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* Remove __need macros from errno.h (__need_Emath, __need_error_t).Zack Weinberg2017-06-142-385/+528
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is fairly complicated, not because the users of __need_Emath and __need_error_t have complicated requirements, but because the core changes had a lot of fallout. __need_error_t exists for gnulib compatibility in argz.h and argp.h. error_t itself is a Hurdism, an enum containing all the E-constants, so you can do 'p (error_t) errno' in gdb and get a symbolic value. argz.h and argp.h use it for function return values, and they want to fall back to 'int' when that's not available. There is no reason why these nonstandard headers cannot just go ahead and include all of errno.h; so we do that. __need_Emath is defined only by .S files; what they _really_ need is for errno.h to avoid declaring anything other than the E-constants (e.g. 'extern int __errno_location(void);' is a syntax error in assembly language). This is replaced with a check for __ASSEMBLER__ in errno.h, plus a carefully documented requirement for bits/errno.h not to define anything other than macros. That in turn has the consequence that bits/errno.h must not define errno - fortunately, all live ports use the same definition of errno, so I've moved it to errno.h. The Hurd bits/errno.h must also take care not to define error_t when __ASSEMBLER__ is defined, which involves repeating all of the definitions twice, but it's a generated file so that's okay. * stdlib/errno.h: Remove __need_Emath and __need_error_t logic. Reorganize file. Declare errno here. When __ASSEMBLER__ is defined, don't declare anything other than the E-constants. * include/errno.h: Change conditional for exposing internal declarations to (not _ISOMAC and not __ASSEMBLER__). * bits/errno.h: Remove logic for __need_Emath. Document requirements for a port-specific bits/errno.h. * sysdeps/unix/sysv/linux/bits/errno.h * sysdeps/unix/sysv/linux/alpha/bits/errno.h * sysdeps/unix/sysv/linux/hppa/bits/errno.h * sysdeps/unix/sysv/linux/mips/bits/errno.h * sysdeps/unix/sysv/linux/sparc/bits/errno.h: Add multiple-include guard and check against improper inclusion. Remove __need_Emath logic. Don't declare errno here. Ensure all constants are defined as simple integer literals. Consistent formatting. * sysdeps/mach/hurd/errnos.awk: Likewise. Only define error_t and enum __error_t_codes if __ASSEMBLER__ is not defined. * sysdeps/mach/hurd/bits/errno.h: Regenerate. * argp/argp.h, string/argz.h: Don't define __need_error_t before including errno.h. * sysdeps/i386/i686/fpu/multiarch/s_cosf-sse2.S * sysdeps/i386/i686/fpu/multiarch/s_sincosf-sse2.S * sysdeps/i386/i686/fpu/multiarch/s_sinf-sse2.S * sysdeps/x86_64/fpu/s_cosf.S * sysdeps/x86_64/fpu/s_sincosf.S * sysdeps/x86_64/fpu/s_sinf.S: Just include errno.h; don't define __need_Emath or include bits/errno.h directly.
* Fix struct sigaltstack namespace (bug 21517).Joseph Myers2017-06-053-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | glibc defines the stack_t type with the tag struct sigaltstack. This is not permitted by POSIX; sigaltstack is only reserved with file scope in the namespace of ordinary identifiers, not the tag namespace, and in the case where stack_t is obtained from ucontext.h rather than signal.h, it's not reserved with file scope at all. This patch removes the tag accordingly and updates uses in glibc of struct sigaltstack. This is similar to the removal of the "struct siginfo" tag a few years ago: C++ name mangling changes are an unavoidable consequence. A NEWS item is added to note the changed mangling. There is inevitably some risk of breaking builds of anything that relies on the struct sigaltstack name (though the first few hits I looked at from codesearch.debian.net generally seemed to involve code that could use the stack_t name conditionally, so depending on how they determine the conditionals they may work with glibc not defining the struct tag anyway). Tested for x86_64 and x86, and with build-many-glibcs.py. [BZ #21517] * bits/types/stack_t.h (stack_t): Remove struct tag. * sysdeps/unix/sysv/linux/bits/types/stack_t.h (stack_t): Likewise. * sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h (stack_t): Likewise. * debug/segfault.c (install_handler): Use stack_t instead of struct sigaltstack. * hurd/hurd/signal.h (struct hurd_sigstate): Likewise. * hurd/trampoline.c (_hurd_setup_sighandler): Likewise. * include/signal.h (__sigaltstack): Likwise. * signal/sigaltstack.c (__sigaltstack): Likewise. * signal/signal.h (sigaltstack): Likewise. * sysdeps/mach/hurd/i386/signal-defines.sym (SIGALTSTACK__SS_SP__OFFSET): Likewise. (SIGALTSTACK__SS_SIZE__OFFSET): Likewise. (SIGALTSTACK__SS_FLAGS__OFFSET): Likewise. * sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise. * sysdeps/mach/hurd/sigstack.c (sigstack): Likewise. * sysdeps/unix/sysv/linux/alpha/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/hppa/____longjmp_chk.c (CHECK_SP): Likewise. * sysdeps/unix/sysv/linux/ia64/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/m68k/____longjmp_chk.c (CHECK_SP): Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/sh/sys/procfs.h (struct elf_prstatus): Likewise. * sysdeps/unix/sysv/linux/sys/procfs.h (struct elf_prstatus): Likewise.
