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[RFC,v2,25/30] rust: fs: export file type from mode constants

Message ID 20240514131711.379322-26-wedsonaf@gmail.com (mailing list archive)
State New
Headers show
Series Rust abstractions for VFS | expand

Commit Message

Wedson Almeida Filho May 14, 2024, 1:17 p.m. UTC 
From: Wedson Almeida Filho <walmeida@microsoft.com>

Allow Rust file system modules to use these constants if needed.

Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
---
 rust/kernel/fs.rs | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
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Patch

diff --git a/rust/kernel/fs.rs b/rust/kernel/fs.rs
index d64fe1a5812f..4d90b23735bc 100644
--- a/rust/kernel/fs.rs
+++ b/rust/kernel/fs.rs
@@ -31,6 +31,33 @@ 
 /// This is C's `pgoff_t`.
 pub type PageOffset = usize;
 
+/// Contains constants related to Linux file modes.
+pub mod mode {
+    /// A bitmask used to the file type from a mode value.
+    pub const S_IFMT: u16 = bindings::S_IFMT as u16;
+
+    /// File type constant for block devices.
+    pub const S_IFBLK: u16 = bindings::S_IFBLK as u16;
+
+    /// File type constant for char devices.
+    pub const S_IFCHR: u16 = bindings::S_IFCHR as u16;
+
+    /// File type constant for directories.
+    pub const S_IFDIR: u16 = bindings::S_IFDIR as u16;
+
+    /// File type constant for pipes.
+    pub const S_IFIFO: u16 = bindings::S_IFIFO as u16;
+
+    /// File type constant for symbolic links.
+    pub const S_IFLNK: u16 = bindings::S_IFLNK as u16;
+
+    /// File type constant for regular files.
+    pub const S_IFREG: u16 = bindings::S_IFREG as u16;
+
+    /// File type constant for sockets.
+    pub const S_IFSOCK: u16 = bindings::S_IFSOCK as u16;
+}
+
 /// Maximum size of an inode.
 pub const MAX_LFS_FILESIZE: Offset = bindings::MAX_LFS_FILESIZE;