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It only adds a small overhead for unaligned inputs (which should not
be common) and unify the code.
Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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Replace atomic_increment and atomic_increment_val with atomic_fetch_add_relaxed.
One case in sem_post.c uses release semantics (see comment above it).
The others are simple counters and do not protect any shared data from
concurrent accesses.
Passes regress on AArch64.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Replace atomic_decrement and atomic_decrement_val with
atomic_fetch_add_relaxed.
Reviewed-by: DJ Delorie <dj@redhat.com>
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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 the legacy ABI with supports 32-bit time_t it calls the 64-bit
time directly, since the LFS symbols calls the 64-bit time_t ones
internally.
Checked on i686-linux-gnu and 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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It replaces the internal usage of __{f,l}xstat{at}{64} with the
__{f,l}stat{at}{64}. It should not change the generate code since
sys/stat.h explicit defines redirections to internal calls back to
xstat* symbols.
Checked with a build for all affected ABIs. I also check on
x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
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The nscd/nscd_helper.c uses __clock_gettime to get current time and on this
basis calculate the relative timeout for poll.
By using __clock_gettime64 on systems with __WORDSIZE == 32 && __TIMESIZE != 64
the timeout is correctly calculated after time_t overflow.
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As for gettimeofday, time will be implemented based on clock_gettime
on all platforms and internal code should use clock_gettime
directly. In addition to removing a layer of indirection, this will
allow us to remove the PLT-bypass gunk for gettimeofday.
The changed code always assumes __clock_gettime (CLOCK_REALTIME)
or __clock_gettime (CLOCK_REALTIME_COARSE) (for Linux case) cannot
fail, using the same rationale for gettimeofday change. And internal
helper was added (time_now).
Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
powerpc64-linux-gnu, and powerpc-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
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Since gettimeofday will shortly be implemented in terms of
clock_gettime on all platforms, internal code should use clock_gettime
directly; in addition to removing a layer of indirection, this will
allow us to remove the PLT-bypass gunk for gettimeofday. (We can't
quite do that yet, but it'll be coming later in this patch series.)
In many cases, the changed code does fewer conversions.
The changed code always assumes __clock_gettime (CLOCK_REALTIME)
cannot fail. Most of the call sites were assuming gettimeofday could
not fail, but a few places were checking for errors. POSIX says
clock_gettime can only fail if the clock constant is invalid or
unsupported, and CLOCK_REALTIME is the one and only clock constant
that's required to be supported. For consistency I grepped the entire
source tree for any other places that checked for errors from
__clock_gettime (CLOCK_REALTIME), found one, and changed it too.
(For the record, POSIX also says gettimeofday can never fail.)
(It would be nice if we could declare that GNU systems will always
support CLOCK_MONOTONIC as well as CLOCK_REALTIME; there are several
places where we are using CLOCK_REALTIME where _MONOTONIC would be
more appropriate, and/or trying to use _MONOTONIC and then falling
back to _REALTIME. But the Hurd doesn't support CLOCK_MONOTONIC yet,
and it looks like adding it would involve substantial changes to
gnumach's internals and API. Oh well.)
A few Hurd-specific files were changed to use __host_get_time instead
of __clock_gettime, as this seemed tidier. We also assume this cannot
fail. Skimming the code in gnumach leads me to believe the only way
it could fail is if __mach_host_self also failed, and our
Hurd-specific code consistently assumes that can't happen, so I'm
going with that.
With the exception of support/support_test_main.c, test cases are not
modified, mainly because I didn't want to have to figure out which
test cases were testing gettimeofday specifically.
The definition of GETTIME in sysdeps/generic/memusage.h had a typo and
was not reading tv_sec at all. I fixed this. It appears nobody has been
generating malloc traces on a machine that doesn't have a superseding
definition.
There are a whole bunch of places where the code could be simplified
by factoring out timespec subtraction and/or comparison logic, but I
want to keep this patch as mechanical as possible.
Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
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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 removes the dependency on libnsl from nscd. It only used __nis_hash,
build its own copy under the name __nscd_hash.
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Hide internal __nis_hash function to allow direct access within libc.so
and libc.a without using GOT nor PLT.
[BZ #18822]
* nscd/nscd_helper.c (__nis_hash): New prototype.
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This patch consolidates all the non cancellable close calls to use
the __close_nocancel{_nostatus} identifier. For non cancellable targets
it will be just a macro to call the default respective symbol while on Linux
will be a internal one.
Also, since it is used on libcrypto it is also exported in GLIBC_PRIVATE
namespace.
Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu.
* sysdeps/generic/not-cancel.h (close_not_cancel): Remove macro.
(close_not_cancel_no_status): Likewise.
(__close_nocancel): New macro.
(__close_nocancel_no_status): Likewise.
