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* Avoid insecure usage of tmpnam in tests.Joseph Myers2018-07-1813-44/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Various glibc testcases use tmpnam in ways subject to race conditions (generate a temporary file name, then later open that file without O_EXCL). This patch fixes those tests to use mkstemp - generally a minimal local fix to use mkstemp instead of tmpnam, rather than a larger fix to use other testsuite infrastructure for temporary files. The unchanged use of tmpnam in posix/wordexp-test.c would fail safe in the event of a race (it's generating a name for use with mkdir rather than for a file to be opened for writing). Tested for x86_64. * grp/tst_fgetgrent.c: Include <unistd.h>. (main): Use mkstemp instead of tmpnam. * io/test-utime.c (main): Likewise. * posix/annexc.c (macrofile): Change to modifiable array. (get_null_defines): Use mkstemp instead of tmpnam. Do not remove macrofile here. * posix/bug-getopt1.c: Include <stdlib.h>. (do_test): Use mkstemp instead of tmpnam. * posix/bug-getopt2.c: Include <stdlib.h>. (do_test): Use mkstemp instead of tmpnam. * posix/bug-getopt3.c: Include <stdlib.h>. (do_test): Use mkstemp instead of tmpnam. * posix/bug-getopt4.c: Include <stdlib.h>. (do_test): Use mkstemp instead of tmpnam. * posix/bug-getopt5.c: Include <stdlib.h>. (do_test): Use mkstemp instead of tmpnam. * stdio-common/bug7.c: Include <stdlib.h> and <unistd.h>. (main): Use mkstemp instead of tmpnam. * stdio-common/tst-fdopen.c: Include <stdlib.h>. (main): Use mkstemp instead of tmpnam. * stdio-common/tst-ungetc.c: Include <stdlib.h>. (main): use mkstemp instead of tmpnam. * stdlib/isomac.c (macrofile): Change to modifiable array. (get_null_defines): Use mkstemp instead of tmpnam. Do not remove macrofile here.
* x86/CET: Document glibc.tune.x86_ibt and glibc.tune.x86_shstkH.J. Lu2018-07-182-0/+33
| | | | | * manual/tunables.texi: Document glibc.tune.x86_ibt and glibc.tune.x86_shstk.
* Intel CET: Document --enable-cetH.J. Lu2018-07-184-0/+38
| | | | | | * NEWS: Mention --enable-cet. * manual/install.texi: Document --enable-cet. * INSTALL: Regenerated.
* x86-64: Use _CET_NOTRACK in memcmp-sse4.SH.J. Lu2018-07-182-1/+6
| | | | | * sysdeps/x86_64/multiarch/memcmp-sse4.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in memset-sse2-rep.SH.J. Lu2018-07-182-2/+8
| | | | | | * sysdeps/i386/i686/multiarch/memset-sse2-rep.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in strcat-sse2.SH.J. Lu2018-07-182-2/+8
| | | | | | * sysdeps/i386/i686/multiarch/strcat-sse2.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in strcpy-sse2.SH.J. Lu2018-07-182-2/+8
| | | | | | * sysdeps/i386/i686/multiarch/strcpy-sse2.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in memcpy-ssse3.SH.J. Lu2018-07-182-2/+8
| | | | | | * sysdeps/i386/i686/multiarch/memcpy-ssse3.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in memcpy-ssse3-rep.SH.J. Lu2018-07-182-4/+11
| | | | | | | * sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table. (BRANCH_TO_JMPTBL_ENTRY_TAIL): Likewise.
* i386: Use _CET_NOTRACK in memcmp-sse4.SH.J. Lu2018-07-182-2/+8
| | | | | | * sysdeps/i386/i686/multiarch/memcmp-sse4.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in memset-sse2.SH.J. Lu2018-07-182-2/+8
| | | | | | * sysdeps/i386/i686/multiarch/memset-sse2.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* i386: Use _CET_NOTRACK in i686/memcmp.SH.J. Lu2018-07-182-2/+7
| | | | | * sysdeps/i386/i686/memcmp.S (memcmp): Add _CET_NOTRACK before indirect jump to jump table.
