We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date. Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.
Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions. These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.
The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively. These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:
https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dchttps://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
During critical sections, signal handling is deferred and thus RPCs return
EINTR, even if SA_RESTART is set. We thus have to restart the whole critical
section in that case.
This also adds HURD_CRITICAL_UNLOCK in the cases where one wants to
break the section in the middle.
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
Instead of having the arch-specific trampoline setup code detect whether
preemption happened or not, we'd rather pass it the sigaction. In the
future, this may also allow to change sa_flags from post_signal().
This change is required in order to correctly release per-thread
resources. Directly reusing the threading library reference isn't
possible since the sigstate is also used early in the main thread,
before threading is initialized.
* hurd/hurd/signal.h (_hurd_self_sigstate): Drop thread reference after
calling _hurd_thread_sigstate.
(_hurd_critical_section_lock): Likewise.
* hurd/hurdsig.c (_hurd_thread_sigstate): Add a reference on the thread.
(_hurd_sigstate_delete): Drop thread reference.
SA_SIGINFO is actually just another way of expressing what we were
already passing over with struct sigcontext. This just introduces the
SIGINFO interface and fixes the posix values when that interface is
requested by the application.
We shall not overflow the size of the description parameter. This makes
describe_number and describe_port behave like strpcpy (except for not filling
all the end of buffer with zeroes) and _S_msg_report_wait use series of
stpncpy-like call. If we were to overflow, we can now detect it and
return ENOMEM.
strcpy cannot be used with overlapping buffer, we have to use memmove
instead. strcpy also cannot be safely used when the destination buffer
is smaller that the source, we need to use strncpy to truncate the
source if needed.
Notifying the proc server is an involved task, and unleashes various signal
handling etc. so we have to do this after e.g. ifunc relocations are
completed.
Since htl does not actually need a stack switch, we can initialize it
like nptl is, avoiding all sorts of startup issues with ifunc.
More precisely, htl defines __pthread_initialize_minimal instead of the
elder _cthread_init_routine. We can then drop the stack switching dances.
Making the brk start exactly at the end of the main application binary was
requiring to get it through the _end symbol, which does not work any more
with recent toolchains, and actually produces in libc.so a confusing
external _end symbol that produces odd results, see
https://sourceware.org/bugzilla/show_bug.cgi?id=23499
Trying to do so is quite outdated anyway with the tendency for address
randomization.
Using _end was also allowing to include the main binary data within
the RLIMIT_DATA, but this also seems outdated with dynamic library
loading, and nowadays' memory consumption via malloc and mmap rather than
statically-allocated data.
This adds a BRK_START macro in <vm_param.h> that just tells where we
want to start the brk, and thus removes the _end symbol.
* sysdeps/mach/hurd/i386/vm_param.h: New file.
* sysdeps/mach/hurd/brk.c: Use BRK_START as brk start instead of _end.
Also ignore __data_start.
* hurd/Versions: Remove _end symbol.
* sysdeps/mach/hurd/i386/libc.abilist: Remove _end symbol.
* hurd/hurdselect.c: Include <sysdep-cancel.h>.
(_hurd_select): Surround call to __mach_msg with enabling async cancel.
* sysdeps/mach/hurd/accept4.c: Include <sysdep-cancel.h>.
(__libc_accept4): Surround call to __socket_accept with enabling async cancel,
and use HURD_DPORT_USE_CANCEL instead of HURD_DPORT_USE.
* sysdeps/mach/hurd/connect.c: Include <sysdep-cancel.h>.
(__connect): Surround call to __file_name_lookup and __socket_connect
with enabling async cancel, and use HURD_DPORT_USE_CANCEL instead of
HURD_DPORT_USE.
* sysdeps/mach/hurd/fdatasync.c: Include <sysdep-cancel.h>.
(fdatasync): Surround call to __file_sync with enabling async cancel, and use
HURD_DPORT_USE_CANCEL instead of HURD_DPORT_USE.
* sysdeps/mach/hurd/fsync.c: Include <sysdep-cancel.h>.
(fsync): Surround call to __file_sync with enabling async cancel, and use
HURD_DPORT_USE_CANCEL instead of HURD_DPORT_USE.
* sysdeps/mach/hurd/ioctl.c: Include <sysdep-cancel.h>.
(__ioctl): When request is TIOCDRAIN, surround call to send_rpc with enabling
async cancel, and use HURD_DPORT_USE_CANCEL instead of HURD_DPORT_USE.
* sysdeps/mach/hurd/msync.c: Include <sysdep-cancel.h>.
(msync): Surround call to __vm_object_sync with enabling async cancel.
* sysdeps/mach/hurd/sigsuspend.c: Include <sysdep-cancel.h>.
(__sigsuspend): Surround call to __mach_msg with enabling async cancel.
* sysdeps/mach/hurd/sigwait.c: Include <sysdep-cancel.h>.
(__sigwait): Surround wait code with enabling async cancel.
* sysdeps/mach/msync.c: Include <sysdep-cancel.h>.
(msync): Surround call to __vm_msync with enabling async cancel.
* sysdeps/mach/sleep.c: Include <sysdep-cancel.h>.
(__sleep): Surround call to __mach_msg with enabling async cancel.
