about summary refs log tree commit diff
path: root/sysdeps/unix/sysv
Commit message (Collapse)AuthorAgeFilesLines
* Fix macro API for __USE_KERNEL_IPV6_DEFS.Carlos O'Donell2016-06-021-1/+3
| | | | | | | | | | | | | | | | The use of __USE_KERNEL_IPV6_DEFS with ifndef is bad practice per: https://sourceware.org/glibc/wiki/Wundef. This change moves it to use 'if' and always define the macro. Please note that this is not the only problem with this code. I have a series of fixes after this one to resolve breakage with this code and add regression tests for it via compile-only source testing (to be discussed in another thread). Unfortunately __USE_KERNEL_XATTR_DEFS is set by the kernel and not glibc, and uses 'define', so we can't fix that yet.
* posix: Call _exit in failure case for posix_spawn{p} (BZ#20178)Adhemerval Zanella2016-05-301-1/+1
| | | | | | | | | | | This patch call _exit instead of exit in failure case for the spawned child in Linux posix_spawn{p} implementation. Tested on x86_64. [BZ #20178] * sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Call _exit on failure instead of exit.
* network: Fix missing bits from {recv,send}{m}msg standard com,plianceAdhemerval Zanella2016-05-262-2/+2
| | | | | | | | | | | | | | | | | | | This patch fixes wrong/missing bits from the Fix {recv,send}{m}msg standard compliance (BZ#16919) patches: * nptl/Makefile sets CFLAGS-oldrecvfrom.c, but there's no such file as oldrecvfrom.c. It should be oldsendmsg.c as defined by ChangeLog. * sysdeps/unix/sysv/linux/hppa/Versions and sysdeps/unix/sysv/linux/i386/Versions list a symbol recvms instead of recvmsg at version GLIBC_2.24. * nptl/Makefile (CFLAGS-oldrecvfrom.c): Remove rule. (CFLAGS-oldsendmsg.c): Add rule. * sysdeps/unix/sysv/linux/hppa/Versions [libc] (GLIBC_2.24): Correct recvmsg symbol name. * sysdeps/unix/sysv/linux/i386/Versions [libc] (GLIBC_2.24): Likewise.
* network: recvmmsg and sendmmsg standard compliance (BZ#16919)Adhemerval Zanella2016-05-2515-44/+275
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | POSIX specifies that both msghdr::msg_iovlen and msghdr::msg_controllen to be of size int and socklen_t respectively, however Linux implements it as a size_t. So for 64-bits architecture where sizeof of size_t is larger than socklen_t, both sendmmsg and recvmmsg need to adjust the mmsghdr::msg_hdr internal fields before issuing the syscall itself. This patch fixes it by operating on the padding if it the case. For recvmmsg, the most straightfoward case, only zero padding the fields is suffice. However, for sendmmsg, where adjusting the buffer is out of the contract (since it may point to a read-only data), the function is rewritten to use sendmsg instead (which from previous patch allocates a temporary msghdr to operate on). Also for 64-bit ports that requires it, a new recvmmsg and sendmmsg compat version is created (which uses size_t for both cmsghdr::cmsg_len and internal Tested on x86_64, i686, aarch64, armhf, and powerpc64le. * sysdeps/unix/sysv/linux/Makefile [$(subdir) = socket] (sysdep_routines): Add oldrecvmmsg and oldsendmmsg. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add recvmmsg and sendmmsg. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/oldrecvmmsg.c: New file. * sysdeps/unix/sysv/linux/oldsendmmsg.c: Likewise. * sysdeps/unix/sysv/linux/recvmmsg.c (__recvmmsg): Adjust msghdr iovlen and controllen fields to adjust to POSIX specification. * sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Likewise.
* network: recvmsg and sendmsg standard compliance (BZ#16919)Adhemerval Zanella2016-05-2560-37/+350
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | POSIX specifies that both msghdr::msg_iovlen and msghdr::msg_controllen to be of size int and socklen_t respectively. However Linux defines it as both size_t and for 64-bit it requires some adjustments to make the functions standard compliance. This patch fixes it by creating a temporary header and zeroing the pad fields for 64-bits architecture where size of size_t exceeds the size of the int. Also the new recvmsg and sendmsg implementation is only added on libc, with libpthread only containing a compat symbol. Tested on x86_64, i686, aarch64, armhf, and powerpc64le. * conform/data/sys/socket.h-data (msghdr.msg_iovlen): Remove xfail- and change to correct expected type. (msghdr.msg_controllen): Likewise. (cmsghdr.cmsg_len): Likewise. * sysdeps/unix/sysv/linux/bits/socket.h (msghdr.msg_iovlen): Fix expected POSIX assumption about the size. (msghdr.msg_controllen): Likewise. (msghdr.__glibc_reserved1): Likewise. (msghdr.__glibc_reserved2): Likewise. (cmsghdr.cmsg_len): Likewise. (cmsghdr.__glibc_reserved1): Likewise. * nptl/Makefile (libpthread-routines): Remove ptw-recvmsg and ptw-sendmsg. Add ptw-oldrecvmsg and ptw-oldsendmsg. (CFLAGS-sendmsg.c): Remove rule. (CFLAGS-recvmsg.c): Likewise. (CFLAGS-oldsendmsg.c): Add rule. (CFLAGS-oldrecvmsg.c): Likewise. * sysdeps/unix/sysv/linux/alpha/Versions [libc] (GLIBC_2.24): Add recvmsg and sendmsg. * sysdeps/unix/sysv/linux/aarch64/Version [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/arm/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/hppa/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/i386/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/ia64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/m68k/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/microblaze/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/nios2/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/powerpc/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/sh/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/sparc/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/Versions [libc] (GLIBC_2.24): Likewise. ( sysdeps/unix/sysv/linux/tile/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/Versions [libc] (GLIBC_2.24): Likewise. ( sysdeps/unix/sysv/linux/x86_64/64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/x84_64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/Makefile [$(subdir) = socket)] (sysdep_headers): Add oldrecvmsg and oldsendmsg. (CFLAGS-sendmsg.c): Add rule. (CFLAGS-recvmsg.c): Likewise. (CFLAGS-oldsendmsg.c): Likewise. (CFLAGS-oldrecvmsg.c): Likewise. * sysdeps/unix/sysv/linux/check_native.c (__check_native): Fix msghdr initialization. * sysdeps/unix/sysv/linux/check_pf.c (make_request): Likewise. * sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_request): Likewise. * sysdeps/unix/sysv/linux/oldrecvmsg.c: New file. * sysdeps/unix/sysv/linux/oldsendmsg.c: Likewise. * sysdeps/unix/sysv/linux/recvmsg.c (__libc_recvmsg): Adjust msghdr iovlen and controllen fields to adjust to POSIX specification. * sysdeps/unix/sysv/linux/sendmsg.c (__libc_sendmsg): Likewise. