Skip newlines for SELinux logs
libselinux log messages usually end with a new line character. Android
log system does not require the new line character and will include the
character as-is in the log buffer.
This trimming was already implemented when the message is typed as
SELINUX_AVC (see SelinuxAvcLog). Move the truncation one level up so it
is occurring for all types of logs.
Test: boot & adb logcat & inspect SELinux logs
Change-Id: I360359c1b178ef24d555dd41f8d4a18b293a175c
diff --git a/init/selinux.cpp b/init/selinux.cpp
index 062ed39..907eb80 100644
--- a/init/selinux.cpp
+++ b/init/selinux.cpp
@@ -761,15 +761,7 @@
constexpr size_t kKlogMessageSize = 1024;
-void SelinuxAvcLog(char* buf, size_t buf_len) {
- CHECK_GT(buf_len, 0u);
-
- size_t str_len = strnlen(buf, buf_len);
- // trim newline at end of string
- if (buf[str_len - 1] == '\n') {
- buf[str_len - 1] = '\0';
- }
-
+void SelinuxAvcLog(char* buf) {
struct NetlinkMessage {
nlmsghdr hdr;
char buf[kKlogMessageSize];
@@ -835,8 +827,17 @@
if (length_written <= 0) {
return 0;
}
+
+ // libselinux log messages usually contain a new line character, while
+ // Android LOG() does not expect it. Remove it to avoid empty lines in
+ // the log buffers.
+ size_t str_len = strlen(buf);
+ if (buf[str_len - 1] == '\n') {
+ buf[str_len - 1] = '\0';
+ }
+
if (type == SELINUX_AVC) {
- SelinuxAvcLog(buf, sizeof(buf));
+ SelinuxAvcLog(buf);
} else {
android::base::KernelLogger(android::base::MAIN, severity, "selinux", nullptr, 0, buf);
}