* x86-64: Use _CET_NOTRACK in memcpy-ssse3.SH.J. Lu2018-07-182-62/+69
| | | | | | | * sysdeps/x86_64/multiarch/memcpy-ssse3.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table. (MEMCPY): Likewise.
* x86-64: Use _CET_NOTRACK in memcpy-ssse3-back.SH.J. Lu2018-07-182-3/+10
| | | | | | | * sysdeps/x86_64/multiarch/memcpy-ssse3-back.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table. (MEMCPY): Likewise.
* x86-64: Use _CET_NOTRACK in strcmp-sse42.SH.J. Lu2018-07-182-1/+6
| | | | | * sysdeps/x86_64/multiarch/strcmp-sse42.S (STRCMP_SSE42): Add _CET_NOTRACK before indirect jump to jump table.
* x86-64: Use _CET_NOTRACK in strcpy-sse2-unaligned.SH.J. Lu2018-07-182-1/+7
| | | | | | * sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
* x86_64: Use _CET_NOTRACK in strcmp.SH.J. Lu2018-07-182-1/+6
| | | | | * sysdeps/x86_64/strcmp.S (STRCMP): Add _CET_NOTRACK before indirect jump to jump table.
* New locale: Yakut (Sakha) for Russia (sah_RU) [BZ #22241]Valery Timiriliyev2018-07-186-2/+388
| | | | | | | | | | * localedata/Makefile (test-input): Add sah_RU.UTF-8. (LOCALES): Likewise. * localedata/SUPPORTED (sah_RU/UTF-8): New entry. * localedata/locales/sah_RU: New file. * localedata/sah_RU.UTF-8.in: New file. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* i386: Add _CET_ENDBR to indirect jump targets in add_n.S/sub_n.SH.J. Lu2018-07-174-3/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | i386 add_n.S and sub_n.S use a trick to implment jump tables with LEA. We can't use conditional branches nor normal jump tables since jump table entries use EFLAGS set by jump table index. This patch adds _CET_ENDBR to indirect jump targets and adjust destination for _CET_ENDBR. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * sysdeps/i386/add_n.S: Include <sysdep.h>, instead of "sysdep.h". (__mpn_add_n): Save and restore %ebx if IBT is enabed. Add _CET_ENDBR to indirect jump targets and adjust jump destination for _CET_ENDBR. * sysdeps/i386/i686/add_n.S: Include <sysdep.h>, instead of "sysdep.h". (__mpn_add_n): Save and restore %ebx if IBT is enabed. Add _CET_ENDBR to indirect jump targets and adjust jump destination for _CET_ENDBR. * sysdeps/i386/sub_n.S: Include <sysdep.h>, instead of "sysdep.h". (__mpn_sub_n): Save and restore %ebx if IBT is enabed. Add _CET_ENDBR to indirect jump targets and adjust jump destination for _CET_ENDBR.
* x86-64: Add _CET_ENDBR to STRCMP_SSE42H.J. Lu2018-07-172-0/+6
| | | | | | | | | | Add _CET_ENDBR to STRCMP_SSE42, which is called indirectly, to support IBT. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * sysdeps/x86_64/multiarch/strcmp-sse42.S (STRCMP_SSE42): Add _CET_ENDBR.
