[Audit-test-developer] [PATCH v4 4/5] audit-test/filter: add aarch64 support

[AKASHI T. <tak...@li...>]

On arm64/aarch64, some system calls are implemented in glibc using other
primitive system calls, say open() vs. openat(). Therefore, audit logs
have only records for primitive ones.

This patch adds work-arounds for these cases.

Signed-off-by: AKASHI Takahiro <tak...@li...>
---
 audit-test/filter/tests/test_auid.bash             |    9 +++++--
 audit-test/filter/tests/test_class_attr.bash       |   28 +++++++++++++++-----
 audit-test/filter/tests/test_dev_inode.bash        |   11 +++++---
 audit-test/filter/tests/test_success.bash          |    8 ++++--
 audit-test/filter/tests/test_syscall.bash          |    8 ++++--
 audit-test/filter/tests/test_type.bash             |    9 +++++--
 audit-test/filter/tests/test_watch_dir_remove.bash |   20 ++++++++------
 audit-test/filter/tests/test_watch_open.bash       |   10 +++++--
 audit-test/filter/tests/test_watch_remove.bash     |    4 +++
 9 files changed, 79 insertions(+), 28 deletions(-)

diff --git a/audit-test/filter/tests/test_auid.bash b/audit-test/filter/tests/test_auid.bash
index c165cf3..211023a 100755
--- a/audit-test/filter/tests/test_auid.bash
+++ b/audit-test/filter/tests/test_auid.bash
@@ -33,8 +33,13 @@ do_open_file $tmp1
 augrok --seek=$log_mark "name==$tmp1" "auid==$user_auid" \
     && exit_error "Unexpected record found."
 
-auditctl -a exit,always -F arch=b$MODE -S open -F auid=$user_auid
-prepend_cleanup "auditctl -d exit,always -F arch=b$MODE -S open -F auid=$user_auid"
+if [[ ${MACHINE} = "aarch64" ]]; then
+    syscall_name="openat"
+else
+    syscall_name="open"
+fi
+auditctl -a exit,always -F arch=b$MODE -S $syscall_name -F auid=$user_auid
+prepend_cleanup "auditctl -d exit,always -F arch=b$MODE -S $syscall_name -F auid=$user_auid"
 
 # audit log marker
 log_mark=$(stat -c %s $audit_log)
diff --git a/audit-test/filter/tests/test_class_attr.bash b/audit-test/filter/tests/test_class_attr.bash
index 687b3d9..f2a2f8f 100755
--- a/audit-test/filter/tests/test_class_attr.bash
+++ b/audit-test/filter/tests/test_class_attr.bash
@@ -32,15 +32,29 @@ log_mark=$(stat -c %s $audit_log)
 
 # test
 do_chmod $watch 777
-do_chown $watch root
+if [[ ${MACHINE} = "aarch64" ]]; then
+    do_fchownat $(dirname $watch) $(basename $watch) root
+else
+    do_chown $watch root
+fi
 do_unlink $watch
 
 # verify audit record
-augrok --seek=$log_mark type==SYSCALL syscall==chmod name==$watch \
-    || exit_fail "Expected record for 'chmod' not found."
-augrok --seek=$log_mark type==SYSCALL syscall==chown name==$watch \
-    || exit_fail "Expected record for 'chown' not found."
-augrok --seek=$log_mark type==SYSCALL syscall==unlink name==$watch \
-    && exit_fail "Unexpected record for 'unlink' found."
+if [[ ${MACHINE} = "aarch64" ]]; then
+    augrok --seek=$log_mark type==SYSCALL syscall==fchmodat name==$watch \
+        || exit_fail "Expected record for 'chmod' not found."
+    augrok --seek=$log_mark type==SYSCALL syscall==fchownat
+           name==$(basename $watch) \
+        || exit_fail "Expected record for 'chown' not found."
+    augrok --seek=$log_mark type==SYSCALL syscall==unlinkat name==$watch \
+        && exit_fail "Unexpected record for 'unlink' found."
+else
+    augrok --seek=$log_mark type==SYSCALL syscall==chmod name==$watch \
+        || exit_fail "Expected record for 'chmod' not found."
+    augrok --seek=$log_mark type==SYSCALL syscall==chown name==$watch \
+        || exit_fail "Expected record for 'chown' not found."
+    augrok --seek=$log_mark type==SYSCALL syscall==unlink name==$watch \
+        && exit_fail "Unexpected record for 'unlink' found."
+fi
 