* sysdeps/unix/sysv/linux/not-cancel.h (__close_nocancel): Remove
macro.
(close_not_cancel): Likewise.
(close_not_cancel_no_status): Likewise.
(__close_nocancel): New prototype.
(__close_nocancel_no_status): New function.
* sysdeps/unix/sysv/linux/close.c (__close_nocancel): New function.
* catgets/open_catalog.c (__open_catalog): Replace
close_not_cancel{_no_status) with __close_nocancel{_nostatus}.
* gmon/gmon.c (write_gmon): Likewise.
* iconv/gconv_cache.c (__gconv_load_cache): Likewise.
* intl/loadmsgcat.c (close): Likewise.
* io/ftw.c (open_dir_stream): Likewise.
(ftw_startup): Likewise.
* libio/fileops.c (_IO_file_open): Likewise.
(_IO_file_close_mmap): Likewise.
(_IO_file_close): Likewise.
* libio/iopopen.c (_IO_dup2): Likewise.
* locale/loadarchive.c (_nl_load_locale_from_archive): Likewise.
* locale/loadlocale.c (_nl_load_locale): Likewise.
* login/utmp_file.c (pututline_file): Likewise.
(endutent_file): Likewise.
* misc/daemon.c (daemon): Likewise.
* nscd/nscd_getai.c (__nscd_getai): Likewise.
* nscd/nscd_getgr_r.c (nscd_getgr_r): Likewise.
* nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise.
* nscd/nscd_getpw_r.c (nscd_getpw_r): Likewise.
* nscd/nscd_getserv_r.c (nscd_getserv_r): Likewise.
* nscd/nscd_helper.c (open_socket): Likewise.
(__nscd_open_socket): Likewise.
* nscd/nscd_initgroups.c (__nscd_getgrouplist): Likewise.
* nscd/nscd_netgroup.c (__nscd_setnetgrent): Likewise.
(__nscd_innetgr): Likewise.
* nss/nss_db/db-open.c (internal_setent): Likewise.
* resolv/res-close.c (__res_iclose): Likewise.
* sunrpc/pm_getmaps.c (pmap_getmaps): Likewise.
* sysdeps/posix/closedir.c (__closedir): Likewise.
* sysdeps/posix/getaddrinfo.c (getaddrinfo): Likewise.
* sysdeps/posix/getcwd.c (__getcwd): Likewise.
* sysdeps/posix/opendir.c (tryopen_o_directory): Likewise.
(opendir_tail): Likewise.
* sysdeps/posix/spawni.c (__spawni_child): Likewise.
* sysdeps/unix/sysv/linux/check_native.c (__check_native): Likewise.
* sysdeps/unix/sysv/linux/check_pf.c (__check_pf): Likewise.
* sysdeps/unix/sysv/linux/fips-private.h (fips_enabled_p): Likewise.
* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Likewise.
(gethostid): Likewise.
* sysdeps/unix/sysv/linux/getloadavg.c (getloadavg): Likewise.
* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
Likewise.
* sysdeps/unix/sysv/linux/getsysstats.c (__get_nprocs): Likewise.
* sysdeps/unix/sysv/linux/grantpt.c (close_all_fds): Likewise.
* sysdeps/unix/sysv/linux/i386/smp.h (is_smp_system): Likewise.
* sysdeps/unix/sysv/linux/ia64/has_cpuclock.c (has_cpuclock):
Likewise.
* sysdeps/unix/sysv/linux/if_index.c (__if_nametoindex): Likewise.
* sysdeps/unix/sysv/linux/libc_fatal.c (backtrace_and_maps): Likewise.
* sysdeps/unix/sysv/linux/malloc-sysdep.h (check_may_shrink_heap):
Likewise.
* sysdeps/unix/sysv/linux/mq_notify.c (init_mq_netlink): Likewise.
* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
Likewise.
* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Likewise.
* sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Likewise.
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This fixes (harmless) data races when accessing the various
__have_sock_cloexec variables.
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This patch defines _STRING_ARCH_unaligned to 0 on default bits/string.h
header to avoid undefined compiler warnings on platforms that do not
define it. It also make adjustments in code where tests checked if macro
existed or not.
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2012-05-15 Jeff Law <law@redhat.com>
Andreas Jaeger <aj@suse.de>
[BZ #13594]
* nscd/nscd-client.h (__nscd_acquire_maplock): New function, split
out from...
* nscd/nscd_helper.c (__nscd_get_map_ref): ... here.
* nscd/nscd-client.h: Add __nscd_acquire_maplock.
* nscd/nscd_gethst_r.c (__nscd_get_nl_timestamp): Add locking to
code changing __hst_map_handle.map.
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Whenever getaddrinfo needed network interface information it used the
netlink interface to read the information every single time. The
problem is that this information can change at any time.
