From: Yury Norov <ynorov@caviumnetworks.com> To: Catalin Marinas <catalin.marinas@arm.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Arnd Bergmann <arnd@arndb.de> Cc: Yury Norov <ynorov@caviumnetworks.com>, Andrew Pinski <pinskia@gmail.com>, Andrew Pinski <Andrew.Pinski@caviumnetworks.com>, Adam Borowski <kilobyte@angband.pl>, Chris Metcalf <cmetcalf@ezchip.com>, Steve Ellcey <sellcey@caviumnetworks.com>, Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>, Ramana Radhakrishnan <ramana.gcc@googlemail.com>, Florian Weimer <fweimer@redhat.com>, Bamvor Zhangjian <bamvor.zhangjian@huawei.com>, Andreas Schwab <schwab@suse.de>, Chris Metcalf <cmetcalf@mellanox.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, schwidefsky@de.ibm.com, broonie@kernel.org, Joseph Myers <joseph@codesourcery.com>, christoph.muellner@theobroma-systems.com, szabolcs.nagy@arm.com, klimov.linux@gmail.com, Nathan_Lynch@mentor.com, agraf@suse.de, Prasun.Kapoor@caviumnetworks.com, geert@linux-m68k.org, philipp.tomsich@theobroma-systems.com, manuel.montezelo@gmail.com, linyongting@huawei.com, davem@davemloft.net, zhouchengming1@huawei.com Subject: [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Date: Sun, 4 Jun 2017 15:00:05 +0300 [thread overview] Message-ID: <20170604120009.342-17-ynorov@caviumnetworks.com> (raw) In-Reply-To: <20170604120009.342-1-ynorov@caviumnetworks.com> Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- arch/arm64/include/asm/signal32.h | 3 + arch/arm64/include/asm/signal32_common.h | 27 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/signal32.c | 107 ------------------------ arch/arm64/kernel/signal32_common.c | 135 +++++++++++++++++++++++++++++++ 5 files changed, 166 insertions(+), 108 deletions(-) create mode 100644 arch/arm64/include/asm/signal32_common.h create mode 100644 arch/arm64/kernel/signal32_common.c diff --git a/arch/arm64/include/asm/signal32.h b/arch/arm64/include/asm/signal32.h index e68fcce538e1..1c4ede717bd2 100644 --- a/arch/arm64/include/asm/signal32.h +++ b/arch/arm64/include/asm/signal32.h @@ -13,6 +13,9 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <asm/signal32_common.h> + #ifndef __ASM_SIGNAL32_H #define __ASM_SIGNAL32_H diff --git a/arch/arm64/include/asm/signal32_common.h b/arch/arm64/include/asm/signal32_common.h new file mode 100644 index 000000000000..36c1ebc07a97 --- /dev/null +++ b/arch/arm64/include/asm/signal32_common.h @@ -0,0 +1,27 @@ +/* + * 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/>. + */ +#ifndef __ASM_SIGNAL32_COMMON_H +#define __ASM_SIGNAL32_COMMON_H + +#ifdef CONFIG_COMPAT + +int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from); +int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from); + +int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set); +int get_sigset_t(sigset_t *set, const compat_sigset_t __user *uset); + +#endif /* CONFIG_COMPAT*/ + +#endif /* __ASM_SIGNAL32_COMMON_H */ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 7e0c48f858f1..1dd659907f34 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -30,7 +30,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE arm64-obj-$(CONFIG_AARCH32_EL0) += sys32.o kuser32.o signal32.o \ sys_compat.o entry32.o binfmt_elf32.o arm64-obj-$(CONFIG_ARM64_ILP32) += binfmt_ilp32.o sys_ilp32.o -arm64-obj-$(CONFIG_COMPAT) += entry32_common.o +arm64-obj-$(CONFIG_COMPAT) += entry32_common.o signal32_common.o arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index c747a0fc5d7d..181cc3012bda 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -103,113 +103,6 @@ struct compat_rt_sigframe { #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) -static inline int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set) -{ - compat_sigset_t cset; - - cset.sig[0] = set->sig[0] & 0xffffffffull; - cset.sig[1] = set->sig[0] >> 32; - - return copy_to_user(uset, &cset, sizeof(*uset)); -} - -static inline int get_sigset_t(sigset_t *set, - const compat_sigset_t __user *uset) -{ - compat_sigset_t s32; - - if (copy_from_user(&s32, uset, sizeof(*uset))) - return -EFAULT; - - set->sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); - return 