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* Fix h_errno namespace (bug 18520).Joseph Myers2015-06-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | The 2008 edition of POSIX removed h_errno, but some functions still bring in references to the h_errno external symbol. As this symbol is not a part of the public ABI (only __h_errno_location is), this patch fixes this by renaming the GLIBC_PRIVATE TLS symbol to __h_errno. Tested for x86_64 and x86 (testsuite, and comparison of installed shared libraries). Disassembly of all shared libraries using h_errno changes because of the renaming (and changes to associated TLS / GOT offsets in some cases); disassembly of libpthread on x86_64 changes more substantially because the enlargement of .dynsym affects subsequent addresses. [BZ #18520] * inet/herrno.c (h_errno): Rename to __h_errno. (__libc_h_errno): Define as alias of __h_errno not h_errno. * include/netdb.h [IS_IN_LIB && !IS_IN (libc)] (h_errno): Define to __h_errno instead of h_errno. * nptl/herrno.c (h_errno): Rename to __h_errno. (__h_errno_location): Refer to __h_errno not h_errno. * resolv/Versions (h_errno): Rename to __h_errno. * conform/Makefile (test-xfail-XOPEN2K8/grp.h/linknamespace): Remove variable. (test-xfail-XOPEN2K8/pwd.h/linknamespace): Likewise.
* pthread_key_create: Fix typo in commentFlorian Weimer2015-06-111-1/+1
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* nptl: restore .interp section in libpthread.soGleb Fotengauer-Malinovskiy2015-06-102-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 02657da2cf4457804ed938ee08b8316249126444, .interp section was removed from libpthread.so. This led to an error: $ /lib64/libpthread.so.0 Native POSIX Threads Library by Ulrich Drepper et al Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Forced unwind support included. Segmentation fault (gdb) bt #0 0x00000000000055a6 in _exit@plt () Unfortunately, there is no way to add a regression test for the bug because .interp specifies the path to dynamic linker of the target system. [BZ #18479] * nptl/pt-interp.c: New file. * nptl/Makefile (libpthread-routines, libpthread-shared-only-routines): Add pt-interp. [$(build-shared) = yes] ($(objpfx)pt-interp.os): Depend on $(common-objpfx)runtime-linker.h.
* Fix missing wake-ups in pthread_rwlock_rdlock.Torvald Riegel2015-06-047-6/+271
| | | | | | | | | This adds wake-ups that would be missing if assuming that for a non-writer-preferring rwlock, if one thread has acquired a rdlock and does not release it, another thread will eventually acquire a rdlock too despite concurrent write lock acquisition attempts. BZ 14958 is about supporting this assumption. Strictly speaking, this isn't a valid test case, but nonetheless worth supporting (see comment 7 of BZ 14958).
* Fix lost wake-up when pthread_rwlock_timedrwlock times out.Torvald Riegel2015-06-043-0/+135
| | | | | | | | | | If we set up a rwlock to prefer writers (and disallow recursive rdlock acquisitions), then readers will block for writers that are blocked to acquire the lock (otherwise, readers could constantly enter and exit, and the writer would never get the lock). However, the existing implementation did not wake such readers when the writer timed out. This patch adds the missing wake-up. There's no similar case for writers being blocked on readers.
* Split timed-wait functions out of nptl/lowlevellock.c.Roland McGrath2015-05-264-84/+131
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* Remove socket.S implementationAdhemerval Zanella2015-05-221-0/+6
| | | | | | | | | | | | | | | This patch removes the socket.S implementation for all ports and replace it by a C implementation using socketcall. For ports that implement the syscall directly, there is no change. The patch idea is to simplify the socket function implementation that uses the socketcall to be based on C implemetation instead of a pseudo assembly implementation with arch specific parts. The patch then remove the assembly implementatation for the ports which uses socketcall (i386, microblaze, mips, powerpc, sparc, m68k, s390 and sh). I have cross-build GLIBC for afore-mentioned ports and tested on both i386 and ppc32 without regressions.
