src/util/smack-check.c

   1 #include <sys/types.h>
   2 #include <sys/stat.h>
   3 #include <fcntl.h>
   4 #include <unistd.h>
   5
   6 #include <security-server-common.h>
   7 #include <smack-check.h>
   8
   9 int smack_runtime_check(void)
  10 {
  11     static int smack_present = -1;
  12     if (-1 == smack_present) {
  13         int fd = open("/smack/load2", O_WRONLY);
  14         if (-1 == fd) {
  15             SEC_SVR_DBG("%s","security-server: no smack found on device");
  16             smack_present = 0;
  17         } else {
  18             SEC_SVR_DBG("%s","security-server: found smack on device");
  19             close(fd);
  20             smack_present = 1;
  21         }
  22     }
  23     return smack_present;
  24 }
  25
  26 int smack_check(void)
  27 {
  28 #ifndef SMACK_ENABLED
  29     return 0;
  30 #else
  31     return smack_runtime_check();
  32 #endif
  33
  34 }