platform/upstream/glibc.git
7 years agoposix: Consolidate Linux pause syscall
Adhemerval Zanella [Mon, 21 Nov 2016 19:26:35 +0000 (17:26 -0200)]
posix: Consolidate Linux pause syscall

This patch consolidates the pause Linux implementation on
sysdeps/unix/sysv/linux/pause.c.  If defined the pause syscall
(__NR_pause) will be used, other ppoll with 0 arguments will be
used instead.

It has the small advantage of generic pause implementation with
uses rt_sigprocmask plus rt_sigsuspend because it requires only
one syscall and the pause is done atomically regarding signal
handling (for instance, pause may not be interrupted if the
signal arrives between the rt_sigprocmask and rt_sigsuspend
syscall).

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu,
sparc64-linux-gnu, and sparcv9-linux-gnu.

* sysdeps/unix/sysv/linux/generic/pause.c: Remove file.
* sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h [__arch64__]
(__NR_pause): Undefine.
* sysdeps/unix/sysv/linux/pause.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Remove pause from
auto-generation list.

7 years agoCorrect comments in x86_64/multiarch/memcmp.S
H.J. Lu [Thu, 18 May 2017 21:02:02 +0000 (14:02 -0700)]
Correct comments in x86_64/multiarch/memcmp.S

* sysdeps/x86_64/multiarch/memcmp.S (__GI_memcmp): Correct
comments.

7 years agoReduce value of LD_HWCAP_MASK for tst-env-setuid test case
Siddhesh Poyarekar [Thu, 18 May 2017 20:12:01 +0000 (01:42 +0530)]
Reduce value of LD_HWCAP_MASK for tst-env-setuid test case

It was discovered that the dynamic linker allocates a massive amount
of memory that increases with the value of LD_HWCAP_MASK.  Due to
this, setting its value to 0xffffffff in the environment of
tst-env-setuid would cause it to fail in some environments where
overcommit was disabled or severely constrained because malloc would
fail.

Since this test is only concerned with the value of LD_HWCAP_MASK
envvar being conserved (or not, for setxid binaries), lower its value
to avoid spurious failures.

The allocation bug is reported as #21502.

7 years agomanual: Convert @tables of annotated @items to @vtables.
Rical Jasan [Tue, 16 May 2017 06:41:25 +0000 (23:41 -0700)]
manual: Convert @tables of annotated @items to @vtables.

The conversion script will convert these annotations, but the
replacement Summary-generation script won't catch them because @items
in @tables are not generally considered annotatable, causing them to
be skipped over (or cause errors).  Using @vtable ensures their
continued presence in the Summary, with the added benefit that Texinfo
will also automatically include them in the Variable and Constant
Macro index now.

* manual/conf.texi: Convert @tables of annotated @items to
@vtables.
* manual/lang.texi: Likewise.
* manual/pattern.texi: Likewise.
* manual/resource.texi: Likewise.
* manual/socket.texi: Likewise.

7 years agomanual: Fix up invalid header and standards syntax.
Rical Jasan [Sun, 14 May 2017 10:58:32 +0000 (03:58 -0700)]
manual: Fix up invalid header and standards syntax.

This commit handles exceptional cases of invalid syntax for the
@standards conversion script.

* manual/crypt.texi: Move a comment out of an @*x list.
* manual/filesys.texi: Refactor some comments, one of which
looks like a standard.  Fix incorrectly separated standards.
* manual/locale.texi: Invert an annotation.
* manual/resource.texi: Fix incorrectly separated standards.
* manual/time.texi: Refactor a @vtable that obscures an
annotation.
* manual/users.texi: Refactor multiple headers to occupy a
single @comment.

7 years agopowerpc: Improve memcmp performance for POWER8
Rajalakshmi Srinivasaraghavan [Thu, 18 May 2017 05:51:20 +0000 (11:21 +0530)]
powerpc: Improve memcmp performance for POWER8

Vectorization improves performance over the current implementation.
Tested on powerpc64 and powerpc64le.

7 years agofloat128: Extend __MATH_TG for float128 support
Gabriel F. T. Gomes [Fri, 9 Dec 2016 13:41:55 +0000 (11:41 -0200)]
float128: Extend __MATH_TG for float128 support

* math/math.h (__MATH_TG): Extend the conditions to add
_Float128 support.
* misc/sys/cdefs.h (__HAVE_GENERIC_SELECTION): New macro.

7 years agopowerpc: Add a POWER8-optimized version of cosf()
Paul Clarke [Wed, 17 May 2017 19:35:33 +0000 (16:35 -0300)]
powerpc: Add a POWER8-optimized version of cosf()

This implementation is based on the one already used at
sysdeps/powerpc/powerpc64/fpu/multiarch/s_sinf-power8.S.

* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
[$(subdir) = math] (libm-sysdep_routines): Add s_cosf-power8 and
s_cosf-ppc64.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-power8.S: New file.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-ppc64.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf.c: Likewise.
* sysdeps/powerpc/powerpc64/power8/fpu/s_cosf.S: Likewise.

7 years agoConvert e_exp2l.c into a template
Gabriel F. T. Gomes [Tue, 16 May 2017 16:34:34 +0000 (13:34 -0300)]
Convert e_exp2l.c into a template

This patch converts the implementation of exp2l in math/e_exp2l.c into
a template in math/e_exp2_template.c, then adjusts Makefile to use
this template for long double (the implementations for float and
double in sysdeps have higher precedence and are not used).  This
template can also be used for float128, thus reducing the amount of
duplicated code that gets added when adding support the new type.

Tested for powerpc64le and s390x.

* math/Makefile (libm-calls): Move e_exp2F to gen-libm-calls.
(gen-libm-calls): Add e_exp2F to use the template.
* math/e_exp2l.c: Rename to math/e_exp2_template.c.
* math/e_exp2_template.c: New file, renamed from
math/e_exp2l.c, and made into a template.
* sysdeps/generic/math-type-macros.h (M_MIN_EXP): New macro.

7 years agotunables: Add support for tunables of uint64_t type
Siddhesh Poyarekar [Wed, 17 May 2017 07:41:55 +0000 (13:11 +0530)]
tunables: Add support for tunables of uint64_t type

Recognize the uint64_t type in addition to the current int32_t and
size_t.  This allows addition of tunables of uint64_t types.  In
addition to adding the uint64_t type, this patch also consolidates
validation and reading of integer types in tunables.

One notable change is that of overflow computation in
tunables_strtoul.  The function was lifted from __internal_strtoul,
but it does not need the boundary condition check (i.e. result ==
ULONG_MAX) since it does not need to set errno.  As a result the check
can be simplified, which I have now done.

* elf/dl-tunable-types.h (tunable_type_code_t): New type
TUNABLE_TYPE_UINT_64.
* elf/dl-tunables.c (tunables_strtoul): Return uint64_t.
Simplify computation of overflow.
(tunable_set_val_if_valid_range_signed,
tunable_set_val_if_valid_range_unsigned): Remove and replace
with this...
(TUNABLE_SET_VAL_IF_VALID_RANGE): ... New macro.
(tunable_initialize): Adjust.  Add uint64_t support.
(__tunable_set_val): Add uint64_t support.
* README.tunables: Document it.

7 years agotunables: Specify a default value for tunables
Siddhesh Poyarekar [Wed, 17 May 2017 07:41:00 +0000 (13:11 +0530)]
tunables: Specify a default value for tunables

Enhance dl-tunables.list to allow specifying a default value for a
tunable that it would be initialized to.

* scripts/gen-tunables.awk: Recognize 'default' keyword in
dl-tunables.list.
* README.tunables: Document it.

7 years agoposix: Fix and simplify default p{read,write}v implementation
Adhemerval Zanella [Tue, 2 May 2017 17:39:58 +0000 (14:39 -0300)]
posix: Fix and simplify default p{read,write}v implementation

Currently all architectures but microblaze use wire-up syscall for
p{readv,write}v.  Microblaze still uses the syscall emulation using
sysdep/posix/p{readv,writev}.c and it was reported in some ocasions
[1] [2] that it might have some issues with some linux specific
usage (mainly with O_DIRECT and the alignment requirement).

Although it is not an issue for virtually all the system, this
patch refactors the sysdeps/posix p{read,write}v syscall to avoid
such issue (by using posix_memalign on the buffer used on
p{read,write} call) and by refactoring it common files to avoid
the need check on defines to correct set the alias and internal
symbols.

Checked on microblaze-linux-gnu check with run-built-tests=no and
by using the sysdeps/posix implementation on x86_64-linux-gnu (just
for sanity test where it shown no regression).

* sysdeps/posix/preadv.c: Use sysdeps/posix/preadv_common.c.
* sysdeps/posix/preadv64.c: Likewise.
* sysdeps/unix/sysv/linux/preadv.c: Likewise.
* sysdeps/unix/sysv/linux/preadv64.c: Likewise.
* sysdeps/posix/pwritev.c: Use sysdeps/posix/pwritev_common.c.
* sysdeps/posix/pwritev64.c: Likewise.
* sysdeps/unix/sysv/linux/pwritev.c: Likewise.
* sysdeps/unix/sysv/linux/pwritev64.c: Likewise.
* sysdeps/posix/preadv_common.c: New file.
* sysdeps/posix/pwritev_common.c: Likewise.

[1] http://www.mail-archive.com/qemu-devel@nongnu.org/msg25282.html
[2] https://bugzilla.redhat.com/show_bug.cgi?id=563103#c8

7 years agofloat128: Enable use of IEEE wrapper templates
Gabriel F. T. Gomes [Wed, 1 Feb 2017 19:54:25 +0000 (17:54 -0200)]
float128: Enable use of IEEE wrapper templates

The templates for the IEEE functions wrappers implement wrappers that
do not rely on _LIB_VERSION / matherr / __kernel_standard
functionality to set errno and fix the return value of the functions.
The wrappers are ready to be used by all floating-point types, however
they will first be used by float128, since the old wrappers for float,
double, and long double need to be first deprecated and versioned.

This commits defines __USE_WRAPPER_TEMPLATE to 1 for float128 files,
so that the new wrapper templates are used for this type.

* sysdeps/generic/math-type-macros-float128.h
(__USE_WRAPPER_TEMPLATE): Define to 1 to enable use of the
wrapper templates.

7 years agofloat128: Add private _Float128 declarations for libm.
Paul E. Murphy [Thu, 4 May 2017 20:00:33 +0000 (17:00 -0300)]
float128: Add private _Float128 declarations for libm.

Add the necessary bits to the private headers to support
building the _Float128 libm functions.

A local override for float.h is provided to include the
missing *FLT128 macros implied by TS 18661-3 for this
type when compiling prior to GCC 7.

* include/complex.h (__kernel_casinhf128): New declaration.
* include/float.h: New file.
* include/math.h (__finitef128): Add a hidden def.
(__isinff128): Likewise.
(__isnanf128): Likewise.
(__fpclassify): Likewise.
(__issignalling): Likewise.
(__expf128): Likewise.
(__expm1f128): Likewise.

* sysdeps/generic/fix-fp-int-convert-overflow.h:
(FIX_FLT128_LONG_CONVERT_OVERFLOW): New macro.
(FIX_FLT128_LLONG_CONVERT_OVERFLOW): Likewise.

* sysdeps/generic/math-type-macros-float128.h: New file.

* sysdeps/generic/math_private.h: Include bits/floatn.h and
math_private_calls.h for _Float128.
(__isinff128): New inline implementation used when GCC < 7.0,
since in this case __builtin_isinf_sign is broken.
(fabsf128): New inline implementation that calls the builtin.
(__EXPR_FLT128): New macro.
(min_of_type): Optionally include _Float128 types too.

* sysdeps/generic/math_private_calls.h (__kernel_sincos):
Declare for _Float128.
(__kernel_rem_pio2): Likewise.

* sysdeps/ieee754/ldbl-opt/s_sin.c:
(__DECL_SIMD_sincos_disablef128): New macro.

7 years agofloat128: Include math-finite.h for _Float128
Gabriel F. T. Gomes [Mon, 20 Mar 2017 13:07:35 +0000 (10:07 -0300)]
float128: Include math-finite.h for _Float128

All the declarations in math-finite.h are macroized by floating-point
type.  This patch includes it for float128 and protects the
declarations of functions that need not be declared for float128.

* math/math.h: Include bits/math-finite.h for float128.
(__MATH_DECLARING_FLOATN): Define to control declaration of
float128 functions.
* math/bits/math-finite.h (pow10): Do not declare for float128.
(gamma): Likewise.
(scalb): Likewise.

