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2018-04-28RISC-V: fix struct kernel_sigaction to match the kernel version [BZ #23069]Aurelien Jarno
The RISC-V kernel doesn't define SA_RESTORER, hence the kernel version of struct sigaction doesn't have the sa_restorer field. The default kernel_sigaction.h therefore can't be used. This patch adds a RISC-V specific version of kernel_sigaction.h to fix the issue. This fixes for example the libnih testsuite. Note that this patch is not needed in master as the bug has been fixed by commit b4a5d26d8835 ("linux: Consolidate sigaction implementation").
2018-03-29Linux i386: tst-bz21269 triggers SIGBUS on some kernelsFlorian Weimer
In addition to SIGSEGV and SIGILL, SIGBUS is also a possible signal generated by the kernel. (cherry picked from commit 4d76d3e59d31aa690f148fc0c95cc0c581aed3e8)
2018-03-12i386: Fix i386 sigaction sa_restorer initialization (BZ#21269)Adhemerval Zanella
This patch fixes the i386 sa_restorer field initialization for sigaction syscall for kernel with vDSO. As described in bug report, i386 Linux (and compat on x86_64) interprets SA_RESTORER clear with nonzero sa_restorer as a request for stack switching if the SS segment is 'funny'. This means that anything that tries to mix glibc's signal handling with segmentation (for instance through modify_ldt syscall) is randomly broken depending on what values lands in sa_restorer. The testcase added is based on Linux test tools/testing/selftests/x86/ldt_gdt.c, more specifically in do_multicpu_tests function. The main changes are: - C11 atomics instead of plain access. - Remove x86_64 support which simplifies the syscall handling and fallbacks. - Replicate only the test required to trigger the issue. Checked on i686-linux-gnu. [BZ #21269] * sysdeps/unix/sysv/linux/i386/Makefile (tests): Add tst-bz21269. * sysdeps/unix/sysv/linux/i386/sigaction.c (SET_SA_RESTORER): Clear sa_restorer for vDSO case. * sysdeps/unix/sysv/linux/i386/tst-bz21269.c: New file. (cherry picked from commit 68448be208ee06e76665918b37b0a57e3e00c8b4)
2018-03-12linux/powerpc: sync sys/ptrace.h with Linux 4.15 [BZ #22433, #22807]Dmitry V. Levin
Tested with strace. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h (__ptrace_request): Add PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS, PTRACE_SETFPREGS, PTRACE_GETVRREGS, PTRACE_SETVRREGS, PTRACE_GETEVRREGS, PTRACE_SETEVRREGS, PTRACE_GETREGS64, PTRACE_SETREGS64, PTRACE_GET_DEBUGREG, PTRACE_SET_DEBUGREG, PTRACE_GETVSRREGS, PTRACE_SETVSRREGS, and PTRACE_SINGLEBLOCK. (cherry picked from commit f5f473a9d0e8fdbede858fa1ef0d01d12142367b)
2018-03-12powerpc: Undefine Linux ptrace macros that conflict with __ptrace_requestTulio Magno Quites Machado Filho
Linux ptrace headers define macros whose tokens conflict with the constants of enum __ptrace_request causing build errors when asm/ptrace.h or linux/ptrace.h are included before sys/ptrace.h. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h: Undefine Linux macros used in __ptrace_request. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> (cherry picked from commit 398c6fddafcee2dc4c2b2574417a2d0cfccaeec1)
2018-03-09sparc32: Add nop before __startcontext to stop unwinding [BZ #22919]Aurelien Jarno
On sparc32 tst-makecontext fails, as backtrace called within a context created by makecontext to yield infinite backtrace. Fix that the same way than nios2 by adding a nop just before __startcontext. This is needed as otherwise FDE lookup just repeatedly finds __setcontext's FDE in an infinite loop, due to the convention of using 'address - 1' for FDE lookup. Changelog: [BZ #22919] * sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S (__startcontext): Add nop before __startcontext, add explaining comments. (cherry picked from commit 9aa5c222b9e0409143410a02b6364a3b25dbf028)
2018-03-08powerpc: Fix TLE build for SPE (BZ #22926)Adhemerval Zanella
Some SPE opcodes clashes with some recent PowerISA opcodes and until recently gas did not complain about it. However binutils recently changed it and now VLE configured gas does not support to assembler some instruction that might class with VLE (HTM for instance). It also does not help that glibc build hardware lock elision support as default (regardless of assembler support). Although runtime will not actually enables TLE on SPE hardware (since kernel will not advertise it), I see little advantage on adding HTM support on SPE built glibc. SPE uses an incompatible ABI which does not allow share the same build with default powerpc and HTM code slows down SPE without any benefict. This patch fixes it by only building HTM when SPE configuration is not used. Checked with a powerpc-linux-gnuspe build. I also did some sniff tests on a e500 hardware without any issue. [BZ #22926] * sysdeps/powerpc/powerpc32/sysdep.h (ABORT_TRANSACTION_IMPL): Define empty for __SPE__. * sysdeps/powerpc/sysdep.h (ABORT_TRANSACTION): Likewise. * sysdeps/unix/sysv/linux/powerpc/elision-lock.c (__lll_lock_elision): Do not build hardware transactional code for __SPE__. * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c (__lll_trylock_elision): Likewise. * sysdeps/unix/sysv/linux/powerpc/elision-unlock.c (__lll_unlock_elision): Likewise. Cherry-pick from e921c89e01389161c036ec09112da6e18aeaa688.