0; -} - -int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) -{ - int err; - - if (!access_ok(VERIFY_WRITE, to, sizeof(*to))) - return -EFAULT; - - /* If you change siginfo_t structure, please be sure - * this code is fixed accordingly. - * It should never copy any pad contained in the structure - * to avoid security leaks, but must copy the generic - * 3 ints plus the relevant union member. - * This routine must convert siginfo from 64bit to 32bit as well - * at the same time. - */ - err = __put_user(from->si_signo, &to->si_signo); - err |= __put_user(from->si_errno, &to->si_errno); - err |= __put_user((short)from->si_code, &to->si_code); - if (from->si_code < 0) - err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, - SI_PAD_SIZE); - else switch (from->si_code & __SI_MASK) { - case __SI_KILL: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - break; - case __SI_TIMER: - err |= __put_user(from->si_tid, &to->si_tid); - err |= __put_user(from->si_overrun, &to->si_overrun); - err |= __put_user(from->si_int, &to->si_int); - break; - case __SI_POLL: - err |= __put_user(from->si_band, &to->si_band); - err |= __put_user(from->si_fd, &to->si_fd); - break; - case __SI_FAULT: - err |= __put_user((compat_uptr_t)(unsigned long)from->si_addr, - &to->si_addr); -#ifdef BUS_MCEERR_AO - /* - * Other callers might not initialize the si_lsb field, - * so check explicitly for the right codes here. - */ - if (from->si_signo == SIGBUS && - (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)) - err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); -#endif - break; - case __SI_CHLD: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_status, &to->si_status); - err |= __put_user(from->si_utime, &to->si_utime); - err |= __put_user(from->si_stime, &to->si_stime); - break; - case __SI_RT: /* This is not generated by the kernel as of now. */ - case __SI_MESGQ: /* But this is */ - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_int, &to->si_int); - break; - case __SI_SYS: - err |= __put_user((compat_uptr_t)(unsigned long) - from->si_call_addr, &to->si_call_addr); - err |= __put_user(from->si_syscall, &to->si_syscall); - err |= __put_user(from->si_arch, &to->si_arch); - break; - default: /* this is just in case for now ... */ - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - break; - } - return err; -} - -int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) -{ - if (copy_from_user(to, from, __ARCH_SI_PREAMBLE_SIZE) || - copy_from_user(to->_sifields._pad, - from->_sifields._pad, SI_PAD_SIZE)) - return -EFAULT; - - return 0; -} - /* * VFP save/restore code. * diff --git a/arch/arm64/kernel/signal32_common.c b/arch/arm64/kernel/signal32_common.c new file mode 100644 index 000000000000..5bddc25dca12 --- /dev/null +++ b/arch/arm64/kernel/signal32_common.c @@ -0,0 +1,135 @@ +/* + * Based on arch/arm/kernel/signal.c + * + * Copyright (C) 1995-2009 Russell King + * Copyright (C) 2012 ARM Ltd. + * Modified by Will Deacon <will.deacon@arm.com> + * + * 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/>. + */ + +#include <linux/compat.h> +#include <linux/signal.h> +#include <linux/ratelimit.h> +#include <linux/uaccess.h> + +#include <asm/esr.h> +#include <asm/fpsimd.h> +#include <asm/signal32_common.h> +#include <asm/unistd.h> + +int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set) +{ + compat_sigset_t cset; + + cset.sig[0] = set->sig[0] & 0xffffffffull; + cset.sig[1] = set->sig[0] >> 32; + + return copy_to_user(uset, &cset, sizeof(*uset)); +} + +int get_sigset_t(sigset_t *set, const compat_sigset_t __user *uset) +{ + compat_sigset_t s32; + + if (copy_from_user(&s32, uset, sizeof(*uset))) + return -EFAULT; + + set->sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); + return 0; +} + +int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) +{ + int err; + + if (!access_ok(VERIFY_WRITE, to, sizeof(*to))) + return -EFAULT; + + /* If you change siginfo_t structure, please be sure + * this code is fixed accordingly. + * It should never copy any pad contained in the structure + * to avoid security leaks, but must copy the generic + * 3 ints plus the relevant union