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Diffstat (limited to 'vendor/rustix/src/mm/msync.rs')
| -rw-r--r-- | vendor/rustix/src/mm/msync.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/vendor/rustix/src/mm/msync.rs b/vendor/rustix/src/mm/msync.rs new file mode 100644 index 000000000..7117a5067 --- /dev/null +++ b/vendor/rustix/src/mm/msync.rs @@ -0,0 +1,32 @@ +//! The `msync` function. +//! +//! # Safety +//! +//! `msync` operates on a raw pointer. Some forms of `msync` may mutate the +//! memory or have other side effects. +#![allow(unsafe_code)] + +use crate::{imp, io}; +use core::ffi::c_void; + +pub use imp::mm::types::MsyncFlags; + +/// `msync(addr, len, flags)`—Synchronizes a memory-mapping with its backing +/// storage. +/// +/// # Safety +/// +/// `addr` must be a valid pointer to memory that is appropriate to +/// call `msync` on. Some forms of `msync` may mutate the memory +/// or evoke a variety of side-effects on the mapping and/or the file. +/// +/// # References +/// - [POSIX] +/// - [Linux `msync`] +/// +/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/msync.html +/// [Linux `msync`]: https://man7.org/linux/man-pages/man2/msync.2.html +#[inline] +pub unsafe fn msync(addr: *mut c_void, len: usize, flags: MsyncFlags) -> io::Result<()> { + imp::mm::syscalls::msync(addr, len, flags) +} |