Commit Graph

39150 Commits

Author SHA1 Message Date
Adhemerval Zanella
e1226cdc6b linux: Use compile_c_snippet to check linux/mount.h availability
Checked on x86_64-linux-gnu.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-08-12 09:15:23 -03:00
Adhemerval Zanella
c68b6044bc linux: Mimic kernel defition for BLOCK_SIZE
To avoid possible warnings if the kernel header is included before
sys/mount.h.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-08-12 09:15:21 -03:00
Adhemerval Zanella
1542019b69 linux: Use compile_c_snippet to check linux/pidfd.h availability
Instead of tying to a specific kernel version.

Checked on x86_64-linux-gnu.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-08-12 09:15:11 -03:00
Adhemerval Zanella
841afa116e glibcextract.py: Add compile_c_snippet
It might be used on tests to check if a snippet build with the provided
compiler and flags.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-08-12 09:15:03 -03:00
caiyinyu
1c9bc1b6e5 LoongArch: Add pointer mangling support. 2022-08-12 09:30:56 +08:00
Wilco Dijkstra
12182ba18d AArch64: Fix typo in sve configure check (BZ# 29394)
Fix a typo in the SVE configure check. This fixes [BZ# 29394].
2022-08-11 17:52:00 +01:00
Wilco Dijkstra
c51c483d2b libio: Improve performance of IO locks
Improve performance of recursive IO locks by adding a fast path for
the single-threaded case. To reduce the number of memory accesses for
locking/unlocking, only increment the recursion counter if the lock
is already taken.

On Neoverse V1, a microbenchmark with many small freads improved by
2.9x. Multithreaded performance improved by 2%.

Reviewed-by: Cristian Rodríguez  <crrodriguez@opensuse.org>
2022-08-11 16:47:45 +01:00
Stefan Liebler
11f09947f3 tst-process_madvise: Check process_madvise-syscall support.
So far this test checks if pidfd_open-syscall is supported,
which was introduced with linux 5.3.

The process_madvise-syscall was introduced with linux 5.10.
Thus you'll get FAILs if you are running a kernel in between.

This patch adds a check if the first process_madvise-syscall
returns ENOSYS and in this case will fail with UNSUPPORTED.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-08-11 12:21:05 +02:00
Fangrui Song
61d2066c19 elf.h: Add ELFCOMPRESS_ZSTD
From the approved generic ABI proposal
https://groups.google.com/g/generic-abi/c/satyPkuMisk
("Add new ch_type value: ELFCOMPRESS_ZSTD").

Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-08-10 21:46:09 -07:00
Florian Weimer
2ed26bca99 inet: Turn __ivaliduser into a compatibility symbol
It is not declared in a header file, and as the comment indicates,
it is not expected to be used.
2022-08-10 08:40:15 +02:00
Noah Goldstein
312ded0d63 x86: Fix #define STRCPY guard in strcpy-sse2.S
`#ifndef STPCPY` is incorrect for checking if `STRCPY` is already
defined.  It doesn't end up mattering as the whole check is
guarded by `#if IS_IN (libc)` but is incorrect none the less.
2022-08-09 17:00:03 +08:00
Noah Goldstein
483cfe1a6a elf: Replace strcpy call with memcpy [BZ #29454]
GCC normally does this optimization for us in
strlen_pass::handle_builtin_strcpy but only for optimized
build. To avoid needing to include strcpy.S in the rtld build to
support the debug build, just do the optimization by hand.
2022-08-09 17:00:03 +08:00
Kito Cheng
8bc3f94a06 soft-fp: Add fixhf[uns][di|si] and float[uns][di|si]hf
Add more IEEE half conversion routines:

- Convert 32-bit/64-bit integer to IEEE half.
- Convert IEEE half to 32-bit/64-bit integer.