* Remove __need macros from signal.h.Zack Weinberg2017-05-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The types affected are __sig_atomic_t, sig_atomic_t, __sigset_t, sigset_t, sigval_t, sigevent_t, and siginfo_t. __sig_atomic_t is a scalar, so it's now directly available from bits/types.h. The others get bits/types/ headers. Side effects include: There have been small changes to which non-signal headers expose which subset of the signal-related types. A couple of architectures' nested siginfo_t fields had to be renamed to prevent undesired macro expansion. Internal code that wants to manipulate signal masks must now include <sigsetops.h> (which is not installed) and should be aware that __sigaddset, __sigandset, __sigdelset, __sigemptyset, and __sigorset no longer return a value (unlike the public API). Relatedly, the public signal.h no longer declares any of those functions. The obsolete sigmask() macro no longer has a system-specific definition -- in the cases where it matters, it didn't work anyway. New Linux architectures should create bits/siginfo-arch.h and/or bits/siginfo-consts-arch.h to customize their siginfo_t, rather than duplicating everything in bits/siginfo.h (which no longer exists). Add new __SI_* macros if necessary. Ports to other operating systems are strongly encouraged to generalize this scheme further. * bits/sigevent-consts.h * bits/siginfo-consts.h * bits/types/__sigset_t.h * bits/types/sigevent_t.h * bits/types/siginfo_t.h * sysdeps/unix/sysv/linux/bits/sigevent-consts.h * sysdeps/unix/sysv/linux/bits/siginfo-consts.h * sysdeps/unix/sysv/linux/bits/types/__sigset_t.h * sysdeps/unix/sysv/linux/bits/types/sigevent_t.h * sysdeps/unix/sysv/linux/bits/types/siginfo_t.h: New system-dependent bits headers. * sysdeps/unix/sysv/linux/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h: New Linux-only system-dependent bits headers. * signal/bits/types/sig_atomic_t.h * signal/bits/types/sigset_t.h * signal/bits/types/sigval_t.h: New non-system-dependent bits headers. * sysdeps/generic/sigsetops.h * sysdeps/unix/sysv/linux/sigsetops.h: New internal headers. * include/bits/types/sig_atomic_t.h * include/bits/types/sigset_t.h * include/bits/types/sigval_t.h: New wrappers. * signal/sigsetops.h * bits/siginfo.h * bits/sigset.h * sysdeps/unix/sysv/linux/bits/siginfo.h * sysdeps/unix/sysv/linux/bits/sigset.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo.h * sysdeps/unix/sysv/linux/mips/bits/siginfo.h * sysdeps/unix/sysv/linux/s390/bits/siginfo.h * sysdeps/unix/sysv/linux/sparc/bits/siginfo.h * sysdeps/unix/sysv/linux/tile/bits/siginfo.h * sysdeps/unix/sysv/linux/x86/bits/siginfo.h: Deleted. * signal/Makefile, sysdeps/unix/sysv/linux/Makefile: Update lists of installed headers. * posix/bits/types.h: Define __sig_atomic_t here. * signal/signal.h: Use the new bits headers; no need to handle __need_sig_atomic_t nor __need_sigset_t. Don't use __sigmask to define sigmask. * include/signal.h: No need to handle __need_sig_atomic_t nor __need_sigset_t. Don't define __sigemptyset. * io/sys/poll.h, setjmp/setjmp.h * sysdeps/arm/sys/ucontext.h, sysdeps/generic/sys/ucontext.h * sysdeps/i386/sys/ucontext.h, sysdeps/m68k/sys/ucontext.h * sysdeps/mach/hurd/i386/bits/sigcontext.h * sysdeps/mips/sys/ucontext.h, sysdeps/powerpc/novmxsetjmp.h * sysdeps/pthread/bits/sigthread.h * sysdeps/unix/sysv/linux/hppa/sys/ucontext.h * sysdeps/unix/sysv/linux/m68k/sys/ucontext.h * sysdeps/unix/sysv/linux/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/nios2/sys/ucontext.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/s390/sys/ucontext.h * sysdeps/unix/sysv/linux/sh/sys/ucontext.h * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h * sysdeps/unix/sysv/linux/tile/sys/ucontext.h * sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Use bits/types/__sigset_t.h. * misc/sys/select.h, posix/spawn.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/sys/epoll.h * sysdeps/unix/sysv/linux/sys/signalfd.h: Use bits/types/sigset_t.h. * resolv/netdb.h, rt/mqueue.h: Use bits/types/sigevent_t.h. * rt/aio.h: Use bits/types/sigevent_t.h and bits/sigevent-consts.h. * socket/sys/socket.h: Don't include bits/sigset.h. * login/utmp_file.c, shadow/lckpwdf.c, signal/sigandset.c * signal/sigisempty.c, stdlib/abort.c, sysdeps/posix/profil.c * sysdeps/posix/sigignore.c, sysdeps/posix/sigintr.c * sysdeps/posix/signal.c, sysdeps/posix/sigset.c * sysdeps/posix/sprofil.c, sysdeps/posix/sysv_signal.c * sysdeps/unix/sysv/linux/nptl-signals.h: Include sigsetops.h. * signal/sigaddset.c, signal/sigandset.c, signal/sigdelset.c * signal/sigorset.c, stdlib/abort.c, sysdeps/posix/sigignore.c * sysdeps/posix/signal.c, sysdeps/posix/sigset.c: __sigaddset, __sigandset, __sigdelset, __sigemptyset, __sigorset now return no value. * signal/sigaddset.c, signal/sigdelset.c, signal/sigismem.c Include <errno.h>, <signal.h>, and <sigsetops.h> instead of "sigsetops.h". * signal/sigsetops.c: Explicitly define __sigismember, __sigaddset, and __sigdelset as compatibility symbols. * signal/Versions: Correct commentary on __sigpause, __sigaddset, __sigdelset, __sigismember. * inet/rcmd.c: Include sigsetops.h. Convert old code using __sigblock/__sigsetmask to use __sigprocmask and friends.
