| Age | Commit message (Collapse) | Author | Files | Lines |
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The _chk variants of all of the printf functions become much simpler.
This is the last thing that we needed _IO_acquire_lock_clear_flags2
for, so it can go as well. I took the opportunity to make the headers
included and the names of all local variables consistent across all the
affected files.
Since we ultimately want to get rid of __no_long_double as well, it
must be possible to get all of the nontrivial effects of the _chk
functions by calling the _internal functions with appropriate flags.
For most of the __(v)xprintf_chk functions, this is covered by
PRINTF_FORTIFY plus some up-front argument checks that can be
duplicated. However, __(v)sprintf_chk installs a custom jump table so
that it can crash instead of overflowing the output buffer. This
functionality is moved to __vsprintf_internal, which now has a
'maxlen' argument like __vsnprintf_internal; to get the unsafe
behavior of ordinary (v)sprintf, pass -1 for that argument.
obstack_printf_chk and obstack_vprintf_chk are no longer in the same
file.
As a side-effect of the unification of both fortified and non-fortified
vdprintf initialization, this patch fixes bug 11319 for __dprintf_chk
and __vdprintf_chk, which was previously fixed only for dprintf and
vdprintf by the commit
commit 7ca890b88e6ab7624afb1742a9fffb37ad5b3fc3
Author: Ulrich Drepper <drepper@redhat.com>
Date: Wed Feb 24 16:07:57 2010 -0800
Fix reporting of I/O errors in *dprintf functions.
This patch adds a test case to avoid regressions.
Tested for powerpc and powerpc64le.
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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.
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The resulting object file is statically linked into applications, so
it is desirable to have (formal) stack protector coverage there.
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These unmangled function pointers reside on the heap and could
be targeted by exploit writers, effectively bypassing libio vtable
validation. Instead, we ignore these pointers and always call
malloc or free.
In theory, this is a backwards-incompatible change, but using the
global heap instead of the user-supplied callback functions should
have little application impact. (The old libstdc++ implementation
exposed this functionality via a public, undocumented constructor
in its strstreambuf class.)
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No glibc configuration uses the present debug/backtrace.c, whereas
several #include the x86_64 version. The x86_64 version is
effectively a generic one (using _Unwind_Backtrace from libgcc, which
works much more reliably than the built-in functions used by
debug/backtrace.c). This patch moves it to debug/backtrace.c and
removes all the #includes of the x86_64 version from other
architectures which are no longer required.
I do not know whether all the other architecture-specific backtrace
implementations that are based on _Unwind_Backtrace are required, or
whether, where their differences from the generic version do something
useful, suitable hooks could be added to the generic version to reduce
the duplication involved.
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.
* sysdeps/x86_64/backtrace.c: Move to ....
* debug/backtrace.c: ... here.
* sysdeps/aarch64/backtrace.c: Remove file.
* sysdeps/alpha/backtrace.c: Likewise.
* sysdeps/hppa/backtrace.c: Likewise.
* sysdeps/ia64/backtrace.c: Likewise.
* sysdeps/mips/backtrace.c: Likewise.
* sysdeps/nios2/backtrace.c: Likewise.
* sysdeps/riscv/backtrace.c: Likewise.
* sysdeps/sh/backtrace.c: Likewise.
* sysdeps/tile/backtrace.c: Likewise.
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This entirely mechanical (except for some indentation fixups) patch
replaces all uses of _IO_file_flags with _flags and removes the #define.
Installed stripped libraries and executables are unchanged by this patch.
* libio/libio.h (_IO_file_flags): Remove macro.
All uses changed to _flags.
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This patch eliminates the "compatibility defines"
_IO_UNIFIED_JUMPTABLES (always defined to 1, used in a number of #ifs
which are therefore always false), _STDIO_USES_IOSTREAM (unused),
__HAVE_COLUMN (unused), _IO_BE (replaced with __glibc_unlikely), and
yet another redundant definition of EOF.
Installed stripped libraries are unchanged by this patch.
* libio/libio.h (_IO_UNIFIED_JUMPTABLES, _STDIO_USES_IOSTREAM)
(__HAVE_COLUMN, _IO_BE): Don't define.
(_IO_peekc_unlocked, _IO_getwc_unlocked, _IO_putwc_unlocked)
(_IO_fwide_maybe_incompatible): Use __glibc_unlikely.
* libio/libioP.h (EOF): Don't define.
* libio/iofdopen.c, libio/iofopen.c, libio/iopopen.c
* libio/iovdprintf.c, libio/oldiofdopen.c, libio/oldiofopen.c
* libio/oldiopopen.c, debug/vdprintf_chk.c: Remove #if block
testing _IO_UNIFIED_JUMPTABLES.
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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.
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I've updated copyright dates in glibc for 2018. This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.
Please remember to include 2018 in the dates for any new files added
in future (which means updating any existing uncommitted patches you
have that add new files to use the new copyright dates in them).
* NEWS: Update copyright dates.
* catgets/gencat.c (print_version): Likewise.
