/proc/pid/map_files: fake all lineage symlinks

backslashxx · Dec 16, 2024 · ea7585f · ea7585f
1 parent 5c7b57d
commit ea7585f
Showing 1 changed file with 11 additions and 5 deletions.
diff --git a/fs/proc/base.c b/fs/proc/base.c
@@ -2190,11 +2190,17 @@ static int map_files_get_link(struct dentry *dentry, struct path *path)
 	rc = -ENOENT;
 	down_read(&mm->mmap_sem);
 	vma = find_exact_vma(mm, vm_start, vm_end);
-	if (vma && vma->vm_file) {
-		*path = vma->vm_file->f_path;
-		path_get(path);
-		rc = 0;
-	}
+ 	if (vma) {
+        	if (vma->vm_file) {
+            		if (strstr(vma->vm_file->f_path.dentry->d_name.name, "lineage")) { 
+            		rc = kern_path("/dev/ashmem (deleted)", LOOKUP_FOLLOW, path);
+        	} else {
+			*path = vma->vm_file->f_path;
+			path_get(path);
+                	rc = 0;
+            		}
+        	}
+    	}
 	up_read(&mm->mmap_sem);
 
 out_mmput: