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[209.132.180.131]) by mx.google.com with ESMTPS id h64si5118342pge.262.2019.05.20.10.53.59 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 May 2019 10:53:59 -0700 (PDT) Received-SPF: pass (google.com: domain of libc-alpha-return-102120-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; Authentication-Results: mx.google.com; dkim=pass header.i=@sourceware.org header.s=default header.b="HF9pO/Tb"; dkim=pass header.i=@linaro.org header.s=google header.b=mEe36NLs; spf=pass (google.com: domain of libc-alpha-return-102120-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) smtp.mailfrom="libc-alpha-return-102120-patch=linaro.org@sourceware.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; q=dns; s=default; b=rCicoDY2oBq0Tbeg269bETF3xx5rNSJ PkpN8Dfn77nBaDQjVat0B5vEwVtuTjJFYxV0SEyhFseGdTZHq09MlQAcPe/Cu0vN fHQMtDg1h0LtvNYd+FxOSMHU8pjdE1fuib6JJS56pNM3lRoRc5bL0H2Z0eUPDwIp 8+aFI3NhOs3c= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; s=default; bh=4xiXz9ni7q9OsO6HVo4CAcODP7I=; b=HF9pO /TboJkJOQLVZ2auyUm2DL3XV7Jh4X5T6XZNtlQ4ON+64Pet9A3luyuWlkTggbGz7 bKEtSvru1drBendXwYiYNRjH1r0MjwRUUzpxGP41MLSpG7VG2T/EsPWsdrKt8O9t Gd4qc4e5D5WrOA7PdWuRnn2V3DGTOvuKCF+Jlg= Received: (qmail 35113 invoked by alias); 20 May 2019 17:53:51 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 35103 invoked by uid 89); 20 May 2019 17:53:51 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-20.6 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_NUMSUBJECT, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.1 spammy=i686linuxgnu, IPC, i686-linux-gnu X-HELO: mail-ua1-f66.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=HeRooVsum/1eFJ8eZE+dnGlraYCb8LUAUTJRJMbR4Lw=; b=mEe36NLsl5bcoqrJsdqyqVNQO7AAphA1yKKuPailxyW1F2FiBi1Q6BfAe8mBda+3LB JjE3DvvOWUxt7i0Ga5AmwSd2TceWNlu/kxsi7VvzynRfcQy3FJt4WqkG3nlxr8uFtyU4 /wi1UkVHqEcS/bnVJ5n3RAMEXejAOB8BRNHzNnY5djeaEv6NecrpGQtLNPRzdSrs2o2s iFHkYlkTvj7M3s+6veTskOmegaI56cY2unweD0wyJ3OSef7C6DH/HIngUhARe5f8WDRY sSUChvCT0HMdbDF1E0LWOdGYcuACDCjzeYs1wxAKna1NGQyH/JGuwUfAxrcrrKNVUUAA Tf7g== Return-Path: From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH v2 2/2] Update sysvipc kernel-features.h files for Linux 5.1 Date: Mon, 20 May 2019 14:53:41 -0300 Message-Id: <20190520175341.17310-2-adhemerval.zanella@linaro.org> In-Reply-To: <20190520175341.17310-1-adhemerval.zanella@linaro.org> References: <20190520175341.17310-1-adhemerval.zanella@linaro.org> Changes from previous version: - Fixed condition to use wire-up syscalls for semop and semtimedop. -- Linux 5.1 adds missing SySV IPC syscalls to the syscall table for remanining one that still uses the ipc syscall on glibc (m68k, mips-o32, powerpc, s390, sh, and sparc32). However the newly added direct ipc syscall are different than the old ones: 1. They do not expect IPC_64, meaning __IPC_64 should be set to zero when new syscalls are used. And new syscalls can not be used for compat functions like __old_semctl (to emulated old sysvipc it requires to use the old __NR_ipc syscall without __IPC_64). Thus IPC_64 is redefined for newer kernels on affected ABIs. 2. semtimedop and semop does not exist on 32-bit ABIs (only semtimedop_time64 is supplied). The provided syscall wrappers only uses the wire-up syscall if __NR_semtimedop and __NR_semop are also defined. Checked on x86_64-linux-gnu and i686-linux-gnu on both a 4.15 kernel configure with default options and sysvipc tests on a 5.1.2 kernel with --enable-kernel=5.1. * sysdeps/unix/sysv/linux/i386/kernel-features.h. (__ASSUME_DIRECT_SYSVIPC_SYSCALLS): Only undefine if [__LINUX_KERNEL_VERSION < 0x050100]. (__ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/m68k/kernel-features.h (__ASSUME_DIRECT_SYSVIPC_SYSCALLS, __ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_DIRECT_SYSVIPC_SYSCALLS, __ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h (__ASSUME_DIRECT_SYSVIPC_SYSCALLS, __ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/s390/kernel-features.h (__ASSUME_DIRECT_SYSVIPC_SYSCALLS, __ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/sh/kernel-features.h (__ASSUME_DIRECT_SYSVIPC_SYSCALLS, __ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/sparc/kernel-features.h (__ASSUME_DIRECT_SYSVIPC_SYSCALLS, __ASSUME_SYSVIPC_DEFAULT_IPC_64): Likewise. * sysdeps/unix/sysv/linux/msgctl.c (__old_msgctl): Only use wire-up syscall if __ASSUME_SYSVIPC_DEFAULT_IPC_64 is not defined. * sysdeps/unix/sysv/linux/semctl.c (__old_semctl): Likewise. * sysdeps/unix/sysv/linux/shmctl.c (__old_shmctl): Likewise. * sysdeps/unix/sysv/linux/semop.c (semop): Only use wire-up if __NR_semop is also defined. * sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Likewise. --- sysdeps/unix/sysv/linux/i386/kernel-features.h | 8 +++++--- sysdeps/unix/sysv/linux/m68k/kernel-features.h | 8 +++++--- sysdeps/unix/sysv/linux/mips/kernel-features.h | 12 ++++++++---- sysdeps/unix/sysv/linux/msgctl.c | 6 +++++- sysdeps/unix/sysv/linux/powerpc/kernel-features.h | 8 +++++--- sysdeps/unix/sysv/linux/s390/kernel-features.h | 8 +++++--- sysdeps/unix/sysv/linux/semctl.c | 6 +++++- sysdeps/unix/sysv/linux/semop.c | 4 +++- sysdeps/unix/sysv/linux/semtimedop.c | 4 +++- sysdeps/unix/sysv/linux/sh/kernel-features.h | 8 +++++--- sysdeps/unix/sysv/linux/shmctl.c | 6 +++++- sysdeps/unix/sysv/linux/sparc/kernel-features.h | 10 ++++++---- 12 files changed, 60 insertions(+), 28 deletions(-) -- 2.17.1 diff --git a/sysdeps/unix/sysv/linux/i386/kernel-features.h b/sysdeps/unix/sysv/linux/i386/kernel-features.h index 411eb2fca4..8c398ddd1f 100644 --- a/sysdeps/unix/sysv/linux/i386/kernel-features.h +++ b/sysdeps/unix/sysv/linux/i386/kernel-features.h @@ -43,9 +43,11 @@ # undef __ASSUME_SENDTO_SYSCALL #endif -/* i686 only supports ipc syscall. */ -#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS -#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +/* i686 only supports ipc syscall before 5.1. */ +#if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +#endif #undef __ASSUME_CLONE_DEFAULT #define __ASSUME_CLONE_BACKWARDS 1 diff --git a/sysdeps/unix/sysv/linux/m68k/kernel-features.h b/sysdeps/unix/sysv/linux/m68k/kernel-features.h index 46418977c8..c9be6bc167 100644 --- a/sysdeps/unix/sysv/linux/m68k/kernel-features.h +++ b/sysdeps/unix/sysv/linux/m68k/kernel-features.h @@ -50,6 +50,8 @@ # undef __ASSUME_SET_ROBUST_LIST #endif -/* m68k only supports ipc syscall. */ -#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS -#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +/* m68k only supports ipc syscall before 5.1. */ +#if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +#endif diff --git a/sysdeps/unix/sysv/linux/mips/kernel-features.h b/sysdeps/unix/sysv/linux/mips/kernel-features.h index b9fa89c81d..8c85193a7a 100644 --- a/sysdeps/unix/sysv/linux/mips/kernel-features.h +++ b/sysdeps/unix/sysv/linux/mips/kernel-features.h @@ -31,8 +31,12 @@ pairs to start with an even-number register. */ #if _MIPS_SIM == _ABIO32 # define __ASSUME_ALIGNED_REGISTER_PAIRS 