From 10acecc0583b7301cb539ba6875618956fa3d13b Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Fri, 5 Feb 2021 09:05:54 +0100
Subject: [PATCH] src/privsep-linux.c: add support for sh (#25)

Fix the following build failure:

privsep-linux.c:206:4: error: #error "Platform does not support seccomp filter yet"
 #  error "Platform does not support seccomp filter yet"
    ^~~~~
In file included from privsep-linux.c:36:
privsep-linux.c:213:38: error: 'SECCOMP_AUDIT_ARCH' undeclared here (not in a function); did you mean 'SECCOMP_ALLOW_ARG'?
  BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, SECCOMP_AUDIT_ARCH, 1, 0),
                                      ^~~~~~~~~~~~~~~~~~

It should be noted that AUDIT_ARCH_{SH,SHEL,SH64,SHEL64} are defined at
least since kernel 3.7 and
https://github.com/torvalds/linux/commit/607ca46e97a1b6594b29647d98a32d545c24bdff

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
(cherry picked from commit 166491c2953546a677073694036f43a65fc25063)
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
---
 src/privsep-linux.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/privsep-linux.c b/src/privsep-linux.c
index a861a836..428ea4b0 100644
--- a/src/privsep-linux.c
+++ b/src/privsep-linux.c
@@ -206,6 +206,20 @@ ps_root_sendnetlink(struct dhcpcd_ctx *ctx, int protocol, struct msghdr *msg)
 #  define SECCOMP_AUDIT_ARCH AUDIT_ARCH_S390X
 #elif defined(__s390__)
 #  define SECCOMP_AUDIT_ARCH AUDIT_ARCH_S390
+#elif defined(__sh__)
+#  if defined(__LP64__)
+#    if (BYTE_ORDER == LITTLE_ENDIAN)
+#      define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SHEL64
+#    else
+#      define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SH64
+#    endif
+#  else
+#    if (BYTE_ORDER == LITTLE_ENDIAN)
+#      define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SHEL
+#    else
+#      define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SH
+#    endif
+#  endif
 #elif defined(__sparc__)
 #  if defined(__arch64__)
 #    define AUDIT_ARCH_SPARC64
-- 
2.29.2