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Similar to glibc commit
https://sourceware.org/git/?p=glibc.git;a=commit;h=6bbfc5c09fc5b5e3d4a0cddbbd4e2e457767dae7
we need to handle Linux kernel change, which removed stat64 family from default syscall set.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Waldemar Brodkorb <wbrodkorb@conet.de>
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Avoid calling select with empty sets which hangs the process
This makes uClibc-ng act like glibc and musl
Without this fix the test_poll of python3 testsuite hangs forever
Scenario of the issue:
If you call poll with only invalid file descriptors, like in python3
testsuite
(https://github.com/python/cpython/blob/master/Lib/test/test_poll.py#L83)
You will go through uClibc poll emulation code, which is based on
select syscall.
Your first call to select will fail, it will return -1 and errno will be
set to EBADF: https://github.com/wbx-github/uclibc-ng/blob/master/libc/sysdeps/linux/common/poll.c#L120
Then you will go through the for loop which tests individually each file descriptor by calling
select on each one: https://github.com/wbx-github/uclibc-ng/blob/master/libc/sysdeps/linux/common/poll.c#L163
each call will also return -1 with errno being equal to EBADF.
Therefore all pollfd will have the POLLNVAL flag in their respective revents field.
And, the most important, rset/wset/xset will stay empty.
Then the for loop ends, the "continue" makes the while loop run again.
The following select() is run again: https://github.com/wbx-github/uclibc-ng/blob/master/libc/sysdeps/linux/common/poll.c#L120
But this time the sets are empty.
If the poll was called with timeout set to -1, this select will hang forever because there is no timeout
and the sets are empty so no event will ever wake it up.
test program:
int main(void)
{
struct pollfd pfd;
int ret;
int pipe_fds[2];
pipe(pipe_fds);
close(pipe_fds[0]);
close(pipe_fds[1]);
pfd.fd = pipe_fds[0];
pfd.events = POLLIN | POLLOUT | POLLPRI;
pfd.revents = 0;
ret = poll(&pfd, 1, -1);
printf("ret: %d\n", ret);
if (ret < 0)
printf("error: %s", strerror(errno));
else {
puts("revents: ");
if (pfd.revents & POLLERR)
printf(" POLLERR");
if (pfd.revents & POLLHUP)
printf(" POLLHUP");
if (pfd.revents & POLLNVAL)
printf(" POLLNVAL");
puts("");
}
return 0;
}
This hangs on uClibc-ng aarch64 and Kalray's arch (kv3) but does the following on musl and glibc:
"
ret: 1
revents:
POLLNVAL
"
strace output of this program with uClibc *without* the patch applied:
pselect6(4, [3], [3], [3], NULL, NULL) = -1 EBADF (Bad file descriptor)
pselect6(4, [3], [3], [3], {tv_sec=0, tv_nsec=0}, NULL) = -1 EBADF (Bad file descriptor)
pselect6(0, 0x7ffffffb80, 0x7ffffffb68, 0x7ffffffb50, NULL, NULL
(never finishes)
strace output of this program with uClibc *with* the patch applied:
pselect6(4, [3], [3], [3], NULL, NULL) = -1 EBADF (Bad file descriptor)
pselect6(4, [3], [3], [3], {tv_sec=0, tv_nsec=0}, NULL) = -1 EBADF (Bad file descriptor)
write(1, "ret: 1\n", 7ret: 1
) = 7
write(1, "revents: \n", 10revents:
) = 10
write(1, " POLLNVAL\n", 10 POLLNVAL
) = 10
exit_group(0) = ?
+++ exited with 0 +++
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Hi,
This diff fixes a typo in the PTRACE_EVENT_SECCOMP event code.
The typo itself was introduced in 2012 when syncing with glibc header
files and was itself fixed in 2013 in the glibc headers.
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preadv/pwritev don't provide separate version for 64-bit wide off_t,
and default to 32-bit wide off_t, which results in a mismatch between
declaration and definition for user programs built with
-D_FILE_OFFSET_BITS=64.
Make offset argument of both functions __off64_t.
This fixes test misc/tst-preadvwritev on xtensa.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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I've got several patches to fix ltp/openmp/uclibc-ng-test testcase fail on
c-sky.
- fix a ltp testcase.
- fix the problem that pthread creat will fail when libomp is linked before
libc, the variable pagesize is not init.
- fix tst-cancel4 and tst-cancel16. tst-cancelx4 and tst-cancelx16 still fail
with this patch applied, cleanup handler is not called for open/creat/fcntl,
seems some thing wrong with unwind, I haven't check the rootcause yet.
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Fix issues with aarch64 and df with mismatching header between kernel
and libc.
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Added in kernel in kernel 3.10 in
1ff3c9677bff ("timekeeping: Add CLOCK_TAI clockid")
NOTE: CLOCK_SGI_CYCLE was not added, as it has been lately removed.
Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
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Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Call getpid() in INTERNAL_SYSCALL will break the argument regs,
because gcc couldn't save destoryed regs for system call asm.
Ref to glibc, we could just remove all the check code.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Only a simple hello world is tested in qemu system emulation.
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In ltp testcase sendfile08.c, it use offset=NULL to test the api.
PATCH V2:
fixup the stupid missing check in the end. Sorry for lose test.
See "man sendfile" and it really support offset is NULL.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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This reverts commit b00fd230ed0b49b9f23d829ad5d09859f34bb754.
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Ref the implement from the glibc and high=0 seems so bad.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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In ltp testcase sendfile08.c, it use offset=NULL to test the api.