member. + * This routine must convert siginfo from 64bit to 32bit as well + * at the same time. + */ + err = __put_user(from->si_signo, &to->si_signo); + err |= __put_user(from->si_errno, &to->si_errno); + err |= __put_user((short)from->si_code, &to->si_code); + if (from->si_code < 0) + err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, + SI_PAD_SIZE); + else switch (from->si_code & __SI_MASK) { + case __SI_KILL: + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + break; + case __SI_TIMER: + err |= __put_user(from->si_tid, &to->si_tid); + err |= __put_user(from->si_overrun, &to->si_overrun); + err |= __put_user(from->si_int, &to->si_int); + break; + case __SI_POLL: + err |= __put_user(from->si_band, &to->si_band); + err |= __put_user(from->si_fd, &to->si_fd); + break; + case __SI_FAULT: + err |= __put_user((compat_uptr_t)(unsigned long)from->si_addr, + &to->si_addr); +#ifdef BUS_MCEERR_AO + /* + * Other callers might not initialize the si_lsb field, + * so check explicitly for the right codes here. + */ + if (from->si_signo == SIGBUS && + (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)) + err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); +#endif + break; + case __SI_CHLD: + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + err |= __put_user(from->si_status, &to->si_status); + err |= __put_user(from->si_utime, &to->si_utime); + err |= __put_user(from->si_stime, &to->si_stime); + break; + case __SI_RT: /* This is not generated by the kernel as of now. */ + case __SI_MESGQ: /* But this is */ + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + err |= __put_user(from->si_int, &to->si_int); + break; + case __SI_SYS: + err |= __put_user((compat_uptr_t)(unsigned long) + from->si_call_addr, &to->si_call_addr); + err |= __put_user(from->si_syscall, &to->si_syscall); + err |= __put_user(from->si_arch, &to->si_arch); + break; + default: /* this is just in case for now ... */ + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + break; + } + return err; +} + +int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) +{ + if (copy_from_user(to, from, __ARCH_SI_PREAMBLE_SIZE) || + copy_from_user(to->_sifields._pad, + from->_sifields._pad, SI_PAD_SIZE)) + return -EFAULT; + + return 0; +} -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: ynorov@caviumnetworks.com (Yury Norov) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Date: Sun, 4 Jun 2017 15:00:05 +0300 [thread overview] Message-ID: <20170604120009.342-17-ynorov@caviumnetworks.com> (raw) In-Reply-To: <20170604120009.342-1-ynorov@caviumnetworks.com> Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- arch/arm64/include/asm/signal32.h | 3 + arch/arm64/include/asm/signal32_common.h | 27 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/signal32.c | 107 ------------------------ arch/arm64/kernel/signal32_common.c | 135 +++++++++++++++++++++++++++++++ 5 files changed, 166 insertions(+), 108 deletions(-) create mode 100644 arch/arm64/include/asm/signal32_common.h create mode 100644 arch/arm64/kernel/signal32_common.c diff --git a/arch/arm64/include/asm/signal32.h b/arch/arm64/include/asm/signal32.h index e68fcce538e1..1c4ede717bd2 100644 --- a/arch/arm64/include/asm/signal32.h +++ b/arch/arm64/include/asm/signal32.h @@ -13,6 +13,9 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <asm/signal32_common.h> + #ifndef __ASM_SIGNAL32_H #define __ASM_SIGNAL32_H diff --git a/arch/arm64/include/asm/signal32_common.h b/arch/arm64/include/asm/signal32_common.h new file mode 100644 index 000000000000..36c1ebc07a97 --- /dev/null +++ b/arch/arm64/include/asm/signal32_common.h @@ -0,0 +1,27 @@ +/* + * 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/>. + */ +#ifndef __ASM_SIGNAL32_COMMON_H +#define __ASM_SIGNAL32_COMMON_H + +#ifdef CONFIG_COMPAT + +int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from); +int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from); + +int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set); +int get_sigset_t(sigset_t *set, const compat_sigset_t __user *uset); + +#endif /* CONFIG_COMPAT*/ + +#endif /* __ASM_SIGNAL32_COMMON_H */ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 7e0c48f858f1..1dd659907f34 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -30,7 +30,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE arm64-obj-$(CONFIG_AARCH32_EL0) += sys32.o kuser32.o signal32.o \ sys_compat.o entry32.o binfmt_elf32.o arm64-obj-$(CONFIG_ARM64_ILP32) += binfmt_ilp32.o sys_ilp32.o -arm64-obj-$(CONFIG_COMPAT) += entry32_common.o +arm64-obj-$(CONFIG_COMPAT) += entry32_common.o signal32_common.o arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index c747a0fc5d7d..181cc3012bda 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -103,113 +103,6 @@ struct compat_rt_sigframe { #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) -static inline int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set) -{ - compat_sigset_t cset; - - cset.sig[0] = set->sig[0] & 0xffffffffull; - cset.sig[1] = set->sig[0] >> 32; - - return copy_to_user(uset, &cset, sizeof(*uset)); -} - -static inline int get_sigset_t(sigset_t *set, - const compat_sigset_t __user *uset) -{ - compat_sigset_t s32; - - if (copy_from_user(&s32, uset, sizeof(*uset))) - return -EFAULT; - - set->sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); - return 0; -} - -int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) -{ - int err; - - if (!access_ok(VERIFY_WRITE, to, sizeof(*to))) - return -EFAULT; - - /* If you change siginfo_t structure, please be sure - * this code is fixed accordingly. - * It should never copy any pad contained in the structure - * to avoid security leaks, but must copy the generic - * 3 ints plus the relevant union member. - * This routine must convert siginfo from 64bit to 32bit as well - *@the same time. - */ - err = __put_user(from->si_signo, &to->si_signo); - err |= __put_user(from->si_errno, &to->si_errno); - err |= __put_user((short)from->si_code, &to->si_code); - if (from->si_code < 0) - err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, - SI_PAD_SIZE); - else switch (from->si_code & __SI_MASK) { - case __SI_KILL: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - break; - case __SI_TIMER: - err |= __put_user(from->si_tid, &to->si_tid); - err |= __put_user(from->si_overrun, &to->si_overrun); - err |= __put_user(from->si_int, &to->si_int); - break; - case __SI_POLL: - err |= __put_user(from->si_band, &to->si_band); - err |= __put_user(from->si_fd, &to->si_fd); - break; - case __SI_FAULT: - err |= __put_user((compat_uptr_t)(unsigned long)from->si_addr, - &to->si_addr); -#ifdef BUS_MCEERR_AO - /* - * Other callers might not initialize the si_lsb field, - * so check explicitly for the right codes here. - */ - if (from->si_signo == SIGBUS && - (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)) - err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); -#endif - break; - case __SI_CHLD: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_status, &to->si_status); - err |= __put_user(from->si_utime, &to->si_utime); - err |= __put_user(from->si_stime, &to->si_stime); - break; - case __SI_RT: /* This is not generated by the kernel as of now. */ - case __SI_MESGQ: /* But this is */ - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_int, &to->si_int); - break; - case __SI_SYS: - err |= __put_user((compat_uptr_t)(unsigned long) - from->si_call_addr, &to->si_call_addr); - err |= __put_user(from->si_syscall, &to->si_syscall); - err |= __put_user(from->si_arch, &to->si_arch); - break; - default: /* this is just in case for now ... */ - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - break; - } - return err; -} - -int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) -{ - if (copy_from_user(to, from, __ARCH_SI_PREAMBLE_SIZE) || - copy_from_user(to->_sifields._pad, - from->_sifields._pad, SI_PAD_SIZE)) - return -EFAULT; - - return 0; -} - /* * VFP save/restore code. * diff --git a/arch/arm64/kernel/signal32_common.c b/arch/arm64/kernel/signal32_common.c new file mode 100644 index 000000000000..5bddc25dca12 --- /dev/null +++ b/arch/arm64/kernel/signal32_common.c @@ -0,0 +1,135 @@ +/* + * Based on arch/arm/kernel/signal.c + * + * Copyright (C) 1995-2009 Russell King + * Copyright (C) 2012 ARM Ltd. + * Modified by Will Deacon <will.deacon@arm.com> + * + * 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/>. + */ + +#include <linux/compat.h> +#include <linux/signal.h> +#include <linux/ratelimit.h> +#include <linux/uaccess.h> + +#include <asm/esr.h> +#include <asm/fpsimd.h> +#include <asm/signal32_common.h> +#include <asm/unistd.h> + +int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set) +{ + compat_sigset_t cset; + + cset.sig[0] = set->sig[0] & 0xffffffffull; + cset.sig[1] = set->sig[0] >> 32; + + return copy_to_user(uset, &cset, sizeof(*uset)); +} + +int get_sigset_t(sigset_t *set, const compat_sigset_t __user *uset) +{ + compat_sigset_t s32; + + if (copy_from_user(&s32, uset, sizeof(*uset))) + return -EFAULT; + + set->sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); + return 0; +} + +int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) +{ + int err; + + if (!access_ok(VERIFY_WRITE, to, sizeof(*to))) + return -EFAULT; + + /* If you change siginfo_t structure, please be sure + * this code is fixed accordingly. + * It should never copy any pad contained in the structure + * to avoid security leaks, but must copy the generic + * 3 ints plus the relevant union member. + * This routine must convert siginfo from 64bit to 32bit as well + *@the same time. + */ + err = __put_user(from->si_signo, &to->si_signo); + err |= __put_user(from->si_errno, &to->si_errno); + err |= __put_user((short)from->si_code, &to->si_code); + if (from->si_code < 0) + err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, + SI_PAD_SIZE); + else switch (from->si_code & __SI_MASK) { + case __SI_KILL: + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + break; + case __SI_TIMER: + err |= __put_user(from->si_tid, &to->si_tid); + err |= __put_user(from->si_overrun, &to->si_overrun); + err |= __put_user(from->si_int, &to->si_int); + break; + case __SI_POLL: + err |= __put_user(from->si_band, &to->si_band); + err |= __put_user(from->si_fd, &to->si_fd); + break; + case __SI_FAULT: + err |= __put_user((compat_uptr_t)(unsigned long)from->si_addr, + &to->si_addr); +#ifdef BUS_MCEERR_AO + /* + * Other callers might not initialize the si_lsb field, + * so check explicitly for the right codes here. + */ + if (from->si_signo == SIGBUS && + (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)) + err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); +#endif + break; + case __SI_CHLD: + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + err |= __put_user(from->si_status, &to->si_status); + err |= __put_user(from->si_utime, &to->si_utime); + err |= __put_user(from->si_stime, &to->si_stime); + break; + case __SI_RT: /* This is not generated by the kernel as of now. */ + case __SI_MESGQ: /* But this is */ + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + err |= __put_user(from->si_int, &to->si_int); + break; + case __SI_SYS: + err |= __put_user((compat_uptr_t)(unsigned long) + from->si_call_addr, &to->si_call_addr); + err |= __put_user(from->si_syscall, &to->si_syscall); + err |= __put_user(from->si_arch, &to->si_arch); + break; + default: /* this is just in case for now ... */ + err |= __put_user(from->si_pid, &to->si_pid); + err |= __put_user(from->si_uid, &to->si_uid); + break; + } + return err; +} + +int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) +{ + if (copy_from_user(to, from, __ARCH_SI_PREAMBLE_SIZE) || + copy_from_user(to->_sifields._pad, + from->_sifields._pad, SI_PAD_SIZE)) + return -EFAULT; + + return 0; +} -- 2.11.0
next prev parent reply other threads:[~2017-06-04 12:05 UTC|newest] Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-06-04 11:59 Yury Norov 2017-06-04 11:59 ` No subject Yury Norov 2017-06-04 11:59 ` [PATCH 01/20] compat ABI: use non-compat openat and open_by_handle_at variants Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` [PATCH 02/20] 32-bit ABI: introduce ARCH_32BIT_OFF_T config option Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-08 15:09 ` Catalin Marinas 2017-06-08 15:09 ` Catalin Marinas 2017-06-13 11:04 ` Yury Norov 2017-06-13 11:04 ` Yury Norov 2017-06-14 12:31 ` Catalin Marinas 2017-06-14 12:31 ` Catalin Marinas 