They are both used by __libc_freeres to free all library malloc
allocated resources to help tooling like mtrace or valgrind with
memory leak tracking.
The current scheme uses assembly markers and linker script entries
to consolidate the free routine function pointers in the RELRO segment
and to be freed buffers in BSS.
This patch changes it to use specific free functions for
libc_freeres_ptrs buffers and call the function pointer array directly
with call_function_static_weak.
It allows the removal of both the internal macros and the linker
script sections.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
In the future, this will result in a compilation failure if the
macros are unexpectedly undefined (due to header inclusion ordering
or header inclusion missing altogether).
Assembler sources are more difficult to convert. In many cases,
they are hand-optimized for the mangling and no-mangling variants,
which is why they are not converted.
sysdeps/s390/s390-32/__longjmp.c and sysdeps/s390/s390-64/__longjmp.c
are special: These are C sources, but most of the implementation is
in assembler, so the PTR_DEMANGLE macro has to be undefined in some
cases, to match the assembler style.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This allows us to define a generic no-op version of PTR_MANGLE and
PTR_DEMANGLE. In the future, we can use PTR_MANGLE and PTR_DEMANGLE
unconditionally in C sources, avoiding an unintended loss of hardening
due to missing include files or unlucky header inclusion ordering.
In i386 and x86_64, we can avoid a <tls.h> dependency in the C
code by using the computed constant from <tcb-offsets.h>. <sysdep.h>
no longer includes these definitions, so there is no cyclic dependency
anymore when computing the <tcb-offsets.h> constants.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
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>
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
In iconv/gconv_conf.c, __gconv_get_path unnecessarily obtains a lock when
populating the array pointed to by __gconv_path_elem. The locking is not
necessary because all calls to __gconv_read_conf (which in turn calls
__gconv_get_path) are serialized using __libc_once.
This patch:
- removes all locking in __gconv_get_path;
- replaces all explicitly serialized __gconv_read_conf calls with calls to
__gconv_load_conf, a new wrapper that is serialized internally;
- adds a new test, iconv/tst-iconv_mt.c, to exercise iconv initialization,
usage, and cleanup in a multi-threaded program;
- indents __gconv_get_path correctly, removing tab characters (which makes
the patch look a little bigger than it really is).
After removing the unnecessary locking, it was confirmed that the test case
fails if the relevant __libc_once is removed. Additionally, four localedata
and iconvdata tests also fail. This gives confidence that the testsuite
sufficiently guards against some regressions relating to multi-threading
with iconv.
Tested on x86_64 and i686.
* iconv/gconv_cache.c (__gconv_lookup_cache): Return __GCONV_NULCONV
if from and to charsets are the same.
* iconv/gconv_db.c (__gconv_find_transform): Likewise.
* intl/dcigettext.c (_nl_find_msg): Return NULL even if __gconv_open
returns __GCONV_NOCONV, but not for __GCONV_NULCONV.
2007-07-17 Jakub Jelinek <jakub@redhat.com>
* wcsmbs/wchar.h: Only define wint_t if __need_wint_t.
Don't define wint_t when __need_mbstate_t unless it
is necessary.
(__mbstate_t): Use __WINT_TYPE__ rather than wint_t
in the typedef if possible.
* wctype/wctype.h (wint_t): Define by including
wchar.h with __need_wint_t instead of including stddef.h
with __need_wint_t and as fallback definining it ourselves.
* iconv/gconv.h (__need_wint_t): Define before including
wchar.h.
* sysdeps/gnu/_G_config.h: Don't include gconv.h if not _LIBC
or _GLIBCPP_USE_WCHAR_T.
(__need_wchar_t): Don't define
if not _LIBC or _GLIBCPP_USE_WCHAR_T.
(__need_wint_t): Don't define before including stddef.h,
define before including wchar.h only if _LIBC or
_GLIBCPP_USE_WCHAR_T.
(_G_iconv_t): Don't define if not _LIBC or _GLIBCPP_USE_WCHAR_T.
* sysdeps/mach/hurd/_G_config.h: Likewise.
* sysdeps/generic/_G_config.h: Likewise.
* libio/libio.h (__wunderflow, __wuflow, __woverflow): Only
prototype if _LIBC or _GLIBCPP_USE_WCHAR_T.
(_IO_getwc_unlocked, _IO_putwc_unlocked): Only define
if _LIBC or _GLIBCPP_USE_WCHAR_T.
* iconv/gconv_db.c: Don't define lock as static. Rename to
__gconv_lock and export from the file.
* iconv/gconv_int.h: Declare __gconv_lock.