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: New version and added recvmsg and sendmsg. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdepe/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. Likewise. Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise. Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* Adjust kernel-features.h defaults for recvmsg and sendmsgAdhemerval Zanella2016-05-2515-28/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the auto-generation for recvmsg and sendmsg syscall and adjust the kernel-features.h for all architectures supported on Linux. This patch follows the idea of 'Adjust kernel-features.h defaults for socket syscalls.' (35ade9f11b9007ee9683529f2d33698ff35255c8) by define __ASSUME_SENDMSG_SYSCALL and __ASSUME_RECVMSG_SYSCALL as supported by default and undefine it for the architecture that do not support it directly. The main rationale is to make is easier add code wrapper over the syscall to fix BZ#16919 (recvmsg standard compliance). Tested on x86_64, i686, aarch64, armhf, and powerpc64le. * sysdeps/unix/sysv/linux/alpha/syscalls.list (recvmsg): Remove from auto-generation. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/arm/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/generic/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/hppa/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/ia64/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/mips/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/x86_64/syscalls.list (recvmsg): Likewise. (sendmsg): Likewise. * sysdeps/unix/sysv/linux/i386/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL): Remove. [__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_SENDMSG_SYSCALL): Undefine. [__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_RECVMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SENDMSG_SYSCALL): Define. (__ASSUME_RECVMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/m68k/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL): Remove. [__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_SENDMSG_SYSCALL): Undefine. [__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_RECVMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL): Remove. [__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_SENDMSG_SYSCALL): Undefine. [__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_RECVMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_SENDMSG_SYSCALL): Undefine. (__ASSUME_RECVMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h (__ASSUME_SENDMSG_SYSCALL): Likewise. (__ASSUME_RECVMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/sh/kernel-features.h (__ASSUME_SENDMSG_SYSCALL): Likewise. (__ASSUME_RECVMSG_SYSCALL): Likewise.
* Make padding in struct sockaddr_storage explicit [BZ #20111]Florian Weimer2016-05-232-4/+46
| | | | | | | | | | This avoids aliasing issues with GCC 6 in -fno-strict-aliasing mode. (With implicit padding, not all data is copied.) This change makes it explicit that struct sockaddr_storage is only 126 bytes large on m68k (unlike elsewhere, where we end up with the requested 128 bytes). The new test case makes sure that this does not happen on other architectures.
* Update sysdeps/unix/sysv/linux/bits/socket.h for Linux 4.6.Joseph Myers2016-05-231-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates sysdeps/unix/sysv/linux/bits/socket.h for new constants added in Linux 4.6. AF_KCM / PF_KCM are added. SOL_KCM is new, and I added a lot of SOL_* values postdating the last one present in the header, since I saw no apparent reason for the set in glibc to stop at SOL_IRDA. MSG_BATCH is added; Linux also has MSG_SENDPAGE_NOTLAST which is not in glibc, but given the comment starts "sendpage() internal" I presume it's correct for it not to be in glibc. (Note that this is a case where the Linux kernel header with userspace relevant values is *not* a uapi header but include/linux/socket.h - I don't know why, but at least this header, as well as uapi headers, needs reviewing for glibc-relevant changes each release.) Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * sysdeps/unix/sysv/linux/bits/socket.h (PF_KCM): New macro. (PF_MAX): Update value. (AF_KCM): New macro. (SOL_NETBEUI): Likewise. (SOL_LLC): Likewise. (SOL_DCCP): Likewise. (SOL_NETLINK): Likewise. (SOL_TIPC): Likewise. (SOL_RXRPC): Likewise. (SOL_PPPOL2TP): Likewise. (SOL_BLUETOOTH): Likewise. (SOL_PNPIPE): Likewise. (SOL_RDS): Likewise. (SOL_IUCV): Likewise. (SOL_CAIF): Likewise. (SOL_ALG): Likewise. (SOL_NFC): Likewise. (SOL_KCM): Likewise. (MSG_BATCH): New enum value and macro.
* Don't call internal _Unwind_Resume via PLTH.J. Lu2016-05-182-2/+2
| | | | | | | | | | | There is no need to call the internal funtion, _Unwind_Resume, which is defined in unwind-forcedunwind.c, via PLT. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S (__condvar_cleanup2): Remove JUMPTARGET from _Unwind_Resume call. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (__condvar_cleanup1): Likewise.
* Don't call internal __pthread_unwind via PLTH.J. Lu2016-05-181-2/+4
| | | | | | | | | | | | Add PTHREAD_UNWIND to replace JUMPTARGET(__pthread_unwind) and define it to __GI___pthread_unwind within libpthread. * sysdeps/unix/sysv/linux/x86_64/cancellation.S (PTHREAD_UNWIND): New (__pthread_unwind): Renamed to ... (PTHREAD_UNWIND): This. (__pthread_enable_asynccancel): Replace JUMPTARGET(__pthread_unwind) with PTHREAD_UNWIND.