* x86: Add _CET_ENDBR to functions in dl-tlsdesc.SH.J. Lu2018-07-173-0/+28
| | | | | | | | | | | | | | | | | | | | | | | Add _CET_ENDBR to functions in dl-tlsdesc.S, which are called indirectly, to support IBT. Tested on i686 and x86-64. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * sysdeps/i386/dl-tlsdesc.S (_dl_tlsdesc_return): Add _CET_ENDBR. (_dl_tlsdesc_undefweak): Likewise. (_dl_tlsdesc_dynamic): Likewise. (_dl_tlsdesc_resolve_abs_plus_addend): Likewise. (_dl_tlsdesc_resolve_rel): Likewise. (_dl_tlsdesc_resolve_rela): Likewise. (_dl_tlsdesc_resolve_hold): Likewise. * sysdeps/x86_64/dl-tlsdesc.S (_dl_tlsdesc_return): Likewise. (_dl_tlsdesc_undefweak): Likewise. (_dl_tlsdesc_dynamic): Likewise. (_dl_tlsdesc_resolve_rela): Likewise. (_dl_tlsdesc_resolve_hold): Likewise.
* x86: Add _CET_ENDBR to functions in crti.SH.J. Lu2018-07-173-0/+11
| | | | | | | | | | | | | | Add _CET_ENDBR to functions in crti.S, which are called indirectly, to support IBT. Tested on i686 and x86-64. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * sysdeps/i386/crti.S (_init): Add _CET_ENDBR. (_fini): Likewise. * sysdeps/x86_64/crti.S (_init): Likewise. (_fini): Likewise.
* os_RU: Add alternative month names (bug 23140).Rafal Luzynski2018-07-173-4/+24
| | | | | | | | | [BZ #23140] * localedata/locales/os_RU (mon): Rename to... (alt_mon): This. (mon): Import from CLDR (genitive case). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* x86: Always include <dl-cet.h>/cet-tunables.h> for --enable-cetH.J. Lu2018-07-172-2/+10
| | | | | | | | | Always include <dl-cet.h> and cet-tunables.h> when CET is enabled. Otherwise, configure glibc with --enable-cet --disable-tunables will fail to build. * sysdeps/x86/cpu-features.c: Always include <dl-cet.h> and cet-tunables.h> when CET is enabled.
* x86: Support IBT and SHSTK in Intel CET [BZ #21598]H.J. Lu2018-07-1627-25/+1382
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Intel Control-flow Enforcement Technology (CET) instructions: https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-en forcement-technology-preview.pdf includes Indirect Branch Tracking (IBT) and Shadow Stack (SHSTK). GNU_PROPERTY_X86_FEATURE_1_IBT is added to GNU program property to indicate that all executable sections are compatible with IBT when ENDBR instruction starts each valid target where an indirect branch instruction can land. Linker sets GNU_PROPERTY_X86_FEATURE_1_IBT on output only if it is set on all relocatable inputs. On an IBT capable processor, the following steps should be taken: 1. When loading an executable without an interpreter, enable IBT and lock IBT if GNU_PROPERTY_X86_FEATURE_1_IBT is set on the executable. 2. When loading an executable with an interpreter, enable IBT if GNU_PROPERTY_X86_FEATURE_1_IBT is set on the interpreter. a. If GNU_PROPERTY_X86_FEATURE_1_IBT isn't set on the executable, disable IBT. b. Lock IBT. 3. If IBT is enabled, when loading a shared object without GNU_PROPERTY_X86_FEATURE_1_IBT: a. If legacy interwork is allowed, then mark all pages in executable PT_LOAD segments in legacy code page bitmap. Failure of legacy code page bitmap allocation causes an error. b. If legacy interwork isn't allowed, it causes an error. GNU_PROPERTY_X86_FEATURE_1_SHSTK is added to GNU program property to indicate that all executable sections are compatible with SHSTK where return address popped from shadow stack always matches return address popped from normal stack. Linker sets GNU_PROPERTY_X86_FEATURE_1_SHSTK on output only if it is set on all relocatable inputs. On a SHSTK capable processor, the following steps should be taken: 1. When loading an executable without an interpreter, enable SHSTK if GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on the executable. 