* libio/iofclose.c [_LIBC] (_IO_new_fclose): Lock gconv lock
before __gconv_release_step calls.
Patch by Shunichi Sagawa <s-sagawa@jp.fujitsu.com>.
* iconv/gconv_simple.c (internal_ucs4_loop): Fix typo in last change.
* iconv/gconv_db.c
2002-11-30 Bruno Haible <bruno@clisp.org>
* iconv/gconv.h (__gconv_btowc_fct): New typedef.
(struct __gconv_step): New field __btowc_fct.
* wcsmbs/btowc.c (__btowc): Use the __btowc_fct shortcut if possible.
* iconv/gconv_int.h (__BUILTIN_TRANSFORM): Renamed from
__BUILTIN_TRANS.
(__gconv_btwoc_ascii): New declaration.
* iconv/gconv_simple.c (BUILTIN_TRANSFORMATION): Add BtowcFct argument.
(__gconv_btwoc_ascii): New function.
* iconv/gconv_builtin.h: Add BtowcFct argument to all
BUILTIN_TRANSFORMATION invocations.
* iconv/gconv_conf.c (BUILTIN_TRANSFORMATION): Add BtowcFct argument.
* iconv/iconvconfig.c (BUILTIN_TRANSFORMATION): Likewise.
* iconv/gconv_builtin.c (map): New field btowc_fct.
(BUILTIN_TRANSFORMATION): Add BtowcFct argument. Use it to initialize
btowc_fct field.
(__gconv_get_builtin_trans): Initialize __btowc_fct field.
* iconv/gconv_cache.c (find_module): Initialize __btowc_fct field.
* iconv/gconv_db.c (gen_steps, increment_counter): Likewise.
* wcsmbs/wcsmbsload.c (to_wc, to_mb): Likewise.
* iconv/skeleton.c: Document STORE_REST and FROM_ONEBYTE.
(gconv_init): Initialize __btowc_fct field.
Undefine EXTRA_LOOP_ARGS and FROM_ONEBYTE at the end.
* iconv/loop.c: Document ONEBYTE_BODY.
(gconv_btowc, FROM_ONEBYTE): Define if ONEBYTE_BODY is defined.
Undefine ONEBYTE_BODY at the end.
* iconvdata/8bit-generic.c (ONEBYTE_BODY): New macro.
* iconvdata/8bit-gap.c (NONNUL): New macro.
(BODY for FROM_LOOP): Use it.
(ONEBYTE_BODY): New macro.
* iconvdata/isiri-3342.c (HAS_HOLES): Set to 1.
(NONNUL): New macro.
* iconvdata/ansi_x3.110.c (ONEBYTE_BODY): New macro.
* iconvdata/armscii-8.c (ONEBYTE_BODY): New macro.
* iconvdata/cp1255.c (ONEBYTE_BODY): New macro.
* iconvdata/cp1258.c (ONEBYTE_BODY): New macro.
* iconvdata/tcvn5712-1.c (ONEBYTE_BODY): New macro.
* iconvdata/big5.c (ONEBYTE_BODY): New macro.
* iconvdata/big5hkscs.c (ONEBYTE_BODY): New macro.
* iconvdata/euc-cn.c (ONEBYTE_BODY): New macro.
* iconvdata/euc-jp.c (ONEBYTE_BODY): New macro.
* iconvdata/euc-jisx0213.c (ONEBYTE_BODY): New macro.
* iconvdata/euc-kr.c (ONEBYTE_BODY): New macro.
* iconvdata/euc-tw.c (ONEBYTE_BODY): New macro.
* iconvdata/gbk.c (ONEBYTE_BODY): New macro.
* iconvdata/gb18030.c (ONEBYTE_BODY): New macro.
* iconvdata/ibm932.c: Include <stdbool.h>.
(TRUE, FALSE): Remove macros.
(BODY for FROM_LOOP): Remove unused variable rp1.
(ONEBYTE_BODY): New macro.
(BODY for TO_LOOP): Use bool.
* iconvdata/ibm932.h (__ibm932sb_to_ucs4_idx): Remove array.
* iconvdata/ibm943.c: Include <stdbool.h>.
(TRUE, FALSE): Remove macros.
(BODY for FROM_LOOP): Remove unused variable rp1.
(ONEBYTE_BODY): New macro.
(BODY for TO_LOOP): Use bool.
* iconvdata/ibm943.h (__ibm943sb_to_ucs4_idx): Remove array.
* iconvdata/iso8859-1.c (ONEBYTE_BODY): New macro.
* iconvdata/iso_6937-2.c (ONEBYTE_BODY): New macro.
* iconvdata/iso_6937.c (ONEBYTE_BODY): New macro.