2017-06-04 11:59 ` [PATCH 03/20] asm-generic: Drop getrlimit and setrlimit syscalls from default list Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-05 14:44 ` James Hogan 2017-06-05 14:44 ` James Hogan 2017-06-05 14:44 ` James Hogan 2017-06-05 14:44 ` James Hogan 2017-06-07 18:48 ` Yury Norov 2017-06-07 18:48 ` Yury Norov 2017-06-07 18:48 ` Yury Norov 2017-06-04 11:59 ` [PATCH 04/20] arm64: ilp32: add documentation on the ILP32 ABI for ARM64 Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` [PATCH 05/20] arm64: rename COMPAT to AARCH32_EL0 in Kconfig Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-08 14:09 ` Catalin Marinas 2017-06-08 14:09 ` Catalin Marinas 2017-06-08 22:40 ` Yury Norov 2017-06-08 22:40 ` Yury Norov 2017-06-09 10:59 ` Catalin Marinas 2017-06-09 10:59 ` Catalin Marinas 2017-06-19 15:58 ` James Morse 2017-06-19 15:58 ` James Morse 2017-06-20 23:10 ` Yury Norov 2017-06-20 23:10 ` Yury Norov 2017-06-22 11:45 ` Yury Norov 2017-06-22 11:45 ` Yury Norov 2017-06-04 11:59 ` [PATCH 06/20] arm64: ensure the kernel is compiled for LP64 Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` [PATCH 07/20] arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` [PATCH 08/20] thread: move thread bits accessors to separated file Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` [PATCH 09/20] arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat) Yury Norov 2017-06-04 11:59 ` Yury Norov 2017-06-04 11:59 ` [PATCH 10/20] arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 Yury Norov 2017-06-04 11:59 ` [PATCH 10/20] arm64: ilp32: add is_ilp32_compat_{task, thread} " Yury Norov 2017-06-04 12:00 ` [PATCH 11/20] arm64: introduce binfmt_elf32.c Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-04 12:00 ` [PATCH 12/20] arm64: ilp32: introduce binfmt_ilp32.c Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-04 12:00 ` [PATCH 13/20] arm64: ilp32: share aarch32 syscall handlers Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-08 14:10 ` Catalin Marinas 2017-06-08 14:10 ` Catalin Marinas 2017-06-08 14:28 ` Arnd Bergmann 2017-06-08 14:28 ` Arnd Bergmann 2017-06-04 12:00 ` [PATCH 14/20] arm64: ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-08 15:05 ` James Morse 2017-06-08 15:05 ` James Morse 2017-06-09 7:06 ` Yury Norov 2017-06-09 7:06 ` Yury Norov 2017-06-04 12:00 ` [PATCH 15/20] arm64: signal: share lp64 signal routines to ilp32 Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-04 12:00 ` Yury Norov [this message] 2017-06-04 12:00 ` [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov 2017-06-19 16:16 ` James Morse 2017-06-19 16:16 ` James Morse 2017-06-20 14:16 ` Yury Norov 2017-06-20 14:16 ` Yury Norov 2017-06-04 12:00 ` [PATCH 17/20] arm64: ilp32: introduce ilp32-specific handlers for sigframe and ucontext Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-04 12:00 ` [PATCH 18/20] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-23 17:03 ` James Morse 2017-06-23 17:03 ` James Morse 2017-06-23 22:28 ` Yury Norov 2017-06-23 22:28 ` Yury Norov 2017-06-27 10:12 ` James Morse 2017-06-27 10:12 ` James Morse 2017-06-04 12:00 ` [PATCH 19/20] arm64:ilp32: add vdso-ilp32 and use for signal return Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-08 15:24 ` Catalin Marinas 2017-06-08 15:24 ` Catalin Marinas 2017-06-08 23:06 ` Yury Norov 2017-06-08 23:06 ` Yury Norov 2017-06-04 12:00 ` [PATCH 20/20] arm64:ilp32: add ARM64_ILP32 to Kconfig Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-06-14 20:16 ` your mail Yury Norov 2017-06-14 20:16 ` Yury Norov -- strict thread matches above, loose matches on Subject: below -- 2017-06-19 15:49 [PATCH v8 00/20] ILP32 for ARM64 Yury Norov 2017-06-19 15:49 ` [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-03-01 19:19 [PATCH v7 resend 00/20] ILP32 for ARM64 Yury Norov 2017-03-01 19:19 ` [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov 2017-03-01 19:19 ` Yury Norov 2017-01-09 11:29 [PATCH v7 00/20] ILP32 for ARM64 Yury Norov 2017-01-09 11:29 ` [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov 2017-01-09 11:29 ` Yury Norov
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