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* Remove redundant mention of SXID_ERASESiddhesh Poyarekar2017-12-151-10/+1
| | | | | | | SXID_ERASE is implicit for all environment variables. Avoid mentioning it in the tunables list; that way only the ones with SXID_IGNORE remain prominent and mentioned. TODO: we need to audit each of those cases and drop them to SXID_ERASE wherever possible.
* elf: Count components of the expanded path in _dl_init_path [BZ #22607]Florian Weimer2017-12-141-9/+4
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* elf: Compute correct array size in _dl_init_paths [BZ #22606]Florian Weimer2017-12-141-7/+7
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* Fix testing with nss-crypt.Carlos O'Donell2017-12-121-1/+1
| | | | | | | | | | | | | | | | | | A glibc master build with --enable-nss-crypt using the NSS crypto libraries fails during make check with the following error: <command-line>:0:0: error: "USE_CRYPT" redefined [-Werror] <command-line>:0:0: note: this is the location of the previous definition This is caused by commit 36975e8e7ea227f7006abdc722ecfefe2079429b by H.J. Lu which replaces all = with +=. The fix is to undefine USE_CRYPT before defining it to zero. Committed as an obvious fix. Fixes the build issue on x86_64 with no regressions. Signed-off-by: Carlos O'Donell <carlos@redhat.com>
* Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.cH.J. Lu2017-12-111-22/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace = with += in CFLAGS-xxx.c and CPPFLAGS-xxx.c to allow Makefile under sysdeps to define CFLAGS-xx.c and CPPFLAGS-xxx.c. * argp/Makefile (CFLAGS-argp-help.c): Replace = with +=. (CFLAGS-argp-parse.c): Likewise. (CFLAGS-argp-fmtstream.c): Likewise. * crypt/Makefile (CPPFLAGS-sha256-crypt.c): Likewise. (CPPFLAGS-sha512-crypt.c): Likewise. (CPPFLAGS-md5-crypt.c): Likewise. * debug/Makefile (CFLAGS-stack_chk_fail.c): Likewise. (CFLAGS-stack_chk_fail_local.c): Likewise. (CFLAGS-backtrace.c): Likewise. (CFLAGS-sprintf_chk.c): Likewise. (CFLAGS-snprintf_chk.c): Likewise. (CFLAGS-vsprintf_chk.c): Likewise. (CFLAGS-vsnprintf_chk.c): Likewise. (CFLAGS-asprintf_chk.c): Likewise. (CFLAGS-vasprintf_chk.c): Likewise. (CFLAGS-obprintf_chk.c): Likewise. (CFLAGS-dprintf_chk.c): Likewise. (CFLAGS-vdprintf_chk.c): Likewise. (CFLAGS-printf_chk.c): Likewise. (CFLAGS-fprintf_chk.c): Likewise. (CFLAGS-vprintf_chk.c): Likewise. (CFLAGS-vfprintf_chk.c): Likewise. (CFLAGS-gets_chk.c): Likewise. (CFLAGS-fgets_chk.c): Likewise. (CFLAGS-fgets_u_chk.c): Likewise. (CFLAGS-fread_chk.c): Likewise. (CFLAGS-fread_u_chk.c): Likewise. (CFLAGS-swprintf_chk.c): Likewise. (CFLAGS-vswprintf_chk.c): Likewise. (CFLAGS-wprintf_chk.c): Likewise. (CFLAGS-fwprintf_chk.c): Likewise. (CFLAGS-vwprintf_chk.c): Likewise. (CFLAGS-vfwprintf_chk.c): Likewise. (CFLAGS-fgetws_chk.c): Likewise. (CFLAGS-fgetws_u_chk.c): Likewise. (CFLAGS-read_chk.c): Likewise. (CFLAGS-pread_chk.c): Likewise. (CFLAGS-pread64_chk.c): Likewise. (CFLAGS-recv_chk.c): Likewise. (CFLAGS-recvfrom_chk.c): Likewise. (CFLAGS-tst-longjmp_chk.c): Likewise. (CPPFLAGS-tst-longjmp_chk.c): Likewise. (CFLAGS-tst-longjmp_chk2.c): Likewise. (CPPFLAGS-tst-longjmp_chk2.c): Likewise. (CFLAGS-tst-longjmp_chk3.c): Likewise. (CPPFLAGS-tst-longjmp_chk3.c): Likewise. (CFLAGS-tst-chk1.c): Likewise. (CFLAGS-tst-chk2.c): Likewise. (CFLAGS-tst-chk3.c): Likewise. (CFLAGS-tst-chk4.cc): Likewise. (CFLAGS-tst-chk5.cc): Likewise. (CFLAGS-tst-chk6.cc): Likewise. (CFLAGS-tst-lfschk1.c): Likewise. (CFLAGS-tst-lfschk2.c): Likewise. (CFLAGS-tst-lfschk3.c): Likewise. (CFLAGS-tst-lfschk4.cc): Likewise. (CFLAGS-tst-lfschk5.cc): Likewise. (CFLAGS-tst-lfschk6.cc): Likewise. (CFLAGS-tst-ssp-1.c): Likewise. * dirent/Makefile (CFLAGS-scandir.c): Likewise. (CFLAGS-scandir64.c): Likewise. (CFLAGS-scandir-tail.c): Likewise. (CFLAGS-scandir64-tail.c): Likewise. * elf/Makefile (CPPFLAGS-dl-tunables.c): Likewise. (CFLAGS-dl-tunables.c): Likewise. (CFLAGS-dl-runtime.c): Likewise. (CFLAGS-dl-lookup.c): Likewise. (CFLAGS-dl-iterate-phdr.c): Likewise. (CFLAGS-vismain.c): Likewise. (CFLAGS-tst-linkall-static.c): Likewise. (CFLAGS-tst-linkall-static.c): Likewise. (CPPFLAGS-dl-load.c): Likewise. (CFLAGS-ldconfig.c): Likewise. (CFLAGS-dl-cache.c): Likewise. (CFLAGS-cache.c): Likewise. (CFLAGS-rtld.c): Likewise. (CFLAGS-multiload.c): Likewise. (CFLAGS-filtmod1.c): Likewise. (CFLAGS-tst-align.c): Likewise. (CFLAGS-tst-align2.c): Likewise. (CFLAGS-tst-alignmod.c): Likewise. (CFLAGS-tst-alignmod2.c): Likewise. (CPPFLAGS-tst-execstack.c): Likewise. (CFLAGS-tst-ptrguard1-static.c): Likewise. (CFLAGS-tst-latepthreadmod.c): Likewise. * grp/Makefile (CFLAGS-getgrgid_r.c): Likewise. (CFLAGS-getgrnam_r.c): Likewise. (CFLAGS-getgrent_r.c): Likewise. (CFLAGS-getgrent.c): Likewise. (CFLAGS-fgetgrent.c): Likewise. (CFLAGS-fgetgrent_r.c): Likewise. (CFLAGS-putgrent.c): Likewise. (CFLAGS-initgroups.c): Likewise. (CFLAGS-getgrgid.c): Likewise. * gshadow/Makefile (CFLAGS-getsgent_r.c): Likewise. (CFLAGS-getsgent.c): Likewise. (CFLAGS-fgetsgent.c): Likewise. (CFLAGS-fgetsgent_r.c): Likewise. (CFLAGS-putsgent.c): Likewise. (CFLAGS-getsgnam.c): Likewise. (CFLAGS-getsgnam_r.c): Likewise. * iconv/Makefile (CFLAGS-iconv_prog.c): Likewise. (CFLAGS-iconv_charmap.c): Likewise. (CFLAGS-dummy-repertoire.c): Likewise. (CFLAGS-charmap.c): Likewise. (CFLAGS-linereader.c): Likewise. (CFLAGS-simple-hash.c): Likewise. (CFLAGS-gconv_conf.c): Likewise. (CFLAGS-iconvconfig.c): Likewise. * inet/Makefile (CFLAGS-gethstbyad_r.c): Likewise. (CFLAGS-gethstbyad.c): Likewise. (CFLAGS-gethstbynm_r.c): Likewise. (CFLAGS-gethstbynm.c): Likewise. (CFLAGS-gethstbynm2_r.c): Likewise. (CFLAGS-gethstbynm2.c): Likewise. (CFLAGS-gethstent_r.c): Likewise. (CFLAGS-gethstent.c): Likewise. (CFLAGS-rcmd.c): Likewise. (CFLAGS-getnetbynm_r.c): Likewise. (CFLAGS-getnetbynm.c): Likewise. (CFLAGS-getnetbyad_r.c): Likewise. (CFLAGS-getnetbyad.c): Likewise. (CFLAGS-getnetent_r.c): Likewise. (CFLAGS-getnetent.c): Likewise. (CFLAGS-getaliasent_r.c): Likewise. (CFLAGS-getaliasent.c): Likewise. (CFLAGS-getrpcent_r.c): Likewise. (CFLAGS-getrpcent.c): Likewise. (CFLAGS-getservent_r.c): Likewise. (CFLAGS-getservent.c): Likewise. (CFLAGS-getprtent_r.c): Likewise. (CFLAGS-getprtent.c): Likewise. (CFLAGS-either_ntoh.c): Likewise. (CFLAGS-either_hton.c): Likewise. (CFLAGS-getnetgrent.c): Likewise. (CFLAGS-getnetgrent_r.c): Likewise. (CFLAGS-tst-checks-posix.c): Likewise. (CFLAGS-tst-sockaddr.c): Likewise. * intl/Makefile (CFLAGS-tst-gettext.c): Likewise. (CFLAGS-tst-translit.c): Likewise. (CFLAGS-tst-gettext2.c): Likewise. (CFLAGS-tst-codeset.c): Likewise. (CFLAGS-tst-gettext3.c): Likewise. (CFLAGS-tst-gettext4.c): Likewise. (CFLAGS-tst-gettext5.c): Likewise. (CFLAGS-tst-gettext6.c): Likewise. * io/Makefile (CFLAGS-open.c): Likewise. (CFLAGS-open64.c): Likewise. (CFLAGS-creat.c): Likewise. (CFLAGS-creat64.c): Likewise. (CFLAGS-fcntl.c): Likewise. (CFLAGS-poll.c): Likewise. (CFLAGS-ppoll.c): Likewise. (CFLAGS-lockf.c): Likewise. (CFLAGS-statfs.c): Likewise. (CFLAGS-fstatfs.c): Likewise. (CFLAGS-statvfs.c): Likewise. (CFLAGS-fstatvfs.c): Likewise. (CFLAGS-fts.c): Likewise. (CFLAGS-fts64.c): Likewise. (CFLAGS-ftw.c): Likewise. (CFLAGS-ftw64.c): Likewise. (CFLAGS-lockf.c): Likewise. (CFLAGS-posix_fallocate.c): Likewise. (CFLAGS-posix_fallocate64.c): Likewise. (CFLAGS-fallocate.c): Likewise. (CFLAGS-fallocate64.c): Likewise. (CFLAGS-read.c): Likewise. (CFLAGS-write.c): Likewise. (CFLAGS-test-stat.c): Likewise. (CFLAGS-test-lfs.c): Likewise. * libio/Makefile (CFLAGS-fileops.c): Likewise. (CFLAGS-fputc.c): Likewise. (CFLAGS-fputwc.c): Likewise. (CFLAGS-freopen64.c): Likewise. (CFLAGS-freopen.c): Likewise. (CFLAGS-fseek.c): Likewise. (CFLAGS-fseeko64.c): Likewise. (CFLAGS-fseeko.c): Likewise. (CFLAGS-ftello64.c): Likewise. (CFLAGS-ftello.c): Likewise. (CFLAGS-fwide.c): Likewise. (CFLAGS-genops.c): Likewise. (CFLAGS-getc.c): Likewise. (CFLAGS-getchar.c): Likewise. (CFLAGS-getwc.c): Likewise. (CFLAGS-getwchar.c): Likewise. (CFLAGS-iofclose.c): Likewise. (CFLAGS-iofflush.c): Likewise. (CFLAGS-iofgetpos64.c): Likewise. (CFLAGS-iofgetpos.c): Likewise. (CFLAGS-iofgets.c): Likewise. (CFLAGS-iofgetws.c): Likewise. (CFLAGS-iofputs.c): Likewise. (CFLAGS-iofputws.c): Likewise. (CFLAGS-iofread.c): Likewise. (CFLAGS-iofsetpos64.c): Likewise. (CFLAGS-iofsetpos.c): Likewise. (CFLAGS-ioftell.c): Likewise. (CFLAGS-iofwrite.c): Likewise. (CFLAGS-iogetdelim.c): Likewise. (CFLAGS-iogetline.c): Likewise. (CFLAGS-iogets.c): Likewise. (CFLAGS-iogetwline.c): Likewise. (CFLAGS-ioputs.c): Likewise. (CFLAGS-ioseekoff.c): Likewise. (CFLAGS-ioseekpos.c): Likewise. (CFLAGS-iosetbuffer.c): Likewise. (CFLAGS-iosetvbuf.c): Likewise. (CFLAGS-ioungetc.c): Likewise. (CFLAGS-ioungetwc.c): Likewise. (CFLAGS-oldfileops.c): Likewise. (CFLAGS-oldiofclose.c): Likewise. (CFLAGS-oldiofgetpos64.c): Likewise. (CFLAGS-oldiofgetpos.c): Likewise. (CFLAGS-oldiofsetpos64.c): Likewise. (CFLAGS-oldiofsetpos.c): Likewise. (CFLAGS-peekc.c): Likewise. (CFLAGS-putc.c): Likewise. (CFLAGS-putchar.c): Likewise. (CFLAGS-putwc.c): Likewise. (CFLAGS-putwchar.c): Likewise. (CFLAGS-rewind.c): Likewise. (CFLAGS-wfileops.c): Likewise. (CFLAGS-wgenops.c): Likewise. (CFLAGS-oldiofopen.c): Likewise. (CFLAGS-iofopen.c): Likewise. (CFLAGS-iofopen64.c): Likewise. (CFLAGS-oldtmpfile.c): Likewise. (CFLAGS-tst_putwc.c): Likewise. * locale/Makefile (CFLAGS-md5.c): Likewise. (CFLAGS-charmap.c): Likewise. (CFLAGS-locfile.c): Likewise. (CFLAGS-charmap-dir.c): Likewise. * login/Makefile (CFLAGS-grantpt.c): Likewise. (CFLAGS-getpt.c): Likewise. (CFLAGS-pt_chown.c): Likewise. * malloc/Makefile (CFLAGS-mcheck-init.c): Likewise. (CFLAGS-obstack.c): Likewise. * math/Makefile (CFLAGS-test-tgmath3.c): Likewise. (CFLAGS-test-double-vlen4-wrappers.c): Likewise. (CFLAGS-test-double-vlen8-wrappers.c): Likewise. (CFLAGS-test-float-vlen8-wrappers.c): Likewise. (CFLAGS-test-float-vlen16-wrappers.c): Likewise. (CFLAGS-test-tgmath.c): Likewise. (CFLAGS-test-tgmath2.c): Likewise. (CFLAGS-test-tgmath-ret.c): Likewise. (CFLAGS-test-powl.c): Likewise. (CFLAGS-test-snan.c): Likewise. (CFLAGS-test-signgam-finite.c): Likewise. (CFLAGS-test-signgam-finite-c99.c): Likewise. (CFLAGS-test-signgam-finite-c11.c): Likewise. (CFLAGS-test-signgam-uchar.c): Likewise. (CFLAGS-test-signgam-uchar-init.c): Likewise. (CFLAGS-test-signgam-uchar-static.c): Likewise. (CFLAGS-test-signgam-uchar-init-static.c): Likewise. (CFLAGS-test-signgam-uint.c): Likewise. (CFLAGS-test-signgam-uint-init.c): Likewise. (CFLAGS-test-signgam-uint-static.c): Likewise. (CFLAGS-test-signgam-uint-init-static.c): Likewise. (CFLAGS-test-signgam-ullong.c): Likewise. (CFLAGS-test-signgam-ullong-init.c): Likewise. (CFLAGS-test-signgam-ullong-static.c): Likewise. (CFLAGS-test-signgam-ullong-init-static.c): Likewise. (CFLAGS-test-math-cxx11.cc): Likewise. (CFLAGS-test-math-isinff.cc): Likewise. (CFLAGS-test-math-iszero.cc): Likewise. (CFLAGS-test-math-issignaling.cc): Likewise. (CFLAGS-test-math-iscanonical.cc): Likewise. (CFLAGS-test-iszero-excess-precision.c): Likewise. (CFLAGS-test-iseqsig-excess-precision.c): Likewise. (CFLAGS-test-flt-eval-method.c): Likewise. (CFLAGS-test-fe-snans-always-signal.c): Likewise. (CFLAGS-test-finite-macros.c): Likewise. * misc/Makefile (CFLAGS-select.c): Likewise. (CFLAGS-tsearch.c): Likewise. (CFLAGS-lsearch.c): Likewise. (CFLAGS-pselect.c): Likewise. (CFLAGS-readv.c): Likewise. (CFLAGS-writev.c): Likewise. (CFLAGS-preadv.c): Likewise. (CFLAGS-preadv64.c): Likewise. (CFLAGS-pwritev.c): Likewise. (CFLAGS-pwritev64.c): Likewise. (CFLAGS-preadv2.c): Likewise. (CFLAGS-preadv64v2.c): Likewise. (CFLAGS-pwritev2.c): Likewise. (CFLAGS-pwritev64v2.c): Likewise. (CFLAGS-usleep.c): Likewise. (CFLAGS-syslog.c): Likewise. (CFLAGS-error.c): Likewise. (CFLAGS-getpass.c): Likewise. (CFLAGS-mkstemp.c): Likewise. (CFLAGS-mkstemp64.c): Likewise. (CFLAGS-getsysstats.c): Likewise. (CFLAGS-getusershell.c): Likewise. (CFLAGS-err.c): Likewise. (CFLAGS-tst-tsearch.c): Likewise. (CFLAGS-msync.c): Likewise. (CFLAGS-fdatasync.c): Likewise. (CFLAGS-fsync.c): Likewise. * nptl/Makefile (CFLAGS-nptl-init.c): Likewise. (CFLAGS-unwind.c): Likewise. (CFLAGS-unwind-forcedunwind.c): Likewise. (CFLAGS-pthread_cancel.c): Likewise. (CFLAGS-pthread_setcancelstate.c): Likewise. (CFLAGS-pthread_setcanceltype.c): Likewise. (CFLAGS-cancellation.c): Likewise. (CFLAGS-libc-cancellation.c): Likewise. (CFLAGS-pthread_exit.c): Likewise. (CFLAGS-forward.c): Likewise. (CFLAGS-pthread_testcancel.c): Likewise. (CFLAGS-pthread_join.c): Likewise. (CFLAGS-pthread_timedjoin.c): Likewise. (CFLAGS-pthread_once.c): Likewise. (CFLAGS-pthread_cond_wait.c): Likewise. (CFLAGS-sem_wait.c): Likewise. (CFLAGS-sem_timedwait.c): Likewise. (CFLAGS-fcntl.c): Likewise. (CFLAGS-lockf.c): Likewise. (CFLAGS-pread.c): Likewise. (CFLAGS-pread64.c): Likewise. (CFLAGS-pwrite.c): Likewise. (CFLAGS-pwrite64.c): Likewise. (CFLAGS-wait.c): Likewise. (CFLAGS-waitpid.c): Likewise. (CFLAGS-sigwait.c): Likewise. (CFLAGS-msgrcv.c): Likewise. (CFLAGS-msgsnd.c): Likewise. (CFLAGS-tcdrain.c): Likewise. (CFLAGS-open.c): Likewise. (CFLAGS-open64.c): Likewise. (CFLAGS-pause.c): Likewise. (CFLAGS-recv.c): Likewise. (CFLAGS-send.c): Likewise. (CFLAGS-accept.c): Likewise. (CFLAGS-sendto.c): Likewise. (CFLAGS-connect.c): Likewise. (CFLAGS-recvfrom.c): Likewise. (CFLAGS-recvmsg.c): Likewise. (CFLAGS-sendmsg.c): Likewise. (CFLAGS-close.c): Likewise. (CFLAGS-read.c): Likewise. (CFLAGS-write.c): Likewise. (CFLAGS-nanosleep.c): Likewise. (CFLAGS-sigsuspend.c): Likewise. (CFLAGS-msync.c): Likewise. (CFLAGS-fdatasync.c): Likewise. (CFLAGS-fsync.c): Likewise. (CFLAGS-pt-system.c): Likewise. (CFLAGS-tst-cleanup2.c): Likewise. (CFLAGS-tst-cleanupx2.c): Likewise. (CFLAGS-flockfile.c): Likewise. (CFLAGS-ftrylockfile.c): Likewise. (CFLAGS-funlockfile.c): Likewise. (CFLAGS-tst-initializers1.c): Likewise. (CFLAGS-tst-initializers1-c89.c): Likewise. (CFLAGS-tst-initializers1-c99.c): Likewise. (CFLAGS-tst-initializers1-c11.c): Likewise. (CFLAGS-tst-initializers1-gnu89.c): Likewise. (CFLAGS-tst-initializers1-gnu99.c): Likewise. (CFLAGS-tst-initializers1-gnu11.c): Likewise. * nscd/Makefile (CFLAGS-nscd_getpw_r.c): Likewise. (CFLAGS-nscd_getgr_r.c): Likewise. (CFLAGS-nscd_gethst_r.c): Likewise. (CFLAGS-nscd_getai.c): Likewise. (CFLAGS-nscd_initgroups.c): Likewise. * posix/Makefile (CFLAGS-getaddrinfo.c): Likewise. (CFLAGS-pause.c): Likewise. (CFLAGS-pread.c): Likewise. (CFLAGS-pread64.c): Likewise. (CFLAGS-pwrite.c): Likewise. (CFLAGS-pwrite64.c): Likewise. (CFLAGS-sleep.c): Likewise. (CFLAGS-wait.c): Likewise. (CFLAGS-waitid.c): Likewise. (CFLAGS-waitpid.c): Likewise. (CFLAGS-getopt.c): Likewise. (CFLAGS-wordexp.c): Likewise. (CFLAGS-sysconf.c): Likewise. (CFLAGS-pathconf.c): Likewise. (CFLAGS-fpathconf.c): Likewise. (CFLAGS-spawn.c): Likewise. (CFLAGS-spawnp.c): Likewise. (CFLAGS-spawni.c): Likewise. (CFLAGS-glob.c): Likewise. (CFLAGS-glob64.c): Likewise. (CFLAGS-getconf.c): Likewise. (CFLAGS-nanosleep.c): Likewise. * pwd/Makefile (CFLAGS-getpwent_r.c): Likewise. (CFLAGS-getpwent.c): Likewise. (CFLAGS-getpw.c): Likewise. (CFLAGS-fgetpwent_r.c): Likewise. * resolv/Makefile (CFLAGS-res_hconf.c): Likewise. * rt/Makefile (CFLAGS-aio_suspend.c): Likewise. (CFLAGS-mq_timedreceive.c): Likewise. (CFLAGS-mq_timedsend.c): Likewise. (CFLAGS-clock_nanosleep.c): Likewise. (CFLAGS-librt-cancellation.c): Likewise. * shadow/Makefile (CFLAGS-getspent_r.c): Likewise. (CFLAGS-getspent.c): Likewise. (CFLAGS-fgetspent.c): Likewise. (CFLAGS-fgetspent_r.c): Likewise. (CFLAGS-putspent.c): Likewise. (CFLAGS-getspnam.c): Likewise. (CFLAGS-getspnam_r.c): Likewise. * signal/Makefile (CFLAGS-sigpause.c): Likewise. (CFLAGS-sigsuspend.c): Likewise. (CFLAGS-sigtimedwait.c): Likewise. (CFLAGS-sigwait.c): Likewise. (CFLAGS-sigwaitinfo.c): Likewise. (CFLAGS-sigreturn.c): Likewise. * stdio-common/Makefile (CFLAGS-vfprintf.c): Likewise. (CFLAGS-vfwprintf.c): Likewise. (CFLAGS-tmpfile.c): Likewise. (CFLAGS-tmpfile64.c): Likewise. (CFLAGS-tempname.c): Likewise. (CFLAGS-psignal.c): Likewise. (CFLAGS-vprintf.c): Likewise. (CFLAGS-cuserid.c): Likewise. (CFLAGS-errlist.c): Likewise. (CFLAGS-siglist.c): Likewise. (CFLAGS-scanf15.c): Likewise. (CFLAGS-scanf17.c): Likewise. * stdlib/Makefile (CFLAGS-bsearch.c): Likewise. (CFLAGS-msort.c): Likewise. (CFLAGS-qsort.c): Likewise. (CFLAGS-system.c): Likewise. (CFLAGS-fmtmsg.c): Likewise. (CFLAGS-strfmon.c): Likewise. (CFLAGS-strfmon_l.c): Likewise. (CFLAGS-strfromd.c): Likewise. (CFLAGS-strfromf.c): Likewise. (CFLAGS-strfroml.c): Likewise. (CFLAGS-tst-bsearch.c): Likewise. (CFLAGS-tst-qsort.c): Likewise. (CFLAGS-tst-makecontext2.c): Likewise. * sunrpc/Makefile (CFLAGS-xbootparam_prot.c): Likewise. (CFLAGS-xnlm_prot.c): Likewise. (CFLAGS-xrstat.c): Likewise. (CFLAGS-xyppasswd.c): Likewise. (CFLAGS-xklm_prot.c): Likewise. (CFLAGS-xrex.c): Likewise. (CFLAGS-xsm_inter.c): Likewise. (CFLAGS-xmount.c): Likewise. (CFLAGS-xrusers.c): Likewise. (CFLAGS-xspray.c): Likewise. (CFLAGS-xnfs_prot.c): Likewise. (CFLAGS-xrquota.c): Likewise. (CFLAGS-xkey_prot.c): Likewise. (CFLAGS-auth_unix.c): Likewise. (CFLAGS-key_call.c): Likewise. (CFLAGS-pmap_rmt.c): Likewise. (CFLAGS-clnt_perr.c): Likewise. (CFLAGS-openchild.c): Likewise. * sysvipc/Makefile (CFLAGS-msgrcv.c): Likewise. (CFLAGS-msgsnd.c): Likewise. * termios/Makefile (CFLAGS-tcdrain.c): Likewise. * time/Makefile (CFLAGS-tzfile.c): Likewise. (CFLAGS-tzset.c): Likewise. (CFLAGS-getdate.c): Likewise. (CFLAGS-test_time.c): Likewise. (CPPFLAGS-tst-tzname.c): Likewise. * timezone/Makefile (CFLAGS-zdump.c): Likewise. (CFLAGS-zic.c): Likewise. * wcsmbs/Makefile (CFLAGS-wcwidth.c): Likewise. (CFLAGS-wcswidth.c): Likewise. (CFLAGS-wcstol.c): Likewise. (CFLAGS-wcstoul.c): Likewise. (CFLAGS-wcstoll.c): Likewise. (CFLAGS-wcstoull.c): Likewise. (CFLAGS-wcstod.c): Likewise. (CFLAGS-wcstold.c): Likewise. (CFLAGS-wcstof128.c): Likewise. (CFLAGS-wcstof.c): Likewise. (CFLAGS-wcstol_l.c): Likewise. (CFLAGS-wcstoul_l.c): Likewise. (CFLAGS-wcstoll_l.c): Likewise. (CFLAGS-wcstoull_l.c): Likewise. (CFLAGS-wcstod_l.c): Likewise. (CFLAGS-wcstold_l.c): Likewise. (CFLAGS-wcstof128_l.c): Likewise. (CFLAGS-wcstof_l.c): Likewise. (CPPFLAGS-tst-wchar-h.c): Likewise. (CPPFLAGS-wcstold_l.c): Likewise. Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
* elf/rtld.c (init_tls): Add missing new line to the _dl_fatal_printf call [BZ ↵Aurelien Jarno2017-12-101-1/+1
| | | | | | | | #22577] Changelog: * elf/rtld.c (init_tls): Add missing new line to the _dl_fatal_printf call.
