GLibC

glibc:hjl/i386/master

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hjl/i386/master

Last commit made on 2015-10-19

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Branch information

Name:: hjl/i386/master

Repository:: lp:glibc

Recent commits

6f6e3ee... by "H.J. Lu" <email address hidden> on 2015-08-21

Avoid reading errno in syscall implementations

Reading errno is expensive for x86 PIC. With INTERNAL_SYSCALL,
INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO and
INLINE_SYSCALL_ERROR_RETURN_VALUE, we can avoid reading errno.

There are no code changes on x86-64. On i686, libc.so sizes in bytes
show:

text data bss dec
after 1748495 11380 11132 1771007
before 1748403 11380 11132 1770915

* sysdeps/unix/sysv/linux/eventfd.c (eventfd): Use
INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P and
INTERNAL_SYSCALL_ERRNO to avoid reading errno.
* sysdeps/unix/sysv/linux/fstatfs64.c (__fstatfs64): Likewise.
* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64):
Likewise.
* sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64):
Likewise.
* sysdeps/unix/sysv/linux/signalfd.c (signalfd): Likewise.
* sysdeps/unix/sysv/linux/statfs64.c (__statfs64): Likewise.

2028f49... by Geoffrey Thomas on 2015-10-19

pt_chown: Clear any signal mask inherited from the parent process.

If grantpt() is called from a thread that is masking signals (for
instance, from a program using signalfd or using a dedicated
signal-handling thread), then that mask will get inherited to pt_chown.
This means that signals like SIGINT will not interrup pt_chown, so if it
hangs (e.g., because getgrnam("tty") hangs on a remote name service),
Ctrl-C will terminate the parent process but leave pt_chown around. Since
it's setuid, it's hard to kill any other way.

It is safe for pt_chown to unmask all signals, because grantpt() can be
(and usually is) called from an unprivileged process with all signals
unmasked.

361468f... by Joseph Myers <email address hidden> on 2015-10-19

Remove -fgnu89-inline configure test.

There is a configure test for -fgnu89-inline. This option was added
in GCC 4.2, so the test is obsolete; this patch removes it.

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* configure.ac (libc_cv_gnu89_inline): Remove configure test.
* configure: Regenerated.
* config.make.in (gnu89-inline-CFLAGS): Remove variable.
* Makeconfig (CFLAGS): Use -fgnu89-inline instead of
$(gnu89-inline-CFLAGS).

210dd78... by Joseph Myers <email address hidden> on 2015-10-19

Remove .weak, .weakext configure tests.

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.

bd2260a... by Joseph Myers <email address hidden> on 2015-10-19

Convert 231 sysdeps function definitions to prototype style.

This mostly automatically-generated patch converts 231 sysdeps
function definitions in glibc from old-style K&R to prototype-style.

For __aio_sigqueue and __gai_sigqueue I had to add internal_function
to the definitions as noted by Florian in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00595.html> to keep
the functions compiling on x86 after conversion to prototype
definitions. Otherwise, the patch is automatically generated with all
the same exclusions and caveats as in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00594.html> except
that it's a patch for sysdeps files.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch). Also tested for arm,
mips64 and powerpc32 that installed stripped shared libraries are
unchanged by the patch.

