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2023-09-15fork: generate stub on no-MMU systemsBen Wolsieffer
fork() can be implemented using either the fork or clone syscalls on MMU systems. Therefore the stub is only generated if neither __NR_fork nor __NR_clone are defined. The stub code manually undefines __NR_fork on no-MMU systems in an attempt to enable the stub, but this doesn't work because __NR_clone is still defined. It is not appropriate to undefine __NR_clone because clone is available on no-MMU, it is just not capable of implementing fork. This patch directly enables the fork stub if __ARCH_USE_MMU__ is not defined. This eliminates the need to undefine __NR_fork, so this code is removed Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
2023-09-14fstatat: add wrapper that uses statx for non-legacy archYann Sionneau
Add fstatat wrapper that uses statx for non-legacy arch. This allows non-legacy arch to opt-out from defining the old stat* syscalls by not defining __ARCH_WANT_NEW_STAT in their arch/xxx/include/asm/unistd.h Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2023-09-14add support for systems without legacy setrlimit/getrlimit syscallsYann Sionneau
Those must have the recent prlimit64 syscall which exists since Linux 3.2. This patch is necessary for non-legacy architectures that wish to remove support for legacy setrlimit/getrlimit syscalls. The non-legacy arch are those who opt-out via non defining __ARCH_WANT_SET_GET_RLIMIT in their arch/xxx/include/uapi/asm/unistd.h setrlimit and getrlimit are then emulated via the new prlimit64 syscall. Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2023-09-14fstat: add missing return value statement for the statx wrapping caseYann Sionneau
Add missing return value statement to fstat for the statx wrapping case. Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2023-09-14fstatat64: define it as a wrapper of statx if the kernel does not support ↵Yann Sionneau
fstatat64 syscall Define fstatat64 as a wrapper of statx if the kernel does not support fstatat64 syscall This is the case for non-legacy architectures that don't define __ARCH_WANT_NEW_STAT in their linux arch/xxx/include/asm/unistd.h Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2023-08-14gettimeofday() only include ldso.h if vdso support is activatedlordrasmus
2023-08-08aarch64: add hwcap header fileWaldemar Brodkorb
2023-08-02add missing wchar.h, fixes a compile error with openadkWaldemar Brodkorb
2023-07-14[PATCH] libc/sysdeps/linux/common/bits/wchar.h: resync with glibc, fix build ↵Waldemar Brodkorb
issue with gcc 12 The current definition of __WCHAR_MIN and __WCHAR_MAX are only correct when wchar_t is an int. This is not the case on ARM/AArch64 where wchar_t is an unsigned int, or some other architectures where wchar_t is a long. The current incorrect definition causes a build issue for example when building mpd, which uses boost, with gcc 12.x: In file included from /home/thomas/buildroot/aarch64/host/aarch64-buildroot-linux-uclibc/sysroot/usr/include/boost/integer.hpp:20, from /home/thomas/buildroot/aarch64/host/aarch64-buildroot-linux-uclibc/sysroot/usr/include/boost/crc.hpp:42, from ../src/storage/StorageState.cxx:43: /home/thomas/buildroot/aarch64/host/aarch64-buildroot-linux-uclibc/sysroot/usr/include/boost/integer_traits.hpp:105:69: error: narrowing conversion of ‘-2147483648’ from ‘int’ to ‘wchar_t’ [-Wnarrowing] 105 | public detail::integer_traits_base<wchar_t, WCHAR_MIN, WCHAR_MAX> | ^ This issue was fixed in glibc in 2013, see bug report https://sourceware.org/bugzilla/show_bug.cgi?id=15036, and upstream commit https://sourceware.org/git/?p=glibc.git;a=commit;h=052aff95782fefe9c63566471063e8b20836bfb8. Since the i386-specific definition of __WCHAR_MIN and __WCHAR_MAX was also removed at the same time in glibc, we do the same as part of this commit. Reported-by: Clément Ramirez <clement.ramirez@bootlin.com> With-some-useful-help-from: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2023-05-10gettimeofday: fix static buildWaldemar Brodkorb