2018-02-19linux/aarch64: sync sys/ptrace.h with Linux 4.15 [BZ #22433]Dmitry V. Levin
Remove compat-specific constants that were never exported by kernel headers under these names. Before linux commit v3.7-rc1~16^2~1 they were exported with COMPAT_ prefix, and since that commit they are not exported at all. * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h (__ptrace_request): Remove arm-specific PTRACE_GET_THREAD_AREA, PTRACE_GETHBPREGS, and PTRACE_SETHBPREGS. (cherry picked from commit 2fd4bbaa1446f1be700e10c526cf585a796c4991)
2018-02-09[RISC-V] Fix parsing flags in ELF64 files.DJ Delorie
When ldconfig reads Elf64 files to determine the ABI, it used the Elf32 type, so read the wrong location, and stored the wrong ABI type in the cache, making the cache useless. This patch uses an Elf64 type for Elf64 objects instead. Note that pre-patch caches might need to be manually removed and regenerated to get the correct ABIs stored. [BZ #22827] * sysdeps/unix/sysv/linux/riscv/readelflib.c (process_elf_file): Use 64-bit ELF type for 64-bit ELF objects. (cherry picked from commit 6a1ff640dcec04905d8518983ad6252d38b7a733)
2018-02-07Linux: use reserved name __key in pkey_get [BZ #22797]Igor Gnatenko
_key is not reserved name and we should avoid using that. It seems that it was simple typo when pkey_* was implemented. (cherry picked from commit 388ff7bd0d57d7061fdd39a2f26f65687e8058da)
2018-01-29RISC-V: Add ipc_priv.hPalmer Dabbelt
This contains a definition of __IPC_64 that matches the RISC-V Linux ABI. 2018-01-29 Darius Rad <darius@bluespec.com> * sysdeps/unix/sysv/linux/riscv/ipc_priv.h: New file.
2018-01-29RISC-V: Build InfastructurePalmer Dabbelt
This patch lays out the top-level orginazition of the RISC-V port. It contains all the Implies files as well as various other fragments of build infastructure for the RISC-V port. This contains the only change to a shared file: config.h.in. RISC-V is a family of base ISAs with optional extensions. The base ISAs are RV32I and RV64I, which are 32-bit and 64-bit integer-only ISAs, but this port currently only supports RV64I based systems. Support for RISC-V lives in in sysdeps/riscv. In addition to these ISAs, our glibc port supports most of the currently-defined extensions: the A extension for atomics, the M extension for multiplication, the C extension for compressed instructions, and the F/D extensions for single/double precision IEEE floating-point. Most of these extensions are handled by GCC, but glibc defines various floating-point wrappers and emulation routines as well as some atomic wrappers. We support running glibc-based programs on Linux, the support for which lives in sysdeps/unix/sysv/linux/riscv. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/riscv/Implies: New file. * sysdeps/riscv/Makefile: Likewise. * sysdeps/riscv/configure: Likewise. * sysdeps/riscv/configure.ac: Likewise. * sysdeps/riscv/nptl/Makefile: Likewise. * sysdeps/riscv/preconfigure: Likewise. * sysdeps/riscv/rv64/Implies-after: Likewise. * sysdeps/riscv/rv64/rvd/Implies: Likewise. * sysdeps/riscv/rv64/rvf/Implies: Likewise. * sysdeps/unix/sysv/linux/riscv/Implies: Likewise. * sysdeps/unix/sysv/linux/riscv/Makefile: Likewise. * sysdeps/unix/sysv/linux/riscv/Versions: Likewise. * sysdeps/unix/sysv/linux/riscv/configure: Likewise. * sysdeps/unix/sysv/linux/riscv/configure.ac: Likewise. * sysdeps/unix/sysv/linux/riscv/ldd-rewrite.sed: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/Implies: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/Makefile: Likewise. * sysdeps/unix/sysv/linux/riscv/shlib-versions: Likewise.
2018-01-29RISC-V: Add ABI ListsPalmer Dabbelt
I started with the aarch64 ABI lists and manually went through each difference, ensuring that the missing entries had been deprecated along the line. Darius generated the ulps files by running the test cases on QEMU. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/riscv/nofpu/libm-test-ulps: New file. * sysdeps/riscv/nofpu/libm-test-ulps-name: Likewise. * sysdeps/riscv/rv64/rvd/libm-test-ulps: Likewise. * sysdeps/riscv/rv64/rvd/libm-test-ulps-name: Likewise. * sysdeps/unix/sysv/linux/riscv/localplt.data: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libutil.abilist: Likewise.
2018-01-29RISC-V: Linux Startup and Dynamic Loading CodePalmer Dabbelt
This contains the Linux-specific code for loading programs on RISC-V. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/unix/sysv/linux/riscv/dl-static.c: New file. * sysdeps/unix/sysv/linux/riscv/ldconfig.h: Likewise. * sysdeps/unix/sysv/linux/riscv/ldsodefs.h: Likewise.