* sysdeps/arm/backtrace.c (__backtrace): Convert to
prototype-style function definition.
* sysdeps/i386/backtrace.c (__backtrace): Likewise.
* sysdeps/i386/ffs.c (__ffs): Likewise.
* sysdeps/i386/i686/ffs.c (__ffs): Likewise.
* sysdeps/ia64/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/ia64/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
Likewise.
* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l):
Likewise.
* sysdeps/m68k/ffs.c (__ffs): Likewise.
* sysdeps/m68k/m680x0/fpu/e_acos.c (FUNC): Likewise.
* sysdeps/m68k/m680x0/fpu/e_fmod.c (FUNC): Likewise.
* sysdeps/mach/adjtime.c (__adjtime): Likewise.
* sysdeps/mach/gettimeofday.c (__gettimeofday): Likewise.
* sysdeps/mach/hurd/_exit.c (_exit): Likewise.
* sysdeps/mach/hurd/access.c (__access): Likewise.
* sysdeps/mach/hurd/adjtime.c (__adjtime): Likewise.
* sysdeps/mach/hurd/chdir.c (__chdir): Likewise.
* sysdeps/mach/hurd/chmod.c (__chmod): Likewise.
* sysdeps/mach/hurd/chown.c (__chown): Likewise.
* sysdeps/mach/hurd/cthreads.c (cthread_keycreate): Likewise.
(cthread_getspecific): Likewise.
(cthread_setspecific): Likewise.
(__libc_getspecific): Likewise.
* sysdeps/mach/hurd/euidaccess.c (__euidaccess): Likewise.
* sysdeps/mach/hurd/faccessat.c (faccessat): Likewise.
* sysdeps/mach/hurd/fchdir.c (__fchdir): Likewise.
* sysdeps/mach/hurd/fchmod.c (__fchmod): Likewise.
* sysdeps/mach/hurd/fchmodat.c (fchmodat): Likewise.
* sysdeps/mach/hurd/fchown.c (__fchown): Likewise.
* sysdeps/mach/hurd/fchownat.c (fchownat): Likewise.
* sysdeps/mach/hurd/flock.c (__flock): Likewise.
* sysdeps/mach/hurd/fsync.c (fsync): Likewise.
* sysdeps/mach/hurd/ftruncate.c (__ftruncate): Likewise.
* sysdeps/mach/hurd/getgroups.c (__getgroups): Likewise.
* sysdeps/mach/hurd/gethostname.c (__gethostname): Likewise.
* sysdeps/mach/hurd/getitimer.c (__getitimer): Likewise.
* sysdeps/mach/hurd/getlogin_r.c (__getlogin_r): Likewise.
* sysdeps/mach/hurd/getpgid.c (__getpgid): Likewise.
* sysdeps/mach/hurd/getrusage.c (__getrusage): Likewise.
* sysdeps/mach/hurd/getsockname.c (__getsockname): Likewise.
* sysdeps/mach/hurd/group_member.c (__group_member): Likewise.
* sysdeps/mach/hurd/isatty.c (__isatty): Likewise.
* sysdeps/mach/hurd/lchown.c (__lchown): Likewise.
* sysdeps/mach/hurd/link.c (__link): Likewise.
* sysdeps/mach/hurd/linkat.c (linkat): Likewise.
* sysdeps/mach/hurd/listen.c (__listen): Likewise.
* sysdeps/mach/hurd/mkdir.c (__mkdir): Likewise.
* sysdeps/mach/hurd/mkdirat.c (mkdirat): Likewise.
* sysdeps/mach/hurd/openat.c (__openat): Likewise.
* sysdeps/mach/hurd/poll.c (__poll): Likewise.
* sysdeps/mach/hurd/readlink.c (__readlink): Likewise.
* sysdeps/mach/hurd/readlinkat.c (readlinkat): Likewise.
* sysdeps/mach/hurd/recv.c (__recv): Likewise.
* sysdeps/mach/hurd/rename.c (rename): Likewise.
* sysdeps/mach/hurd/renameat.c (renameat): Likewise.
* sysdeps/mach/hurd/revoke.c (revoke): Likewise.
* sysdeps/mach/hurd/rewinddir.c (__rewinddir): Likewise.
* sysdeps/mach/hurd/rmdir.c (__rmdir): Likewise.
* sysdeps/mach/hurd/seekdir.c (seekdir): Likewise.
* sysdeps/mach/hurd/send.c (__send): Likewise.
* sysdeps/mach/hurd/setdomain.c (setdomainname): Likewise.
* sysdeps/mach/hurd/setegid.c (setegid): Likewise.
* sysdeps/mach/hurd/seteuid.c (seteuid): Likewise.
* sysdeps/mach/hurd/setgid.c (__setgid): Likewise.
* sysdeps/mach/hurd/setgroups.c (setgroups): Likewise.
* sysdeps/mach/hurd/sethostid.c (sethostid): Likewise.
* sysdeps/mach/hurd/sethostname.c (sethostname): Likewise.
* sysdeps/mach/hurd/setlogin.c (setlogin): Likewise.
* sysdeps/mach/hurd/setpgid.c (__setpgid): Likewise.
* sysdeps/mach/hurd/setregid.c (__setregid): Likewise.
* sysdeps/mach/hurd/setreuid.c (__setreuid): Likewise.
* sysdeps/mach/hurd/settimeofday.c (__settimeofday): Likewise.
* sysdeps/mach/hurd/setuid.c (__setuid): Likewise.
* sysdeps/mach/hurd/shutdown.c (shutdown): Likewise.
* sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise.
* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
* sysdeps/mach/hurd/sigpending.c (sigpending): Likewise.
* sysdeps/mach/hurd/sigprocmask.c (__sigprocmask): Likewise.
