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#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
int main() {
char msg[] = "hello world";
int shmd = shm_open("/shmemory", O_RDWR | O_CREAT | O_TRUNC, 0755);
ftruncate(shmd, strlen(msg));
char* mem = mmap(NULL, strlen(msg) + 1, PROT_READ | PROT_WRITE, MAP_SHARED, shmd, 0);
strncpy(mem, msg, strlen(msg) + 1);
char buf[1024];
strncpy(buf, mem, strlen(msg) + 1);
write(1, buf, strlen(buf) + 1);
close(shmd);
shm_unlink("/shmemory");
return 0;
}
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