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From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Subject: [PATCH 3/7] seccomp.sh: Handle syscall number defines in the (x + y) form
Date: Sat, 26 Feb 2022 23:56:42 +0100	[thread overview]
Message-ID: <20220226225646.1905417-4-sbrivio@redhat.com> (raw)
In-Reply-To: <20220226225646.1905417-1-sbrivio@redhat.com>

[-- Attachment #1: Type: text/plain, Size: 679 bytes --]

This is the case at least for current glibc headers on armv6l and
armv7l.

Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
---
 seccomp.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/seccomp.sh b/seccomp.sh
index f5ee98e..6ac59a1 100755
--- a/seccomp.sh
+++ b/seccomp.sh
@@ -109,6 +109,9 @@ syscall_nr() {
 	__in="$(printf "#include <asm-generic/unistd.h>\n#include <sys/syscall.h>\n__NR_%s" ${1})"
 	__out="$(echo "${__in}" | cc -E -xc - -o - | tail -1)"
 	[ "${__out}" = "__NR_$1" ] && return 1
+
+	# Output might be in the form "(x + y)" (seen on armv6l, armv7l)
+	__out="$(eval echo $((${__out})))"
 	echo "${__out}"
 }
 
-- 
@@ -109,6 +109,9 @@ syscall_nr() {
 	__in="$(printf "#include <asm-generic/unistd.h>\n#include <sys/syscall.h>\n__NR_%s" ${1})"
 	__out="$(echo "${__in}" | cc -E -xc - -o - | tail -1)"
 	[ "${__out}" = "__NR_$1" ] && return 1
+
+	# Output might be in the form "(x + y)" (seen on armv6l, armv7l)
+	__out="$(eval echo $((${__out})))"
 	echo "${__out}"
 }
 
-- 
2.34.1


  parent reply	other threads:[~2022-02-26 22:56 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-26 22:56 [PATCH 0/7] Fixes for armv6l, armv7l, and warnings on some gcc flags Stefano Brivio
2022-02-26 22:56 ` [PATCH 1/7] passt: Explicitly check return value of chdir() Stefano Brivio
2022-02-26 22:56 ` [PATCH 2/7] udp: Explicitly initialise sin6_scope_id and sin_zero in sockaddr_in{,6} Stefano Brivio
2022-02-26 22:56 ` Stefano Brivio [this message]
2022-02-26 22:56 ` [PATCH 4/7] tap: Cast ETH_MAX_MTU to signed in comparisons Stefano Brivio
2022-02-26 22:56 ` [PATCH 5/7] Makefile: Fix up AUDIT_ARCH for armv6l, armv7l Stefano Brivio
2022-02-26 22:56 ` [PATCH 6/7] passt: Don't warn on failed madvise() Stefano Brivio
2022-02-26 22:56 ` [PATCH 7/7] seccomp: Adjust list of allowed syscalls for armv6l, armv7l Stefano Brivio

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