* iconvdata/johab.c (ONEBYTE_BODY): New macro.
* iconvdata/sjis.c (ONEBYTE_BODY): New macro.
* iconvdata/shift_jisx0213.c (ONEBYTE_BODY): New macro.
* iconvdata/t.61.c (ONEBYTE_BODY): New macro.
* iconvdata/uhc.c (ONEBYTE_BODY): New macro.
* iconvdata/gbbig5.c: Tweak comment.
2002-08-04 Ulrich Drepper <drepper@redhat.com>
* stdio-common/psignal.c: Declare _sys_siglist_internal. Use USEINT
to access _sys_siglist.
* string/strsignal.c: Likewise.
* sysdeps/generic/siglist.c: Add _sys_siglist_internal alias.
* sysdeps/gnu/siglist.c: Likewise.
* sysdeps/unix/siglist.c: Likewise.
* sysdeps/unix/sysv/linux/arm/siglist.c: Likewise.
* libio/fileops.c: Add missing INTUSEs for _IO_file_jumps.
* libio/wfileops.c: Add missing INTUSE for _IO_file_close.
* intl/dcigettext.c: Define _nl_default_dirname_internal as hidden
alias and use it.
* intl/bindtextdom.c: Use _nl_default_dirname_internal.
* include/netinet/in.h: Add declaration of in6addr_loopback_internal.
* inet/in6_addr.c: Add INTVARDEF for in6addr_loopback.
* sysdeps/posix/getaddrinfo.c: Use INTUSE for in6addr_loopback access.
* include/time.h: Add libc_hidden_proto for __gmtime_r.
* time/gmtime.c (__gmtime_r): Add libc_hidden_def.
* iconv/Versions: Replace __gconv_alias_db, __gconv_modules_db,
and __gconv_cache with __gconv_get_alias_db, __gconv_get_modules_db,
and __gconv_get_cache respectively.
* iconv/gconv_cache.c (gconv_cache): Renamed for __gconv_cache and
defined static. Change all users.
(__gconv_get_cache): New function.
* iconv/gconv_db.c (__gconv_get_modules_db): New function.
(__gconv_get_alias_db): New function.
* iconv/gconv_int.h (__gconv_alias_db): Declare as hidden.
(__conv_modules_db): Likewise.
Add prototypes for __gconv_get_cache, __gconv_get_modules_db,
and __gconv_get_alias_db.
* iconv/iconv_prog.c: Use the new functions instead of accessing the
variables.
* include/stdlib.h: Add prototype and libc_hidden_proto for
__default_morecore.
* sysdeps/generic/morecore.c: Include <stdlib.h>.
* malloc/obstack.c: Remove fputs macro.
* malloc/mtrace.c: Remove fopen macro.
* iconv/gconv_cache.c (find_module): Don't allocate room for the
filename. Use alloca, we don't need it beyond this function.
(__gconv_release_cache): New function.
* iconv/gconv_db.c (__gconv_close_transform): Call
__gconv_release_cache after the steps are handled.
* iconv/gconv_dl.c (__gconv_find_shlib): Allocate file name in the
record as well.
* iconv/gconv_int.h: Add prototype fpr __gconv_release_cache.
2001-07-22 Ulrich Drepper <drepper@redhat.com>
* iconv/gconv_builtin.c (struct builtin_map): Remove init and end
elements.
(BUILTIN_TRANSFORMATION): Remove Init and End parameters.
(__gconv_get_builtin_trans): Initialize __init_fct and __end_fct to
NULL.
* iconv/gconv_builtin.h: Remove NULL parameters for Init and End in
all BUILTIN_TRANSFORMATION calls.
* iconv/gconv_conf.c (BUILTIN_TRANSFORMATION): Remove Init and End
parameters.
* iconv/gconv_simple.c: Likewise.
* iconv/gconv_db.c (gen_steps): Internal converters don't have
initializers, move the code accordingly.
* iconv/gconv_conf.c (__gconv_read_conf): Don't read configuration
file if STATIC_GCONV is defined.
* iconv/gconv_conf.c (__gconv_path_envvar): New global variable.
(__gconv_get_path): Use it instead of call getenv.
(__gconv_read_conf): First see whether cache can be used. If yes,
don't do any work here.
* iconv/gconv_db.c (__gconv_release_step): Renamed from release_step
and exported. Change callers.
(__gconv_find_transform): First call __gconv_lookup_cache and only
continue if it signals no cache available. Remove some unnecessary
tests.
* iconv/gconv_int.h: Declare __gconv_path_envvar, __gconv_lookup_cache,
__gconv_release_step, and __gconv_loaded_cache.
* iconv/gconv_cache.c: New file.