1 -/* mips32 only supports ipc syscall. */ -# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +/* mips32 only supports ipc syscall before 5.1. */ +# if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +# else +# endif /* The o32 MIPS fadvise64 syscall behaves as fadvise64_64. */ # define __ASSUME_FADVISE64_AS_64_64 1 @@ -40,6 +44,8 @@ /* mips32 support wire-up network syscalls. */ # define __ASSUME_RECV_SYSCALL 1 # define __ASSUME_SEND_SYSCALL 1 +#else +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 #endif /* Define that mips64-n32 is a ILP32 ABI to set the correct interface to @@ -50,5 +56,3 @@ #undef __ASSUME_CLONE_DEFAULT #define __ASSUME_CLONE_BACKWARDS 1 - -#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 diff --git a/sysdeps/unix/sysv/linux/msgctl.c b/sysdeps/unix/sysv/linux/msgctl.c index 2d49567686..1f034ebc6f 100644 --- a/sysdeps/unix/sysv/linux/msgctl.c +++ b/sysdeps/unix/sysv/linux/msgctl.c @@ -61,7 +61,11 @@ int attribute_compat_text_section __old_msgctl (int msqid, int cmd, struct __old_msqid_ds *buf) { -#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +#if defined(__ASSUME_DIRECT_SYSVIPC_SYSCALLS) \ + && !defined(__ASSUME_SYSVIPC_DEFAULT_IPC_64) + /* For architecture that have wire-up msgctl but also have __IPC_64 to a + value different than default (0x0), it means the old syscall was done + using __NR_ipc. */ return INLINE_SYSCALL_CALL (msgctl, msqid, cmd, buf); #else return INLINE_SYSCALL_CALL (ipc, IPCOP_msgctl, msqid, cmd, 0, buf); diff --git a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h index e787182396..fd2f22d730 100644 --- a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h +++ b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h @@ -44,9 +44,11 @@ #include_next -/* powerpc only supports ipc syscall. */ -#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS -#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +/* powerpc only supports ipc syscall before 5.1. */ +#if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +#endif #undef __ASSUME_CLONE_DEFAULT #define __ASSUME_CLONE_BACKWARDS 1 diff --git a/sysdeps/unix/sysv/linux/s390/kernel-features.h b/sysdeps/unix/sysv/linux/s390/kernel-features.h index 57077ea4cc..7997a78e1d 100644 --- a/sysdeps/unix/sysv/linux/s390/kernel-features.h +++ b/sysdeps/unix/sysv/linux/s390/kernel-features.h @@ -45,9 +45,11 @@ # undef __ASSUME_SENDTO_SYSCALL #endif -/* s390 only supports ipc syscall. */ -#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS -#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +/* s390 only supports ipc syscall before 5.1. */ +#if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +#endif #undef __ASSUME_CLONE_DEFAULT #define __ASSUME_CLONE_BACKWARDS2 diff --git a/sysdeps/unix/sysv/linux/semctl.c b/sysdeps/unix/sysv/linux/semctl.c index d428400681..46bce6baac 100644 --- a/sysdeps/unix/sysv/linux/semctl.c +++ b/sysdeps/unix/sysv/linux/semctl.c @@ -98,7 +98,11 @@ __old_semctl (int semid, int semnum, int cmd, ...) break; } -# ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +#if defined(__ASSUME_DIRECT_SYSVIPC_SYSCALLS) \ + && !defined(__ASSUME_SYSVIPC_DEFAULT_IPC_64) + /* For architecture that have wire-up semctl but also have __IPC_64 to a + value different than default (0x0), it means the old syscall was done + using __NR_ipc. */ return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd, arg.array); # else return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd, diff --git