* sysdeps/mach/usleep.c: Include <sysdep-cancel.h>.
(usleep): Surround call to __vm_msync with enabling async cancel.
HURD_*PORT_USE link fd and port with a stack-stored structure, so on
thread cancel we need to cleanup this.
* hurd/fd-cleanup.c: New file.
* hurd/port-cleanup.c (_hurd_port_use_cleanup): New function.
* hurd/Makefile (routines): Add fd-cleanup.
* sysdeps/hurd/include/hurd.h (__USEPORT_CANCEL): New macro.
* sysdeps/hurd/include/hurd/fd.h (_hurd_fd_port_use_data): New
structure.
(_hurd_fd_port_use_cleanup): New prototype.
(HURD_DPORT_USE_CANCEL, HURD_FD_PORT_USE_CANCEL): New macros.
* sysdeps/hurd/include/hurd/port.h (_hurd_port_use_data): New structure.
(_hurd_port_use_cleanup): New prototype.
(HURD_PORT_USE_CANCEL): New macro.
* hurd/hurd/fd.h (HURD_FD_PORT_USE): Also refer to HURD_FD_PORT_USE_CANCEL.
* hurd/hurd.h (__USEPORT): Also refer to __USEPORT_CANCEL.
* hurd/hurd/port.h (HURD_PORT_USE): Also refer to HURD_PORT_USE_CANCEL.
* hurd/fd-read.c (_hurd_fd_read): Call HURD_FD_PORT_USE_CANCEL instead
of HURD_FD_PORT_USE.
* hurd/fd-write.c (_hurd_fd_write): Likewise.
* sysdeps/mach/hurd/send.c (__send): Call HURD_DPORT_USE_CANCEL instead
of HURD_DPORT_USE.
* sysdeps/mach/hurd/sendmsg.c (__libc_sendmsg): Likewise.
* sysdeps/mach/hurd/sendto.c (__sendto): Likewise.
* sysdeps/mach/hurd/recv.c (__recv): Likewise.
* sysdeps/mach/hurd/recvfrom.c (__recvfrom): Likewise.
* sysdeps/mach/hurd/recvmsg.c (__libc_recvmsg): Call __USEPORT_CANCEL
instead of __USEPORT, and HURD_DPORT_USE_CANCEL instead of
HURD_DPORT_USE.
_hurdsig_preemptors and _hurdsig_preempted_set are not ABI symbols,
so do not declare them. HURD_PREEMPT_SIGNAL_P is an implementation
detail, so move it as well.
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
This fixes various build errors due to deprecation warnings.
Fixes commit 02802fafcf
("signal: Deprecate additional legacy signal handling functions").
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
In case the signal arrives before the __mach_msg call, we need to catch
between the sigprocmask call and the __mach_msg call. Let's just reuse
the support for sigsuspend to make the signal send a message that
our __mach_msg call will just receive.
* hurd/hurdselect.c (_hurd_select): Add sigport and ss variables. When
sigmask is not NULL, create a sigport port and register as
ss->suspended. Add it to the portset. When we receive a message on it,
set error to EINTR. Clean up sigport and portset appropriately.
* hurd/hurdsig.c (wake_sigsuspend): Note that pselect also uses it.
This adds _hurd_sigstate_set_global_rcv used by libpthread to enable
POSIX-confirming behavior of signals on a per-thread basis.
This also provides a sigstate destructor _hurd_sigstate_delete, and a
global process signal state, which needs to be locked and check when
global disposition is enabled, thus the addition of _hurd_sigstate_lock
_hurd_sigstate_actions _hurd_sigstate_pending _hurd_sigstate_unlock helpers.
This also updates all the glibc code accordingly.
This also drops support for get_int(INIT_SIGMASK), which did not make sense
any more since we do not have a single signal thread any more.
During fork/spawn, this also reinitializes the child global sigstate's
lock. That cures an issue that would very rarely cause a deadlock in the
child in fork, tries to unlock ss' critical section lock at the end of
fork. This will typically (always?) be observed in /bin/sh, which is not
surprising as that is the foremost caller of fork.
To reproduce an intermediate state, add an endless loop if
_hurd_global_sigstate is locked after __proc_dostop (cast through
volatile); that is, while still being in the fork's parent process.
When that triggers (use the libtool testsuite), the signal thread has
already locked ss (which is _hurd_global_sigstate), and is stuck at
hurdsig.c:685 in post_signal, trying to lock _hurd_siglock (which the
main thread already has locked and keeps locked until after
__task_create). This is the case that ss->thread == MACH_PORT_NULL, that
is, a global signal. In the main thread, between __proc_dostop and
__task_create is the __thread_abort call on the signal thread which would
abort any current kernel operation (but leave ss locked). Later in fork,
in the parent, when _hurd_siglock is unlocked in fork, the parent's
signal thread can proceed and will unlock eventually the global sigstate.
In the client, _hurd_siglock will likewise be unlocked, but the global
sigstate never will be, as the client's signal thread has been configured
to restart execution from _hurd_msgport_receive. Thus, when the child
tries to unlock ss' critical section lock at the end of fork, it will
first lock the global sigstate, will spin trying to lock it, which can
never be successful, and we get our deadlock.
