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2016-02-18Update version.h and include/features.h for 2.23 releaseglibc-2.23Adhemerval Zanella
2016-02-18Add _STRING_INLINE_unaligned and string_private.hH.J. Lu
As discussed in https://sourceware.org/ml/libc-alpha/2015-10/msg00403.html the setting of _STRING_ARCH_unaligned currently controls the external GLIBC ABI as well as selecting the use of unaligned accesses withing GLIBC. Since _STRING_ARCH_unaligned was recently changed for AArch64, this would potentially break the ABI in GLIBC 2.23, so split the uses and add _STRING_INLINE_unaligned to select the string ABI. This setting must be fixed for each target, while _STRING_ARCH_unaligned may be changed from release to release. _STRING_ARCH_unaligned is used unconditionally in glibc. But <bits/string.h>, which defines _STRING_ARCH_unaligned, isn't included with -Os. Since _STRING_ARCH_unaligned is internal to glibc and may change between glibc releases, it should be made private to glibc. _STRING_ARCH_unaligned should defined in the new string_private.h heade file which is included unconditionally from internal <string.h> for glibc build. [BZ #19462] * bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * include/string.h: Include <string_private.h>. * string/bits/string2.h: Replace _STRING_ARCH_unaligned with _STRING_INLINE_unaligned. * sysdeps/aarch64/bits/string.h (_STRING_ARCH_unaligned): Removed. (_STRING_INLINE_unaligned): New. * sysdeps/aarch64/string_private.h: New file. * sysdeps/generic/string_private.h: Likewise. * sysdeps/m68k/m680x0/m68020/string_private.h: Likewise. * sysdeps/s390/string_private.h: Likewise. * sysdeps/x86/string_private.h: Likewise. * sysdeps/m68k/m680x0/m68020/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * sysdeps/s390/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * sysdeps/sparc/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * sysdeps/x86/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This.
2016-01-06Mark internal unistd functions hidden in ld.soH.J. Lu
Since internal unistd functions are only used internally in ld.so and libc.so, they can be made hidden. __close, __getcwd, __getpid, __libc_read and __libc_write can't be hidden in ld.so on Hurd since they will be preempted by the ones in libc.so after bootstrap. [BZ #19122] * include/unistd.h [IS_IN (rtld)]: Include <dl-unistd.h>. * sysdeps/generic/dl-unistd.h: New file. * sysdeps/mach/hurd/dl-unistd.h: Likewise.
2016-01-06Mark ld.so internal mmap functions hidden in ld.soH.J. Lu
Since ld.so internal mmap functions are only used internally in ld.so, they can be made hidden. Don't hide __mmap on Hurd, since __mmap in ld.so will be preempted by the one in libc.so after bootstrap. [BZ #19122] * include/sys/mman.h [IS_IN (rtld)]: Include <dl-mman.h>. * sysdeps/generic/dl-mman.h: New file. * sysdeps/mach/hurd/dl-mman.h: Likewise.
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers
2015-12-10Update to Unicode 8.0.0.Mike FABIAN
Update __STDC_ISO_10646__ to 201505L for Unicode 8.0.0. Update character encoding, ctype, and transliteration tables. New scripts autogenerate transliteration tables.
2015-11-24Refactor strtod parsing of NaN payloads.Joseph Myers
The nan* functions handle their string argument by constructing a NAN(...) string on the stack as a VLA and passing it to strtod functions. This approach has problems discussed in bug 16961 and bug 16962: the stack usage is unbounded, and it gives incorrect results in certain cases where the argument is not a valid n-char-sequence. The natural fix for both issues is to refactor the NaN payload parsing out of strtod into a separate function that the nan* functions can call directly, so that no temporary string needs constructing on the stack at all. This patch does that refactoring in preparation for fixing those bugs (but without actually using the new functions from nan* - which will also require exporting them from libc at version GLIBC_PRIVATE). This patch is not intended to change any user-visible behavior, so no tests are added (fixes for the above bugs will of course add tests for them). This patch builds on my recent fixes for strtol and strtod issues in Turkish locales. Given those fixes, the parsing of NaN payloads is locale-independent; thus, the new functions do not need to take a locale_t argument. Tested for x86_64, x86, mips64 and powerpc. * stdlib/strtod_nan.c: New file. * stdlib/strtod_nan_double.h: Likewise. * stdlib/strtod_nan_float.h: Likewise. * stdlib/strtod_nan_main.c: Likewise. * stdlib/strtod_nan_narrow.h: Likewise. * stdlib/strtod_nan_wide.h: Likewise. * stdlib/strtof_nan.c: Likewise. * stdlib/strtold_nan.c: Likewise. * sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise. * sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise. * sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise. * wcsmbs/wcstod_nan.c: Likewise. * wcsmbs/wcstof_nan.c: Likewise. * wcsmbs/wcstold_nan.c: Likewise. * stdlib/Makefile (routines): Add strtof_nan, strtod_nan and strtold_nan. * wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and wcstof_nan. * include/stdlib.h (__strtof_nan): Declare and use libc_hidden_proto. (__strtod_nan): Likewise. (__strtold_nan): Likewise. (__wcstof_nan): Likewise. (__wcstod_nan): Likewise. (__wcstold_nan): Likewise. * include/wchar.h (____wcstoull_l_internal): Declare. * stdlib/strtod_l.c: Do not include <ieee754.h>. (____strtoull_l_internal): Remove declaration. (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. (STRTOULL): Likewise. (____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload. * stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration. (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration. * wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise. * wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
2015-11-20Fix lgamma setting signgam for ISO C (bug 15421).Joseph Myers
The lgamma (and likewise lgammaf, lgammal) function wrongly sets the signgam variable even when building for strict ISO C conformance (-std=c99 / -std=c11), although the user may define such a variable and it's only in the implementation namespace for POSIX with XSI extensions enabled. Following discussions starting at <https://sourceware.org/ml/libc-alpha/2013-04/msg00767.html> and <https://sourceware.org/ml/libc-alpha/2015-10/msg00844.html>, it seems that the safest approach for fixing this particular issue is for signgam to become a weak alias for a newly exported symbol __signgam, with the library functions only setting __signgam, at which point static linker magic will preserve the alias for newly linked binaries that refer to the library's signgam rather than defining their own, while breaking the alias for programs that define their own signgam, with new symbol versions for lgamma functions and with compat symbols for existing binaries that set both signgam and __signgam. This patch implements that approach for the fix. signgam is made into a weak alias. The four symbols __signgam, lgamma, lgammaf, lgammal get new symbol versions at version GLIBC_2.23, with the existing versions of lgamma, lgammaf and lgammal becoming compat symbols. When the compat versions are built, gamma, gammaf and gammal are aliases for the compat versions (i.e. always set signgam); this is OK as they are not ISO C functions, and avoids adding new symbol versions for them unnecessarily. When the compat versions are not built (i.e. for static linking and for future glibc ports), gamma, gammaf and gammal are aliases for the new versions that set __signgam. The ldbl-opt versions are updated accordingly. The lgamma wrappers are adjusted so that the same source files, included from different files with different definitions of USE_AS_COMPAT, can build either the new versions or the compat versions. Similar changes are made to the ia64 versions (untested). Tests are added that the lgamma functions do not interfere with a user variable called signgam for ISO C, with various choices for the size of that variable, whether it is initialized, and for static and dynamic linking. The conformtest whitelist entry is removed as well. Tested for x86_64, x86, mips64 and powerpc, including looking at objdump --dynamic-syms output to make sure the expected sets of symbols were aliases. Also spot-tested that a binary built with old glibc works properly (i.e. gets signgam set) when run with new glibc. [BZ #15421] * sysdeps/ieee754/s_signgam.c (signgam): Rename to __signgam, initialize with 0 and define as weak alias of __signgam. * include/math.h [!