* manual: Convert errno @comments to new @errno macro.Rical Jasan2017-05-191-16/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | errno.texi documents error macros, their values, and error strings in Texinfo @comments, some of which are also used for @standards. The purpose of this commit is to separate the standards from the error strings so that both the @standards conversion script picks up clean @standards and the errno documentation framework is improved. The error names, values, and messages are consolidated in a new custom macro, @errno. It is not clear that scripts within the sources rely on the special Texinfo @comment-based format to generate files used throughout the library, so the definition of @errno in macros.texi now provides a comment indicating the dependency. The dependent scripts are updated to use @errno, which also simplifies them a bit. The files those scripts generate were verified to be unchanged. The @errno macro is not visibly rendered in any way at this time, but it does use an @cindex command to add the error string to the Concept Index, to facilitate searching on error messages. * manual/errno.texi: Convert @comment-based errno documentation to @errno. * manual/macros.texi (@errno): New macro. Consolidate errors, their values, and messages, adding the error string to the Concept Index. Provide a warning in the comment about external (to the manual) dependencies. * sysdeps/gnu/errlist.awk: Use @errno instead of @comments. * sysdeps/mach/hurd/errnos.awk: Likewise.
* [BZ 21340] add support for POSIX_SPAWN_SETSIDAdhemerval Zanella2017-04-251-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the POSIX_SPAWN_SETSID flag. It was recently accepted by the Austin Group: http://austingroupbugs.net/view.php?id=1044 Checked on x86_64 Daurnimator <quae@daurnimator.com> Adhemerval Zanella <adhemerval.zanella@linaro.org> [BZ #21340] * posix/Makefile (tests): Add tst-posix_spawn-setsid to list of tests. * posix/spawn.h: define POSIX_SPAWN_SETSID flag. * posix/spawnattr_setflags.c (ALL_FLAGS): Add POSIX_SPAWN_SETSID to valid flags. * posix/tst-posix_spawn-setsid.c: Add test for POSIX_SPAWN_SETSID. * sysdeps/mach/hurd/spawni.c (__spawni): Implementation of POSIX_SPAWN_SETSID. * sysdeps/posix/spawni.c (__spawni): Likewise. * sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Likewise. * NEWS: Add note about POSIX_SPAWN_SETSID support.
* Assume that accept4 is always available and worksFlorian Weimer2017-04-191-2/+0
| | | | | | | | | | Simplify the Linux accept4 implementation based on the assumption that it is available in some way. __ASSUME_ACCEPT4_SOCKETCALL was previously unused, so remove it. For ia64, the accept4 system call (and socket call) were backported in kernel version 3.2.18. Reflect this in the installation instructions.
* Assume that O_CLOEXEC is always defined and worksFlorian Weimer2017-04-181-1/+0
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* Assume that dup3 is availableFlorian Weimer2017-04-181-1/+0
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* getopt: remove USE_NONOPTION_FLAGSZack Weinberg2017-04-071-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | glibc's implementation of getopt includes code to parse an environment variable named _XXX_GNU_nonoption_argv_flags_ (where XXX is the current process's PID in decimal); but all of it has been #ifdefed out since 2001, with no official way to turn it back on. According to commentary in our config.h.in, bash version 2.0 set this environment variable to indicate argv elements that were the result of glob expansion and therefore should not be treated as options, but the feature was "disabled later" because "it caused problems". According to bash's CHANGES file, "later" was release 2.01; it gives no more detail about what the problems were. Version 2.0 of bash was released on the last day of 1996, and version 2.01 in June of 1997. Twenty years later, I think it is safe to assume that this environment variable isn't coming back. * config.h.in (USE_NONOPTION_FLAGS): Remove. * csu/init-first.c: Remove all #ifdef USE_NONOPTION_FLAGS blocks. * sysdeps/mach/hurd/i386/init-first.c: Likewise. * posix/getopt_int.h: Likewise. * posix/getopt.c: Likewise. Also remove SWAP_FLAGS and the __libc_argc and __libc_argv externs, which were only used by #ifdef USE_NONOPTION_FLAGS blocks. * posix/getopt_init.c: Remove file. * posix/Makefile (routines): Remove getopt_init. * include/getopt.h: Don't declare __getopt_initialize_environment. * manual/getopt.texi: Remove mention of USE_NONOPTION_FLAGS in a comment.
* hurd: Make send/recv more posixishSamuel Thibault2017-03-132-2/+10
| | | | | | | | Thanks David Michael for the suggestion. * sysdeps/mach/hurd/send.c (__send): Convert hurdish error code into posix error code. * sysdeps/mach/hurd/recv.c (__recv): Likewise.
* hurd: Provide truncate64 and ftruncate64.Justus Winter2017-03-042-0/+76
| | | | | * sysdeps/mach/hurd/ftruncate64.c: New file. * sysdeps/mach/hurd/truncate64.c: Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-01256-256/+256
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* Add framework for tunablesSiddhesh Poyarekar2016-12-311-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tunables framework allows us to uniformly manage and expose global variables inside glibc as switches to users. tunables/README has instructions for glibc developers to add new tunables. Tunables support can be enabled by passing the --enable-tunables configure flag to the configure script. This patch only adds a framework and does not pose any limitations on how tunable values are read from the user. It also adds environment variables used in malloc behaviour tweaking to the tunables framework as a PoC of the compatibility interface. * manual/install.texi: Add --enable-tunables option. * INSTALL: Regenerate. * README.tunables: New file. * Makeconfig (CPPFLAGS): Define TOP_NAMESPACE. (before-compile): Generate dl-tunable-list.h early. * config.h.in: Add HAVE_TUNABLES. * config.make.in: Add have-tunables. * configure.ac: Add --enable-tunables option. * configure: Regenerate. * csu/init-first.c (__libc_init_first): Move __libc_init_secure earlier... * csu/init-first.c (LIBC_START_MAIN):... to here. Include dl-tunables.h, libc-internal.h. (LIBC_START_MAIN) [!SHARED]: Initialize tunables for static binaries. * elf/Makefile (dl-routines): Add dl-tunables. * elf/Versions (ld): Add __tunable_set_val to GLIBC_PRIVATE namespace. * elf/dl-support (_dl_nondynamic_init): Unset MALLOC_CHECK_ only when !HAVE_TUNABLES. * elf/rtld.c (process_envvars): Likewise. * elf/dl-sysdep.c [HAVE_TUNABLES]: Include dl-tunables.h (_dl_sysdep_start): Call __tunables_init. * elf/dl-tunable-types.h: New file. * elf/dl-tunables.c: New file. * elf/dl-tunables.h: New file. * elf/dl-tunables.list: New file. * malloc/tst-malloc-usable-static.c: New test case. * malloc/Makefile (tests-static): Add it. * malloc/arena.c [HAVE_TUNABLES]: Include dl-tunables.h. Define TUNABLE_NAMESPACE. (DL_TUNABLE_CALLBACK (set_mallopt_check)): New function. (DL_TUNABLE_CALLBACK_FNDECL): New macro. Use it to define callback functions. (ptmalloc_init): Set tunable values. * scripts/gen-tunables.awk: New file. * sysdeps/mach/hurd/dl-sysdep.c: Include dl-tunables.h. (_dl_sysdep_start): Call __tunables_init.