* csu/version.c (banner): Likewise.
* debug/catchsegv.sh: Likewise.
* debug/pcprofiledump.c (print_version): Likewise.
* debug/xtrace.sh (do_version): Likewise.
* elf/ldconfig.c (print_version): Likewise.
* elf/ldd.bash.in: Likewise.
* elf/pldd.c (print_version): Likewise.
* elf/sotruss.sh: Likewise.
* elf/sprof.c (print_version): Likewise.
* iconv/iconv_prog.c (print_version): Likewise.
* iconv/iconvconfig.c (print_version): Likewise.
* locale/programs/locale.c (print_version): Likewise.
* locale/programs/localedef.c (print_version): Likewise.
* login/programs/pt_chown.c (print_version): Likewise.
* malloc/memusage.sh (do_version): Likewise.
* malloc/memusagestat.c (print_version): Likewise.
* malloc/mtrace.pl: Likewise.
* manual/libc.texinfo: Likewise.
* nptl/version.c (banner): Likewise.
* nscd/nscd.c (print_version): Likewise.
* nss/getent.c (print_version): Likewise.
* nss/makedb.c (print_version): Likewise.
* posix/getconf.c (main): Likewise.
* scripts/test-installation.pl: Likewise.
* sysdeps/unix/sysv/linux/lddlibc4.c (main): 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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Replace = with += in CFLAGS-xxx.c and CPPFLAGS-xxx.c to allow Makefile
under sysdeps to define CFLAGS-xx.c and CPPFLAGS-xxx.c.
* argp/Makefile (CFLAGS-argp-help.c): Replace = with +=.
(CFLAGS-argp-parse.c): Likewise.
(CFLAGS-argp-fmtstream.c): Likewise.
* crypt/Makefile (CPPFLAGS-sha256-crypt.c): Likewise.
(CPPFLAGS-sha512-crypt.c): Likewise.
(CPPFLAGS-md5-crypt.c): Likewise.
* debug/Makefile (CFLAGS-stack_chk_fail.c): Likewise.
(CFLAGS-stack_chk_fail_local.c): Likewise.
(CFLAGS-backtrace.c): Likewise.
(CFLAGS-sprintf_chk.c): Likewise.
(CFLAGS-snprintf_chk.c): Likewise.
(CFLAGS-vsprintf_chk.c): Likewise.
(CFLAGS-vsnprintf_chk.c): Likewise.
(CFLAGS-asprintf_chk.c): Likewise.
(CFLAGS-vasprintf_chk.c): Likewise.
(CFLAGS-obprintf_chk.c): Likewise.
(CFLAGS-dprintf_chk.c): Likewise.
(CFLAGS-vdprintf_chk.c): Likewise.
(CFLAGS-printf_chk.c): Likewise.
(CFLAGS-fprintf_chk.c): Likewise.
(CFLAGS-vprintf_chk.c): Likewise.
(CFLAGS-vfprintf_chk.c): Likewise.
(CFLAGS-gets_chk.c): Likewise.
(CFLAGS-fgets_chk.c): Likewise.
(CFLAGS-fgets_u_chk.c): Likewise.
(CFLAGS-fread_chk.c): Likewise.
(CFLAGS-fread_u_chk.c): Likewise.
(CFLAGS-swprintf_chk.c): Likewise.
(CFLAGS-vswprintf_chk.c): Likewise.
(CFLAGS-wprintf_chk.c): Likewise.
(CFLAGS-fwprintf_chk.c): Likewise.
(CFLAGS-vwprintf_chk.c): Likewise.
(CFLAGS-vfwprintf_chk.c): Likewise.
(CFLAGS-fgetws_chk.c): Likewise.
(CFLAGS-fgetws_u_chk.c): Likewise.
(CFLAGS-read_chk.c): Likewise.
(CFLAGS-pread_chk.c): Likewise.
(CFLAGS-pread64_chk.c): Likewise.
(CFLAGS-recv_chk.c): Likewise.
(CFLAGS-recvfrom_chk.c): Likewise.
(CFLAGS-tst-longjmp_chk.c): Likewise.
(CPPFLAGS-tst-longjmp_chk.c): Likewise.
(CFLAGS-tst-longjmp_chk2.c): Likewise.
(CPPFLAGS-tst-longjmp_chk2.c): Likewise.
(CFLAGS-tst-longjmp_chk3.c): Likewise.
(CPPFLAGS-tst-longjmp_chk3.c): Likewise.
(CFLAGS-tst-chk1.c): Likewise.
(CFLAGS-tst-chk2.c): Likewise.
(CFLAGS-tst-chk3.c): Likewise.
(CFLAGS-tst-chk4.cc): Likewise.
(CFLAGS-tst-chk5.cc): Likewise.
(CFLAGS-tst-chk6.cc): Likewise.
(CFLAGS-tst-lfschk1.c): Likewise.
(CFLAGS-tst-lfschk2.c): Likewise.
(CFLAGS-tst-lfschk3.c): Likewise.
(CFLAGS-tst-lfschk4.cc): Likewise.
