diff options
Diffstat (limited to 'vendor/rustix/src/io/read_write.rs')
| -rw-r--r-- | vendor/rustix/src/io/read_write.rs | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/vendor/rustix/src/io/read_write.rs b/vendor/rustix/src/io/read_write.rs index 1a4d37b65..d89ce7c7d 100644 --- a/vendor/rustix/src/io/read_write.rs +++ b/vendor/rustix/src/io/read_write.rs @@ -11,7 +11,6 @@ pub use backend::io::io_slice::{IoSlice, IoSliceMut}; #[cfg(feature = "std")] pub use std::io::{IoSlice, IoSliceMut}; -/// `RWF_*` constants for use with [`preadv2`] and [`pwritev2`]. #[cfg(any(target_os = "android", target_os = "linux"))] pub use backend::io::types::ReadWriteFlags; @@ -62,6 +61,10 @@ pub fn pread<Fd: AsFd>(fd: Fd, buf: &mut [u8], offset: u64) -> io::Result<usize> /// `pwrite(fd, bufs)`—Writes to a file at a given position. /// +/// Contrary to POSIX, on many popular platforms including Linux and FreeBSD, +/// if the file is opened in append mode, this ignores the offset appends the +/// data to the end of the file. +/// /// # References /// - [POSIX] /// - [Linux] @@ -121,6 +124,10 @@ pub fn preadv<Fd: AsFd>(fd: Fd, bufs: &mut [IoSliceMut<'_>], offset: u64) -> io: /// `pwritev(fd, bufs, offset)`—Writes to a file at a given position from /// multiple buffers. /// +/// Contrary to POSIX, on many popular platforms including Linux and FreeBSD, +/// if the file is opened in append mode, this ignores the offset appends the +/// data to the end of the file. +/// /// # References /// - [Linux] /// |