* Fix hurd __access_noerrno implementation.Adhemerval Zanella2016-11-181-3/+5
| | | | | | | | | | | | | | This patch fixes some hurd bits from commit afcf3cd8eb that added the __access_noerrno internal symbol. It basically removes the nonrequired __hurd_fail_noerrno (since the 'err' argument is ignored) and fixes a typo for EACCES. However, as stated on maillist [1] this __access_noerrno may still be unsafe to run during initialization of tunables on the Hurd. The access_common calls __hurd_file_name_lookup, which calls __hurd_file_name_lookup_retry, which can set errno. [1] https://sourceware.org/ml/libc-alpha/2016-11/msg00646.html
* New internal function __access_noerrnoAdhemerval Zanella2016-11-161-6/+31
| | | | | | | | | | | | | | | | | | | | | | | | Implement an internal version of __access called __access_noerrno that avoids setting errno. This is useful to check accessibility of files very early on in process startup i.e. before TLS setup. This allows tunables to replace MALLOC_CHECK_ safely (i.e. check existence of /etc/suid-debug to enable/disable MALLOC_CHECK) and at the same time initialize very early so that it can override IFUNCs. Checked on x86_64. * hurd/hurd.h (__hurd_fail_noerrno): New function. * include/unistd.h [IS_IN (rtld) || !defined SHARED]: Declare __access_noerrno. * io/access.c (__access_noerrno): New function. * sysdeps/mach/hurd/access.c (hurd_fail_seterrno): New function. (hurd_fail_seterrno): Likewise. (access_common): Likewise. (__access_noerrno): Likewise. * sysdeps/nacl/access.c (__access_noerrno): Likewise. * sysdeps/unix/sysv/linux/access.c (__access_noerrno): Likewise. * sysdeps/nacl/nacl-interfaces.h (NACL_CALL_NOERRNO): New macro.
* hurd: Fix spurious port deallocationBrent W. Baccala2016-10-311-1/+2
| | | | | * sysdeps/mach/hurd/dl-sysdep.c (__mmap): Do not deallocate memobj_wr when it is MACH_PORT_NULL.
* Installed-header hygiene (BZ#20366): stack_t.Zack Weinberg2016-09-231-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sys/ucontext.h unconditionally uses stack_t, and it does not make sense to change that. But signal.h only declares stack_t under __USE_XOPEN_EXTENDED || __USE_XOPEN2K8. The actual definition is already in a bits header, bits/sigstack.h, but that header insists on only being included by signal.h, so we have to change that as well as all of the sys/ucontext.h variants. (Some but not all variants of bits/sigcontext.h, which sys/ucontext.h may also need, had already received this adjustment; for consistency, I made them all the same, even if that's not strictly necessary in some configurations.) bits/sigcontext.h and bits/sigstack.h also all need to receive multiple inclusion guards. * sysdeps/generic/sys/ucontext.h * sysdeps/arm/sys/ucontext.h * sysdeps/i386/sys/ucontext.h * sysdeps/m68k/sys/ucontext.h * sysdeps/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h * sysdeps/unix/sysv/linux/alpha/sys/ucontext.h * sysdeps/unix/sysv/linux/arm/sys/ucontext.h * sysdeps/unix/sysv/linux/hppa/sys/ucontext.h * sysdeps/unix/sysv/linux/ia64/sys/ucontext.h * sysdeps/unix/sysv/linux/m68k/sys/ucontext.h * sysdeps/unix/sysv/linux/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/nios2/sys/ucontext.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/s390/sys/ucontext.h * sysdeps/unix/sysv/linux/sh/sys/ucontext.h * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h * sysdeps/unix/sysv/linux/tile/sys/ucontext.h * sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Include both bits/sigcontext.h and bits/sigstack.h. Fix grammar error in comment, if present. * bits/sigstack.h * sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h * sysdeps/unix/sysv/linux/alpha/bits/sigstack.h * sysdeps/unix/sysv/linux/bits/sigstack.h * sysdeps/unix/sysv/linux/ia64/bits/sigstack.h * sysdeps/unix/sysv/linux/mips/bits/sigstack.h * sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h * sysdeps/unix/sysv/linux/sparc/bits/sigstack.h * bits/sigcontext.h * sysdeps/mach/hurd/i386/bits/sigcontext.h * sysdeps/unix/sysv/linux/bits/sigcontext.h * sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h * sysdeps/unix/sysv/linux/sparc/bits/sigcontext.h: Add multiple inclusion guard. Permit inclusion by sys/ucontext.h as well as signal.h, if this was not already allowed. Request definition of size_t if necessary. Minimize semantically-null differences across files.