7 years agofloat128: Add public _Float128 declarations to libm.
Paul E. Murphy [Wed, 20 Jul 2016 16:53:36 +0000 (11:53 -0500)]
float128: Add public _Float128 declarations to libm.

This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.

* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.

* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.

* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.

* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.

* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.

* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.

* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0.  Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.

7 years agoRemove useless SPARC signbit aliases.
Joseph Myers [Fri, 12 May 2017 16:37:12 +0000 (16:37 +0000)]
Remove useless SPARC signbit aliases.

The SPARC implementations of __signbit* functions have aliases
signbit, signbitf, signbitl.  These are useless, as they aren't
exported from the shared libraries (only the __signbit* functions are
exported, to be used by the type-generic signbit macro with older
compilers).  This patch removes the useless aliases.

Tested (compilation only) with build-many-glibcs.py for
sparc64-linux-gnu and sparcv9-linux-gnu.

* sysdeps/sparc/sparc32/fpu/s_signbit.S (signbit): Remove alias.
(signbitf): Likewise.
* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S (signbit):
Likewise.
(signbitl): Likewise.
* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S (signbitf):
Likewise.
* sysdeps/sparc/sparc64/fpu/s_signbit.S (signbit): Likewise.
(signbitl): Likewise.
* sysdeps/sparc/sparc64/fpu/s_signbitf.S (signbitf): Likewise.

7 years agofork: Remove bogus parent PID assertions [BZ #21386]
Florian Weimer [Fri, 12 May 2017 09:58:09 +0000 (11:58 +0200)]
fork: Remove bogus parent PID assertions [BZ #21386]

7 years agoRemove __ASSUME_STATFS_F_FLAGS.
Joseph Myers [Fri, 12 May 2017 11:48:37 +0000 (11:48 +0000)]
Remove __ASSUME_STATFS_F_FLAGS.

Now that 3.2 is the minimum Linux kernel version for glibc, this patch
removes __ASSUME_STATFS_F_FLAGS and associated conditional code.

Tested for x86_64.

* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_STATFS_F_FLAGS): Remove macro.
* sysdeps/unix/sysv/linux/internal_statvfs.c
[!__ASSUME_STATFS_F_FLAGS]: Remove conditional code.

7 years agoSuppress internal declarations for most of the testsuite.
Zack Weinberg [Mon, 21 Nov 2016 01:46:30 +0000 (20:46 -0500)]
Suppress internal declarations for most of the testsuite.

This patch adds a new build module called 'testsuite'.
IS_IN (testsuite) implies _ISOMAC, as do IS_IN_build and __cplusplus
(which means several ad-hoc tests for __cplusplus can go away).
libc-symbols.h now suppresses almost all of *itself* when _ISOMAC is
defined; in particular, _ISOMAC mode does not get config.h
automatically anymore.

There are still quite a few tests that need to see internal gunk of
one variety or another.  For them, we now have 'tests-internal' and
'test-internal-extras'; files in this category will still be compiled
with MODULE_NAME=nonlib, and everything proceeds as it always has.
The bulk of this patch is moving tests from 'tests' to
'tests-internal'.  There is also 'tests-static-internal', which has
the same effect on files in 'tests-static', and 'modules-names-tests',
which has the *inverse* effect on files in 'modules-names' (it's
inverted because most of the things in modules-names are *not* tests).
For both of these, the file must appear in *both* the new variable and
the old one.

There is also now a special case for when libc-symbols.h is included
without MODULE_NAME being defined at all.  (This happens during the
creation of libc-modules.h, and also when preprocessing Versions
files.)  When this happens, IS_IN is set to be always false and
_ISOMAC is *not* defined, which was the status quo, but now it's
explicit.

The remaining changes to C source files in this patch seemed likely to
cause problems in the absence of the main change.  They should be
relatively self-explanatory.  In a few cases I duplicated a definition
from an internal header rather than move the test to tests-internal;
this was a judgement call each time and I'm happy to change those
however reviewers feel is more appropriate.

* Makerules: New subdir configuration variables 'tests-internal'
and 'test-internal-extras'.  Test files in these categories will
still be compiled with MODULE_NAME=nonlib.  Test files in the
existing categories (tests, xtests, test-srcs, test-extras) are
now compiled with MODULE_NAME=testsuite.
New subdir configuration variable 'modules-names-tests'.  Files
which are in both 'modules-names' and 'modules-names-tests' will
be compiled with MODULE_NAME=testsuite instead of
MODULE_NAME=extramodules.
(gen-as-const-headers): Move to tests-internal.
(do-tests-clean, common-mostlyclean): Support tests-internal.
* Makeconfig (built-modules): Add testsuite.
* Makefile: Change libof-check-installed-headers-c and
libof-check-installed-headers-cxx to 'testsuite'.
* Rules: Likewise.  Support tests-internal.
* benchtests/strcoll-inputs/filelist#en_US.UTF-8:
Remove extra-modules.mk.

* config.h.in: Don't check for __OPTIMIZE__ or __FAST_MATH__ here.
* include/libc-symbols.h: Move definitions of _GNU_SOURCE,
PASTE_NAME, PASTE_NAME1, IN_MODULE, IS_IN, and IS_IN_LIB to the
very top of the file and rationalize their order.
If MODULE_NAME is not defined at all, define IS_IN to always be
false, and don't define _ISOMAC.
If any of IS_IN (testsuite), IS_IN_build, or __cplusplus are
true, define _ISOMAC and suppress everything else in this file,
starting with the inclusion of config.h.
Do check for inappropriate definitions of __OPTIMIZE__ and
__FAST_MATH__ here, but only if _ISOMAC is not defined.
        Correct some out-of-date commentary.

* include/math.h: If _ISOMAC is defined, undefine NO_LONG_DOUBLE
and _Mlong_double_ before including math.h.
* include/string.h: If _ISOMAC is defined, don't expose
_STRING_ARCH_unaligned. Move a comment to a more appropriate
location.

* include/errno.h, include/stdio.h, include/stdlib.h, include/string.h
* include/time.h, include/unistd.h, include/wchar.h: No need to
check __cplusplus nor use __BEGIN_DECLS/__END_DECLS.

* misc/sys/cdefs.h (__NTHNL): New macro.
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h
(__m81_defun): Use __NTHNL to avoid errors with GCC 6.

* elf/tst-env-setuid-tunables.c: Include config.h with _LIBC
defined, for HAVE_TUNABLES.
* inet/tst-checks-posix.c: No need to define _ISOMAC.
* intl/tst-gettext2.c: Provide own definition of N_.
* math/test-signgam-finite-c99.c: No need to define _ISOMAC.
* math/test-signgam-main.c: No need to define _ISOMAC.
* stdlib/tst-strtod.c: Convert to test-driver. Split locale_test to...
* stdlib/tst-strtod1i.c: ...this new file.
* stdlib/tst-strtod5.c: Convert to test-driver and add copyright notice.
        Split tests of __strtod_internal to...
* stdlib/tst-strtod5i.c: ...this new file.
* string/test-string.h: Include stdint.h. Duplicate definition of
inhibit_loop_to_libcall here (from libc-symbols.h).
* string/test-strstr.c: Provide dummy definition of
libc_hidden_builtin_def when including strstr.c.
* sysdeps/ia64/fpu/libm-symbols.h: Suppress entire file in _ISOMAC
mode; no need to test __STRICT_ANSI__ nor __cplusplus as well.
* sysdeps/x86_64/fpu/math-tests-arch.h: Include cpu-features.h.
Don't include init-arch.h.
* sysdeps/x86_64/multiarch/test-multiarch.h: Include cpu-features.h.
Don't include init-arch.h.

* elf/Makefile: Move tst-ptrguard1-static, tst-stackguard1-static,
tst-tls1-static, tst-tls2-static, tst-tls3-static, loadtest,
unload, unload2, circleload1, neededtest, neededtest2,
neededtest3, neededtest4, tst-tls1, tst-tls2, tst-tls3,
tst-tls6, tst-tls7, tst-tls8, tst-dlmopen2, tst-ptrguard1,
tst-stackguard1, tst-_dl_addr_inside_object, and all of the
ifunc tests to tests-internal.
Don't add $(modules-names) to test-extras.
* inet/Makefile: Move tst-inet6_scopeid_pton to tests-internal.
Add tst-deadline to tests-static-internal.
* malloc/Makefile: Move tst-mallocstate and tst-scratch_buffer to
tests-internal.
* misc/Makefile: Move tst-atomic and tst-atomic-long to tests-internal.
* nptl/Makefile: Move tst-typesizes, tst-rwlock19, tst-sem11,
tst-sem12, tst-sem13, tst-barrier5, tst-signal7, tst-tls3,
tst-tls3-malloc, tst-tls5, tst-stackguard1, tst-sem11-static,
tst-sem12-static, and tst-stackguard1-static to tests-internal.
        Link tests-internal with libpthread also.
Don't add $(modules-names) to test-extras.
* nss/Makefile: Move tst-field to tests-internal.
* posix/Makefile: Move bug-regex5, bug-regex20, bug-regex33,
tst-rfc3484, tst-rfc3484-2, and tst-rfc3484-3 to tests-internal.
* stdlib/Makefile: Move tst-strtod1i, tst-strtod3, tst-strtod4,
tst-strtod5i, tst-tls-atexit, and tst-tls-atexit-nodelete to
tests-internal.
        * sunrpc/Makefile: Move tst-svc_register to tests-internal.
* sysdeps/powerpc/Makefile: Move test-get_hwcap and
test-get_hwcap-static to tests-internal.
* sysdeps/unix/sysv/linux/Makefile: Move tst-setgetname to
tests-internal.
* sysdeps/x86_64/fpu/Makefile: Add all libmvec test modules to
modules-names-tests.

7 years agoRemove _IO_MTSAFE_IO from public headers.
Zack Weinberg [Wed, 1 Mar 2017 13:17:07 +0000 (08:17 -0500)]
Remove _IO_MTSAFE_IO from public headers.

_IO_MTSAFE_IO controls whether stdio is *built* with support for
multithreading.  In the distant past it might also have worked as a
feature selection macro, allowing library *users* to select
thread-safe or lock-free stdio at application build time, I haven't
done the archaeology.  Nowadays, defining _IO_MTSAFE_IO while using
the installed headers, or in _ISOMAC mode, will cause libio.h to throw
syntax errors.

This patch removes _IO_MTSAFE_IO from the public headers
(specifically, from libio/libio.h).  The most important thing it
controlled in there was whether libio.h defines _IO_lock_t itself or
expects stdio-lock.h to have done it, and we do still need a
inter-header communication macro for that, because stdio-lock.h can
only define _IO_lock_t as a typedef.  I've invented
_IO_lock_t_defined, which is defined by both versions of stdio-lock.h.

_IO_MTSAFE_IO also controlled the definitions of a handful of macros
that _might_ count as part of the public libio.h interface.  They are
now unconditionally given their non-_IO_MTSAFE_IO definition in
libio/libio.h, and include/libio.h redefines them with the
_IO_MTSAFE_IO definition.  This should minimize the odds of breaking
old software that actually uses those macros.

I suspect that this entire mechanism is vestigial, and that glibc
won't build anymore if you *don't* define _IO_MTSAFE_IO, but that's
another patchset.  The bulk of libio.h is internal-use-only stuff that
no longer makes sense to expose (libstdc++ gave up on making a FILE
the same object as a C++ filebuf *decades* ago) but that, too, is
another patchset.

* libio/libio.h: Condition dummy definition of _IO_lock_t on
_IO_lock_t_defined, not _IO_MTSAFE_IO. Unconditionally use the
non-_IO_MTSAFE_IO definitions for _IO_peekc, _IO_flockfile,
_IO_funlockfile, and _IO_ftrylockfile.  Only define
_IO_cleanup_region_start and _IO_cleanup_region_end if not
already defined.
* include/libio.h: If _IO_MTSAFE_IO is defined, redefine
        _IO_peekc, _IO_flockfile, _IO_funlockfile, and _IO_ftrylockfile
        appropriately.
* sysdeps/generic/stdio-lock.h, sysdeps/nptl/stdio-lock.h:
Define _IO_lock_t_defined after defining _IO_lock_t.

7 years agopowerpc: Fix signal handling in backtrace
Adhemerval Zanella [Mon, 8 May 2017 14:22:20 +0000 (11:22 -0300)]
powerpc: Fix signal handling in backtrace

Now with read consolidation which uses SYSCALL_CANCEL macro, a frame
pointer is created in the syscall code and this makes the powerpc
backtrace obtain a bogus entry for the signal handling patch.

