [Thu, 6 Aug 2020 23:38:27 +0000 (23:38 +0000)]
htl: Enable tst-cancelx?[45]

* nptl/{tst-cancel4-common.c, tst-cancel4-common.h, tst-cancel4.c,
tst-cancel5.c, tst-cancelx4.c, tst-cancelx5.c}: Move to sysdeps/pthread/
* nptl/Makefile: Move corresponding rules to...
* sysdeps/pthread/Makefile: ... here.

4 years agotst-cancel4: Make blocking on write more portable
Samuel Thibault [Thu, 6 Aug 2020 23:13:17 +0000 (01:13 +0200)]
tst-cancel4: Make blocking on write more portable

* nptl/tst-cancel4.c (tf_send, tf_sendto): Set socket buffer size after
connecting.

4 years agohurd: Add missing hidden def
Samuel Thibault [Thu, 6 Aug 2020 18:10:58 +0000 (20:10 +0200)]
hurd: Add missing hidden def

* sysdeps/mach/hurd/sched_gets.c (__sched_getscheduler): Add hidden def.

4 years agohurd: Rework sbrk
Samuel Thibault [Wed, 5 Aug 2020 21:48:58 +0000 (23:48 +0200)]
hurd: Rework sbrk

Making the brk start exactly at the end of the main application binary was
requiring to get it through the _end symbol, which does not work any more
with recent toolchains, and actually produces in libc.so a confusing
external _end symbol that produces odd results, see
https://sourceware.org/bugzilla/show_bug.cgi?id=23499

Trying to do so is quite outdated anyway with the tendency for address
randomization.

Using _end was also allowing to include the main binary data within
the RLIMIT_DATA, but this also seems outdated with dynamic library
loading, and nowadays' memory consumption via malloc and mmap rather than
statically-allocated data.

This adds a BRK_START macro in <vm_param.h> that just tells where we
want to start the brk, and thus removes the _end symbol.

* sysdeps/mach/hurd/i386/vm_param.h: New file.
* sysdeps/mach/hurd/brk.c: Use BRK_START as brk start instead of _end.
Also ignore __data_start.
* hurd/Versions: Remove _end symbol.
* sysdeps/mach/hurd/i386/libc.abilist: Remove _end symbol.

4 years agohurd: Implement basic sched_get/setscheduler
Samuel Thibault [Wed, 5 Aug 2020 21:46:14 +0000 (23:46 +0200)]
hurd: Implement basic sched_get/setscheduler

* sysdeps/mach/hurd/sched_gets.c: New file.
* sysdeps/mach/hurd/sched_sets.c: New file.

4 years agox86: Rename Intel CPU feature names
H.J. Lu [Wed, 5 Aug 2020 15:20:52 +0000 (08:20 -0700)]
x86: Rename Intel CPU feature names

Intel64 and IA-32 Architectures Software Developer’s Manual has changed
the following CPU feature names:

1. The CPU feature of Enhanced Intel SpeedStep Technology is renamed
from EST to EIST.
2. The CPU feature which supports Platform Quality of Service Monitoring
(PQM) capability is changed to Intel Resource Director Technology
(Intel RDT) Monitoring capability, i.e. PQM is renamed to RDT_M.
3. The CPU feature which supports Platform Quality of Service
Enforcement (PQE) capability is changed to Intel Resource Director
Technology (Intel RDT) Allocation capability, i.e. PQE is renamed to
RDT_A.

4 years agomanual: Fix some @code/@var formatting glitches chapter Date And Time
Florian Weimer [Mon, 9 Sep 2019 09:21:08 +0000 (11:21 +0200)]
manual: Fix some @code/@var formatting glitches chapter Date And Time

4 years agoCopy regex_internal.h from Gnulib
Paul Eggert [Wed, 5 Aug 2020 06:45:27 +0000 (23:45 -0700)]
Copy regex_internal.h from Gnulib

Sync this file from Gnulib, thus incorporating the following
fix for a bug with regexps with 16 or more subexpressions:
* posix/regex_internal.h (struct re_backref_cache_entry):
Use bitset_word_t as the type of eps_reachable_subexps_map,
instead of unsigned short int.  This fixes a bug I introduced
to glibc in 2005-09-28T17:33:18Z!drepper@redhat.com (glibc commit
2c05d33f90861d074dc12808dafbde30f487b1a0, BZ #1302).
Remove unused member 'unused'.