(CFLAGS-tst-lfschk5.cc): Likewise.
(CFLAGS-tst-lfschk6.cc): Likewise.
(CFLAGS-tst-ssp-1.c): Likewise.
* dirent/Makefile (CFLAGS-scandir.c): Likewise.
(CFLAGS-scandir64.c): Likewise.
(CFLAGS-scandir-tail.c): Likewise.
(CFLAGS-scandir64-tail.c): Likewise.
* elf/Makefile (CPPFLAGS-dl-tunables.c): Likewise.
(CFLAGS-dl-tunables.c): Likewise.
(CFLAGS-dl-runtime.c): Likewise.
(CFLAGS-dl-lookup.c): Likewise.
(CFLAGS-dl-iterate-phdr.c): Likewise.
(CFLAGS-vismain.c): Likewise.
(CFLAGS-tst-linkall-static.c): Likewise.
(CFLAGS-tst-linkall-static.c): Likewise.
(CPPFLAGS-dl-load.c): Likewise.
(CFLAGS-ldconfig.c): Likewise.
(CFLAGS-dl-cache.c): Likewise.
(CFLAGS-cache.c): Likewise.
(CFLAGS-rtld.c): Likewise.
(CFLAGS-multiload.c): Likewise.
(CFLAGS-filtmod1.c): Likewise.
(CFLAGS-tst-align.c): Likewise.
(CFLAGS-tst-align2.c): Likewise.
(CFLAGS-tst-alignmod.c): Likewise.
(CFLAGS-tst-alignmod2.c): Likewise.
(CPPFLAGS-tst-execstack.c): Likewise.
(CFLAGS-tst-ptrguard1-static.c): Likewise.
(CFLAGS-tst-latepthreadmod.c): Likewise.
* grp/Makefile (CFLAGS-getgrgid_r.c): Likewise.
(CFLAGS-getgrnam_r.c): Likewise.
(CFLAGS-getgrent_r.c): Likewise.
(CFLAGS-getgrent.c): Likewise.
(CFLAGS-fgetgrent.c): Likewise.
(CFLAGS-fgetgrent_r.c): Likewise.
(CFLAGS-putgrent.c): Likewise.
(CFLAGS-initgroups.c): Likewise.
(CFLAGS-getgrgid.c): Likewise.
* gshadow/Makefile (CFLAGS-getsgent_r.c): Likewise.
(CFLAGS-getsgent.c): Likewise.
(CFLAGS-fgetsgent.c): Likewise.
(CFLAGS-fgetsgent_r.c): Likewise.
(CFLAGS-putsgent.c): Likewise.
(CFLAGS-getsgnam.c): Likewise.
(CFLAGS-getsgnam_r.c): Likewise.
* iconv/Makefile (CFLAGS-iconv_prog.c): Likewise.
(CFLAGS-iconv_charmap.c): Likewise.
(CFLAGS-dummy-repertoire.c): Likewise.
(CFLAGS-charmap.c): Likewise.
(CFLAGS-linereader.c): Likewise.
(CFLAGS-simple-hash.c): Likewise.
(CFLAGS-gconv_conf.c): Likewise.
(CFLAGS-iconvconfig.c): Likewise.
* inet/Makefile (CFLAGS-gethstbyad_r.c): Likewise.
(CFLAGS-gethstbyad.c): Likewise.
(CFLAGS-gethstbynm_r.c): Likewise.
(CFLAGS-gethstbynm.c): Likewise.
(CFLAGS-gethstbynm2_r.c): Likewise.
(CFLAGS-gethstbynm2.c): Likewise.
(CFLAGS-gethstent_r.c): Likewise.
(CFLAGS-gethstent.c): Likewise.
(CFLAGS-rcmd.c): Likewise.
(CFLAGS-getnetbynm_r.c): Likewise.
(CFLAGS-getnetbynm.c): Likewise.
(CFLAGS-getnetbyad_r.c): Likewise.
(CFLAGS-getnetbyad.c): Likewise.
(CFLAGS-getnetent_r.c): Likewise.
(CFLAGS-getnetent.c): Likewise.
(CFLAGS-getaliasent_r.c): Likewise.
(CFLAGS-getaliasent.c): Likewise.
(CFLAGS-getrpcent_r.c): Likewise.
(CFLAGS-getrpcent.c): Likewise.
(CFLAGS-getservent_r.c): Likewise.
(CFLAGS-getservent.c): Likewise.
(CFLAGS-getprtent_r.c): Likewise.
(CFLAGS-getprtent.c): Likewise.
(CFLAGS-either_ntoh.c): Likewise.
(CFLAGS-either_hton.c): Likewise.
(CFLAGS-getnetgrent.c): Likewise.
(CFLAGS-getnetgrent_r.c): Likewise.
(CFLAGS-tst-checks-posix.c): Likewise.
(CFLAGS-tst-sockaddr.c): Likewise.
* intl/Makefile (CFLAGS-tst-gettext.c): Likewise.
(CFLAGS-tst-translit.c): Likewise.
