"fix the building failure of the extend lseek on dir"

Author: briteny-pwn

project/libfuse-fs/src/overlayfs/async_io.rs

@@ -13,7 +13,6 @@ use std::io::ErrorKind;
 use std::num::NonZeroU32;
 use std::sync::Arc;
 use std::sync::atomic::Ordering;
-use tracing::error;
 use tracing::info;
 use tracing::trace;
 
@@ -937,7 +936,7 @@ impl Filesystem for OverlayFs {
             // This enables seekdir/telldir functionality on directories
             match whence {
                 // SEEK_SET: Set the directory position to an absolute value
-                libc::SEEK_SET => {
+                x if x == libc::SEEK_SET as u32 => {
                     // Validate offset bounds to prevent overflow
                     // Directory offsets should not exceed i64::MAX
                     if offset > i64::MAX as u64 {
@@ -949,11 +948,11 @@ impl Filesystem for OverlayFs {
                     layer.lseek(req, real_inode, real_handle, offset, whence).await
                 }
                 // SEEK_CUR: Move relative to the current directory position
-                libc::SEEK_CUR => {
+                x if x == libc::SEEK_CUR as u32 => {
                     // Get current position from underlying layer
                     // This is needed to calculate the new position
                     let current = match layer
-                        .lseek(req, real_inode, real_handle, 0, libc::SEEK_CUR)
+                        .lseek(req, real_inode, real_handle, 0, libc::SEEK_CUR as u32)
                         .await
                     {
                         Ok(r) => r.offset,
@@ -971,7 +970,7 @@ impl Filesystem for OverlayFs {
                         // Actually set the underlying offset to the new value so behavior
                         // matches passthrough which uses libc::lseek64 to set the fd offset.
                         match layer
-                            .lseek(req, real_inode, real_handle, new_offset, libc::SEEK_SET)
+                            .lseek(req, real_inode, real_handle, new_offset, libc::SEEK_SET as u32)
                             .await
                         {
                             Ok(_) => Ok(ReplyLSeek { offset: new_offset }),

project/libfuse-fs/src/passthrough/async_io.rs

@@ -1807,7 +1807,7 @@ impl Filesystem for PassthroughFs {
             // This enables seekdir/telldir functionality on directories
             match whence {
                 // SEEK_SET: set directory offset to an absolute value
-                libc::SEEK_SET => {
+                x if x == libc::SEEK_SET as u32 => {
                     // Validate offset bounds to prevent overflow
                     // Directory offsets should not exceed i64::MAX
                     if offset > i64::MAX as u64 {
@@ -1825,7 +1825,7 @@ impl Filesystem for PassthroughFs {
                     Ok(ReplyLSeek { offset: res as u64 })
                 }
                 // SEEK_CUR: move relative to current directory offset
-                libc::SEEK_CUR => {
+                x if x == libc::SEEK_CUR as u32 => {
                     // Get current position using libc::lseek64 with offset 0
                     let cur = unsafe { libc::lseek64(file.as_raw_fd(), 0, libc::SEEK_CUR) };
                     if cur < 0 {
@@ -1860,9 +1860,9 @@ impl Filesystem for PassthroughFs {
             let (_guard, file) = data.get_file_mut().await;
 
             // Safe because this doesn't modify any memory and we check the return value.
-            // Use standard libc::lseek for regular files
+            // Use 64-bit seek for regular files to match kernel offsets
             let res = unsafe {
-                libc::lseek(
+                libc::lseek64(
                     file.as_raw_fd(),
                     offset as libc::off64_t,
                     whence as libc::c_int,