2018-01-29RISC-V: Linux ABIPalmer Dabbelt
Linux-specific code that is required for maintaining ABI compatibility. This doesn't contain the actual system call interface, that is split out in order to avoid having a patch that's too big. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/riscv/nptl/pthread-offsets.h: New file. * sysdeps/riscv/nptl/pthreaddef.h: Likewise. * sysdeps/unix/sysv/linux/riscv/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/riscv/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h: Likewise. * sysdeps/unix/sysv/linux/riscv/dl-cache.h: Likewise. * sysdeps/unix/sysv/linux/riscv/flush-icache.c: Likewise. * sysdeps/unix/sysv/linux/riscv/getcontext.S: Likewise. * sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise. * sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/riscv/makecontext.c: Likewise. * sysdeps/unix/sysv/linux/riscv/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/riscv/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/riscv/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/riscv/swapcontext.S: Likewise. * sysdeps/unix/sysv/linux/riscv/sys/cachectl.h: Likewise. * sysdeps/unix/sysv/linux/riscv/sys/procfs.h: Likewise. * sysdeps/unix/sysv/linux/riscv/sys/ucontext.h: Likewise. * sysdeps/unix/sysv/linux/riscv/sys/user.h: Likewise. * sysdeps/unix/sysv/linux/riscv/ucontext-macros.h: Likewise. * sysdeps/unix/sysv/linux/riscv/ucontext_i.sym: Likewise.
2018-01-29RISC-V: Linux Syscall InterfacePalmer Dabbelt
Contains the Linux system call interface, as well as the definitions of a handful of system calls. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/riscv/nptl/nptl-sysdep.S: New file. * sysdeps/unix/sysv/linux/riscv/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/riscv/clone.S: Likewise. * sysdeps/unix/sysv/linux/riscv/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/riscv/pt-vfork.S: Likewise. * sysdeps/unix/sysv/linux/riscv/syscall.c: Likewise. * sysdeps/unix/sysv/linux/riscv/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/riscv/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/riscv/vfork.S: Likewise.
2018-01-29RISC-V: Atomic and Locking RoutinesPalmer Dabbelt
This patch implements various atomic and locking routines on RISC-V. We mandate the A extension on Linux-capable RISC-V systems, so this can rely on always having the various atomic instructions availiable. 2018-01-29 Palmer Dabbelt <palmer@sifive.com> * sysdeps/riscv/nptl/bits/pthreadtypes-arch.h: New file. * sysdeps/riscv/nptl/bits/semaphore.h: Likewise. * sysdeps/riscv/nptl/libc-lowlevellock.c: Likewise. * sysdeps/unix/sysv/linux/riscv/atomic-machine.h: Likewise.
2018-01-29microblaze: don't use copy_file_range syscall with kernel headers < 4.10Romain Naour
copy_file_range syscall was added for microblaze in 4.10. This patch makes the MicroBlaze kernel-features.h undefine __ASSUME_COPY_FILE_RANGE for toolchains built with kernel headers < 4.10. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_COPY_FILE_RANGE) [__LINUX_KERNEL_VERSION < 0x040A00]: Undef. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=7181e5590e5ba898804aef3ee6be7f27606e6f8b Signed-off-by: Romain Naour <romain.naour@gmail.com>
2018-01-25Revert Intel CET changes to __jmp_buf_tag (Bug 22743)Carlos O'Donell
In commit cba595c350e52194e10c0006732e1991e3d0803b and commit f81ddabffd76ac9dd600b02adbf3e1dac4bb10ec, ABI compatibility with applications was broken by increasing the size of the on-stack allocated __pthread_unwind_buf_t beyond the oringal size. Applications only have the origianl space available for __pthread_unwind_register, and __pthread_unwind_next to use, any increase in the size of __pthread_unwind_buf_t causes these functions to write beyond the original structure into other on-stack variables leading to segmentation faults in common applications like vlc. The only workaround is to version those functions which operate on the old sized objects, but this must happen in glibc 2.28. Thank you to Andrew Senkevich, H.J. Lu, and Aurelien Jarno, for submitting reports and tracking the issue down. The commit reverts the above mentioned commits and testing on x86_64 shows that the ABI compatibility is restored. A tst-cleanup1 regression test linked with an older glibc now passes when run with the newly built glibc. Previously a tst-cleanup1 linked with an older glibc would segfault when run with an affected glibc build. Tested on x86_64 with no regressions. Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2018-01-25LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotesAndreas Schwab
The arguments of the LIBC_SLIBDIR_RTLDDIR macro are used both in unquoted and single quoted context, so that neither shell nor makefile variable references work. Consistently put them in single quotes so that they can refer to makefile variables.
2018-01-24Add localplt.data for ColdFire.Joseph Myers
The sole failure for ColdFire in the compilation part of the glibc testsuite is the localplt test. This patch adds a localplt baseline for ColdFire to eliminate that failure. The difference from the existing m68k baseline is that no PLT entry for _Unwind_Find_FDE is expected, because ColdFire does not set libc_cv_gcc_unwind_find_fde=yes. Tested with build-many-glibcs.py. * sysdeps/unix/sysv/linux/m68k/localplt.data: Move to .... * sysdeps/unix/sysv/linux/m68k/m680x0/localplt.data: ... here. * sysdeps/unix/sysv/linux/m68k/coldfire/localplt.data: New file.