_ISOMAC] (__signgam): Declare. * math/Makefile (libm-calls): Add w_lgamma_compat. (tests): Add test-signgam-uchar, test-signgam-uchar-init, test-signgam-uint, test-signgam-uint-init, test-signgam-ullong and test-signgam-ullong-init. (tests-static): Add test-signgam-uchar-static, test-signgam-uchar-init-static, test-signgam-uint-static, test-signgam-uint-init-static, test-signgam-ullong-static and test-signgam-ullong-init-static. (CFLAGS-test-signgam-uchar.c): New variable. (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. * math/Versions (libm): Add GLIBC_2.23. * math/lgamma-compat.h: New file. * math/test-signgam-main.c: Likewise. * math/test-signgam-uchar-init-static.c: Likewise. * math/test-signgam-uchar-init.c: Likewise. * math/test-signgam-uchar-static.c: Likewise. * math/test-signgam-uchar.c: Likewise. * math/test-signgam-uint-init-static.c: Likewise. * math/test-signgam-uint-init.c: Likewise. * math/test-signgam-uint-static.c: Likewise. * math/test-signgam-uint.c: Likewise. * math/test-signgam-ullong-init-static.c: Likewise. * math/test-signgam-ullong-init.c: Likewise. * math/test-signgam-ullong-static.c: Likewise. * math/test-signgam-ullong.c: Likewise. * math/w_lgamma.c: Rename to w_lgamma_main.c and replace by wrapper of w_lgamma_main.c. * math/w_lgamma_compat.c: New file. * math/w_lgamma_compatf.c: Likewise. * math/w_lgamma_compatl.c: Likewise. * math/w_lgamma_main.c: New file. Based on w_lgamma.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgamma): Change to LGFUNC (__lgamma). Use CALL_LGAMMA. * math/w_lgammaf.c: Rename to w_lgammaf_main.c and replace by wrapper of w_lgammaf_main.c. * math/w_lgammaf_main.c: New file. Based on w_lgammaf.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgammaf): Change to LGFUNC (__lgammaf). Use CALL_LGAMMA. * math/w_lgammal.c: Rename to w_lgammal_main.c and replace by wrapper of w_lgammal_main.c. * math/w_lgammal_main.c: New file. Based on w_lgammal.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgammal): Change to LGFUNC (__lgammal). Use CALL_LGAMMA. * sysdeps/ia64/fpu/lgamma-compat.h: New file. * sysdeps/ia64/fpu/w_lgamma.c: Move to .... * sysdeps/ia64/fpu/w_lgamma_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgamma): Change to LGFUNC (lgamma). Use CALL_LGAMMA. (__ieee754_gamma): Define as alias. * sysdeps/ia64/fpu/w_lgammaf.c: Move to .... * sysdeps/ia64/fpu/w_lgammaf_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgammaf): Change to LGFUNC (lgammaf). Use CALL_LGAMMA. (__ieee754_gammaf): Define as alias. * sysdeps/ia64/fpu/w_lgammal.c: Move to .... * sysdeps/ia64/fpu/w_lgammal_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgammal): Change to LGFUNC (lgammal). Use CALL_LGAMMA. (__ieee754_gammal): Define as alias. * sysdeps/ieee754/ldbl-opt/w_lgamma.c: Move to .... * sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c: ...here. Include <math/w_lgamma_compat.c>. [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__lgammal_dbl_compat): Define as alias of __lgamma_compat and use in defining lgammal. * sysdeps/ieee754/ldbl-opt/w_lgammal.c: Move to .... * sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c: ...here. Include <math/lgamma-compat.h> and <math/w_lgamma_compatl.c>. (USE_AS_COMPAT): New macro. (LGAMMA_OLD_VER): Undefine and redefine. (lgammal): Do not define here. (gammal): Only define here if [GAMMA_ALIAS]. * conform/linknamespace.pl (@whitelist): Remove signgam. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2015-11-05Fix features.h for -Wundef (bug 19212).Joseph Myers
features.h is not clean with -Wundef (for the installed header, of course this only appears with -Wsystem-headers). In ISO C standards modes, you get a series of warnings / errors relating to _POSIX_C_SOURCE and _XOPEN_SOURCE not being defined when tested in standards mode and uses #undef _GNU_SOURCE to avoid the default _GNU_SOURCE from libc-symbols.h. This patch changes the relevant #if conditionals to avoid these warnings / errors. Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). [BZ #19212] * include/features.h [(_XOPEN_SOURCE - 0) >= 500]: Change conditional to [defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500]. [_POSIX_C_SOURCE >= 1]: Change conditional to [defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1]. [(_POSIX_C_SOURCE - 0) >= 199309L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L]. [(_POSIX_C_SOURCE - 0) >= 199506L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L]. [(_POSIX_C_SOURCE - 0) >= 200112L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L]. [(_POSIX_C_SOURCE - 0) >= 200809L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L].
2015-10-29Use max_align_t from <stddef.h>.Joseph Myers
Now that we build with -std=gnu11 and can rely on a compiler providing max_align_t in <stddef.h>, we no longer need our own version libc_max_align_t. This patch removes it and replaces the single user with a use of max_align_t. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch for x86_64; for x86, I see some code reordering of no significance). * include/libc-internal.h (libc_max_align_t): Remove typedef. * include/scratch_buffer.h: Include <stddef.h> instead of <libc-internal.h>. (struct scratch_buffer): Use max_align_t instead of libc_max_align_t.
2015-10-19Mark ld.so internel __fxstatat64 hiddenH.J. Lu
Since ld.so internel __fxstatat64 is only used internally in ld.so, it can be made hidden. [BZ #19122] * include/sys/stat.h [IS_IN (rtld)] (__fxstatat64): Add attribute_hidden.
2015-10-19Remove .weak, .weakext configure tests.Joseph Myers
There are configure tests for assembler .weak support, and, as a fallback, for .weakext support. .weakext appears to be an ECOFF thing (although a few ELF targets support it as well). .weak has been supported by the GNU assembler for ELF targets since version 2.2, so given the requirement for ELF the configure tests are obsolete; this patch removes them. Tested for x86_64 (testsuite, and that installed shared libraries are unchanged by the patch). * configure.ac (libc_cv_asm_weak_directive): Remove configure test. (libc_cv_asm_weakext_directive): Likewise. * configure: Regenerated. * config.h.in (HAVE_ASM_WEAK_DIRECTIVE): Remove #undef. (HAVE_ASM_WEAKEXT_DIRECTIVE): Likewise. * include/libc-symbols.h [!HAVE_ASM_WEAK_DIRECTIVE && !HAVE_ASM_WEAKEXT_DIRECTIVE]: Remove #error. [HAVE_ASM_WEAKEXT_DIRECTIVE]: Remove conditional code. [!HAVE_ASM_WEAKEXT_DIRECTIVE]: Make code unconditional.
2015-10-17Assume that SOCK_CLOEXEC is available and worksFlorian Weimer
This fixes (harmless) data races when accessing the various __have_sock_cloexec variables.
2015-10-15Mark ld.so internel __uname hiddenH.J. Lu
Since ld.so internel __uname is only used internally in ld.so, it can be made hidden. [BZ #19122] * include/sys/utsname.h [IS_IN (rtld)] (__uname): Add attribute_hidden.