Options seem to be:
* Move the locking of _hurd_siglock earlier in post_signal -- but that
may generally impact performance, if this locking isn't generally
needed anyway?
On the other hand, would it actually make sense to wait here until we
are not any longer in a critical section (which is meant to disable
signal delivery anyway (but not for preempted signals?))?
* Clear the global sigstate in the fork's child with the rationale that
we're anyway restarting the signal thread from a clean state. This
has now been implemented.
Why has this problem not been observed before Jérémie's patches? (Or has
it? Perhaps even more rarely?) In _S_msg_sig_post, the signal is now
posted to a *global receiver thread*, whereas previously it was posted to
the *designated signal-receiving thread*. The latter one was in a
critical section in fork, so didn't try to handle the signal until after
leaving the critical section? (Not completely analyzed and verified.)
Another question is what the signal is that is being received
during/around the time __proc_dostop executes.
This should not change the current behavior, although this fixes a few
minor bugs which were made apparent in the process of global signal
disposition work:
- Split into more functions
- Scope variables more restrictively
- Split out inner functions
- refactor check_pending_signals
- make sigsuspend POSIX-conformant.
- fix uninitialized act value.
The valid_nanoseconds () static inline function has been introduced to
check if nanoseconds value is in the correct range - greater or equal to
zero and less than 1000000000.
The explicit #include <time.h> has been added to files where it was
missing.
The __syscall_slong_t type for ns has been used to avoid issues on x32.
Tested with:
- scripts/build-many-glibcs.py
- make PARALLELMFLAGS="-j12" && make PARALLELMFLAGS="-j12" xcheck on x86_64
This fixes the following:
- On error, poll must not return without polling, including EBADF, and instead
report POLLHUP/POLLERR/POLLNVAL
- Select must report EBADF if some set contains an invalid FD.
The idea is to move error management to after all select calls, in the
poll/select final treatment. The error is instead recorded in a new `error'
field, and a new SELECT_ERROR bit set.
Thanks Svante Signell for the initial version of the patch.
* hurd/hurdselect.c (SELECT_ERROR): New macro.
(_hurd_select):
- Add `error' field to `d' structures array.
- If a poll descriptor is bogus, set EBADF, but continue with a zero
timeout.
- Go through the whole fd_set, not only until _hurd_dtablesize. Return
EBADF there is any bit set above _hurd_dtablesize.
- Do not request io_select on bogus descriptors (SELECT_ERROR).
- On io_select request error, record the error.
- On io_select bogus reply, use EIO error code.
- On io_select bogus or error reply, record the error.
- Do not destroy reply port for bogus FDs.
- On error, make poll set POLLHUP in the EPIPE case, POLLNVAL in the
EBADF case, or else POLLERR.
- On error, make select simulated readiness.
Rely on servers to implement timeouts, so that very short values (including
0) don't make mach_msg return before valid replies can be received. The
purpose of this scheme is to guarantee a full client-server round-trip,
whatever the timeout value.
This change depends on the new io_select_timeout RPC being implemented by
servers.
* hurd/Makefile (user-interfaces): Add io_reply and io_request.
* hurd/hurdselect.c: Include <sys/time.h>, <hurd/io_request.h> and
<limits.h>.
(_hurd_select): Replace the call to __io_select with either
__io_select_request or __io_select_timeout_request, depending on the
timeout. Count the number of ready descriptors (replies for which at
least one type bit is set). Implement the timeout locally when there is
no file descriptor.
The function attempts to optimize this case by performing one IPC system
call with the timeout included among the parameters, but in the absence
of a reply, it will call mach_msg again with the same timeout later,
effectively doubling the total timeout of the select/poll call.
Remove this optimization for the time being.
* hurd/hurdselect.c (_hurd_select): Always call __io_select with no
timeout.
This patch fixes -Wempty-body warnings in Hurd-specific code that show
up building glibc with -Wextra.
Note: there also such warnings on many platforms arising from the
default definition of HP_TIMING_NOW in sysdeps/generic/hp-timing.h,
but no change there is proposed in this patch because of other changes
under discussion in that area that would result in a nonempty
definition.
Tested with build-many-glibcs.py.
* hurd/hurdinit.c (_hurd_init): Use braces around empty body of an
if statement.
* hurd/lookup-at.c (__file_name_lookup_at): When at_flags contains
AT_EMPTY_PATH, call __dir_lookup and __hurd_file_name_lookup_retry
directly instead of __hurd_file_name_lookup.
* hurd/lookup-retry: Include <unistd.h>.
(__hurd_file_name_lookup_retry): Keep a ref on last result in `lastdir'.
Release it on return. Handle "pid" magical lookup retry.
There are a lot more printf variants than there are scanf variants,
and the code for setting up and tearing down their custom FILE
variants around the call to __vf(w)printf is more complicated and
variable. Therefore, I have added _internal versions of all the
v*printf variants, rather than introducing helper routines so that
they can all directly call __vf(w)printf_internal, as was done with
scanf.
As with the scanf changes, in this patch the _internal functions still
look at the environmental mode bits and all callers pass 0 for the
flags parameter.