* Fix nptl-init.c use of INTERNAL_SYSCALL_DECL.Roland McGrath2015-05-221-11/+19
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* NaCl: Set tid field to a unique value.Roland McGrath2015-05-202-4/+31
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* BZ#18434: Fix sem_post EOVERFLOW check for [!__HAVE_64B_ATOMICS].Roland McGrath2015-05-193-3/+103
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* Ensure `wint_t' is defined before use in include/stdio.hArjun Shankar2015-05-181-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While trying to get nptl/tst-initializers1.c to include the test skeleton, I came across a couple of speed bumps. Firstly: after making the appropriate changes to the test, running `make check' led to this error: > In file included from ../malloc/malloc.h:24:0, .. > from tst-initializers1.c:60: > ../include/stdio.h:111:1: error: unknown type name `wint_t' > extern wint_t __getwc_unlocked (FILE *__fp); So, `wint_t' is used before being defined. Question: Why did test-skeleton.c not cause this error in any of the other tests that include it? Anyway, I noticed include/stdio.h includes stddef.h, which in turn defines `wint_t', but only if `__need_wint_t' is defined. So I put in a `#define __need_wint_t' before the include to get rid of the error. Is that the correct fix? A subsequent `make && make check' led to this second error: > from tst-initializers1-c89.c:1: > ../test-skeleton.c: In function `main': > ../test-skeleton.c:356:11: error: `for' loop initial declarations are only > allowed in C99 mode > for (struct temp_name_list *n = temp_name_list; Although there seem to be several other C89 no-noes in test-skeleton.c, I needed only to fix this specific one for gcc-4.8.3 to stop complaining.
* libc-vdso.h place consolidationAdhemerval Zanella2015-04-201-1/+1
| | | | | | This patch moves the libc-vdso.h internal header from bits folder to default architecture one and also corrects the remaning includes in the files.
* Make sem_timedwait use FUTEX_CLOCK_REALTIME (bug 18138).Joseph Myers2015-03-181-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sem_timedwait converts absolute timeouts to relative to pass them to the futex syscall. (Before the recent reimplementation, on x86_64 it used FUTEX_CLOCK_REALTIME, but not on other architectures.) Correctly implementing POSIX requirements, however, requires use of FUTEX_CLOCK_REALTIME; passing a relative timeout to the kernel does not conform to POSIX. The POSIX specification for sem_timedwait says "The timeout shall be based on the CLOCK_REALTIME clock.". The POSIX specification for clock_settime says "If the value of the CLOCK_REALTIME clock is set via clock_settime(), the new value of the clock shall be used to determine the time of expiration for absolute time services based upon the CLOCK_REALTIME clock. This applies to the time at which armed absolute timers expire. If the absolute time requested at the invocation of such a time service is before the new value of the clock, the time service shall expire immediately as if the clock had reached the requested time normally.". If a relative timeout is passed to the kernel, it is interpreted according to the CLOCK_MONOTONIC clock, and so fails to meet that POSIX requirement in the event of clock changes. This patch makes sem_timedwait use lll_futex_timed_wait_bitset with FUTEX_CLOCK_REALTIME when possible, as done in some other places in NPTL. FUTEX_CLOCK_REALTIME is always available for supported Linux kernel versions; unavailability of lll_futex_timed_wait_bitset is only an issue for hppa (an issue noted in <https://sourceware.org/glibc/wiki/PortStatus>, and fixed by the unreviewed <https://sourceware.org/ml/libc-alpha/2014-12/msg00655.html> that removes the hppa lowlevellock.h completely). In the FUTEX_CLOCK_REALTIME case, the glibc code still needs to check for negative tv_sec and handle that as timeout, because the Linux kernel returns EINVAL not ETIMEDOUT for that case, so resulting in failures of nptl/tst-abstime and nptl/tst-sem13 in the absence of that check. If we're trying to distinguish between Linux-specific and generic-futex NPTL code, I suppose having this in an nptl/ file isn't ideal, but there doesn't seem to be any better place at present. It's not possible to add a testcase for this issue to the testsuite because of the requirement to change the system clock as part of a test (this is a case where testing would require some form of container, with root in that container, and one whose CLOCK_REALTIME is isolated from that of the host; I'm not sure what forms of containers, short of a full virtual machine, provide that clock isolation). Tested for x86_64. Also tested for powerpc with the testcase included in the bug. [BZ #18138] * nptl/sem_waitcommon.c: Include <kernel-features.h>. (futex_abstimed_wait) [__ASSUME_FUTEX_CLOCK_REALTIME && lll_futex_timed_wait_bitset]: Use lll_futex_timed_wait_bitset with FUTEX_CLOCK_REALTIME instead of lll_futex_timed_wait.
