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Diffstat (limited to 'vendor/rustix-0.37.6/src/io/dup.rs')
| -rw-r--r-- | vendor/rustix-0.37.6/src/io/dup.rs | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/vendor/rustix-0.37.6/src/io/dup.rs b/vendor/rustix-0.37.6/src/io/dup.rs deleted file mode 100644 index 97a11f35c..000000000 --- a/vendor/rustix-0.37.6/src/io/dup.rs +++ /dev/null @@ -1,83 +0,0 @@ -//! Functions which duplicate file descriptors. - -use crate::fd::OwnedFd; -use crate::{backend, io}; -use backend::fd::AsFd; - -#[cfg(not(target_os = "wasi"))] -pub use backend::io::types::DupFlags; - -/// `dup(fd)`—Creates a new `OwnedFd` instance that shares the same -/// underlying [file description] as `fd`. -/// -/// This function does not set the `O_CLOEXEC` flag. To do a `dup` that does -/// set `O_CLOEXEC`, use [`fcntl_dupfd_cloexec`]. -/// -/// POSIX guarantees that `dup` will use the lowest unused file descriptor, -/// however it is not safe in general to rely on this, as file descriptors may -/// be unexpectedly allocated on other threads or in libraries. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// - [Apple] -/// -/// [file description]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_258 -/// [`fcntl_dupfd_cloexec`]: crate::io::fcntl_dupfd_cloexec -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup.html -/// [Linux]: https://man7.org/linux/man-pages/man2/dup.2.html -/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/dup.2.html -#[cfg(not(target_os = "wasi"))] -#[inline] -pub fn dup<Fd: AsFd>(fd: Fd) -> io::Result<OwnedFd> { - backend::io::syscalls::dup(fd.as_fd()) -} - -/// `dup2(fd, new)`—Changes the [file description] of a file descriptor. -/// -/// `dup2` conceptually closes `new` and then sets the file description for -/// `new` to be the same as the one for `fd`. This is a very unusual operation, -/// and should only be used on file descriptors where you know how `new` will -/// be subsequently used. -/// -/// This function does not set the `O_CLOEXEC` flag. To do a `dup2` that does -/// set `O_CLOEXEC`, use [`dup3`] with [`DupFlags::CLOEXEC`] on platforms which -/// support it, or [`fcntl_dupfd_cloexec`] -/// -/// For `dup2` to stdin, stdout, and stderr, see [`io::dup2_stdin`], -/// [`io::dup2_stdout`], and [`io::dup2_stderr`]. -/// -/// # References -/// - [POSIX] -/// - [Linux] -/// - [Apple] -/// -/// [file description]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_258 -/// [`fcntl_dupfd_cloexec`]: crate::io::fcntl_dupfd_cloexec -/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html -/// [Linux]: https://man7.org/linux/man-pages/man2/dup2.2.html -/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/dup2.2.html -#[cfg(not(target_os = "wasi"))] -#[inline] -pub fn dup2<Fd: AsFd>(fd: Fd, new: &mut OwnedFd) -> io::Result<()> { - backend::io::syscalls::dup2(fd.as_fd(), new) -} - -/// `dup3(fd, new, flags)`—Changes the [file description] of a file -/// descriptor, with flags. -/// -/// `dup3` is the same as [`dup2`] but adds an additional flags operand, and it -/// fails in the case that `fd` and `new` have the same file descriptor value. -/// This additional difference is the reason this function isn't named -/// `dup2_with`. -/// -/// # References -/// - [Linux] -/// -/// [file description]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_258 -/// [Linux]: https://man7.org/linux/man-pages/man2/dup3.2.html -#[cfg(not(any(target_os = "aix", target_os = "wasi")))] -#[inline] -pub fn dup3<Fd: AsFd>(fd: Fd, new: &mut OwnedFd, flags: DupFlags) -> io::Result<()> { - backend::io::syscalls::dup3(fd.as_fd(), new, flags) -} |