It is because it does not setup the correct frame pointer register
(r1) based on the saved value from the kernel sigreturn.  It was not
failing because the syscall frame pointer register was the same one
for the next frame (the function that actually called the syscall).

This patch fixes it by setup the next stack frame using the saved
one by the kernel sigreturn.  It fixes tst-backtrace{5,6} from
the read consolidation patch.

Checked on powerpc-linux-gnu and powerpc64le-linux-gnu.

* sysdeps/powerpc/powerpc32/backtrace.c (is_sigtramp_address): Use
void* for argument type and use VDSO_SYMBOL macro.
(is_sigtramp_address_rt): Likewise.
(__backtrace): Setup expected frame pointer address for signal
handling.
* sysdeps/powerpc/powerpc64/backtrace.c (is_sigtramp_address): Use
void* for argumetn type and use VSDO_SYMBOL macro.
(__backtrace): Setup expected frame pointer address for signal
handling.

7 years agoConsolidate Linux writev implementation
Adhemerval Zanella [Tue, 3 Nov 2015 12:33:52 +0000 (10:33 -0200)]
Consolidate Linux writev implementation

This patch consolidates the writev Linux syscall implementation on
sysdeps/unix/sysv/linux/writev.c.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* sysdeps/unix/sysv/linux/writev.c: New file.

7 years agoConsolidate Linux readv implementation
Adhemerval Zanella [Tue, 3 Nov 2015 12:26:18 +0000 (10:26 -0200)]
Consolidate Linux readv implementation

This patch consolidates the readv Linux syscall implementation on
sysdeps/unix/sysv/linux/readv.c.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* sysdeps/unix/sysv/linux/readv.c: New file.

7 years agoConsolidate Linux write syscall
Adhemerval Zanella [Tue, 3 Nov 2015 12:04:25 +0000 (10:04 -0200)]
Consolidate Linux write syscall

This patch consolidates the write Linux syscall implementation on
sysdeps/unix/sysv/linux/write.c.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* include/unistd.h (write): Add hidden proto.
* io/Makefile (CFLAGS-write.c): New rule.
* nptl/Makefile (CFLAGS-write.c): Likewise.
* sysdeps/unix/sysv/linux/write.c: New file.

7 years agoConsolidate Linux read syscall
Adhemerval Zanella [Tue, 3 Nov 2015 12:13:18 +0000 (10:13 -0200)]
Consolidate Linux read syscall

This patch consolidates the read Linux syscall implementation on
sysdeps/unix/sysv/linux/read.c.  This leads to a different frame
pointer creation on some architectures:

  * It fixes BZ#21428 on aarch64, since now the returned address
    for the read syscall can be correctly found out by
    backtrace_symbols.

  * It makes tst-backtrace{5,6} fails on powerpc due an issue on
    its custom backtrace implementation.  It is fixed on subsequent
    patch from this set.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

[BZ #21428]
* include/unistd.h (read): Add hidden proto.
* io/Makefile (CFLAGS-read.c): New rule.
* nptl/Makefile (CFLAGS-read.c): New rule.
* sysdeps/unix/sysv/linux/read.c: New file.

7 years agoConsolidate Linux creat implementation
Adhemerval Zanella [Fri, 11 Nov 2016 16:50:03 +0000 (14:50 -0200)]
Consolidate Linux creat implementation

This patch consolidates the creat Linux syscall implementation on
sysdeps/unix/sysv/linux/creat{64}.c.  The changes are:

  1. Remove creat{64} from auto-generation syscalls.list.
  2. Add a new creat{64}.c implementation.  For architectures that
     define __OFF_T_MATCHES_OFF64_T the default creat64 will create
     alias to required creat symbols.
  3. Use __NR_creat where possible, otherwise use internal open{64}
     call with expected flags.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* io/Makefile (CFLAGS-creat.c): New rule.
(CFLAGS-creat64.c): Likewise.
* sysdeps/unix/sysv/linux/alpha/creat.c: Remove file.
* sysdeps/unix/sysv/linux/generic/creat.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/creat64.c: Likewise.
* sysdeps/unix/sysv/linux/creat.c: New file.
* sysdeps/unix/sysv/linux/creat64.c: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Remove create from
auto-generated list.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.

7 years agoConsolidate Linux open implementation
Adhemerval Zanella [Fri, 11 Nov 2016 17:00:03 +0000 (15:00 -0200)]
Consolidate Linux open implementation

This patch consolidates the open Linux syscall implementation on
sysdeps/unix/sysv/linux/open{64}.c.  The changes are:

  1. Remove open{64} from auto-generation syscalls.list.
  2. Add a new open{64}.c implementation.  For architectures that
     define __OFF_T_MATCHES_OFF64_T the default open64 will create
     alias to required open symbols.
  3. Use __NR_openat as default syscall for open{64}.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* sysdeps/unix/sysv/linux/generic/open.c: Remove file.
* sysdeps/unix/sysv/linux/generic/open64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/open64.c: Likewise.
* sysdeps/unix/sysv/linux/open.c: New file.
* sysdeps/unix/sysv/linux/open64.c (__libc_open64): Use O_LARGEFILE
only for __OFF_T_MATCHES_OFF64_T and add alias to open if the case.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Remove open
from auto-generated list.

7 years agoConsolidate Linux close syscall generation
Adhemerval Zanella [Thu, 29 Oct 2015 21:26:05 +0000 (19:26 -0200)]
Consolidate Linux close syscall generation

This patch consolidates the close Linux syscall generation on
sysdeps/unix/sysv/linux/close.c.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* nptl/Makefile (CFLAGS-close.c): New flag.
* sysdeps/unix/sysv/linux/close.c: New file.

7 years agoAdd MAINTAINERS
DJ Delorie [Thu, 11 May 2017 17:38:30 +0000 (13:38 -0400)]
Add MAINTAINERS

Add a toplevel file "MAINTAINERS" that only points to the
MAINTAINERS page on the wiki.

7 years agotunables: Make tunable_list relro
Siddhesh Poyarekar [Thu, 11 May 2017 14:43:49 +0000 (20:13 +0530)]
tunables: Make tunable_list relro

As of now we don't need tunables to be writable after they have been
set initially, so there is no point in having them writable.  Put
tunable_list in .data.rel.ro so that it is set as read-only after
relocation.  This also allows us to move some of the dl_* variables
that are tunables controlled into the tunables infrastructure instead
of having two copies.

In future if we ever need specific tunables to be writable at runtime,
we can split the tunable_list into two.

Regression tested on x86_64 to verify that tests continue to pass.

* scripts/gen-tunables.awk: Add attribute_relro to
tunable_list.

7 years agoCondition some sys/ucontext.h contents on __USE_MISC (bug 21457).
Joseph Myers [Thu, 11 May 2017 14:15:26 +0000 (14:15 +0000)]
Condition some sys/ucontext.h contents on __USE_MISC (bug 21457).

Continuing the fixes for namespace issues arising from sys/ucontext.h,
this patch conditions various definitions, that are not needed for
defining mcontext_t / ucontext_t, on __USE_MISC, so they do not appear
in strict POSIX modes.

This patch is non-exhaustive; that is, it only conditions
straightforward cases and there may be more such definitions that can
be conditioned for these and other architectures, to be dealt with
later in separate patches.  Also, using __USE_MISC is the minimum
change for these definitions where they conflict with POSIX; some
headers already have __USE_GNU conditionals on similar definitions of
names for registers.  The patch specifically does not do anything with
definitions in bits/sigcontext.h, and nor does it condition any
inclusions of bits/sigcontext.h even where in fact that is not needed
on some architectures for the definitions of mcontext_t / ucontext_t.

As other namespace issues in these headers remain, this patch does not
fix bug 21457, nor allow any XFAILs to be removed.

Tested with build-many-glibcs.py.

[BZ #21457]
* sysdeps/arm/sys/ucontext.h (R0): Condition on [__USE_MISC].
(R1): Likewise.
(R2): Likewise.
(R3): Likewise.
(R4): Likewise.
(R5): Likewise.
(R6): Likewise.
(R7): Likewise.
(R8): Likewise.
(R9): Likewise.
(R10): Likewise.
(R11): Likewise.
(R12): Likewise.
(R13): Likewise.
(R14): Likewise.
(R15): Likewise.
* sysdeps/i386/sys/ucontext.h (REG_GS): Likewise.
(REG_FS): Likewise.
(REG_ES): Likewise.
(REG_DS): Likewise.
(REG_EDI): Likewise.
(REG_ESI): Likewise.
(REG_EBP): Likewise.
(REG_ESP): Likewise.
(REG_EBX): Likewise.
(REG_EDX): Likewise.
(REG_ECX): Likewise.
(REG_EAX): Likewise.
(REG_TRAPNO): Likewise.
(REG_ERR): Likewise.
(REG_EIP): Likewise.
(REG_CS): Likewise.
(REG_EFL): Likewise.
(REG_UESP): Likewise.
(REG_SS): Likewise.
* sysdeps/m68k/sys/ucontext.h (R_D0): Likewise.
(R_D1): Likewise.
(R_D2): Likewise.
(R_D3): Likewise.
(R_D4): Likewise.
(R_D5): Likewise.
(R_D6): Likewise.
(R_D7): Likewise.
(R_A0): Likewise.
(R_A1): Likewise.
(R_A2): Likewise.
(R_A3): Likewise.
(R_A4): Likewise.
(R_A5): Likewise.
(R_A6): Likewise.
(R_A7): Likewise.
(R_SP): Likewise.
(R_PC): Likewise.
(R_PS): Likewise.
(fpregset_t): Likewise.
(MCONTEXT_VERSION): Likewise.
* sysdeps/mips/sys/ucontext.h (CTX_R0): Likewise.
(CTX_AT): Likewise.
(CTX_V0): Likewise.
(CTX_V1): Likewise.
(CTX_A0): Likewise.
(CTX_A1): Likewise.
(CTX_A2): Likewise.
(CTX_A3): Likewise.
(CTX_T0): Likewise.
(CTX_T1): Likewise.
(CTX_T2): Likewise.
(CTX_T3): Likewise.
(CTX_T4): Likewise.
(CTX_T5): Likewise.
(CTX_T6): Likewise.
(CTX_T7): Likewise.
(CTX_S0): Likewise.
(CTX_S1): Likewise.
(CTX_S2): Likewise.
(CTX_S3): Likewise.
(CTX_S4): Likewise.
(CTX_S5): Likewise.
(CTX_S6): Likewise.
(CTX_S7): Likewise.
(CTX_T8): Likewise.
(CTX_T9): Likewise.
(CTX_K0): Likewise.
(CTX_K1): Likewise.
(CTX_GP): Likewise.
(CTX_SP): Likewise.
(CTX_S8): Likewise.
(CTX_RA): Likewise.
(CTX_MDLO): Likewise.
(CTX_MDHI): Likewise.
(CTX_CAUSE): Likewise.
(CTX_EPC): Likewise.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h: Condition
inclusion of <sys/procfs.h> on [__USE_MISC].
(greg_t): Condition on [__USE_MISC].
(gregset_t): Likewise.
(fpregset_t): Likewise.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h (greg_t): Likewise.
(NGREG): Likewise.
(gregset_t): Likewise.
(REG_R0): Likewise.
(REG_R1): Likewise.
(REG_R2): Likewise.
(REG_R3): Likewise.
(REG_R4): Likewise.
(REG_R5): Likewise.
(REG_R6): Likewise.
(REG_R7): Likewise.
(REG_R8): Likewise.
(REG_R9): Likewise.
(REG_R10): Likewise.
(REG_R11): Likewise.
(REG_R12): Likewise.
(REG_R13): Likewise.
(REG_R14): Likewise.
(REG_R15): Likewise.
(struct _libc_fpstate): Likewise.
(fpregset_t): Likewise.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h (NGREG): Likewise.
(NFPREG): Likewise.
(gregset_t): Likewise.
(fpregset_t): Likewise.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h (R_D0): Likewise.
(R_D1): Likewise.
(R_D2): Likewise.
(R_D3): Likewise.
(R_D4): Likewise.
(R_D5): Likewise.
(R_D6): Likewise.
(R_D7): Likewise.
(R_A0): Likewise.
(R_A1): Likewise.
(R_A2): Likewise.
(R_A3): Likewise.
(R_A4): Likewise.
(R_A5): Likewise.
(R_A6): Likewise.
(R_A7): Likewise.
(R_SP): Likewise.
(R_PC): Likewise.
(R_PS): Likewise.
(fpregset_t): Likewise.
(MCONTEXT_VERSION): Likewise.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h (MCONTEXT_VERSION):
Likewise.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h (REG_R0): Likewise.
(REG_R1): Likewise.
(REG_R2): Likewise.
(REG_R3): Likewise.
(REG_R4): Likewise.
(REG_R5): Likewise.
(REG_R6): Likewise.
(REG_R7): Likewise.
(REG_R8): Likewise.
(REG_R9): Likewise.
(REG_R10): Likewise.
(REG_R11): Likewise.
(REG_R12): Likewise.
(REG_R13): Likewise.
(REG_R14): Likewise.
(REG_R15): Likewise.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h: Condition inclusion
of <arch/abi.h> on [__USE_MISC].
(greg_t): Condition on [__USE_MISC].
(NGREG): Likewise.
(gregset_t): Likewise.

