[PATCH v7 09/22] hexagon: define remaining syscall_get_* functions

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 3 syscall_get_* functions as documented in asm-generic/syscall.h: syscall_get_error, syscall_get_return_value, and syscall_get_arch. Acked-by: Paul Moore <paul(a)paul-moore.com&gt; # audit related parts Cc: Richard Kuo <rkuo(a)codeaurora.org&gt; Cc: Eric Paris <eparis(a)redhat.com&gt; Cc: Oleg Nesterov <oleg(a)redhat.com&gt; Cc: Andy Lutomirski <luto(a)kernel.org&gt; Cc: Elvira Khabirova <lineprinter(a)altlinux.org&gt; Cc: Eugene Syromyatnikov <esyr(a)redhat.com&gt; Cc: linux-hexagon(a)vger.kernel.org Cc: linux-audit(a)redhat.com Signed-off-by: Dmitry V. Levin <ldv(a)altlinux.org&gt; --- Notes: v7: added Acked-by v6: added missing includes v5: added syscall_get_error and syscall_get_return_value arch/hexagon/include/asm/syscall.h | 22 ++++++++++++++++++++++ include/uapi/linux/audit.h | 1 + 2 files changed, 23 insertions(+) diff --git a/arch/hexagon/include/asm/syscall.h b/arch/hexagon/include/asm/syscall.h index 4af9c7b6f13a..c3290c0bc458 100644 --- a/arch/hexagon/include/asm/syscall.h +++ b/arch/hexagon/include/asm/syscall.h @@ -21,6 +21,10 @@ #ifndef _ASM_HEXAGON_SYSCALL_H #define _ASM_HEXAGON_SYSCALL_H +#include <linux/err.h> +#include <asm/ptrace.h> +#include <uapi/linux/audit.h> + typedef long (*syscall_fn)(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); @@ -43,4 +47,22 @@ static inline void syscall_get_arguments(struct task_struct *task, BUG_ON(i + n > 6); memcpy(args, &(&regs->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(void) +{ + return AUDIT_ARCH_HEXAGON; +} + #endif diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h index c6a6e3a9ec9a..b1602dcc13bc 100644 --- a/include/uapi/linux/audit.h +++ b/include/uapi/linux/audit.h @@ -387,6 +387,7 @@ enum { #define AUDIT_ARCH_CSKY (EM_CSKY|__AUDIT_ARCH_LE) #define AUDIT_ARCH_FRV (EM_FRV) #define AUDIT_ARCH_H8300 (EM_H8_300) +#define AUDIT_ARCH_HEXAGON (EM_HEXAGON) #define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE) #define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) #define AUDIT_ARCH_M32R (EM_M32R) -- ldv