4 years agoCopy regex BITSET_WORD_BITS porting from Gnulib
Paul Eggert [Wed, 5 Aug 2020 06:39:20 +0000 (23:39 -0700)]
Copy regex BITSET_WORD_BITS porting from Gnulib

* posix/regex.c (__STDC_WANT_IEC_60559_BFP_EXT__):
Define, for ULONG_WIDTH.  This syncs regex.c from Gnujlib.
* posix/regex_internal.h (ULONG_WIDTH):
Use a more-portable fallback, from Gnulib.
(BITSET_WORD_BITS): Now defined in terms of ULONG_WIDTH.

4 years agoSync regex.h from Gnulib
Paul Eggert [Wed, 5 Aug 2020 06:24:03 +0000 (23:24 -0700)]
Sync regex.h from Gnulib

* posix/regex.h: Remove an ‘#ifndef _CRAY’ that hasn’t been needed
for years in Gnulib (and was needed only because of Gnulib).

4 years agoSync mktime.c from Gnulib
Paul Eggert [Wed, 5 Aug 2020 06:15:31 +0000 (23:15 -0700)]
Sync mktime.c from Gnulib

* time/mktime.c: Sync from Gnulib.
This micro-optimizes three division-related computations.

4 years agoSync intprops.h from Gnulib
Paul Eggert [Wed, 5 Aug 2020 05:58:58 +0000 (22:58 -0700)]
Sync intprops.h from Gnulib

* include/intprops.h: Sync from Gnulib.  This improves
performance of INT_MULTIPLY_WRAPV on recent GCC, which affects
glibc only in the support library.

4 years agoOpen master branch for glibc 2.33 development. glibc-2.32.9000
Carlos O'Donell [Wed, 5 Aug 2020 03:41:43 +0000 (23:41 -0400)]
Open master branch for glibc 2.33 development.

Happy hacking!

4 years agoPrepare for glibc 2.32 release. glibc-2.32
Carlos O'Donell [Wed, 5 Aug 2020 02:17:00 +0000 (22:17 -0400)]
Prepare for glibc 2.32 release.

Update version.h, features.h, and ChangeLog.old/ChangeLog.21.

4 years agoRegenerate configure scripts.
Carlos O'Donell [Wed, 5 Aug 2020 01:36:19 +0000 (21:36 -0400)]
Regenerate configure scripts.

4 years agoUpdate NEWS with bugs.
Carlos O'Donell [Wed, 5 Aug 2020 00:39:09 +0000 (20:39 -0400)]
Update NEWS with bugs.

4 years agoUpdate translations.
Carlos O'Donell [Wed, 5 Aug 2020 00:31:51 +0000 (20:31 -0400)]
Update translations.

Incorporate updates from translationproject.org.

4 years agoDon't mix linker error messages into edited scripts
Alan Modra [Wed, 29 Jul 2020 06:58:57 +0000 (16:28 +0930)]
Don't mix linker error messages into edited scripts

* Makerules (shlib.lds): Discard linker warning output.
(format.lds): Likewise.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agobenchtests/README update.
Paul Zimmermann [Tue, 4 Aug 2020 11:27:39 +0000 (13:27 +0200)]
benchtests/README update.