See "man sendfile" and it really support offset is NULL.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Otherwise it breaks mips64 n64.
Should be used for aarch64/tilegx only.
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This adds basic support for tile architecture.
Only static binaries, no ld.so or threading support.
Tested with qemu-tilegx only.
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Newer iproute2 package make use of some of defines.
Sync missing defines with GNU C library.
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Sync with GNU C library and consolidate duplicate non
architecture specific defines.
MAP_UNINITIALIZED is only defined to 0x4000000 and used by
the Linux kernel when CONFIG_MMAP_ALLOW_UNINITIALIZED is enabled.
CONFIG_MMAP_ALLOW_UNINITIALIZED is only available for nommu.
See Documentation/nommu-mmap.txt.
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The fallback code is not used as all supported kernels have the
syscall. Check if a absolute path is returned from syscall.
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It seems there is no real dependency to NPTL for these clock_*
functions when UCLIBC_ADVANCED_REALTIME is enabled.
No regressions found.
Reported-by: Baruch Siach <baruch@tkos.co.il>
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The definition of syscall() in unistd.h is with varargs. Traditionally
the common implementation in uclibc has been with regular arguments.
This patch updates that by using varargs.
This has caused issues on architectures like or1k which have different
calling conventions for varargs and regular arg parameters.
The implementation here is based on an implementation from Joel Stanley
<joel@jms.id.au>. There is a difference that I do not initialize the
stack args with 0 as they are immediately overwritten by va_args.
Signed-off-by: Stafford Horne <shorne@gmail.com>
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Use __NR_sync_file_range2 for csky sync_file_range function.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Port over NPTL/TLS support from GNU C Library.
In the first step only the slower syscall is used for TLS
access. The uClibc-ng testsuite shows 79 errors, so their
is room for bugfixes and improvements.
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Add missing member in struct statfs.
It is used by xfsprogs (f.e. 4.13.1).
Reported-by: Joshua Kinard <kumba@gentoo.org>
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Fix iteration over signals, synced with GNU C library code and
pending patches. Issues found when running dhcpcd with hook
scripts. (exit status 127)
Reported-By: kapeka <kapeka@bering-uclibc.de>
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Follow the steps to build c-sky uclibc linux system:
1. git clone https://github.com/c-sky/buildroot.git
2. cd buildroot
3. make qemu_csky_ck810_uclibc_defconfig
4. make
Follow the buildroot/board/qemu/csky/readme.txt to run.
This buildroot toolchain is pre-build, But you can rebuild
the c-sky uclibc-ng alone and install it to the buildroot
sysroot manually.
We'll try our best to improve the uclibc-ng continuously.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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According to standards SVID and SYSV.
Modified lgamma calling in case when 'signgam' variable should not be used.
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
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The current uclibc-ng use 4 arguments, and this will cause
ltp-testsuite's preadv/pwritev case failed.
The syscall of preadv/pwritev in current linux-kernel is 5 arguments:
linux/fs/read_write.c:
SYSCALL_DEFINE5(preadv, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h)
SYSCALL_DEFINE5(pwritev, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h)
So just update to 5-args-syscall, and off_t could be 32bit or 64bit.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Remove enum __ptrace_flags along with the only constant it contains,
PTRACE_SEIZE_DEVEL, from Linux's sys/ptrace.h files.
Following GNU C library commit:
60e2846e2633a990bdf474004a373bde54c0bc5f
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The function towlower doesn't work with locales different from C.
Issue was introduced in commit: 8cde3a9bf2856dcb9a759dec7ecb04a68e712254
Call to setlocale is needed for correct generation of the table uplow_diff.
Otherwise you receive compile time error "range assumption error" after
uncommenting the call.
Similar problem described here:
http://lists.uclibc.org/pipermail/uclibc/2015-March/048852.html
This commit fix the problem by using int32_t values.
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No NPTL, no LDSO support.
Bootup with Busybox Ash in Qemu working.
Testuite shows only two failures, but mksh continue/break
support doesn't work.
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cleanup unused and unsupported code.
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If you enable these wrappers, be sure you don't need long double
precision on your embedded device, as these only enables
long double warpper functions to the existing double math
functions. Required to build some software as lvm2.
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
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The new code get's used by MIPS64 N64 and fails.
Make the new code aarch64 specific.
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Ported over from GNU C Library and runtime tested in Qemu.
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Follow GNU C Library from c579f48edba88380635ab98cb612030e3ed8691e
and remove the PID caching. These simplifies the architecture specific
assembly code.
The run of the test suite found no regressions, it even solves
some of the test failures for x86/x86_64/sparc.
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Acked-by: Matthew Fortune <Matthew.Fortune@imgtec.com>
Acked-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
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This commit includes following features.
1. Support NPTL/TLS
2. Add libm function which is used to handle FP rounding and excpetions
(ex: fclrexcpt,fedisblxcpti,feenablxcpt... )
3. Add *context function for operating user context
(ex: setcontext,getcontext,makecontext... )
4. Change the return flow from signal handler
5. Cleanup of old code
The testsuite only has 2 errors, tst-cpuclock1 and tst-cputimer1,
which are related to timing accuracy. (math and locale tests are disabled)
Signed-off-by: Vincent Ren-Wei Chen <vincentc@andestech.com>
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Add the wrappers unconditionally, because kmod package
still uses them.
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The syscall wrappers are not required and other C libraries
do not provide them. Busybox modutils.c must be patched so
that syscall() is used for uClibc-ng.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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Similar to what was done in commit
9945c6d21797553e78cbef8034f6dd16b3824df5 for posix_madvise().
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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