According to the OpenBSD man page, "A Replacement Call for Random". It
offers high quality random numbers derived from input data obtained by
the OpenBSD specific getentropy() system call which is declared in
<unistd.h> and must be implemented for each Newlib port externally. The
arc4random() functions are used for example in LibreSSL and OpenSSH.
Cygwin provides currently its own implementation of the arc4random
family. Maybe it makes sense to use this getentropy() implementation:
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libcrypto/crypto/getentropy_win.c?rev=1.4&content-type=text/x-cvsweb-markup
* libc/include/stdlib.h (arc4random): Declare if __BSD_VISIBLE.
(arc4random_buf): Likewise.
(arc4random_uniform): Likewise.
* libc/include/sys/unistd.h (getentropy): Likewise.
* libc/include/machine/_arc4random.h: New file.
* libc/stdlib/arc4random.c: Likewise.
* libc/stdlib/arc4random.h: Likewise.
* libc/stdlib/arc4random_uniform.c: Likewise.
* libc/stdlib/chacha_private.h: Likewise.
* libc/sys/rtems/include/machine/_arc4random.h: Likewise.
* libc/stdlib/Makefile.am (EXTENDED_SOURCES): Add arc4random.c
and arc4random_uniform.c.
* libc/stdlib/Makefile.in: Regenerate.
This function is used by LibreSSL and OpenSSH and is provided by the
OpenBSD libc.
* libc/include/string.h (timingsafe_memcmp): Declare.
* libc/string/timingsafe_memcmp.c: New file.
* libc/string/Makefile.am: Add new file.
* libc/string/Makefile.in: Regenerate.
This function is used by LibreSSL and OpenSSH and is provided by the
OpenBSD libc.
* libc/include/string.h (timingsafe_bcmp): Declare.
* libc/string/timingsafe_bcmp.c: New file.
* libc/string/Makefile.am: Add new file.
* libc/string/Makefile.in: Regenerate.
This function is used by LibreSSL and OpenSSH and is provided by the
OpenBSD libc.
* libc/include/string.h (explicit_bzero): Declare.
* libc/string/explicit_bzero.c: New file.
* libc/string/Makefile.am: Add new file.
* libc/string/Makefile.in: Regenerate.
This guard is used by FreeBSD <sys/socket.h> for example. The FreeBSD
network stack is used in RTEMS.
* newlib/libc/include/sys/types.h (ssize_t): Guard by
_SSIZE_T_DECLARED.
The u_int/u_char/etc. BSD types are needed by Cygwin's netinet/*.h
headers, so they always need to be available.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
The inclusion of <sys/select.h> is required also by POSIX.1-2001.
setitimer is XSI, and futimesat is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Replace all !_POSIX_SOURCE with BSD. All *at functions depend on
ATFILE; futimens is POSIX.1-2008.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, use proper internal macros for functions, including those
marked as target-specific. Use ATFILE for all *at functions.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, remove __STRICT_ANSI__ and use the proper internal macros.
bcmp, bcopy, bzero, index, and rindex were in POSIX prior to 2008.
memrchr is GNU.
strdup and strndup are POSIX.1-2008.
The int-returning form of strerror_r is POSIX.1-2001.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, simplify the C99/C11 conditionals, and replace
__STRICT_ANSI__ with the proper internal POSIX macros. The _*_r
reentrant functions need not be guarded (and most haven't been) because
such names in the global scope are reserved to the implementation.
atoff is unique to newlib.
dtoa is not actually exported (_dtoa_r is used internally), is
nonstandard, and the declaration conflicts with the code included in
MySQL, NSPR, and SpiderMonkey.
mktemp was removed in POSIX.1-2001.
The qsort_r declarations are reordered so that the GNU version retains
precedence.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Throughout, remove references to __STRICT_ANSI__ and use the proper
internal macros and versions for C99, POSIX, ATFILE for the various *at
functions, or LARGEFILE for fseeko and ftello.
[v]asprintf are GNU extensions, but the *iprintf, *iscanf, and
*asnprintf functions are unique to newlib.
getw and putw were removed from POSIX.1-2001. funopen is BSD, and
fopencookie is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Use proper internal macros for BSD sig_t and GNU sighandler_t.
sigaltstack and friends are XSI even in SUSv4 but in glibc are
nonetheless handled as POSIX.1-2008 (not 2001).