* Add CLONE_NEWCGROUP from Linux 4.6 to bits/sched.h.Joseph Myers2016-05-181-0/+1
| | | | | | | | | | | This patch adds CLONE_NEWCGROUP, new in Linux 4.6, to sysdeps/unix/sysv/linux/bits/sched.h. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * sysdeps/unix/sysv/linux/bits/sched.h [__USE_GNU] (CLONE_NEWCGROUP): New macro.
* Add Q_GETNEXTQUOTA from Linux 4.6 to sys/quota.h.Joseph Myers2016-05-181-0/+1
| | | | | | | | | | | This patch adds Q_GETNEXTQUOTA, new in Linux 4.6, to sysdeps/unix/sysv/linux/sys/quota.h. Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). * sysdeps/unix/sysv/linux/sys/quota.h [_LINUX_QUOTA_VERSION >= 2] (Q_GETNEXTQUOTA): New macro.
* S390: Add support for vdso getcpu symbol.Stefan Liebler2016-05-094-0/+10
| | | | | | | | This patch adds support for symbol __kernel_getcpu in vDSO, which is available with kernel 4.5. Now sched_getcpu is using this symbol if available in mapped vDSO by defining macro HAVE_GETCPU_VSYSCALL. If not available at runtime, the former syscall is used.
* CVE-2016-1234: glob: Do not copy d_name field of struct dirent [BZ #19779]Florian Weimer2016-05-041-0/+22
| | | | | | Instead, we store the data we need from the return value of readdir in an object of the new type struct readdir_result. This type is independent of the layout of struct dirent.
* powerpc: Add missing insn in swapcontext [BZ #20004]Paul E. Murphy2016-05-031-0/+1
| | | | | A missing instruction was discovered in the compat version of swapcontext while running the GCC test suite.
* powerpc: Fix clone CLONE_VM compareAdhemerval Zanella2016-05-021-1/+1
| | | | | | | | | | | | This patch fixes the clone CLONE_VM change from 0cb313f (BZ#19957) where the commit changed the register that contains the save flags argument to compare with (from r28 to r29). This patch changes back to correct register. Tested on powerpc32 (thanks to Tulio Magno Quites Machado Filho). * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone): Fix flags CLONE_VM compare.
* m68k: avoid local labels in symbol tableAndreas Schwab2016-04-301-4/+4
|
* Fix clone (CLONE_VM) pid/tid reset (BZ#19957)Adhemerval Zanella2016-04-2921-141/+220
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As discussed in libc-alpha [1] current clone with CLONE_VM (without CLONE_THREAD set) will reset the pthread pid/tid fields to -1. The issue is since memory is shared between the parent and child it will clobber parent's cached pid/tid leading to internal inconsistencies if the value is not restored. And even it is restored it may lead to racy conditions when between set/restore a thread might invoke pthread function that validate the pthread with INVALID_TD_P/INVALID_NOT_TERMINATED_TD_P and thus get wrong results. As stated in BZ19957, previously reports of this behaviour was close with EWONTFIX due the fact usage of clone outside glibc is tricky since glibc requires consistent internal pthread, while using clone directly may not provide it. However since now posix_spawn uses clone (CLONE_VM) to fixes various issues related to previous vfork usage this issue requires fixing. The vfork implementation also does something similar, but instead it negates and restores only the *pid* field and functions that might access its value know to handle such case (getpid, raise and pthread ones that uses INVALID_TD_P/INVALID_NOT_TERMINATED_TD_P macros that check only *tid* field). Also vfork does not call __clone directly, instead calling either __NR_vfork or __NR_clone directly. So this patch removes this clone behavior by avoiding setting the pthread pid/tid field for CLONE_VM. There is no need to check for CLONE_THREAD, since the minimum supported kernel in all architecture implies that CLONE_VM must be used with CLONE_THREAD, otherwise clone returns EINVAL. Instead of current approach of: int clone(int (*fn)(void *), void *child_stack, int flags, ...) [...] if (flags & CLONE_THREAD) goto do_syscall; pid_t new_value; if (flags & CLONE_VM) new_value = -1; else new_value = getpid (); THREAD_SETMEM (THREAD_SELF, pid, new_value); THREAD_SETMEM (THREAD_SELF, tid, new_value); do_syscall: [...] The new approach uses: int clone(int (*fn)(void *), void *child_stack, int flags, ...) [...] if (flags & CLONE_VM) goto do_syscall; pid_t new_value = getpid (); THREAD_SETMEM (THREAD_SELF, pid, new_value); THREAD_SETMEM (THREAD_SELF, tid, new_value); do_syscall: [...] It also removes the linux tst-getpid2.c test which expects the previous behavior and instead add another clone test. Tested on x86_64, i686, x32, powerpc64le, aarch64, armhf, s390, and s390x. I also did limited check on mips32 and sparc64 (using the new added test). I also got reviews from both m68k, hppa, and tile. So I presume for these architecture the patch works. The fixes for alpha, microblaze, sh, ia64, and nio2 have not been tested. [1] https://sourceware.org/ml/libc-alpha/2016-04/msg00307.html * sysdeps/unix/sysv/linux/Makefile [$(subdir) == nptl] (test): Remove tst-getpid2. (test): Add tst-clone2. * sysdeps/unix/sysv/linux/tst-clone2.c: New file. * sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Do not change pid/tid fields for CLONE_VM. * sysdeps/unix/sysv/linux/arm/clone.S: Likewise. * sysdeps/unix/sysv/linux/i386/clone.S: Likewise. * sysdeps/unix/sysv/linux/mips/clone.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/clone.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise. * sysdeps/unix/sysv/linux/tst-getpid2.c: Remove file.