* Fix DTV race, assert, DTV_SURPLUS Static TLS limit, and nptl_db garbageAlexandre Oliva2015-03-171-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for ChangeLog [BZ #17090] [BZ #17620] [BZ #17621] [BZ #17628] * NEWS: Update. * elf/dl-tls.c (_dl_update_slotinfo): Clean up outdated DTV entries with Static TLS too. Skip entries past the end of the allocated DTV, from Alan Modra. (tls_get_addr_tail): Update to glibc_likely/unlikely. Move Static TLS DTV entry set up from... (_dl_allocate_tls_init): ... here (fix modid assertion), ... * elf/dl-reloc.c (_dl_nothread_init_static_tls): ... here... * nptl/allocatestack.c (init_one_static_tls): ... and here... * elf/dlopen.c (dl_open_worker): Drop l_tls_modid upper bound for Static TLS. * elf/tlsdeschtab.h (map_generation): Return size_t. Check that the slot we find is associated with the given map before using its generation count. * nptl_db/db_info.c: Include ldsodefs.h. (rtld_global, dtv_slotinfo_list, dtv_slotinfo): New typedefs. * nptl_db/structs.def (DB_RTLD_VARIABLE): New macro. (DB_MAIN_VARIABLE, DB_RTLD_GLOBAL_FIELD): Likewise. (link_map::l_tls_offset): New struct field. (dtv_t::counter): Likewise. (rtld_global): New struct. (_rtld_global): New rtld variable. (dl_tls_dtv_slotinfo_list): New rtld global field. (dtv_slotinfo_list): New struct. (dtv_slotinfo): Likewise. * nptl_db/td_symbol_list.c: Drop gnu/lib-names.h include. (td_lookup): Rename to... (td_mod_lookup): ... this. Use new mod parameter instead of LIBPTHREAD_SO. * nptl_db/td_thr_tlsbase.c: Include link.h. (dtv_slotinfo_list, dtv_slotinfo): New functions. (td_thr_tlsbase): Check DTV generation. Compute Static TLS addresses even if the DTV is out of date or missing them. * nptl_db/fetch-value.c (_td_locate_field): Do not refuse to index zero-length arrays. * nptl_db/thread_dbP.h: Include gnu/lib-names.h. (td_lookup): Make it a macro implemented in terms of... (td_mod_lookup): ... this declaration. * nptl_db/db-symbols.awk (DB_RTLD_VARIABLE): Override. (DB_MAIN_VARIABLE): Likewise.
* Let tests result in UNSUPPORTED; use that for unbuildable C++ casesRoland McGrath2015-03-101-9/+9
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* Conditionalize some test code for SIGRTMIN, SA_SIGINFO.Roland McGrath2015-03-043-9/+25
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* Avoid C++ tests when the C++ cannot be linked.Roland McGrath2015-03-041-4/+9
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* Make error checking effective in nptl/tst-cond25.c.Torvald Riegel2015-02-161-1/+9
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* Filter out PTHREAD_MUTEX_NO_ELISION_NP bit in pthread_mutexattr_gettype (BZ ↵Andreas Schwab2015-02-123-2/+63
| | | | | | | | #15790) pthread_mutexattr_settype adds PTHREAD_MUTEX_NO_ELISION_NP to kind, which is an internal flag that pthread_mutexattr_gettype shouldn't expose, since pthread_mutexattr_settype wouldn't accept it.
