Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/third_party/rust/libudev/src/error.rs b/third_party/rust/libudev/src/error.rs
new file mode 100644
index 0000000000..2c503149c8
--- /dev/null
+++ b/third_party/rust/libudev/src/error.rs
@@ -0,0 +1,76 @@
+use std::ffi::CStr;
+use std::fmt;
+use std::io;
+use std::str;
+
+use std::error::Error as StdError;
+use std::result::Result as StdResult;
+
+use ::libc::c_int;
+
+/// A `Result` type for libudev operations.
+pub type Result<T> = StdResult<T,Error>;
+
+/// Types of errors that occur in libudev.
+#[derive(Debug,Clone,Copy,PartialEq,Eq)]
+pub enum ErrorKind {
+    NoMem,
+    InvalidInput,
+    Io(io::ErrorKind)
+}
+
+/// The error type for libudev operations.
+#[derive(Debug)]
+pub struct Error {
+    errno: c_int,
+}
+
+impl Error {
+    fn strerror(&self) -> &str {
+        unsafe {
+            str::from_utf8_unchecked(CStr::from_ptr(::libc::strerror(self.errno)).to_bytes())
+        }
+    }
+
+    /// Returns the corresponding `ErrorKind` for this error.
+    pub fn kind(&self) -> ErrorKind {
+        match self.errno {
+            ::libc::ENOMEM => ErrorKind::NoMem,
+            ::libc::EINVAL => ErrorKind::InvalidInput,
+            errno => ErrorKind::Io(io::Error::from_raw_os_error(errno).kind()),
+        }
+    }
+
+    /// Returns a description of the error.
+    pub fn description(&self) -> &str {
+        self.strerror()
+    }
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> StdResult<(),fmt::Error> {
+        fmt.write_str(self.strerror())
+    }
+}
+
+impl StdError for Error {
+    fn description(&self) -> &str {
+        self.strerror()
+    }
+}
+
+impl From<Error> for io::Error {
+    fn from(error: Error) -> io::Error {
+        let io_error_kind = match error.kind() {
+            ErrorKind::Io(kind) => kind,
+            ErrorKind::InvalidInput => io::ErrorKind::InvalidInput,
+            ErrorKind::NoMem => io::ErrorKind::Other,
+        };
+
+        io::Error::new(io_error_kind, error.strerror())
+    }
+}
+
+pub fn from_errno(errno: c_int) -> Error {
+    Error { errno: -errno }
+}