2018-01-24Add jmp_buf-macros.h for no-FPU ColdFire.Joseph Myers
Continuing the fixes for ColdFire glibc build with build-many-glibcs.py, given a GCC patch for the libgcc build failure, this patch adds jmp_buf-macros.h for no-FPU ColdFire. This allows the no-FPU build to progress further than without the patch (although other fixes are still needed for the build to complete). * sysdeps/unix/sysv/linux/m68k/coldfire/jmp_buf-macros.h: Move to .... * sysdeps/unix/sysv/linux/m68k/coldfire/fpu/jmp_buf-macros.h: ... here. * sysdeps/unix/sysv/linux/m68k/coldfire/nofpu/jmp_buf-macros.h: New file.
2018-01-24Add jmp_buf-macros.h for ColdFire.Joseph Myers
This patch adds a jmp_buf-macros.h for ColdFire. In conjunction with a GCC patch to fix the libgcc build failure for ColdFire <https://gcc.gnu.org/ml/gcc-patches/2018-01/msg02064.html> this suffices to restore the build (tested with build-many-glibcs.py). A further patch will be needed for soft-float ColdFire (while the function-calling ABI is the same for hard-float and soft-float ColdFire, it turns out the glibc ABI is not - so another ColdFire variant will be needed in build-many-glibcs.py), but I'll deal with that separately. Tested with build-many-glibcs.py (m68k-linux-gnu and m68k-linux-gnu-coldfire). (There's a localplt test failure for coldfire; that's the only failure in the compilation part of the testsuite.) * sysdeps/unix/sysv/linux/m68k/jmp_buf-macros.h: Move to .... * sysdeps/unix/sysv/linux/m68k/m680x0/jmp_buf-macros.h: ... here. * sysdeps/unix/sysv/linux/m68k/coldfire/jmp_buf-macros.h: New file.
2018-01-24aarch64: Revert the change of the __reserved member of mcontext_tSzabolcs Nagy
The uc_mcontext.__reserved member of ucontext_t is a user visible API, that should not be changed, because this is the only way to access cpu states of various extensions of linux asm/sigcontext.h, it does not violate namespace rules either, so revert this part of the commit commit 4fa9b3bfe6759c82beb4b043a54a3598ca467289 Commit: Joseph Myers <joseph@codesourcery.com> Fix mcontext_t sigcontext namespace (bug 21457). (In principle the user can type cast &uc_mcontext to struct sigcontext* to use the linux sigcontext fields, but that's not the existing practice since mcontext_t used to be a typedef of struct sigcontext.) [BZ #22742] * sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (__glibc_reserved1): Rename to __reserved and add comment. * sysdeps/unix/sysv/linux/aarch64/ucontext_i.sym (__glibc_reserved1): Rename to __reserved.
2018-01-19powerpc: Fix syscalls during early process initialization [BZ #22685]Tulio Magno Quites Machado Filho
The tunables framework needs to execute syscall early in process initialization, before the TCB is available for consumption. This behavior conflicts with powerpc{|64|64le}'s lock elision code, that checks the TCB before trying to abort transactions immediately before executing a syscall. This patch adds a powerpc-specific implementation of __access_noerrno that does not abort transactions before the executing syscall. Tested on powerpc{|64|64le}. [BZ #22685] * sysdeps/powerpc/powerpc32/sysdep.h (ABORT_TRANSACTION_IMPL): Renamed from ABORT_TRANSACTION. (ABORT_TRANSACTION): Redirect to ABORT_TRANSACTION_IMPL. * sysdeps/powerpc/powerpc64/sysdep.h (ABORT_TRANSACTION, ABORT_TRANSACTION_IMPL): Likewise. * sysdeps/unix/sysv/linux/powerpc/not-errno.h: New file. Reuse Linux code, but remove the code that aborts transactions. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> Tested-by: Aurelien Jarno <aurelien@aurel32.net>
2018-01-16aarch64: Update bits/hwcap.h for Linux 4.15.Szabolcs Nagy
Define new HWCAP bits and add their name to dl-procinfo.c following the linux definitions. Synchronizing with v4.15-rc8 version of linux, these are not expected to change before the 4.15 release. * sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h (HWCAP_SHA3): Define. (HWCAP_SM3, HWCAP_SM4, HWCAP_ASIMDDP, HWCAP_SHA512, HWCAP_SVE): Define. * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c (_dl_aarch64_cap_flags): Update. (_DL_HWCAP_COUNT): Update.
2018-01-16aarch64: make HWCAP updates less error proneSzabolcs Nagy
Remove unused _DL_HWCAP_LAST definition and move _DL_HWCAP_COUNT where it is needed (dl-procinfo.h always includes dl-procinfo.c). * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h (_DL_HWCAP_LAST): Remove. (_DL_HWCAP_COUNT): Move to ... * sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c (_DL_HWCAP_COUNT): ... here.