2. When loading an executable with an interpreter, enable SHSTK if GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on interpreter. a. If GNU_PROPERTY_X86_FEATURE_1_SHSTK isn't set on the executable or any shared objects loaded via the DT_NEEDED tag, disable SHSTK. b. Otherwise lock SHSTK. 3. After SHSTK is enabled, it is an error to load a shared object without GNU_PROPERTY_X86_FEATURE_1_SHSTK. To enable CET support in glibc, --enable-cet is required to configure glibc. When CET is enabled, both compiler and assembler must support CET. Otherwise, it is a configure-time error. To support CET run-time control, 1. _dl_x86_feature_1 is added to the writable ld.so namespace to indicate if IBT or SHSTK are enabled at run-time. It should be initialized by init_cpu_features. 2. For dynamic executables: a. A l_cet field is added to struct link_map to indicate if IBT or SHSTK is enabled in an ELF module. _dl_process_pt_note or _rtld_process_pt_note is called to process PT_NOTE segment for GNU program property and set l_cet. b. _dl_open_check is added to check IBT and SHSTK compatibilty when dlopening a shared object. 3. Replace i386 _dl_runtime_resolve and _dl_runtime_profile with _dl_runtime_resolve_shstk and _dl_runtime_profile_shstk, respectively if SHSTK is enabled. CET run-time control can be changed via GLIBC_TUNABLES with $ export GLIBC_TUNABLES=glibc.tune.x86_shstk=[permissive|on|off] $ export GLIBC_TUNABLES=glibc.tune.x86_ibt=[permissive|on|off] 1. permissive: SHSTK is disabled when dlopening a legacy ELF module. 2. on: IBT or SHSTK are always enabled, regardless if there are IBT or SHSTK bits in GNU program property. 3. off: IBT or SHSTK are always disabled, regardless if there are IBT or SHSTK bits in GNU program property. <cet.h> from CET-enabled GCC is automatically included by assembly codes to add GNU_PROPERTY_X86_FEATURE_1_IBT and GNU_PROPERTY_X86_FEATURE_1_SHSTK to GNU program property. _CET_ENDBR is added at the entrance of all assembly functions whose address may be taken. _CET_NOTRACK is used to insert NOTRACK prefix with indirect jump table to support IBT. It is defined as notrack when _CET_NOTRACK is defined in <cet.h>. [BZ #21598] * configure.ac: Add --enable-cet. * configure: Regenerated. * elf/Makefille (all-built-dso): Add a comment. * elf/dl-load.c (filebuf): Moved before "dynamic-link.h". Include <dl-prop.h>. (_dl_map_object_from_fd): Call _dl_process_pt_note on PT_NOTE segment. * elf/dl-open.c: Include <dl-prop.h>. (dl_open_worker): Call _dl_open_check. * elf/rtld.c: Include <dl-prop.h>. (dl_main): Call _rtld_process_pt_note on PT_NOTE segment. Call _rtld_main_check. * sysdeps/generic/dl-prop.h: New file. * sysdeps/i386/dl-cet.c: Likewise. * sysdeps/unix/sysv/linux/x86/cpu-features.c: Likewise. * sysdeps/unix/sysv/linux/x86/dl-cet.h: Likewise. * sysdeps/x86/cet-tunables.h: Likewise. * sysdeps/x86/check-cet.awk: Likewise. * sysdeps/x86/configure: Likewise. * sysdeps/x86/configure.ac: Likewise. * sysdeps/x86/dl-cet.c: Likewise. * sysdeps/x86/dl-procruntime.c: Likewise. * sysdeps/x86/dl-prop.h: Likewise. * sysdeps/x86/libc-start.h: Likewise. * sysdeps/x86/link_map.h: Likewise. * sysdeps/i386/dl-trampoline.S (_dl_runtime_resolve): Add _CET_ENDBR. (_dl_runtime_profile): Likewise. (_dl_runtime_resolve_shstk): New. (_dl_runtime_profile_shstk): Likewise. * sysdeps/linux/x86/Makefile (sysdep-dl-routines): Add dl-cet if CET is enabled. (CFLAGS-.o): Add -fcf-protection if CET is enabled. (CFLAGS-.os): Likewise. (CFLAGS-.op): Likewise. (CFLAGS-.oS): Likewise. (asm-CPPFLAGS): Add -fcf-protection -include cet.h if CET is enabled. (tests-special): Add $(objpfx)check-cet.out. (cet-built-dso): New. (+$(cet-built-dso:=.note)): Likewise. (common-generated): Add $(cet-built-dso:$(common-objpfx)%=%.note). ($(objpfx)check-cet.out): New. (generated): Add check-cet.out. * sysdeps/x86/cpu-features.c: Include <dl-cet.h> and <cet-tunables.h>. (TUNABLE_CALLBACK (set_x86_ibt)): New prototype. (TUNABLE_CALLBACK (set_x86_shstk)): Likewise. (init_cpu_features): Call get_cet_status to check CET status and update dl_x86_feature_1 with CET status. Call TUNABLE_CALLBACK (set_x86_ibt) and TUNABLE_CALLBACK (set_x86_shstk). Disable and lock CET in libc.a. * sysdeps/x86/cpu-tunables.c: Include <cet-tunables.h>. (TUNABLE_CALLBACK (set_x86_ibt)): New function. (TUNABLE_CALLBACK (set_x86_shstk)): Likewise. * sysdeps/x86/sysdep.h (_CET_NOTRACK): New. (_CET_ENDBR): Define if not defined. (ENTRY): Add _CET_ENDBR. * sysdeps/x86/dl-tunables.list (glibc.tune): Add x86_ibt and x86_shstk. * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Add _CET_ENDBR. (_dl_runtime_profile): Likewise.
* powerpc64: Always restore TOC on longjmp [BZ #21895]Rogerio Alves2018-07-165-4/+151
| | | | | | | | | | | | | | | | | | | This patch changes longjmp to always restore the TOC pointer (r2 register) to the caller frame on powerpc64 and powerpc64le. This is related to bug 21895 that reports a situation where you have a static longjmp to a shared object file. [BZ #21895] * sysdeps/powerpc/powerpc64/__longjmp-common.S: Remove condition code for restoring r2 in longjmp. * sysdeps/powerpc/powerpc64/Makefile: Added tst-setjmp-bug21895-static to test list. Added rules to build test tst-setjmp-bug21895-static. Added module setjmp-bug21895 and rules to build a shared object from it. * sysdeps/powerpc/powerpc64/setjmp-bug21895.c: New test file. * sysdeps/powerpc/powerpc64/tst-setjmp-bug21895-static.c: New test file. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
* Improve strstr performanceWilco Dijkstra2018-07-169-33/+50
| | | | | | | | | | | | | | | | | | Improve strstr performance. Strstr tends to be slow because it uses many calls to memchr and a slow byte loop to scan for the next match. Performance is significantly improved by using strnlen on larger blocks and using strchr to search for the next matching character. strcasestr can also use strnlen to scan ahead, and memmem can use memchr to check for the next match. On the GLIBC bench tests the performance gains on Cortex-A72 are: strstr: +25% strcasestr: +4.3% memmem: +18% On a 256KB dataset strstr performance improves by 67%, strcasestr by 47%. Reviewd-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* x86_64: Undef SHADOW_STACK_POINTER_OFFSET lastH.J. Lu2018-07-152-3/+7
| | | | | | | | Since SHADOW_STACK_POINTER_OFFSET is defined in jmp_buf-ssp.h, we must undef SHADOW_STACK_POINTER_OFFSET after including <jmp_buf-ssp.h>. * sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Undef SHADOW_STACK_POINTER_OFFSET after including <jmp_buf-ssp.h>.