* sysdeps/mach/hurd/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/mach/hurd/socket.c (__socket): Likewise.
* sysdeps/mach/hurd/symlink.c (__symlink): Likewise.
* sysdeps/mach/hurd/symlinkat.c (symlinkat): Likewise.
* sysdeps/mach/hurd/telldir.c (telldir): Likewise.
* sysdeps/mach/hurd/truncate.c (__truncate): Likewise.
* sysdeps/mach/hurd/umask.c (__umask): Likewise.
* sysdeps/mach/hurd/unlink.c (__unlink): Likewise.
* sysdeps/mach/hurd/unlinkat.c (unlinkat): Likewise.
* sysdeps/mips/mips64/__longjmp.c (__longjmp): Likewise.
* sysdeps/posix/alarm.c (alarm): Likewise.
* sysdeps/posix/cuserid.c (cuserid): Likewise.
* sysdeps/posix/dirfd.c (dirfd): Likewise.
* sysdeps/posix/dup.c (__dup): Likewise.
* sysdeps/posix/dup2.c (__dup2): Likewise.
* sysdeps/posix/euidaccess.c (euidaccess): Likewise.
(main): Likewise.
* sysdeps/posix/flock.c (__flock): Likewise.
* sysdeps/posix/fpathconf.c (__fpathconf): Likewise.
* sysdeps/posix/getcwd.c (__getcwd): Likewise.
* sysdeps/posix/gethostname.c (__gethostname): Likewise.
* sysdeps/posix/gettimeofday.c (__gettimeofday): Likewise.
* sysdeps/posix/isatty.c (__isatty): Likewise.
* sysdeps/posix/killpg.c (killpg): Likewise.
* sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise.
* sysdeps/posix/mkfifoat.c (mkfifoat): Likewise.
* sysdeps/posix/raise.c (raise): Likewise.
* sysdeps/posix/remove.c (remove): Likewise.
* sysdeps/posix/rename.c (rename): Likewise.
* sysdeps/posix/rewinddir.c (__rewinddir): Likewise.
* sysdeps/posix/seekdir.c (seekdir): Likewise.
* sysdeps/posix/sigblock.c (__sigblock): Likewise.
* sysdeps/posix/sigignore.c (sigignore): Likewise.
* sysdeps/posix/sigintr.c (siginterrupt): Likewise.
* sysdeps/posix/signal.c (__bsd_signal): Likewise.
* sysdeps/posix/sigset.c (sigset): Likewise.
* sysdeps/posix/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/posix/sysconf.c (__sysconf): Likewise.
* sysdeps/posix/sysv_signal.c (__sysv_signal): Likewise.
* sysdeps/posix/time.c (time): Likewise.
* sysdeps/posix/ttyname.c (getttyname): Likewise.
(ttyname): Likewise.
* sysdeps/posix/ttyname_r.c (__ttyname_r): Likewise.
* sysdeps/posix/utime.c (utime): Likewise.
* sysdeps/powerpc/fpu/s_isnan.c (__isnan): Likewise.
* sysdeps/powerpc/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/powerpc/nptl/pthread_spin_trylock.c
(pthread_spin_trylock): Likewise.
* sysdeps/pthread/aio_error.c (aio_error): Likewise.
* sysdeps/pthread/aio_read.c (aio_read): Likewise.
* sysdeps/pthread/aio_read64.c (aio_read64): Likewise.
* sysdeps/pthread/aio_write.c (aio_write): Likewise.
* sysdeps/pthread/aio_write64.c (aio_write64): Likewise.
* sysdeps/pthread/flockfile.c (__flockfile): Likewise.
* sysdeps/pthread/ftrylockfile.c (__ftrylockfile): Likewise.
* sysdeps/pthread/funlockfile.c (__funlockfile): Likewise.
* sysdeps/pthread/timer_create.c (timer_create): Likewise.
* sysdeps/pthread/timer_getoverr.c (timer_getoverrun): Likewise.
* sysdeps/pthread/timer_gettime.c (timer_gettime): Likewise.
* sysdeps/s390/ffs.c (__ffs): Likewise.
* sysdeps/s390/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/s390/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
Likewise.
* sysdeps/sh/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/sparc/nptl/pthread_barrier_destroy.c
(pthread_barrier_destroy): Likewise.
* sysdeps/sparc/nptl/pthread_barrier_wait.c
(__pthread_barrier_wait): Likewise.
* sysdeps/sparc/sparc32/e_sqrt.c (__ieee754_sqrt): Likewise.
* sysdeps/sparc/sparc32/pthread_barrier_wait.c
(__pthread_barrier_wait): Likewise.
* sysdeps/sparc/sparc32/sem_init.c (__old_sem_init): Likewise.
* sysdeps/tile/memcmp.c (memcmp_common_alignment): Likewise.
(memcmp_not_common_alignment): Likewise.
(MEMCMP): Likewise.
* sysdeps/tile/wordcopy.c (_wordcopy_fwd_aligned): Likewise.
(_wordcopy_fwd_dest_aligned): Likewise.
(_wordcopy_bwd_aligned): Likewise.
(_wordcopy_bwd_dest_aligned): Likewise.
* sysdeps/unix/bsd/ftime.c (ftime): Likewise.
* sysdeps/unix/bsd/gtty.c (gtty): Likewise.
* sysdeps/unix/bsd/stty.c (stty): Likewise.
* sysdeps/unix/bsd/tcflow.c (tcflow): Likewise.
* sysdeps/unix/bsd/tcflush.c (tcflush): Likewise.
* sysdeps/unix/bsd/tcgetattr.c (__tcgetattr): Likewise.
