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24 lines
477 B
C
24 lines
477 B
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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int main()
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{
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int shmid = shmget(IPC_PRIVATE, 100 * 4096,
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IPC_CREAT | IPC_EXCL | S_IRUSR | S_IWUSR);
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assert(shmid != -1);
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void *addr = shmat(shmid, NULL, 0);
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assert(addr != (void *)-1);
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addr = mremap(addr, 100 * 4096, 40 * 4096, 0);
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assert(addr != (void *)-1);
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return 0;
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}
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