Several of the affected public functions had _IO_ name aliases that
were not exported (but, in one case, appeared in libio.h anyway);
I was originally planning to leave them as aliases to avoid having
to touch internal callers, but it turns out ldbl_*_alias only work
for exported symbols, so they've all been removed instead. It also
turns out there were hardly any internal callers. _IO_vsprintf and
_IO_vfprintf *are* exported, so those two stick around.
Summary for the changes to each of the affected symbols:
_IO_vfprintf, _IO_vsprintf:
All internal calls removed, thus the internal declarations, as well
as uses of libc_hidden_proto and libc_hidden_def, were also removed.
The external symbol is now exposed via uses of ldbl_strong_alias
to __vfprintf_internal and __vsprintf_internal, respectively.
_IO_vasprintf, _IO_vdprintf, _IO_vsnprintf,
_IO_vfwprintf, _IO_vswprintf,
_IO_obstack_vprintf, _IO_obstack_printf:
All internal calls removed, thus declaration in internal headers
were also removed. They were never exported, so there are no
aliases tying them to the internal functions. I.e.: entirely gone.
__vsnprintf:
Internal calls were always preceded by macros such as
#define __vsnprintf _IO_vsnprintf, and
#define __vsnprintf vsnprintf
The macros were removed and their uses replaced with calls to the
new internal function __vsnprintf_internal. Since there were no
internal calls, the internal declaration was also removed. The
external symbol is preserved with ldbl_weak_alias to ___vsnprintf.
__vfwprintf:
All internal calls converted into calls to __vfwprintf_internal,
thus the internal declaration was removed. The function is now a
wrapper that calls __vfwprintf_internal. The external symbol is
preserved.
__vswprintf:
Similarly, but no external symbol.
__vasprintf, __vdprintf, __vfprintf, __vsprintf:
New internal wrappers. Not exported.
vasprintf, vdprintf, vfprintf, vsprintf, vsnprintf,
vfwprintf, vswprintf,
obstack_vprintf, obstack_printf:
These functions used to be aliases to the respective _IO_* function,
they are now aliases to their respective __* functions.
Tested for powerpc and powerpc64le.
* hurd/hurd/userlink.h (_hurd_userlink_move): New function.
* hurd/hurd/port.h (_hurd_port_move): New function.
* sysdeps/mach/hurd/spawni.c (NEW_ULINK_TABLE): New macro.
(EXPAND_DTABLE): Use NEW_ULINK_TABLE macro for ulink_dtable.
* sysdeps/mach/hurd/i386/intr-msg.h (INTR_MSG_TRAP): Make
_hurd_intr_rpc_msg_about_to global point to start of controlled
assembly snippet. Make it check canceled flag.
* hurd/hurdsig.c (_hurdsig_abort_rpcs): Only mutate thread if it passed
the _hurd_intr_rpc_msg_about_to point.
* hurd/intr-msg.c (_hurd_intr_rpc_mach_msg): Remove comment on mutation
issue, remove cancel flag check.
since we do not actually know whether the RPC was completed or not,
which makes a huge difference for e.g. write(), so better really error
out than letting caller think that the RPC did not happen.
* hurd/intr-msg.c (_hurd_intr_rpc_mach_msg): When the server does not
answer to interrupt_operation, return EIO instead of EINTR.
Seeing a server not able to get interrupted for 3s is not so surprising when
e.g. a lot of writes are happening. 1 minute allows to actually notice the
issue and be able to debug it.
* hurd/hurdsig.c (_hurd_interrupted_rpc_timeout): Set to 60000.
Exec needs that mach_setup_thread does *not* set up TLS since it works on
another task, so we have to split this into mach_setup_tls.
* mach/mach.h (__mach_setup_tls, mach_setup_tls): Add prototypes.
* mach/setup-thread.c (__mach_setup_thread): Move TLS setup to...
(__mach_setup_tls): ... new function.
(mach_setup_tls): New alias.
* hurd/hurdsig.c (_hurdsig_init): Call __mach_setup_tls after
__mach_setup_thread.
* sysdeps/mach/hurd/profil.c (update_waiter): Likewise.
* sysdeps/mach/hurd/setitimer.c (setitimer_locked): Likewise.
* mach/Versions [libc] (mach_setup_tls): Add symbol.
* sysdeps/mach/hurd/i386/libc.abilist (mach_setup_tls): Likewise.
Appending / to the path to be looked up would make us always follow a final
symlink, even with O_NOTRANS (since the final resolution is after the
'/'). In the O_DIRECTORY | O_NOFOLLOW case, we thus have to really open
the node and stat it, which we already do anyway, and check for
directory type.
* hurd/hurdlookup.c (__hurd_file_name_lookup): Do not append '/' to
path when flags contains O_NOFOLLOW.
* hurd/lookup-retry.c (__hurd_file_name_lookup_retry): Return ENOTDIR
if flags contains O_DIRECTORY and the result is a directory.
The error code documented by POSIX for opening a symlink with O_NOFOLLOW
is ELOOP.
Also, if the translator does not expose symlink as a symlink translator but
as a S_IFLNK file, O_NOFOLLOW needs to return ELOOP too.