(CFLAGS-tst-gettext2.c): Likewise.
(CFLAGS-tst-codeset.c): Likewise.
(CFLAGS-tst-gettext3.c): Likewise.
(CFLAGS-tst-gettext4.c): Likewise.
(CFLAGS-tst-gettext5.c): Likewise.
(CFLAGS-tst-gettext6.c): Likewise.
* io/Makefile (CFLAGS-open.c): Likewise.
(CFLAGS-open64.c): Likewise.
(CFLAGS-creat.c): Likewise.
(CFLAGS-creat64.c): Likewise.
(CFLAGS-fcntl.c): Likewise.
(CFLAGS-poll.c): Likewise.
(CFLAGS-ppoll.c): Likewise.
(CFLAGS-lockf.c): Likewise.
(CFLAGS-statfs.c): Likewise.
(CFLAGS-fstatfs.c): Likewise.
(CFLAGS-statvfs.c): Likewise.
(CFLAGS-fstatvfs.c): Likewise.
(CFLAGS-fts.c): Likewise.
(CFLAGS-fts64.c): Likewise.
(CFLAGS-ftw.c): Likewise.
(CFLAGS-ftw64.c): Likewise.
(CFLAGS-lockf.c): Likewise.
(CFLAGS-posix_fallocate.c): Likewise.
(CFLAGS-posix_fallocate64.c): Likewise.
(CFLAGS-fallocate.c): Likewise.
(CFLAGS-fallocate64.c): Likewise.
(CFLAGS-read.c): Likewise.
(CFLAGS-write.c): Likewise.
(CFLAGS-test-stat.c): Likewise.
(CFLAGS-test-lfs.c): Likewise.
* libio/Makefile (CFLAGS-fileops.c): Likewise.
(CFLAGS-fputc.c): Likewise.
(CFLAGS-fputwc.c): Likewise.
(CFLAGS-freopen64.c): Likewise.
(CFLAGS-freopen.c): Likewise.
(CFLAGS-fseek.c): Likewise.
(CFLAGS-fseeko64.c): Likewise.
(CFLAGS-fseeko.c): Likewise.
(CFLAGS-ftello64.c): Likewise.
(CFLAGS-ftello.c): Likewise.
(CFLAGS-fwide.c): Likewise.
(CFLAGS-genops.c): Likewise.
(CFLAGS-getc.c): Likewise.
(CFLAGS-getchar.c): Likewise.
(CFLAGS-getwc.c): Likewise.
(CFLAGS-getwchar.c): Likewise.
(CFLAGS-iofclose.c): Likewise.
(CFLAGS-iofflush.c): Likewise.
(CFLAGS-iofgetpos64.c): Likewise.
(CFLAGS-iofgetpos.c): Likewise.
(CFLAGS-iofgets.c): Likewise.
(CFLAGS-iofgetws.c): Likewise.
(CFLAGS-iofputs.c): Likewise.
(CFLAGS-iofputws.c): Likewise.
(CFLAGS-iofread.c): Likewise.
(CFLAGS-iofsetpos64.c): Likewise.
(CFLAGS-iofsetpos.c): Likewise.
(CFLAGS-ioftell.c): Likewise.
(CFLAGS-iofwrite.c): Likewise.
(CFLAGS-iogetdelim.c): Likewise.
(CFLAGS-iogetline.c): Likewise.
(CFLAGS-iogets.c): Likewise.
(CFLAGS-iogetwline.c): Likewise.
(CFLAGS-ioputs.c): Likewise.
(CFLAGS-ioseekoff.c): Likewise.
(CFLAGS-ioseekpos.c): Likewise.
(CFLAGS-iosetbuffer.c): Likewise.
(CFLAGS-iosetvbuf.c): Likewise.
(CFLAGS-ioungetc.c): Likewise.
(CFLAGS-ioungetwc.c): Likewise.
(CFLAGS-oldfileops.c): Likewise.
(CFLAGS-oldiofclose.c): Likewise.
(CFLAGS-oldiofgetpos64.c): Likewise.
(CFLAGS-oldiofgetpos.c): Likewise.
(CFLAGS-oldiofsetpos64.c): Likewise.
(CFLAGS-oldiofsetpos.c): Likewise.
(CFLAGS-peekc.c): Likewise.
(CFLAGS-putc.c): Likewise.
(CFLAGS-putchar.c): Likewise.
(CFLAGS-putwc.c): Likewise.
(CFLAGS-putwchar.c): Likewise.
(CFLAGS-rewind.c): Likewise.
(CFLAGS-wfileops.c): Likewise.
(CFLAGS-wgenops.c): Likewise.
(CFLAGS-oldiofopen.c): Likewise.
(CFLAGS-iofopen.c): Likewise.
(CFLAGS-iofopen64.c): Likewise.
(CFLAGS-oldtmpfile.c): Likewise.
(CFLAGS-tst_putwc.c): Likewise.
* locale/Makefile (CFLAGS-md5.c): Likewise.
(CFLAGS-charmap.c): Likewise.
