32 lines
641 B
C
32 lines
641 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/shm.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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int main()
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{
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const int SIZE = 4096;
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const char *name = "OS";
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const char *message_0 = "Hello";
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const char *message_1 = "World!";
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int shm_fd;
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void *ptr;
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shm_fd = shm_open(name, O_CREAT | O_RDWR, 0666);
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ftruncate(shm_fd, SIZE);
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ptr = mmap(0, SIZE, PROT_WRITE, MAP_SHARED, shm_fd, 0);
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sprintf(ptr, "%s", message_0);
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ptr += strlen(message_0);
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sprintf(ptr, "%s", " ");
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ptr += 1;
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sprintf(ptr, "%s", message_1);
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ptr += strlen(message_1);
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return 0;
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}
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