* Add elision tunablesRogerio Alves2017-12-051-0/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds several new tunables to control the behavior of elision on supported platforms[1]. Since elision now depends on tunables, we should always *compile* with elision enabled, and leave the code disabled, but available for runtime selection. This gives us *much* better compile-time testing of the existing code to avoid bit-rot[2]. Tested on ppc, ppc64, ppc64le, s390x and x86_64. [1] This part of the patch was initially proposed by Paul Murphy but was "staled" because the framework have changed since the patch was originally proposed: https://patchwork.sourceware.org/patch/10342/ [2] This part of the patch was inititally proposed as a RFC by Carlos O'Donnell. Make sense to me integrate this on the patch: https://sourceware.org/ml/libc-alpha/2017-05/msg00335.html * elf/dl-tunables.list: Add elision parameters. * manual/tunables.texi: Add entries about elision tunable. * sysdeps/unix/sysv/linux/powerpc/elision-conf.c: Add callback functions to dynamically enable/disable elision. Add multiple callbacks functions to set elision parameters. Deleted __libc_enable_secure check. * sysdeps/unix/sysv/linux/s390/elision-conf.c: Likewise. * sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise. * configure: Regenerated. * configure.ac: Option enable_lock_elision was deleted. * config.h.in: ENABLE_LOCK_ELISION flag was deleted. * config.make.in: Remove references to enable_lock_elision. * manual/install.texi: Elision configure option was removed. * INSTALL: Regenerated to remove enable_lock_elision. * nptl/Makefile: Disable elision so it can verify error case for destroying a mutex. * sysdeps/powerpc/nptl/elide.h: Cleanup ENABLE_LOCK_ELISION check. Deleted macros for the case when ENABLE_LOCK_ELISION was not defined. * sysdeps/s390/configure: Regenerated. * sysdeps/s390/configure.ac: Remove references to enable_lock_elision.. * nptl/tst-mutex8.c: Deleted all #ifndef ENABLE_LOCK_ELISION from the test. * sysdeps/powerpc/powerpc32/sysdep.h: Deleted all ENABLE_LOCK_ELISION checks. * sysdeps/powerpc/powerpc64/sysdep.h: Likewise. * sysdeps/powerpc/sysdep.h: Likewise. * sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/force-elision.h: Likewise. * sysdeps/unix/sysv/linux/s390/elision-conf.h: Likewise. * sysdeps/unix/sysv/linux/s390/force-elision.h: Likewise. * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/s390/Makefile: Remove references to enable-lock-elision. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
* Properly compute offsets of note descriptor and next note [BZ #22370]H.J. Lu2017-11-283-14/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A note header has 3 4-bytes fields, followed by note name and note descriptor. According to gABI, in a note entry, the note name field, not note name size, is padded for the note descriptor. And the note descriptor field, not note descriptor size, is padded for the next note entry. Notes are aligned to 4 bytes in 32-bit objects and 8 bytes in 64-bit objects. For all GNU notes, the name is "GNU" which is 4 bytes. They have the same format in the first 16 bytes in both 32-bit and 64-bit objects. They differ by note descriptor size and note type. So far, .note.ABI-tag and .note.gnu.build-id notes are always aligned to 4 bytes. The exsting codes compute the note size by aligning the note name size and note descriptor size to 4 bytes. It happens to produce the same value as the actual note size by luck since the name size is 4 and offset of the note descriptor is 16. But it will produce the wrong size when note alignment is 8 bytes in 64-bit objects. This patch defines ELF_NOTE_DESC_OFFSET and ELF_NOTE_NEXT_OFFSET to properly compute offsets of note descriptor and next note. It uses alignment of PT_NOTE segment to support both 4-byte and 8-byte note alignments in 64-bit objects. To handle PT_NOTE segments with incorrect alignment, which may lead to an infinite loop, if segment alignment is less than 4, we treate alignment as 4 bytes since some note segments have 0 or 1 byte alignment. [BZ #22370] * elf/dl-hwcaps.c (ROUND): Removed. (_dl_important_hwcaps): Replace ROUND with ELF_NOTE_DESC_OFFSET and ELF_NOTE_NEXT_OFFSET. * elf/dl-load.c (ROUND): Removed. (open_verify): Replace ROUND with ELF_NOTE_NEXT_OFFSET. * elf/readelflib.c (ROUND): Removed. (process_elf_file): Replace ROUND with ELF_NOTE_NEXT_OFFSET. * include/elf.h [!_ISOMAC]: Include <libc-pointer-arith.h>. [!_ISOMAC] (ELF_NOTE_DESC_OFFSET): New. [!_ISOMAC] (ELF_NOTE_NEXT_OFFSET): Likewise.
* Consolidate link map sortingAndreas Schwab2017-11-276-213/+138
| | | | | | Combine the four places where link maps are sorted into a single function. This also moves the logic to skip the first map (representing the main binary) to the callers.
* ld.so: Add architecture specific fieldsH.J. Lu2017-11-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | To support Intel Control-flow Enforcement Technology (CET) run-time control: 1. An architecture specific field in the writable ld.so namespace is needed to indicate if CET features are enabled at run-time. 2. An architecture specific field in struct link_map is needed if CET features are enabled in an ELF module. This patch adds dl-procruntime.c to the writable ld.so namespace and link_map.h to struct link_map. Tested with build-many-glibcs.py. * elf/dl-support.c: Include <dl-procruntime.c>. * include/link.h: Include <link_map.h>. * sysdeps/generic/dl-procruntime.c: New file. * sysdeps/generic/link_map.h: Likewise. * sysdeps/generic/ldsodefs.h: Include <dl-procruntime.c> in the writable ld.so namespace.
* Mark lazy tlsdesc helper functions unused to avoid warningsSzabolcs Nagy2017-11-031-0/+2
| | | | | | | | These static functions are not needed if a target does not do lazy tlsdesc initialization. * elf/tlsdeschtab.h (_dl_tls_resolve_early_return_p): Mark unused. (_dl_tlsdesc_wake_up_held_fixups): Likewise.
* Assume that _DIRENT_HAVE_D_TYPE is always defined.Florian Weimer2017-10-301-15/+2
| | | | | | References remain in io/fts.c, io/ftw.c, posix/glob.c, sysdeps/posix/getcwd.c. These files are (potentially) externally shared.
* Use $(DEFAULT-LDFLAGS-$(@F)) in +link-static-before-libcH.J. Lu2017-10-041-1/+2
| | | | | | | | | | | | | | Use $(LDFLAGS-$(@F)) with tst-tls1-static-non-pie may not be sufficient when static PIE is built by default. Use $(DEFAULT-LDFLAGS-$(@F)) in +link-static-before-libc to make sure that tst-tls1-static-non-pie is always built as non-PIE static executable and make sure that crt1.o is used with tst-tls1-static-non-pie. * Makeconfig (+link-static-before-libc): Use $(DEFAULT-LDFLAGS-$(@F)). * elf/Makefile (CRT-tst-tls1-static-non-pie): New. (LDFLAGS-tst-tls1-static-non-pie): Renamed to ... (DEFAULT-LDFLAGS-tst-tls1-static-non-pie): This.
* Add a test for main () in a shared objectH.J. Lu2017-10-043-2/+53
| | | | | | | | | | | | | | Verify that crt1.o can be used with main () in a shared object. * elf/Makefile (tests): Add tst-main1. (modules-names): Add tst-main1mod. ($(objpfx)tst-main1): New. (CRT-tst-main1): Likewise. (LDFLAGS-tst-main1): Likewise. (LDLIBS-tst-main1): Likewise. (tst-main1mod.so-no-z-defs): Likewise. * elf/tst-main1.c: New file. * elf/tst-main1mod.c: Likewise.
* ld.so: Replace (&bootstrap_map) with BOOTSTRAP_MAPH.J. Lu2017-10-031-1/+2
| | | | | | | | | | | | | | | (&_dl_main_map) is used instead of (&bootstrap_map) to bootstrap static PIE. Define BOOTSTRAP_MAP with (&_dl_main_map) to avoid hardcode to (&bootstrap_map). * elf/rtld.c (BOOTSTRAP_MAP): New. (RESOLVE_MAP): Replace (&bootstrap_map) with BOOTSTRAP_MAP. * sysdeps/hppa/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC): Likewise. * sysdeps/ia64/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC): Likewise. * sysdeps/mips/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC): Likewise.
* Move hidden_proto (__dl_iterate_phdr) to include/link.h [BZ #18822]H.J. Lu2017-10-011-1/+0
| | | | | | | | | | __dl_iterate_phdr is hidden and should be accessed directly within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * elf/dl-iteratephdr.c (hidden_proto (__dl_iterate_phdr)): Moved to ... * include/link.h (hidden_proto (__dl_iterate_phdr)): Here.
* Add a test for non-PIE static executableH.J. Lu2017-09-302-1/+5
| | | | | | | | | | | tst-tls1-static-non-pie is built with $(no-pie-ldflag) to make it a non-PIE static executable, regardless if --enable-static-pie is used to configure glibc. * elf/Makefile (tests-static-internal): Add tst-tls1-static-non-pie. (LDFLAGS-tst-tls1-static-non-pie): New. * elf/tst-tls1-static-non-pie.c: New file.