Improve documentation of the 'name' directive and the 'workload' mechanism.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoRISC-V: Update lp64d libm-test-ulps according to HiFive Unleashed
Maciej W. Rozycki [Tue, 4 Aug 2020 12:00:17 +0000 (13:00 +0100)]
RISC-V: Update lp64d libm-test-ulps according to HiFive Unleashed

Produced with HiFive Unleashed hardware using Linux 5.8-rc5 exactly and
GCC 10.0.1 20200426.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoaarch64: update NEWS about branch protection
Szabolcs Nagy [Wed, 29 Jul 2020 07:27:27 +0000 (08:27 +0100)]
aarch64: update NEWS about branch protection

After some discussions it seems the original news was not clear
and that it is valid to manually pass the branch protection flags
iff GCC target libs are built with them too. The main difference
between manually passing the flags and using the configure
option is that the latter also makes branch protection the
default in GCC which may not be desirable in some cases.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoAdd NEWS entry for CVE-2016-10228 (bug 19519)
Aurelien Jarno [Thu, 30 Jul 2020 08:07:33 +0000 (10:07 +0200)]
Add NEWS entry for CVE-2016-10228 (bug 19519)

4 years agopowerpc: Fix incorrect cache line size load in memset (bug 26332)
Florian Weimer [Mon, 3 Aug 2020 16:07:19 +0000 (18:07 +0200)]
powerpc: Fix incorrect cache line size load in memset (bug 26332)

__GLRO loaded the word after the requested variable on big-endian
PowerPC, where LOWORD is 4.  This can cause the memset implement
go wrong because the masking with the cache line size produces
wrong results, particularly if the loaded value happens to be 1.

The __GLRO macro is not used in any place where loading the lower
32-bit word of a 64-bit value is desired, so the +4 offset is always
wrong.

Fixes commit 18363b4f010da9ba459b13310b113ac0647c2fcc
("powerpc: Move cache line size to rtld_global_ro") and bug 26332.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoUpdate Nios II libm-test-ulps file.
Chung-Lin Tang [Mon, 3 Aug 2020 08:42:48 +0000 (01:42 -0700)]
Update Nios II libm-test-ulps file.

4 years agoMove NEWS entry for CVE-2020-1751 to the 2.31 section
Florian Weimer [Fri, 31 Jul 2020 10:07:06 +0000 (12:07 +0200)]
Move NEWS entry for CVE-2020-1751 to the 2.31 section

It was fixed in commit d93769405996dfc11d216ddbe415946617b5a494
("Fix array overflow in backtrace on PowerPC (bug 25423)"), which
went into glibc 2.31.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoNEWS: Deprecate weak libpthread symbols for single-threaded checks
Florian Weimer [Fri, 24 Jul 2020 14:50:38 +0000 (16:50 +0200)]
NEWS: Deprecate weak libpthread symbols for single-threaded checks

Recommend the new __libc_single_thread variable instead.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoNEWS: Deprecate nss_hesiod
Florian Weimer [Fri, 24 Jul 2020 14:46:23 +0000 (16:46 +0200)]
NEWS: Deprecate nss_hesiod

Storing user databases in DNS, without client-side DNSSEC validation,
is problematic from a security point of view.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agonptl: Zero-extend arguments to SETXID syscalls [BZ #26248]
H.J. Lu [Thu, 16 Jul 2020 10:37:10 +0000 (03:37 -0700)]
nptl: Zero-extend arguments to SETXID syscalls [BZ #26248]

nptl has

/* Opcodes and data types for communication with the signal handler to
   change user/group IDs.  */
struct xid_command
{
  int syscall_no;
  long int id[3];
  volatile int cntr;
  volatile int error;
};

 /* This must be last, otherwise the current thread might not have
     permissions to send SIGSETXID syscall to the other threads.  */
  result = INTERNAL_SYSCALL_NCS (cmdp->syscall_no, 3,
                                 cmdp->id[0], cmdp->id[1], cmdp->id[2]);

But the second argument of setgroups syscal is a pointer:

       int setgroups (size_t size, const gid_t *list);

But on x32, pointers passed to syscall must have pointer type so that
they will be zero-extended.  The kernel XID arguments are unsigned and
do not require sign extension.  Change xid_command to

struct xid_command
{
  int syscall_no;
  unsigned long int id[3];
  volatile int cntr;
  volatile int error;
};

so that all arguments are zero-extended.  A testcase is added for x32 and
setgroups returned with EFAULT when running as root without the fix.

