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linux/arch/arm64/include/asm/unistd.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-03 05:44:50 +00:00
/* SPDX-License-Identifier: GPL-2.0-only */
arm64: System calls handling This patch adds support for system calls coming from 64-bit applications. It uses the asm-generic/unistd.h definitions with the canonical set of system calls. The private system calls are only used for 32-bit (compat) applications as 64-bit ones can set the TLS and flush the caches entirely from user space. The sys_call_table is just an array defined in a C file and it contains pointers to the syscall functions. The array is 4KB aligned to allow the use of the ADRP instruction (longer range ADR) in entry.S. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-03-05 11:49:31 +00:00
/*
* Copyright (C) 2012 ARM Ltd.
*/
UAPI: Split compound conditionals containing __KERNEL__ in Arm64 Split compound conditionals containing __KERNEL__ in Arm64 where possible to make it easier for the UAPI disintegration scripts to handle them. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2012-10-04 11:10:18 +00:00
#ifdef CONFIG_COMPAT
arm64: Do not include asm/unistd32.h in asm/unistd.h This patch only includes asm/unistd32.h where necessary and removes its inclusion in the asm/unistd.h file. The __SYSCALL_COMPAT guard is dropped. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Will Deacon <will.deacon@arm.com>
2012-10-10 14:27:04 +00:00
#define __ARCH_WANT_COMPAT_STAT64
#define __ARCH_WANT_SYS_GETHOSTNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_GETPGRP
#define __ARCH_WANT_SYS_NICE
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK
#define __ARCH_WANT_COMPAT_SYS_SENDFILE
y2038: utimes: Rework #ifdef guards for compat syscalls After changing over to 64-bit time_t syscalls, many architectures will want compat_sys_utimensat() but not respective handlers for utime(), utimes() and futimesat(). This adds a new __ARCH_WANT_SYS_UTIME32 to complement __ARCH_WANT_SYS_UTIME. For now, all 64-bit architectures that support CONFIG_COMPAT set it, but future 64-bit architectures will not (tile would not have needed it either, but got removed). As older 32-bit architectures get converted to using CONFIG_64BIT_TIME, they will have to use __ARCH_WANT_SYS_UTIME32 instead of __ARCH_WANT_SYS_UTIME. Architectures using the generic syscall ABI don't need either of them as they never had a utime syscall. Since the compat_utimbuf structure is now required outside of CONFIG_COMPAT, I'm moving it into compat_time.h. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- changed from last version: - renamed __ARCH_WANT_COMPAT_SYS_UTIME to __ARCH_WANT_SYS_UTIME32
2018-04-17 10:03:19 +00:00
#define __ARCH_WANT_SYS_UTIME32
arm64: sanitize copy_thread(), switch to generic fork/vfork/clone Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-21 19:56:52 +00:00
#define __ARCH_WANT_SYS_FORK
#define __ARCH_WANT_SYS_VFORK
arm64: Add __NR_* definitions for compat syscalls This patch adds __NR_* definitions to asm/unistd32.h, moves the __NR_compat_* definitions to asm/unistd.h and removes all the explicit unistd32.h includes apart from the one building the compat syscall table. The aim is to have the compat __NR_* definitions available but without colliding with the native syscall definitions (required by lib/compat_audit.c to avoid duplicating the audit header files between native and compat). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-01-30 17:56:56 +00:00
/*
* Compat syscall numbers used by the AArch64 kernel.
*/
#define __NR_compat_restart_syscall 0
arm64: add seccomp support secure_computing() is called first in syscall_trace_enter() so that a system call will be aborted quickly without doing succeeding syscall tracing if seccomp rules want to deny that system call. On compat task, syscall numbers for system calls allowed in seccomp mode 1 are different from those on normal tasks, and so _NR_seccomp_xxx_32's need to be redefined. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-28 05:26:39 +00:00
#define __NR_compat_exit 1
#define __NR_compat_read 3
#define __NR_compat_write 4
arm64: compat: Add missing syscall numbers vDSO requires gettimeofday() and clock_gettime() syscalls to implement the fallback mechanism. Add the missing syscall numbers to unistd.h for arm64. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Shijith Thotton <sthotton@marvell.com> Tested-by: Andre Przywara <andre.przywara@arm.com> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@armlinux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Huw Davies <huw@codeweavers.com> Link: https://lkml.kernel.org/r/20190621095252.32307-7-vincenzo.frascino@arm.com
2019-06-21 09:52:33 +00:00
#define __NR_compat_gettimeofday 78
arm64: Add __NR_* definitions for compat syscalls This patch adds __NR_* definitions to asm/unistd32.h, moves the __NR_compat_* definitions to asm/unistd.h and removes all the explicit unistd32.h includes apart from the one building the compat syscall table. The aim is to have the compat __NR_* definitions available but without colliding with the native syscall definitions (required by lib/compat_audit.c to avoid duplicating the audit header files between native and compat). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-01-30 17:56:56 +00:00
#define __NR_compat_sigreturn 119
#define __NR_compat_rt_sigreturn 173
arm64: compat: Add missing syscall numbers vDSO requires gettimeofday() and clock_gettime() syscalls to implement the fallback mechanism. Add the missing syscall numbers to unistd.h for arm64. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Shijith Thotton <sthotton@marvell.com> Tested-by: Andre Przywara <andre.przywara@arm.com> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@armlinux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Huw Davies <huw@codeweavers.com> Link: https://lkml.kernel.org/r/20190621095252.32307-7-vincenzo.frascino@arm.com
2019-06-21 09:52:33 +00:00
#define __NR_compat_clock_getres 247
#define __NR_compat_clock_gettime 263
#define __NR_compat_clock_gettime64 403
#define __NR_compat_clock_getres_time64 406
arm64: Add __NR_* definitions for compat syscalls This patch adds __NR_* definitions to asm/unistd32.h, moves the __NR_compat_* definitions to asm/unistd.h and removes all the explicit unistd32.h includes apart from the one building the compat syscall table. The aim is to have the compat __NR_* definitions available but without colliding with the native syscall definitions (required by lib/compat_audit.c to avoid duplicating the audit header files between native and compat). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-01-30 17:56:56 +00:00
/*
* The following SVCs are ARM private.
