mirror of
https://github.com/ioacademy-jikim/debugging
synced 2025-06-09 00:46:12 +00:00
37 lines
727 B
C
37 lines
727 B
C
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include "tests/sys_mman.h"
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
/* Test case supplied by Vasile Floroiu. */
|
|
|
|
#define DO(cmd) printf(#cmd "; status: %s\n", strerror(errno))
|
|
#define SZ 48216 + 1024
|
|
|
|
int main()
|
|
{
|
|
int fd;
|
|
|
|
fd = shm_open("/hw_mngr.c", (O_CREAT | O_EXCL | O_RDWR),
|
|
(S_IREAD | S_IWRITE));
|
|
DO(shm_open());
|
|
{
|
|
void *ptr;
|
|
ftruncate(fd, SZ);
|
|
DO(ftruncate(fd, SZ));
|
|
|
|
ptr = mmap(0, SZ, (PROT_READ | PROT_WRITE), MAP_SHARED, fd, 0);
|
|
DO(mmap());
|
|
|
|
munmap(ptr, SZ);
|
|
DO(munmap());
|
|
}
|
|
shm_unlink("/hw_mngr.c");
|
|
DO(shm_unlink());
|
|
return 0;
|
|
}
|