(CFLAGS-locfile.c): Likewise.
(CFLAGS-charmap-dir.c): Likewise.
* login/Makefile (CFLAGS-grantpt.c): Likewise.
(CFLAGS-getpt.c): Likewise.
(CFLAGS-pt_chown.c): Likewise.
* malloc/Makefile (CFLAGS-mcheck-init.c): Likewise.
(CFLAGS-obstack.c): Likewise.
* math/Makefile (CFLAGS-test-tgmath3.c): Likewise.
(CFLAGS-test-double-vlen4-wrappers.c): Likewise.
(CFLAGS-test-double-vlen8-wrappers.c): Likewise.
(CFLAGS-test-float-vlen8-wrappers.c): Likewise.
(CFLAGS-test-float-vlen16-wrappers.c): Likewise.
(CFLAGS-test-tgmath.c): Likewise.
(CFLAGS-test-tgmath2.c): Likewise.
(CFLAGS-test-tgmath-ret.c): Likewise.
(CFLAGS-test-powl.c): Likewise.
(CFLAGS-test-snan.c): Likewise.
(CFLAGS-test-signgam-finite.c): Likewise.
(CFLAGS-test-signgam-finite-c99.c): Likewise.
(CFLAGS-test-signgam-finite-c11.c): Likewise.
(CFLAGS-test-signgam-uchar.c): Likewise.
(CFLAGS-test-signgam-uchar-init.c): Likewise.
(CFLAGS-test-signgam-uchar-static.c): Likewise.
(CFLAGS-test-signgam-uchar-init-static.c): Likewise.
(CFLAGS-test-signgam-uint.c): Likewise.
(CFLAGS-test-signgam-uint-init.c): Likewise.
(CFLAGS-test-signgam-uint-static.c): Likewise.
(CFLAGS-test-signgam-uint-init-static.c): Likewise.
(CFLAGS-test-signgam-ullong.c): Likewise.
(CFLAGS-test-signgam-ullong-init.c): Likewise.
(CFLAGS-test-signgam-ullong-static.c): Likewise.
(CFLAGS-test-signgam-ullong-init-static.c): Likewise.
(CFLAGS-test-math-cxx11.cc): Likewise.
(CFLAGS-test-math-isinff.cc): Likewise.
(CFLAGS-test-math-iszero.cc): Likewise.
(CFLAGS-test-math-issignaling.cc): Likewise.
(CFLAGS-test-math-iscanonical.cc): Likewise.
(CFLAGS-test-iszero-excess-precision.c): Likewise.
(CFLAGS-test-iseqsig-excess-precision.c): Likewise.
(CFLAGS-test-flt-eval-method.c): Likewise.
(CFLAGS-test-fe-snans-always-signal.c): Likewise.
(CFLAGS-test-finite-macros.c): Likewise.
* misc/Makefile (CFLAGS-select.c): Likewise.
(CFLAGS-tsearch.c): Likewise.
(CFLAGS-lsearch.c): Likewise.
(CFLAGS-pselect.c): Likewise.
(CFLAGS-readv.c): Likewise.
(CFLAGS-writev.c): Likewise.
(CFLAGS-preadv.c): Likewise.
(CFLAGS-preadv64.c): Likewise.
(CFLAGS-pwritev.c): Likewise.
(CFLAGS-pwritev64.c): Likewise.
(CFLAGS-preadv2.c): Likewise.
(CFLAGS-preadv64v2.c): Likewise.
(CFLAGS-pwritev2.c): Likewise.
(CFLAGS-pwritev64v2.c): Likewise.
(CFLAGS-usleep.c): Likewise.
(CFLAGS-syslog.c): Likewise.
(CFLAGS-error.c): Likewise.
(CFLAGS-getpass.c): Likewise.
(CFLAGS-mkstemp.c): Likewise.
(CFLAGS-mkstemp64.c): Likewise.
(CFLAGS-getsysstats.c): Likewise.
(CFLAGS-getusershell.c): Likewise.
(CFLAGS-err.c): Likewise.
(CFLAGS-tst-tsearch.c): Likewise.
(CFLAGS-msync.c): Likewise.
(CFLAGS-fdatasync.c): Likewise.
(CFLAGS-fsync.c): Likewise.
* nptl/Makefile (CFLAGS-nptl-init.c): Likewise.
(CFLAGS-unwind.c): Likewise.
(CFLAGS-unwind-forcedunwind.c): Likewise.
(CFLAGS-pthread_cancel.c): Likewise.
(CFLAGS-pthread_setcancelstate.c): Likewise.
(CFLAGS-pthread_setcanceltype.c): Likewise.
(CFLAGS-cancellation.c): Likewise.
(CFLAGS-libc-cancellation.c): Likewise.
(CFLAGS-pthread_exit.c): Likewise.
(CFLAGS-forward.c): Likewise.
(CFLAGS-pthread_testcancel.c): Likewise.
(CFLAGS-pthread_join.c): Likewise.
(CFLAGS-pthread_timedjoin.c): Likewise.