* x86: Support shadow stack pointer in setjmp/longjmpH.J. Lu2018-07-1412-1/+315
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Save and restore shadow stack pointer in setjmp and longjmp to support shadow stack in Intel CET. Use feature_1 in tcbhead_t to check if shadow stack is enabled before saving and restoring shadow stack pointer. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * sysdeps/i386/__longjmp.S: Include <jmp_buf-ssp.h>. (__longjmp): Restore shadow stack pointer if shadow stack is enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp isn't defined for __longjmp_cancel. * sysdeps/i386/bsd-_setjmp.S: Include <jmp_buf-ssp.h>. (_setjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/i386/bsd-setjmp.S: Include <jmp_buf-ssp.h>. (setjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/i386/setjmp.S: Include <jmp_buf-ssp.h>. (__sigsetjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Include <jmp_buf-ssp.h>. (____longjmp_chk): Restore shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/unix/sysv/linux/x86/Makefile (gen-as-const-headers): Remove jmp_buf-ssp.sym. * sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Include <jmp_buf-ssp.h>. (____longjmp_chk): Restore shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/x86/Makefile (gen-as-const-headers): Add jmp_buf-ssp.sym. * sysdeps/x86/jmp_buf-ssp.sym: New dummy file. * sysdeps/x86_64/__longjmp.S: Include <jmp_buf-ssp.h>. (__longjmp): Restore shadow stack pointer if shadow stack is enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp isn't defined for __longjmp_cancel. * sysdeps/x86_64/setjmp.S: Include <jmp_buf-ssp.h>. (__sigsetjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined.
* x86: Rename __glibc_reserved1 to feature_1 in tcbhead_t [BZ #22563]H.J. Lu2018-07-149-2/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | feature_1 has X86_FEATURE_1_IBT and X86_FEATURE_1_SHSTK bits for CET run-time control. CET_ENABLED, IBT_ENABLED and SHSTK_ENABLED are defined to 1 or 0 to indicate that if CET, IBT and SHSTK are enabled. <tls-setup.h> is added to set up thread-local data. Reviewed-by: Carlos O'Donell <carlos@redhat.com> [BZ #22563] * nptl/pthread_create.c: Include <tls-setup.h>. (__pthread_create_2_1): Call tls_setup_tcbhead. * sysdeps/generic/tls-setup.h: New file. * sysdeps/x86/nptl/tls-setup.h: Likewise. * sysdeps/i386/nptl/tcb-offsets.sym (FEATURE_1_OFFSET): New. * sysdeps/x86_64/nptl/tcb-offsets.sym (FEATURE_1_OFFSET): Likewise. * sysdeps/i386/nptl/tls.h (tcbhead_t): Rename __glibc_reserved1 to feature_1. * sysdeps/x86_64/nptl/tls.h (tcbhead_t): Likewise. * sysdeps/x86/sysdep.h (X86_FEATURE_1_IBT): New. (X86_FEATURE_1_SHSTK): Likewise. (CET_ENABLED): Likewise. (IBT_ENABLED): Likewise. (SHSTK_ENABLED): Likewise.
* dsb_DE locale: Fix syntax error and add tests (bug 23208).Rafal Luzynski2018-07-134-2/+85
| | | | | | | | | | | | | Fixed syntax error in the collation rules of Lower Sorbian language. Collation test added in order to test the bugs like this early. Reported-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> [BZ #23208] * localedata/Makefile (test-input): Add dsb_DE.UTF-8. (LOCALES): Likewise. * localedata/dsb_DE.UTF-8.in: New file. * localedata/locales/dsb_DE (LC_COLLATE): Fix syntax error.
