mount: allow data argument to be a list

2 files changed, 12 insertions, 2 deletions

diff --git a/examples/chrootfuse.py b/examples/chrootfuse.py
index 55a394e..ef67e8a 100755
--- a/examples/chrootfuse.py
+++ b/examples/chrootfuse.py
@@ -71,7 +71,13 @@ def main() -> None:
         linuxnamespaces.MountFlags.RDONLY
         if readonly
         else linuxnamespaces.MountFlags.NONE,
-        "fd=%d,rootmode=040755,user_id=0,group_id=0,allow_other" % fusefd,
+        [
+            "fd=%d" % fusefd,
+            "rootmode=040755",
+            "user_id=0",
+            "group_id=0",
+            "allow_other",
+        ],
     )
     os.chdir("/mnt")
     linuxnamespaces.bind_mount("/proc", "proc", recursive=True)
diff --git a/linuxnamespaces/syscalls.py b/linuxnamespaces/syscalls.py
index 986238c..368f437 100644
--- a/linuxnamespaces/syscalls.py
+++ b/linuxnamespaces/syscalls.py
@@ -511,7 +511,7 @@ def mount(
     target: PathConvertible,
     filesystemtype: str | None,
     flags: MountFlags = MountFlags.NONE,
-    data: str | None = None,
+    data: str | list[str] | None = None,
 ) -> None:
     """Python wrapper for mount(2)."""
     if (flags & MountFlags.PROPAGATION_FLAGS).bit_count() > 1:
@@ -523,6 +523,10 @@ def mount(
         )
     ):
         raise ValueError("invalid flags for mount")
+    if isinstance(data, list):
+        if any("," in s for s in data):
+            raise ValueError("data elements must not contain a comma")
+        data = ",".join(data)
     call_libc(
         "mount",
         os.fsencode(source),