1 files changed, 172 insertions, 0 deletions
diff --git a/vendor/rustix/src/imp/linux_raw/net/addr.rs b/vendor/rustix/src/imp/linux_raw/net/addr.rs
new file mode 100644
index 000000000..d5683f34e
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/net/addr.rs
@@ -0,0 +1,172 @@
+//! IPv4, IPv6, and Socket addresses.
+//!
+//! # Safety
+//!
+//! Linux's IPv6 type contains a union.
+#![allow(unsafe_code)]
+
+use super::super::c;
+use crate::ffi::CStr;
+use crate::{io, path};
+use core::convert::TryInto;
+use core::{fmt, slice};
+
+/// `struct sockaddr_un`
+#[derive(Clone)]
+#[doc(alias = "sockaddr_un")]
+pub struct SocketAddrUnix {
+    pub(crate) unix: c::sockaddr_un,
+    len: c::socklen_t,
+}
+
+impl SocketAddrUnix {
+    /// Construct a new Unix-domain address from a filesystem path.
+    #[inline]
+    pub fn new<P: path::Arg>(path: P) -> io::Result<Self> {
+        path.into_with_c_str(Self::_new)
+    }
+
+    #[inline]
+    fn _new(path: &CStr) -> io::Result<Self> {
+        let mut unix = Self::init();
+        let bytes = path.to_bytes_with_nul();
+        if bytes.len() > unix.sun_path.len() {
+            return Err(io::Errno::NAMETOOLONG);
+        }
+        for (i, b) in bytes.iter().enumerate() {
+            unix.sun_path[i] = *b as c::c_char;
+        }
+        let len = offsetof_sun_path() + bytes.len();
+        let len = len.try_into().unwrap();
+        Ok(Self { unix, len })
+    }
+
+    /// Construct a new abstract Unix-domain address from a byte slice.
+    #[inline]
+    pub fn new_abstract_name(name: &[u8]) -> io::Result<Self> {
+        let mut unix = Self::init();
+        if 1 + name.len() > unix.sun_path.len() {
+            return Err(io::Errno::NAMETOOLONG);
+        }
+        unix.sun_path[0] = b'\0' as c::c_char;
+        for (i, b) in name.iter().enumerate() {
+            unix.sun_path[1 + i] = *b as c::c_char;
+        }
+        let len = offsetof_sun_path() + 1 + name.len();
+        let len = len.try_into().unwrap();
+        Ok(Self { unix, len })
+    }
+
+    fn init() -> c::sockaddr_un {
+        c::sockaddr_un {
+            sun_family: c::AF_UNIX as _,
+            sun_path: [0; 108],
+        }
+    }
+
+    /// For a filesystem path address, return the path.
+    #[inline]
+    pub fn path(&self) -> Option<&CStr> {
+        let len = self.len();
+        if len != 0 && self.unix.sun_path[0] != b'\0' as c::c_char {
+            let end = len as usize - offsetof_sun_path();
+            let bytes = &self.unix.sun_path[..end];
+            // Safety: `from_raw_parts` to convert from `&[c_char]` to `&[u8]`. And
+            // `from_bytes_with_nul_unchecked` since the string is NUL-terminated.
+            unsafe {
+                Some(CStr::from_bytes_with_nul_unchecked(slice::from_raw_parts(
+                    bytes.as_ptr().cast(),
+                    bytes.len(),
+                )))
+            }
+        } else {
+            None
+        }
+    }
+
+    /// For an abstract address, return the identifier.
+    #[inline]
+    pub fn abstract_name(&self) -> Option<&[u8]> {
+        let len = self.len();
+        if len != 0 && self.unix.sun_path[0] == b'\0' as c::c_char {
+            let end = len as usize - offsetof_sun_path();
+            let bytes = &self.unix.sun_path[1..end];
+            // Safety: `from_raw_parts` to convert from `&[c_char]` to `&[u8]`.
+            unsafe { Some(slice::from_raw_parts(bytes.as_ptr().cast(), bytes.len())) }
+        } else {
+            None
+        }
+    }
+
+    #[inline]
+    pub(crate) fn addr_len(&self) -> c::socklen_t {
+        self.len
+    }
+
+    #[inline]
+    pub(crate) fn len(&self) -> usize {
+        self.addr_len() as usize
+    }
+}
+
+impl PartialEq for SocketAddrUnix {
+    #[inline]
+    fn eq(&self, other: &Self) -> bool {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].eq(&other.unix.sun_path[..other_len])
+    }
+}
+
+impl Eq for SocketAddrUnix {}
+
+impl PartialOrd for SocketAddrUnix {
+    #[inline]
+    fn partial_cmp(&self, other: &Self) -> Option<core::cmp::Ordering> {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].partial_cmp(&other.unix.sun_path[..other_len])
+    }
+}
+
+impl Ord for SocketAddrUnix {
+    #[inline]
+    fn cmp(&self, other: &Self) -> core::cmp::Ordering {
+        let self_len = self.len() - offsetof_sun_path();
+        let other_len = other.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].cmp(&other.unix.sun_path[..other_len])
+    }
+}
+
+impl core::hash::Hash for SocketAddrUnix {
+    #[inline]
+    fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
+        let self_len = self.len() - offsetof_sun_path();
+        self.unix.sun_path[..self_len].hash(state)
+    }
+}
+
+impl fmt::Debug for SocketAddrUnix {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(path) = self.path() {
+            path.fmt(fmt)
+        } else if let Some(name) = self.abstract_name() {
+            name.fmt(fmt)
+        } else {
+            "(unnamed)".fmt(fmt)
+        }
+    }
+}
+
+/// `struct sockaddr_storage` as a raw struct.
+pub type SocketAddrStorage = c::sockaddr;
+
+/// Return the offset of the `sun_path` field of `sockaddr_un`.
+#[inline]
+pub(crate) fn offsetof_sun_path() -> usize {
+    let z = c::sockaddr_un {
+        sun_family: 0_u16,
+        sun_path: [0; 108],
+    };
+    (crate::utils::as_ptr(&z.sun_path) as usize) - (crate::utils::as_ptr(&z) as usize)
+}