2023-03-13Emulate 'futimesat' when __NR_futimesat is not available.Elliot Thomas
2023-01-22Defined MAP_FIXED_NOREPLACElinted
Added definition for MAP_FIXED_NOREPLACE which was added in kernel 4.17 Signed-off-by: linted <linted@users.noreply.github.com>
2022-12-19gettimeofday() vdso supportramin
2022-12-19sycall macro for vdso supportramin
2022-08-08resource.h: add missing RUSAGE_THREADWaldemar Brodkorb
There is a real-world usage of RUSAGE_THREAD by the pistache project, https://github.com/oktal/pistache. Reported-By: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2022-05-20define RLIMIT_RTTIME, bump RLIMIT_NLIMITSRomain Naour
This macro exists since Linux 2.6.25 [1] and is defined in glibc since 2.14 [2] for sparc and most supported architectures. RLIMIT_RTTIME has been added later for mips [3] and alpha [4]. For example, RLIMIT_RTTIME is needed to build qemu 7.0.0 with Linux user-land emulation support [5]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=78f2c7db6068fd6ef75b8c120f04a388848eacb5 [2] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=67f86a251e0d36107fe28999281d46e76941c7b9 [3] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=8969f4df1a526aa60dd0bc1c4736cf02104d4a05 [4] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=53c2cb7641bd866398156625ef672bbd2d78a0d8 [5] https://git.qemu.org/?p=qemu.git;a=commitdiff;h=244fd08323088db73590ff2317dfe86f810b51d7 Signed-off-by: Romain Naour <romain.naour@gmail.com>
2022-02-27guard prlimit, reported by Lance FredricksonWaldemar Brodkorb
2022-01-28sched.h: Add SCHED_DEADLINEPetr Vorel
Defined in kernel v3.14, commit aab03e05e8f7 ("sched/deadline: Add SCHED_DEADLINE structures & implementation") Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
2022-01-21add prlimit syscall wrapper, now for realWaldemar Brodkorb
2022-01-21add prlimit syscall wrapperWaldemar Brodkorb
2021-12-24Fix some warnings due to type issuesYann Sionneau
Fixes those two warnings: In file included from <command-line>: libc/sysdeps/linux/common/openat64.c:18:33: warning: 'openat64' alias between functions of incompatible types 'int(int, const char *, int, ...)' and 'int(int, const char *, int, mode_t)' {aka 'int(int, const char *, int, unsigned int)'} [-Wattribute-alias=] 18 | strong_alias_untyped(__openat64,openat64) | ^~~~~~~~ ./include/libc-symbols.h:177:31: note: in definition of macro '_strong_alias_untyped' 177 | extern __typeof (aliasname) aliasname __attribute__ ((alias (#name))) __attribute_copy__ (name); | ^~~~~~~~~ libc/sysdeps/linux/common/openat64.c:18:1: note: in expansion of macro 'strong_alias_untyped' 18 | strong_alias_untyped(__openat64,openat64) | ^~~~~~~~~~~~~~~~~~~~ libc/sysdeps/linux/common/openat64.c:14:12: note: aliased declaration here 14 | static int __openat64(int fd, const char *file, int oflag, mode_t mode) | ^~~~~~~~~~ and CC libc/sysdeps/linux/common/stat.os libc/sysdeps/linux/common/stat.c: In function 'stat': libc/sysdeps/linux/common/stat.c:28:40: warning: passing argument 3 of 'fstatat64' from incompatible pointer type [-Wincompatible-pointer-types] 28 | return fstatat64(AT_FDCWD, file_name, buf, 0); | ^~~ | | | struct stat * In file included from libc/sysdeps/linux/common/stat.c:11: ./include/sys/stat.h:258:35: note: expected 'struct stat64 * restrict' but argument is of type 'struct stat *' 258 | struct stat64 *__restrict __buf, int __flag) | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2021-04-09open: Add support for O_TMPFILENicolas Cavallari
Since Linux 3.11, O_TMPFILE allows to create unnamed files that can be linked later on. It is internally defined as (O_TMPFILE | O_DIRECTORY) to make it fail on old kernels. Copying definitions from glibc for O_TMPFILE is not enough to support O_TMPFILE; The open() wrapper also need to pass the mode when the flag contains O_TMPFILE, otherwise, it will pass mode 000 which will succeed but yield unexpected results. openat() is curiously not affected since it passes the mode unconditionally.. Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