2018-01-12linux: make getcwd(3) fail if it cannot obtain an absolute path [BZ #22679]Dmitry V. Levin
Currently getcwd(3) can succeed without returning an absolute path because the underlying getcwd syscall, starting with linux commit v2.6.36-rc1~96^2~2, may succeed without returning an absolute path. This is a conformance issue because "The getcwd() function shall place an absolute pathname of the current working directory in the array pointed to by buf, and return buf". This is also a security issue because a non-absolute path returned by getcwd(3) causes a buffer underflow in realpath(3). Fix this by checking the path returned by getcwd syscall and falling back to generic_getcwd if the path is not absolute, effectively making getcwd(3) fail with ENOENT. The error code is chosen for consistency with the case when the current directory is unlinked. [BZ #22679] CVE-2018-1000001 * sysdeps/unix/sysv/linux/getcwd.c (__getcwd): Fall back to generic_getcwd if the path returned by getcwd syscall is not absolute. * io/tst-getcwd-abspath.c: New test. * io/Makefile (tests): Add tst-getcwd-abspath.
2018-01-08tst-ttyname: skip the test when /dev/ptmx is not availableDmitry V. Levin
* sysdeps/unix/sysv/linux/tst-ttyname.c (do_in_chroot_1): Skip the test instead of failing in case of ENOENT returned by posix_openpt.
2018-01-07getrlimit64: fix for 32-bit configurations with default version >= 2.2Aurelien Jarno
Commit 24731685 ("prlimit: Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY") broken the getrlimit64 for 32-bit configurations which do no need the 2GiB limited compat getrlimit (default version >= 2.2). This patch fixes that by restoring the weak alias in that case. Changelog: * sysdeps/unix/sysv/linux/getrlimit64 (getrlimit64) [!__RLIM_T_MATCHES_RLIM64_T] [!SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)]: Define as weak alias of __getrlimit64. Add libc_hidden_weak.
2018-01-06Add linux-4.15 VDSO hash for RISC-VPalmer Dabbelt
The RISC-V Linux port defines VDSO symbols 2018-01-06 Palmer Dabbelt <palmer@sifive.com> * sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME_LINUX_4_15): New define. (VDSO_HASH_LINUX_4_15): Likewise.
2018-01-05Add test for getrlimit/setrlimit/prlimit with infinity valueAurelien Jarno
Add a test to check that the getrlimit, setrlimit and prlimit functions and their 64-bit equivalent behave correctly with RLIM_INFINITY and RLIM64_INFINITY. For that it assumes that the prlimit64 function calls the syscall directly without translating the value and that the kernel uses the -1 value to represent infinity. It first finds a resource with the hard limit set to infinity so the soft limit can be manipulated easily and check for the consistency between the value set or get by the prlimit64 and the other functions. It is Linux specific add it uses the prlimit and prlimit64 functions. Changelog: * sysdeps/unix/sysv/linux/tst-rlimit-infinity.c: New file. * sysdeps/unix/sysv/linux/Makefile (tests): Add tst-rlimit-infinity.
2018-01-05prlimit: Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY [BZ #22678]Aurelien Jarno
prlimit called without a new value fails on 32-bit machines if any of the soft or hard limits are infinity. This is because prlimit does not translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY, but checks that the value returned by the prlimit64 syscall fits into a 32-bit value, like it is done for example in getrlimit. Note that on the other hand new_rlimit is correctly translated from RLIM_INFINITY to RLIM64_INFINITY before calling the syscall. This patch fixes that. Changelog: [BZ #22678] * sysdeps/unix/sysv/linux/prlimit.c (prlimit): Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY.
2018-01-05Alpha: Fix the RLIM_INFINITY and RLIM64_INFINITY constantsAurelien Jarno
Fix the RLIM_INFINITY and RLIM64_INFINITY constants on alpha to match the kernel one and all other architectures. Change the getrlimit, getrlimit64, setrlimit, setrlimit64 into old compat symbols, and provide the Linux generic functions as GLIBC_2_27 version. Changelog: * sysdeps/unix/sysv/linux/getrlimit64.c [USE_VERSIONED_RLIMIT]: Do not define getrlimit and getrlimit64 as weak aliases of __getrlimit64. Define __GI_getrlimit64 as weak alias of __getrlimit64. [__RLIM_T_MATCHES_RLIM64_T]: Do not redefine SHLIB_COMPAT, use #elif instead. * sysdeps/unix/sysv/linux/setrlimit64.c [USE_VERSIONED_RLIMIT]: Do not define setrlimit and setrlimit64 as weak aliases of __setrlimit64. * sysdeps/unix/sysv/linux/alpha/bits/resource.h (RLIM_INFINITY, RLIM64_INFINITY): Fix values to match the kernel ones. * sysdeps/unix/sysv/linux/alpha/getrlimit64.c: Define USE_VERSIONED_RLIMIT. Rename __getrlimit64 into __old_getrlimit64 and provide it as getrlimit@@GLIBC_2_0 and getrlimit64@@GLIBC_2_1. Add a __getrlimit64 function and provide it as getrlimit@@GLIBC_2_27 and getrlimit64@@GLIBC_2_27. * sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Ditto with setrlimit and setrlimit64. * sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.27): Add getrlimit, setrlimit, getrlimit64 and setrlimit64. * sysdeps/unix/sysv/linux/alpha/Versions (libc): Add getrlimit, setrlimit, getrlimit64 and setrlimit64.
