fix

src/custom_sem.c

@@ -9,4 +9,21 @@ void semOp(int semid, short sem_num, short sem_op) {
     if (semop(semid, &sop, 1) == -1) {
         errExit("semop", "semOp");
     }
+}
+
+int getSemid(){
+    int semid = semget(IPC_PRIVATE, 2, S_IRUSR | S_IWUSR);
+    if (semid == -1) {
+        errExit("semget", "getSemid");
+    }
+
+    int val[] = {0, 0};
+    union semun arg;
+    arg.array = val;
+
+    if (semctl(semid, 0 , SETALL, arg) == -1) {
+        errExit("semctl", "getSemid");
+    }
+
+    return semid;
 }

src/custom_shm.c

@@ -3,6 +3,7 @@
 #include <sys/stat.h>
 #include <custom_shm.h>
 #include <structures.h>
+
 #include <errExit.h>
 
 int getShmid(int row, int col) {

src/server.c

@@ -39,21 +39,4 @@ input_server_t check_input(int argc, char *argv[]){
     }
 
     return input;
-}
-
-int getSemid(){
-    int semid = semget(IPC_PRIVATE, 4, S_IRUSR | S_IWUSR);
-    if (semid == -1) {
-        errExit("semget", "getSemid");
-    }
-
-    int val[] = {0, 0, 0, 0};
-    union semun arg;
-    arg.array = val;
-
-    if (semctl(semid, 0 , SETALL, arg) == -1) {
-        errExit("semctl", "getSemid");
-    }
-
-    return semid;
 }