2015-10-15Mark ld.so internel string functions hiddenH.J. Lu
Since ld.so internel string functions are only used internally in ld.so, they can be made hidden. [BZ #19122] * include/string.h [IS_IN (rtld)] (__stpcpy): Add attribute_hidden. [IS_IN (rtld)] (__strdup): Likewise. [IS_IN (rtld)] (__strerror_r): Likewise. [IS_IN (rtld)] (__strsep_g): Likewise. [IS_IN (rtld)] (memchr): Likewise. [IS_IN (rtld)] (memcmp): Likewise. [IS_IN (rtld)] (memcpy): Likewise. [IS_IN (rtld)] (memmove): Likewise. [IS_IN (rtld)] (memset): Likewise. [IS_IN (rtld)] (rawmemchr): Likewise. [IS_IN (rtld)] (stpcpy): Likewise. [IS_IN (rtld)] (strchr): Likewise. [IS_IN (rtld)] (strcmp): Likewise. [IS_IN (rtld)] (strlen): Likewise. [IS_IN (rtld)] (strnlen): Likewise. [IS_IN (rtld)] (strsep): Likewise.
2015-10-15Mark ld.so internel stdlib functions hiddenH.J. Lu
Since ld.so internel stdlib functions are only used internally in ld.so, they can be made hidden. [BZ #19122] * include/stdlib.h [IS_IN (rtld)] (unsetenv): Add attribute_hidden. [IS_IN (rtld)] (__strtoul_internal): Likewise.
2015-10-15Mark ld.so internel sigaction functions hiddenH.J. Lu
Since ld.so internel sigaction functions are only used internally in ld.so, they can be made hidden. [BZ #19122] * include/signal.h [IS_IN (rtld)] (__sigaction): Add attribute_hidden. [IS_IN (rtld)] (__libc_sigaction): Likewise.
2015-10-15Mark internal setjmp functions hiddenH.J. Lu
Since internal dirent functions are only used internally in ld.so and libc.so, they can be made hidden. [BZ #19122] * include/setjmp.h (__longjmp): Add attribute_hidden. [IS_IN (rtld)] (__sigsetjmp): Likewise.
2015-10-15Mark ld.so internel __profile_frequency hiddenH.J. Lu
Since ld.so internel __profile_frequency is only used internally in ld.so, it can be made hidden. [BZ #19122] * include/libc-internal.h [IS_IN (rtld)] (__profile_frequency): Add attribute_hidden.
2015-10-15Mark internal fcntl functions hiddenH.J. Lu
Since internal fcntl functions are only used internally in ld.so and libc.so, they can be made hidden. [BZ #19122] * include/fcntl.h (__libc_fcntl): Add attribute_hidden. [IS_IN (rtld)] (__open): Likewise. [IS_IN (rtld)] (__fcntl): Likewise.
2015-10-15Mark internal dirent functions hiddenH.J. Lu
Since internal dirent functions are only used internally in ld.so and libc.so, they can be made hidden. [BZ #19122] * include/dirent.h (__opendirat): Add attribute_hidden. (__getdents): Likewise. (__getdents64): Likewise. (__alloc_dir): Likewise. [IS_IN (rtld)] (__closedir): Likewise. [IS_IN (rtld)] (__fdopendir): Likewise. [IS_IN (rtld)] (__readdir): Likewise. [IS_IN (rtld)] (__readdir64): Likewise. [IS_IN (rtld)] (__rewinddir): Likewise.
2015-10-15Mark _dl_catch_error hiddenH.J. Lu
Since _dl_catch_error is only used internally in ld.so, it should be declared in sysdeps/generic/ldsodefs.h, not include/dlfcn.h and it can be made hidden. [BZ #19122] * include/dlfcn.h (_dl_catch_error): Moved to ... * sysdeps/generic/ldsodefs.h (_dl_catch_error): Add attribute_hidden.
2015-10-15Remove .previous, .popsection configure tests.Joseph Myers
There is a configure test for the assembler .previous directive, and, as a fallback, for .popsection. glibc now only supports ELF. For ELF, the GNU assembler has supported .previous since version 2.2 (support added by Mon Jul 19 15:21:20 1993 Ken Raeburn (raeburn@rtl.cygnus.com) * config/obj-elf.c (obj_elf_previous): New function. (previous_section, previous_subsection): New vars. (obj_elf_section): Save current place in case DWARF code wants us to pop back to it. Handle unquoted section name as well as quoted section name. Don't crash on invalid strings. (obj_pseudo_table): Handle new pseudos "previous", "2byte", and "4byte". ). Thus this configure test is obsolete, and this patch removes it (and with it the fallback .popsection test). Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). * configure.ac (libc_cv_asm_previous_directive): Remove configure test. (libc_cv_asm_popsection_directive): Likewise. * configure: Regenerated. * config.h.in (HAVE_ASM_PREVIOUS_DIRECTIVE): Remove #undef. (HAVE_ASM_POPSECTION_DIRECTIVE): Likewise. * include/libc-symbols.h [HAVE_ASM_PREVIOUS_DIRECTIVE] (__make_section_unallocated): Make definition unconditional. [HAVE_ASM_POPSECTION_DIRECTIVE] (__make_section_unallocated): Remove conditional definition. [!HAVE_ASM_PREVIOUS_DIRECTIVE && !HAVE_ASM_POPSECTION_DIRECTIVE] (__make_section_unallocated): Likewise.
2015-10-14include/stap-probe.h: Fix formatting.Carlos O'Donell
Fix macro indentation.
2015-10-02Harden putpwent, putgrent, putspent, putspent against injection [BZ #18724]Florian Weimer
This prevents injection of ':' and '\n' into output functions which use the NSS files database syntax. Critical fields (user/group names and file system paths) are checked strictly. For backwards compatibility, the GECOS field is rewritten instead. The getent program is adjusted to use the put*ent functions in libc, instead of local copies. This changes the behavior of getent if user names start with '-' or '+'.
2015-09-18Since we now inline isinf, isnan and isfinite in math.h, replace uses of ↵Wilco Dijkstra
__isinf_ns(l/f) with isinf, and remove the unused inlines __isinf_ns(l/f), __isnan(f) and __finite(f). 2015-09-18 Wilco Dijkstra <wdijkstr@arm.com> * include/math.h: Remove __isinf_ns, __isinf_nsf, __isinf_nsl. * math/Makefile: Remove isinf_ns.c. * math/divtc3.c (__divtc3): Replace __isinf_nsl with isinf. * math/multc3.c (__multc3): Likewise. * math/s_casin.c (__casin): Likewise. * math/s_casinf.c (__casinf): Likewise. * math/s_casinl.c (__casinl): Likewise. * math/s_cproj.c (__cproj): Likewise. * math/s_cprojf.c (__cprojf): Likewise. * math/s_cprojl.c (__cprofl): Likewise. * math/s_ctan.c (__ctan): Likewise. * math/s_ctanf.c (__ctanf): Likewise. * math/s_ctanh.c (__ctanh): Likewise. * math/s_ctanhf.c (__ctanhf): Likewise. * math/s_ctanhl.c (__ctanhl): Likewise. * math/s_ctanl.c (__ctanl): Likewise. * math/w_fmod.c (__fmod): Likewise. * math/w_fmodf.c (__fmodf): Likewise. * math/w_fmodl.c (_fmodl): Likewise. * math/w_remainder.c (__remainder): Likewise. * math/w_remainderf.c (__remainderf): Likewise. * math/w_remainderl.c (__remainderl): Likewise. * math/w_scalb.c (__scalb): Likewise. * math/w_scalbf.c (__scalbf): Likewise. * math/w_scalbl.c (__scalbl): Likewise. * sysdeps/ieee754/dbl-64/s_isinf_ns.c: Deleted file. * sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Replace __isinf_ns with isinf. * sysdeps/ieee754/dbl-64/wordsize-64/math_private.h: Deleted file. * sysdeps/ieee754/dbl-64/wordsize-64/s_isinf_ns.c: Deleted file. * sysdeps/ieee754/flt-32/e_exp2f.c (__ieee754_exp2f): Replace __isinf_nsf with isinf. * sysdeps/ieee754/flt-32/math_private.h: Deleted file. * sysdeps/ieee754/flt-32/s_isinf_nsf.c: Deleted file. * sysdeps/ieee754/ldbl-128/s_isinf_nsl.c: Deleted file. * sysdeps/ieee754/ldbl-128/s_sincosl.c (__sincosl): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-128ibm/s_cprojl.c(__cprojll): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-128ibm/s_ctanl.c(__ctanl): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c: Deleted file. * sysdeps/ieee754/ldbl-128ibm/s_sincosl.c (__sincosl): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-96/s_isinf_nsl.c: Deleted file. * sysdeps/ieee754/ldbl-96/s_sincosl.c (__sincosl): Replace __isinf_nsl with isinf.