2018-01-05Alpha: Add wrappers to get/setrlimit64 to fix RLIM64_INFINITY constant [BZ ↵Aurelien Jarno
#22648] RLIM64_INFINITY was supposed to be a glibc convention rather than anything seen by the kernel, but it ended being passed to the kernel through the prlimit64 syscall. * On the kernel side, the value is defined for the prlimit64 syscall for all architectures in include/uapi/linux/resource.h: #define RLIM64_INFINITY (~0ULL) * On the kernel side, the value is defined for getrlimit and setrlimit in arch/alpha/include/uapi/asm/resource.h #define RLIM_INFINITY 0x7ffffffffffffffful * On the GNU libc side, the value is defined in sysdeps/unix/sysv/linux/alpha/bits/resource.h: # define RLIM64_INFINITY 0x7fffffffffffffffLL This was not an issue until the getrlimit and setrlimit glibc functions have been changed in commit 045c13d185 ("Consolidate Linux setrlimit and getrlimit implementation") to use the prlimit64 syscall instead of the getrlimit and setrlimit ones. This patch fixes that by adding a wrapper to fix the value passed to or received from the kernel, before or after calling the prlimit64 syscall. Changelog: [BZ #22648] * sysdeps/unix/sysv/linux/alpha/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Ditto.
2018-01-04i386: In makecontext, align the stack before calling exit [BZ #22667]Florian Weimer
Before this change, if glibc was compiled with SSE instructions and a sufficiently recent GCC, an unaligned stack access in __run_exit_handlers would cause stdlib/tst-makecontext to crash.
2018-01-02Simplify getrlimit64.cAurelien Jarno
Changelog: * sysdeps/unix/sysv/linux/alpha/getrlimit64.c (__old_getrlimit64): Drop __RLIM_T_MATCHES_RLIM64_T conditional as __old_getrlimit64 is never defined in that case.
2018-01-02Fix typos in getrlimit64.c and setrlimit64.cAurelien Jarno
Changelog: * sysdeps/unix/sysv/linux/alpha/getrlimit64.c: Fix a typo in the comment. * sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Fix a typo in the comment. (settrlimit): Rename into setrlimit. (__sttrlimit): Rename into __setrlimit.
2018-01-01linux/arm: sync sys/ptrace.h with Linux 4.15 [BZ #22433]Dmitry V. Levin
Clone generic linux/sys/ptrace.h, remove x86-specific PTRACE_GETFPXREGS and PTRACE_SETFPXREGS constants, add the following arm-specific __ptrace_request constants: PTRACE_GETWMMXREGS, PTRACE_SETWMMXREGS, PTRACE_GET_THREAD_AREA, PTRACE_SET_SYSCALL, PTRACE_GETCRUNCHREGS, PTRACE_SETCRUNCHREGS, PTRACE_GETVFPREGS, PTRACE_SETVFPREGS, PTRACE_GETHBPREGS, PTRACE_SETHBPREGS, and PTRACE_GETFDPIC. Tested with strace. * sysdeps/unix/sysv/linux/arm/sys/ptrace.h: New file.
2018-01-01Update copyright dates not handled by scripts/update-copyrights.Joseph Myers
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.
2018-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
* 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.
2017-12-29linux/x86: sync sys/ptrace.h with Linux 4.14 [BZ #22433]Dmitry V. Levin
Clone generic linux/sys/ptrace.h, add the following x86-specific __ptrace_request constants: PTRACE_GET_THREAD_AREA, PTRACE_SET_THREAD_AREA, PTRACE_ARCH_PRCTL, PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, and PTRACE_SINGLEBLOCK. [BZ #22433] * sysdeps/unix/sysv/linux/x86/sys/ptrace.h: New file.
2017-12-29linux: update sys/ptrace.h commentsDmitry V. Levin
* sysdeps/unix/sysv/linux/sys/ptrace.h (__ptrace_request): Add comments about PTRACE_PEEKSIGINFO, PTRACE_GETSIGMASK, PTRACE_SETSIGMASK, and PTRACE_SECCOMP_GET_FILTER. Update comments about PTRACE_SINGLESTEP and PTRACE_SYSCALL. * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/ia64/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/tile/sys/ptrace.h: Likewise.
2017-12-29linux: move a shared part of sys/ptrace.h to bits/ptrace-shared.hDmitry V. Levin
Move a shared part of sys/ptrace.h which is the same on all architectures to a separate file. * sysdeps/unix/sysv/linux/sys/ptrace.h: Include <bits/ptrace-shared.h>. (__ptrace_setoptions, __ptrace_eventcodes, __ptrace_peeksiginfo_args, __ptrace_peeksiginfo_flags, ptrace): Move to ... * sysdeps/unix/sysv/linux/bits/ptrace-shared.h: ... new file. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add bits/ptrace-shared.h. * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h: Include <bits/ptrace-shared.h>. (__ptrace_setoptions, __ptrace_eventcodes, __ptrace_peeksiginfo_args, __ptrace_peeksiginfo_flags, ptrace): Remove. * sysdeps/unix/sysv/linux/ia64/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/tile/sys/ptrace.h: Likewise.