* hurd/lookup-retry.c (__hurd_file_name_lookup_retry): Return ELOOP
when opening a symlink with O_NOFOLLOW.
* hurd/Makefile (routines): Add hurdlock.
* hurd/Versions (GLIBC_PRIVATE): Added new entry to export the above
interface.
(HURD_CTHREADS_0.3): Remove __libc_getspecific.
* hurd/hurdpid.c: Include <lowlevellock.h>
(_S_msg_proc_newids): Use lll_wait to synchronize.
* hurd/hurdsig.c: (reauth_proc): Use __mutex_lock and __mutex_unlock.
* hurd/setauth.c: Include <hurdlock.h>, use integer for synchronization.
* mach/Makefile (lock-headers): Remove machine-lock.h.
* mach/lock-intern.h: Include <lowlevellock.h> instead of
<machine-lock.h>.
(__spin_lock_t): New type.
(__SPIN_LOCK_INITIALIZER): New macro.
(__spin_lock, __spin_unlock, __spin_try_lock, __spin_lock_locked,
__mutex_init, __mutex_lock_solid, __mutex_unlock_solid, __mutex_lock,
__mutex_unlock, __mutex_trylock): Use lll to implement locks.
* mach/mutex-init.c: Include <lowlevellock.h> instead of <cthreads.h>.
(__mutex_init): Initialize with lll.
* manual/errno.texi (EOWNERDEAD, ENOTRECOVERABLE): New errno values.
* sysdeps/mach/Makefile: Add libmachuser as dependencies for libs
needing lll.
* sysdeps/mach/hurd/bits/errno.h: Regenerate.
* sysdeps/mach/hurd/cthreads.c (__libc_getspecific): Remove function.
* sysdeps/mach/hurd/bits/libc-lock.h: Remove file.
* sysdeps/mach/hurd/setpgid.c: Include <lowlevellock.h>.
(__setpgid): Use lll for synchronization.
* sysdeps/mach/hurd/setsid.c: Likewise with __setsid.
* sysdeps/mach/bits/libc-lock.h: Include <tls.h> and <lowlevellock.h>
instead of <cthreads.h>.
(_IO_lock_inexpensive): New macro
(__libc_lock_recursive_t, __rtld_lock_recursive_t): New structures.
(__libc_lock_self0): New declaration.
(__libc_lock_owner_self): New macro.
(__libc_key_t): Remove type.
(_LIBC_LOCK_INITIALIZER): New macro.
(__libc_lock_define_initialized, __libc_lock_init, __libc_lock_fini,
__libc_lock_fini_recursive, __rtld_lock_fini_recursive,
__libc_lock_lock, __libc_lock_trylock, __libc_lock_unlock,
__libc_lock_define_initialized_recursive,
__rtld_lock_define_initialized_recursive,
__libc_lock_init_recursive, __libc_lock_trylock_recursive,
__libc_lock_lock_recursive, __libc_lock_unlock_recursive,
__rtld_lock_initialize, __rtld_lock_trylock_recursive,
__rtld_lock_lock_recursive, __rtld_lock_unlock_recursive
__libc_once_define, __libc_mutex_unlock): Reimplement with lll.
(__libc_lock_define_recursive, __rtld_lock_define_recursive,
_LIBC_LOCK_RECURSIVE_INITIALIZER, _RTLD_LOCK_RECURSIVE_INITIALIZER):
New macros.
Include <libc-lockP.h> to reimplement libc_key* with pthread_key*.
* hurd/hurdlock.c: New file.
* hurd/hurdlock.h: New file.
* mach/lowlevellock.h: New file
This gets rid of a lot of kludge and gets closer to other ports.
* hurd/Makefile (headers): Remove threadvar.h.
(inline-headers): Remove threadvar.h.
* hurd/Versions (GLIBC_2.0: Remove __hurd_sigthread_stack_base,
__hurd_sigthread_stack_end, __hurd_sigthread_variables,
__hurd_threadvar_max, __hurd_errno_location.
(HURD_CTHREADS_0.3): Add pthread_getattr_np, pthread_attr_getstack.
* hurd/hurd/signal.h: Do not include <hurd/threadvar.h>.
(_hurd_self_sigstate): Use THREAD_SELF to get _hurd_sigstate.
(_HURD_SIGNAL_H_EXTERN_INLINE): Use THREAD_SELF to get _hurd_sigstate,
unless TLS is not initialized yet, in which case we do not need a
critical section yet anyway.
* hurd/hurd/threadvar.h: Include <tls.h>, do not include
<machine-sp.h>.
(__hurd_sigthread_variables, __hurd_threadvar_max): Remove variables
declarations.
(__hurd_threadvar_index): Remove enum.
(_HURD_THREADVAR_H_EXTERN_INLINE): Remove macro.
(__hurd_threadvar_location_from_sp,__hurd_threadvar_location): Remove
inlines.
(__hurd_reply_port0): New variable declaration.
(__hurd_local_reply_port): New macro.
* hurd/hurdsig.c (__hurd_sigthread_variables): Remove variable.
(interrupted_reply_port_location): Add thread_t parameter. Use it
with THREAD_TCB to access thread-local variables.
(_hurdsig_abort_rpcs): Pass ss->thread to
interrupted_reply_port_location.