7 years agoRemove wrong definitions from pthread header refactor
Adhemerval Zanella [Thu, 11 May 2017 13:46:03 +0000 (10:46 -0300)]
Remove wrong definitions from pthread header refactor

This patch removes wrong struct definition from eab380d (Move shared
pthread definitions to common headers) on ARM and hppa.

Checked on arm-linux-gnueabihf.

* sysdeps/arm/nptl/bits/pthreadtypes-arch.h
(__pthread_rwlock_arch_t): Remove __data definition.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h
(__pthread_rwlock_arch_t): Likewise.

7 years agoinet_pton: Reformat in GNU style
Florian Weimer [Thu, 11 May 2017 12:48:51 +0000 (14:48 +0200)]
inet_pton: Reformat in GNU style

Generated machine code is identical on x86-64.

7 years agosupport_format_addrinfo: Fix flags and canonname formatting
Florian Weimer [Thu, 11 May 2017 09:32:16 +0000 (11:32 +0200)]
support_format_addrinfo: Fix flags and canonname formatting

The address family splitting via format_ai_family made unpredictable
the place where the canonname field was printed.  This commit adjusts
the implementation so that the ai_flags is checked for consistency
across the list, and ai_canonname must only be present on the first
list element.

Tests for AI_CANONNAME are added to resolv/tst-resolv-basic.

7 years agogetaddrinfo: Unconditionally use malloc for address list
Florian Weimer [Thu, 11 May 2017 08:01:49 +0000 (10:01 +0200)]
getaddrinfo: Unconditionally use malloc for address list

getaddrinfo has to call malloc eventually anyway, so the complexity
of avoiding malloc calls is not worth potential savings.

7 years agoUse test-driver in ntpl/tst-fork1.c
Andreas Schwab [Mon, 8 May 2017 15:49:59 +0000 (17:49 +0200)]
Use test-driver in ntpl/tst-fork1.c

7 years agoFix rawmemchr build with GCC 8.
Joseph Myers [Wed, 10 May 2017 00:25:59 +0000 (00:25 +0000)]
Fix rawmemchr build with GCC 8.

The default rawmemchr implementation uses memchr with size (size_t)-1,
which produces a warning with current GCC mainline.  The warning seems
reasonable for normal code, so this patch uses the DIAG_* macros to
disable it.

Tested (compilation of glibc only) with build-many-glibcs.py for
arm-linux-gnueabi and powerpc64le-linux-gnu, two architectures for
which the build was previously failing.  Note that the glibc testsuite
will still fail to build with GCC mainline because of
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80669>.

* string/rawmemchr.c: Include <libc-diag.h>.
(RAWMEMCHR): Disable -Wstringop-overflow around call to memchr
with size (size_t)-1.

7 years agoRemove MIPS32 accept4, recvmmsg, sendmmsg implementations.
Joseph Myers [Tue, 9 May 2017 23:16:19 +0000 (23:16 +0000)]
Remove MIPS32 accept4, recvmmsg, sendmmsg implementations.

MIPS32 has its own implementations of accept4, recvmmsg and sendmmsg
because at one point it needed to avoid socketcall being used for
those functions (MIPS32 has socketcall, but has never used it in
glibc, and so never had socket.S at the time when socketcall used such
a per-architecture file instead of C code).  The current code no
longer uses socketcall based on __NR_socketcall being defined, and the
syscalls are always present on MIPS for supported kernels so the
socketcall case in the code is dead for MIPS; this patch removes the
implementations that are, as Adhemerval noted, no longer needed.

Tested compilation for mips-linux-gnu with build-many-glibcs.py.

* sysdeps/unix/sysv/linux/mips/mips32/accept4.c: Remove file.
* sysdeps/unix/sysv/linux/mips/mips32/recvmmsg.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/sendmmsg.c: Likewise.

7 years agoSimplify accept4, recvmmsg, sendmmsg code.
Joseph Myers [Tue, 9 May 2017 21:59:36 +0000 (21:59 +0000)]
Simplify accept4, recvmmsg, sendmmsg code.

The accept4, recvmmsg and sendmmsg functions had macros
__ASSUME_*_SYSCALL_WITH_SOCKETCALL.  Before we could assume kernels
with the relevant functionality, these macros represented the
conditions under which, on a socketcall architecture, glibc could just
call the syscall unconditionally and not have to deal with socketcall
at all for those functions, because if the syscall didn't work for
them the socketcall call wouldn't either.

Now we can assume kernels with the relevant functionality, the only
question is whether we can assume the syscall is present; if not, we
are on a socketcall architecture and just use socketcall instead.
Thus, this patch removes the macros that are no longer necessary, and
simplifies the code for accept4, recvmmsg and sendmmsg to use the same
logic as the other C implementations of socket functions that may use
a syscall or socketcall depending on kernel support.

Tested for x86_64 and x86.

* sysdeps/unix/sysv/linux/accept4.c (accept4): Use syscall if
[__ASSUME_ACCEPT4_SYSCALL], otherwise socketcall.
* sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Use syscall if
[__ASSUME_RECVMMSG_SYSCALL], otherwise socketcall.
* sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Use syscall if
[__ASSUME_SENDMMSG_SYSCALL], otherwise socketcall.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_ACCEPT4_SYSCALL): Move to general list of macros for
socket syscalls.
(__ASSUME_RECVMMSG_SYSCALL): Likewise.
(__ASSUME_SENDMMSG_SYSCALL): Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Remove.
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Remove.
* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h
(__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.

7 years agoMove shared pthread definitions to common headers
Adhemerval Zanella [Tue, 4 Apr 2017 18:51:10 +0000 (15:51 -0300)]
Move shared pthread definitions to common headers

This patch removes all the replicated pthread definition accross the
architectures and consolidates it on shared headers.  The new
organization is as follow:

  * Architecture specific definition (such as pthread types sizes) are
    place in the new pthreadtypes-arch.h header in arch specific path.

  * All shared structure definition are moved to a common NPTL header
    at sysdeps/nptl/bits/pthreadtypes.h (with now includes the arch
    specific one for internal definitions).

  * Also, for C11 future thread support, both mutex and condition
    definition are placed in a common header at
    sysdeps/nptl/bits/thread-shared-types.h.

It is also a refactor patch without expected functional changes.
Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu,
arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu,
m68k-linux-gnu, microblaze-linux-gnu, mips{64}-linux-gnu, nios2-linux-gnu,
powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu,
tile{pro,gx}-linux-gnu, and x86_64-linux-gnu).

* posix/Makefile (headers): Add pthreadtypes-arch.h and
thread-shared-types.h.
* sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h: New file: arch
specific thread definition.
* sysdeps/alpha/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nptl/bits/thread-shared-types.h: New file: shared
thread definition between POSIX and C11.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h.: Remove file.
* sysdeps/alpha/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/nptl/bits/pthreadtypes.h: New file: common thread
definitions shared across all architectures.

7 years agoSimplify sendmmsg code.
Joseph Myers [Tue, 9 May 2017 20:01:52 +0000 (20:01 +0000)]
Simplify sendmmsg code.

Now we can assume a kernel with sendmmsg support, this patch
simplifies the implementation to be similar to that for accept4:
either using socketcall or the syscall according to whether the
syscall is known to be available, without further fallback
implementations.  The __ASSUME_SENDMMSG macro is kept (now defined
unconditionally), since it's used in resolv/res_send.c.

Tested for x86_64 and x86.

* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_SENDMMSG_SYSCALL): Define unconditionally.
(__ASSUME_SENDMMSG): Likewise.
(__ASSUME_SENDMMSG_SOCKETCALL): Remove macro.
* sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Define using
sendmmsg syscall if that can be assumed to be present, socketcall
otherwise, with no fallback for runtime failure.

7 years agoSimplify recvmmsg code.
Joseph Myers [Tue, 9 May 2017 20:01:01 +0000 (20:01 +0000)]
Simplify recvmmsg code.

Now we can assume a kernel with recvmmsg support, this patch
simplifies the implementation to be similar to that for accept4:
either using socketcall or the syscall according to whether the
syscall is known to be available, without further fallback
implementations.

(In fact further simplification is possible, getting rid of the
__ASSUME_*_SYSCALL_WITH_SOCKETCALL macros now that the minimum kernel
is guaranteed support for all of accept4, recvmmsg, sendmmsg, whether
through syscalls or through socketcall.  I intend to do that for all
of accept4 / recvmmsg / sendmmsg together - so making their
implementations just like those for older socket functions - once the
basic cleanup for 3.2 minimum kernel is done for sendmmsg as well as
recvmmsg.)

Tested for x86_64 and x86.

* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_RECVMMSG_SYSCALL): Define unconditionally.
(__ASSUME_RECVMMSG_SOCKETCALL): Remove macro.
(__ASSUME_RECVMMSG): Likewise.
* sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Define using
recvmmsg syscall if it can be assumed to be present, socketcall
otherwise, with no fallback for runtime failure.

7 years agoAdd support for testing __STDC_WANT_IEC_60559_TYPES_EXT__
Paul E. Murphy [Wed, 20 Jul 2016 17:14:21 +0000 (12:14 -0500)]
Add support for testing __STDC_WANT_IEC_60559_TYPES_EXT__

This macro is defined by TS 18661-3 for supporting the _FloatN and
_FloatNx types, as well as the functions suffixed with fN.

* bits/libc-header-start.h:
(__GLIBC_USE_IEC_60559_TYPES_EXT): New macro.
* include/features.h: Describe __STDC_WANT_IEC_60559_TYPES_EXT__.
* manual/creature.texi: Likewise.

7 years agofloat128: Add _Float128 make bits to libm.
Paul E. Murphy [Fri, 15 Jul 2016 19:05:51 +0000 (14:05 -0500)]
float128: Add _Float128 make bits to libm.

This adds the appropriate common bits for a platform to
enable float128 and expose ABI.

* math/Makefile:
(type-float128-suffix): New variable
(type-float128-routines): Likewise
(type-float128-yes): Likewise
(types): Append float128 if supported
(types-basic): New variable to control the use of templates for
float, double, and long double, but not for float128 or newer types.
(type-basic-foreach): Likewise.

* sysdeps/ieee754/float128/Makeconfig: New file.
* sysdeps/ieee754/float128/Versions: New file.

7 years agoAssume prlimit64 is available.
Joseph Myers [Tue, 9 May 2017 14:05:09 +0000 (14:05 +0000)]
Assume prlimit64 is available.

This patch makes sysdeps/unix/sysv/linux code assume the prlimit64
syscall is always available, given the minimum of a 3.2 kernel.

__ASSUME_PRLIMIT64, which in fact was no longer used, is removed.
Code conditional on __NR_prlimit64 being defined is made
unconditional.  Fallback code for the case where prlimit64 produces an
ENOSYS error is removed, substantially simplifying some functions.

Tested for x86_64 and x86.

* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PRLIMIT64):
Remove macro.
* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Assume
prlimit64 is always available and does not give an ENOSYS error.
* sysdeps/unix/sysv/linux/prlimit.c [__NR_prlimit64]: Make code
unconditional.
[!__NR_prlimit64]: Remove conditional code.
* sysdeps/unix/sysv/linux/setrlimit.c (__setrlimit): Assume
prlimit64 is always available and does not give an ENOSYS error.
* sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit64): Likewise.

7 years agosunrpc/tst-xdrmem2.c: Include stdint.h.
Zack Weinberg [Tue, 9 May 2017 11:50:56 +0000 (07:50 -0400)]
sunrpc/tst-xdrmem2.c: Include stdint.h.

