Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 301 insertions, 0 deletions

diff --git a/vendor/rustix/src/fs/abs.rs b/vendor/rustix/src/fs/abs.rs
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+++ b/vendor/rustix/src/fs/abs.rs
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+//! POSIX-style filesystem functions which operate on bare paths.
+
+use crate::fd::OwnedFd;
+#[cfg(not(any(target_os = "espidf", target_os = "vita")))]
+use crate::fs::Access;
+#[cfg(not(any(
+    solarish,
+    target_os = "espidf",
+    target_os = "haiku",
+    target_os = "netbsd",
+    target_os = "nto",
+    target_os = "redox",
+    target_os = "vita",
+    target_os = "wasi",
+)))]
+use crate::fs::StatFs;
+#[cfg(not(any(target_os = "haiku", target_os = "redox", target_os = "wasi")))]
+use crate::fs::StatVfs;
+use crate::fs::{Mode, OFlags, Stat};
+#[cfg(not(target_os = "wasi"))]
+use crate::ugid::{Gid, Uid};
+use crate::{backend, io, path};
+#[cfg(feature = "alloc")]
+use {
+    crate::ffi::{CStr, CString},
+    crate::path::SMALL_PATH_BUFFER_SIZE,
+    alloc::vec::Vec,
+};
+
+/// `open(path, oflags, mode)`—Opens a file.
+///
+/// POSIX guarantees that `open` 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.
+///
+/// The `Mode` argument is only significant when creating a file.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/open.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/open.2.html
+#[inline]
+pub fn open<P: path::Arg>(path: P, flags: OFlags, mode: Mode) -> io::Result<OwnedFd> {
+    path.into_with_c_str(|path| backend::fs::syscalls::open(path, flags, mode))
+}
+
+/// `chmod(path, mode)`—Sets file or directory permissions.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/chmod.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/chmod.2.html
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub fn chmod<P: path::Arg>(path: P, mode: Mode) -> io::Result<()> {
+    path.into_with_c_str(|path| backend::fs::syscalls::chmod(path, mode))
+}
+
+/// `stat(path)`—Queries metadata for a file or directory.
+///
+/// [`Mode::from_raw_mode`] and [`FileType::from_raw_mode`] may be used to
+/// interpret the `st_mode` field.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/stat.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/stat.2.html
+/// [`Mode::from_raw_mode`]: crate::fs::Mode::from_raw_mode
+/// [`FileType::from_raw_mode`]: crate::fs::FileType::from_raw_mode
+#[inline]
+pub fn stat<P: path::Arg>(path: P) -> io::Result<Stat> {
+    path.into_with_c_str(backend::fs::syscalls::stat)
+}
+
+/// `lstat(path)`—Queries metadata for a file or directory, without following
+/// symlinks.
+///
+/// [`Mode::from_raw_mode`] and [`FileType::from_raw_mode`] may be used to
+/// interpret the `st_mode` field.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/lstat.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/lstat.2.html
+/// [`Mode::from_raw_mode`]: crate::fs::Mode::from_raw_mode
+/// [`FileType::from_raw_mode`]: crate::fs::FileType::from_raw_mode
+#[inline]
+pub fn lstat<P: path::Arg>(path: P) -> io::Result<Stat> {
+    path.into_with_c_str(backend::fs::syscalls::lstat)
+}
+
+/// `readlink(path)`—Reads the contents of a symlink.
+///
+/// If `reuse` is non-empty, reuse its buffer to store the result if possible.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/readlink.2.html
+#[cfg(feature = "alloc")]
+#[inline]
+pub fn readlink<P: path::Arg, B: Into<Vec<u8>>>(path: P, reuse: B) -> io::Result<CString> {
+    path.into_with_c_str(|path| _readlink(path, reuse.into()))
+}
+
+#[cfg(feature = "alloc")]
+fn _readlink(path: &CStr, mut buffer: Vec<u8>) -> io::Result<CString> {
+    // This code would benefit from having a better way to read into
+    // uninitialized memory, but that requires `unsafe`.
+    buffer.clear();
+    buffer.reserve(SMALL_PATH_BUFFER_SIZE);
+    buffer.resize(buffer.capacity(), 0_u8);
+
+    loop {
+        let nread = backend::fs::syscalls::readlink(path, &mut buffer)?;
+
+        let nread = nread as usize;
+        assert!(nread <= buffer.len());
+        if nread < buffer.len() {
+            buffer.resize(nread, 0_u8);
+            return Ok(CString::new(buffer).unwrap());
+        }
+        // Use `Vec` reallocation strategy to grow capacity exponentially.