The requirement for the ucontext_t typedef in signal.h was XSI prior to
POSIX.1-2008.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Simplify the C99 conditionals. Mark the drem and gamma functions as
BSD|SVID, the Bessel double functions also XSI and the floats also SUSv3.
signgam is BSD|SVID|XSI, and matherr is SVID. Finally, use the internal
macros to control the symbolic constants.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
_PATH_GROUP is a BSDism. getgr*_r are BSD|SVID|POSIX, and the *grent
functions are BSD|SVID|XPG4v2.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Most of the !_POSIX_SOURCE code is BSD, although ironically some were
added to POSIX.1-2001.
Use the ATFILE conditional for most of the *at functions, except
futimesat which is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
MAXNAMLEN is a BSDism.
Use the proper internal macros instead of !_POSIX_SOURCE. telldir and
seekdir are XSI, scandir and alphasort are POSIX.1-2008, and scandirat
is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
This is the complete rework of the feature tests macros for better
compatibility with GNU libc, primarily based on the Linux man pages
documentation:
http://man7.org/linux/man-pages/man7/feature_test_macros.7.html
The previous implementation was flawed in its approach that macros were
often used to hide symbols if defined (e.g. !defined __STRICT_ANSI__ or
!defined _POSIX_SOURCE), whereas the approach of glibc is that these macros
make symbols available when defined (e.g. defined _BSD_SOURCE, or as used
internally, #if __BSD_VISIBLE). As much open-source software is written
with glibc in mind, this necessitated patching numerous packages just to
compile.
In particular, __STRICT_ANSI__ (which is defined by gcc -ansi or -std=c*)
was given too much importance. This implementation limits the influence
of __STRICT_ANSI__ to controlling the default when no other feature test
macros are defined, and to the inclusion of <alloca.h> in <stdlib.h> as
documented. These are the only places where __STRICT_ANSI__ should be
tested.
The following macros are now accepted: _ATFILE_SOURCE, _BSD_SOURCE,
_DEFAULT_SOURCE, _ISOC99_SOURCE, _ISOC11_SOURCE, _LARGEFILE_SOURCE,
_SVID_SOURCE, _XOPEN_SOURCE_EXTENDED.
The existing __*_VISIBLE internal macros have been kept mostly
compatible with the original BSD implementation, with some changes to
the criteria which controls them. Several more macros in this style
have been added where needed for concision or accuracy.
Enabling C++11 or newer in the compiler also enables C99 and C11
functions. Doing so should help move away from the need to define
_GNU_SOURCE in g++ for _GLIBCXX_USE_C99 support as on Linux:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51749
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Newlib's setvbuf function is very old and has two bugs:
- It sets the SRD/SWR flags incorrectly in case of files opened for
reading and writing.
See https://cygwin.com/ml/cygwin/2016-03/msg00180.html
for a desription of the effect.
- It always sets the buffer size to BUFSIZ if it's not provided by
the application, independent of the optimal blocksize for the
underlying IO device.
Update setvbuf to latest code from OpenBSD to fix both problems.
* libc/stdio/setvbuf.c (setvbuf): Import latest OpenBSD
implementation.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
To fix a long-standing setvbuf bug, import __swhatbuf function from
OpenBSD and only slightly rearrange for newlib.
* libc/stdio/local.h (__swhatbuf_r): Declare.
* libc/stdio/makebuf (__smakebuf_r): New function.
(__smakebuf_r): Drop file handling code and call __smakebuf_r.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Per the preceeding comment this inline code is disabled since 1993(!)
because of a bug in GCC at the time. This is long gone and the equivalent
inline code is used in the BSDs for quite some time. Enable this code for
newlib as well.
* libc/include/stdio.h (__sputc_r): Enable GCC inline code. Add
handling for targets defining __SCLE.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* pthread.h: Add prototypes for pthread_condattr_getclock(),
pthread_condattr_setclock(), pthread_setschedpri(),
pthread_getcpuclockid(), pthread_getconcurrency(), and
pthread_setconcurrency(). Also cleaned up file header to
remove CVS Id string.
* sys/types.h: Add clock ID to pthread_condattr_t.
* libc/include/sys/features.h: Set POSIX option macros from 200112L
to 200809L for Cygwin.