2015-09-15Mark fegetround pure (bug 16296).Joseph Myers
Bug 16296 notes that fegetround is a pure function and should be marked as such in fenv.h. This patch implements that. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by this patch). [BZ #16296] * math/fenv.h (fegetround): Use __attribute_pure__. * include/fenv.h (__fegetround): Likewise.
2015-09-11Move bits/atomic.h to atomic-machine.h (bug 14912).Joseph Myers
It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/atomic.h to atomic-machine.h to follow that convention. This is the only change in this series that needs to change the filename rather than simply removing a directory level (because both atomic.h and bits/atomic.h exist at present). Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * sysdeps/aarch64/bits/atomic.h: Move to ... * sysdeps/aarch64/atomic-machine.h: ...here. (_AARCH64_BITS_ATOMIC_H): Rename macro to _AARCH64_ATOMIC_MACHINE_H. * sysdeps/alpha/bits/atomic.h: Move to ... * sysdeps/alpha/atomic-machine.h: ...here. * sysdeps/arm/bits/atomic.h: Move to ... * sysdeps/arm/atomic-machine.h: ...here. Update comments. * bits/atomic.h: Move to ... * sysdeps/generic/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/i386/bits/atomic.h: Move to ... * sysdeps/i386/atomic-machine.h: ...here. * sysdeps/ia64/bits/atomic.h: Move to ... * sysdeps/ia64/atomic-machine.h: ...here. * sysdeps/m68k/coldfire/bits/atomic.h: Move to ... * sysdeps/m68k/coldfire/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/m68k/m680x0/m68020/bits/atomic.h: Move to ... * sysdeps/m68k/m680x0/m68020/atomic-machine.h: ...here. * sysdeps/microblaze/bits/atomic.h: Move to ... * sysdeps/microblaze/atomic-machine.h: ...here. * sysdeps/mips/bits/atomic.h: Move to ... * sysdeps/mips/atomic-machine.h: ...here. (_MIPS_BITS_ATOMIC_H): Rename macro to _MIPS_ATOMIC_MACHINE_H. * sysdeps/powerpc/bits/atomic.h: Move to ... * sysdeps/powerpc/atomic-machine.h: ...here. Update comments. * sysdeps/powerpc/powerpc32/bits/atomic.h: Move to ... * sysdeps/powerpc/powerpc32/atomic-machine.h: ...here. Update comments. Include <atomic-machine.h> instead of <bits/atomic.h>. * sysdeps/powerpc/powerpc64/bits/atomic.h: Move to ... * sysdeps/powerpc/powerpc64/atomic-machine.h: ...here. Include <atomic-machine.h> instead of <bits/atomic.h>. * sysdeps/s390/bits/atomic.h: Move to ... * sysdeps/s390/atomic-machine.h: ...here. * sysdeps/sparc/sparc32/bits/atomic.h: Move to ... * sysdeps/sparc/sparc32/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Move to ... * sysdeps/sparc/sparc32/sparcv9/atomic-machine.h: ...here. * sysdeps/sparc/sparc64/bits/atomic.h: Move to ... * sysdeps/sparc/sparc64/atomic-machine.h: ...here. * sysdeps/tile/bits/atomic.h: Move to ... * sysdeps/tile/atomic-machine.h: ...here. * sysdeps/tile/tilegx/bits/atomic.h: Move to ... * sysdeps/tile/tilegx/atomic-machine.h: ...here. Include <sysdeps/tile/atomic-machine.h> instead of <sysdeps/tile/bits/atomic.h>. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/tile/tilepro/bits/atomic.h: Move to ... * sysdeps/tile/tilepro/atomic-machine.h: ...here. Include <sysdeps/tile/atomic-machine.h> instead of <sysdeps/tile/bits/atomic.h>. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/arm/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/arm/atomic-machine.h: ...here. Include <sysdeps/arm/atomic-machine.h> instead of <sysdeps/arm/bits/atomic.h>. * sysdeps/unix/sysv/linux/hppa/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/hppa/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/m68k/coldfire/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/nios2/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/nios2/atomic-machine.h: ...here. (_NIOS2_BITS_ATOMIC_H): Rename macro to _NIOS2_ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/sh/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/sh/atomic-machine.h: ...here. * sysdeps/x86_64/bits/atomic.h: Move to ... * sysdeps/x86_64/atomic-machine.h: ...here. * include/atomic.h: Include <atomic-machine.h> instead of <bits/atomic.h>.