The patch implements monitoring of the network interfaces through
nscd. If no change is detected the previously read information can
be reused (which is the norm). This timestamp information is also
made available to other processes using the shared memory segment
between nscd and those processes.
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There are two issues with the forced loop exit in the nscd lookup:
1. the estimate of the entry size isn't pessimistic enough for all
databases, resulting potentially is too early exits
2. the combination of 64-bit process and 32-bit nscd would lead to
rejecting valid records in the database.
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The patch to bound the search in the nscd caches used a wrong exit
condition. Fixed now.
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We can compute an absolute maximum for the number of elements which
can fit into the currently mapped database. Stop after that many
iterations.
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The nscd database mapped in processes can change at any time. We
have to be more vigilant when it comes to using that memory. Test
the data entries are valid in their entire size, don't read data
again from memory once we verified it, and make sure the trailing
pointer is not going off the deep end.
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from definition.
* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Don't define
label if it is not used.
* elf/dl-profile.c (_dl_start_profile): Define real-type variant
of gmon_hist_hdr and gmon_hdr structures and use them.
* elf/dl-load.c (open_verify): Add temporary variable to avoid
warning.
* nscd/nscd_helper.c (get_mapping): Avoid casts to avoid warnings.
* sunrpc/clnt_raw.c (clntraw_private_s): Use union in definition
to avoid cast.
* inet/rexec.c (rexec_af): Make sa2 a union to avoid warnings.
* inet/rcmd.c (rcmd_af): Make from a union of the various needed types
to avoid warnings.
(iruserok_af): Use ss_family instead of casts.
* gmon/gmon.c (write_hist): Define real-type variant of
gmon_hist_hdr structure and use it.
(write_gmon): Likewise for gmon_hdr.
* sysdeps/unix/sysv/linux/readv.c: Avoid declaration of replacement
function if we are not going to define it.
* sysdeps/unix/sysv/linux/writev.c: Likewise.
* inet/inet6_option.c (optin_alloc): Add temporary variable to
avoid warning.
* libio/strfile.h (struct _IO_streambuf): Use correct type and
name of VTable element.
* libio/iovsprintf.c: Avoid casts to avoid warnings.
* libio/iovsscanf.c: Likewise.
* libio/vasprintf.c: Likewise.
* libio/vsnprintf.c: Likewise.
* stdio-common/isoc99_vsscanf.c: Likewise.
* stdlib/strfmon_l.c: Likewise.
* debug/vasprintf_chk.c: Likewise.
* debug/vsnprintf_chk.c: Likewise.
* debug/vsprintf_chk.c: Likewise.
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SOCK_NONBLOCK if possible.
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* nscd/connections.c (dbs): Add initializers for .suggested_module.
(verify_persistent_db): Remove one unnecessary test and add a new one
for bad configuration.
(nscd_init): Improve error reported when persistent database cannot
be reused.
* nscd/nscd.h (DEFAULT_SUGGESTED_MODULE): Define.
* nscd/nscd_conf.c (nscd_parse_file): Provide default values for
.suggested_module and .max_db_size and case config file says the
values are zero.
* nscd/nscd_helper.c (get_mapping): Fail if hash table module is zero.
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* nscd/nscd_getai.c (__nscd_getai): Set errno to 0 in case we found
no entry.
* nscd/nscd_getgr.c (nscd_getgr_r): Likewise.
* nscd/nscd_gethst_r.c (nscd_gethst_r): Likewise.
* nscd/nscd_getpw_r.c (nscd_getpw_r): Likewise.
* nscd/nscd_getserv_r.c (nscd_getserv_r): Likewise.
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2007-10-13 Ulrich Drepper <drepper@redhat.com>
[BZ #3242]
* nscd/nscd_helper.c (wait_on_socket): Take timeout as parameter.
(__readall): If reading failed due to EAGAIN error wait a bit
and possibly try again.
(__readvall): Likewise.
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* sysdeps/i386/dl-trampoline.S (_dl_runtime_profile): Fix a few
more little bugs in creating the stack frame when pltexit has to
be called.
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* nscd/nscd_helper.c (get_mapping): If nscd also transfers the
file size don't call fstat.
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ahead and map the file. This should always be correct and we can
catch problems later.
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descriptor received from nscd.
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COND_NWAITERS_SHIFT.
* pthread_cond_destroy.c: Use COND_NWAITERS_SHIFT instead of
COND_CLOCK_BITS.
* pthread_cond_init.c: Likewise.
* pthread_cond_timedwait.c: Likewise.
* pthread_cond_wait.c: Likewise.
* pthread_condattr_getclock.c: Likewise.
* pthread_condattr_setclock.c: Likewise.
* sysdeps/unix/sysv/linux/lowlevelcond.sym: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
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