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This patch uses posix_spawn on system implementation. On Linux this has
the advantage of much lower memory consumption (usually 32 Kb minimum for
the mmap stack area).
Although POSIX does not require, glibc system implementation aims to be
thread and cancellation safe. The cancellation code is moved to generic
implementation and enabled iff SIGCANCEL is defined (similar on how the
cancellation handler is enabled on nptl-init.c).
Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Use
__sigismember instead of sigismember.
* sysdeps/posix/system.c [SIGCANCEL] (cancel_handler_args,
cancel_handler): New definitions.
(CLEANUP_HANDLER, CLEANUP_RESET): Likewise.
(DO_LOCK, DO_UNLOCK, INIT_LOCK, ADD_REF, SUB_REF): Remove.
(do_system): Use posix_spawn instead of fork and execl and remove
reentracy code.
* sysdeps/generic/not-errno.h (__kill_noerrno): New prototype.
* sysdeps/unix/sysv/linux/not-errno.h (__kill_noerrno): Likewise.
* sysdeps/unix/sysv/linux/ia64/system.c: Remove file.
* sysdeps/unix/sysv/linux/s390/system.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/system.c: Likewise.
* sysdeps/unix/sysv/linux/system.c: Likewise.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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Now that files using __ASSUME_* macros have been made by
<https://sourceware.org/ml/libc-alpha/2014-06/msg00543.html> to
include <kernel-features.h> directly, any include from a file not
using __ASSUME_* macros can safely be removed (as there will no longer
be some other file relying on indirect inclusion via a header from
which the include is being removed).
This patch removes such unnecessary kernel-features.h includes.
Tested x86_64 that disassembly of installed shared libraries is
unchanged by this patch, except for line numbers in calls to
__assert_fail from libc.so and ld.so.
2014-06-23 Joseph Myers <joseph@codesourcery.com>
* nptl/createthread.c: Don't include kernel-features.h.
* nptl/pthread_cancel.c: Likewise.
* nptl/pthread_condattr_setclock.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/pt-raise.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/pthread_getcpuclockid.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/pthread_kill.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/raise.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/s390/s390-32/pt-vfork.S: Likewise.
* nptl/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
* nptl/sysdeps/unix/sysv/linux/s390/s390-64/pt-vfork.S: Likewise.
* nptl/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
* nptl/sysdeps/unix/sysv/linux/timer_create.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/timer_delete.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/timer_getoverr.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/timer_gettime.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/timer_routines.c: Likewise.
* nptl/sysdeps/unix/sysv/linux/timer_settime.c: Likewise.
* nscd/gai.c: Likewise.
* nss/nss_db/db-open.c: Likewise.
* sysdeps/generic/ldsodefs.h: Likewise.
* sysdeps/sh/nptl/tls.h: Likewise.
* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/aarch64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/adjtime.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/xstatconv.h: Likewise.
* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/check_pf.c: Likewise.
* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: Likewise.
* sysdeps/unix/sysv/linux/clock_getres.c: Likewise.
* sysdeps/unix/sysv/linux/clock_gettime.c: Likewise.
* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.
* sysdeps/unix/sysv/linux/clock_settime.c: Likewise.
* sysdeps/unix/sysv/linux/dl-execstack.c: Likewise.
* sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise.
* sysdeps/unix/sysv/linux/dl-sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/generic/futimesat.c: Likewise.
* sysdeps/unix/sysv/linux/generic/poll.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/fcntl.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev64.c: Likewise.
* sysdeps/unix/sysv/linux/getcwd.c: Likewise.
* sysdeps/unix/sysv/linux/getpagesize.c: Likewise.
* sysdeps/unix/sysv/linux/getsysstats.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fxstat.c: Likewise.
* sysdeps/unix/sysv/linux/i386/lxstat.c: Likewise.
* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/i386/xstat.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/system.c: Likewise.
* sysdeps/unix/sysv/linux/if_index.c: Likewise.
* sysdeps/unix/sysv/linux/ifaddrs.c: Likewise.
* sysdeps/unix/sysv/linux/ifreq.c: Likewise.
* sysdeps/unix/sysv/linux/ldsodefs.h: Likewise.
* sysdeps/unix/sysv/linux/lutimes.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/microblaze/nptl/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/accept4.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/recvmmsg.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/sendmmsg.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pread.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/mmap64.c: Likewise.
* sysdeps/unix/sysv/linux/netlinkaccess.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/pread.c: Likewise.
* sysdeps/unix/sysv/linux/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/prof-freq.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise.
* sysdeps/unix/sysv/linux/s390/system.c: Likewise.
* sysdeps/unix/sysv/linux/sh/pread.c: Likewise.
* sysdeps/unix/sysv/linux/sh/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/sh/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sigpending.c: Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/xstatconv.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/system.c: Likewise.
* sysdeps/unix/sysv/linux/syslog.c: Likewise.
* sysdeps/unix/sysv/linux/system.c: Likewise.
* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
* sysdeps/unix/sysv/linux/timespec_get.c: Likewise.
* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
* sysdeps/unix/sysv/linux/ttyname_r.c: Likewise.
* sysdeps/unix/sysv/linux/utimensat.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/xstatconv.h: Likewise.
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2003-03-13 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/ia64/sysdep.h (BREAK_INSN_1, BREAK_INSN,
ASM_OUTARGS_0, ASM_OUTARGS_1, ASM_OUTARGS_2, ASM_OUTARGS_3,
ASM_OUTARGS_4, ASM_OUTARGS_5, ASM_OUTARGS_6): Define.
(INTERNAL_SYSCALL, INLINE_SYSCALL): Use it. Make syscall arguments
clobbered by the syscall.
(ASM_ARGS_1, ASM_ARGS_2, ASM_ARGS_3, ASM_ARGS_4, ASM_ARGS_5,
ASM_ARGS_6): Change constraints from r to index of corresponding
output register.
* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Swap
ptid and ctid to match kernel.
* sysdeps/unix/sysv/linux/ia64/system.c (FORK): Likewise.
* sysdeps/powerpc/powerpc64/elf/configure.in: Remove
* sysdeps/powerpc/powerpc64/elf/configure: Regenerated.
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* sysdeps/unix/sysv/linux/ia64/system.c: New file.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_CLONE_THREAD_FLAGS): Define for IA-64 and s390* with
kernel >= 2.5.64.
2003-03-11 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Don't clobber R7.
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