(_POSIX_SPAWN): Set to 200809L for Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Currently, the newlib version information needs to be updated in two places:
- newlib/acinclude.m4
- newlib/libc/include/sys/features.h
The goal of this patch is to:
- supply a single location for defining the newlib version
information: newlib/acinclude.m4
- define __NEWLIB__, __NEWLIB_MINOR__ and __NEWLIB_PATCHLEVEL__
This is in line with what gcc does for its version macros. See:
https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
This patch moves the definition of the _NEWLIB_VERSION, __NEWLIB__
and __NEWLIB_MINOR__ macros from newlib/libc/include/sys/features.h,
to the newly generated newlib/_newlib_version.h file. Additionally,
the __NEWLIB_PATCHLEVEL__ macro was created, for completeness.
In order to stay backwards compatible, newlib/_newlib_version.h gets
included by newlib/newlib.h and newlib/libc/include/sys/features.h.
Note: This patch does _not_ include the modifications to the following
files, as these should all be generated any way.
*Makefile.in,
*aclocal.m4,
*configure
stamp-* files
Signed-off-by: Pieter du Preez <pdupreez@gmail.com>
Any attempt to use isnanf, isinff, or finitef from <ieeefp.h> with
GCC 5 on platforms other than SPU result in a "lvalue required as
unary '&' operand" error.
newlib/libc/
* include/ieeefp.h (__ieeefp_isnanf): Remove broken macro.
(__ieeefp_isinff, __ieeefp_finitef): Ditto.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
This patch fixes the problem reported in
https://cygwin.com/ml/cygwin/2016-02/msg00014.html
The 2009 changes to handle multibyte decimal point and thousands
separator missed to take the length of a multibyte decimal point into
account when computing the field size.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Current mesa expects stdio.h to prototype fileno() when compiling with gcc
-std=c99 -D_XOPEN_SOURCE
Fix the 'POSIX 1003.1:2001' block in stdio.h to prototype functions if not
__STRICT_ANSI__, or _BSD_SOURCE, _POSIX_C_SOURCE or _XOPEN_SOURCE are defined
appropriately
As far as I can tell, despite being in this block, setbuffer() and setlinebuf()
are BSDisms which aren't in POSIX 1003.1:2001
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Non-reentrant system calls version implies both MISSING_SYSCALL_NAMES
and REENTRANT_SYSCALL_PROVIDED macros to be defined.
Being coupled with --enable-newlib-nano-malloc knob it breaks the build:
bash-4.3$ ../newlib-2.3.0.20160104/configure CC_FOR_TARGET=gcc
AR_FOR_TARGET=ar RANLIB_FOR_TARGET=ranlib CFLAGS_FOR_TARGET="-m32
-DMISSING_SYSCALL_NAMES -DREENTRANT_SYSCALLS_PROVIDED"
--target=i386-elf --enable-newlib-nano-malloc && make
<...omitted output...>
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:
In function ‘_mallinfo_r’:
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:489:35:
error: macro "_sbrk_r" requires 2 arguments, but only 1 given
sbrk_now = _sbrk_r(RCALL 0);
^
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:489:20:
error: ‘_sbrk_r’ undeclared (first use in this function)
sbrk_now = _sbrk_r(RCALL 0);
^
../../../../../../newlib-2.3.0.20160104/newlib/libc/stdlib/nano-mallocr.c:489:20:
note: each undeclared identifier is reported only once for each
function it appears in
Makefile:1512: recipe for target 'lib_a-nano-mallinfor.o' failed
make[8]: *** [lib_a-nano-mallinfor.o] Error 1
In case of non-reentrant system calls _sbrk_r became a macro with TWO
args (defined in reent.h):
#define _sbrk_r(__reent, __incr) sbrk(__incr)
But in our case only one argument is present. (RCALL 0) is considered
as a single argument despite RCALL itself is a macro:)
So intermediate one-arg macro will be enough to expand args before
final _sbrk_r expansion:
#define _SBRK_R(X) _sbrk_r(X)
Here is a patch:
Corinna Vinschen
Sebastian Huber
Yaakov Selkowitz
Jeff Johnston
Joel Sherrill
Pieter du Preez
Václav Haisman
Jon Turney
Игорь Веневцев