2017-12-24Deprecate external use of libio.h and _G_config.h.Zack Weinberg
libio.h was originally the header for a set of supported GNU extensions, but they have not been maintained as such in many years, they are now standing in the way of improvements to stdio, and we don't think there are any remaining external users. _G_config.h was never intended for public use, but predates the bits convention. Move both of these headers into the bits directory and provide stubs at top level which issue deprecation warnings. The contents of (bits/)libio.h and (bits/)_G_config.h are still exposed to external software via stdio.h; changing that requires more complex surgery than I have time to attempt right now. * libio/libio.h, libio/_G_config.h: New stub headers which issue a deprecation warning and then include <bits/libio.h>, <bits/_G_config.h> respectively. * libio/libio.h: Rename the original version of this file to libio/bits/libio.h. Error out if not included by stdio.h or the stub libio.h. * include/libio.h: Move to include/bits. Forward to libio/bits/libio.h. * sysdeps/generic/_G_config.h: Move to top-level bits/. Error out if not included by bits/libio.h or the stub _G_config.h. * sysdeps/unix/sysv/linux/_G_config.h: Move to sysdeps/unix/sysv/linux/bits. Error out if not included by bits/libio.h or the stub _G_config.h. * libio/stdio.h: Include bits/libio.h, not libio.h. * libio/Makefile: Install bits/libio.h and bits/_G_config.h as well as libio.h and _G_config.h. * csu/init.c, libio/fmemopen.c, libio/iolibio.h, libio/oldfmemopen.c * libio/strfile.h, stdio-common/vfscanf.c * sysdeps/pthread/flockfile.c, sysdeps/pthread/funlockfile.c Include stdio.h, not _G_config.h nor libio.h. * libio/iofgetpos.c: Also rename fgetpos64 out of the way. * libio/iofsetpos.c: Also rename fsetpos64 out of the way. * scripts/check-installed-headers.sh: Skip libio.h and _G_config.h.
2017-12-23getrandom: fix comment [BZ #22347]Dmitry V. Levin
* stdlib/getrandom.c (getrandom): Fix comment. * sysdeps/unix/sysv/linux/getrandom.c (getrandom): Likewise.
2017-12-22copy_file_range: New function to copy file dataFlorian Weimer
The semantics are based on the Linux system call, but a very close emulation in user space is provided.
2017-12-20Simplify tile assembly definitionsAdhemerval Zanella
With tilepro removal, the uppercase instruction are not anymore required to be defines as potentially macros. This is a mechanical change done by the following shell script: --- INSNS="LD LD4U ST ST4 BNEZ BEQZ BEQZT BGTZ CMPEQI CMPEQ CMOVEQZ CMOVNEZ" FILES=$(find sysdeps/tile sysdeps/unix/sysv/linux/tile -iname *.S) for insn in $INSNS; do repl=$(echo $insn | tr '[:upper:]' '[:lower:]') sed -i 's/\b'$insn'\b/'$repl'/g' $FILES done --- Checked with a build for tilegx-linux-gnu and tilegx-linux-gnu-32 with and without the patch, there is no difference in generated binary with a dissassemble. * sysdeps/tile/__longjmp.S (__longjmp): Use lowercase instructions. * sysdeps/tile/__tls_get_addr.S (__tls_get_addr): Likewise. * sysdeps/tile/_mcount.S (__mcount): Likewise. * sysdeps/tile/crti.S (_init, _fini): Likewise. * sysdeps/tile/crtn.S: Likewise. * sysdeps/tile/dl-start.S (_start): Likewise. * sysdeps/tile/dl-trampoline.S: Likewise. * sysdeps/tile/setjmp.S (__sigsetjmp): Likewise. * sysdeps/tile/start.S (_start): Likewise. * sysdeps/unix/sysv/linux/tile/clone.S (_clone): Likewise. * sysdeps/unix/sysv/linux/tile/getcontext.S (__getcontext): Likewise. * sysdeps/unix/sysv/linux/tile/ioctl.S (__ioctl): Likewise. * sysdeps/unix/sysv/linux/tile/setcontext.S (__setcontext): Likewise. * sysdeps/unix/sysv/linux/tile/swapcontext.S (__swapcontext): Likewise. * sysdeps/unix/sysv/linux/tile/syscall.S (syscall): Likewise. * sysdeps/unix/sysv/linux/tile/vfork.S (__vfork): Likewise.