2015-09-08Move bits/libc-lock.h and bits/libc-lockP.h out of bits/ (bug 14912).Joseph Myers
It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/libc-lock.h to plain libc-lock.h and bits/libc-lockP.h to plain libc-lockP.h to follow that convention. Note that I don't know where libc-lockP.h comes from for Hurd (the Hurd libc-lock.h includes libc-lockP.h, but the only libc-lockP.h in the glibc source tree is for NPTL) - some unmerged patch? - but I updated the #include in the Hurd libc-lock.h anyway. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * bits/libc-lock.h: Move to ... * sysdeps/generic/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. * sysdeps/mach/hurd/bits/libc-lock.h: Move to ... * sysdeps/mach/hurd/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. [_LIBC]: Include <libc-lockP.h> instead of <bits/libc-lockP.h>. * sysdeps/mach/bits/libc-lock.h: Move to ... * sysdeps/mach/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. * sysdeps/nptl/bits/libc-lock.h: Move to ... * sysdeps/nptl/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. * sysdeps/nptl/bits/libc-lockP.h: Move to ... * sysdeps/nptl/libc-lockP.h: ...here. (_BITS_LIBC_LOCKP_H): Rename macro to _LIBC_LOCKP_H. * crypt/crypt_util.c: Include <libc-lock.h> instead of <bits/libc-lock.h>. * dirent/scandir-tail.c: Likewise. * dlfcn/dlerror.c: Likewise. * elf/dl-close.c: Likewise. * elf/dl-iteratephdr.c: Likewise. * elf/dl-lookup.c: Likewise. * elf/dl-open.c: Likewise. * elf/dl-support.c: Likewise. * elf/dl-writev.h: Likewise. * elf/rtld.c: Likewise. * grp/fgetgrent.c: Likewise. * gshadow/fgetsgent.c: Likewise. * gshadow/sgetsgent.c: Likewise. * iconv/gconv_conf.c: Likewise. * iconv/gconv_db.c: Likewise. * iconv/gconv_dl.c: Likewise. * iconv/gconv_int.h: Likewise. * iconv/gconv_trans.c: Likewise. * include/link.h: Likewise. * inet/getnameinfo.c: Likewise. * inet/getnetgrent.c: Likewise. * inet/getnetgrent_r.c: Likewise. * intl/bindtextdom.c: Likewise. * intl/dcigettext.c: Likewise. * intl/finddomain.c: Likewise. * intl/gettextP.h: Likewise. * intl/loadmsgcat.c: Likewise. * intl/localealias.c: Likewise. * intl/textdomain.c: Likewise. * libidn/idn-stub.c: Likewise. * libio/libioP.h: Likewise. * locale/duplocale.c: Likewise. * locale/freelocale.c: Likewise. * locale/newlocale.c: Likewise. * locale/setlocale.c: Likewise. * login/getutent_r.c: Likewise. * login/getutid_r.c: Likewise. * login/getutline_r.c: Likewise. * login/utmp-private.h: Likewise. * login/utmpname.c: Likewise. * malloc/mtrace.c: Likewise. * misc/efgcvt.c: Likewise. * misc/error.c: Likewise. * misc/fstab.c: Likewise. * misc/getpass.c: Likewise. * misc/mntent.c: Likewise. * misc/syslog.c: Likewise. * nis/nis_call.c: Likewise. * nis/nis_callback.c: Likewise. * nis/nss-default.c: Likewise. * nis/nss_compat/compat-grp.c: Likewise. * nis/nss_compat/compat-initgroups.c: Likewise. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nis/nss_nis/nis-alias.c: Likewise. * nis/nss_nis/nis-ethers.c: Likewise. * nis/nss_nis/nis-grp.c: Likewise. * nis/nss_nis/nis-hosts.c: Likewise. * nis/nss_nis/nis-network.c: Likewise. * nis/nss_nis/nis-proto.c: Likewise. * nis/nss_nis/nis-pwd.c: Likewise. * nis/nss_nis/nis-rpc.c: Likewise. * nis/nss_nis/nis-service.c: Likewise. * nis/nss_nis/nis-spwd.c: Likewise. * nis/nss_nisplus/nisplus-alias.c: Likewise. * nis/nss_nisplus/nisplus-ethers.c: Likewise. * nis/nss_nisplus/nisplus-grp.c: Likewise. * nis/nss_nisplus/nisplus-hosts.c: Likewise. * nis/nss_nisplus/nisplus-initgroups.c: Likewise. * nis/nss_nisplus/nisplus-network.c: Likewise. * nis/nss_nisplus/nisplus-proto.c: Likewise. * nis/nss_nisplus/nisplus-pwd.c: Likewise. * nis/nss_nisplus/nisplus-rpc.c: Likewise. * nis/nss_nisplus/nisplus-service.c: Likewise. * nis/nss_nisplus/nisplus-spwd.c: Likewise. * nis/ypclnt.c: Likewise. * nptl/libc_pthread_init.c: Likewise. * nss/getXXbyYY.c: Likewise. * nss/getXXent.c: Likewise. * nss/getXXent_r.c: Likewise. * nss/nss_db/db-XXX.c: Likewise. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_db/nss_db.h: Likewise. * nss/nss_files/files-XXX.c: Likewise. * nss/nss_files/files-alias.c: Likewise. * nss/nsswitch.c: Likewise. * posix/regex_internal.h: Likewise. * posix/wordexp.c: Likewise. * pwd/fgetpwent.c: Likewise. * resolv/res_hconf.c: Likewise. * resolv/res_libc.c: Likewise. * shadow/fgetspent.c: Likewise. * shadow/lckpwdf.c: Likewise. * shadow/sgetspent.c: Likewise. * socket/opensock.c: Likewise. * stdio-common/reg-modifier.c: Likewise. * stdio-common/reg-printf.c: Likewise. * stdio-common/reg-type.c: Likewise. * stdio-common/vfprintf.c: Likewise. * stdio-common/vfscanf.c: Likewise. * stdlib/abort.c: Likewise. * stdlib/cxa_atexit.c: Likewise. * stdlib/fmtmsg.c: Likewise. * stdlib/random.c: Likewise. * stdlib/setenv.c: Likewise. * string/strsignal.c: Likewise. * sunrpc/auth_none.c: Likewise. * sunrpc/bindrsvprt.c: Likewise. * sunrpc/create_xid.c: Likewise. * sunrpc/key_call.c: Likewise. * sunrpc/rpc_thread.c: Likewise. * sysdeps/arm/backtrace.c: Likewise. * sysdeps/generic/ldsodefs.h: Likewise. * sysdeps/generic/stdio-lock.h: Likewise. * sysdeps/generic/unwind-dw2-fde.c: Likewise. * sysdeps/i386/backtrace.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-compat.c: Likewise. * sysdeps/m68k/backtrace.c: Likewise. * sysdeps/mach/hurd/cthreads.c: Likewise. * sysdeps/mach/hurd/dirstream.h: Likewise. * sysdeps/mach/hurd/malloc-machine.h: Likewise. * sysdeps/nptl/malloc-machine.h: Likewise. * sysdeps/nptl/stdio-lock.h: Likewise. * sysdeps/posix/dirstream.h: Likewise. * sysdeps/posix/getaddrinfo.c: Likewise. * sysdeps/posix/system.c: Likewise. * sysdeps/pthread/aio_suspend.c: Likewise. * sysdeps/s390/s390-32/backtrace.c: Likewise. * sysdeps/s390/s390-64/backtrace.c: Likewise. * sysdeps/unix/sysv/linux/check_pf.c: Likewise. * sysdeps/unix/sysv/linux/if_index.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getutent_r.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getutid_r.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getutline_r.c: Likewise. * sysdeps/unix/sysv/linux/shm-directory.c: Likewise. * sysdeps/unix/sysv/linux/system.c: Likewise. * sysdeps/x86_64/backtrace.c: Likewise. * time/alt_digit.c: Likewise. * time/era.c: Likewise. * time/tzset.c: Likewise. * wcsmbs/wcsmbsload.c: Likewise. * nptl/tst-initializers1.c (do_test): Refer to <libc-lock.h> instead of <bits/libc-lock.h> in comment.
2015-09-04Rename bits/linkmap.h to linkmap.h (bug 14912).Joseph Myers
It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/linkmap.h to plain linkmap.h to follow that convention. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * bits/linkmap.h: Move to ... * sysdeps/generic/linkmap.h: ...here. * sysdeps/aarch64/bits/linkmap.h: Move to ... * sysdeps/aarch64/linkmap.h: ...here. * sysdeps/arm/bits/linkmap.h: Move to ... * sysdeps/arm/linkmap.h: ...here. * sysdeps/hppa/bits/linkmap.h: Move to ... * sysdeps/hppa/linkmap.h: ...here. * sysdeps/ia64/bits/linkmap.h: Move to ... * sysdeps/ia64/linkmap.h: ...here. * sysdeps/mips/bits/linkmap.h: Move to ... * sysdeps/mips/linkmap.h: ...here. * sysdeps/s390/bits/linkmap.h: Move to ... * sysdeps/s390/linkmap.h: ...here. * sysdeps/sh/bits/linkmap.h: Move to ... * sysdeps/sh/linkmap.h: ...here. * sysdeps/x86/bits/linkmap.h: Move to ... * sysdeps/x86/linkmap.h: ...here. * include/link.h: Include <linkmap.h> instead of <bits/linkmap.h>.