* Add missing iucv related defines.Stefan Liebler2016-04-271-0/+10
| | | | | | | | | | | this patch adds the missing SOL_IUCV socket level definition and socket options SO_IPRMDATA_MSG, SO_MSGLIMIT, SO_MSGSIZE which can be used with get/setsockopt(). SCM_IUCV_TRGCLS is needed to send/receive ancillary data with send/recvmsg(). The defines are copied from kernel-source: include/net/iucv/af_iucv.h include/linux/socket.h
* Fix stdlib/tst-makecontext regression for Nios IIChung-Lin Tang2016-04-251-0/+12
|
* Fix pread consolidation on ports that require argument alignmentAdhemerval Zanella2016-04-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the __ALIGNMENT_{ARG,COUNT} definition for ports that define __ASSUME_ALIGNED_REGISTER_PAIRS by including the kernel-features.h (where it is defined if the case). This was shown on arm with failing cases: FAIL: debug/tst-chk1 FAIL: debug/tst-chk2 FAIL: debug/tst-chk3 FAIL: debug/tst-chk4 FAIL: debug/tst-chk5 FAIL: debug/tst-chk6 FAIL: debug/tst-lfschk1 FAIL: debug/tst-lfschk2 FAIL: debug/tst-lfschk3 FAIL: debug/tst-lfschk4 FAIL: debug/tst-lfschk5 FAIL: debug/tst-lfschk6 FAIL: posix/tst-preadwrite FAIL: posix/tst-preadwrite64 The patches fixes it. Tested on armhf. * sysdeps/unix/sysv/linux/sysdep.h: Include kernel-features.h.
* Remove union wait [BZ #19613]Florian Weimer2016-04-141-1/+1
| | | | | | | The overloading approach in the W* macros was incompatible with integer expressions of a type different from int. Applications using union wait and these macros will have to migrate to the POSIX-specified int status type.
* VDSO support for MIPSMatthew Fortune2016-04-127-0/+133
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for using the implementations of gettimeofday() and clock_gettime() provided by the kernel in the VDSO. The VDSO will always provide clock_gettime() as CLOCK_{REALTIME,MONOTONIC}_COARSE can be implemented regardless of platform. CLOCK_{REALTIME,MONOTONIC}, along with gettimeofday(), are only implemented on platforms which make use of either the CP0 count or GIC as their clocksource. On other platforms, the VDSO does not provide the __vdso_gettimeofday symbol, as it is never useful. The VDSO functions return ENOSYS when they encounter an unsupported request, in which case glibc should fall back to the standard syscall. Tested with upstream kernel 4.5 and QEMU emulating Malta. ./vdsotest gettimeofday bench gettimeofday: syscall: 1021 nsec/call gettimeofday: libc: 262 nsec/call gettimeofday: vdso: 174 nsec/call * sysdeps/unix/sysv/linux/mips/Makefile (sysdep_routines): Include dl-vdso. * sysdeps/unix/sysv/linux/mips/Versions: Add __vdso_clock_gettime. * sysdeps/unix/sysv/linux/mips/init-first.c: New file. * sysdeps/unix/sysv/linux/mips/libc-vdso.h: New file. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h: (INTERNAL_VSYSCALL_CALL): Define to be compatible with MIPS definitions of INTERNAL_SYSCALL_{ERROR_P,ERRNO}. (HAVE_CLOCK_GETTIME_VSYSCALL): Define. (HAVE_GETTIMEOFDAY_VSYSCALL): Define. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h: Likewise.
* Consolidate pwrite/pwrite64 implementationsAdhemerval Zanella2016-04-1116-427/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates all the pwrite/pwrite64 implementation for Linux in only one (sysdeps/unix/sysv/linux/pwrite{64}.c). It also removes the syscall from the auto-generation using assembly macros. For pwrite{64} offset argument placement the new SYSCALL_LL{64} macro is used. For pwrite ports that do not define __NR_pwrite will use __NR_pwrite64 and for pwrite64 ports that dot define __NR_pwrite64 will use __NR_pwrite for the syscall. Checked on x86_64, x32, i386, aarch64, and ppc64le. * sysdeps/unix/sysv/linux/arm/pwrite.c: Remove file. * sysdeps/unix/sysv/linux/arm/pwrite64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/pwrite64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (prite): Remove syscalls generation. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h [__NR_pwrite64] (__NR_write): Remove define. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h [__NR_pwrite64] (__NR_write): Remove define. * sysdeps/unix/sysv/linux/pwrite.c [__NR_pwrite64] (__NR_pwrite): Remove define. (__libc_pwrite): Use SYSCALL_LL macro on offset argument. * sysdeps/unix/sysv/linux/pwrite64.c [__NR_pwrite64] (__NR_pwrite): Remove define. (__libc_pwrite64): Use SYSCALL_LL64 macro on offset argument. * sysdeps/unix/sysv/linux/sh/pwrite.c: Rewrite using default Linux implementation as base. * sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise. * sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise. * sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
* Consolidate pread/pread64 implementationsAdhemerval Zanella2016-04-1117-414/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates all the pread/pread64 implementation for Linux in only one (sysdeps/unix/sysv/linux/pread.c). It also removes the syscall from the auto-generation using assembly macros. For pread{64} offset argument placement the new SYSCALL_LL{64} macro is used. For pread ports that do not define __NR_pread will use __NR_pread64 and for pread64 ports that dot define __NR_pread64 will use __NR_pread for the syscall. Checked on x86_64, x32, i386, aarch64, and ppc64le. * sysdeps/unix/sysv/linux/arm/pread.c: Remove file. * sysdeps/unix/sysv/linux/arm/pread64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: Likewise, * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/pread64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (pread): Remove syscall generation. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h [__NR_pread64] (__NR_pread): Remove define. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: [__NR_pread64] (__NR_pread): Likewise. * sysdeps/unix/sysv/linux/pread.c [__NR_pread64] (__NR_pread): Remove define. (__libc_pread): Use SYSCALL_LL macro on offset argument. * sysdeps/unix/sysv/linux/pread64.c [__NR_pread64] (__NR_pread): Remove define. (__libc_pread64): Use SYSCALL_LL64 macro on offset argument. * sysdeps/unix/sysv/linux/sh/pread.c: Rewrite using default Linux implementation as base. * sysdeps/unix/sysv/linux/sh/pread64.c: Likewise. * sysdeps/unix/sysv/linux/mips/pread.c: Likewise. * sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
