Change implementation of have_smack()

[Issue#]       N/A
[Feature]      More reliable checking whether Smack is available in runtime.
[Cause]        Code reuse.
[Solution]     Use function provided in libsmack to check usability of smackfs.
[Verification] Run tests from security-tests.

Change-Id: Ib237a0a6ddbcdd966daac35bc8c416338c501af2

diff --git a/src/privilege-control.c b/src/privilege-control.c
index 0752c33..a525187 100644 (file)
--- a/src/privilege-control.c
+++ b/src/privilege-control.c
@@ -211,13 +211,11 @@ static inline int have_smack(void)
        static int have_smack = -1;
 
        if (-1 == have_smack) {
-               int fd = open("/smack/load2", O_WRONLY);
-               if (-1 == fd) {
+               if (NULL == smack_smackfs_path()) {
                        C_LOGD("Libprivilage-control: no smack found on phone");
                        have_smack = 0;
                } else {
                        C_LOGD("Libprivilege-control: found smack on phone");
-                       close(fd);
                        have_smack = 1;
                }
        }