* Fix range check in do_tunable_update_valAlexey Makhalov2017-09-271-11/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current implementation of tunables does not set arena_max and arena_test values. Any value provided by glibc.malloc.arena_max and glibc.malloc.arena_test parameters is ignored. These tunables have minval value set to 1 (see elf/dl-tunables.list file) and undefined maxval value. In that case default value (which is 0. see scripts/gen-tunables.awk) is being used to set maxval. For instance, generated tunable_list[] entry for arena_max is: (gdb) p *cur $1 = {name = 0x7ffff7df6217 "glibc.malloc.arena_max", type = {type_code = TUNABLE_TYPE_SIZE_T, min = 1, max = 0}, val = {numval = 0, strval = 0x0}, initialized = false, security_level = TUNABLE_SECLEVEL_SXID_IGNORE, env_alias = 0x7ffff7df622e "MALLOC_ARENA_MAX"} As a result, any value of glibc.malloc.arena_max is ignored by TUNABLE_SET_VAL_IF_VALID_RANGE macro __type min = (__cur)->type.min; <- initialized to 1 __type max = (__cur)->type.max; <- initialized to 0! if (min == max) <- false { min = __default_min; max = __default_max; } if ((__type) (__val) >= min && (__type) (val) <= max) <- false { (__cur)->val.numval = val; (__cur)->initialized = true; } Assigning correct min/max values at a build time fixes a problem. Plus, a bit of optimization: Setting of default min/max values for the given type at a run time might be eliminated. * elf/dl-tunables.c (do_tunable_update_val): Range checking fix. * scripts/gen-tunables.awk: Set unspecified minval and/or maxval values to correct default value for given type.
* Skip PT_DYNAMIC segment with p_filesz == 0 [BZ #22101]H.J. Lu2017-09-263-3/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | ELF objects generated with "objcopy --only-keep-debug" have Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align DYNAMIC 0x0+e28 0x0+200e40 0x0+200e40 0x0+ 0x0+1a0 RW 0x8 with 0 file size. ld.so should skip such PT_DYNAMIC segments. Without a PT_DYNAMIC segment the loading of the shared object will fail, and therefore ldd on such objects will also fail instead of crashing. This provides better diagnostics for tooling that is attempting to inspect the invalid shared objects which may just contain debug information. [BZ #22101] * elf/Makefile (tests): Add tst-debug1. ($(objpfx)tst-debug1): New. ($(objpfx)tst-debug1.out): Likewise. ($(objpfx)tst-debug1mod1.so): Likewise. * elf/dl-load.c (_dl_map_object_from_fd): Skip PT_DYNAMIC segment with p_filesz == 0. * elf/tst-debug1.c: New file. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Fix $(error) use in MakefileSamuel Thibault2017-09-101-2/+2
| | | | * elf/rtld-Rules: Fix $(error) use.
* elf: Remove internal_function attributeFlorian Weimer2017-08-3123-52/+5
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* dlfcn: Remove internal_function attributeFlorian Weimer2017-08-311-2/+0
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* Don't compile non-lib modules as lib modules [BZ #21864]H.J. Lu2017-08-211-0/+1
| | | | | | | | | | | | | Some programs have more than one source files. These non-lib modules should not be compiled with -DMODULE_NAME=libc. This patch puts these non-lib modules in $(others-extras) and adds $(others-extras) to all-nonlib. [BZ #21864] * Makerules (all-nonlib): Add $(others-extras). * catgets/Makefile (others-extras): New. * elf/Makefile (others-extras): Likewise. * nss/Makefile (others-extras): Likewise.
* Mark __libc_multiple_libcs with attribute_hidden [BZ #18822]H.J. Lu2017-08-212-3/+2
| | | | | | | | | | | | | | | Since __libc_multiple_libcs is defined as hidden symbol in init-first.c, it should be always marked with attribute_hidden. [BZ #18822] * csu/libc-start.c (__libc_multiple_libcs): Removed. * elf/dl-open.c: Include <libc-internal.h>. (__libc_multiple_libcs): Removed. * elf/dl-sysdep.c: Include <libc-internal.h> instead of <hp-timing.h>. * include/libc-internal.h (__libc_multiple_libcs): New. * misc/sbrk.c: Include <libc-internal.h>. (__libc_multiple_libcs): Removed.
* Add NT_GNU_PROPERTY_TYPE_0 macrosH.J. Lu2017-08-181-0/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add macros used in GNU .note.gnu.property notes (NT_GNU_PROPERTY_TYPE_0). * elf/elf.h (NT_GNU_PROPERTY_TYPE_0): New. (NOTE_GNU_PROPERTY_SECTION_NAME): Likewise. (GNU_PROPERTY_STACK_SIZE): Likewie. (GNU_PROPERTY_NO_COPY_ON_PROTECTED): Likewie. (GNU_PROPERTY_LOPROC): Likewise. (GNU_PROPERTY_HIPROC): Likewise. (GNU_PROPERTY_LOUSER): Likewise. (GNU_PROPERTY_HIUSER): Likewise. (GNU_PROPERTY_X86_ISA_1_USED): Likwise. (GNU_PROPERTY_X86_ISA_1_NEEDED): Likwise. (GNU_PROPERTY_X86_FEATURE_1_AND): Likwise. (GNU_PROPERTY_X86_ISA_1_486): Likwise. (GNU_PROPERTY_X86_ISA_1_586): Likwise. (GNU_PROPERTY_X86_ISA_1_686): Likwise. (GNU_PROPERTY_X86_ISA_1_SSE): Likwise. (GNU_PROPERTY_X86_ISA_1_SSE2): Likwise. (GNU_PROPERTY_X86_ISA_1_SSE3): Likwise. (GNU_PROPERTY_X86_ISA_1_SSSE3): Likwise. (GNU_PROPERTY_X86_ISA_1_SSE4_1): Likwise. (GNU_PROPERTY_X86_ISA_1_SSE4_2): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX2): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512F): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512CD): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512ER): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512PF): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512VL): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512DQ): Likwise. (GNU_PROPERTY_X86_ISA_1_AVX512BW): Likwise. (GNU_PROPERTY_X86_FEATURE_1_IBT): Likwise. (GNU_PROPERTY_X86_FEATURE_1_SHSTK): Likwise.
* ldd: never run file directlyAndreas Schwab2017-08-161-13/+1
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* powerpc: Add values from Linux 4.8 to <elf.h>Gustavo Romero2017-08-151-0/+16
| | | | | | | | | | | | | | | | | | Add powerpc specific note sections available since Linux v4.8. * elf/elf.h A (NT_PPC_TAR): New macro. (NT_PPC_PPR): Likewise. (NT_PPC_DSCR): Likewise. (NT_PPC_EBB): Likewise. (NT_PPC_PMU): Likewise. (NT_PPC_TM_CGPR): Likewise. (NT_PPC_TM_CFPR): Likewise. (NT_PPC_TM_CVMX): Likewise. (NT_PPC_TM_CVSX): Likewise. (NT_PPC_TM_SPR): Likewise. (NT_PPC_TM_CTAR): Likewise. (NT_PPC_TM_CPPR): Likewise. (NT_PPC_TM_CDSCR): Likewise.
* _dl_init: Remove internal_function attributeFlorian Weimer2017-08-141-1/+0
| | | | | The function is called from the i386 startup code, which needs minor adjustments due to the changed ABI.
* _dl_start: Remove internal_function attributeFlorian Weimer2017-08-141-1/+1
| | | | | The i386 startup code needs adjusting because it calls the function and the ABI has changed.