* Consolidate off_t/off64_t syscall argument passingAdhemerval Zanella2016-04-114-10/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch add three new macros (SYSCALL_LL, SYSCALL_LL64, and __ASSUME_WORDSIZE64_ILP32) to use along with off_t and off64_t argument syscalls. The rationale for this change is: 1. Remove multiple implementations for the same syscall for different architectures (for instance, pread have 6 different implementations). 2. Also remove the requirement to use syscall wrappers for cancellable entrypoints. The macro usage should be used along __ALIGNMENT_ARG to follow ABI constrains for architecture where it applies. For instance, pread can be rewritten as: return SYSCALL_CANCEL (pread, fd, buf, count, __ALIGNMENT_ARG SYSCALL_LL (offset)); Another macro, SYSCALL_LL64, is provided for off64_t. The macro __ASSUME_WORDSIZE64_ILP32 is used by the ABI to define is uses 64-bit register even if ABI is ILP32 (for instance x32 and mips64-n32). The changes itself are not currently used in any implementation, so no code change is expected. * sysdeps/unix/sysv/linux/generic/sysdep.h (__ALIGNMENT_ARG): Move definition. (__ALIGNMENT_COUNT): Likewise. * sysdeps/unix/sysv/linux/sysdep.h (__ALIGNMENT_ARG): To here. (__ALIGNMENT_COUNT): Likewise. (SYSCALL_LL): New define. (SYSCALL_LL64): Likewise. * sysdeps/unix/sysv/linux/mips/kernel-features.h: [_MIPS_SIM == _ABIO32] (__ASSUME_WORDSIZE64_ILP32): Define. * sysdeps/unix/sysv/linux/x86_64/kernel-features.h: [ILP32] (__ASUME_WORDSIZE64_ILP32): Likewise.
* Define __ASSUME_ALIGNED_REGISTER_PAIRS for missing portsAdhemerval Zanella2016-04-113-0/+16
| | | | | | | | | | | | | | | | This patch defines __ASSUME_ALIGNED_REGISTER_PAIRS for the missing ports that require 64-bit value (e.g., long long) to be aligned to an even register pair in argument passing. No code change is expected, tested with builds for powerpc32, mips-o32, and armhf. * sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_ALIGNED_REGISTER_PAIRS): Define. * sysdeps/unix/sysv/linux/mips/kernel-features.h [_MIPS_SIM == _ABIO32] (__ASSUME_ALIGNED_REGISTER_PAIRS): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h [!__powerpc64__] (__ASSUME_ALIGNED_REGISTER_PAIRS): Likewise.
* Fix build with HAVE_AUX_VECTORSamuel Thibault2016-04-111-3/+3
| | | | | | * sysdeps/unix/sysv/linux/ldsodefs.h (HAVE_AUX_VECTOR): Define before including <ldsodefs.h>. * sysdeps/nacl/ldsodefs.h (HAVE_AUX_VECTOR): Likewise.
* Fix termios.h XCASE namespace (bug 19925).Joseph Myers2016-04-085-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | bits/termios.h (various versions under sysdeps/unix/sysv/linux) defines XCASE if defined __USE_MISC || defined __USE_XOPEN. This macro was removed in the 2001 edition of POSIX, and is not otherwise reserved, so should not be defined for 2001 and later versions of POSIX. This patch fixes the conditions accordingly (leaving the macro defined for __USE_MISC, so still in the default namespace). Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). [BZ #19925] * sysdeps/unix/sysv/linux/alpha/bits/termios.h (XCASE): Do not define if [!__USE_MISC && __USE_XOPEN2K]. * sysdeps/unix/sysv/linux/bits/termios.h (XCASE): Likewise. * sysdeps/unix/sysv/linux/mips/bits/termios.h (XCASE): Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/termios.h (XCASE): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/termios.h (XCASE): Likewise. * conform/Makefile (test-xfail-XOPEN2K/termios.h/conform): Remove variable. (test-xfail-XOPEN2K8/termios.h/conform): Likewise.
* [microblaze] Remove __ASSUME_FUTIMESAT.Joseph Myers2016-03-292-33/+0
| | | | | | | | | | | | | | | MicroBlaze has a special version of futimesat.c because it gained the futimesat syscall later than other non-asm-generic architectures. Now the minimum kernel is recent enough that this syscall can always be assumed to be present for MicroBlaze, so this patch removes the special version and the __ASSUME_FUTIMESAT macro, resulting in the sysdeps/unix/sysv/linux/futimesat.c version being used. Untested. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_FUTIMESAT): Remove macro. * sysdeps/unix/sysv/linux/microblaze/futimesat.c: Remove file.
* Synchronize <sys/personality.h> with kernel headersAurelien Jarno2016-03-281-0/+3
| | | | | | | | | <sys/personality.h> is out of sync with kernel headers, missing the UNAME26, FDPIC_FUNCPTRS and PER_LINUX_FDPIC entries. Fix that. Changelog: * sysdeps/unix/sysv/linux/sys/personality.h (UNAME26, FDPIC_FUNCPTRS, PER_LINUX_FDPIC): Add.
* Assume __NR_utimensat is always definedAurelien Jarno2016-03-233-22/+0
| | | | | | | | | | | | | | | | With the 2.6.32 minimum kernel on x86 and 3.2 on other architectures, __NR_utimensat is always defined. Changelog: * sysdeps/unix/sysv/linux/futimens.c (futimens) [__NR_utimensat]: Make code unconditional. [!__NR_utimensat]: Remove conditional code. * sysdeps/unix/sysv/linux/lutimes.c (lutimes) [__NR_utimensat]: Make code unconditional. [!__NR_utimensat]: Remove conditional code. * sysdeps/unix/sysv/linux/utimensat.c (utimensat) [__NR_utimensat]: Make code unconditional. [!__NR_utimensat]: Remove conditional code.