(CFLAGS-pthread_once.c): Likewise.
(CFLAGS-pthread_cond_wait.c): Likewise.
(CFLAGS-sem_wait.c): Likewise.
(CFLAGS-sem_timedwait.c): Likewise.
(CFLAGS-fcntl.c): Likewise.
(CFLAGS-lockf.c): Likewise.
(CFLAGS-pread.c): Likewise.
(CFLAGS-pread64.c): Likewise.
(CFLAGS-pwrite.c): Likewise.
(CFLAGS-pwrite64.c): Likewise.
(CFLAGS-wait.c): Likewise.
(CFLAGS-waitpid.c): Likewise.
(CFLAGS-sigwait.c): Likewise.
(CFLAGS-msgrcv.c): Likewise.
(CFLAGS-msgsnd.c): Likewise.
(CFLAGS-tcdrain.c): Likewise.
(CFLAGS-open.c): Likewise.
(CFLAGS-open64.c): Likewise.
(CFLAGS-pause.c): Likewise.
(CFLAGS-recv.c): Likewise.
(CFLAGS-send.c): Likewise.
(CFLAGS-accept.c): Likewise.
(CFLAGS-sendto.c): Likewise.
(CFLAGS-connect.c): Likewise.
(CFLAGS-recvfrom.c): Likewise.
(CFLAGS-recvmsg.c): Likewise.
(CFLAGS-sendmsg.c): Likewise.
(CFLAGS-close.c): Likewise.
(CFLAGS-read.c): Likewise.
(CFLAGS-write.c): Likewise.
(CFLAGS-nanosleep.c): Likewise.
(CFLAGS-sigsuspend.c): Likewise.
(CFLAGS-msync.c): Likewise.
(CFLAGS-fdatasync.c): Likewise.
(CFLAGS-fsync.c): Likewise.
(CFLAGS-pt-system.c): Likewise.
(CFLAGS-tst-cleanup2.c): Likewise.
(CFLAGS-tst-cleanupx2.c): Likewise.
(CFLAGS-flockfile.c): Likewise.
(CFLAGS-ftrylockfile.c): Likewise.
(CFLAGS-funlockfile.c): Likewise.
(CFLAGS-tst-initializers1.c): Likewise.
(CFLAGS-tst-initializers1-c89.c): Likewise.
(CFLAGS-tst-initializers1-c99.c): Likewise.
(CFLAGS-tst-initializers1-c11.c): Likewise.
(CFLAGS-tst-initializers1-gnu89.c): Likewise.
(CFLAGS-tst-initializers1-gnu99.c): Likewise.
(CFLAGS-tst-initializers1-gnu11.c): Likewise.
* nscd/Makefile (CFLAGS-nscd_getpw_r.c): Likewise.
(CFLAGS-nscd_getgr_r.c): Likewise.
(CFLAGS-nscd_gethst_r.c): Likewise.
(CFLAGS-nscd_getai.c): Likewise.
(CFLAGS-nscd_initgroups.c): Likewise.
* posix/Makefile (CFLAGS-getaddrinfo.c): Likewise.
(CFLAGS-pause.c): Likewise.
(CFLAGS-pread.c): Likewise.
(CFLAGS-pread64.c): Likewise.
(CFLAGS-pwrite.c): Likewise.
(CFLAGS-pwrite64.c): Likewise.
(CFLAGS-sleep.c): Likewise.
(CFLAGS-wait.c): Likewise.
(CFLAGS-waitid.c): Likewise.
(CFLAGS-waitpid.c): Likewise.
(CFLAGS-getopt.c): Likewise.
(CFLAGS-wordexp.c): Likewise.
(CFLAGS-sysconf.c): Likewise.
(CFLAGS-pathconf.c): Likewise.
(CFLAGS-fpathconf.c): Likewise.
(CFLAGS-spawn.c): Likewise.
(CFLAGS-spawnp.c): Likewise.
(CFLAGS-spawni.c): Likewise.
(CFLAGS-glob.c): Likewise.
(CFLAGS-glob64.c): Likewise.
(CFLAGS-getconf.c): Likewise.
(CFLAGS-nanosleep.c): Likewise.
* pwd/Makefile (CFLAGS-getpwent_r.c): Likewise.
(CFLAGS-getpwent.c): Likewise.
(CFLAGS-getpw.c): Likewise.
(CFLAGS-fgetpwent_r.c): Likewise.
* resolv/Makefile (CFLAGS-res_hconf.c): Likewise.
* rt/Makefile (CFLAGS-aio_suspend.c): Likewise.
(CFLAGS-mq_timedreceive.c): Likewise.
(CFLAGS-mq_timedsend.c): Likewise.
(CFLAGS-clock_nanosleep.c): Likewise.
(CFLAGS-librt-cancellation.c): Likewise.
* shadow/Makefile (CFLAGS-getspent_r.c): Likewise.
(CFLAGS-getspent.c): Likewise.
(CFLAGS-fgetspent.c): Likewise.
(CFLAGS-fgetspent_r.c): Likewise.