They are required by RISC-V _Float16 support, tested with RISC-V GCC.
2022-08-08 11:28:40 -03:00
Adhemerval Zanella
26a3499cdb i386: Use cmpl instead of cmp
Clang cannot assemble cmp in the AT&T dialect mode.
2022-08-05 09:28:39 -03:00
Adhemerval Zanella
1ed5869c4c i386: Use fldt instead of fld on e_logl.S
Clang cannot assemble fldt in the AT&T dialect mode.
2022-08-05 09:28:33 -03:00
Fangrui Song
525ca33a61 i386: Replace movzx with movzbl
Similar to 6720d36b66 for x86-64.

Clang cannot assemble movzx in the AT&T dialect mode.  Change movzx to
movzbl, which follows the AT&T dialect and is used elsewhere in the
file.
2022-08-04 14:06:50 -07:00
Florian Weimer
ed0185e412 dlfcn: Pass caller pointer to static dlopen implementation (bug 29446)
Fixes commit 0c1c3a771e ("dlfcn: Move
dlopen into libc").
2022-08-04 17:54:48 +02:00
Florian Weimer
6c93af6b45 malloc: Correct the documentation of the top_pad default
DEFAULT_TOP_PAD is defined as 131072 in
sysdeps/generic/malloc-machine.h.
2022-08-04 17:20:48 +02:00
Adhemerval Zanella
3698f5a9dd i386: Remove RELA support
Now that prelink is not support, there is no need to keep supporting
rela for non bootstrap.
2022-08-04 10:03:46 -03:00
Adhemerval Zanella
c3f5682215 arm: Remove RELA support
Now that prelink is not support, there is no need to keep supporting
rela for non bootstrap.
2022-08-04 10:03:46 -03:00
Adhemerval Zanella
36676f5e5d Remove ldd libc4 support
The older libc versions are obsolete for over twenty years now.
2022-08-04 10:03:45 -03:00
Lucas A. M. Magalhaes
8ee878592c Assume only FLAG_ELF_LIBC6 suport
The older libc versions are obsolete for over twenty years now.
This patch removes the special flags for libc5 and libc4 and assumes
that all libraries cached are libc6 compatible and use FLAG_ELF_LIBC6.

Checked with a build for all affected architectures.

Co-authored-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-04 09:09:48 -03:00
Adhemerval Zanella
5a57ad23ba Remove left over LD_LIBRARY_VERSION usages
The environment variable was removed by
d2db60d8d8.
2022-08-04 09:09:48 -03:00
Florian Weimer
8fabe0e632 Linux: Remove exit system call from _exit
exit only terminates the current thread, not the whole process, so it
is the wrong fallback system call in this context.  All supported
Linux versions implement the exit_group system call anyway.
2022-08-04 06:17:50 +02:00
caiyinyu
3e83843637 LoongArch: Add vdso support for gettimeofday. 2022-08-04 09:19:36 +08:00
Joseph Myers
085030b957 Update kernel version to 5.19 in header constant tests
This patch updates the kernel version in the tests tst-mman-consts.py,
tst-mount-consts.py and tst-pidfd-consts.py to 5.18.  (There are no
new constants covered by these tests in 5.19, or in 5.17 or 5.18 in
the case of tst-mount-consts.py that previously used version 5.16,
that need any other header changes.)

Tested with build-many-glibcs.py.
2022-08-03 16:31:58 +00:00
Florian Weimer
9001cb1102 assert: Do not use stderr in libc-internal assert
Redirect internal assertion failures to __libc_assert_fail, based on
based on __libc_message, which writes directly to STDERR_FILENO
and calls abort.  Also disable message translation and reword the
error message slightly (adjusting stdlib/tst-bz20544 accordingly).

As a result of these changes, malloc no longer needs its own
redefinition of __assert_fail.

__libc_assert_fail needs to be stubbed out during rtld dependency
analysis because the rtld rebuilds turn __libc_assert_fail into
__assert_fail, which is unconditionally provided by elf/dl-minimal.c.

