1*c9945492SAndroid Build Coastguard Worker #include <sys/ipc.h> 2*c9945492SAndroid Build Coastguard Worker #include <sys/stat.h> 3*c9945492SAndroid Build Coastguard Worker ftok(const char * path,int id)4*c9945492SAndroid Build Coastguard Workerkey_t ftok(const char *path, int id) 5*c9945492SAndroid Build Coastguard Worker { 6*c9945492SAndroid Build Coastguard Worker struct stat st; 7*c9945492SAndroid Build Coastguard Worker if (stat(path, &st) < 0) return -1; 8*c9945492SAndroid Build Coastguard Worker 9*c9945492SAndroid Build Coastguard Worker return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24)); 10*c9945492SAndroid Build Coastguard Worker } 11