| Commit message (Collapse) | Author | Age | Files | Lines |
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Currently glibc uses in_time_t_range to detects time_t overflow,
and if it occurs fallbacks to 64 bit syscall version.
The function name is confusing because internally time_t might be
either 32 bits or 64 bits (depending on __TIMESIZE).
This patch refactors the in_time_t_range by replacing it with
in_int32_t_range for the case to check if the 64 bit time_t syscall
should be used.
The in_time_t range is used to detect overflow of the
syscall return value.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
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We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date. Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.
Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions. These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.
The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively. These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:
https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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For !__ASSUME_TIME64_SYSCALLS there is no need to issue a 64-bit syscall
if the provided timeout fits in a 32-bit one. The 64-bit usage should
be rare since the timeout is a relative one. This also avoids the need
to use supports_time64() (which breaks the usage case of live migration
like CRIU or similar).
Checked on i686-linux-gnu on a 4.15 kernel and on a 5.11 kernel
(with and without --enable-kernel=5.1) and on x86_64-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
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commit a92f4e6299fe0e3cb6f77e79de00817aece501ce
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Jul 6 13:27:12 2020 -0300
linux: Add time64 pselect support
changed pselect.c to
r = SYSCALL_CANCEL (pselect6_time64, nfds, readfds, writefds, exceptfds,
timeout,
((__syscall_ulong_t[]){ (uintptr_t) sigmask,
__NSIG_BYTES }));
which doesn't work with x32's ARGIFY and data passed to syscall isn't
initialized with sigmask and __NSIG_BYTES. Change to
__syscall_ulong_t data[2] =
{
(uintptr_t) sigmask, __NSIG_BYTES
};
r = SYSCALL_CANCEL (pselect6_time64, nfds, readfds, writefds, exceptfds,
timeout, data);
fixes [BZ #26606].
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The syscall __NR_pselect6_time64 (32-bit) or __NR_pselect6 (64-bit)
is used as default. For architectures with __ASSUME_TIME64_SYSCALLS
the 32-bit fallback uses __NR_pselec6.
To accomodate microblaze missing pselect6 support on kernel older
than 3.15 the fallback is moved to its own function to the microblaze
specific implementation can override it.
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>
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The __NSIG_WORDS value is based on minimum number of words to hold
the maximum number of signals supported by the architecture.
This patch also adds __NSIG_BYTES, which is the number of bytes
required to represent the supported number of signals. It is used in
syscalls which takes a sigset_t.
Checked on x86_64-linux-gnu and i686-linux-gnu.
Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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The generic pselect implementation has the very specific race condition
that motived the creation of the pselect syscall (no atomicity in
signal mask set/reset). Using it as generic implementation is
counterproductive Also currently only microblaze uses it as fallback
when used on kernel prior 3.15.
This patch moves the generic implementation to a microblaze specific
one, sets the generic internal as a ENOSYS, and cleanups the Linux
generic implementation.
The microblaze implementation mimics the previous Linux generic one,
where it either uses pselect6 directly if __ASSUME_PSELECT or a
first try pselect6 then the fallback otherwise.
Checked on x86_64-linux-gnu and microblaze-linux-gnu.
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Nothing defines CALL_PSELECT6 in the current tree, so remove it.
Tested with:
- make PARALLELMFLAGS="-j8" && make xcheck PARALLELMFLAGS="-j8" (x86_64)
- scripts/build-many-glibcs.py
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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This patch changes the way cancellation entrypoints are defined to
instead call the macro SYSCALL_CANCEL. An usual cnacellation definition
is defined as:
if (SINGLE_THREAD_P)
return INLINE_SYSCALL (syscall, NARGS, args...)
int oldtype = LIBC_CANCEL_ASYNC ();
return INLINE_SYSCALL (syscall, NARGS, args...)
LIBC_CANCEL_RESET (oldtype);
And it is rewrited as just:
SYSCALL_CANCEL (syscall, args...)
The idea is to remove LIBC_CANCEL_ASYNC/LIBC_CANCEL_RESET explicit
usage.
Tested on i386, x86_64, powerpc32, powerpc64le, arm, and aarch64.
* sysdeps/unix/sysdep.h [SYSCALL_CANCEL]: New macro: define
cancellable syscalls.
(SYS_ify): Add guard to no redefine it.
(INLINE_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/accept4.c (accept4): Remove
LIBC_CANCEL_ASYNC/INLINE_SYSCALL/LIBC_CANCEL_RESET and use
SYSCALL_CANCEL instead.