2015-09-04Rename bits/stdio-lock.h to stdio-lock.h (bug 14912).Joseph Myers
It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/stdio-lock.h to plain stdio-lock.h to follow that convention. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * bits/stdio-lock.h: Move to ... * sysdeps/generic/stdio-lock.h: ...here. (_BITS_STDIO_LOCK_H): Rename macro to _STDIO_LOCK_H. * sysdeps/nptl/bits/stdio-lock.h: Move to ... * sysdeps/nptl/stdio-lock.h: ...here. (_BITS_STDIO_LOCK_H): Rename macro to _STDIO_LOCK_H. * include/libio.h: Include <stdio-lock.h> instead of <bits/stdio-lock.h>. * sysdeps/nptl/fork.c: Likewise. * sysdeps/pthread/flockfile.c: Likewise. * sysdeps/pthread/ftrylockfile.c: Likewise. * sysdeps/pthread/funlockfile.c: Likewise.
2015-09-03Rename bits/libc-tsd.h to libc-tsd.h (bug 14912).Joseph Myers
It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/libc-tsd.h to plain libc-tsd.h to follow that convention. Tested for x86_64 (testing, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * bits/libc-tsd.h: Move to ... * sysdeps/generic/libc-tsd.h: ...here. (_GENERIC_BITS_LIBC_TSD_H): Rename macro to _GENERIC_LIBC_TSD_H. * sysdeps/mach/hurd/bits/libc-tsd.h: Move to ... * sysdeps/mach/hurd/libc-tsd.h: ...here. (_BITS_LIBC_TSD_H): Rename macro to _LIBC_TSD_H. * include/ctype.h: Include <libc-tsd.h> instead of <bits/libc-tsd.h>. * include/rpc/rpc.h: Likewise. * locale/localeinfo.h: Likewise. * sunrpc/rpc_thread.c: Likewise. * sysdeps/mach/hurd/malloc-machine.h: Likewise. * sysdeps/nptl/malloc-machine.h: Likewise.
2015-09-03Don't include <bits/stdio-lock.h> from installed <libio.h>.Joseph Myers
Every so often someone gets confused by the fact that the installed <bits/stdio-lock.h> header includes the non-installed <lowlevellock.h> header. This inclusion is not in fact a bug, because <bits/stdio-lock.h> only gets included by any header that users should include directly if _IO_MTSAFE_IO is defined, and that's an internal define used when building libio, not a feature test macro it's valid for users to define. However, on general principles it's best to have as little as possible in the installed headers that is inapplicable for valid uses of the installed glibc. This patch moves the include of <bits/stdio-lock.h> to the internal header include/libio.h, so that even if someone defines _IO_MTSAFE_IO it won't get included. This is intended as preparation for stopping <bits/stdio-lock.h> and <bits/libc-lock.h> from being installed at all (after this patch they aren't used in any installed header; formally of course they don't need to be installed even before this patch, but stopping them being installed before removing the #include would just exacerbate the confusion described above), and then moving those out of the bits/ namespace in accordance with the principle that that namespace is only for installed headers. The tests scanf15.c and scanf17.c avoid the internal headers; after this patch that means they need to undefine _IO_MTSAFE_IO as well as _LIBC so as to get a working _IO_lock_t definition for libio.h. This brings them closer to using the headers as an installed program would, which clearly accords with the intent of those tests. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * libio/libio.h [_IO_MTSAFE_IO]: Remove include of <bits/stdio-lock.h> and commented-out include of <comthread.h>. * include/libio.h [!_ISOMAC && _IO_MTSAFE_IO]: Include <bits/stdio-lock.h>. * stdio-common/scanf15.c (_IO_MTSAFE_IO): Undefine. * stdio-common/scanf17.c (_IO_MTSAFE_IO): Likewise.
2015-08-05Update version.h and include/features.h for 2.22 releaseglibc-2.22Carlos O'Donell
2015-07-23Also use l_tls_dtor_count to decide on object unload (BZ #18657)Siddhesh Poyarekar
When an TLS destructor is registered, we set the DF_1_NODELETE flag to signal that the object should not be destroyed. We then clear the DF_1_NODELETE flag when all destructors are called, which is wrong - the flag could have been set by other means too. This patch replaces this use of the flag by using l_tls_dtor_count directly to determine whether it is safe to unload the object. This change has the added advantage of eliminating the lock taking when calling the destructors, which could result in a deadlock. The patch also fixes the test case tst-tls-atexit - it was making an invalid dlclose call, which would just return an error silently. I have also added a detailed note on concurrency which also aims to justify why I chose the semantics I chose for accesses to l_tls_dtor_count. Thanks to Torvald for his help in getting me started on this and (literally) teaching my how to approach the problem. Change verified on x86_64; the test suite does not show any regressions due to the patch. ChangeLog: [BZ #18657] * elf/dl-close.c (_dl_close_worker): Don't unload DSO if there are pending TLS destructor calls. * include/link.h (struct link_map): Add concurrency note for L_TLS_DTOR_COUNT. * stdlib/cxa_thread_atexit_impl.c (__cxa_thread_atexit_impl): Don't touch the link map flag. Atomically increment l_tls_dtor_count. (__call_tls_dtors): Atomically decrement l_tls_dtor_count. Avoid taking the load lock and don't touch the link map flag. * stdlib/tst-tls-atexit-nodelete.c: New test case. * stdlib/Makefile (tests): Use it. * stdlib/tst-tls-atexit.c (do_test): dlopen tst-tls-atexit-lib.so again before dlclose. Add conditionals to allow tst-tls-atexit-nodelete test case to use it.
2015-07-14Factor file identity rules out of generic rtld code.Roland McGrath
2015-07-09Provide __libc_fatal for rtld.Roland McGrath
2015-07-09PLT avoidance for _exit in rtld.Roland McGrath
2015-07-08libio: fmemopen rewrite to POSIX complianceAdhemerval Zanella
This patch added a new fmemopen version, for glibc 2.22, that aims to be POSIX complaint. It fixes some long-stading glibc fmemopen issues, such as: * it changes the way fseek with SEEK_END works on fmemopen to seek relative to buffer size instead of first '\0'. This is default mode and 'b' opening mode does not change internal behavior (bz#6544). * fix apending opening mode to use as start position either first null byte of len specified in function call (bz#13152 and #13151). * remove binary option 'b' and internal different handling (bz#12836) * fix seek/SEE_END with negative values (bz#14292). A compatibility symbol is provided to with old behavior for older symbols version (2.2.5). * include/stdio.h (fmemopen): Remove hidden prototype. (__fmemopen): Add new hidden prototype. * libio/Makefile: Add oldfmemopen object. * libio/Versions [GLIBC_2.22]: Add new fmemopen symbol. * libio/fmemopen.c (__fmemopen): Function rewrite to be POSIX compliance. * libio/oldfmemopen.c: New file: old fmemopen implementation for symbol compatibility. * stdio-common/Makefile [tests]: Add new tst-fmemopen3. * stdio-common/psiginfo.c [psiginfo]: Call __fmemopen instead of fmemopen. * stdio-common/tst-fmemopen3.c: New file: more fmemopen tests, focus on append and read mode. * sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.22]: Add fmemopen. * sysdeps/unix/sysv/linux/alpha/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist [GLIBC_2.22]: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist [GLIBC_2.22]: Likewise.
