[PATCH v5 17/25] riscv: define syscall_get_arch()

syscall_get_arch() is required to be implemented on all architectures in addition to already implemented syscall_get_nr(), syscall_get_arguments(), syscall_get_error(), and syscall_get_return_value() functions in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. Based-on-patch-by: David Abdurachmanov <david.abdurachmanov(a)gmail.com&gt; Reviewed-by: Palmer Dabbelt <palmer(a)sifive.com&gt; Cc: Elvira Khabirova <lineprinter(a)altlinux.org&gt; Cc: Eugene Syromyatnikov <esyr(a)redhat.com&gt; Cc: Oleg Nesterov <oleg(a)redhat.com&gt; Cc: Andy Lutomirski <luto(a)kernel.org&gt; Cc: Albert Ou <aou(a)eecs.berkeley.edu&gt; Cc: Paul Moore <paul(a)paul-moore.com&gt; Cc: Eric Paris <eparis(a)redhat.com&gt; Cc: linux-riscv(a)lists.infradead.org Cc: linux-audit(a)redhat.com Signed-off-by: Dmitry V. Levin <ldv(a)altlinux.org&gt; --- Notes: v5: added Cc v2: added Reviewed-by arch/riscv/include/asm/syscall.h | 10 ++++++++++ include/uapi/linux/audit.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/arch/riscv/include/asm/syscall.h b/arch/riscv/include/asm/syscall.h index 8d25f8904c00..bba3da6ef157 100644 --- a/arch/riscv/include/asm/syscall.h +++ b/arch/riscv/include/asm/syscall.h @@ -18,6 +18,7 @@ #ifndef _ASM_RISCV_SYSCALL_H #define _ASM_RISCV_SYSCALL_H +#include <uapi/linux/audit.h> #include <linux/sched.h> #include <linux/err.h> @@ -99,4 +100,13 @@ static inline void syscall_set_arguments(struct task_struct *task, memcpy(&regs->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0)); } +static inline int syscall_get_arch(void) +{ +#ifdef CONFIG_64BIT + return AUDIT_ARCH_RISCV64; +#else + return AUDIT_ARCH_RISCV32; +#endif +} + #endif /* _ASM_RISCV_SYSCALL_H */ diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h index 883c5f56be9c..1e9808f3a240 100644 --- a/include/uapi/linux/audit.h +++ b/include/uapi/linux/audit.h @@ -411,6 +411,8 @@ enum { /* do not define AUDIT_ARCH_PPCLE since it is not supported by audit */ #define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT) #define AUDIT_ARCH_PPC64LE (EM_PPC64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) +#define AUDIT_ARCH_RISCV32 (EM_RISCV|__AUDIT_ARCH_LE) +#define AUDIT_ARCH_RISCV64 (EM_RISCV|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) #define AUDIT_ARCH_S390 (EM_S390) #define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT) #define AUDIT_ARCH_SH (EM_SH) -- ldv