* nptl: Use __mprotect consistently for _STACK_GROWS_UPFlorian Weimer2018-07-122-1/+6
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* Install <bits/statx.h> headerFlorian Weimer2018-07-112-1/+5
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* Put the correct Unicode version number 11.0.0 into the generated filesMike FABIAN2018-07-105-45/+88
| | | | | | | | | | | In some places there was still the old Unicode version 10.0.0 in the files. * localedata/charmaps/UTF-8: Use correct Unicode version 11.0.0 in comment. * localedata/locales/i18n_ctype: Use correct Unicode version in comments and headers. * localedata/unicode-gen/utf8_gen.py: Add option to specify Unicode version * localedata/unicode-gen/Makefile: Use option to specify Unicode version for utf8_gen.py
* Add the statx functionFlorian Weimer2018-07-1044-1/+490
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* Comment tst-ofdlocks-compat expected failure in some Linux releasesAdhemerval Zanella2018-07-102-0/+13
| | | | | | | | | | | | | As pointed out in a libc-alpha thread [1], the misc/tst-ofdlocks-compat may fail in some specific Linux releases. This patch adds a comment along with a link to discussion in the test source code. No changes are expected. * sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Add a comment about a kernel issue which lead to test failure in some cases. [1] https://sourceware.org/ml/libc-alpha/2018-07/msg00243.html
* regexec: Fix off-by-one bug in weight comparison [BZ #23036]Florian Weimer2018-07-102-23/+27
| | | | | | | | | Each weight is prefixed by its length, and the length does not include itself in the count. This can be seen clearly from the find_idx function in string/strxfrm_l.c, for example. The old code behaved as if the length itself counted, thus comparing an additional byte after the weight, leading to spurious comparison failures and incorrect further partitioning of character equivalence classes.
* Fix copyright years in recent commitsFlorian Weimer2018-07-104-3/+9
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* nss_files: Fix re-reading of long lines [BZ #18991]Florian Weimer2018-07-064-71/+339
| | | | | Use the new __libc_readline_unlocked function to pick up reading at the same line in case the buffer needs to be enlarged.
* libio: Implement internal function __libc_readline_unlockedFlorian Weimer2018-07-0610-9/+471
| | | | | | | | | | | This is a variant of fgets which fails with ERANGE if the buffer is too small, and the buffer length is given as an argument of type size_t. This function will be useful for implementing NSS file reading operations. Compared to a direct implementation using the public API, it avoids an lseek system call in case the line terminator can be found in the internal read buffer.
* aarch64: add HWCAP_ATOMICS to HWCAP_IMPORTANTSzabolcs Nagy2018-07-062-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This enables searching shared libraries in atomics/ when the hardware supports LSE atomics of armv8.1 so one can provide optimized variants of libraries in a portable way. LSE atomics does not affect library abi, the new instructions can interoperate with old ones. I considered the earlier comments on the patch https://sourceware.org/ml/libc-alpha/2018-04/msg00400.html https://sourceware.org/ml/libc-alpha/2018-04/msg00625.html It turns out that the way glibc dynamic linker decides on the search path is not very flexible: it wants to use hwcap bits and associated strings. So some targets reuse hwcap bits for glibc internal purposes to affect the search logic. But hwcap is an interface with the kernel, glibc should not allocate bits in it for its internal logic as that limits future hwcap extensions and confusing to users who expect to see hwcap bits in ifunc resolvers. Instead of rewriting the dynamic linker path logic (which affects all targets) this patch just uses the existing mechanism, however this means that the path name has to be the hwcap name "atomics" and cannot be changed to something more meaningful to users. It is hard to tell how much performance benefit this can give, in principle armv8.1 atomics can be better optimized in the hardware, so it can make a difference for synchronization heavy code. On some systems such multilib setup may be the only viable way to get optimized libraries used. * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h (HWCAP_IMPORTANT): Add HWCAP_ATOMICS.
* aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANTSzabolcs Nagy2018-07-063-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This partially reverts commit f82e9672ad89ea1ef40bbe1af71478e255e87c5e Author: Siddhesh Poyarekar <siddhesh@sourceware.org> aarch64: Allow overriding HWCAP_CPUID feature check using HWCAP_MASK The idea was to make it possible to disable cpuid based ifunc resolution in glibc by changing the hwcap mask which the user could already control. However the hwcap mask has an orthogonal role: it specifies additional library search paths for the dynamic linker. So "cpuid" got added to the search paths when it was set in the default mask (HWCAP_IMPORTANT), which is not useful behaviour, the hwcap masking should not be reused in the cpu features code. Meanwhile there is a tunable to set the cpu explicitly so it is possible to disable the cpuid based dispatch without using a hwcap mask: GLIBC_TUNABLES=glibc.tune.cpu=generic * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (init_cpu_features): Use dl_hwcap without masking. * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h (HWCAP_IMPORTANT): Remove HWCAP_CPUID.