* sysdeps/unix/sysv/linux/alpha/fdatasync.c (__fdatasync): Likewise.
* sysdeps/unix/sysv/linux/arm/pread.c (__libc_pread): Likewise.
* sysdeps/unix/sysv/linux/arm/pread64.c (__libc_pread64): Likewise.
* sysdeps/unix/sysv/linux/arm/pwrite.c (__libc_pwrite): Likewise.
* sysdeps/unix/sysv/linux/arm/pwrite64.c (__libc_pwrite64): Likewise.
* sysdeps/unix/sysv/linux/epoll_pwait.c (epoll_pwait): Likewise.
* sysdeps/unix/sysv/linux/fallocate.c (fallocate): Likewise.
* sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Likewise.
* sysdeps/unix/sysv/linux/generic/open.c (__libc_open): Likewise.
* sysdeps/unix/sysv/linux/generic/open64.c (__libc_open64): Likewise.
* sysdeps/unix/sysv/linux/generic/pause.c (__libc_pause): Likewise.
* sysdeps/unix/sysv/linux/generic/poll.c (__poll): Likewise.
* sysdeps/unix/sysv/linux/generic/recv.c (__libc_recv): Likewise.
* sysdeps/unix/sysv/linux/generic/select.c (__select): Likewise.
* sysdeps/unix/sysv/linux/generic/send.c (__libc_send): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c (__libc_pread):
Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c
(__libc_pread64): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c
(__libc_preadv): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c
(__libc_readv64): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c
(__libc_pwrite): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c
(__libc_pwrite64): Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c
(__libc_pwritev): Likewise.
* sysdeps/sysv/linux/generic/wordsize-32/pwritev64.c
(__libc_pwritev64): Likewise.
* sysdeps/unix/sysv/linux/i386/fcntl.c (__libc_fcntl): Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c
(sync_file_range): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c (fallocate):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c (fallocate64):
Likewise.
* sysdeps/unix/sysv/linux/mips/pread.c (__libc_pread): Likewise.
* sysdeps/unix/sysv/linux/mips/pread64.c (__libc_pread64): Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite.c (__libc_pwrite): Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite64.c (__libc_pwrite64): Likewise.
* sysdeps/unix/sysv/linux/msgrcv.c (__libc_msgrcv): Likewise.
* sysdeps/unix/sysv/linux/msgsnd.c (__libc_msgsnd): Likewise.
* sysdeps/unix/sysv/linux/open64.c (__libc_open64): Likewise.
* sysdeps/unix/sysv/linux/openat.c (__libc_openat): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c (__libc_pread):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c
(__libc_read64): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c (__libc_write):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c (__libc_write64):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c (__libc_fcntl):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c (__libc_pread):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c
(__libc_pread64): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c (__libc_pwrite):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c
(__libc_pwrite64): Likewise.
* sysdeps/sysv/linux/powerpc/powerpc64/sync_file_range.c
(sync_file_range): Likewise.
* sysdeps/unix/sysv/linux/ppoll.c (ppoll): Likewise.
* sysdeps/unix/sysv/linux/pread.c (__libc_pread): Likewise.
* sysdeps/unix/sysv/linux/pread64.c (__libc_pread64): Likewise.
* sysdeps/unix/sysv/linux/preadv.c (__libc_preadv): Likewise.
* sysdeps/unix/sysv/linux/pselect.c (__pselect): Likewise.
* sysdeps/unix/sysv/linux/pwrite.c (__libc_pwrite): Likewise.
* sysdeps/unix/sysv/linux/pwrite64.c (__libc_pwrite64): Likewise.
* sysdeps/unix/sysv/linux/pwritev.c (PWRITEV): Likewise.
* sysdeps/unix/sysv/linux/readv.c (__libc_readv): Likewise.
* sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Likewise.
* sysdeps/unix/sysv/linux/sendmmsg.c (sendmmsg): Likewise.
* sysdeps/unix/sysv/linux/sh/pread.c (__libc_pread): Likewise.
* sysdeps/unix/sysv/linux/sh/pread64.c (__libc_pread64): Likewise.
* sysdeps/unix/sysv/linux/sh/pwrite.c (__libc_pwrite): Likewise.
* sysdeps/unix/sysv/linux/sh/pwrite64.c (__libc_pwrite64): Likewise.
* sysdeps/unix/sysv/linux/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Likewise.
* sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c (__libc_msgrcv):
Likewise.
* sysdeps/unix/sysv/linux/sync_file_range.c (sync_file_range):
Likewise.