 exit_pass
diff --git a/audit-test/filter/tests/test_dev_inode.bash b/audit-test/filter/tests/test_dev_inode.bash
index 30ea580..33d83cf 100755
--- a/audit-test/filter/tests/test_dev_inode.bash
+++ b/audit-test/filter/tests/test_dev_inode.bash
@@ -34,11 +34,16 @@ minor=$((0x$minor))
 event_obj=$(get_event_obj $1)
 [[ $event_obj != $tmp1 ]] && prepend_cleanup "rm -f $event_obj"
 
-auditctl -a exit,always -F arch=b$MODE -S open -F key=$tmp1 \
-    -F inode=$inode -F devmajor=$major -F devminor=$minor
+if [[ ${MACHINE} = "aarch64" ]]; then
+    syscall_name="openat"
+else
+    syscall_name="open"
+fi
 
+auditctl -a exit,always -F arch=b$MODE -S $syscall_name -F key=$tmp1 \
+    -F inode=$inode -F devmajor=$major -F devminor=$minor
 prepend_cleanup "
-auditctl -d exit,always -F arch=b$MODE -S open -F key=$tmp1 \
+auditctl -d exit,always -F arch=b$MODE -S $syscall_name -F key=$tmp1 \
     -F inode=$inode -F devmajor=$major -F devminor=$minor"
 
 log_mark=$(stat -c %s $audit_log)
diff --git a/audit-test/filter/tests/test_success.bash b/audit-test/filter/tests/test_success.bash
index 497959b..b38683e 100755
--- a/audit-test/filter/tests/test_success.bash
+++ b/audit-test/filter/tests/test_success.bash
@@ -21,7 +21,11 @@
 source filter_functions.bash || exit 2
 
 # setup
-syscall_name="open"
+if [[ ${MACHINE} = "aarch64" ]]; then
+    syscall_name="openat"
+else
+    syscall_name="open"
+fi
 syscall_num=$(augrok --resolve $syscall_name) \
     || exit_error "unable to determine the syscall number for $syscall_name"
 
@@ -37,7 +41,7 @@ case $op in
         ;;
     *) exit_fail "unknown test operation" ;;
 esac
-filter_rule="exit,always -F arch=b$MODE -S open"
+filter_rule="exit,always -F arch=b$MODE -S $syscall_name"
 
 auditctl -a $filter_rule $filter_field
 prepend_cleanup "auditctl -d $filter_rule $filter_field"
diff --git a/audit-test/filter/tests/test_syscall.bash b/audit-test/filter/tests/test_syscall.bash
index 8159b92..3f26cec 100755
--- a/audit-test/filter/tests/test_syscall.bash
+++ b/audit-test/filter/tests/test_syscall.bash
@@ -21,13 +21,17 @@
 source filter_functions.bash || exit 2
 
 # setup
-syscall_name="open"
+if [[ ${MACHINE} = "aarch64" ]]; then
+    syscall_name="openat"
+else
+    syscall_name="open"
+fi
 syscall_num=$(augrok --resolve $syscall_name) \
     || exit_error "unable to determine the syscall number for $syscall_name"
 
 op=$1
 case $op in
-    name)   filter_rule="exit,always -F arch=b$MODE -S open" ;;
+    name)   filter_rule="exit,always -F arch=b$MODE -S $syscall_name" ;;
     number) filter_rule="exit,always -S $syscall_num";;
     *) exit_fail "unknown test operation" ;;
 esac
diff --git a/audit-test/filter/tests/test_type.bash b/audit-test/filter/tests/test_type.bash
index 16c63f4..aa797a0 100755
--- a/audit-test/filter/tests/test_type.bash
+++ b/audit-test/filter/tests/test_type.bash
@@ -27,10 +27,15 @@ source filter_functions.bash || exit 2
 
 # setup
 user_auid=$(cat /proc/self/loginuid)
+if [[ ${MACHINE} = "aarch64" ]]; then
+    syscall_name="openat"
+else
+    syscall_name="open"
+fi
 