a/sysdeps/unix/sysv/linux/semop.c b/sysdeps/unix/sysv/linux/semop.c index 119ee06878..e401f3487b 100644 --- a/sysdeps/unix/sysv/linux/semop.c +++ b/sysdeps/unix/sysv/linux/semop.c @@ -26,7 +26,9 @@ int semop (int semid, struct sembuf *sops, size_t nsops) { -#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS + /* semop wire-up syscall is not exported for 32-bit ABIs (they have + semtimedop_time64 instead with uses a 64-bit time_t). */ +#if defined(__ASSUME_DIRECT_SYSVIPC_SYSCALLS) && defined (__NR_semop) return INLINE_SYSCALL_CALL (semop, semid, sops, nsops); #else return INLINE_SYSCALL_CALL (ipc, IPCOP_semop, semid, nsops, 0, sops); diff --git a/sysdeps/unix/sysv/linux/semtimedop.c b/sysdeps/unix/sysv/linux/semtimedop.c index 1d746c4117..589ffc3fc8 100644 --- a/sysdeps/unix/sysv/linux/semtimedop.c +++ b/sysdeps/unix/sysv/linux/semtimedop.c @@ -27,7 +27,9 @@ int semtimedop (int semid, struct sembuf *sops, size_t nsops, const struct timespec *timeout) { -#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS + /* semtimedop wire-up syscall is not exported for 32-bit ABIs (they have + semtimedop_time64 instead with uses a 64-bit time_t). */ +#if defined(__ASSUME_DIRECT_SYSVIPC_SYSCALLS) && defined (__NR_semtimedop) return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, timeout); #else return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, diff --git a/sysdeps/unix/sysv/linux/sh/kernel-features.h b/sysdeps/unix/sysv/linux/sh/kernel-features.h index cf68256abe..1721b89158 100644 --- a/sysdeps/unix/sysv/linux/sh/kernel-features.h +++ b/sysdeps/unix/sysv/linux/sh/kernel-features.h @@ -41,9 +41,11 @@ before the offset. */ #define __ASSUME_PRW_DUMMY_ARG 1 -/* sh only supports ipc syscall. */ -#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS -#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +/* sh only supports ipc syscall before 5.1. */ +#if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +#endif /* Support for several syscalls was added in 4.8. */ #if __LINUX_KERNEL_VERSION < 0x040800 diff --git a/sysdeps/unix/sysv/linux/shmctl.c b/sysdeps/unix/sysv/linux/shmctl.c index b322f205f8..40aa115b24 100644 --- a/sysdeps/unix/sysv/linux/shmctl.c +++ b/sysdeps/unix/sysv/linux/shmctl.c @@ -63,7 +63,11 @@ int attribute_compat_text_section __old_shmctl (int shmid, int cmd, struct __old_shmid_ds *buf) { -#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +#if defined(__ASSUME_DIRECT_SYSVIPC_SYSCALLS) \ + && !defined(__ASSUME_SYSVIPC_DEFAULT_IPC_64) + /* For architecture that have wire-up shmctl but also have __IPC_64 to a + value different than default (0x0), it means the old syscall was done + using __NR_ipc. */ return INLINE_SYSCALL_CALL (shmctl, shmid, cmd, buf); #else return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd, 0, buf); diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h index 82c8236c23..b8f2212002 100644 --- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h +++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h @@ -58,10 +58,12 @@ # undef __NR_pause #endif -/* sparc only supports ipc syscall. */ -#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS -#ifndef __arch64__ -# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +/* sparc only supports ipc syscall before 5.1. */ +#if __LINUX_KERNEL_VERSION < 0x050100 +# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS +# if !defined __arch64__ +# undef __ASSUME_SYSVIPC_DEFAULT_IPC_64 +# endif #endif /* Support for the renameat2 syscall was added in 3.16. */