Wildan M
35 lines
846 B
C
35 lines
846 B
C
#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <string.h>
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#include "test_helpers.h"
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int main(void)
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{
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int status;
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key_t key = ftok("example_dir/1-never-gonna-give-you-up", 123);
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size_t size = 1000;
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int shmid = shmget(key, size, IPC_CREAT | IPC_EXCL | 0666);
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ERROR_IF(shmget, shmid, == -1);
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struct shmid_ds ds;
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status = shmctl(shmid, IPC_STAT, &ds);
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ERROR_IF(shmctl, status, == -1);
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UNEXP_IF(shmctl, ds.shm_segsz, != size);
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void *shmaddr = shmat(shmid, NULL, 0);
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UNEXP_IF(shmat, shmaddr, == SHM_FAILED);
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char *msg = "foo bar";
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strcpy((char *)shmaddr, msg);
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status = strcmp((char *)shmaddr, msg);
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UNEXP_IF(strcmp, status, != 0);
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status = shmdt(shmaddr);
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ERROR_IF(shmdt, status, == -1);
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status = shmctl(shmid, IPC_RMID, NULL);
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ERROR_IF(shmctl, status, == -1);
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} |