Elaborato_SO/src/custom_shm.c

#include <sys/shm.h>
#include <sys/stat.h>
#include <custom_shm.h>
#include <structures.h>
#include <errExit.h>

int getShmid() {
    int shmid = shmget(ftok(KEYFILE, 'z'), SHM_SIZE, IPC_CREAT | S_IRUSR | S_IWUSR);
    if (result == -1) {
        errExit("shmget", "getShmid");
    }

    
    return shmid;
}