1 files changed, 99 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/tst-syscall-list.sh b/sysdeps/unix/sysv/linux/tst-syscall-list.sh
new file mode 100644
index 0000000000..d97662e810
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-syscall-list.sh
@@ -0,0 +1,99 @@
+#!/bin/bash
+# Consistency checks for the system call list
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+export LC_ALL=C
+set -e
+set -o pipefail
+
+if test $# != 4; then
+    echo "error: wrong number of arguments: $#"
+    exit 1
+fi
+
+macros="$1"
+list_nr="$2"
+list_sys="$3"
+GAWK="$4"
+
+linux_version="$("$GAWK" \
+  '/#define LINUX_VERSION_CODE / {print $3}' < "$macros")"
+glibc_linux_version="$("$GAWK" \
+  '/#define __GLIBC_LINUX_VERSION_CODE / {print $3}' < "$macros")"
+
+echo "info: LINUX_VERSION_CODE: $linux_version"
+echo "info: __GLIBC_LINUX_VERSION_CODE: $glibc_linux_version"
+# Ignore the subrelease in the comparison.
+if test $(expr "$glibc_linux_version" / 256) \
+        -lt $(expr "$linux_version" / 256); then
+    echo "info: The kernel major/minor version is newer than the glibc version"
+    kernel_newer=true
+else
+    kernel_newer=false
+fi
+echo
+
+errors=0
+
+# Use getpid as a system call which is expected to be always defined.
+# alpha uses getxpid instead, so it is permitted as an alternative.
+if ! grep -E -q '^getx?pid$' -- "$list_nr"; then
+    echo "error: __NR_getpid not defined"
+    errors=1
+fi
+if ! grep -E -q '^getx?pid$' -- "$list_sys"; then
+    echo "error: SYS_getpid not defined"
+    errors=1
+fi
+
+comm_1="$(mktemp)"
+comm_2="$(mktemp)"
+comm_result="$(mktemp)"
+cleanup () {
+    rm -f -- "$comm_1" "$comm_2" "$comm_result"
+}
+trap cleanup 0
+
+sort -o "$comm_1" -- "$list_nr"
+sort -o "$comm_2" -- "$list_sys"
+
+# Check for missing SYS_* macros.
+comm --check-order -2 -3 -- "$comm_1" "$comm_2" > "$comm_result"
+if test -s "$comm_result"; then
+    echo "error: These system calls need to be added to syscall-names.list:"
+    cat -- "$comm_result"
+    # This is only an error if our version is older than the kernel
+    # version because we cannot predict future kernel development.
+    if $kernel_newer; then
+        echo
+        echo "warning: This error has been ignored because the glibc"
+        echo "warning: system call list is older than the kernel version."
+    else
+        errors=1
+    fi
+fi
+
+# Check for additional SYS_* macros.
+comm --check-order -1 -3 -- "$comm_1" "$comm_2" > "$comm_result"
+if test -s "$comm_result"; then
+    echo "error: The following system calls have unexpected SYS_* macros:"
+    cat -- "$comm_result"
+    errors=1
+fi
+
+exit "$errors"