From ba849160a0fa634eaad34183632f84ac82506f14 Mon Sep 17 00:00:00 2001 From: "Dmitry V. Levin" Date: Tue, 16 Jul 2019 16:29:32 -0700 Subject: mips: define syscall_get_error() syscall_get_error() is required to be implemented on all architectures in addition to already implemented syscall_get_nr(), syscall_get_arguments(), syscall_get_return_value(), and syscall_get_arch() functions in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. Link: http://lkml.kernel.org/r/20190510152803.GC28558@altlinux.org Signed-off-by: Dmitry V. Levin Acked-by: Paul Burton Cc: Elvira Khabirova Cc: Eugene Syromyatnikov Cc: Ralf Baechle Cc: James Hogan Cc: Oleg Nesterov Cc: Andy Lutomirski Cc: Benjamin Herrenschmidt Cc: Greentime Hu Cc: Helge Deller [parisc] Cc: James E.J. Bottomley Cc: kbuild test robot Cc: Kees Cook Cc: Michael Ellerman Cc: Paul Mackerras Cc: Richard Kuo Cc: Shuah Khan Cc: Vincent Chen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/mips/include/asm/syscall.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch') diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index acf80ae0a430..83bb439597d8 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -89,6 +89,12 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg, unreachable(); } +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->regs[7] ? -regs->regs[2] : 0; +} + static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { -- cgit v1.2.3-59-g8ed1b