2021-01-28use renameat2 syscall, when renameat isn't availableWaldemar Brodkorb
2021-01-27fix umount2 compilation for alpha on Linux 5.xWaldemar Brodkorb
2020-08-19Add {name, open}_to_handle_at() implementationPetr Vorel
copied from musl 1.2.1. Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
2020-08-15sys/random.h include stddef.hWaldemar Brodkorb
Reported-By: akater <nuclearspace@gmail.com>
2020-07-02Rename __unused struct members to include a namespaceEd Wildgoose
Rename various spare fields in structs to include a namespace This should avoid accidental clashes with uses of the __unused symbol in upstream projects. eg currently it causes a compile error in dhcpcd 8.x due to their re-use of the __unused symbol as a macro This follows the style of glibc which does something equivalent
2020-04-01statx: make include conditional, fixes non-csky arch buildroot buildsWaldemar Brodkorb
2020-02-07common/bits: Fix ipc_perm and semid_ds definitions for 64-bit archesVladimir Murzin
It fixes: FAIL sem got 1 expected 0 failed: incorrect sem_nsems! semget(IPC_CREAT) = 0 semctl(k) = 0 sem_nsems = 0 for aarch64. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
2020-02-03csky: add statx conditionalsWaldemar Brodkorb
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>
2020-01-30poll: avoid calling select with empty sets which hangs the processYann Sionneau
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 +++
2019-11-17fix PTRAVE_EVENT_SECCOMP typo in ptrace.hJoris Vink
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.
2019-11-05implement fexecve from glibcWaldemar Brodkorb
2019-05-13preadv/pwritev: fix offset argument typeMax Filippov
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>
2018-12-14several patches for uclibc nghan_mao@c-sky.com
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.
2018-11-27statfs.h: sync generic header with glibcWaldemar Brodkorb
Fix issues with aarch64 and df with mismatching header between kernel and libc.
2018-11-01time.h: Add CLOCK_TAIPetr Vorel
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>
2018-10-20do not expose recvmmsg/sendmmsg for unsupported kernelsWaldemar Brodkorb
2018-09-21bugfix renameat2 wrong implement.Guo Ren
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2018-08-16sched_setaffinity: use the same style with glibc'sGuo Ren
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>
2018-06-10risc-v: initial 64 bit port, static only (no TLS/NPTL)Waldemar Brodkorb
Only a simple hello world is tested in qemu system emulation.
2018-04-17common/sendfile.c: bugfix can't support offset is NULLGuo Ren
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>
2018-04-17Revert "common/sendfile.c: bugfix can't support offset is NULL"Waldemar Brodkorb
This reverts commit b00fd230ed0b49b9f23d829ad5d09859f34bb754.
2018-04-13lseek.c: bugfix ltp lseek01.cGuo Ren
Ref the implement from the glibc and high=0 seems so bad. Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2018-04-13common/sendfile.c: bugfix can't support offset is NULLGuo Ren
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>
2018-04-02use __NR_newfstatat only for modern Linux architecturesWaldemar Brodkorb
Otherwise it breaks mips64 n64. Should be used for aarch64/tilegx only.
2018-03-12tile: add basic support for tilegxWaldemar Brodkorb
This adds basic support for tile architecture. Only static binaries, no ld.so or threading support. Tested with qemu-tilegx only.
2018-02-17bits/socket.h: add missing definesWaldemar Brodkorb
Newer iproute2 package make use of some of defines. Sync missing defines with GNU C library.
2018-02-04mman: disable memfd_create declarationWaldemar Brodkorb
2018-02-03bits/mman.h: consolidate header fileWaldemar Brodkorb
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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