* Assume __NR_openat is always definedAurelien Jarno2016-03-231-4/+0
| | | | | | | | | With the 2.6.32 minimum kernel on x86 and 3.2 on other architectures, __NR_openat is always defined. Changelog: * sysdeps/unix/sysv/linux/dl-openat64.c (openat64) [__NR_openat]: Make code unconditional.
* x86, pthread_cond_*wait: Do not depend on %eax not being clobberedNick Alcock2016-03-232-0/+2
| | | | | | | | | | | | | | | | | | | | | | The x86-specific versions of both pthread_cond_wait and pthread_cond_timedwait have (in their fall-back-to-futex-wait slow paths) calls to __pthread_mutex_cond_lock_adjust followed by __pthread_mutex_unlock_usercnt, which load the parameters before the first call but then assume that the first parameter, in %eax, will survive unaffected. This happens to have been true before now, but %eax is a call-clobbered register, and this assumption is not safe: it could change at any time, at GCC's whim, and indeed the stack-protector canary checking code clobbers %eax while checking that the canary is uncorrupted. So reload %eax before calling __pthread_mutex_unlock_usercnt. (Do this unconditionally, even when stack-protection is not in use, because it's the right thing to do, it's a slow path, and anything else is dicing with death.) * sysdeps/unix/sysv/linux/i386/pthread_cond_timedwait.S: Reload call-clobbered %eax on retry path. * sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S: Likewise.
* Remove __ASSUME_GETDENTS64_SYSCALL.Joseph Myers2016-03-222-114/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the __ASSUME_GETDENTS64_SYSCALL macro, as its definition is constant given the new kernel version requirements (and was constant anyway before those requirements except for MIPS n32). Note that the "#ifdef __NR_getdents64" conditional *is* still needed, because MIPS n64 only has the getdents syscall (being a 64-bit ABI, that syscall is 64-bit; the difference between the two on 64-bit architectures is where d_type goes). If MIPS n64 were to gain the getdents64 syscall and we wanted to use it conditionally on the kernel version at runtime we'd have to revert this patch, but I think that's unlikely (and in any case, we could follow the simpler approach of undefining __NR_getdents64 if the syscall can't be assumed, just like we do for accept4 / recvmmsg / sendmmsg syscalls on architectures where socketcall support came first). Most of the getdents.c changes are reindentation. Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_GETDENTS64_SYSCALL): Remove macro. * sysdeps/unix/sysv/linux/getdents.c [!__ASSUME_GETDENTS64_SYSCALL]: Remove conditional code. [!have_no_getdents64_defined]: Likewise. (__GETDENTS): Remove __have_no_getdents64 conditional.
* Remove __ASSUME_SIGNALFD4.Joseph Myers2016-03-212-26/+1
| | | | | | | | | | | | | | | | Current Linux kernel version requirements mean the signalfd4 syscall can always be assumed to be available. This patch removes __ASSUME_SIGNALFD4 and associated conditionals. Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SIGNALFD4): Remove macro. * sysdeps/unix/sysv/linux/signalfd.c: Do not include <kernel-features.h>. (signalfd) [__NR_signalfd4]: Make code unconditional. (signalfd) [!__ASSUME_SIGNALFD4]: Remove conditional code.
* posix: Fix posix_spawn implict check styleAdhemerval Zanella2016-03-211-1/+1
| | | | | | | | | | This patch fixes the implicit check style add in 2a69f853c for the general convention one. Checked on x86_64. * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix implict checks style.
* Use JUMPTARGET in x86-64 pthreadH.J. Lu2016-03-213-7/+3
| | | | | | | | | | | | | When PLT may be used, JUMPTARGET should be used instead calling the function directly. * sysdeps/unix/sysv/linux/x86_64/cancellation.S (__pthread_enable_asynccancel): Use JUMPTARGET to call __pthread_unwind. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S (__condvar_cleanup2): Use JUMPTARGET to call _Unwind_Resume. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (__condvar_cleanup1): Likewise.
* posix: Fix posix_spawn invalid memory accessAdhemerval Zanella2016-03-201-1/+1
| | | | | | | | | | | | | Current Linux posix_spawn spawn do not test if the pid argument is valid before trying to update it for success case. This patch fixes it. Tested on x86_64 and i686. * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix invalid memory access where posix_spawn success and pid argument is null. * posix/tst-spawn.c (do_test): Add posix_spawn null pid argument for success case.
* Remove __ASSUME_EVENTFD2, move eventfd to syscalls.list.Joseph Myers2016-03-173-52/+1
| | | | | | | | | | | | | | | | Given current Linux kernel version requirements, we can assume the presence of the eventfd2 syscall. This means that __ASSUME_EVENTFD2 can be removed, and a syscalls.list entry suffices for eventfd instead of needing a .c file. This patch implements those changes. Tested for x86_64 and x86 (not that that means much, given the lack of testsuite coverage for eventfd). * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_EVENTFD2): Remove macro. * sysdeps/unix/sysv/linux/eventfd.c: Remove file. * sysdeps/unix/sysv/linux/syscalls.list (eventfd): New syscall entry.
* Remove __ASSUME_FALLOCATE.Joseph Myers2016-03-172-36/+12
| | | | | | | | | | | | | | | | Given current Linux kernel version requirements, we can always assume the fallocate syscall to be available. This patch removes __ASSUME_FALLOCATE and a test for whether __NR_fallocate is defined. Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_FALLOCATE): Remove macro. * sysdeps/unix/sysv/linux/wordsize-64/posix_fallocate.c: Do not include <kernel-features.h>. [!__ASSUME_FALLOCATE]: Remove conditional code. (posix_fallocate) [__NR_fallocate]: Make code unconditional.