This change is not possible for the public assert macro and its
__assert_fail function because POSIX requires that the diagnostic
is written to stderr.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-03 11:43:04 +02:00
Florian Weimer
68e036f27f nptl: Remove uses of assert_perror
__pthread_sigmask cannot actually fail with valid pointer arguments
(it would need a really broken seccomp filter), and we do not check
for errors elsewhere.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-03 11:42:49 +02:00
Florian Weimer
cca9684f2d stdio: Clean up __libc_message after unconditional abort
Since commit ec2c1fcefb ("malloc:
Abort on heap corruption, without a backtrace [BZ #21754]"),
__libc_message always terminates the process.  Since commit
a289ea09ea ("Do not print backtraces
on fatal glibc errors"), the backtrace facility has been removed.
Therefore, remove enum __libc_message_action and the action
argument of __libc_message, and mark __libc_message as _No_return.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-03 11:42:39 +02:00
Joseph Myers
fccadcdf5b Update syscall lists for Linux 5.19
Linux 5.19 has no new syscalls, but enables memfd_secret in the uapi
headers for RISC-V.  Update the version number in syscall-names.list
to reflect that it is still current for 5.19 and regenerate the
arch-syscall.h headers with build-many-glibcs.py update-syscalls.

Tested with build-many-glibcs.py.
2022-08-02 21:05:07 +00:00
Joseph Myers
a3393b3380 Use Linux 5.19 in build-many-glibcs.py
This patch makes build-many-glibcs.py use Linux 5.19.

Tested with build-many-glibcs.py (host-libraries, compilers and glibcs
builds).
2022-08-02 14:09:24 +00:00
Arjun Shankar
9c443ac455 socket: Check lengths before advancing pointer in CMSG_NXTHDR
The inline and library functions that the CMSG_NXTHDR macro may expand
to increment the pointer to the header before checking the stride of
the increment against available space.  Since C only allows incrementing
pointers to one past the end of an array, the increment must be done
after a length check.  This commit fixes that and includes a regression
test for CMSG_FIRSTHDR and CMSG_NXTHDR.

The Linux, Hurd, and generic headers are all changed.

Tested on Linux on armv7hl, i686, x86_64, aarch64, ppc64le, and s390x.

[BZ #28846]

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-08-02 11:10:25 +02:00
Andreas Schwab
521d540562 Don't use unsupported format string in ld.so (bug 29427)
The dynamic loader does not support printf format strings that contain a
literal field width or precision, they have to be specified indirectly.
2022-08-02 10:24:21 +02:00
Samuel Thibault
70ff58ced4 htl: Let pthread_self and cancellability called early
When applications redirect some functions they might get called before
libpthread is fully initialized.  They may still expected pthread_self
and cancellable functions to work, so cope with such calls in that
situation.
2022-08-02 00:00:03 +02:00
Adhemerval Zanella
c622ac1b86 stdlib: Simplify arc4random_uniform
It uses the bitmask with rejection [1], which calculates a mask
being the lowest power of two bounding the request upper bound,
successively queries new random values, and rejects values
outside the requested range.

Performance-wise, there is no much gain in trying to conserve
bits since arc4random is wrapper on getrandom syscall.  It should
be cheaper to just query a uint32_t value.  The algorithm also
avoids modulo and divide operations, which might be costly
depending of the architecture.

[1] https://www.pcg-random.org/posts/bounded-rands.html

Reviewed-by: Yann Droneaud <ydroneaud@opteya.com>
2022-08-01 14:37:24 -03:00
Florian Weimer
7187efd0aa malloc: Use __getrandom_nocancel during tcache initiailization
Cancellation currently cannot happen at this point because dlopen
as used by the unwind link always performs additional allocations
for libgcc_s.so.1, even if it has been loaded already as a dependency
of the main executable.  But it seems prudent not to rely on this
quirk.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-01 15:50:09 +02:00
Florian Weimer
032712621f Remove spurious references to _dl_open_hook
_dl_open_hook was removed in commit 466c1ea15f
("dlfcn: Rework static dlopen hooks").