* Installed-header hygiene (BZ#20366): conditionally defined structures.Zack Weinberg2016-09-231-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several network-related structures are defined conditionally under __USE_MISC, but unconditionally used by other headers. The path of least resistance is usually to condition the uses on __USE_MISC as well. * sysdeps/mach/hurd/net/if_ppp.h * sysdeps/unix/sysv/linux/net/if_ppp.h: Only define struct ifpppstatsreq and struct ifpppcstatsreq if __USE_MISC is defined, to ensure struct ifreq is declared. * inet/netinet/ether.h: Condition all function prototypes on __USE_MISC, to ensure struct ether_addr is declared. sys/socket.h defines struct osockaddr only under __USE_MISC, whereas protocols/talkd.h requires it unconditionally. Here it doesn't make sense to condition the entire body of protocols/talkd.h on __USE_MISC. Rather than complicate sys/socket.h with a __need macro or duplicate the definition, I am introducing a new concept: tiny headers named bits/types/TYPE.h that define TYPE and nothing else. This can, I hope, ultimately replace *all* the __need macros. The guard macro for such headers will be __TYPE_defined, just in case application or third-party library code is looking at them. * socket/bits/types/struct_osockaddr.h: New header. * include/bits/types/struct_osockaddr.h: New wrapper. * socket/Makefile: Install the new header. * socket/sys/socket.h, inet/protocols/talkd.h: Refer to bits/types/struct_osockaddr.h for the definition of struct osockaddr.
* Installed-header hygiene (BZ#20366): obsolete BSD u_* types.Zack Weinberg2016-09-234-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The types u_char, u_short, u_int, u_long, ushort, uint, ulong, u_int8_t, u_int16_t, u_int32_t, u_int64_t, quad_t, and u_quad_t are BSDisms that have never been standardized. While glibc should continue to *provide* these types for compatibility's sake, its public headers should not use them. The meat of this change was mechanically generated by the following shell command: perl -pi~ -e ' s/\b(__)?u_char\b/unsigned char/g; s/\b(__)?u_?short\b/unsigned short/g; s/\b(__)?u_?int\b/unsigned int/g; s/\b(__)?u_?long\b/unsigned long/g; s/\b(__)?u_int8_t\b/uint8_t/g; s/\b(__)?u_int16_t\b/uint16_t/g; s/\b(__)?u_int32_t\b/uint32_t/g; s/\b(__)?u_int64_t\b/uint64_t/g; s/\b(__)?u_quad_t\b/uint64_t/g; s/\b(__)?quad_t\b/uint64_t/g; ' $(grep -lE -e '\<((__)?(quad_t|u(short|int|long|_(char|short|int([0-9]+_t)?|long|quad_t))))\>' \ $(grep -LE '\<(_(SYS|BITS)_TYPES_H|rpc/(rpc|rpc_msg|types|xdr)\.h)\>' \ $(find . \( -false $(sed 's/^/-o -name /' all-installed-headers) \ \) -printf '%P\n' | sort -u))) where 'all-installed-headers' was a list of the basenames of all installed header files, manually extracted from the Makefiles. Non-installed wrapper headers in include/ are also adjusted, for consistency. I then manually fixed up indentation and line-wrapping. sys/types.h and bits/types.h are excluded because they must continue to define the u_* types (under __USE_MISC) for compatibility with applications. They do not use these types themselves. All headers that (transitively) include rpc/types.h are also excluded, for three reasons. First, the u_* types are defined by rpc/types.h, unconditionally (not just under __USE_MISC) so they are logically part of the SunRPC API. Second, many of those headers appear to be machine-generated. Third, it's my understanding that we are getting rid of as much of SunRPC as possible in the near future. (The one file under sunrpc/ that's touched, sunrpc/rpc/rpc_des.h, does *not* include rpc/types.h. This may itself be a bug.) After changing from u_intNN_t to uintNN_t, a number of headers now need to include stdint.h to pick up those types. It might be more hygenic, namespace-wise, to use __uintNN_t instead, but none of these headers are bound by ISO or POSIX to do so, and it's unlikely that anyone using them will be bothered. (The two files that were using __-prefixed versions of the u_types, sysdeps/mach/hurd/net/route.h and sysdeps/unix/sysv/linux/net/route.h, both already also contained uses of the unprefixed versions.) Some of these files directly included features.h and/or sys/cdefs.h, which I removed, as the style generally seems to be to let sys/types.h do that for us. (This does not change the set of definitions exposed by any header; sys/types.h unconditionally includes both features.h and sys/cdefs.h.) One file included asm/types.h unnecessarily. * bits/in.h, gmon/sys/gmon.h, inet/netinet/igmp.h * inet/protocols/routed.h, inet/protocols/talkd.h * inet/protocols/timed.h, io/fts.h, nptl_db/thread_db.h * resolv/arpa/nameser.h, resolv/resolv.h, sunrpc/rpc/rpc_des.h * sysdeps/generic/netinet/if_ether.h * sysdeps/generic/netinet/in_systm.h * sysdeps/generic/netinet/ip.h, sysdeps/generic/netinet/tcp.h * sysdeps/gnu/netinet/ip_icmp.h, sysdeps/gnu/netinet/tcp.h * sysdeps/gnu/netinet/udp.h, sysdeps/mach/hurd/net/ethernet.h * sysdeps/mach/hurd/net/if_arp.h * sysdeps/mach/hurd/net/if_ppp.h * sysdeps/mach/hurd/net/route.h, sysdeps/mach/sys/reboot.h * sysdeps/unix/sysv/linux/bits/in.h * sysdeps/unix/sysv/linux/net/ethernet.h * sysdeps/unix/sysv/linux/net/if_arp.h * sysdeps/unix/sysv/linux/net/if_ppp.h * sysdeps/unix/sysv/linux/net/if_shaper.h * sysdeps/unix/sysv/linux/net/route.h * sysdeps/unix/sysv/linux/netinet/if_ether.h * sysdeps/unix/sysv/linux/netinet/if_fddi.h * sysdeps/unix/sysv/linux/netinet/if_tr.h * sysdeps/unix/sysv/linux/netipx/ipx.h * sysdeps/unix/sysv/linux/sys/acct.h * include/arpa/nameser.h, include/resolv.h: Change all uses of u_char to unsigned char, u_short and ushort to unsigned short, u_int and uint to unsigned int, u_long and ulong to unsigned long, u_int8_t to uint8_t, u_int16_t to uint16_t, u_int32_t to uint32_t, quad_t to int64_t, and u_int64_t and u_quad_t to uint64_t. * mach/sys/reboot.h: Remove two casts of integer literals to the types they already have. * bits/in.h: Correct error in description of IP_MULTICAST_LOOP. * sysdeps/unix/sysv/linux/bits/in.h: Likewise. * sysdeps/unix/sysv/linux/netinet/if_ether.h: Change a comment from referring to 'unsigned char' to 'uint8_t' for consistency with the macro definition below. * gmon/sys/gmon.h, inet/netinet/igmp.h, inet/protocols/talkd.h * io/fts.h, resolv/arpa/nameser.h, resolv/resolv.h * sunrpc/rpc/rpc_des.h, sysdeps/generic/netinet/ip.h * sysdeps/gnu/netinet/tcp.h, sysdeps/gnu/netinet/udp.h * sysdeps/mach/hurd/net/if_ppp.h, sysdeps/unix/sysv/linux/net/if_ppp.h * sysdeps/unix/sysv/linux/sys/acct.h * include/arpa/nameser.h, include/resolv.h: Fix indentation disrupted by mechanical edits. * inet/protocols/talkd.h, resolv/arpa/nameser.h * sysdeps/generic/netinet/in_systm.h * sysdeps/gnu/netinet/ip_icmp.h, sysdeps/gnu/netinet/tcp.h * sysdeps/gnu/netinet/udp.h * sysdeps/unix/sysv/linux/net/ethernet.h * sysdeps/unix/sysv/linux/net/if_arp.h * sysdeps/unix/sysv/linux/net/if_ppp.h * sysdeps/unix/sysv/linux/net/if_shaper.h * sysdeps/unix/sysv/linux/netinet/if_fddi.h * sysdeps/unix/sysv/linux/netinet/if_tr.h * sysdeps/unix/sysv/linux/netipx/ipx.h * sysdeps/unix/sysv/linux/sys/acct.h Include stdint.h for uintNN_t definitions. Don't include sys/cdefs.h, features.h, or asm/types.h directly.
* Installed-header hygiene (BZ#20366): Simple self-contained fixes.Zack Weinberg2016-09-231-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some headers did not include all of their prerequisite headers. * rpcsvc/nislib.h: Include rpcsvc/nis.h. * sysdeps/unix/sysv/linux/netrose/rose.h: Include sys/socket.h and netax25/ax25.h. <endian.h> only defines BYTE_ORDER, BIG_ENDIAN, LITTLE_ENDIAN, etc. under __USE_MISC; glibc's headers should use __BYTE_ORDER, __BIG_ENDIAN, __LITTLE_ENDIAN, etc. instead. * inet/netinet/icmp6.h, inet/netinet/ip6.h * resolv/arpa/nameser_compat.h: Use __BYTE_ORDER etc. instead of BYTE_ORDER etc. sys/types.h only conditionally defines caddr_t and clockid_t. * sysdeps/unix/sysv/linux/sys/quota.h: Use __caddr_t instead of caddr_t. * sysdeps/unix/sysv/linux/sys/timerfd.h: Use __clockid_t instead of clockid_t. Remove a #warning that was the sole actual problem with using sys/ipc.h without _GNU_SOURCE/_XOPEN_SOURCE. * sysvipc/sys/ipc.h: Remove unnecessary #warning. _LIBC, __USE_XOPEN2K8, and __STDC_VERSION__ are not always defined. It seems to me that _LIBC should not appear in installed headers, but avoiding that for argp specifically would require more surgery than feels appropriate for this patch set. It's possible that "#ifdef _LIBC" would be sufficient, but I wanted to be conservative. All three versions of bits/socket.h want to know whether __flexarr will produce a real flexible array member -- specifically, one that doesn't alter sizeof(the structure containing it). They were testing for this with a complicated #if condition that did not agree with sys/cdefs.h and that tripped -Wundef warnings under -std=c90. I added a new macro to sys/cdefs.h, __glibc_c99_flexarr_available, which reveals exactly what these headers want to know. I also took the opportunity to flatten the rather messy conditional nest defining __flexarr. * argp/argp.h: Check whether _LIBC is defined before expanding it. * posix/glob.h: Check whether __USE_XOPEN2K8 is defined instead of expanding it. * misc/sys/cdefs.h: Tidy up conditional nest defining __flexarr. Define __glibc_c99_flexarr_available to 1 when the compiler supports C99-compatible flexible array members, 0 otherwise. * sysdeps/unix/sysv/linux/bits/socket.h * sysdeps/mach/hurd/bits/socket.h * bits/socket.h: Use __glibc_c99_flexarr_available in definitions of struct cmsghdr and CMSG_DATA.
* hurdmalloc: Run fork handler as late as possible [BZ #19431]Samuel Thibault2016-09-221-6/+9
| | | | | | | | | | | | | | | | | | | | | This is the hurd-specific follow-up for 29d794863cd6e03115d3670707cc873a9965ba92 : hurdmalloc also needs the same fix * hurd/hurdmalloc.c (malloc_fork_prepare): Rename to _hurd_malloc_fork_prepare. (malloc_fork_parent): Rename to _hurd_malloc_fork_parent. (malloc_fork_child): Rename to _hurd_malloc_fork_child. (_hurd_fork_prepare_hook): Drop malloc_fork_prepare. (_hurd_fork_parent_hook): Drop malloc_fork_parent. (_hurd_fork_child_hook): Drop malloc_fork_child. * hurd/hurdmalloc.h (_hurd_malloc_fork_prepare, _hurd_malloc_fork_parent, _hurd_malloc_fork_child): Add declarations. * sysdeps/mach/hurd/fork.c (__fork): Call __malloc_fork_lock_parent after locking locks (notably hurd_dtable_lock). Call _hurd_malloc_fork_prepare after that. Call _hurd_malloc_fork_parent before __malloc_fork_unlock_parent and _hurd_malloc_fork_child before __malloc_fork_unlock_child.