* NPTL: Conditionalize some sanity tests for SIGCANCEL/SIGSETXID.Roland McGrath2015-02-062-0/+6
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* Conditionalize use of SIGRTMIN in nptl/tst-locale1.c.Roland McGrath2015-02-061-1/+5
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* NPTL: Build tests using clone directly only for Linux.Roland McGrath2015-02-064-226/+2
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* Use signal rather than sigaction in nptl/tst-cleanup2.Roland McGrath2015-02-061-8/+3
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* Conditionalize some tests' use of SA_SIGINFO.Roland McGrath2015-02-062-0/+4
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* Fix nptl/tst-kill5 not to presume SIGRTMAX exists.Roland McGrath2015-02-061-1/+2
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* Clean up nptl/tst-join5 use of nanosleep.Roland McGrath2015-02-061-7/+7
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* Clean up NPTL system to be compat-only.Roland McGrath2015-02-061-8/+40
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* Clean up NPTL longjmp to be compat-only.Roland McGrath2015-02-061-6/+50
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* Clean up NPTL fork to be compat-only.Roland McGrath2015-02-062-4/+52
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* Also use uint64_t in __new_sem_wait_fastH.J. Lu2015-01-231-1/+1
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* Use uint64_t and (uint64_t) 1 for 64-bit intH.J. Lu2015-01-232-6/+6
| | | | | | | | | | | | | | | This patch replaces unsigned long int and 1UL with uint64_t and (uint64_t) 1 to support ILP32 targets like x32. [BZ #17870] * nptl/sem_post.c (__new_sem_post): Replace unsigned long int with uint64_t. * nptl/sem_waitcommon.c (__sem_wait_cleanup): Replace 1UL with (uint64_t) 1. (__new_sem_wait_slow): Replace unsigned long int with uint64_t. Replace 1UL with (uint64_t) 1. * sysdeps/nptl/internaltypes.h (new_sem): Replace unsigned long int with uint64_t.
* Fix semaphore destruction (bug 12674).Carlos O'Donell2015-01-2113-300/+641
| | | | | | | | | | | | | This commit fixes semaphore destruction by either using 64b atomic operations (where available), or by using two separate fields when only 32b atomic operations are available. In the latter case, we keep a conservative estimate of whether there are any waiting threads in one bit of the field that counts the number of available tokens, thus allowing sem_post to atomically both add a token and determine whether it needs to call futex_wake. See: https://sourceware.org/ml/libc-alpha/2014-12/msg00155.html
* NPTL: Fix generic pthread_sigmask.Roland McGrath2015-01-081-1/+5
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* NPTL: Fixed missed conditionalization of setxid hooey.Roland McGrath2015-01-081-0/+2
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* NPTL: Refactor cpu_set_t validation to be sysdeps-controlledRoland McGrath2015-01-084-29/+35
| | | | | This removes Linuxisms related to cpu_set_t validation from the generic NPTL code and puts them into a new sysdeps header file.
* Add -Wno-trampolines as neededRichard Henderson2015-01-081-0/+1
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* Function declaration cleanupAdhemerval Zanella2015-01-066-18/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the some function declaration from K&R style to default ANSI C. * nptl/pthread_cancel.c (pthread_cancel): Use ANSI prototype. * nptl/pthread_cond_timedwait.c (__pthread_cond_timedwait): Likewise. * nptl/pthread_cond_wait.c (__pthread_cond_wait): Likewise. * nptl/pthread_exit.c (__pthread_exit): Likewise. * nptl/pthread_join.c (pthread_join): Likewise. * nptl/pthread_timedjoin.c (pthread_timedjoin_np): Likewise. * sysdeps/posix/waitid.c (__waitid): Likewise. * sysdeps/unix/sysv/linux/arm/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/arm/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/arm/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/arm/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c (__libc_pwrite64): Likewsie. * sysdeps/unix/sysv/linux/mips/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/mips/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/mips/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/mips/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/msgrcv.c (__libc_msgrcv): Likewise. * sysdeps/unix/sysv/linux/msgsnd.c (__libc_msgsnd): Likewise. * sysdeps/unix/sysv/linux/openat.c (OPENAT_NOT_CANCEL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/preadv.c (PREADV): Likewise. * sysdeps/unix/sysv/linux/pthread_kill.c (__pthread_kill): Likewise. * sysdeps/unix/sysv/linux/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/pwritev.c (__libc_pwritev): Likewise. * sysdeps/unix/sysv/linux/sh/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/sh/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/sh/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/sh/pwrite64.c (__libc_write64): Likewise. * sysdeps/unix/sysv/linux/sigsuspend.c (__sigsuspend): Likewise. * sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Likewise. * sysdeps/unix/sysv/linux/sigwait.c (__sigwait): Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c (__libc_msgrcv): Likewise.