+        buffer.reserve(1);
+        buffer.resize(buffer.capacity(), 0_u8);
+    }
+}
+
+/// `rename(old_path, new_path)`—Renames a file or directory.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/rename.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/rename.2.html
+#[inline]
+pub fn rename<P: path::Arg, Q: path::Arg>(old_path: P, new_path: Q) -> io::Result<()> {
+    old_path.into_with_c_str(|old_path| {
+        new_path.into_with_c_str(|new_path| backend::fs::syscalls::rename(old_path, new_path))
+    })
+}
+
+/// `unlink(path)`—Unlinks a file.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/unlink.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/unlink.2.html
+#[inline]
+pub fn unlink<P: path::Arg>(path: P) -> io::Result<()> {
+    path.into_with_c_str(backend::fs::syscalls::unlink)
+}
+
+/// `rmdir(path)`—Removes a directory.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/rmdir.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/rmdir.2.html
+#[inline]
+pub fn rmdir<P: path::Arg>(path: P) -> io::Result<()> {
+    path.into_with_c_str(backend::fs::syscalls::rmdir)
+}
+
+/// `link(old_path, new_path)`—Creates a hard link.
+///
+/// POSIX leaves it implementation-defined whether `link` follows a symlink in
+/// `old_path`, or creates a new link to the symbolic link itself. On platforms
+/// which have it, [`linkat`] avoids this problem since it has an [`AtFlags`]
+/// paramter and the [`AtFlags::SYMLINK_FOLLOW`] flag determines whether
+/// symlinks should be followed.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/link.2.html
+/// [`linkat`]: crate::fs::linkat
+/// [`AtFlags`]: crate::fs::AtFlags
+/// [`AtFlags::SYMLINK_FOLLOW`]: crate::fs::AtFlags::SYMLINK_FOLLOW
+#[inline]
+pub fn link<P: path::Arg, Q: path::Arg>(old_path: P, new_path: Q) -> io::Result<()> {
+    old_path.into_with_c_str(|old_path| {
+        new_path.into_with_c_str(|new_path| backend::fs::syscalls::link(old_path, new_path))
+    })
+}
+
+/// `symlink(old_path, new_path)`—Creates a symlink.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/symlink.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/symlink.2.html
+#[inline]
+pub fn symlink<P: path::Arg, Q: path::Arg>(old_path: P, new_path: Q) -> io::Result<()> {
+    old_path.into_with_c_str(|old_path| {
+        new_path.into_with_c_str(|new_path| backend::fs::syscalls::symlink(old_path, new_path))
+    })
+}
+
+/// `mkdir(path, mode)`—Creates a directory.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkdir.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/mkdir.2.html
+#[inline]
+pub fn mkdir<P: path::Arg>(path: P, mode: Mode) -> io::Result<()> {
+    path.into_with_c_str(|path| backend::fs::syscalls::mkdir(path, mode))
+}
+
+/// `access(path, access)`—Tests permissions for a file or directory.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/access.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/access.2.html
+#[cfg(not(any(target_os = "espidf", target_os = "vita")))]
+#[inline]
+pub fn access<P: path::Arg>(path: P, access: Access) -> io::Result<()> {
+    path.into_with_c_str(|path| backend::fs::syscalls::access(path, access))
+}
+
+/// `statfs`—Queries filesystem metadata.
+///
+/// Compared to [`statvfs`], this function often provides more information,
+/// though it's less portable.
+///
+/// # References
+///  - [Linux]
+///
+/// [Linux]: https://man7.org/linux/man-pages/man2/statfs.2.html
+#[cfg(not(any(
+    solarish,
+    target_os = "espidf",
+    target_os = "haiku",
+    target_os = "netbsd",
+    target_os = "nto",
+    target_os = "redox",
+    target_os = "vita",
+    target_os = "wasi",
+)))]
+#[inline]
+pub fn statfs<P: path::Arg>(path: P) -> io::Result<StatFs> {
+    path.into_with_c_str(backend::fs::syscalls::statfs)
+}
+
+/// `statvfs`—Queries filesystem metadata, POSIX version.
+///
+/// Compared to [`statfs`], this function often provides less information, but
+/// it is more portable. But even so, filesystems are very diverse and not all
+/// the fields are meaningful for every filesystem. And `f_fsid` doesn't seem
+/// to have a clear meaning anywhere.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/statvfs.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/statvfs.2.html
+#[cfg(not(any(target_os = "haiku", target_os = "redox", target_os = "wasi")))]
+#[inline]
+pub fn statvfs<P: path::Arg>(path: P) -> io::Result<StatVfs> {
+    path.into_with_c_str(backend::fs::syscalls::statvfs)
+}
+
+/// `chown(path, owner, group)`—Sets open file or directory ownership.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/chown.2.html
+#[cfg(not(target_os = "wasi"))]
+#[inline]
+pub fn chown<P: path::Arg>(path: P, owner: Option<Uid>, group: Option<Gid>) -> io::Result<()> {
+    path.into_with_c_str(|path| backend::fs::syscalls::chown(path, owner, group))
+}