shm_overview(7) Miscellaneous Information Manual shm_overview(7) shm_overview - POSIX API POSIX . : shm_open(3) , . open(2). , , . ftruncate(2) ( ). mmap(2) . munmap(2) . shm_unlink(3) . close(2) ( shm_open(3)), . fstat(2) stat, . , : (st_size), (st_mode), (st_uid) (st_gid). fchown(2) . fchmod(2) . POSIX Linux 2.4 glibc 2.2. POSIX . , , shm_unlink(3). , POSIX, librt cc -lrt. On Linux, shared memory objects are created in a (tmpfs(5)) virtual filesystem, normally mounted under /dev/shm. Since Linux 2.6.19, Linux supports the use of access control lists (ACLs) to control the permissions of objects in the virtual filesystem. , , POSIX. System V (shmget(2), shmop(2) ) API. POSIX . , POSIX - ( ), System V. . fchmod(2), fchown(2), fstat(2), ftruncate(2), memfd_create(2), mmap(2), mprotect(2), munmap(2), shmget(2), shmop(2), shm_open(3), shm_unlink(3), sem_overview(7) Alexander Golubev , Azamat Hackimov , Hotellook, Nikita , Spiros Georgaras , Vladislav , Yuri Kozlov ; GNU 3 , . . , , . Linux man-pages 6.06 31 2023 . shm_overview(7)