* _dl_fini: Remove internal_function attributeFlorian Weimer2017-08-141-1/+0
| | | | | | | | | | Assembler code passes the address of _dl_fini to __libc_start_main, whose function pointer argument lacks the attribute. This means that calls could use the wrong ABI. Fortunately, for zero-parameter void-returning functions, internal_function does not change ABI on i386 (the only architecture which uses internal_function), so this inconsistency was harmless (which is why it had not been noticed so far).
* ld.so: Remove internal_function attribute from various functionsFlorian Weimer2017-08-134-9/+0
| | | | | These functions are invoked from other DSOs and should therefore use the standard calling convention.
* NPTL: Remove internal_function from stack marking functionsFlorian Weimer2017-08-131-2/+1
| | | | | These are called across DSO boundaries and therefore should use the ABI calling convention.
* ld.so: Introduce struct dl_exceptionFlorian Weimer2017-08-109-218/+347
| | | | | | This commit separates allocating and raising exceptions. This simplifies catching and re-raising them because it is no longer necessary to make a temporary, on-stack copy of the exception message.
* i386: Add <startup.h> [BZ #21913]H.J. Lu2017-08-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Linux/i386, there are 3 ways to make a system call: 1. call *%gs:SYSINFO_OFFSET. This requires TLS initialization. 2. call *_dl_sysinfo. This requires relocation of _dl_sysinfo. 3. int $0x80. This is slower than #2 and #3, but works everywhere. When an object file is compiled with PIC, #1 is prefered since it is faster than #3 and doesn't require relocation of _dl_sysinfo. For dynamic executables, ld.so initializes TLS. However, for static executables, before TLS is initialized by __libc_setup_tls, #3 should be used for system calls. This patch adds <startup.h> which defines _startup_fatal and defaults it to __libc_fatal. It replaces __libc_fatal with _startup_fatal in static executables where it is called before __libc_setup_tls is called. This header file is included in all files containing functions which are called before __libc_setup_tls is called. On Linux/i386, when PIE is enabled by default, _startup_fatal is turned into ABORT_INSTRUCTION and I386_USE_SYSENTER is defined to 0 so that "int $0x80" is used for system calls before __libc_setup_tls is called. Tested on i686 and x86-64. Without this patch, all statically-linked tests will fail on i686 when the compiler defaults to -fPIE. [BZ #21913] * csu/libc-tls.c: Include <startup.h> first. (__libc_setup_tls): Call _startup_fatal instead of __libc_fatal. * elf/dl-tunables.c: Include <startup.h> first. * include/libc-symbols.h (BUILD_PIE_DEFAULT): New. * sysdeps/generic/startup.h: New file. * sysdeps/unix/sysv/linux/i386/startup.h: Likewise. * sysdeps/unix/sysv/linux/i386/brk.c [BUILD_PIE_DEFAULT != 0] (I386_USE_SYSENTER): New. Defined to 0.
* Fix missing redirects in testsuite targetsAndreas Schwab2017-08-071-1/+1
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* Compile tst-prelink.c without PIE [BZ #21815]H.J. Lu2017-08-041-0/+3
| | | | | | | | | | tst-prelink.c checks for conflict with GLOB_DAT relocation against stdio. On i386, there is no GLOB_DAT relocation against stdio with PIE. We should compile tst-prelink.c without PIE. [BZ #21815] * elf/Makefile (CFLAGS-tst-prelink.c): New. (LDFLAGS-tst-prelink): Likewise.
* Run vismain only if linker supports protected data symbolH.J. Lu2017-08-041-0/+2
| | | | | | | | | | | | | | | | | Gold doesn't support protected data symbol: configure:5672: checking linker support for protected data symbol configure:5682: gcc -fuse-ld=gold -nostdlib -nostartfiles -fno-stack-protector -fPIC -shared conftest.c -o conftest.so configure:5685: $? = 0 configure:5692: gcc -fuse-ld=gold -nostdlib -nostartfiles -fno-stack-protector conftest.c -o conftest conftest.so /usr/local/bin/ld.gold: error: /tmp/ccXWoofs.o: cannot make copy relocation for protected symbol 'bar', defined in conftest.so collect2: error: ld returned 1 exit status Run vismain only if linker supports protected data symbol. * elf/Makefile (tests): Add vismain only if $(have-protected-data) == yes. (tests-pie): Likewise.
* tunables: Use direct syscall for access (BZ#21744)Adhemerval Zanella2017-07-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | The function maybe_enable_malloc_check, which is called by __tunables_init, calls __access_noerrno. It isn't problem when symbol is is in ld.so, which has a special version of __access_noerrno without stack protector. But when glibc is built with stack protector, maybe_enable_malloc_check in libc.a can't call the regular version of __access_noerrno with stack protector. This patch changes how Linux defines the __access_noerrno to be an inline call instead and thus preventing defining different build rules for ld/static and shared. H.J. Lu <hongjiu.lu@intel.com> Adhemerval Zanella <adhemerval.zanella@linaro.org> [BZ #21744] * elf/dl-tunables.c: Include not-errno.h header. * include/unistd.h (__access_noerrno): Remove definition. * sysdeps/unix/sysv/linux/access.c (__access_noerrno): Likewise. * sysdeps/generic/not-errno.h: New file. * sysdeps/unix/sysv/linux/not-errno.h: Likewise.
* powerpc: Fix float128 IFUNC relocations [BZ #21707]Tulio Magno Quites Machado Filho2017-07-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch proposed by Peter Bergner [1] to libgcc in order to fix [BZ #21707] adds a dependency on a symbol provided by the loader, forcing the loader to be linked to tests after libgcc was linked. It also requires to read the thread pointer during IRELA relocations. Tested on powerpc, powerpc64, powerpc64le, s390x and x86_64. [1] https://sourceware.org/ml/libc-alpha/2017-06/msg01383.html [BZ #21707] * csu/libc-start.c (LIBC_START_MAIN): Perform IREL{,A} relocations before or after initializing the TCB on statically linked executables. That's a per-architecture definition. * elf/rtld.c (dl_main): Add a comment about thread-local variables initialization. * sysdeps/generic/libc-start.h: New file. Define ARCH_APPLY_IREL and ARCH_SETUP_IREL. * sysdeps/powerpc/Makefile: [$(subdir) = elf && $(multi-arch) != no] (tests-static-internal): Add tst-tlsifunc-static. [$(subdir) = elf && $(multi-arch) != no && $(build-shared) == yes] (tests-internal): Add tst-tlsifunc. * sysdeps/powerpc/tst-tlsifunc.c: New file. * sysdeps/powerpc/tst-tlsifunc-static.c: Likewise. * sysdeps/powerpc/powerpc64le/Makefile (f128-loader-link): New variable. [$(subdir) = math] (test-float128% test-ifloat128%): Force linking to the loader after linking to libgcc. [$(subdir) = wcsmbs || $(subdir) = stdlib] (bug-strtod bug-strtod2) (bug-strtod2 tst-strtod-round tst-wcstod-round tst-strtod6 tst-strrom) (tst-strfrom-locale strfrom-skeleton): Likewise. * sysdeps/unix/sysv/linux/powerpc/libc-start.h: New file. Define ARCH_APPLY_IREL and ARCH_SETUP_IREL.
* Don't include _dl_resolve_conflicts in libc.a [BZ #21742]H.J. Lu2017-07-101-2/+2
| | | | | | | | | Since _dl_resolve_conflicts is only used in elf/rtld.c, don't include it in libc.a. [BZ #21742] * elf/Makefile (dl-routines): Move dl-conflict to ... (rtld-routines): Here.