* conform/conformtest.pl: Escape literal braces in regular expressionsFlorian Weimer2018-07-062-13/+18
| | | | | | | | | | | This suppresses Perl warnings like these: Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.32), passed through in regex; marked by <-- HERE in m/^element *({ <-- HERE ([^}]*)}|([^{ ]*)) *({([^}]*)}|([^{ ]*)) *([A-Za-z0-9_]*) *(.*)/ at conformtest.pl line 370. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Use AVX_Fast_Unaligned_Load from Zen onwards.Amit Pawar2018-07-062-5/+20
| | | | | | | From Zen onwards this will be enabled. It was disabled for the Excavator case and will remain disabled. Reviewd-by: Carlos O'Donell <carlos@redhat.com>
* Build csu/elf-init.c and csu/static-reloc.c with stack protectorFlorian Weimer2018-07-052-0/+22
| | | | | | | This does not change generated code (with -fstack-protector-strong), but is important for formal compiler flags compliance. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Compile debug/stack_chk_fail_local.c with stack protectorFlorian Weimer2018-07-052-2/+13
| | | | | The resulting object file is statically linked into applications, so it is desirable to have (formal) stack protector coverage there.
* libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307]Maciej W. Rozycki2018-07-054-0/+19
| | | | | | | | | | | | | | | | | | | | Define a new ABSOLUTE ABI for static linker's use with EI_ABIVERSION where correct absolute (SHN_ABS) symbol run-time load semantics is required. This way it can be ensured at static link time that a program or DSO will not suffer from previous semantics where absolute symbols were relocated by the base address, or symbols whose `st_value' is zero silently ignored leading to a confusing "undefined symbol" error message at load time, and instead "ELF file ABI version invalid" is printed with old dynamic loaders, making it clear that there is an ABI version incompatibility. [BZ #19818] [BZ #23307] * libc-abis (ABSOLUTE): New ABI. * sysdeps/unix/sysv/linux/mips/libc-abis (ABSOLUTE): New ABI. * NEWS: Mention the new ABI. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Add renameat2 function [BZ #17662]Florian Weimer2018-07-0545-5/+400
| | | | | | | The implementation falls back to renameat if renameat2 is not available in the kernel (or in the kernel headers) and the flags argument is zero. Without kernel support, a non-zero argument returns EINVAL, not ENOSYS. This mirrors what the kernel does for invalid renameat2 flags.
* posix: Fix bug-regex33 after regex syncAdhemerval Zanella2018-07-042-3/+7
| | | | | | | | | | | On some platforms the inclusion of regex-internal.h in bug-regex33 testcase show a MAX redefinition if test-skeleton.c is include later. This patch fixes by removing regex-internal.h inclusion and using SBC_MAX value directly. Checked on aarch64-linux-gnu. * posix/bug-regex33.c: Fix build after regex sync.
* locale: XFAIL newlocale usage in static binary (Bug 23164)Carlos O'Donell2018-07-048-27/+176
| | | | | | | | | | | | | | There is a glibc optimization which allows for locale categories to be removed during static compilation. There have been various bugs for this support over the years, with bug 16915 being the most recent. The solution there was to emit a reference to all the categories to avoid any being removed. This fix, although it's in the generic __nl_langinfo_l function, doesn't appear to be enough to fix the case for a statically linked program that uses newlocale and nl_langinfo_l. This commit doesn't fix the problem, but it does add a XFAIL'd test case such that a fix can be applied against this and the XFAIL removed. It's not entirely clear that the problem is the same as that which was seen in bug 16915.
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