(CFLAGS-putspent.c): Likewise.
(CFLAGS-getspnam.c): Likewise.
(CFLAGS-getspnam_r.c): Likewise.
* signal/Makefile (CFLAGS-sigpause.c): Likewise.
(CFLAGS-sigsuspend.c): Likewise.
(CFLAGS-sigtimedwait.c): Likewise.
(CFLAGS-sigwait.c): Likewise.
(CFLAGS-sigwaitinfo.c): Likewise.
(CFLAGS-sigreturn.c): Likewise.
* stdio-common/Makefile (CFLAGS-vfprintf.c): Likewise.
(CFLAGS-vfwprintf.c): Likewise.
(CFLAGS-tmpfile.c): Likewise.
(CFLAGS-tmpfile64.c): Likewise.
(CFLAGS-tempname.c): Likewise.
(CFLAGS-psignal.c): Likewise.
(CFLAGS-vprintf.c): Likewise.
(CFLAGS-cuserid.c): Likewise.
(CFLAGS-errlist.c): Likewise.
(CFLAGS-siglist.c): Likewise.
(CFLAGS-scanf15.c): Likewise.
(CFLAGS-scanf17.c): Likewise.
* stdlib/Makefile (CFLAGS-bsearch.c): Likewise.
(CFLAGS-msort.c): Likewise.
(CFLAGS-qsort.c): Likewise.
(CFLAGS-system.c): Likewise.
(CFLAGS-fmtmsg.c): Likewise.
(CFLAGS-strfmon.c): Likewise.
(CFLAGS-strfmon_l.c): Likewise.
(CFLAGS-strfromd.c): Likewise.
(CFLAGS-strfromf.c): Likewise.
(CFLAGS-strfroml.c): Likewise.
(CFLAGS-tst-bsearch.c): Likewise.
(CFLAGS-tst-qsort.c): Likewise.
(CFLAGS-tst-makecontext2.c): Likewise.
* sunrpc/Makefile (CFLAGS-xbootparam_prot.c): Likewise.
(CFLAGS-xnlm_prot.c): Likewise.
(CFLAGS-xrstat.c): Likewise.
(CFLAGS-xyppasswd.c): Likewise.
(CFLAGS-xklm_prot.c): Likewise.
(CFLAGS-xrex.c): Likewise.
(CFLAGS-xsm_inter.c): Likewise.
(CFLAGS-xmount.c): Likewise.
(CFLAGS-xrusers.c): Likewise.
(CFLAGS-xspray.c): Likewise.
(CFLAGS-xnfs_prot.c): Likewise.
(CFLAGS-xrquota.c): Likewise.
(CFLAGS-xkey_prot.c): Likewise.
(CFLAGS-auth_unix.c): Likewise.
(CFLAGS-key_call.c): Likewise.
(CFLAGS-pmap_rmt.c): Likewise.
(CFLAGS-clnt_perr.c): Likewise.
(CFLAGS-openchild.c): Likewise.
* sysvipc/Makefile (CFLAGS-msgrcv.c): Likewise.
(CFLAGS-msgsnd.c): Likewise.
* termios/Makefile (CFLAGS-tcdrain.c): Likewise.
* time/Makefile (CFLAGS-tzfile.c): Likewise.
(CFLAGS-tzset.c): Likewise.
(CFLAGS-getdate.c): Likewise.
(CFLAGS-test_time.c): Likewise.
(CPPFLAGS-tst-tzname.c): Likewise.
* timezone/Makefile (CFLAGS-zdump.c): Likewise.
(CFLAGS-zic.c): Likewise.
* wcsmbs/Makefile (CFLAGS-wcwidth.c): Likewise.
(CFLAGS-wcswidth.c): Likewise.
(CFLAGS-wcstol.c): Likewise.
(CFLAGS-wcstoul.c): Likewise.
(CFLAGS-wcstoll.c): Likewise.
(CFLAGS-wcstoull.c): Likewise.
(CFLAGS-wcstod.c): Likewise.
(CFLAGS-wcstold.c): Likewise.
(CFLAGS-wcstof128.c): Likewise.
(CFLAGS-wcstof.c): Likewise.
(CFLAGS-wcstol_l.c): Likewise.
(CFLAGS-wcstoul_l.c): Likewise.
(CFLAGS-wcstoll_l.c): Likewise.
(CFLAGS-wcstoull_l.c): Likewise.
(CFLAGS-wcstod_l.c): Likewise.
(CFLAGS-wcstold_l.c): Likewise.
(CFLAGS-wcstof128_l.c): Likewise.
(CFLAGS-wcstof_l.c): Likewise.
(CPPFLAGS-tst-wchar-h.c): Likewise.
(CPPFLAGS-wcstold_l.c): Likewise.
