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arc: define syscall_get_arch()

PATCH Applied Dmitry V. Levin 2 participants 2 messages Mar 17, 2019 – Mar 21, 2019

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Synopsys ARC architecture Audit
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Dmitry V. Levin

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#0 lore raw

PATCH v2 2/13 arc: 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.

Acked-by Vineet Gupta <[email protected]>
Acked-by Paul Moore <[email protected]>
Cc Elvira Khabirova <[email protected]>
Cc Eugene Syromyatnikov <[email protected]>
Cc Alexey Brodkin <[email protected]>
Cc Oleg Nesterov <[email protected]>
Cc Andy Lutomirski <[email protected]>
Cc [email protected]
Cc [email protected]
Signed-off-by Dmitry V. Levin <[email protected]>

---

Notes:
v2: unchanged

 arch/arc/include/asm/syscall.h | 11 +++++++++++
 include/uapi/linux/audit.h     |  4 ++++
 2 files changed, 15 insertions(+)
arch/arc/include/asm/syscall.h +11 -0
index 29de09804306..c7fc4c0c3bcb 100644
@@ -9,6 +9,7 @@
 #ifndef _ASM_ARC_SYSCALL_H
 #define _ASM_ARC_SYSCALL_H  1
 
+#include <uapi/linux/audit.h>
 #include <linux/err.h>
 #include <linux/sched.h>
 #include <asm/unistd.h>

@@ -68,4 +69,14 @@ syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
 	}
 }
 
+static inline int
+syscall_get_arch(void)
+{
+	return IS_ENABLED(CONFIG_ISA_ARCOMPACT)
+		? (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
+			? AUDIT_ARCH_ARCOMPACTBE : AUDIT_ARCH_ARCOMPACT)
+		: (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
+			? AUDIT_ARCH_ARCV2BE : AUDIT_ARCH_ARCV2);
+}
+
 #endif
include/uapi/linux/audit.h +4 -0
index f28acd952d03..1626727bb921 100644
@@ -375,6 +375,10 @@ enum {
 
 #define AUDIT_ARCH_AARCH64	(EM_AARCH64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_ALPHA	(EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_ARCOMPACT	(EM_ARCOMPACT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_ARCOMPACTBE	(EM_ARCOMPACT)
+#define AUDIT_ARCH_ARCV2	(EM_ARCV2|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_ARCV2BE	(EM_ARCV2)
 #define AUDIT_ARCH_ARM		(EM_ARM|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_ARMEB	(EM_ARM)
 #define AUDIT_ARCH_CRIS		(EM_CRIS|__AUDIT_ARCH_LE)
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ldv
maintainer Applied
#1 lore raw
Quoted 17 lines · Dmitry V. Levin

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.

Acked-by Vineet Gupta <[email protected]>
Acked-by Paul Moore <[email protected]>
Cc Elvira Khabirova <[email protected]>
Cc Eugene Syromyatnikov <[email protected]>
Cc Alexey Brodkin <[email protected]>
Cc Oleg Nesterov <[email protected]>
Cc Andy Lutomirski <[email protected]>
Cc [email protected]
Cc [email protected]
Signed-off-by Dmitry V. Levin <[email protected]>
Quoted 8 lines

---

Notes:
v2: unchanged

 arch/arc/include/asm/syscall.h | 11 +++++++++++
 include/uapi/linux/audit.h     |  4 ++++
 2 files changed, 15 insertions(+)

Merged into audit/next, thanks everyone.

Signature · 2 lines
paul moore
www.paul-moore.com