4 years agoUse binutils 2.35 branch in build-many-glibcs.py.
Joseph Myers [Mon, 27 Jul 2020 14:55:10 +0000 (14:55 +0000)]
Use binutils 2.35 branch in build-many-glibcs.py.

This patch makes build-many-glibcs.py use binutils 2.35 branch.

Tested with build-many-glibcs.py (compilers and glibcs builds).

4 years agoaarch64: Use future HWCAP2_MTE in ifunc resolver
Szabolcs Nagy [Fri, 24 Jul 2020 11:37:23 +0000 (12:37 +0100)]
aarch64: Use future HWCAP2_MTE in ifunc resolver

Make glibc MTE-safe on systems where MTE is available. This allows
using heap tagging with an LD_PRELOADed malloc implementation that
enables MTE. We don't document this as guaranteed contract yet, so
glibc may not be MTE safe when HWCAP2_MTE is set (older glibcs
certainly aren't). This is mainly for testing and debugging.

The HWCAP flag is not exposed in public headers until Linux adds it
to its uapi. The HWCAP value reservation will be in Linux 5.9.

4 years agoUpdate x86-64 libm-test-ulps
Andreas K. Hüttel [Sat, 25 Jul 2020 09:36:00 +0000 (12:36 +0300)]
Update x86-64 libm-test-ulps

x86_64 Intel(R) Core(TM) i5-8265U
gcc (Gentoo 10.1.0-r2 p3) 10.1.0
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agoaarch64: Respect p_flags when protecting code with PROT_BTI
Szabolcs Nagy [Mon, 13 Jul 2020 10:28:18 +0000 (11:28 +0100)]
aarch64: Respect p_flags when protecting code with PROT_BTI

Use PROT_READ and PROT_WRITE according to the load segment p_flags
when adding PROT_BTI.

This is before processing relocations which may drop PROT_BTI in
case of textrels.  Executable stacks are not protected via PROT_BTI
either.  PROT_BTI is hardening in case memory corruption happened,
it's value is reduced if there is writable and executable memory
available so missing it on such memory is fine, but we should
respect the p_flags and should not drop PROT_WRITE.

4 years agoDisable warnings due to deprecated libselinux symbols used by nss and nscd
Arjun Shankar [Thu, 23 Jul 2020 10:20:38 +0000 (12:20 +0200)]
Disable warnings due to deprecated libselinux symbols used by nss and nscd

The SELinux API deprecated several symbols in its 3.1 release, including
security_context_t, matchpathcon, avc_init, and sidput, which are used in
makedb and nscd.  While the usage of these should eventually be replaced by
newer interfaces, this commit disables GCC warnings due to the use of the
above symbols.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
4 years agoRegenerate INSTALL for ARC port updates.
Carlos O'Donell [Thu, 23 Jul 2020 03:32:07 +0000 (23:32 -0400)]
Regenerate INSTALL for ARC port updates.

4 years agoUpdate libc.pot for 2.32 release.
Carlos O'Donell [Thu, 23 Jul 2020 03:28:05 +0000 (23:28 -0400)]
Update libc.pot for 2.32 release.

4 years agopowerpc: Fix POWER10 selection
Tulio Magno Quites Machado Filho [Tue, 21 Jul 2020 21:01:39 +0000 (18:01 -0300)]
powerpc: Fix POWER10 selection

Add a line that was missing from a previous commit.
Without increasing str, the null-byte is not validated, and
_dl_string_platform returns -1.

Fixes: d2ba3677da7a ("powerpc: Add support for POWER10")
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
4 years agopowerpc64le: guarantee a .gnu.attributes section [BZ #26220]
Paul E. Murphy [Wed, 8 Jul 2020 21:49:34 +0000 (16:49 -0500)]
powerpc64le: guarantee a .gnu.attributes section [BZ #26220]

Upstream GCC 11 development is now building the ibm128 runtime
support (in libgcc) without a .gnu.attributes section on ppc64le.
Ensure we have one to replace by building one ibm128 file in
libc and libm with attributes.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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