Messages in this thread Patch in this message | | | Date | Fri, 22 Mar 2019 07:15:39 +0300 | From | "Dmitry V. Levin" <> | Subject | [PATCH linux-next v8 2/7] hexagon: define syscall_get_error() and syscall_get_return_value() |
| |
syscall_get_* functions are required to be implemented on all architectures in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request.
This adds remaining 2 syscall_get_* functions as documented in asm-generic/syscall.h: syscall_get_error and syscall_get_return_value.
Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Elvira Khabirova <lineprinter@altlinux.org> Cc: Eugene Syromyatnikov <esyr@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: linux-hexagon@vger.kernel.org Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> ---
Notes: v8: moved syscall_get_arch to separate audit patchset v7: unchanged v6: added missing includes v5: added syscall_get_error and syscall_get_return_value v4: unchanged v3: unchanged v2: unchanged
arch/hexagon/include/asm/syscall.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/arch/hexagon/include/asm/syscall.h b/arch/hexagon/include/asm/syscall.h index 47b0bc3f16be..b6a02ea3ea7f 100644 --- a/arch/hexagon/include/asm/syscall.h +++ b/arch/hexagon/include/asm/syscall.h @@ -22,6 +22,8 @@ #define _ASM_HEXAGON_SYSCALL_H #include <uapi/linux/audit.h> +#include <linux/err.h> +#include <asm/ptrace.h> typedef long (*syscall_fn)(unsigned long, unsigned long, unsigned long, unsigned long, @@ -46,6 +48,18 @@ static inline void syscall_get_arguments(struct task_struct *task, memcpy(args, &(®s->r00)[i], n * sizeof(args[0])); } +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return IS_ERR_VALUE(regs->r00) ? regs->r00 : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->r00; +} + static inline int syscall_get_arch(struct task_struct *task) { return AUDIT_ARCH_HEXAGON; -- ldv
| |