* sysdeps/unix/sysv/linux/tcdrain.c (__libc_tcdrain): Likewise.
* sysdeps/unix/sysv/linux/timer_routines.c (timer_helper_thread):
Likewise.
* sysdeps/unix/sysv/linux/wait.c (__libc_wait): Likewise.
* sysdeps/unix/sysv/linux/waitid.c (__waitid): Likewise.
* sysdeps/unix/sysv/linux/waitpid.c (__libc_waitpid): Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/fallocate.c (fallocate):
Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/preadv.c (preadv): Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/pwritev.c (pwritev): Likewise.
* sysdeps/unix/sysv/linux/writev.c (__libc_writev): Likewise.
* sysdeps/unix/sysv/linux/x86_64/recv.c (__libc_recv): Likewise.
* sysdeps/unix/sysv/linux/x86_64/send.c (__libc_send): Likewise.
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Continuing the removal of unused __libc_* function names, this patch
removes the __libc_pselect alias.
Tested for x86_64 that installed stripped shared libraries are
unchanged by this patch.
* misc/pselect.c [!__pselect] (__libc_pselect): Remove alias.
* sysdeps/unix/sysv/linux/pselect.c [__NR_pselect6]
(__libc_pselect): Likewise.
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__ASSUME_PPOLL, __ASSUME_ATFCTS, __ASSUME_SET_ROBUST_LIST,
__ASSUME_UTIMENSAT, __ASSUME_FALLOCATE): Update per-arch conditions
when each feature was introduced.
* sysdeps/unix/sysv/linux/dl-vdso.c: Don't include dl-hash.h.
* sysdeps/unix/sysv/linux/dl-vdso.h: Don't include dl-hash.h if NDEBUG.
(CHECK_HASH): New macro.
(PREPARE_VERSION): Use it.
* sysdeps/unix/sysv/linux/pselect.c (__generic_pselect): Only provide
prototype if not __ASSUME_PSELECT.
* sysdeps/unix/sysv/linux/ppoll.c (__generic_ppoll): Only provide
prototype if not __ASSUME_PPOLL.
* sysdeps/unix/sysv/linux/dl-osinfo.h (ROUND): #undef after use.
* sysdeps/unix/clock_settime.c (freq, __pthread_clock_settime,
hp_timing_settime): Don't define or declare if HANDLED_CPUTIME
is defined.
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system call code to be redefined in macro CALL_PSELECT6.
* sysdeps/unix/sysv/linux/i386/Makefile [subdir=misc]
(sysdep_routines): Add call_pselect6.
* sysdeps/unix/sysv/linux/i386/call_pselect6.c: New file.
* sysdeps/unix/sysv/linux/i386/pselect.c: New file.
* misc/Makefile (tests): Add tst-pselect.
* misc/tst-pselect.c: New file.
* sysdeps/unix/sysv/linux/pselect.c: Fix typo in declaration.
* sysdeps/unix/sysv/linux/xmknodat.c (__xmknodat): Cast k_dev
value to unsigned int to match kernel.
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* sysdeps/unix/sysv/linux/faccessat.c: Use syscall if available.
* sysdeps/unix/sysv/linux/fchmodat.c: Likewise.
* sysdeps/unix/sysv/linux/fchownat.c: Likewise.
* sysdeps/unix/sysv/linux/futimesat.c: Likewise.
* sysdeps/unix/sysv/linux/linkat.c: Likewise.
* sysdeps/unix/sysv/linux/mkdirat.c: Likewise.
* sysdeps/unix/sysv/linux/openat.c: Likewise.
* sysdeps/unix/sysv/linux/readlinkat.c: Likewise.
* sysdeps/unix/sysv/linux/renameat.c: Likewise.
* sysdeps/unix/sysv/linux/symlinkat.c: Likewise.
* sysdeps/unix/sysv/linux/unlinkat.c: Likewise.
* sysdeps/unix/sysv/linux/xmknodat.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c: Likewise.
* sysdeps/unix/sysv/linux/kernel-features.h: Define __ASSUME_PSELECT,
__ASSUME_PPOLL, and __ASSUME_ATFCTS if possible.
* io/ppoll.c: New file.
* io/Makefile (routines): Add ppoll.
(CFLAGS-ppoll.c): Define.
* io/Versions: Export ppoll for GLIBC_2.4.
* io/sys/poll.h: Declare ppoll.
* sysdeps/unix/sysv/linux/ppoll.c: New file.
* misc/pselect.c: Make it possible to include this file to define
the generic code as a static function.
* sysdeps/unix/sysv/linux/pselect.c: New file.
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