* iconv/iconvconfig.c: New file.
* iconv/iconvconfig.h: New file.
* iconv/strtab.c: New file.
* iconv/Makefile: Add rules to build new files and programs.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
options after $(build-module), which is no longer a single command.
(LDFLAGS-link-rpcuserlibs): New variable to hold those options.
(LDFLAGS-libmachuser-link.so, LDFLAGS-libhurduser-link.so): New
variables using it. Reported by Mark Kettenis <kettenis@gnu.org>.
2001-03-11 Roland McGrath <roland@frob.com>
* elf/rtld.c (dl_main): Add cast to quiet warning.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* iconv/gconv_conf.c (__gconv_get_path): Likewise.
(__gconv_read_conf): Likewise.
* iconv/gconv_db.c (gen_steps): Likewise.
(__gconv_find_transform): Likewise.
* locale/programs/charmap-dir.c (fopen_uncompressed): Likewise.
(fopen_uncompressed): Use const in second argument's type.
2001-03-11 Roland McGrath <roland@frob.com>
* sysdeps/mach/hurd/dl-sysdep.c (__writev): New function.
* mach/mach_error.h: Fix ancient #endif syntax.
* hurd/hurdmalloc.c: Likewise.
* sysdeps/generic/atomicity.h (exchange_and_add, atomic_add,
compare_and_swap): Add volatile qualifier to first arg, to bring
these prototypes in line with all the other implementations.
Add a #warning to remind the builder that these are not atomic.
2001-03-04 Roland McGrath <roland@frob.com>
* hurd/vpprintf.c (vpprintf) [USE_IN_LIBIO]: Use innermore first
member of TEMP_F so its type is _IO_FILE * as expected.
* hurd/fopenport.c (seekio): Conditionalize type of POS argument
on [USE_IN_LIBIO]. Check the value for overflow, since for libio
it might exceed off_t's range.
2001-02-25 Roland McGrath <roland@frob.com>
* sysdeps/mach/hurd/sysd-stdio.c (__stdio_reopen): Use prototype.
* sysdeps/unix/bsd/getpt.c (__posix_openpt): Likewise.
* sysdeps/mach/hurd/i386/intr-msg.h (SYSCALL_EXAMINE): Make this a
macro instead of an inline function,
(MSG_EXAMINE): Likewise.
* hurd/hurd/ioctl.h (_HURD_HANDLE_IOCTLS_1): Remove extraneous ##.
* hurd/get-host.c: Include <string.h> for decls of built-ins.
* hurd/hurdchdir.c: Likewise.
* sysdeps/mach/hurd/i386/sigreturn.c: Likweise.
* sysdeps/mach/hurd/opendir.c: Likewise.
* mach/mach_init.c: Include <unistd.h> for _exit decl.
* mach/errsystems.awk: Give output file a trailing newline.
* mach/Machrules (MIG): Prepend CC='${CC}' to the mig command, so that
the script will use our compiler for the cpp stage.
With --enable-all-warnings we get a whole bunch of warnings,
and these are just a few fixes; there are more needed to silence it.
* mach/mach/mig_support.h (__mig_strncpy, mig_strncpy): Add extern
decls before extern inline defns to quiet gcc warning.
* hurd/hurd/threadvar.h (__hurd_threadvar_location_from_sp): Likewise.
* sysdeps/mach/i386/machine-sp.h (__thread_stack_pointer): Likewise.
2000-08-29 Akira Higuchi <a@kondara.org>
* iconv/gconv_db.c (increment_counter): Reset __init_fct, __fct,
and __end_fct fields of struct __gconv_step.
* iconv/Makefile (tests): Add iconv-bug2.
* iconv/iconv-bug2.c: New file.
* iconvdata/euc-kr.c (BODY for FROM_LOOP): Pass 'inend - inptr'
instead of 'inptr - inend' to ksc5601_to_ucs4.
* iconvdata/sjis.c (BODY for FROM_LOOP): Allow 0x7f character.
* iconvdata/iso-2022-cn.c (BODY for FROM_LOOP): If an incomplete
character or shift sequence is found at the end of the input
string, return__GCONV_INCOMPLETE_INPUT instead of
__GCONV_EMPTY_INPUT.
* iconvdata/iso-2022-jp.c (BODY for FROM_LOOP): Likewise.
* iconvdata/iso-2022-kr.c (BODY for FROM_LOOP): Likewise.
* iconvdata/iso-2022-jp.c (BODY for FROM_LOOP): Return
__GCONV_ILLEGAL_INPUT for 8bit characters.