2017-12-20Simplify tilegx sysdeps folderAdhemerval Zanella
With tilepro support removal we can now simplify internal tile support by moving the directory structure to avoid the unnecessary directory levels in tile/tilegx both on generic and linux folders. Checked with a build for tilegx-linux-gnu and tilegx-linux-gnu-32 with and without the patch, there is no difference in generated binary with a dissassemble. * stdlib/bug-getcontext.c (do_test): Remove tilepro mention in comment. * sysdeps/tile/preconfigure: Remove tilegx folder. * sysdeps/tile/tilegx/Implies: Move definitions to ... * sysdeps/tile/Implies: ... here. * sysdeps/tile/tilegx/Makefile: Move rules to ... * sysdeps/tile/Makefile: ... here. * sysdeps/tile/tilegx/atomic-machine.h: Move definitions to ... * sysdeps/tile/atomic-machine.h: ... here. Add include guards. * sysdeps/tile/tilegx/bits/wordsize.h: Move to ... * sysdeps/tile/bits/wordsize.h: ... here. * sysdeps/tile/tilegx/*: Move to ... * sysdeps/tile/*: ... here. * sysdeps/tile/tilegx/tilegx32/Implies: Move to ... * sysdeps/tile/tilegx32/Implies: ... here. * sysdeps/tile/tilegx/tilegx64/Implies: Move to ... * sysdeps/tile/tilegx64/Implies: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/Makefile: Move definitions to ... * sysdeps/unix/sysv/linux/tile/Makefile: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/*: Move to ... * sysdeps/unix/sysv/linux/tile/*: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/*: Move to ... * sysdeps/unix/sysv/linux/tile/tilegx32/*: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/*: Move to ... * sysdeps/unix/sysv/linux/tile/tilegx64/*: ... here.
2017-12-20Remove tilepro-*-linux-gnu supportAdhemerval Zanella
As from previous discussions [1] this patch removes tileprox-*-linux-gnu support from GLIBC. This patch is a straigthfoward one, which just remove tilepro specific implementation and configurations (no sysdep simplfication or reorganization is done). * README: Remove tilepro-*-linux-gnu from supported architecture. * scripts/build-many-glibcs.py: Likewise. * sysdeps/tile/__tls_get_addr.S (__tls_get_addr): Likewise. * sysdeps/tile/crti.S (PREINIT_FUNCTION): Likewise. * sysdeps/tile/dl-machine.h (ELF_MACHINE_NAME, elf_machine_matches_host, elf_machine_dynamic, elf_machine_load_address, elf_machine_runtime_setup, reloc_howto howto, elf_machine_rela): Likewise * sysdeps/tile/dl-start.S (_start): Likewise. * sysdeps/tile/memcmp.c (DBLALIGN, REVBYTES): Likewise. * sysdeps/tile/memcopy.h (MEMCPY_OK_FOR_FWD_MEMMOVE, MEMCPY_OK_FOR_FWD_MEMMOVE, op_t): Likewise. * sysdeps/tile/nptl/pthread_spin_lock.c (TNS, CMPTNS): Likewise. * sysdeps/tile/nptl/pthread_spin_trylock.c (TNS): Likewise. * sysdeps/tile/nptl/pthread_spin_unlock.c (pthread_spin_unlock): Likewise. * sysdeps/tile/nptl/tls.h (DB_THREAD_SELF): Likewise. * sysdeps/tile/preconfigure: Likewise. * sysdeps/tile/stackguard-macros.h (STACK_CHK_GUARD, POINTER_CHK_GUARD): Likewise. * sysdeps/tile/stackinfo.h (__stackinfo_sub): Likewise. * sysdeps/tile/start.S (_start): Likewise. * sysdeps/tile/tls-macros.h (TLS_GD_OFFSET, TLS_IE_OFFSET, _TLS_LE): Likewise. * sysdeps/tile/sysdep.h (REGSIZE): Likewise. (LD, LD4U, ST, ST4, BNEZ, BEQZ, BEQZT, BGTZ, CMPEQI, CMPEQ, CMOVEQZ, CMOVNEZ): Remove. * sysdeps/unix/sysv/linux/tile/bits/environments.h (__ILP32_OFF32_CFLAGS, __ILP32_OFFBIG_CFLAGS, __ILP32_OFF32_LDFLAGS, __ILP32_OFFBIG_LDFLAGS, __LP64_OFF64_CFLAGS, __LP64_OFF64_LDFLAGS): Likewise. * sysdeps/tile/wordcopy.c (DBLALIGN): Likewise. * sysdeps/tile/tilepro/Implies: Remove file. * sysdeps/tile/tilepro/atomic-machine.h: Likewise. * sysdeps/tile/tilepro/bits/wordsize.h: Likewise. * sysdeps/tile/tilepro/memchr.c: Likewise. * sysdeps/tile/tilepro/memcpy.S: Likewise. * sysdeps/tile/tilepro/memset.c: Likewise. * sysdeps/tile/tilepro/memusage.h: Likewise. * sysdeps/tile/tilepro/rawmemchr.c: Likewise. * sysdeps/tile/tilepro/strchr.c: Likewise. * sysdeps/tile/tilepro/strchrnul.c: Likewise. * sysdeps/tile/tilepro/strlen.c: Likewise. * sysdeps/tile/tilepro/strrchr.c: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/Implies: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/c++-types.data: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/jmp_buf-macros.h: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/ldconfig.h: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/tile/sysconf.c (linux_sysconf): Remove tilepro mention in comment. [1] https://sourceware.org/ml/libc-alpha/2017-12/msg00038.html
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