*/
#define __ARM_NR_COMPAT_BASE 0x0f0000
arm64: compat: Avoid sending SIGILL for unallocated syscall numbers The ARM Linux kernel handles the EABI syscall numbers as follows: 0 - NR_SYSCALLS-1 : Invoke syscall via syscall table NR_SYSCALLS - 0xeffff : -ENOSYS (to be allocated in future) 0xf0000 - 0xf07ff : Private syscall or -ENOSYS if not allocated > 0xf07ff : SIGILL Our compat code gets this wrong and ends up sending SIGILL in response to all syscalls greater than NR_SYSCALLS which have a value greater than 0x7ff in the bottom 16 bits. Fix this by defining the end of the ARM private syscall region and checking the syscall number against that directly. Update the comment while we're at it. Cc: <stable@vger.kernel.org> Cc: Dave Martin <Dave.Martin@arm.com> Reported-by: Pi-Hsun Shih <pihsun@chromium.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-01-03 17:45:07 +00:00
#define __ARM_NR_compat_cacheflush (__ARM_NR_COMPAT_BASE + 2)
#define __ARM_NR_compat_set_tls (__ARM_NR_COMPAT_BASE + 5)
#define __ARM_NR_COMPAT_END (__ARM_NR_COMPAT_BASE + 0x800)
arm64: Add __NR_* definitions for compat syscalls This patch adds __NR_* definitions to asm/unistd32.h, moves the __NR_compat_* definitions to asm/unistd.h and removes all the explicit unistd32.h includes apart from the one building the compat syscall table. The aim is to have the compat __NR_* definitions available but without colliding with the native syscall definitions (required by lib/compat_audit.c to avoid duplicating the audit header files between native and compat). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-01-30 17:56:56 +00:00
arch: wire-up pidfd_open() This wires up the pidfd_open() syscall into all arches at once. Signed-off-by: Christian Brauner <christian@brauner.io> Reviewed-by: David Howells <dhowells@redhat.com> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Kees Cook <keescook@chromium.org> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jann Horn <jannh@google.com> Cc: Andy Lutomirsky <luto@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-api@vger.kernel.org Cc: linux-alpha@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-ia64@vger.kernel.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-mips@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-xtensa@linux-xtensa.org Cc: linux-arch@vger.kernel.org Cc: x86@kernel.org
2019-05-24 10:44:59 +00:00
#define __NR_compat_syscalls 435
arm64: System calls handling This patch adds support for system calls coming from 64-bit applications. It uses the asm-generic/unistd.h definitions with the canonical set of system calls. The private system calls are only used for 32-bit (compat) applications as 64-bit ones can set the TLS and flush the caches entirely from user space. The sys_call_table is just an array defined in a C file and it contains pointers to the syscall functions. The array is 4KB aligned to allow the use of the ADRP instruction (longer range ADR) in entry.S. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-03-05 11:49:31 +00:00
#endif
arm64: Add __NR_* definitions for compat syscalls This patch adds __NR_* definitions to asm/unistd32.h, moves the __NR_compat_* definitions to asm/unistd.h and removes all the explicit unistd32.h includes apart from the one building the compat syscall table. The aim is to have the compat __NR_* definitions available but without colliding with the native syscall definitions (required by lib/compat_audit.c to avoid duplicating the audit header files between native and compat). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-01-30 17:56:56 +00:00
arm64: sanitize copy_thread(), switch to generic fork/vfork/clone Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-21 19:56:52 +00:00
#define __ARCH_WANT_SYS_CLONE
arm64: Implement the compat_sys_call_table in C Unlike the sys_call_table[], the compat one was implemented in sys32.S making it impossible to notice discrepancies between the number of compat syscalls and the __NR_compat_syscalls macro, the latter having to be defined in asm/unistd.h as including asm/unistd32.h would cause conflicts on __NR_* definitions. With this patch, incorrect __NR_compat_syscalls values will result in a build-time error. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Suggested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com>
2015-01-06 16:42:32 +00:00
#ifndef __COMPAT_SYSCALL_NR
UAPI: (Scripted) Disintegrate arch/arm64/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-11 10:05:13 +00:00
#include <uapi/asm/unistd.h>
arm64: Implement the compat_sys_call_table in C Unlike the sys_call_table[], the compat one was implemented in sys32.S making it impossible to notice discrepancies between the number of compat syscalls and the __NR_compat_syscalls macro, the latter having to be defined in asm/unistd.h as including asm/unistd32.h would cause conflicts on __NR_* definitions. With this patch, incorrect __NR_compat_syscalls values will result in a build-time error. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Suggested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com>
2015-01-06 16:42:32 +00:00
#endif
arm64: ftrace: Add system call tracepoint This patch allows system call entry or exit to be traced as ftrace events, ie. sys_enter_*/sys_exit_*, if CONFIG_FTRACE_SYSCALLS is enabled. Those events appear and can be controlled under ${sysfs}/tracing/events/syscalls/ Please note that we can't trace compat system calls here because AArch32 mode does not share the same syscall table with AArch64. Just define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS in order to avoid unexpected results (bogus syscalls reported or even hang-up). Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-04-30 09:54:36 +00:00
#define NR_syscalls (__NR_syscalls)
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