When opening a temporary file without O_CLOEXEC we risk leaking the
file descriptor if another thread calls (fork and then) exec while we
have the fd open. Fix this by consistently passing O_CLOEXEC everywhere
where we open a file for internal use (and not to return it to the user,
in which case the API defines whether or not the close-on-exec flag
shall be set on the returned fd).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230419160207.65988-4-bugaevc@gmail.com>
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>
For the legacy ABI with supports 32-bit time_t it calls the 64-bit
time directly, since the LFS symbols calls the 64-bit time_t ones
internally.
Checked on i686-linux-gnu and x86_64-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
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
It replaces the internal usage of __{f,l}xstat{at}{64} with the
__{f,l}stat{at}{64}. It should not change the generate code since
sys/stat.h explicit defines redirections to internal calls back to
xstat* symbols.
Checked with a build for all affected ABIs. I also check on
x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
The changes introduce a memory leak for gconv steps arrays whose
first element is an internal conversion, which has a fixed
reference count which is not decremented. As a result, after the
change in commit 50ce3eae5b, the steps
array is never freed, resulting in an unbounded memory leak.
This reverts commit 50ce3eae5b
("gconv: Check reference count in __gconv_release_cache
[BZ #24677]") and commit 7e740ab2e7
("libio: Fix gconv-related memory leak [BZ #24583]"). It
reintroduces bug 24583. (Bug 24677 was just a regression caused by
the second commit.)
This fixes a regression introduced in commit
7e740ab2e7 ("libio: Fix gconv-related
memory leak [BZ #24583]").
__gconv_release_cache is only ever called with heap-allocated
arrays which contain at least one member. The statically allocated
ASCII steps are filtered out by __wcsmbs_close_conv.
* 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.
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.
2001-09-01 Ulrich Drepper <drepper@redhat.com>
* iconv/gconv_cache.c: Rename variable cache to __gconv_cache and
export it.
* iconv/Versions (libc) [GLIBC_2.2.5]: Export __gconv_cache.
* iconv/iconv_prog.c (insert_cache): New function.
(print_known_names): If cache is used call insert_cache to use the
information from the cache [PR libc/2509].
2001-08-14 Tom Rix <trix@redhat.com>
* iconv/gconv_cache.c (find_module): Add #ifndef STATIC_GCONV.
* iconv/Makefile: Fix gconv_cache.c CFLAGS.
2001-08-13 Tom Rix <trix@redhat.com>
* sysdeps/unix/sysv/aix/Makefile: Add rule to import kernel symbols.
* sysdeps/unix/sysv/aix/bits/types.h: Fix type of __id_t, __useconds_t
and __intptr_t.
2001-08-15 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S (__getcontext):
Store the access registers to the ucontext structure.
* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S (__getcontext):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S (__setcontext):
Load the access registers from the ucontext structure.
* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S (__setcontext):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h: Adjust the SC_xxx
offsets to the new ucontext layout.
* sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sys/ucontext.h: Fix the layout
of the ucontext structure.
* sysdeps/unix/sysv/linux/s390/s390-64/sys/ucontext.h: Likewise.
* 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.
2001-07-23 Ulrich Drepper <drepper@redhat.com>
* iconv/gconv_cache.c (__gconv_lookup_cache): Handle encoding from
and to INTERNAL.
* iconv/iconvconfig.c: Create a special record for the INTERNAL
encoding name in the output file.