 # setup auditctl
-auditctl -a exit,always -F arch=b$MODE -S open -F auid=$user_auid
-prepend_cleanup "auditctl -d exit,always -F arch=b$MODE -S open -F auid=$user_auid"
+auditctl -a exit,always -F arch=b$MODE -S $syscall_name -F auid=$user_auid
+prepend_cleanup "auditctl -d exit,always -F arch=b$MODE -S $syscall_name -F auid=$user_auid"
 
 # audit log marker
 log_mark=$(stat -c %s $audit_log)
diff --git a/audit-test/filter/tests/test_watch_dir_remove.bash b/audit-test/filter/tests/test_watch_dir_remove.bash
index bbdd9fb..23b79ab 100755
--- a/audit-test/filter/tests/test_watch_dir_remove.bash
+++ b/audit-test/filter/tests/test_watch_dir_remove.bash
@@ -28,24 +28,28 @@ tmpd=$(mktemp -d) || exit_fail "create tempdir failed"
 watch="$tmpd"
 name="$tmpd/foo"
 
-auditctl -a exit,always -F arch=b$MODE -S $op -F path=$watch
-auditctl -a exit,always -F arch=b$MODE -S $opat -F path=$watch
-
-prepend_cleanup "
-    auditctl -d exit,always -F arch=b$MODE -S $op -F path=$watch
-    auditctl -d exit,always -F arch=b$MODE -S $opat -F path=$watch
-    rm -rf $tmpd"
-
 case $op in
     rename) touch $name
             gen_audit_event="mv $tmp1 $name" ;;
     rmdir)  mkdir $name
+            if [[ ${MACHINE} = "aarch64" ]]; then
+                op="unlink";
+                opat="unlinkat";
+            fi
             gen_audit_event="rmdir $name" ;;
     unlink) touch $name
             gen_audit_event="rm $name" ;;
     *) exit_fail "unknown test operation: $op" ;;
 esac
 
+auditctl -a exit,always -F arch=b$MODE -S $op -F path=$watch
+auditctl -a exit,always -F arch=b$MODE -S $opat -F path=$watch
+
+prepend_cleanup "
+    auditctl -d exit,always -F arch=b$MODE -S $op -F path=$watch
+    auditctl -d exit,always -F arch=b$MODE -S $opat -F path=$watch
+    rm -rf $tmpd"
+
 log_mark=$(stat -c %s $audit_log)
 
 # test
diff --git a/audit-test/filter/tests/test_watch_open.bash b/audit-test/filter/tests/test_watch_open.bash
index 525ac31..c7fe367 100755
--- a/audit-test/filter/tests/test_watch_open.bash
+++ b/audit-test/filter/tests/test_watch_open.bash
@@ -29,8 +29,14 @@ watch=$tmp1
 event_obj=$(get_event_obj $1)
 [[ $event_obj != $watch ]] && prepend_cleanup "rm -f $event_obj"
 
-auditctl -a exit,always -F arch=b$MODE -S open -F key=$watch -F path=$watch
-prepend_cleanup "auditctl -d exit,always -F arch=b$MODE -S openat -F key=$watch -F path=$watch"
+if [[ ${MACHINE} = "aarch64" ]]; then
+    syscall_name="openat"
+else
+    syscall_name="open"
+fi
+
+auditctl -a exit,always -F arch=b$MODE -S $syscall_name -F key=$watch -F path=$watch
+prepend_cleanup "auditctl -d exit,always -F arch=b$MODE -S $syscall_name -F key=$watch -F path=$watch"
 
 # test open with O_CREAT|O_RDONLY; verify audit record
 log_mark=$(stat -c %s $audit_log)
diff --git a/audit-test/filter/tests/test_watch_remove.bash b/audit-test/filter/tests/test_watch_remove.bash
index 2e00a50..3d370a7 100755
--- a/audit-test/filter/tests/test_watch_remove.bash
+++ b/audit-test/filter/tests/test_watch_remove.bash
@@ -30,6 +30,10 @@ case $op in
     unlink) touch $name
             gen_audit_event="rm $name" ;;
     rmdir)  mkdir $name
+            if [[ ${MACHINE} = "aarch64" ]]; then
+                op="unlink";
+                opat="unlinkat";
+            fi
             gen_audit_event="rmdir $name" ;;
     rename) touch $name
             gen_audit_event="mv $tmp1 $name" ;;
-- 
1.7.9.5