* Add per-thread cache to mallocDJ Delorie2017-07-061-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * config.make.in: Enable experimental malloc option. * configure.ac: Likewise. * configure: Regenerate. * manual/install.texi: Document it. * INSTALL: Regenerate. * malloc/Makefile: Likewise. * malloc/malloc.c: Add per-thread cache (tcache). (tcache_put): New. (tcache_get): New. (tcache_thread_freeres): New. (tcache_init): New. (__libc_malloc): Use cached chunks if available. (__libc_free): Initialize tcache if needed. (__libc_realloc): Likewise. (__libc_calloc): Likewise. (_int_malloc): Prefill tcache when appropriate. (_int_free): Likewise. (do_set_tcache_max): New. (do_set_tcache_count): New. (do_set_tcache_unsorted_limit): New. * manual/probes.texi: Document new probes. * malloc/arena.c: Add new tcache tunables. * elf/dl-tunables.list: Likewise. * manual/tunables.texi: Document them. * NEWS: Mention the per-thread cache.
* tunables, aarch64: New tunable to override cpuSiddhesh Poyarekar2017-06-302-20/+21
| | | | | | | | | | | | | | | | | | | | Add a new tunable (glibc.tune.cpu) to override CPU identification on aarch64. This is useful in two cases: one where it is desirable to pretend to be another CPU for purposes of testing or because routines written for that CPU are beneficial for specific workloads and second where the underlying kernel does not support emulation of MRS to get the MIDR of the CPU. * elf/dl-tunables.h (tunable_is_name): Move from... * elf/dl-tunables.c (is_name): ... here. (parse_tunables, __tunables_init): Adjust. * manual/tunables.texi: Document glibc.tune.cpu. * sysdeps/aarch64/dl-tunables.list: New file. * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (struct cpu_list): New type. (cpu_list): New list of CPU names and their MIDR. (get_midr_from_mcpu): New function. (init_cpu_features): Override MIDR if necessary.
* Fix elf/loadtest.c build with GCC 8.Joseph Myers2017-06-271-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | Building the testsuite with current GCC mainline fails with: loadtest.c: In function 'main': loadtest.c:76:3: error: macro expands to multiple statements [-Werror=multistatement-macros] for (map = MAPS; map != NULL; map = map->l_next) \ ^ loadtest.c:165:2: note: in expansion of macro 'OUT' OUT; ^~~ loadtest.c:164:7: note: some parts of macro expansion are not guarded by this 'if' clause if (debug) ^~ This seems like a genuine bug, although fairly harmless; it means the fflush call in the OUT macro is unconditional instead of being inside the conditional as presumably intended. This patch makes this macro use do { } while (0) to avoid the problem. Tested for x86_64 (testsuite), and with build-many-glibcs.py for aarch64-linux-gnu with GCC mainline. * elf/loadtest.c (OUT): Define using do { } while (0).
* x86: Rename glibc.tune.ifunc to glibc.tune.hwcapsH.J. Lu2017-06-211-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | Rename glibc.tune.ifunc to glibc.tune.hwcaps and move it to sysdeps/x86/dl-tunables.list since it is x86 specicifc. Also change type of data_cache_size, data_cache_size and non_temporal_threshold to unsigned long int to match size_t. Remove usage DEFAULT_STRLEN from cpu-tunables.c. * elf/dl-tunables.list (glibc.tune.ifunc): Removed. * sysdeps/x86/dl-tunables.list (glibc.tune.hwcaps): New. Remove security_level on all fields. * manual/tunables.texi: Replace ifunc with hwcaps. * sysdeps/x86/cpu-features.c (TUNABLE_CALLBACK (set_ifunc)): Renamed to .. (TUNABLE_CALLBACK (set_hwcaps)): This. (init_cpu_features): Updated. * sysdeps/x86/cpu-features.h (cpu_features): Change type of data_cache_size, data_cache_size and non_temporal_threshold to unsigned long int. * sysdeps/x86/cpu-tunables.c (DEFAULT_STRLEN): Removed. (TUNABLE_CALLBACK (set_ifunc)): Renamed to ... (TUNABLE_CALLBACK (set_hwcaps)): This. Update comments. Don't use DEFAULT_STRLEN.
* Move x86 specific tunables to x86/dl-tunables.listH.J. Lu2017-06-201-12/+0
| | | | | * elf/dl-tunables.list: Move x86 specific tunables to ... * sysdeps/x86/dl-tunables.list: Here. New file.
* tunables: Add IFUNC selection and cache sizesH.J. Lu2017-06-201-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current IFUNC selection is based on microbenchmarks in glibc. It should give the best performance for most workloads. But other choices may have better performance for a particular workload or on the hardware which wasn't available at the selection was made. The environment variable, GLIBC_TUNABLES=glibc.tune.ifunc=-xxx,yyy,-zzz...., can be used to enable CPU/ARCH feature yyy, disable CPU/ARCH feature yyy and zzz, where the feature name is case-sensitive and has to match the ones in cpu-features.h. It can be used by glibc developers to override the IFUNC selection to tune for a new processor or improve performance for a particular workload. It isn't intended for normal end users. NOTE: the IFUNC selection may change over time. Please check all multiarch implementations when experimenting. Also, GLIBC_TUNABLES=glibc.tune.x86_non_temporal_threshold=NUMBER is provided to set threshold to use non temporal store to NUMBER, GLIBC_TUNABLES=glibc.tune.x86_data_cache_size=NUMBER to set data cache size, GLIBC_TUNABLES=glibc.tune.x86_shared_cache_size=NUMBER to set shared cache size. * elf/dl-tunables.list (tune): Add ifunc, x86_non_temporal_threshold, x86_data_cache_size and x86_shared_cache_size. * manual/tunables.texi: Document glibc.tune.ifunc, glibc.tune.x86_data_cache_size, glibc.tune.x86_shared_cache_size and glibc.tune.x86_non_temporal_threshold. * sysdeps/unix/sysv/linux/x86/dl-sysdep.c: New file. * sysdeps/x86/cpu-tunables.c: Likewise. * sysdeps/x86/cacheinfo.c (init_cacheinfo): Check and get data cache size, shared cache size and non temporal threshold from cpu_features. * sysdeps/x86/cpu-features.c [HAVE_TUNABLES] (TUNABLE_NAMESPACE): New. [HAVE_TUNABLES] Include <unistd.h>. [HAVE_TUNABLES] Include <elf/dl-tunables.h>. [HAVE_TUNABLES] (TUNABLE_CALLBACK (set_ifunc)): Likewise. [HAVE_TUNABLES] (init_cpu_features): Use TUNABLE_GET to set IFUNC selection, data cache size, shared cache size and non temporal threshold. * sysdeps/x86/cpu-features.h (cpu_features): Add data_cache_size, shared_cache_size and non_temporal_threshold.
* ld.so: Reject overly long LD_AUDIT path elementsFlorian Weimer2017-06-191-15/+95
| | | | Also only process the last LD_AUDIT entry.
* ld.so: Reject overly long LD_PRELOAD path elementsFlorian Weimer2017-06-191-16/+66
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* CVE-2017-1000366: Ignore LD_LIBRARY_PATH for AT_SECURE=1 programs [BZ #21624]Florian Weimer2017-06-191-1/+2
| | | | | | | | LD_LIBRARY_PATH can only be used to reorder system search paths, which is not useful functionality. This makes an exploitable unbounded alloca in _dl_init_paths unreachable for AT_SECURE=1 programs.
* Remove _dl_out_of_memory from elf/VersionsH.J. Lu2017-06-161-1/+1
| | | | | | | | | | Since _dl_out_of_memory is static in elf/dl-error-skeleton.c: static const char _dl_out_of_memory[] = "out of memory"; remove _dl_out_of_memory from elf/Versions. * elf/Versions (ld): Remove _dl_out_of_memory.
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