* malloc: Manual part of conversion to __libc_lockFlorian Weimer2016-09-211-21/+0
| | | | | This removes the old mutex_t-related definitions from malloc-machine.h, too.
* hurd: Fix adjtime call with OLDDELTA == NULLSvante Signell2016-08-301-0/+4
| | | | | * sysdeps/mach/hurd/adjtime.c (__adjtime): When OLDDELTA is NULL, make it point to a dumb buffer for RPC to fill it.
* malloc: Simplify static malloc interposition [BZ #20432]Florian Weimer2016-08-261-3/+3
| | | | | | | | Existing interposed mallocs do not define the glibc-internal fork callbacks (and they should not), so statically interposed mallocs lead to link failures because the strong reference from fork pulls in glibc's malloc, resulting in multiple definitions of malloc-related symbols.
* Fix recvmsg returning SIGLOST on PF_LOCAL socketsSamuel Thibault2016-08-091-1/+3
| | | | | | | when msg_name is not NULL. * sysdeps/mach/hurd/recvmsg.c (__libc_recvmsg): Cope with aport being MACH_PORT_NULL.
* elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h>Florian Weimer2016-06-201-11/+1
| | | | | Identical definitions of dtv_t and TLS_DTV_UNALLOCATED were repeated for all architectures using DTVs.
* hurd: disable ifunc for nowSamuel Thibault2016-05-302-0/+8
| | | | | | * sysdeps/mach/hurd/configure.ac (libc_cv_ld_gnu_indirect_function): Set to no. * sysdeps/mach/hurd/configure: Refresh.
* hurd: fix _hurd_self_sigstate reference from ____longjmp_chkSamuel Thibault2016-05-301-1/+6
| | | | | * sysdeps/mach/hurd/i386/____longjmp_chk.S (____longjmp_chk) [PIC]: Use PLT entry for calling _hurd_self_sigstate.
* Make padding in struct sockaddr_storage explicit [BZ #20111]Florian Weimer2016-05-231-4/+4
| | | | | | | | | | This avoids aliasing issues with GCC 6 in -fno-strict-aliasing mode. (With implicit padding, not all data is copied.) This change makes it explicit that struct sockaddr_storage is only 126 bytes large on m68k (unlike elsewhere, where we end up with the requested 128 bytes). The new test case makes sure that this does not happen on other architectures.
* Fix gprof timingSamuel Thibault2016-04-191-1/+1
| | | | | * sysdeps/mach/hurd/profil.c (__profile_frequency): Return tick frequency instead of tick length in us.
* hurd: fix profiling short-living processesSamuel Thibault2016-04-191-2/+3
| | | | | | * sysdeps/mach/hurd/profil.c (update_waiter): Initialize profil_reply_port. (profile_waiter): Do not initialize profil_reply_port.
* malloc: Remove unused definitions of thread_atfork, thread_atfork_staticFlorian Weimer2016-04-141-8/+0
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* malloc: Run fork handler as late as possible [BZ #19431]Florian Weimer2016-04-141-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, a thread M invoking fork would acquire locks in this order: (M1) malloc arena locks (in the registered fork handler) (M2) libio list lock A thread F invoking flush (NULL) would acquire locks in this order: (F1) libio list lock (F2) individual _IO_FILE locks A thread G running getdelim would use this order: (G1) _IO_FILE lock (G2) malloc arena lock After executing (M1), (F1), (G1), none of the threads can make progress. This commit changes the fork lock order to: (M'1) libio list lock (M'2) malloc arena locks It explicitly encodes the lock order in the implementations of fork, and does not rely on the registration order, thus avoiding the deadlock.
* Remove union wait [BZ #19613]Florian Weimer2016-04-141-2/+1
| | | | | | | The overloading approach in the W* macros was incompatible with integer expressions of a type different from int. Applications using union wait and these macros will have to migrate to the POSIX-specified int status type.
* hurd: Add c++-types expected resultSamuel Thibault2016-03-201-0/+67
| | | | * sysdeps/mach/hurd/i386/c++-types.data: New file.
* hurd: Allow inlining IO locksSamuel Thibault2016-03-201-0/+3
| | | | * sysdeps/mach/hurd/libc-lock.h (_IO_lock_inexpensive): Define to 1.
* hurd: Do not hide rtld symbols which need to be preemptedSamuel Thibault2016-03-201-0/+22
| | | | | | | | | * sysdeps/generic/dl-fcntl.h: New file, adds attribute_hidden to __open and __fcntl. * sysdeps/mach/hurd/dl-fcntl.h: New file, adds attribute_hidden to __fcntl only. * include/fcntl.h [IS_IN (rtld)]: Include <dl-fcntl.h> instead of adding attribute_hidden to __open and __fcntl.
* hurd: Break errnos.d / libc-modules.h dependency loopSamuel Thibault2016-03-201-2/+4
| | | | | | | | Generating errnos.d does not actually need libc-modules.h. * sysdeps/mach/hurd/Makefile ($(common-objpfx)errnos.d): Strip "-include $(common-objpfx)libc-modules.h" from CPPFLAGS, and do not depend on libc-modules.h,
* Fix hurd buildSamuel Thibault2016-03-161-1/+1
| | | | | | | | * sysdeps/mach/hurd/openat.c (__openat): Add missing ellipsis. * resolv/gai_sigqueue.c (__gai_sigqueue): Add missing internal_function qualifier. * /rt/aio_sigqueue.c (__aio_sigqueue): Add missing attribute_hidden internal_function qualifiers.