* Use single year in copyright notice in banner in ntpl/version.c.Joseph Myers2015-01-021-1/+1
| | | | * nptl/version.c (banner): Use single year in copyright notice.
* Update copyright dates not handled by scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've updated copyright dates in glibc for 2015. This is the patch for the changes not generated by scripts/update-copyrights and subsequent build / regeneration of generated files. Apart from the files updated last time (of which sotruss.ksh had moved to sotruss.sh during the year) this also updates nptl/version.c (missed from 2006 until October) and sysdeps/unix/sysv/linux/lddlibc4.c (missed since 2009). * NEWS: Update copyright dates. * catgets/gencat.c (print_version): Likewise. * csu/version.c (banner): Likewise. * debug/catchsegv.sh: Likewise. * debug/pcprofiledump.c (print_version): Likewise. * debug/xtrace.sh (do_version): Likewise. * elf/ldconfig.c (print_version): Likewise. * elf/ldd.bash.in: Likewise. * elf/pldd.c (print_version): Likewise. * elf/sotruss.sh: Likewise. * elf/sprof.c (print_version): Likewise. * iconv/iconv_prog.c (print_version): Likewise. * iconv/iconvconfig.c (print_version): Likewise. * locale/programs/locale.c (print_version): Likewise. * locale/programs/localedef.c (print_version): Likewise. * login/programs/pt_chown.c (print_version): Likewise. * malloc/memusage.sh (do_version): Likewise. * malloc/memusagestat.c (print_version): Likewise. * malloc/mtrace.pl: Likewise. * manual/libc.texinfo: Likewise. * nptl/version.c (banner): Likewise. * nscd/nscd.c (print_version): Likewise. * nss/getent.c (print_version): Likewise. * nss/makedb.c (print_version): Likewise. * posix/getconf.c (main): Likewise. * scripts/test-installation.pl: Likewise. * sysdeps/unix/sysv/linux/lddlibc4.c (main): Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-02387-387/+387
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* Replace %ld with %jd and cast to intmax_tH.J. Lu2014-12-301-2/+3
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* NPTL: Move fork state variables to initializer files.Roland McGrath2014-12-172-0/+5
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* Revert "Use pragmas rather than makefiles for necessary options for unwind ↵Roland McGrath2014-12-162-2/+3
| | | | | | code." This reverts commit c324fcfe75c3976ae0b16943df00710e1d0d74f7.
* Use pragmas rather than makefiles for necessary options for unwind code.Roland McGrath2014-12-162-3/+2
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* Add comments for the generic lowlevellock implementation.Torvald Riegel2014-12-152-9/+21
| | | | Patch by Bernard Ogden <bernie.ogden@linaro.org>.
* Fix nptl/tst-sem4: always start with a fresh semaphore.Torvald Riegel2014-12-151-2/+6
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* Fix nptl/tst-mutex5.c: Do not skip tests if elision is enabled.Torvald Riegel2014-12-151-3/+0
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* NPTL: Refactor named semaphore code to use shm-directory.hRoland McGrath2014-12-125-176/+21
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* NPTL: Add stubs for Linux-only extension functions.Roland McGrath2014-12-124-0/+128
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* Fix NPTL build for !__ASSUME_SET_ROBUST_LIST case.Roland McGrath2014-12-121-1/+1
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