7 years agoresolv: Use RES_DFLRETRY consistently [BZ #21474]
Florian Weimer [Tue, 9 May 2017 10:28:01 +0000 (12:28 +0200)]
resolv: Use RES_DFLRETRY consistently [BZ #21474]

7 years agoRename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk.
Zack Weinberg [Mon, 8 May 2017 19:52:26 +0000 (15:52 -0400)]
Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk.

cppflags-iterator.mk no longer has anything to do with CPPFLAGS; all
it does is set libof-$(foo) for a list of files.  extra-modules.mk
does the same thing, but with a different input variable, and doesn't
let the caller control the module.  Therefore, this patch gives
cppflags-iterator.mk a better name, removes extra-modules.mk, and
updates all uses of both.

* extra-modules.mk: Delete file.
* cppflags-iterator.mk: Rename to ...
* libof-iterator.mk: ...this.  Adjust comments.

* Makerules, extra-lib.mk, benchtests/Makefile, elf/Makefile
* elf/rtld-Rules, iconv/Makefile, locale/Makefile, malloc/Makefile
* nscd/Makefile, sunrpc/Makefile, sysdeps/s390/Makefile:
Use libof-iterator.mk instead of cppflags-iterator.mk or
extra-modules.mk.

* benchtests/strcoll-inputs/filelist#en_US.UTF-8: Remove
extra-modules.mk and cppflags-iterator.mk, add libof-iterator.mk.

7 years agoS390: Regenerate ULPs
Stefan Liebler [Tue, 9 May 2017 07:18:09 +0000 (09:18 +0200)]
S390: Regenerate ULPs

Updated ulps file - Needed if build with GCC 7.

ChangeLog:

* sysdeps/s390/fpu/libm-test-ulps: Regenerated.

7 years agovfprintf.c: Refactor magic number 32 into EXTSIZ.
Carlos O'Donell [Mon, 8 May 2017 20:11:45 +0000 (16:11 -0400)]
vfprintf.c: Refactor magic number 32 into EXTSIZ.

The magic number 32 is used everywhere as extra size to
use when doing certain operations. This commit refactors
that into a macro so you can change this value if you're
debugging something in a local build.

7 years agoRemove __ASSUME_PROC_PID_TASK_COMM.
Joseph Myers [Mon, 8 May 2017 16:44:54 +0000 (16:44 +0000)]
Remove __ASSUME_PROC_PID_TASK_COMM.

This patch removes the __ASSUME_PROC_PID_TASK_COMM macro, and
associated conditional code (in a testcase), now that 3.2 is the
global minimum Linux kernel version supported.

Tested for x86_64.

* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_PROC_PID_TASK_COMM): Remove macro.
* sysdeps/unix/sysv/linux/tst-setgetname.c: Do not include
<kernel-features.h>.
(do_test) [!__ASSUME_PROC_PID_TASK_COMM]: Remove conditional code.

7 years agoRemove __ASSUME_GETCPU_SYSCALL.
Joseph Myers [Mon, 8 May 2017 14:36:42 +0000 (14:36 +0000)]
Remove __ASSUME_GETCPU_SYSCALL.

This patch removes the definition of __ASSUME_GETCPU_SYSCALL.  In fact
this macro is unused, probably since:

commit dd26c44403582fdf10d663170f947dfe4b3207a0
Author: Adhemerval Zanella <adhemerval.zanella@linaro.com>
Date:   Wed Apr 22 14:21:39 2015 -0300

    Consolidate sched_getcpu

so it could have been removed even without the move to 3.2 as minimum
kernel version on x86_64.

Tested for x86_64.

* sysdeps/unix/sysv/linux/x86_64/kernel-features.h
(__ASSUME_GETCPU_SYSCALL): Remove macro.

7 years agosupport: Prevent multiple deletion of temporary files
Florian Weimer [Mon, 8 May 2017 12:57:59 +0000 (14:57 +0200)]
support: Prevent multiple deletion of temporary files

Otherwise, another user might recreate these files after the first
deletion.  Particularly with temporary directories, this could result
in the removal of unintended files through symbol link attacks.

7 years agosupport: Delete temporary files in LIFO order
Florian Weimer [Mon, 8 May 2017 12:32:58 +0000 (14:32 +0200)]
support: Delete temporary files in LIFO order

This is required to remove temporary directories which contain
temporary files.  Previously, FIFO order meant that directory
removal was attempted when the directory still contained files,
which meant that temporary directory cleanup was essentially
unsupported.

7 years agoRemove <sys/ultrasound.h>
Florian Weimer [Mon, 8 May 2017 12:59:21 +0000 (14:59 +0200)]
Remove <sys/ultrasound.h>

This header was once used for constants related to the Gravis
Ultrasound sound card.

7 years agoRequire Linux kernel 3.2 or later on x86 / x86_64.
Joseph Myers [Mon, 8 May 2017 10:45:20 +0000 (10:45 +0000)]
Require Linux kernel 3.2 or later on x86 / x86_64.

As per the recent discussion, this patch implements a requirement for
Linux 3.2 or later for x86 and x86_64.  This is only the initial
change to increase the configured minimum; it's expected that followup
patches would deal with associated removal of conditionals that are no
longer needed.  If we remove the start-up test on the kernel version,
of course the NEWS and README text should then be revised (to reflect
that this version is just one such that glibc does not intend to
include compatibility code for any older kernel version, rather than
older kernels necessarily failing to work or glibc necessarily having
compatibility code for newer interfaces).

The followups would be able to assume presence of getcpu (x86_64),
recvmmsg (not always through its own syscall, sometimes only through
socketcall), sendmmsg (likewise), /proc/$pid/task/$tid/comm, f_flags
from statfs, prlimit64.

Tested for x86_64 and x86.

* sysdeps/unix/sysv/linux/i386/configure.ac (arch_minimum_kernel):
Remove.
* sysdeps/unix/sysv/linux/i386/configure: Regenerated.
* sysdeps/unix/sysv/linux/x86_64/64/configure.ac
(arch_minimum_kernel): Remove.
* sysdeps/unix/sysv/linux/x86_64/64/configure: Regenerated.
* README: Update statement about Linux kernel requirements.

7 years agomanual: Add preadv and pwritev documentation
Adhemerval Zanella [Mon, 1 May 2017 19:38:56 +0000 (16:38 -0300)]
manual: Add preadv and pwritev documentation

* manual/llio.texi: Add preadv and pwritev documentation.

7 years agoFix network headers stdint.h namespace (bug 21455).
Joseph Myers [Thu, 4 May 2017 20:36:42 +0000 (20:36 +0000)]
Fix network headers stdint.h namespace (bug 21455).

conform/ namespace tests of arpa/inet.h, netdb.h and netinet/in.h fail
for UNIX98 and XPG42 because of inclusion of stdint.h, which defines
macros not permitted in those headers for those standards.  UNIX98
allows them to include inttypes.h, but (predating C99) has restricted
inttypes.h contents (not yet tested in the conform/ tests) not
including those macros; XPG4.2 has no such permission and no
inttypes.h / stdint.h at all.

This patch rearranges the headers to avoid this issue.  intN_t
definitions move to bits/stdint-intn.h, and uintN_t definitions to
bits/stdint-uintn.h.  (These are not bits/types/ headers because they
each define four types.  They are separate rather than just a single
header because sys/types.h defines intN_t but u_intN_t rather than
uintN_t - and while sys/types.h could define uintN_t because of the
POSIX reservation of *_t, existing practice there is largely to
condition types on appropriate feature test macros, and indeed there
is at least one open bug report (14553) about a type that's not
so-conditioned, so maybe types there should actually have conditions
added where appropriate.)  The affected network headers are then made
to include bits/stdint-uintn.h instead of stdint.h.  This allows six
XFAILs to be removed.

This doesn't do anything about inttypes.h defining more than it should
for UNIX98, but we don't have conformtest expectations for that case
at present (and my inclination is that a fix for that should be as
local as possible - affecting only inttypes.h, not stdint.h, only for
the case of __USE_UNIX98 && !__USE_ISOC99).

Tested for x86_64.

[BZ #21455]
* bits/stdint-intn.h: New file.
* bits/stdint-uintn.h: Likewise.
* stdlib/Makefile (headers): Add bits/stdint-intn.h and
bits/stdint-uintn.h.
* inet/netinet/in.h: Include <bits/stdint-uintn.h> instead of
<stdint.h>.
* posix/sys/types.h: Include <bits/stdint-intn.h>.
(__int8_t_defined): Do not define here.
(int8_t): Likewise.
(int16_t): Likewise.
(int32_t): Likewise.
(int64_t): Likewise.
[__GNUC_PREREQ (2, 7)] (__intN_t): Likewise.
* resolv/netdb.h: Include <bits/stdint-uintn.h> instead of
<stdint.h>.
* include/netdb.h [_ISOMAC]: Do not include <stdint.h>.
* sysdeps/generic/stdint.h: Include <bits/stdint-intn.h> and
<bits/stdint-uintn.h>.
(int8_t): Do not define here.
(int16_t): Likewise.
(int32_t): Likewise.
(int64_t): Likewise.
(uint8_t): Likewise.
(uint16_t): Likewise.
(uint32_t): Likewise.
(uint64_t): Likewise.
* conform/Makefile (test-xfail-XPG42/arpa/inet.h/conform): Remove
variable.
(test-xfail-XPG42/netdb.h/conform): Likewise.
(test-xfail-XPG42/netinet/in.h/conform): Likewise.
(test-xfail-UNIX98/arpa/inet.h/conform): Likewise.
(test-xfail-UNIX98/netdb.h/conform): Likewise.
(test-xfail-UNIX98/netinet/in.h/conform): Likewise.

7 years agoldbl-128: Use mathx_hidden_def inplace of hidden_def
Paul E. Murphy [Thu, 4 May 2017 17:47:27 +0000 (14:47 -0300)]
ldbl-128: Use mathx_hidden_def inplace of hidden_def

This provides a extra macro expansion before invoking
the hidden_def macro.  This is necessary to build the
ldbl-128 files as float128 correctly.

* sysdeps/generic/math_private.h:
(mathx_hidden_def): New macro.
* sysdeps/ieee754/ldbl-128/s_finitel.c: Replace hidden_def with
the above.
* sysdeps/ieee754/ldbl-128/s_isinfl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_isnanl.c: Likewise.

7 years agoFix signal.h bsd_signal namespace (bug 21445).
Joseph Myers [Thu, 4 May 2017 17:38:05 +0000 (17:38 +0000)]
Fix signal.h bsd_signal namespace (bug 21445).

signal.h declares bsd_signal for __USE_XOPEN.  But this function was
obsoleted in the 2001 edition of POSIX and removed in the 2008
edition, so it should not be declared when the 2008 edition is in use.
This patch fixes the conditionals accordingly.  (This does not fix any
conform/ test failures because of other namespace issues in signal.h.)

Tested for x86_64.

[BZ #21445]
* signal/signal.h [__USE_XOPEN2K8] (bsd_signal): Do not declare.

7 years agoUse __glibc_reserved convention in mcontext, sigcontext (bug 21457).
Joseph Myers [Thu, 4 May 2017 11:26:33 +0000 (11:26 +0000)]
Use __glibc_reserved convention in mcontext, sigcontext (bug 21457).

This patch implements the most straightforward part of fixing
namespace issues for sys/ucontext.h and related headers: where fields
in sys/ucontext.h or bits/sigcontext.h are named "reserved", "padding"
or similar, they are renamed to use the __glibc_reserved* naming
convention.  It does not change fields with a leading underscore, or
even those with a prefix such as uc_ or sc_.  It only fixes a small
part of bug 21457, so no XFAILs are removed.

Tested for x86_64 and x86, and with build-many-glibcs.py.

[BZ #21457]
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
[_MIPS_SIM != _ABIO32] (mcontext_t): Rename field reserved to
__glibc_reserved1.
* sysdeps/unix/sysv/linux/x86/bits/sigcontext.h
(struct _fpx_sw_bytes): Rename field padding to __glibc_reserved1.
(struct _fpxreg): Likewise.
[!__x86_64__] (struct _fpstate): Rename field reserved to
__glibc_reserved1.  Rename field padding to __glibc_reserved2.
[__x86_64__] (struct _fpstate): Rename field padding to
__glibc_reserved1.
(struct _xsave_hdr): Rename field reserved1 to __glibc_reserved1.
Rename field reserved2 to __glibc_reserved2.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h
[__x86_64__] (struct _libc_fpxreg): Rename field padding to
__glibc_reserved1.
[__x86_64__] (struct _libc_fpstate): Rename field padding to
__glibc_reserved1.

