| //! POSIX shared memory |
| |
| use crate::fd::OwnedFd; |
| use crate::{backend, io, path}; |
| |
| pub use crate::backend::fs::types::Mode; |
| pub use crate::backend::shm::types::ShmOFlags; |
| |
| /// `shm_open(name, oflags, mode)`—Opens a shared memory object. |
| /// |
| /// For portability, `name` should begin with a slash, contain no other |
| /// slashes, and be no longer than an implementation-defined limit (255 on |
| /// Linux). |
| /// |
| /// Exactly one of [`ShmOFlags::RDONLY`] and [`ShmOFlags::RDWR`] should be |
| /// passed. The file descriptor will be opened with `FD_CLOEXEC` set. |
| /// |
| /// # References |
| /// - [POSIX] |
| /// - [Linux] |
| /// |
| /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/shm_open.html |
| /// [Linux]: https://man7.org/linux/man-pages/man3/shm_open.3.html |
| #[inline] |
| pub fn shm_open<P: path::Arg>(name: P, flags: ShmOFlags, mode: Mode) -> io::Result<OwnedFd> { |
| name.into_with_c_str(|name| backend::shm::syscalls::shm_open(name, flags, mode)) |
| } |
| |
| /// `shm_unlink(name)`—Unlinks a shared memory object. |
| /// |
| /// # References |
| /// - [POSIX] |
| /// - [Linux] |
| /// |
| /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/shm_unlink.html |
| /// [Linux]: https://man7.org/linux/man-pages/man3/shm_unlink.3.html |
| #[inline] |
| pub fn shm_unlink<P: path::Arg>(name: P) -> io::Result<()> { |
| name.into_with_c_str(backend::shm::syscalls::shm_unlink) |
| } |