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-01 15:50:05 +02:00
H.J. Lu
e03f5ccd6c wcsmbs: Add missing test-c8rtomb/test-mbrtoc8 dependency
Make test-c8rtomb.out and test-mbrtoc8.out depend on $(gen-locales) for

  xsetlocale (LC_ALL, "de_DE.UTF-8");
  xsetlocale (LC_ALL, "zh_HK.BIG5-HKSCS");

Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2022-08-01 09:48:27 -03:00
Tom Honermann
825f84f133 stdlib: Suppress gcc diagnostic that char8_t is a keyword in C++20 in uchar.h.
gcc 13 issues the following diagnostic for the uchar.h header when the
-Wc++20-compat option is enabled in C++ modes that do not enable char8_t
as a builtin type (C++17 and earlier by default; subject to _GNU_SOURCE
and the gcc -f[no-]char8_t option).
  warning: identifier ‘char8_t’ is a keyword in C++20 [-Wc++20-compat]
This change modifies the uchar.h header to suppress the diagnostic through
the use of '#pragma GCC diagnostic' directives for gcc 10 and later (the
-Wc++20-compat option was added in gcc version 10).  Unfortunately, a bug
in gcc currently prevents those directives from having the intended effect
as reported at https://gcc.gnu.org/PR106423.  A patch for that issue has
been submitted and is available in the email thread archive linked below.
  https://gcc.gnu.org/pipermail/gcc-patches/2022-July/598736.html
2022-08-01 09:39:07 -03:00
Carlos O'Donell
5fded9c445 Open master branch for glibc 2.37 development 2022-07-30 15:34:51 -04:00
Carlos O'Donell
c804cd1c00 Create ChangeLog.old/ChangeLog.25. 2022-07-29 18:03:09 -04:00
Carlos O'Donell
f94b70bd3a Prepare for glibc 2.36 release.
Update version.h, and include/features.h.
2022-07-29 17:59:01 -04:00
Carlos O'Donell
7a52dfab02 Update install.texi, and regenerate INSTALL. 2022-07-29 17:51:16 -04:00
Carlos O'Donell
90d8f0dc29 Update NEWS bug list. 2022-07-29 17:49:20 -04:00
Carlos O'Donell
da3b9f4451 Update libc.pot for 2.36 release. 2022-07-29 16:41:57 -04:00
Mark Wielaard
325ba824b0 tst-pidfd.c: UNSUPPORTED if we get EPERM on valid pidfd_getfd call
pidfd_getfd can fail for a valid pidfd with errno EPERM for various
reasons in a restricted environment. Use FAIL_UNSUPPORTED in that case.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2022-07-29 18:52:12 +02:00
Adhemerval Zanella
35363b53ce stdlib: Tuned down tst-arc4random-thread internal parameters
With new arc4random implementation, the internal parameters might
require a lot of runtime and/or trigger some contention on older
kernels (which might trigger spurious timeout failures).

Also, since we are now testing getrandom entropy instead of an
userspace RNG, there is no much need to extensive testing.

With this change the tst-arc4random-thread goes from about 1m to
5s on a Ryzen 9 with 5.15.0-41-generic.

Checked on x86_64-linux-gnu.

Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
2022-07-29 09:19:00 -03:00
caiyinyu
bce0218d9a LoongArch: Add greg_t and gregset_t. 2022-07-29 09:15:21 +08:00
caiyinyu
033e76ea9c LoongArch: Fix VDSO_HASH and VDSO_NAME. 2022-07-29 09:15:21 +08:00
Darius Rad
7c5db7931f riscv: Update rv64 libm test ulps
Generated on a Microsemi Polarfire Icicle Kit running Linux version
5.15.32.  Same ULPs were also produced on QEMU 5.2.0 running Linux
5.18.0.
2022-07-27 10:50:20 -03:00