7 years agopowerpc: Fix strncat ifunc selection
Rajalakshmi Srinivasaraghavan [Thu, 4 May 2017 07:05:56 +0000 (12:35 +0530)]
powerpc: Fix strncat ifunc selection

Correct hwcap usage in strncat introduced by commit
249dcdb71b79e4c488a46c9027e0014c0bc27044.
Tested on power7 and power8 systems

7 years agox86: Set dl_platform and dl_hwcap from CPU features [BZ #21391]
H.J. Lu [Wed, 3 May 2017 20:42:42 +0000 (13:42 -0700)]
x86: Set dl_platform and dl_hwcap from CPU features [BZ #21391]

dl_platform and dl_hwcap are set from AT_PLATFORM and AT_HWCAP very
early during startup.  They are used by dynamic linker to determine
platform and build an array of hardware capability names, which are
added to search path when loading shared object.  dl_platform and
dl_hwcap are unused on x86-64.  On i386, i386, i486, i586 and i686
platforms were supported and only SSE2 capability was used.

On x86, usage of AT_PLATFORM and AT_HWCAP to determine platform and
processor capabilities is obsolete since all information is available
in dl_x86_cpu_features.  This patch sets dl_platform and dl_hwcap from
dl_x86_cpu_features in dynamic linker.  On i386, the available plaforms
are changed to i586 and i686 since i386 has been deprecated.  On x86-64,
the available plaforms are haswell, which is for Haswell class processors
with BMI1, BMI2, LZCNT, MOVBE, POPCNT, AVX2 and FMA, and xeon_phi, which
is for Xeon Phi class processors with AVX512F, AVX512CD, AVX512ER and
AVX512PF.  A capability, avx512_1, is also added to x86-64 for AVX512
ISAs: AVX512F, AVX512CD, AVX512BW, AVX512DQ and AVX512VL.

[BZ #21391]
* sysdeps/i386/dl-machine.h (dl_platform_init) [IS_IN (rtld)]:
Only call init_cpu_features.
[!IS_IN (rtld)]: Only set GLRO(dl_platform) to NULL if needed.
* sysdeps/x86_64/dl-machine.h (dl_platform_init): Likewise.
* sysdeps/i386/dl-procinfo.h: Removed.
* sysdeps/unix/sysv/linux/i386/dl-procinfo.h: Don't include
<sysdeps/i386/dl-procinfo.h> nor <ldsodefs.h>.  Include
<sysdeps/x86/dl-procinfo.h>.
(_dl_procinfo): Replace _DL_HWCAP_COUNT with 32.
* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h [!IS_IN (ldconfig)]:
Include <sysdeps/x86/dl-procinfo.h> instead of
 <sysdeps/generic/dl-procinfo.h>.
* sysdeps/x86/cpu-features.c: Include <dl-hwcap.h>.
(init_cpu_features): Set dl_platform, dl_hwcap and dl_hwcap_mask.
* sysdeps/x86/cpu-features.h (bit_cpu_LZCNT): New.
(bit_cpu_MOVBE): Likewise.
(bit_cpu_BMI1): Likewise.
(bit_cpu_BMI2): Likewise.
(index_cpu_BMI1): Likewise.
(index_cpu_BMI2): Likewise.
(index_cpu_LZCNT): Likewise.
(index_cpu_MOVBE): Likewise.
(index_cpu_POPCNT): Likewise.
(reg_BMI1): Likewise.
(reg_BMI2): Likewise.
(reg_LZCNT): Likewise.
(reg_MOVBE): Likewise.
(reg_POPCNT): Likewise.
* sysdeps/x86/dl-hwcap.h: New file.
* sysdeps/x86/dl-procinfo.h: Likewise.
* sysdeps/x86/dl-procinfo.c (_dl_x86_hwcap_flags): New.
(_dl_x86_platforms): Likewise.

7 years agoTweak realloc/MREMAP comment to be more accurate.
DJ Delorie [Wed, 3 May 2017 20:25:15 +0000 (16:25 -0400)]
Tweak realloc/MREMAP comment to be more accurate.

MMap'd memory isn't shrunk without MREMAP, but IIRC this is intentional for
performance reasons.  Regardless, this patch tweaks the existing comment to
be more accurate wrt the existing code.

[BZ #21411]
* malloc/malloc.c: Tweak realloc/MREMAP comment to be more accurate.

7 years agoCorrect misplaced comments in struct ip_mreq_source
Phil Blundell [Wed, 3 May 2017 19:35:35 +0000 (20:35 +0100)]
Correct misplaced comments in struct ip_mreq_source

7 years agoBug 20686: Add el_GR@euro support.
Carlos O'Donell [Wed, 3 May 2017 19:37:04 +0000 (15:37 -0400)]
Bug 20686: Add el_GR@euro support.

Despite the fact that el_GR is ISO-8859-7:2003 which contains the euro
symobl, it is not possible to know this apriori to selecting the el_GR
locale. Therefore you don't know if el_GR can possibly have the 2003
ammendments which include the euro symbol. This is resolved by creating
an el_GR@euro locale similar to all the other @euro locales for non-UTF8
charsets.

7 years agoBug 20116: Clarify behaviour of PD->lock.
Carlos O'Donell [Wed, 3 May 2017 19:24:43 +0000 (15:24 -0400)]
Bug 20116: Clarify behaviour of PD->lock.

Add comments to the concurrency notes to clarify the semaphore-like and
mutex-like behaviours of PD->lock.

7 years agoConsolidate Linux epoll_wait syscall
Adhemerval Zanella [Mon, 21 Nov 2016 19:40:19 +0000 (17:40 -0200)]
Consolidate Linux epoll_wait syscall

This patch consolidates the epoll_wait Linux syscall generation on
sysdeps/unix/sysv/linux/epoll_wait.c.  The implementation tries to
use __NR_epoll_wait if defined, otherwise calls epoll_pwait.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* sysdeps/unix/sysv/linux/epoll_wait.c: New file.
* sysdeps/unix/sysv/linux/generic/epoll_wait.c: Remove file.
* sysdeps/unix/sysv/linux/syscalls.list: Remove epoll_wait from
auto-generation list.

7 years agoConsolidate Linux select implementation
Adhemerval Zanella [Fri, 18 Nov 2016 16:27:03 +0000 (14:27 -0200)]
Consolidate Linux select implementation

This patch consolidates the select Linux syscall implementation on
sysdeps/unix/sysv/linux/select.c.  The changes are:

  1. Remove select from auto-generation syscalls.list on the architecture
     that uses __NR_select.
  2. Remove generic implementation add a default one that handle all
     current cases (with the expection of alpha)
     The new default implementation will either use __NR_select if
     available of fallback to __NR_pselect6 otherwise.
  3. Add a alpha outlier implementation which requires old compatibility
     symbols.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Add
osf_select.
* sysdeps/unix/sysv/linux/alpha/select.c: New file.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove select and
osf_select from auto-generation list.
* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/generic/select.c: Remove file.
* sysdeps/unix/sysv/linux/select.c: New file.

7 years agoConsolidate Linux poll implementation
Adhemerval Zanella [Fri, 18 Nov 2016 15:56:05 +0000 (13:56 -0200)]
Consolidate Linux poll implementation

This patch consolidates the poll Linux syscall implementation on
sysdeps/unix/sysv/linux/poll.c.  It basically removes poll from
auto-generation list and add a default implementation that either
call __NR_poll directly (if the kernel headers defines it) or
ppoll adjusting the timeout argument (as the generic implementation).

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

* sysdeps/unix/sysv/linux/generic/poll.c: Remove file.
* sysdeps/unix/sysv/linux/poll.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Remove poll from
auto-generation list.

7 years agoAdd HWCAP_ASIMDRDM from Linux 4.11 to AArch64 bits/hwcap.h.
Joseph Myers [Wed, 3 May 2017 11:04:07 +0000 (11:04 +0000)]
Add HWCAP_ASIMDRDM from Linux 4.11 to AArch64 bits/hwcap.h.

This patch adds the HWCAP_ASIMDRDM macro from Linux 4.11 to the
AArch64 bits/hwcap.h.

Tested (compilation only) with build-many-glibcs.py.

* sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h (HWCAP_ASIMDRDM):
New macro.

7 years agosparc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
Vladimir Mezentsev [Tue, 2 May 2017 19:55:48 +0000 (16:55 -0300)]
sparc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs

The Studio compiler generates relocation types which are not supported
in glibc. Handle these relocs.

Tested in sparc64-linux-gnu. No regressions.

BZ #21179]
* sysdeps/sparc/sparc64/dl-machine.h: Handle R_SPARC_DISP64 and
R_SPARC_REGISTER relocations.

7 years agoposix: Fix internal p{read,write} plt usage
Adhemerval Zanella [Wed, 26 Apr 2017 21:34:47 +0000 (18:34 -0300)]
posix: Fix internal p{read,write} plt usage

This patch adds internal alias for __pread, __pread64, and __pwrite
following the already in place one for __pwrite64.  This is not used
in any implementation but on microblaze on preadv/pwritev fallback
(since it does not define __ASSUME_PREADV).

In fact it was signaled by commit c35db50ff5 which update the expected
localptl.data for the architecture based on resulted value.  This patch
updates the plt for microblaze now that p{read,write}{64} are correctly
routed to use internal alias.

Checked on x86_64-linux-gnu and a build for all supported architectures
(no all variants although).

* include/unistd.h (__pread): Add libc_hidden_proto.
(__pread64): Likewise.
(__pwrite): Likewise.
* sysdeps/unix/sysv/linux/microblaze/localplt.data [libc.so]
(__pread64): Remove.
* sysdeps/unix/sysv/linux/pread.c (__pread64): Add libc_hidden_weak.
* sysdeps/unix/sysv/linux/pread64.c (__pread64): Likewise.
* sysdeps/unix/sysv/linux/pwrite.c (__pwrite): Likewise.

7 years agopowerpc: Update powerpc-fpu libm-test-ulps
Tulio Magno Quites Machado Filho [Tue, 2 May 2017 16:38:29 +0000 (13:38 -0300)]
powerpc: Update powerpc-fpu libm-test-ulps

* sysdeps/powerpc/fpu/libm-test-ulps: Update.

7 years agonptl: Using libsupport for tst-cancel4*
Adhemerval Zanella [Tue, 25 Apr 2017 21:56:46 +0000 (18:56 -0300)]
nptl: Using libsupport for tst-cancel4*

Checked on x86_64-linux-gnu.

* nptl/tst-cancel4-common.c: Use libsupport.
* nptl/tst-cancel4-common.h: Likewise.
* nptl/tst-cancel4.c (tf_read): Likewise.
(tf_readv): Likewise.
(tf_write): Likewise.
(tf_writev): Likewise.
(tf_sleep): Likewise.
(tf_usleep): Likewise.
(tf_nanosleep): Likewise.
(tf_select): Likewise.
(tf_pselect): Likewise.
(tf_poll): Likewise.
(tf_ppoll): Likewise.
(tf_wait): Likewise.
(tf_waitpid): Likewise.
(tf_waitid): Likewise.
(tf_sigpause): Likewise.
(tf_sigsuspend): Likewise.
(tf_sigwait): Likewise.
(tf_sigwaitinfo): Likewise.
(tf_sigtimedwait): Likewise.
(tf_pause): Likewise.
(tf_accept): Likewise.
(tf_send): Likewise.
(tf_recv): Likewise.
(tf_recvfrom): Likewise.
(tf_recvmsg): Likewise.
(tf_open): Likewise.
(tf_close): Likewise.
(tf_pread): Likewise.
(tf_pwrite): Likewise.
(tf_preadv): Likewise.
(tf_pwritev): Likewise.
(tf_fsync): Likewise.
(tf_fdatasync): Likewise.
(tf_msync): Likewise.
(tf_sendto): Likewise.
(tf_sendmsg): Likewise.
(tf_creat): Likewise.
(tf_connect): Likewise.
(tf_tcdrain): Likewise.
(tf_msgrcv): Likewise.
(tf_msgsnd): Likewise.
* nptl/tst-cancel4_1.c (tf_sendmmsg): Likewise.
* nptl/tst-cancel4_2.c (tf_recvmmsg): Likewise.

7 years agoposix: Using libsupport for p{write,read}v tests
Adhemerval Zanella [Fri, 21 Apr 2017 21:45:27 +0000 (18:45 -0300)]
posix: Using libsupport for p{write,read}v tests

Checked on x86_64-linux-gnu.

* misc/tst-preadvwritev-common.c (do_prepare): Use libsupport
expected arguments.
(do_test): Adapt to use libsupport.

7 years agoAdd TCP_FASTOPEN_CONNECT from Linux 4.11 to netinet/tcp.h.
Joseph Myers [Mon, 1 May 2017 16:18:31 +0000 (16:18 +0000)]
Add TCP_FASTOPEN_CONNECT from Linux 4.11 to netinet/tcp.h.