2015-07-07Add forced deletion support to _dl_close_workerPavel Kopyl
https://sourceware.org/bugzilla/show_bug.cgi?id=17833 I've a shared library that contains both undefined and unique symbols. Then I try to call the following sequence of dlopen: 1. dlopen("./libfoo.so", RTLD_NOW) 2. dlopen("./libfoo.so", RTLD_LAZY | RTLD_GLOBAL) First dlopen call terminates with error because of undefined symbols, but STB_GNU_UNIQUE ones set DF_1_NODELETE flag and hence block library in the memory. The library goes into inconsistent state as several structures remain uninitialized. For instance, relocations for GOT table were not performed. By the time of second dlopen call this library looks like as it would be fully initialized but this is not true: any call through incorrect GOT table leads to segmentation fault. On some systems this inconsistency triggers assertions in the dynamic linker. This patch adds a parameter to _dl_close_worker to implement forced object deletion in case of dlopen() failure: 1. Clears DF_1_NODELETE bit if forced, to allow library to be removed from memory. 2. For each unique symbol that is defined in this object clears appropriate entry in _ns_unique_sym_table. [BZ #17833] * elf/Makefile (tests): Add tst-nodelete. (modules-names): Add tst-nodelete-uniquemod. (tst-nodelete-uniquemod.so-no-z-defs): New. (tst-nodelete-rtldmod.so-no-z-defs): Likewise. (tst-nodelete-zmod.so-no-z-defs): Likewise. ($(objpfx)tst-nodelete): Likewise. ($(objpfx)tst-nodelete.out): Likewise. (LDFLAGS-tst-nodelete): Likewise. (LDFLAGS-tst-nodelete-zmod.so): Likewise. * elf/dl-close.c (_dl_close_worker): Add a parameter to implement forced object deletion. (_dl_close): Pass false to _dl_close_worker. * elf/dl-open.c (_dl_open): Pass true to _dl_close_worker. * elf/tst-nodelete.cc: New file. * elf/tst-nodeletelib.cc: Likewise. * elf/tst-znodeletelib.cc: Likewise. * include/dlfcn.h (_dl_close_worker): Add a new parameter.
2015-06-30Clean up BUSY_WAIT_NOP and atomic_delay.Torvald Riegel
This patch combines BUSY_WAIT_NOP and atomic_delay into a new atomic_spin_nop function and adjusts all clients. The new function is put into atomic.h because what is best done in a spin loop is architecture-specific, and atomics must be used for spinning. The function name is meant to tell users that this has no effect on synchronization semantics but is a performance aid for spinning.
2015-06-18Remove include/bits/ipc.h.Joseph Myers
Ten conformtest failures arise from the internal header include/bits/ipc.h failing to condition internal declarations, outside the public namespace of headers including bits/ipc.h, on [!_ISOMAC]. As discussed in <https://sourceware.org/ml/libc-alpha/2015-06/msg00653.html>, the internal declarations that are actually relevant are in ipc_priv.h and so include/bits/ipc.h should not be needed at all; this patch removes it. (Ten further conformtest failures for other headers including bits/ipc.h remain because of other conformance issues in those headers.) Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * include/bits/ipc.h: Remove file. * conform/Makefile (test-xfail-XPG3/sys/msg.h/conform): Remove variable. (test-xfail-XPG3/sys/shm.h/conform): Likewise. (test-xfail-XPG4/sys/msg.h/conform): Likewise. (test-xfail-XPG4/sys/shm.h/conform): Likewise. (test-xfail-UNIX98/sys/msg.h/conform): Likewise. (test-xfail-UNIX98/sys/shm.h/conform): Likewise. (test-xfail-XOPEN2K/sys/msg.h/conform): Likewise. (test-xfail-XOPEN2K/sys/shm.h/conform): Likewise. (test-xfail-XOPEN2K8/sys/msg.h/conform): Likewise. (test-xfail-XOPEN2K8/sys/shm.h/conform): Likewise.
2015-06-17Fix nice getpriority, setpriority namespace (bug 18553).Joseph Myers
nice (XPG3) calls getpriority and setpriority (in XPG4 but not XPG3, i.e. UX-shaded in XPG4). This patch fixes this by making those functions into weak aliases of __* functions and calling the __* versions as needed. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). This completes cleaning up the unsorted linknamespace test XFAILs. [BZ #18553] * resource/getpriority.c (getpriority): Rename to __getpriority and define as weak alias of __getpriority. * resource/setpriority.c (setpriority): Rename to __setpriority and define as weak alias of __setpriority. * sysdeps/mach/hurd/getpriority.c (getpriority): Rename to __getpriority and define as weak alias of __getpriority. * sysdeps/mach/hurd/setpriority.c (setpriority): Rename to __setpriority and define as weak alias of __setpriority. * sysdeps/unix/syscalls.list (getpriority): Use __getpriority as strong name. (setpriority): Use __setpriority as strong name. * sysdeps/unix/sysv/linux/getpriority.c (getpriority): Rename to __getpriority and define as weak alias of __getpriority. * include/sys/resource.h (__getpriority): Declare. Use libc_hidden_proto. (__setpriority): Likewise. (getpriority): Don't use libc_hidden_proto. (setpriority): Likewise. * sysdeps/posix/nice.c (nice): Call __getpriority instead of getpriority. Call __setpriority instead of setpriority. * conform/Makefile (test-xfail-XPG3/unistd.h/linknamespace): Remove variable.
2015-06-17Fix ttyslot namespace (bug 18547).Joseph Myers
ttyslot (XPG4) calls the non-XPG4 functions endttyent, getttyent and setttyent, which in turn bring in references to fgets_unlocked and getttynam. This patch fixes this by making these functions into weak aliases and calling the __* names as needed. Tested for x86_64 and x86 (testsuite, and that disassembly of installed stripped shared libraries is unchanged by the patch). [BZ #18547] * misc/getttyent.c (getttynam): Rename to __getttynam and define as weak alias of __getttynam. Use prototype function definition. Call __setttyent, __getttyent and __endttyent instead of setttyent, getttyent and endttyent. (getttyent): Rename to __getttyent and define as weak alias of __getttyent. Call __setttyent instead of setttyent. Call __fgets_unlocked instead of fgets_unlocked. (setttyent): Rename to __setttyent and define as weak alias of __setttyent. (endttyent): Rename to __endttyent and define as weak alias of __endttyent. * include/ttyent.h (__getttyent): Declare. Use libc_hidden_proto. (__setttyent): Likewise. (__endttyent): Likewise. (getttyent): Don't use libc_hidden_proto. (setttyent): Likewise. (endttyent): Likewise. * misc/ttyslot.c (ttyslot): Call __setttyent, __getttyent and __endttyent instead of setttyent, getttyent and endttyent. * conform/Makefile (test-xfail-XPG4/unistd.h/linknamespace): Remove variable.
2015-06-17Fix mq_notify socket, recv namespace (bug 18546).Joseph Myers
mq_notify (in the 1996 edition of POSIX) brings in references to recv and socket (not in POSIX until the 2001 edition). This patch fixes this by using __recv and __socket, exporting them from libc at version GLIBC_PRIVATE. Tested for x86_64 and x86 (testsuite and comparison of installed stripped shared libraries; PLT / dynamic symbol table changes render the comparison not particularly useful for libc). [BZ #18546] * socket/recv.c (__recv): Use libc_hidden_def. * socket/socket.c (__socket): Likewise. * sysdeps/mach/hurd/recv.c (__recv): Likewise. * sysdeps/mach/hurd/socket.c (__socket): Likewise. * sysdeps/unix/sysv/linux/generic/recv.c (__recv): Likewise. * sysdeps/unix/sysv/linux/recv.c (__recv): Use libc_hidden_weak. * sysdeps/unix/sysv/linux/socket.c (__socket): Use libc_hidden_def. * sysdeps/unix/sysv/linux/x86_64/recv.c (__recv): Use libc_hidden_weak. * include/sys/socket.h (__socket): Do not use attribute_hidden. Use libc_hidden_proto. (__recv): Likewise. * socket/Versions (libc): Export __recv and __socket at version GLIBC_PRIVATE. * sysdeps/unix/sysv/linux/mq_notify.c (helper_thread): Call __recv instead of recv. (init_mq_netlink): Call __socket instead of socket. * conform/Makefile (test-xfail-POSIX/mqueue.h/linknamespace): Remove variable.
