Otherwise, −1 is returned and errno is set to indicate the error. Errors The shmget() function will fail if: EACCES A shared memory identifier exists for key but operation permission (see Intro(2)) as specified by the low-order 9 bits of shmflg would not be granted. EEXIST A shared...
(13) 14 shmget02.c:81: TFAIL: shmget(1644188789, 2048, 2560) expected EPERM: ENOENT (2) 15 shmget02.c:69: TFAIL: shmget(1644188789, 2048, 2560) expected ENOMEM: ENOENT (2) 16 17 Summary: 18 passed 6 19 failed 2 20 broken 0 21 skipped 0 22 warnings 0 23 <<<execution_status>...
perror("fail to ftok"); exit(EXIT_FAILURE); } if((key2 = ftok(".",'b')) < 0) { perror("fail to ftok"); exit(EXIT_FAILURE); } printf("key1 = %d\n",key1); printf("key2 = %d\n",key2); return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. ...
Causes the shmget() function to fail if the key specified has an associated ID. IPC_EXCL is ignored when IPC_CREAT is not specified or IPC_PRIVATE is specified. __IPC_GIGA Requests a shared memory segment with a size in gigabyte multiples. Use of this option requires that the size parame...
Otherwise, -1 is returned and errno is set to indicate the error. ERRORS The shmget() function will fail if: EACCES A shared memory identifier exists for the union of key and sensitivity label, but operation permission (see intro(3) ) as specified by the low-order 9 bits of shmflg ...
When a shared memory segment associated with argumentkeyalready exists, settingIPC_EXCLandIPC_CREATin argumentshmflgwill force shmget() to fail. The following fields are initialized when ashmid_dsdata structure is created: The fieldsshm_perm.cuidandshm_perm.uidare set equal to the effective user ...
Otherwise, -1 is returned and errno is set to indicate the error. ERRORS The shmget() function will fail if: EACCES A semaphore-structure identifier exists for the union of key and sensitivity label, but operation permission [see intro(2) ] as specified by the low-order 9 bits of semf...
When a shared memory segment associated with argumentkeyalready exists, settingIPC_EXCLandIPC_CREATin argumentshmflgwill force shmget() to fail. The following fields are initialized when ashmid_dsdata structure is created: The fieldsshm_perm.cuidandshm_perm.uidare set equal to the effective user ...
When a shared memory segment associated with argumentkeyalready exists, settingIPC_EXCLandIPC_CREATin argumentshmflgwill force shmget() to fail. The following fields are initialized when ashmid_dsdata structure is created: The fieldsshm_perm.cuidandshm_perm.uidare set equal to the effective user ...