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
|
|
To support Shadow Stack (SHSTK) in Intel Control-flow Enforcement
Technology (CET) in setjmp/longjmp, we need to save shadow stack
pointer in jmp_buf. The __saved_mask field in jmp_buf has type
of __sigset_t. On Linux, __sigset_t is defined as
#define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
typedef struct
{
unsigned long int __val[_SIGSET_NWORDS];
} __sigset_t;
which is much bigger than expected by the __sigprocmask system call,
which has
typedef struct {
unsigned long sig[_NSIG_WORDS];
} sigset_t;
For Linux/x86, we can shrink __sigset_t used by __saved_mask in jmp_buf
to add paddings for shadow stack pointer. As long as the new __sigset_t
is not smaller than sigset_t expected by the __sigprocmask system call,
it should work correctly.
This patch adds an internal header file, <setjmpP.h>, to define
__jmp_buf_sigset_t for __saved_mask in jmp_buf for Linux/x86 with a
space to store shadow stack pointer. It verifies __jmp_buf_sigset_t has
the suitable size for the __sigprocmask system call. A run-time test,
tst-saved_mask-1.c, is added to verify that size of __jmp_buf_sigset_t
is sufficient. If its size is too small, the test fails with
rt_sigprocmask(SIG_SETMASK, strace: umoven: short read (4 < 8) @0x7fa8aa28effc
0x7fa8aa28effc, NULL, 8) = -1 EFAULT (Bad address)
rt_sigprocmask(SIG_SETMASK, strace: umoven: short read (4 < 8) @0x7fa8aa28effc
0x7fa8aa28effc, NULL, 8) = -1 EFAULT (Bad address)
rt_sigprocmask(SIG_SETMASK, NULL, 0x7fa8aa28effc, 8) = -1 EFAULT (Bad address)
exit_group(1) = ?
Tested with build-many-glibcs.py.
* debug/longjmp_chk.c: Include <setjmpP.h> instead of
<setjmp.h>.
* setjmp/longjmp.c: Include <setjmpP.h> instead of <setjmp.h>.
(__libc_siglongjmp): Cast &env[0].__saved_mask to "sigset_t *".
* setjmp/sigjmp.c: Include <setjmpP.h> instead of <setjmp.h>.
(__sigjmp_save): Cast &env[0].__saved_mask to "sigset_t *".
* sysdeps/generic/setjmpP.h: New file.
* sysdeps/unix/sysv/linux/x86/jmp_buf-ssp.sym: Likewise.
* sysdeps/unix/sysv/linux/x86/setjmpP.h: Likewise.
* sysdeps/unix/sysv/linux/x86/tst-saved_mask-1.c: Likewise.
* sysdeps/unix/sysv/linux/x86/Makefile (gen-as-const-headers):
Add jmp_buf-ssp.sym.
(tests): Add tst-saved_mask-1.
|
|
Add unwind info to __libc_start_main so that unwinding continues one
extra level to _start. Similarly add unwind info to backtrace.
Given many targets require this, do this in a general way.
* csu/Makefile: Add -funwind-tables to libc-start.c.
* debug/Makefile: Add -funwind-tables to backtrace.c.
* sysdeps/aarch64/Makefile: Remove CFLAGS-backtrace.c.
* sysdeps/arm/Makefile: Likewise.
* sysdeps/i386/Makefile: Likewise.
* sysdeps/m68k/Makefile: Likewise.
* sysdeps/mips/Makefile: Likewise.
* sysdeps/nios2/Makefile: Likewise.
* sysdeps/sh/Makefile: Likewise.
* sysdeps/sparc/Makefile: Likewise.
|
|
debug/pcprofiledump.c contains code that tries to handle other-endian
data. This uses a condition "(word & 0xfffffff0) == bswap_32
(0xdeb00000)". This condition is always false (the LHS always has the
low four bits zero, the RHS doesn't); a correct comparison would use
0x0fffffff. This results in -Werror=tautological-compare build
failures with the tile version of bits/byteswap.h and mainline GCC.
https://sourceware.org/ml/libc-testresults/2017-q3/msg00400.html
pcprofiledump.c: In function 'main':
pcprofiledump.c:118:39: error: bitwise comparison always evaluates to false
[-Werror=tautological-compare]
int must_swap = (word & 0xfffffff0) == bswap_32 (0xdeb00000);
^~
This patch fixes the condition. Tested for x86_64, and with
build-many-glibcs.py that it fixes the build for tilegx-linux-gnu.
(Note that I have not tested the actual pcprofiledump functionality,
native or cross endian, which lacks any testsuite coverage.)
[BZ #22086]
* debug/pcprofiledump.c (main): Use byte-swapped mask when
comparing word with byte-swapped constant.
|
|
Move ____longjmp_chk prototype to include/setjmp.h and add
attribute_hidden.
* debug/longjmp_chk.c (____longjmp_chk): Moved to ...
* include/setjmp.h (____longjmp_chk): Here. Add
attribute_hidden.
|
|
__fortify_fail is called across DSO boundaries, so it should not
use a non-standard calling convention.
|
|
__libc_argv[0] points to address on stack and __libc_secure_getenv
accesses environment variables which are on stack. We should avoid
accessing stack when stack is corrupted.
This patch also renames function argument in __for |