2015-06-17Fix mq_receive, mq_send mq_timed* namespace (bug 18545).Joseph Myers
mq_receive calls mq_timedreceive, and mq_send calls mq_timedsend. But mq_receive and mq_send were in POSIX by 1996, while mq_timed* were added in the 2001 edition of POSIX. This patch fixes this by making mq_timed* into weak aliases for __mq_timed* and calling the __mq_timed* names. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18545] * rt/mq_timedreceive.c (mq_timedreceive): Rename to __mq_timedreceive and define as alias of __mq_timedreceive. Use hidden_weak. * rt/mq_timedsend.c (mq_timedsend): Rename to __mq_timedsend and define as alias of __mq_timedsend. Use hidden_weak. * sysdeps/unix/sysv/linux/syscalls.list (mq_timedsend): Use __mq_timedsend as strong name. (mq_timedreceive): Use __mq_timedreceive as strong name. * include/mqueue.h (__mq_timedsend): Declare. Use hidden_proto. (__mq_timedreceive): Likewise. * sysdeps/unix/sysv/linux/mq_receive.c (mq_receive): Call __mq_timedreceive instead of mq_timedreceive. * sysdeps/unix/sysv/linux/mq_send.c (mq_send): Call __mq_timedsend instead of mq_timedsend. * conform/Makefile (test-xfail-UNIX98/mqueue.h/linknamespace): Remove variable.
2015-06-17Fix mq_notify pthread_barrier_* namespace (bug 18544).Joseph Myers
mq_notify (present in POSIX by 1996) brings in references to pthread_barrier_init and pthread_barrier_wait (new in the 2001 edition of POSIX). This patch fixes this by making those functions into weak aliases of __pthread_barrier_*, exporting the __pthread_barrier_* names at version GLIBC_PRIVATE and using them in mq_notify. Tested for x86_64 and x86 (testsuite, and comparison of installed stripped shared libraries). Changes in addresses from dynamic symbol table / PLT changes render most comparisons not particularly useful, but when the addresses of subsequent code don't change there's no sign of unexpected changes there. This patch does not remove any linknamespace XFAILs because of other namespace issues remaining with mqueue.h functions. [BZ #18544] * nptl/pthread_barrier_init.c (pthread_barrier_init): Rename to __pthread_barrier_init and define as weak alias of __pthread_barrier_init. * sysdeps/sparc/nptl/pthread_barrier_init.c (pthread_barrier_init): Likewise. * nptl/pthread_barrier_wait.c (pthread_barrier_wait): Rename to __pthread_barrier_wait and define as weak alias of __pthread_barrier_wait. * sysdeps/sparc/nptl/pthread_barrier_wait.c (pthread_barrier_wait): Likewise. * sysdeps/sparc/sparc32/pthread_barrier_wait.c (pthread_barrier_wait): Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S (pthread_barrier_wait): Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S (pthread_barrier_wait): Likewise. * nptl/Versions (libpthread): Export __pthread_barrier_init and __pthread_barrier_wait at version GLIBC_PRIVATE. * include/pthread.h (__pthread_barrier_init): Declare. (__pthread_barrier_wait): Likewise. * sysdeps/unix/sysv/linux/mq_notify.c (notification_function): Call __pthread_barrier_wait instead of pthread_barrier_wait. (helper_thread): Likewise. (init_mq_netlink): Call __pthread_barrier_init instead of pthread_barrier_init.
2015-06-17Fix swscanf vswscanf namespace (bug 18542).Joseph Myers
swscanf (added in C90 Amendment 1, present in UNIX98) calls vswscanf (added in C99, not in C90 Amendment 1 or UNIX98). This patch fixes this by using __vswscanf instead and making vswscanf into a weak alias. (I intend to add conform/ test support for C90 Amendment 1 - and various other standard versions supported by glibc but not yet by conform/ tests - at some point, once the results for currently tested standards are cleaner.) Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #18542] * libio/iovswscanf.c (__vswscanf): Use libc_hidden_def. (vswscanf): Use ldbl_weak_alias instead of ldbl_strong_alias * include/wchar.h (__vswscanf): Declare. Use libc_hidden_proto. * libio/swscanf.c (__swscanf): Call __vswscanf instead of vswscanf. * conform/Makefile (test-xfail-UNIX98/wchar.h/linknamespace): Remove variable.
2015-06-17Fix getpass fflush_unlocked namespace (bug 18540).Joseph Myers
The getpass function (XPG3 / XPG4 / UNIX98) calls fflush_unlocked (not in any of those standards). This patch fixes this by making fflush_unlocked into a weak alias for __fflush_unlocked and calling __fflush_unlocked from getpass. Tested for x86_64 and x86 (testsuite, and that disassembly of installed stripped shared libraries is unchanged by the patch). [BZ #18540] * libio/iofflush.c [!_IO_MTSAFE_IO] (__fflush_unlocked): Define as strong alias of _IO_fflush. Use libc_hidden_def. * libio/iofflush_u.c (fflush_unlocked): Rename to __fflush_unlocked and define as weak alias of __fflush_unlocked. Use libc_hidden_weak. * include/stdio.h (__fflush_unlocked): Declare. Use libc_hidden_proto. * misc/getpass.c (getpass): Call __fflush_unlocked instead of fflush_unlocked. * conform/Makefile (test-xfail-UNIX98/unistd.h/linknamespace): Remove variable.
2015-06-17Fix sem_* tdelete, tfind, tsearch, twalk namespace (bug 18536).Joseph Myers
The sem_* functions bring in references to tdelete, tfind, tsearch and twalk. But the t* functions are XSI-shaded, while sem_* aren't. This patch fixes this by using __t* instead, exporting those functions from libc at version GLIBC_PRIVATE (since sem_* are in libpthread) and using libc_hidden_* for the benefit of calls within libc. Tested for x86_64 and x86 (testsuite, and comparison of disassembly of installed stripped shared libraries). libpthread gets changes from PLT reordering; addresses in libc change because of PLT / dynamic symbol table changes. [BZ #18536] * misc/tsearch.c (__tsearch): Use libc_hidden_def. (__tfind): Likewise. (__tdelete): Likewise. (__twalk): Likewise. * misc/Versions (libc): Add __tdelete, __tfind, __tsearch and __twalk to GLIBC_PRIVATE. * include/search.h (__tsearch): Use libc_hidden_proto. (__tfind): Likewise. (__tdelete): Likewise. (__twalk): Likewise. * nptl/sem_close.c (sem_close): Call __twalk instead of twalk. Call __tdelete instead of tdelete. * nptl/sem_open.c (check_add_mapping): Call __tfind instead of tfind. Call __tsearch instead of tsearch. * sysdeps/sparc/sparc32/sem_open.c (check_add_mapping): Likewise. * conform/Makefile (test-xfail-POSIX/semaphore.h/linknamespace): Remove variable. (test-xfail-POSIX2008/semaphore.h/linknamespace): Likewise.
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