(_hurd_internal_post_signal): Likewise.
(_hurdsig_init): Use presence of cthread_fork instead of
__hurd_threadvar_stack_mask to start signal thread by hand.
Remove signal thread threadvar initialization.
* hurd/hurdstartup.c: Do not include <hurd/threadvar.h>
* hurd/sigunwind.c: Include <hurd/threadvar.h>
(_hurdsig_longjmp_from_handler): Use __hurd_local_reply_port instead
of threadvar.
* sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE): Add
__libc_lock_self0.
(ld.GLIBC_2.0): Remove __hurd_sigthread_stack_base,
__hurd_sigthread_stack_end, __hurd_sigthread_variables.
(ld.GLIBC_PRIVATE): Add __libc_lock_self0.
* sysdeps/mach/hurd/cthreads.c: Add __libc_lock_self0.
* sysdeps/mach/hurd/dl-sysdep.c (errno, __hurd_sigthread_stack_base,
__hurd_sigthread_stack_end, __hurd_sigthread_variables, threadvars,
__hurd_threadvar_stack_offset, __hurd_threadvar_stack_mask): Do not
define variables.
* sysdeps/mach/hurd/errno-loc.c: Do not include <errno.h> and
<hurd/threadvar.h>.
[IS_IN(rtld)] (rtld_errno): New variable.
[IS_IN(rtld)] (__errno_location): New weak function.
[!IS_IN(rtld)]: Include "../../../csu/errno-loc.c".
* sysdeps/mach/hurd/errno.c: Remove file.
* sysdeps/mach/hurd/fork.c: Include <hurd/threadvar.h>
(__fork): Remove THREADVAR_SPACE macro and its use.
* sysdeps/mach/hurd/i386/init-first.c (__hurd_threadvar_max): Remove
variable.
(init): Do not initialize threadvar.
* sysdeps/mach/hurd/i386/libc.abilist (__hurd_threadvar_max): Remove
symbol.
* sysdeps/mach/hurd/i386/sigreturn.c (__sigreturn): Use
__hurd_local_reply_port instead of threadvar.
* sysdeps/mach/hurd/i386/tls.h (tcbhead_t): Add reply_port and
_hurd_sigstate fields.
(HURD_DESC_TLS, __LIBC_NO_TLS, THREAD_TCB): New macro.
* sysdeps/mach/hurd/i386/trampoline.c: Remove outdated comment.
* sysdeps/mach/hurd/libc-lock.h: Do not include <hurd/threadvar.h>.
(__libc_lock_owner_self): Use &__libc_lock_self0 and THREAD_SELF
instead of threadvar.
* sysdeps/mach/hurd/libc-tsd.h: Remove file.
* sysdeps/mach/hurd/mig-reply.c (GETPORT, reply_port): Remove macros.
(use_threadvar, global_reply_port): Remove variables.
(__hurd_reply_port0): New variable.
(__mig_get_reply_port): Use __hurd_local_reply_port and
__hurd_reply_port0 instead of threadvar.
(__mig_dealloc_reply_port): Likewise.
(__mig_init): Do not initialize threadvar.
* sysdeps/mach/hurd/profil.c: Fix comment.
* sysdeps/generic/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR):
Define macro.
* sysdeps/mach/thread_state.h (MACHINE_THREAD_STATE_FIX_NEW): New macro.
* sysdeps/mach/i386/thread_state.h
(MACHINE_NEW_THREAD_STATE_FLAVOR): New macro, defined to
i386_THREAD_STATE.
(MACHINE_THREAD_STATE_FLAVOR): Define to i386_REGS_SEGS_STATE instead of
i386_THREAD_STATE.
(MACHINE_THREAD_STATE_FIX_NEW): New macro, reads segments.
* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Use
i386_REGS_SEGS_STATE instead of i386_THREAD_STATE.
* sysdeps/mach/hurd/i386/tls.h (TCB_ALIGNMENT, HURD_SEL_LDT): New
macros.
(_hurd_tls_fork): Add original thread parameter, Duplicate existing LDT
descriptor instead of creating a new one.
(_hurd_tls_new): New function, creates a new descriptor and updates tcb.
* mach/setup-thread.c: Include <ldsodefs.h>.
(__mach_setup_thread): Call _dl_allocate_tls, pass
MACHINE_NEW_THREAD_STATE_FLAVOR to __thread_set_state instead of
MACHINE_THREAD_STATE_FLAVOR, before getting
MACHINE_THREAD_STATE_FLAVOR, calling _hurd_tls_new, and setting
MACHINE_THREAD_STATE_FLAVOR with the result.
* hurd/hurdfault.c (_hurdsig_fault_init): Call
MACHINE_THREAD_STATE_FIX_NEW.
* sysdeps/mach/hurd/fork.c (__fork): Call _hurd_tls_fork for sigthread
too. Add original thread parameter.
so interfaces needing it can get it.
* stdlib/errno.h (error_t): Move definition to...
* bits/types/error_t.h: ... new header.
* stdlib/Makefile (headers): Add bits/types/error_t.h.
* sysdeps/mach/hurd/bits/errno.h (error_t): Move definition to...
