dissect: automatically mark partitions read-only that have a read-only file system

[elogind.git] / src / basic / mount-util.c

diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index adf60c7ee26873944ab8833095c519d210670281..d8850bf83c05628ff9cf3e76c7e59da58de86ede 100644 (file)
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -578,6 +578,19 @@ bool fstype_is_api_vfs(const char *fstype) {
         return nulstr_contains(table, fstype);
 }
 
+bool fstype_is_ro(const char *fstype) {
+
+        /* All Linux file systems that are necessarily read-only */
+
+        static const char table[] =
+                "DM_verity_hash\0"
+                "iso9660\0"
+                "squashfs\0"
+                ;
+
+        return nulstr_contains(table, fstype);
+}
+
 int repeat_unmount(const char *path, int flags) {
         bool done = false;