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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/memmap2/src/stub.rs
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/memmap2/src/stub.rs')
-rw-r--r--third_party/rust/memmap2/src/stub.rs81
1 files changed, 81 insertions, 0 deletions
diff --git a/third_party/rust/memmap2/src/stub.rs b/third_party/rust/memmap2/src/stub.rs
new file mode 100644
index 0000000000..e756da4f68
--- /dev/null
+++ b/third_party/rust/memmap2/src/stub.rs
@@ -0,0 +1,81 @@
+use std::fs::File;
+use std::io;
+
+// A stable alternative to https://doc.rust-lang.org/stable/std/primitive.never.html
+enum Never {}
+
+pub struct MmapInner {
+ never: Never,
+}
+
+impl MmapInner {
+ fn new() -> io::Result<MmapInner> {
+ Err(io::Error::new(
+ io::ErrorKind::Other,
+ "platform not supported",
+ ))
+ }
+
+ pub fn map(_: usize, _: &File, _: u64, _: bool) -> io::Result<MmapInner> {
+ MmapInner::new()
+ }
+
+ pub fn map_exec(_: usize, _: &File, _: u64, _: bool) -> io::Result<MmapInner> {
+ MmapInner::new()
+ }
+
+ pub fn map_mut(_: usize, _: &File, _: u64, _: bool) -> io::Result<MmapInner> {
+ MmapInner::new()
+ }
+
+ pub fn map_copy(_: usize, _: &File, _: u64, _: bool) -> io::Result<MmapInner> {
+ MmapInner::new()
+ }
+
+ pub fn map_copy_read_only(_: usize, _: &File, _: u64, _: bool) -> io::Result<MmapInner> {
+ MmapInner::new()
+ }
+
+ pub fn map_anon(_: usize, _: bool) -> io::Result<MmapInner> {
+ MmapInner::new()
+ }
+
+ pub fn flush(&self, _: usize, _: usize) -> io::Result<()> {
+ match self.never {}
+ }
+
+ pub fn flush_async(&self, _: usize, _: usize) -> io::Result<()> {
+ match self.never {}
+ }
+
+ pub fn make_read_only(&mut self) -> io::Result<()> {
+ match self.never {}
+ }
+
+ pub fn make_exec(&mut self) -> io::Result<()> {
+ match self.never {}
+ }
+
+ pub fn make_mut(&mut self) -> io::Result<()> {
+ match self.never {}
+ }
+
+ #[inline]
+ pub fn ptr(&self) -> *const u8 {
+ match self.never {}
+ }
+
+ #[inline]
+ pub fn mut_ptr(&mut self) -> *mut u8 {
+ match self.never {}
+ }
+
+ #[inline]
+ pub fn len(&self) -> usize {
+ match self.never {}
+ }
+}
+
+pub fn file_len(file: &File) -> io::Result<u64> {
+ Ok(file.metadata()?.len())
+}