* sysdeps/mach/hurd/bits/types/error_t.h: ... new header.
* sysdeps/mach/hurd/errnos.awk (error_t): Likewise.
* hurd/hurd.h: Include <bits/types/error_t.h>
* hurd/hurd/fd.h: Include <bits/types/error_t.h>
* hurd/hurd/id.h: Include <errno.h> and <bits/types/error_t.h>
* hurd/hurd/lookup.h: Include <errno.h> and <bits/types/error_t.h>
* hurd/hurd/resource.h: Include <bits/types/error_t.h>
* hurd/hurd/signal.h: Include <bits/types/error_t.h>
* hurd/hurd/sigpreempt.h: Include <bits/types/error_t.h>
* hurd/hurd.h: Include <bits/types/sigset_t.h>
* hurd/hurd/fd.h: Include <sys/select.h> and <bits/types/sigset_t.h>
(_hurd_fd_read, _hurd_fd_write): Use __loff_t instead of loff_t.
* hurd/hurd/signal.h: Include <bits/types/stack_t.h> and
<bits/types/sigset_t.h>.
[!defined __USE_GNU]: Do not #error out.
(struct hurd_sigstate): Use _NSIG instead of NSIG.
* hurd/hurd/sigpreempt.h (__need_size_t): Define.
Include <stddef.h> and <bits/types/sigset_t.h>
(struct hurd_signal_preemptor, hurd_catch_signal): Use __sighandler_t
instead of sighandler_t.
thus making <hurd/port.h> and <hurd/userlink.h> includable without
_GNU_SOURCE.
* hurd/hurd/port.h: Do not include <hurd/signal.h>.
* hurd/hurd/userlink.h [!defined __USE_EXTERN_INLINES ||
!defined _LIBC || !IS_IN (libc)]: Do not include <hurd/signal.h>.
This patch mechanically removes all remaining uses, and the
definitions, of the following libio name aliases:
name replaced with
---- -------------
_IO_FILE FILE
_IO_fpos_t __fpos_t
_IO_fpos64_t __fpos64_t
_IO_size_t size_t
_IO_ssize_t ssize_t or __ssize_t
_IO_off_t off_t
_IO_off64_t off64_t
_IO_pid_t pid_t
_IO_uid_t uid_t
_IO_wint_t wint_t
_IO_va_list va_list or __gnuc_va_list
_IO_BUFSIZ BUFSIZ
_IO_cookie_io_functions_t cookie_io_functions_t
__io_read_fn cookie_read_function_t
__io_write_fn cookie_write_function_t
__io_seek_fn cookie_seek_function_t
__io_close_fn cookie_close_function_t
I used __fpos_t and __fpos64_t instead of fpos_t and fpos64_t because
the definitions of fpos_t and fpos64_t depend on the largefile mode.
I used __ssize_t and __gnuc_va_list in a handful of headers where
namespace cleanliness might be relevant even though they're
internal-use-only. In all other cases, I used the public-namespace
name.
There are a tiny handful of places where I left a use of 'struct _IO_FILE'
alone, because it was being used together with 'struct _IO_FILE_plus'
or 'struct _IO_FILE_complete' in the same arithmetic expression.
Because this patch was almost entirely done with search and replace, I
may have introduced indentation botches. I did proofread the diff,
but I may have missed something.
The ChangeLog below calls out all of the places where this was not a
pure search-and-replace change.
Installed stripped libraries and executables are unchanged by this patch,
except that some assertions in vfscanf.c change line numbers.
* libio/libio.h (_IO_FILE): Delete; all uses changed to FILE.
(_IO_fpos_t): Delete; all uses changed to __fpos_t.
(_IO_fpos64_t): Delete; all uses changed to __fpos64_t.
(_IO_size_t): Delete; all uses changed to size_t.
(_IO_ssize_t): Delete; all uses changed to ssize_t or __ssize_t.
(_IO_off_t): Delete; all uses changed to off_t.
(_IO_off64_t): Delete; all uses changed to off64_t.
(_IO_pid_t): Delete; all uses changed to pid_t.
(_IO_uid_t): Delete; all uses changed to uid_t.
(_IO_wint_t): Delete; all uses changed to wint_t.
(_IO_va_list): Delete; all uses changed to va_list or __gnuc_va_list.
(_IO_BUFSIZ): Delete; all uses changed to BUFSIZ.
(_IO_cookie_io_functions_t): Delete; all uses changed to
cookie_io_functions_t.
(__io_read_fn): Delete; all uses changed to cookie_read_function_t.
(__io_write_fn): Delete; all uses changed to cookie_write_function_t.
(__io_seek_fn): Delete; all uses changed to cookie_seek_function_t.
(__io_close_fn): Delete: all uses changed to cookie_close_function_t.
* libio/iofopncook.c: Remove unnecessary forward declarations.
* libio/iolibio.h: Correct outdated commentary.
* malloc/malloc.c (__malloc_stats): Remove unnecessary casts.
* stdio-common/fxprintf.c (__fxprintf_nocancel):
Remove unnecessary casts.
* stdio-common/getline.c: Use _IO_getdelim directly.
Don't redefine ssize_t.