* sysdeps/unix/bsd/tcgetpgrp.c (tcgetpgrp): Likewise.
* sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Likewise.
* sysdeps/unix/bsd/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/bsd/tcsetpgrp.c (tcsetpgrp): Likewise.
* sysdeps/unix/bsd/ualarm.c (ualarm): Likewise.
* sysdeps/unix/bsd/wait3.c (__wait3): Likewise.
* sysdeps/unix/getlogin_r.c (__getlogin_r): Likewise.
* sysdeps/unix/sockatmark.c (sockatmark): Likewise.
* sysdeps/unix/stime.c (stime): Likewise.
* sysdeps/unix/sysv/linux/_exit.c (_exit): Likewise.
* sysdeps/unix/sysv/linux/aio_sigqueue.c (__aio_sigqueue):
Likewise. Use internal_function.
* sysdeps/unix/sysv/linux/arm/sigaction.c (__libc_sigaction):
Convert to prototype-style function definition.
* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise.
* sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise.
* sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Likewise.
* sysdeps/unix/sysv/linux/gai_sigqueue.c (__gai_sigqueue):
Likewise. Use internal_function.
* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Convert to
prototype-style function definition
* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
Likewise.
(__getlogin_r): Likewise.
* sysdeps/unix/sysv/linux/getpt.c (__posix_openpt): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c
(__pthread_cond_broadcast): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c
(__pthread_cond_destroy): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c
(__pthread_cond_init): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c
(__pthread_cond_signal): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
(__pthread_cond_wait): Likewise.
* sysdeps/unix/sysv/linux/i386/getmsg.c (getmsg): Likewise.
* sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise.
* sysdeps/unix/sysv/linux/ia64/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sigprocmask.c (__sigprocmask):
Likewise.
* sysdeps/unix/sysv/linux/mips/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/msgget.c (msgget): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
(__ftruncate64): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
(truncate64): Likewise.
* sysdeps/unix/sysv/linux/pt-raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/pthread_getcpuclockid.c
(pthread_getcpuclockid): Likewise.
* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_sigmask.c (pthread_sigmask):
Likewise.
* sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
Likewise.
* sysdeps/unix/sysv/linux/raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c
(__libc_sigaction): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c
(__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/semget.c (semget): Likewise.
* sysdeps/unix/sysv/linux/semop.c (semop): Likewise.
* sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64): Likewise.
* sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise.
* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Likewise.
* sysdeps/unix/sysv/linux/shmget.c (shmget): Likewise.
* sysdeps/unix/sysv/linux/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/sigpending.c (sigpending): Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Likewise.
* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c
(__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/speed.c (cfgetospeed): Likewise.
(cfgetispeed): Likewise.
(cfsetospeed): Likewise.
(cfsetispeed): Likewise.
* sysdeps/unix/sysv/linux/tcflow.c (tcflow): Likewise.
* sysdeps/unix/sysv/linux/tcflush.c (tcflush): Likewise.
* sysdeps/unix/sysv/linux/tcgetattr.c (__tcgetattr): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/sysv/linux/time.c (time): Likewise.
* sysdeps/unix/sysv/linux/timer_create.c (timer_create): Likewise.
* sysdeps/unix/sysv/linux/timer_delete.c (timer_delete): Likewise.
* sysdeps/unix/sysv/linux/timer_getoverr.c (timer_getoverrun):
Likewise.
* sysdeps/unix/sysv/linux/timer_gettime.c (timer_gettime):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigprocmask.c (__sigprocmask):
Likewise.
* sysdeps/x86_64/backtrace.c (__backtrace): Likewise.

4e16650... by Florian Weimer on 2015-10-17