This patch adds the TCP_FASTOPEN_CONNECT macro from Linux 4.11 to
sysdeps/gnu/netinet/tcp.h.

Tested for x86-64.

* sysdeps/gnu/netinet/tcp.h (TCP_FASTOPEN_CONNECT): New macro.

7 years agoAdd PF_SMC, AF_SMC from Linux 4.11 to bits/socket.h.
Joseph Myers [Mon, 1 May 2017 15:11:33 +0000 (15:11 +0000)]
Add PF_SMC, AF_SMC from Linux 4.11 to bits/socket.h.

This patch adds the PF_SMC / AF_SMC macros from Linux 4.11 to
sysdeps/unix/sysv/linux/bits/socket.h.

Tested for x86_64.

* sysdeps/unix/sysv/linux/bits/socket.h (PF_SMC): New macro.
(PF_MAX): Set to 44.
(AF_SMC): New macro.

7 years agoDefault Linux kernel version in build-many-glibcs.py to 4.11.
Joseph Myers [Mon, 1 May 2017 11:15:43 +0000 (11:15 +0000)]
Default Linux kernel version in build-many-glibcs.py to 4.11.

* scripts/build-many-glibcs.py (Context.checkout): Default Linux
kernel version to 4.11.

7 years agopowerpc: Fix logbl on power7 [BZ# 21280]
Tulio Magno Quites Machado Filho [Fri, 28 Apr 2017 22:45:52 +0000 (19:45 -0300)]
powerpc: Fix logbl on power7 [BZ# 21280]

 1. Fix the results for negative subnormals by ignoring the signal when
    normalizing the value.
 2. Fix the output when the high part is a power of 2 and the low part
    is a nonzero number with opposite sign.  This fix is based on commit
    380bd0fd2418f8988217de950f8b8ff18af0cb2b.

After applying this patch, logbl() tests pass cleanly on POWER >= 7.

Tested on powerpc, powerpc64 and powerpc64le

[BZ #21280]
* sysdeps/powerpc/power7/fpu/s_logbl.c (__logbl): Ignore the
signal of subnormals and adjust the exponent of power of 2 down
when low part has opposite sign.

7 years agopowerpc64le: Create divergent sysdep directory for powerpc64le.
Paul E. Murphy [Fri, 15 Jul 2016 23:04:40 +0000 (18:04 -0500)]
powerpc64le: Create divergent sysdep directory for powerpc64le.

float128 on powerpc64le requires the addition of the ieee754/float128
sysdep, whereas powerpc64 doesn't.  This requires creating a bunch of
submachine and cpu directories and Implies files which just point
towards their powerpc64 equivalent.

Tested on P7, P8, and generic powerpc64le targets with and without
multiarch.

* sysdeps/powerpc/powerpc64le/Implies: New file.
* sysdeps/powerpc/powerpc64le/fpu/Implies: New file.
* sysdeps/powerpc/powerpc64le/fpu/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/power7/Implies: New file.
* sysdeps/powerpc/powerpc64le/power7/fpu/Implies: New file.
* sysdeps/powerpc/powerpc64le/power7/fpu/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/power7/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/power8/Implies: New file.
* sysdeps/powerpc/powerpc64le/power8/fpu/Implies: New file.
* sysdeps/powerpc/powerpc64le/power8/fpu/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/power8/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/power9/Implies: New file.
* sysdeps/powerpc/powerpc64le/power9/fpu/Implies: New file.
* sysdeps/powerpc/powerpc64le/power9/fpu/multiarch/Implies: New file.
* sysdeps/powerpc/powerpc64le/power9/multiarch/Implies: New file.
* sysdeps/powerpc/preconfigure: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64le/Implies: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64le/fpu/Implies: New file.

7 years agoconformtest: Allow time.h inclusion from semaphore.h for XOPEN2K.
Joseph Myers [Fri, 28 Apr 2017 16:52:16 +0000 (16:52 +0000)]
conformtest: Allow time.h inclusion from semaphore.h for XOPEN2K.

POSIX.1:2001 added sem_timedwait, but said nothing about defining
struct timespec in semaphore.h.  The 2008 edition added a
corresponding permission to include <time.h> from <semaphore.h>.
Since this is the normal POSIX approach in such cases, it seems
appropriate to consider this a bug fix, and so this patch makes the
conform/ tests allow that inclusion for POSIX.1:2001 as well.

Tested for x86_64.

* conform/data/semaphore.h-data [XOPEN2K] (time.h): Allow header
inclusion.
* conform/Makefile (test-xfail-XOPEN2K/semaphore.h/conform):
Remove.

7 years agoconformtest: Fix XPG standard naming.
Joseph Myers [Thu, 27 Apr 2017 20:29:35 +0000 (20:29 +0000)]
conformtest: Fix XPG standard naming.

The conform/ tests test -D_XOPEN_SOURCE under the name "XPG3", and
-D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED under the name "XPG4".

That naming is misleading.  _XOPEN_SOURCE_EXTENDED actually means
XPG4.2, including UX-shaded interfaces.  _XOPEN_SOURCE actually means
XPG4, or XPG4.2 without UX-shaded interfaces.  (Prior XPG versions
also used _XOPEN_SOURCE, but without any versioning of the values of
the macro, so XPG4.2 without UX-shaded interfaces is the only sensible
set of interfaces for glibc to expose given _XOPEN_SOURCE=1 without
_XOPEN_SOURCE_EXTENDED defined.)

This patch fixes the naming in the conform/ tests, so that what is now
called XPG4 is changed to XPG42, and what is now called XPG3 is
changed to XPG4.

Tested for x86_64 (and verified the complete set of expectations is
unchanged by the patch beyond the intended renaming).

* conform/GlibcConform.pm (XPG4): Rename standard to XPG42.
(XPG3): Rename standard to XPG4.
* conform/Makefile: Likewise.
* conform/list-header-symbols.pl: Likewise.
* conform/data/aio.h-data: Likewise.
* conform/data/arpa/inet.h-data: Likewise.
* conform/data/complex.h-data: Likewise.
* conform/data/ctype.h-data: Likewise.
* conform/data/dlfcn.h-data: Likewise.
* conform/data/fcntl.h-data: Likewise.
* conform/data/fenv.h-data: Likewise.
* conform/data/float.h-data: Likewise.
* conform/data/fmtmsg.h-data: Likewise.
* conform/data/ftw.h-data: Likewise.
* conform/data/grp.h-data: Likewise.
* conform/data/inttypes.h-data: Likewise.
* conform/data/iso646.h-data: Likewise.
* conform/data/langinfo.h-data: Likewise.
* conform/data/libgen.h-data: Likewise.
* conform/data/limits.h-data: Likewise.
* conform/data/locale.h-data: Likewise.
* conform/data/math.h-data: Likewise.
* conform/data/mqueue.h-data: Likewise.
* conform/data/ndbm.h-data: Likewise.
* conform/data/net/if.h-data: Likewise.
* conform/data/netdb.h-data: Likewise.
* conform/data/netinet/in.h-data: Likewise.
* conform/data/poll.h-data: Likewise.
* conform/data/pthread.h-data: Likewise.
* conform/data/pwd.h-data: Likewise.
* conform/data/sched.h-data: Likewise.
* conform/data/search.h-data: Likewise.
* conform/data/semaphore.h-data: Likewise.
* conform/data/signal.h-data: Likewise.
* conform/data/spawn.h-data: Likewise.
* conform/data/stdbool.h-data: Likewise.
* conform/data/stdint.h-data: Likewise.
* conform/data/stdio.h-data: Likewise.
* conform/data/stdlib.h-data: Likewise.
* conform/data/string.h-data: Likewise.
* conform/data/strings.h-data: Likewise.
* conform/data/stropts.h-data: Likewise.
* conform/data/sys/mman.h-data: Likewise.
* conform/data/sys/resource.h-data: Likewise.
* conform/data/sys/select.h-data: Likewise.
* conform/data/sys/socket.h-data: Likewise.
* conform/data/sys/stat.h-data: Likewise.
* conform/data/sys/statvfs.h-data: Likewise.
* conform/data/sys/time.h-data: Likewise.
* conform/data/sys/timeb.h-data: Likewise.
* conform/data/sys/types.h-data: Likewise.
* conform/data/sys/uio.h-data: Likewise.
* conform/data/sys/un.h-data: Likewise.
* conform/data/sys/wait.h-data: Likewise.
* conform/data/syslog.h-data: Likewise.
* conform/data/termios.h-data: Likewise.
* conform/data/tgmath.h-data: Likewise.
* conform/data/time.h-data: Likewise.
* conform/data/ucontext.h-data: Likewise.
* conform/data/unistd.h-data: Likewise.
* conform/data/utmpx.h-data: Likewise.
* conform/data/varargs.h-data: Likewise.
* conform/data/wchar.h-data: Likewise.
* conform/data/wctype.h-data: Likewise.

7 years agoDefault build-many-glibcs.py to GCC 7 branch.
Joseph Myers [Wed, 26 Apr 2017 15:26:47 +0000 (15:26 +0000)]
Default build-many-glibcs.py to GCC 7 branch.

Now there is a GCC 7 release branch, this patch makes
build-many-glibcs.py default to using it instead of GCC 6.

Relative to GCC 6, this fixes the MicroBlaze build but introduces ICEs
building glibc testcases for SH (GCC PRs 78459, 78460; the latter is
an out-of-memory issue so you may want to set memory limits when
running build-many-glibcs.py).

* scripts/build-many-glibcs.py (Context.checkout): Default gcc
version to 7 branch.

7 years agoAdd earlyclobber to sqrtt/sqrtf insns.
Uros Bizjak [Fri, 14 Apr 2017 12:30:57 +0000 (14:30 +0200)]
Add earlyclobber to sqrtt/sqrtf insns.

When using software completions, we have to prevent assembler to match
input and output operands of sqrtt/sqrtf insn. Add earlyclobber to
output operand to avoid unwanted operand matching.

2017-04-14  Uros Bizjak  <ubizjak@gmail.com>

    * sysdeps/alpha/fpu/math_private.h (__ieee754_sqrt): Add
    earlyclobber to output operand of sqrt insn.
    (__ieee754_sqrtf): Ditto.

7 years agoFix sys/socket.h namespace issues from sys/uio.h inclusion (bug 21426).
Joseph Myers [Tue, 25 Apr 2017 17:52:47 +0000 (17:52 +0000)]
Fix sys/socket.h namespace issues from sys/uio.h inclusion (bug 21426).

sys/socket.h includes sys/uio.h to get the definition of the iovec
structure.

POSIX allows sys/socket.h to make all sys/uio.h symbols visible.
However, all of sys/uio.h is XSI-shaded, so for non-XSI POSIX this
results in conformtest failures (for sys/socket.h and other headers
that include it):

    Namespace violation: "UIO_MAXIOV"
    Namespace violation: "readv"
    Namespace violation: "writev"

Now, there is some ambiguity in POSIX about what namespace
reservations apply in this case - see
http://austingroupbugs.net/view.php?id=1127 - but glibc convention
would still avoid declaring readv and writev, for example, for feature
test macros that don't include them (if only headers from the relevant
standard are included), even if such declarations are permitted, so
there is a bug here according to glibc conventions.

This patch moves the struct iovec definition to a new
bits/types/struct_iovec.h header and includes that from sys/socket.h
instead of including the whole of sys/uio.h.  This fixes the namespace
issue; however, three files in glibc that were relying on the implicit
inclusion needed to be updated to include sys/uio.h explicitly.  So
there is a question of whether sys/socket.h should continue to include
sys/uio.h under some conditions, such as __USE_XOPEN or __USE_MISC or
__USE_XOPEN || __USE_MISC, for greater compatibility with code that
(wrongly) expects this optional inclusion to be present there.  (I
think the three affected files in glibc should still have explicit
sys/uio.h inclusions added in any case, however.)

Tested for x86_64.

[BZ #21426]
* misc/bits/types/struct_iovec.h: New file.
* misc/Makefile (headers): Add bits/types/struct_iovec.h.
* include/bits/types/struct_iovec.h: New file.
* bits/uio.h (struct iovec): Replace by inclusion of
<bits/types/struct_iovec.h>.
* sysdeps/unix/sysv/linux/bits/uio.h (struct iovec): Likewise.
* socket/sys/socket.h: Include <bits/types/struct_iovec.h> instead
of <sys/uio.h>.
* nptl/tst-cancel4.c: Include <sys/uio.h>
* posix/test-errno.c: Likewise.
* support/resolv_test.c: Likewise.
* conform/Makefile (test-xfail-POSIX2008/arpa/inet.h/conform):
Remove.
(test-xfail-POSIX2008/netdb.h/conform): Likewise.
(test-xfail-POSIX2008/netinet/in.h/conform): Likewise.
(test-xfail-POSIX2008/sys/socket.h/conform): Likewise.

