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2017-05-09S390: Regenerate ULPsStefan Liebler2-6/+10
Updated ulps file - Needed if build with GCC 7. ChangeLog: * sysdeps/s390/fpu/libm-test-ulps: Regenerated.
2017-05-08vfprintf.c: Refactor magic number 32 into EXTSIZ.Carlos O'Donell2-25/+33
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.
2017-05-08Remove __ASSUME_PROC_PID_TASK_COMM.Joseph Myers3-19/+6
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.
2017-05-08Remove __ASSUME_GETCPU_SYSCALL.Joseph Myers2-5/+5
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.
2017-05-08support: Prevent multiple deletion of temporary filesFlorian Weimer7-93/+81
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.
2017-05-08support: Delete temporary files in LIFO orderFlorian Weimer2-11/+14
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.
2017-05-08Remove <sys/ultrasound.h>Florian Weimer4-2/+9
This header was once used for constants related to the Gravis Ultrasound sound card.
2017-05-08Require Linux kernel 3.2 or later on x86 / x86_64.Joseph Myers7-11/+15
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.
2017-05-04manual: Add preadv and pwritev documentationAdhemerval Zanella2-0/+106
* manual/llio.texi: Add preadv and pwritev documentation.
2017-05-04Fix network headers stdint.h namespace (bug 21455).Joseph Myers10-60/+105
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.
2017-05-04ldbl-128: Use mathx_hidden_def inplace of hidden_defPaul E. Murphy5-3/+15
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.
2017-05-04Fix signal.h bsd_signal namespace (bug 21445).Joseph Myers2-1/+4
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.
2017-05-04Use __glibc_reserved convention in mcontext, sigcontext (bug 21457).Joseph Myers4-10/+31
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.
2017-05-04powerpc: Fix strncat ifunc selectionRajalakshmi Srinivasaraghavan2-1/+6
Correct hwcap usage in strncat introduced by commit 249dcdb71b79e4c488a46c9027e0014c0bc27044. Tested on power7 and power8 systems
2017-05-03x86: Set dl_platform and dl_hwcap from CPU features [BZ #21391]H.J. Lu12-138/+273
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.
2017-05-03Tweak realloc/MREMAP comment to be more accurate.DJ Delorie2-3/+8
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.
2017-05-03Correct misplaced comments in struct ip_mreq_sourcePhil Blundell2-2/+7
2017-05-03Bug 20686: Add el_GR@euro support.Carlos O'Donell2-0/+6
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.
2017-05-03Bug 20116: Clarify behaviour of PD->lock.Carlos O'Donell2-3/+18
Add comments to the concurrency notes to clarify the semaphore-like and mutex-like behaviours of PD->lock.
2017-05-03Consolidate Linux epoll_wait syscallAdhemerval Zanella5-5/+17
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.
2017-05-03Consolidate Linux select implementationAdhemerval Zanella7-11/+78
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.
2017-05-03Consolidate Linux poll implementationAdhemerval Zanella3-3/+13
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.
2017-05-03Add HWCAP_ASIMDRDM from Linux 4.11 to AArch64 bits/hwcap.h.Joseph Myers2-0/+6
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.
2017-05-02sparc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocsVladimir Mezentsev2-0/+12
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.
2017-05-02posix: Fix internal p{read,write} plt usageAdhemerval Zanella6-1/+17
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.
2017-05-02powerpc: Update powerpc-fpu libm-test-ulpsTulio Magno Quites Machado Filho2-16/+20
* sysdeps/powerpc/fpu/libm-test-ulps: Update.
2017-05-01nptl: Using libsupport for tst-cancel4*Adhemerval Zanella6-946/+250
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.
2017-05-01posix: Using libsupport for p{write,read}v testsAdhemerval Zanella2-25/+30
Checked on x86_64-linux-gnu. * misc/tst-preadvwritev-common.c (do_prepare): Use libsupport expected arguments. (do_test): Adapt to use libsupport.
2017-05-01Add TCP_FASTOPEN_CONNECT from Linux 4.11 to netinet/tcp.h.Joseph Myers2-0/+3
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.
2017-05-01Add PF_SMC, AF_SMC from Linux 4.11 to bits/socket.h.Joseph Myers2-1/+7
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.
2017-05-01Default Linux kernel version in build-many-glibcs.py to 4.11.Joseph Myers2-1/+6
* scripts/build-many-glibcs.py (Context.checkout): Default Linux kernel version to 4.11.
2017-04-28powerpc: Fix logbl on power7 [BZ# 21280]Tulio Magno Quites Machado Filho2-6/+25
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.
2017-04-28powerpc64le: Create divergent sysdep directory for powerpc64le.Paul E. Murphy20-0/+43
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.
2017-04-28conformtest: Allow time.h inclusion from semaphore.h for XOPEN2K.Joseph Myers3-2/+10
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.
2017-04-27conformtest: Fix XPG standard naming.Joseph Myers64-224/+291
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.
2017-04-26Default build-many-glibcs.py to GCC 7 branch.Joseph Myers2-1/+6
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.
2017-04-26Add earlyclobber to sqrtt/sqrtf insns.Uros Bizjak2-4/+10
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.
2017-04-25Fix sys/socket.h namespace issues from sys/uio.h inclusion (bug 21426).Joseph Myers11-21/+58
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.
2017-04-25conformtest: Allow *_t in sys/socket.h.Joseph Myers2-0/+5
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.
2017-04-25posix: Remove ununsed posix_spawn internal assignmentAdhemerval Zanella2-16/+19
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.
2017-04-25[BZ 21340] add support for POSIX_SPAWN_SETSIDAdhemerval Zanella9-2/+131
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.
2017-04-24Macroize function declarations in math_private.hGabriel F. T. Gomes3-170/+154
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.
2017-04-21S390: Move utf8-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr ↵Stefan Liebler3-103/+169
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.
2017-04-21S390: Move utf16-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr ↵Stefan Liebler3-72/+123
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.
2017-04-21S390: Move utf8-utf16-z9.c to multiarch folder and use s390_libc_ifunc_expr ↵Stefan Liebler3-95/+159
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.
2017-04-21S390: Use new s390_libc_ifunc_expr macro in s390 8bit-generic.c.Stefan Liebler3-29/+25
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.
2017-04-21manual: Document replacing malloc [BZ #20424]Florian Weimer2-0/+72
2017-04-20Do not use wildcard symbol names for public versions in Versions files.Joseph Myers3-2/+29
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.
2017-04-20Fix missing timespec definition for sys/stat.h (BZ #21371)Adhemerval Zanella2-1/+6
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.
2017-04-19nss_dns: Correct parentheses for the __glibc_unlikely argumentFlorian Weimer2-1/+5
This fixes commit bee05c9d58a34ec5886faf3b56ecaa56355d94bf.
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