* Update copyright dates committed in 2016H.J. Lu2016-01-062-2/+2
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* Mark internal unistd functions hidden in ld.soH.J. Lu2016-01-061-0/+28
| | | | | | | | | | | | Since internal unistd functions are only used internally in ld.so and libc.so, they can be made hidden. __close, __getcwd, __getpid, __libc_read and __libc_write can't be hidden in ld.so on Hurd since they will be preempted by the ones in libc.so after bootstrap. [BZ #19122] * include/unistd.h [IS_IN (rtld)]: Include <dl-unistd.h>. * sysdeps/generic/dl-unistd.h: New file. * sysdeps/mach/hurd/dl-unistd.h: Likewise.
* Mark ld.so internal mmap functions hidden in ld.soH.J. Lu2016-01-061-0/+23
| | | | | | | | | | | Since ld.so internal mmap functions are only used internally in ld.so, they can be made hidden. Don't hide __mmap on Hurd, since __mmap in ld.so will be preempted by the one in libc.so after bootstrap. [BZ #19122] * include/sys/mman.h [IS_IN (rtld)]: Include <dl-mman.h>. * sysdeps/generic/dl-mman.h: New file. * sysdeps/mach/hurd/dl-mman.h: Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-04253-253/+253
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* Add __CPU_MASK_TYPE for __cpu_maskH.J. Lu2015-12-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since x86-64 and x32 use the same set of sched_XXX system call interface: [hjl@gnu-6 linux-stable]$ grep sched_ arch/x86/entry/syscalls/syscall_64.tbl 24 common sched_yield sys_sched_yield 142 common sched_setparam sys_sched_setparam 143 common sched_getparam sys_sched_getparam 144 common sched_setscheduler sys_sched_setscheduler 145 common sched_getscheduler sys_sched_getscheduler 146 common sched_get_priority_max sys_sched_get_priority_max 147 common sched_get_priority_min sys_sched_get_priority_min 148 common sched_rr_get_interval sys_sched_rr_get_interval 203 common sched_setaffinity sys_sched_setaffinity 204 common sched_getaffinity sys_sched_getaffinity 314 common sched_setattr sys_sched_setattr 315 common sched_getattr sys_sched_getattr [hjl@gnu-6 linux-stable]$ __cpu_mask should be unsigned long long, instead of unsigned long, for x32. This patch adds __CPU_MASK_TYPE so that each architecture can define the proper type for __cpu_mask. [BZ #19313] * bits/typesizes.h (__CPU_MASK_TYPE): New. * sysdeps/mach/hurd/bits/typesizes.h (__CPU_MASK_TYPE): Likewise. * sysdeps/nacl/bits/typesizes.h (__CPU_MASK_TYPE): Likewise. * sysdeps/unix/sysv/linux/alpha/bits/typesizes.h (__CPU_MASK_TYPE): Likewise. * sysdeps/unix/sysv/linux/generic/bits/typesizes.h (__CPU_MASK_TYPE): Likewise. * sysdeps/unix/sysv/linux/s390/bits/typesizes.h (__CPU_MASK_TYPE): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/typesizes.h (__CPU_MASK_TYPE): Likewise. * sysdeps/unix/sysv/linux/x86/bits/typesizes.h (__CPU_MASK_TYPE): * sysdeps/unix/sysv/linux/bits/sched.h (__cpu_mask): Replace unsigned long int with __CPU_MASK_TYPE.
* hurd: Make mmap64 use vm_offset_t for overflow checkSamuel Thibault2015-11-291-0/+47
| | | | | | | The RPC interface used by mmap uses the unsigned vm_offset_t, not the signed off_t, so 32bit bigger than 2GiB values are fine actually. * sysdeps/mach/hurd/mmap64.c: New file.
* hurd: install correct number of send rights on forkThomas Schwinge2015-11-291-5/+1
| | | | | * sysdeps/mach/hurd/fork.c (__fork): Install correct number of send rights for its main user thread in NEWTASK.
* hurd: Initialize __libc_stack_end for hidden supportSamuel Thibault2015-11-251-1/+1
| | | | | * sysdeps/mach/hurd/dl-sysdep.c (__libc_stack_end): Initialize to get into initialized data instead of common.
* Do not add relro attribute to __libc_stack_endSamuel Thibault2015-11-251-1/+1
| | | | | | It does not actually work yet * sysdeps/mach/hurd/dl-sysdep.c (__libc_stack_end): Remove relro attribute.
* Revert not defining NO_HIDDEN on hurdSamuel Thibault2015-11-252-0/+6
| | | | | * sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Define. * sysdeps/mach/hurd/configure: Regenerate.
* Fix hurd build with hidden supportSamuel Thibault2015-11-259-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | * hurd/sigunwind.c (_hurdsig_longjmp_from_handler): Destroy reply port of interrupted RPC instead of restoring it. * sysdeps/i386/setjmp.S (__sigsetjmp): Add hidden_def. * sysdeps/mach/hurd/accept4.c (__libc_accept4): Remove libc_hidden_def. * sysdeps/mach/hurd/dl-sysdep.c (__libc_stack_end): Add relro attribute, define rtld_hidden_data_def. * sysdeps/mach/hurd/fxstatat64.c (__fxstatat64): Add libc_hidden_def. * sysdeps/mach/hurd/if_index.c (__if_freenameindex): Add libc_hidden_def. (if_freenameindex): Add libc_hidden_weak. (if_nameindex): Add libc_hidden_weak. * sysdeps/mach/hurd/open.c (_open64): Rename libc_hidden_weak into __open64. * sysdeps/mach/hurd/sigwait.c (__sigwait): Add libc_hidden_def. * sysdeps/mach/hurd/xmknodat.c (__xmknodat): Add libc_hidden_def. * sysdeps/mach/nanosleep.c: Include <time.h> (__nanosleep): Rename to __libc_nanosleep. (__nanosleep): Add weak_alias. (nanosleep): Update alias. * sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not define. * sysdeps/mach/hurd/configure: Regenerate.
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