7 years agoconformtest: Allow *_t in sys/socket.h.
Joseph Myers [Tue, 25 Apr 2017 16:00:28 +0000 (16:00 +0000)]
conformtest: Allow *_t in sys/socket.h.

The conformtest expectations in sys/socket.h are missing the standard
POSIX allowance for all headers to define *_t names.  For XSI standard
versions that allowance comes in via the permission to include
<sys/uio.h> (for which the expectations properly allow *_t), but for
non-XSI POSIX nothing brings in that allowance and spurious namespace
failures occur.  This patch adds the required permission to the
expectations to remove the spurious failures (by itself this does not
allow any XFAILs to be removed).

Tested for x86_64.

* conform/data/sys/socket.h-data (*_t): Allow.

7 years agoposix: Remove ununsed posix_spawn internal assignment
Adhemerval Zanella [Mon, 24 Apr 2017 12:43:41 +0000 (09:43 -0300)]
posix: Remove ununsed posix_spawn internal assignment

The internal 'ret' variable in '__spawni_child' function is not
used after assignment in most cases.

Checked on x86_64-linux-gnu.

* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Remove ununsed
assignment.

7 years ago[BZ 21340] add support for POSIX_SPAWN_SETSID
Adhemerval Zanella [Fri, 21 Apr 2017 13:40:56 +0000 (10:40 -0300)]
[BZ 21340] add support for POSIX_SPAWN_SETSID

This patch adds support for the POSIX_SPAWN_SETSID flag.

It was recently accepted by the Austin Group:
http://austingroupbugs.net/view.php?id=1044

Checked on x86_64

Daurnimator  <quae@daurnimator.com>
Adhemerval Zanella  <adhemerval.zanella@linaro.org>

[BZ #21340]
* posix/Makefile (tests): Add tst-posix_spawn-setsid to list of tests.
* posix/spawn.h: define POSIX_SPAWN_SETSID flag.
* posix/spawnattr_setflags.c (ALL_FLAGS): Add POSIX_SPAWN_SETSID to
valid flags.
* posix/tst-posix_spawn-setsid.c: Add test for POSIX_SPAWN_SETSID.
* sysdeps/mach/hurd/spawni.c (__spawni): Implementation of
POSIX_SPAWN_SETSID.
* sysdeps/posix/spawni.c (__spawni): Likewise.
* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Likewise.
* NEWS: Add note about POSIX_SPAWN_SETSID support.

7 years agoMacroize function declarations in math_private.h
Gabriel F. T. Gomes [Tue, 28 Mar 2017 12:48:42 +0000 (09:48 -0300)]
Macroize function declarations in math_private.h

This patch moves the declaration of many floating-point functions from
math_private.h to math_private_calls.h and macroize the declaration to
be dependent on floating-point type.  For each of float, double, and
long double, the new header file is included once.  This reduces the
amount of repetitive boilerplate that will be required when adding
float128 versions of these functions.

Tested for powerpc64le and s390x.

* sysdeps/generic/math_private.h: Move the declaration of many
functions to sysdeps/generic/math_private_calls.h.
* sysdeps/generic/math_private_calls.h: New file with the
declarations of the functions removed from math_private.h
macroized by floating-point type.

7 years agoS390: Move utf8-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr macro.
Stefan Liebler [Fri, 21 Apr 2017 13:30:00 +0000 (15:30 +0200)]
S390: Move utf8-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr macro.

The utf8-utf32-z9.c iconv module is using ifunc and thus the ifunc part should
be in multiarch folder.  Otherwise ifunc is used even if you configure
with --disable-multi-arch.

This patch moves the ifunc resolvers to the new file
sysdeps/s390/multiarch/utf8-utf32-z9.c. The resolvers are now implemented
with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly.

The ifunc versions are implemented in sysdeps/s390/utf8-utf32-z9.c.
Each version is only implemented if needed or supported.  Therefore there is
a block at beginning of the file which selects the versions which should be
defined depending on support for multiarch, vector-support and used minimum
architecture level.  This block defines HAVE_[FROM|TO]_[C|CU|VX] to 1 or 0.
The code below is rearranged and surrounded
by #if HAVE_[FROM|TO]_[C|CU|VX] == 1.  There is no functional change.

The cu instructions are z9 zarch instructions.  As the major distros are
already using the newer z196 as architecture level set, those instructions
can be used as fallback version instead of the c-code.  This behaviour is
decided at compile time via HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT.

ChangeLog:

* sysdeps/s390/multiarch/utf8-utf32-z9.c: New File.
* sysdeps/s390/utf8-utf32-z9.c: Move ifunc resolvers to multiarch
folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|CU|VX].
(HAVE_FROM_C, HAVE_FROM_CU, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX,
FROM_LOOP_DEFAULT, FROM_LOOP_C, FROM_LOOP_CU, FROM_LOOP_VX,
TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX): New Define.

7 years agoS390: Move utf16-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr macro.
Stefan Liebler [Fri, 21 Apr 2017 13:30:00 +0000 (15:30 +0200)]
S390: Move utf16-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr macro.

The utf16-utf32-z9.c iconv module is using ifunc and thus the ifunc part should
be in multiarch folder.  Otherwise ifunc is used even if you configure
with --disable-multi-arch.

This patch moves the ifunc resolvers to the new file
sysdeps/s390/multiarch/utf16-utf32-z9.c. The resolvers are now implemented
with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly.

The ifunc versions are implemented in sysdeps/s390/utf16-utf32-z9.c.
Each version is only implemented if needed or supported.  Therefore there is
a block at beginning of the file which selects the versions which should be
defined depending on support for multiarch, vector-support and used minimum
architecture level.  This block defines HAVE_[FROM|TO]_[C|VX] to 1 or 0.
The code below is rearranged and surrounded
by #if HAVE_[FROM|TO]_[C|VX] == 1.  There is no functional change.

ChangeLog:

* sysdeps/s390/multiarch/utf16-utf32-z9.c: New File.
* sysdeps/s390/utf16-utf32-z9.c: Move ifunc resolvers to multiarch
folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|VX].
(HAVE_FROM_C, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX, FROM_LOOP_DEFAULT,
FROM_LOOP_C, FROM_LOOP_VX, TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX):
New Define.

7 years agoS390: Move utf8-utf16-z9.c to multiarch folder and use s390_libc_ifunc_expr macro.
Stefan Liebler [Fri, 21 Apr 2017 13:30:00 +0000 (15:30 +0200)]
S390: Move utf8-utf16-z9.c to multiarch folder and use s390_libc_ifunc_expr macro.

The utf8-utf16-z9.c iconv module is using ifunc and thus the ifunc part should
be in multiarch folder.  Otherwise ifunc is used even if you configure
with --disable-multi-arch.

This patch moves the ifunc resolvers to the new file
sysdeps/s390/multiarch/utf8-utf16-z9.c. The resolvers are now implemented
with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly.

The ifunc versions are implemented in sysdeps/s390/utf8-utf16-z9.c.
Each version is only implemented if needed or supported.  Therefore there is
a block at beginning of the file which selects the versions which should be
defined depending on support for multiarch, vector-support and used minimum
architecture level.  This block defines HAVE_[FROM|TO]_[C|CU|VX] to 1 or 0.
The code below is rearranged and surrounded
by #if HAVE_[FROM|TO]_[C|CU|VX] == 1.  There is no functional change.

The cu instructions are z9 zarch instructions.  As the major distros are
already using the newer z196 as architecture level set, those instructions
can be used as fallback version instead of the c-code.  This behaviour is
decided at compile time via HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT.

ChangeLog:

* sysdeps/s390/multiarch/utf8-utf16-z9.c: New File.
* sysdeps/s390/utf8-utf16-z9.c: Move ifunc resolvers to multiarch
folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|CU|VX].
(HAVE_FROM_C, HAVE_FROM_CU, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX,
FROM_LOOP_DEFAULT, FROM_LOOP_C, FROM_LOOP_CU, FROM_LOOP_VX,
TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX): New Define.

7 years agoS390: Use new s390_libc_ifunc_expr macro in s390 8bit-generic.c.
Stefan Liebler [Fri, 21 Apr 2017 13:30:00 +0000 (15:30 +0200)]
S390: Use new s390_libc_ifunc_expr macro in s390 8bit-generic.c.

This patch adds s390_libc_ifunc_expr macro which uses the __ifunc base macro
in include/libc-symbols.h and lets the user define a generic expression to
choose the correct ifunc variant.  Furthermore as the base macro is used,
the ifunc resolver functions are now also using inhibit_stack_protector.
S390 needs its own version due to the hwcap argument of the ifunc resolver.

This new macro is now used in iconv code in 8bit-generic.c instead of using
gcc attribute ifunc directly.

ChangeLog:

* sysdeps/s390/multiarch/ifunc-resolve.h
(s390_libc_ifunc_expr_init, s390_libc_ifunc_expr): New Define.
* sysdeps/s390/multiarch/8bit-generic.c
(__to_generic, __from_generic): Use s390_libc_ifunc_expr to
define ifunc resolvers.

7 years agomanual: Document replacing malloc [BZ #20424]
Florian Weimer [Fri, 21 Apr 2017 08:28:37 +0000 (10:28 +0200)]
manual: Document replacing malloc [BZ #20424]

7 years agoDo not use wildcard symbol names for public versions in Versions files.
Joseph Myers [Thu, 20 Apr 2017 20:35:21 +0000 (20:35 +0000)]
Do not use wildcard symbol names for public versions in Versions files.

As noted in
<https://sourceware.org/ml/libc-alpha/2012-12/msg00240.html>,
stdlib/Versions and wcsmbs/Versions list some functions as
__strto*_internal and __wcsto*_internal rather than explicitly listing
the symbols to be exported (so any new internal function matching one
of those patterns would be wrongly added to version GLIBC_2.0), which
seems like a bad idea.  This patch changes those files to list the
exported symbols explicitly.  There are still entries in
sysdeps/nacl/Versions for __nacl_irt_*, but as GLIBC_PRIVATE symbols
that seems less significant.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by the patch.

* stdlib/Versions (__strtod_internal): List explicitly, not as
wildcard.
(__strtof_internal): Likewise.
(__strtold_internal): Likewise.
(__strtol_internal): Likewise.
(__strtoll_internal): Likewise.
(__strtoul_internal): Likewise.
(__strtoull_internal): Likewise.
(__strtoq_internal): Likewise.
(__strtouq_internal): Likewise.
* wcsmbs/Versions (__wcstod_internal): Likewise.
(__wcstof_internal): Likewise.
(__wcstold_internal): Likewise.
(__wcstol_internal): Likewise.
(__wcstoll_internal): Likewise.
(__wcstoul_internal): Likewise.
(__wcstoull_internal): Likewise.

7 years agoFix missing timespec definition for sys/stat.h (BZ #21371)
Adhemerval Zanella [Mon, 17 Apr 2017 13:38:53 +0000 (10:38 -0300)]
Fix missing timespec definition for sys/stat.h (BZ #21371)

As indicated by the bug report, the 'struct timespec' definition
is not defined for '_XOPEN_SOURCE=700' and '_POSIX_C_SOURCE=200112L'.

It is because current code only includes its definition if __USE_ATFILE
is defined and the define is only set with:

  1. _GNU_SOURCE and/or _ATFILE_SOURCE definition.
  2. _POSIX_C_SOURCE >= 200809L

However, the 'st_*' fields in 'struct stat' are defined if __USE_XOPEN2K8.
This patch uses the same logic for 'struct timespec' inclusion.

Tested on x86_64-linux-gnu.

* io/sys/stat.h: Use __USE_XOPEN2K8 insteaf of __USE_ATFILE for
struct timespec definition.

7 years agonss_dns: Correct parentheses for the __glibc_unlikely argument
Florian Weimer [Wed, 19 Apr 2017 17:34:42 +0000 (19:34 +0200)]
nss_dns: Correct parentheses for the __glibc_unlikely argument

This fixes commit bee05c9d58a34ec5886faf3b56ecaa56355d94bf.

7 years agorcmd/rexec: Fix typo in comment
Florian Weimer [Wed, 19 Apr 2017 17:30:18 +0000 (19:30 +0200)]
rcmd/rexec: Fix typo in comment