* stdio-common/printf_fp.c, stdio_common/printf_fphex.c
* stdio-common/printf_size.c: Don't redefine size_t or FILE.
Remove outdated comments.
* stdio-common/vfscanf.c: Don't redefine va_list.
* hurd/Versions: Fix version when _hurd_exec_paths was added.
* mach/Versions: Fix version when __mach_host_self_ was added.
* sysdeps/mach/hurd/i386/ld.abilist: New file.
* sysdeps/mach/hurd/i386/libBrokenLocale.abilist: New file.
* sysdeps/mach/hurd/i386/libanl.abilist: New file.
* sysdeps/mach/hurd/i386/libc.abilist: New file.
* sysdeps/mach/hurd/i386/libcrypt.abilist: New file.
* sysdeps/mach/hurd/i386/libdl.abilist: New file.
* sysdeps/mach/hurd/i386/libm.abilist: New file.
* sysdeps/mach/hurd/i386/libnsl.abilist: New file.
* sysdeps/mach/hurd/i386/libresolv.abilist: New file.
* sysdeps/mach/hurd/i386/librt.abilist: New file.
* sysdeps/mach/hurd/i386/libutil.abilist: New file.
* hurd/hurd.h (__hurd_fail): Always declare function, and provide inline
version only if __USE_EXTERN_INLINES is defined.
* hurd/hurd/fd.h (_hurd_fd_error_signal, _hurd_fd_error, __hurd_dfail,
__hurd_sockfail): Likewise.
(_hurd_fd_get): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and IS_IN(libc).
* hurd/hurd/port.h (_hurd_port_init, _hurd_port_locked_get,
_hurd_port_get, _hurd_port_free, _hurd_port_locked_set,
_hurd_port_set): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and
IS_IN(libc).
* hurd/hurd/signal.h (_hurd_self_sigstate, _hurd_critical_section_lock,
_hurd_critical_section_unlock): Likewise.
* hurd/hurd/threadvar.h (__hurd_threadvar_location_from_sp,
* __hurd_threadvar_location): Likewise.
* hurd/hurd/userlink.h (_hurd_userlink_link, _hurd_userlink_unlink,
_hurd_userlink_clear): Likewise.
* mach/lock-intern.h (__spin_lock_init, __spin_lock, __mutex_lock,
__mutex_unlock, __mutex_trylock): Always declare functions, and provide
inline versions only if __USE_EXTERN_INLINES and _LIBC are defined.
* mach/mach/mig_support.h (__mig_strncpy): Likewise.
* sysdeps/generic/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* sysdeps/mach/i386/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* mach/spin-lock.c (__USE_EXTERN_INLINES): Define to 1.
* hurd/Versions (libc: GLIBC_2.27): Add _hurd_fd_error_signal,
_hurd_fd_error, __hurd_dfail, __hurd_sockfail, _hurd_port_locked_set,
__hurd_threadvar_location_from_sp, __hurd_threadvar_location,
_hurd_userlink_link, _hurd_userlink_unlink, _hurd_userlink_clear.
* hurd/hurd/fd.h: Include <fcntl.h>
(__hurd_at_flags): New function.
* hurd/lookup-at.c (__file_name_lookup_at): Replace flag computation
with call to __hurd_at_flags.
* include/unistd.h (__faccessat, __faccessat_noerrno): Add declaration.
* sysdeps/mach/hurd/access.c (access_common): Move implementation to
__faccessat
(hurd_fail_seterrno, hurd_fail_noerrno): Move to sysdeps/mach/hurd/faccessat.c.
(__access_noerrno): Use __faccessat_common instead of access_common.
(__access): Likewise.
* sysdeps/mach/hurd/euidaccess.c (__euidaccess): Replace implementation
with a call to __faccessat.
* sysdeps/mach/hurd/faccessat.c (faccessat): Rename into...
(__faccessat_common): ... this. Move implementation of __access into it when
AT_FLAGS does not contain AT_EACCESS. Make it call __hurd_at_flags, add
reauthenticate_cwdir_at helper to implement AT mechanism.
(__faccessat_noerrno): New function, just calls __faccessat_common.
(__faccessat): New function, just calls __faccessat_common.
(faccessat): Define weak alias.
From: Emilio Pozuelo Monfort <pochu27@gmail.com>
From: Svante Signell <svante.signell@gmail.com>
Pass the file paths of executable to the exec server, both relative and
absolute, which exec needs to properly execute and avertise #!-scripts.
Previously, the exec server tried to guess the name from argv[0] but argv[0]
only contains the executable name by convention.
* hurd/hurdexec.c (_hurd_exec): Deprecate function.
(_hurd_exec_paths): New function.
* hurd/hurd.h (_hurd_exec): Deprecate function.
(_hurd_exec_paths): Declare function.
* hurd/Versions: Export _hurd_exec_paths.
* sysdeps/mach/hurd/execve.c: Include <stdlib.h> and <stdio.h>
(__execve): Use __getcwd to build absolute path, and use
_hurd_exec_paths instead of _hurd_exec.
* sysdeps/mach/hurd/spawni.c: Likewise.
* sysdeps/mach/hurd/fexecve.c: Use _hurd_exec_paths instead of
_hurd_exec.