* Remove __ASSUME_PPOLL.Joseph Myers2016-03-152-29/+1
| | | | | | | | | | | | | | | | | | With current kernel version requirements, the ppoll Linux syscall can be assumed to be present on all architectures; this patch removes the __ASSUME_PPOLL macro and conditionals on it and on whether __NR_ppoll is defined. (Note that the same can't yet be done for pselect, because MicroBlaze only wired that up in the syscall table in 3.15.) Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PPOLL): Remove macro. * sysdeps/unix/sysv/linux/ppoll.c: Do not include <kernel-features.h>. [__NR_ppoll]: Make code unconditional. [!__ASSUME_PPOLL]: Remove conditional code.
* Adjust kernel-features.h defaults for socket syscalls.Joseph Myers2016-03-1517-174/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adjusts the defaults for kernel-features.h macros relating to availability of accept4, recvmmsg and sendmmsg. It is not intended to affect which macros end up getting defined in any configuration. At present, all architectures with syscalls for those functions need to define __ASSUME_*_SYSCALL macros; in particular, any new architecture needs its own kernel-features.h file for that purpose, though it may not otherwise need such a header. Those macros are then used together with __ASSUME_SOCKETCALL to define macros for whether the functions in question are available. This patch changes the defaults so that the syscalls are assumed to be available by default with recent-enough kernels, and it is the responsibility of architecture headers to undefine the macros if they are unavailable in supported kernels at least as recent as the version where the architecture-independent functionality was introduced. The __ASSUME_<function> macros are defaulted similarly instead of being defined based on other macros (defining based on other macros would no longer work because the #undefs appear after the generic header is included), so where the syscall being unavailable means the function is unavailable this means the architecture header has to undefine the __ASSUME_<function> macro; this only affects __ASSUME_ACCEPT4 for ia64, as other cases where the syscalls were added late enough to be relevant with current kernel version requirements are all on socketcall architectures. As a consequence, the AArch64 and Nios II kernel-features.h header files are removed, and others simplified. When the minimum kernel version becomes 4.3 or later on all architectures, the syscalls in question can just be assumed unconditionally, permitting further simplification. Tested for x86_64, x86 and powerpc (that installed shared libraries are unchanged by the patch, and testsuite for x86_64 and x86). * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Define unconditionally. (__ASSUME_ACCEPT4): Likewise. [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL): Define. [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG): Likewise. * sysdeps/unix/sysv/linux/aarch64/kernel-features.h: Remove file. * sysdeps/unix/sysv/linux/nios2/kernel-features.h: Likewise. * sysdeps/unix/sysv/linux/alpha/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Do not define. (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/hppa/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/i386/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL): Likewise. (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x040300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x040300]. * sysdeps/unix/sysv/linux/ia64/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Do not define. (__ASSUME_SENDMMSG_SYSCALL): Likewise. (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x030300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x030300]. [__LINUX_KERNEL_VERSION < 0x030300] (__ASSUME_ACCEPT4): Undefine. * sysdeps/unix/sysv/linux/m68k/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x040300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x040300]. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Do not define. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x030300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x030300]. * sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Do not define. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x040300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x040300]. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/sh/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Do not define. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/sparc/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/tile/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86_64/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL): Likewise.
* Update glibc headers for Linux 4.5.Joseph Myers2016-03-143-0/+4
| | | | | | | | | | | | | | | This patch updates the glibc headers with the defines MADV_FREE, IPV6_HDRINCL and EPOLLEXCLUSIVE that are added in Linux 4.5. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * bits/mman-linux.h [__USE_MISC] (MADV_FREE): New macro. * sysdeps/unix/sysv/linux/hppa/bits/mman.h [__USE_MISC] (MADV_FREE): Likewise. * sysdeps/unix/sysv/linux/bits/in.h (IPV6_HDRINCL): Likewise. * sysdeps/unix/sysv/linux/sys/epoll.h (enum EPOLL_EVENTS): Add EPOLLEXCLUSIVE.
* Add _arch_/_cpu_ to index_*/bit_* in x86 cpu-features.hH.J. Lu2016-03-101-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | index_* and bit_* macros are used to access cpuid and feature arrays o struct cpu_features. It is very easy to use bits and indices of cpuid array on feature array, especially in assembly codes. For example, sysdeps/i386/i686/multiarch/bcopy.S has HAS_CPU_FEATURE (Fast_Rep_String) which should be HAS_ARCH_FEATURE (Fast_Rep_String) We change index_* and bit_* to index_cpu_*/index_arch_* and bit_cpu_*/bit_arch_* so that we can catch such error at build time. [BZ #19762] * sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h (EXTRA_LD_ENVVARS): Add _arch_ to index_*/bit_*. * sysdeps/x86/cpu-features.c (init_cpu_features): Likewise. * sysdeps/x86/cpu-features.h (bit_*): Renamed to ... (bit_arch_*): This for feature array. (bit_*): Renamed to ... (bit_cpu_*): This for cpu array. (index_*): Renamed to ... (index_arch_*): This for feature array. (index_*): Renamed to ... (index_cpu_*): This for cpu array. [__ASSEMBLER__] (HAS_FEATURE): Add and use field. [__ASSEMBLER__] (HAS_CPU_FEATURE)): Pass cpu to HAS_FEATURE. [__ASSEMBLER__] (HAS_ARCH_FEATURE)): Pass arch to HAS_FEATURE. [!__ASSEMBLER__] (HAS_CPU_FEATURE): Replace index_##name and bit_##name with index_cpu_##name and bit_cpu_##name. [!__ASSEMBLER__] (HAS_ARCH_FEATURE): Replace index_##name and bit_##name with index_arch_##name and bit_arch_##name.
* mips: terminate the FDE before the return trampoline in makecontextAurelien Jarno2016-03-091-0/+7
| | | | | | | | | | | | | | | | | In makecontext the FDE needs to be terminated before the return trampoline otherwise backtrace called within a context created by makecontext yields infinite backtrace. This bug has been present for a long time, stdlib/tst-makecontext did not fail until recent commit e535ce25. Tested on mips-linux-gnu and mips64el-linux-gnuabi64 and mips-linux-gnu, no regression. This fixes stdlib/tst-makecontext on MIPS. Changelog: [BZ #19792] * sysdeps/unix/sysv/linux/mips/makecontext.S (__makecontext): Terminate FDE before return label.
* posix: New Linux posix_spawn{p} implementationAdhemerval Zanella2016-03-0721-0/+436
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a new posix_spawn{p} implementation for Linux. The main difference is it uses the clone syscall directly with CLONE_VM and CLONE_VFORK flags and a direct allocated stack. The new stack and start function solves most the vfork limitation (possible parent clobber due stack spilling). The remaning issue are related to signal handling: 1. That no signal handlers must run in child context, to avoid corrupt parent's state. 2. Child must synchronize with parent to enforce stack deallocation and to possible return execv issues. The first one is solved by blocking all signals in child, even NPTL-internal ones (SIGCANCEL and SIGSETXID). The second issue is done by a stack allocation in parent and a synchronization with using a pipe or waitpid (in case or error). The pipe has the advantage of allowing the child signal an exec error (checked with new tst-spawn2 test). There is an inherent race condition in pipe2 usage for architectures that do not support the syscall directly. In such cases the a pipe plus fctnl is used instead and it may lead to file descriptor leak in parent (as decribed by fcntl documentation). The child process stack is allocate with a mmap with MAP_STACK flag using default architecture stack size. Although it is slower than use a stack buffer from parent, it allows some slack for the compatibility code to run scripts with no shebang (which may use a buffer with size depending of argument list count). Performance should be similar to the vfork default posix implementation and way faster than fork path (vfork on mostly linux ports are basically clone with CLONE_VM plus CLONE_VFORK). The only difference is the syscalls required for the stack allocation/deallocation. It fixes BZ#10354, BZ#14750, and BZ#18433. Tested on i386, x86_64, powerpc64le, and aarch64. [BZ #14750] [BZ #10354] [BZ #18433] * include/sched.h (__clone): Add hidden prototype. (__clone2): Likewise. * include/unistd.h (__dup): Likewise. * posix/Makefile (tests): Add tst-spawn2. * posix/tst-spawn2.c: New file. * sysdeps/posix/dup.c (__dup): Add hidden definition. * sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/arm/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/i386/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/ia64/clone2.S (__clone): Likewise. * sysdeps/unix/sysv/linux/m68k/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/microblaze/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/mips/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/nios2/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/sh/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/tile/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/x86_64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/nptl-signals.h (____nptl_is_internal_signal): New function. * sysdeps/unix/sysv/linux/spawni.c: New file.
* Or bit_Prefer_MAP_32BIT_EXEC in EXTRA_LD_ENVVARSH.J. Lu2016-03-031-1/+1
| | | | | | | | | We should turn on bit_Prefer_MAP_32BIT_EXEC in EXTRA_LD_ENVVARS without overriding other bits. [BZ #19758] * sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h (EXTRA_LD_ENVVARS): Or bit_Prefer_MAP_32BIT_EXEC.
* Call x86-64 __setcontext directlyH.J. Lu2016-03-011-1/+1
| | | | | | | | | | | Since x86-64 __start_context calls the internal __setcontext: 5089: 00000000000417e0 145 FUNC LOCAL DEFAULT 13 __setcontext it should call __setcontext directly. * sysdeps/unix/sysv/linux/x86_64/__start_context.S (__start_context): Call __setcontext directly.
* Remove kernel-features.h conditionals on pre-3.2 kernels.Joseph Myers2016-02-2611-157/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch follows up on the increase in minimum kernel version by removing conditionals in non-x86, non-x86_64 kernel-features.h headers that are now constant for all supported kernel versions. * sysdeps/unix/sysv/linux/alpha/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional. [__LINUX_KERNEL_VERSION >= 0x030200]: Likewise. [__LINUX_KERNEL_VERSION < 0x020621]: Remove conditional code. * sysdeps/unix/sysv/linux/arm/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional. [__LINUX_KERNEL_VERSION >= 0x020624]: Likewise. [__LINUX_KERNEL_VERSION >= 0x030000]: Likewise. * sysdeps/unix/sysv/linux/hppa/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020622]: Likewise. [__LINUX_KERNEL_VERSION >= 0x030100]: Likewise. [__LINUX_KERNEL_VERSION < 0x020625]: Remove conditional code. * sysdeps/unix/sysv/linux/ia64/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional. [__LINUX_KERNEL_VERSION >= 0x030000]: Likewise. * sysdeps/unix/sysv/linux/m68k/kernel-features.h [__LINUX_KERNEL_VERSION < 0x030000]: Remove conditional code. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional. [__LINUX_KERNEL_VERSION < 0x020621]: Remove conditional code. [__LINUX_KERNEL_VERSION < 0x020625]: Likewise. * sysdeps/unix/sysv/linux/mips/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional. [__LINUX_KERNEL_VERSION >= 0x030100]: Likewise. [_MIPS_SIM == _ABIN32 && __LINUX_KERNEL_VERSION < 0x020623]: Remove conditional code. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020625]: Make code unconditional. [__LINUX_KERNEL_VERSION >= 0x030000]: Likewise. * sysdeps/unix/sysv/linux/sh/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020625]: Likewise. [__LINUX_KERNEL_VERSION >= 0x030000]: Likewise. [__LINUX_KERNEL_VERSION < 0x020625]: Remove conditional code. * sysdeps/unix/sysv/linux/sparc/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional. [__LINUX_KERNEL_VERSION >= 0x030000]: Likewise. * sysdeps/unix/sysv/linux/tile/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-06 04:43:27 +0000