umount: make sure skip_ro is always correctly initialized

[elogind.git] / src / missing.h

diff --git a/src/missing.h b/src/missing.h
index 539979e1bd517a19e47e06ef1c261992aaf6e30f..c0cb3eaea7cf186b18cef8a8df600a9da3e870f0 100644 (file)
--- a/src/missing.h
+++ b/src/missing.h
@@ -101,4 +101,29 @@ static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t ma
         return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
 }
 
+#ifndef BTRFS_IOCTL_MAGIC
+#define BTRFS_IOCTL_MAGIC 0x94
+#endif
+
+#ifndef BTRFS_PATH_NAME_MAX
+#define BTRFS_PATH_NAME_MAX 4087
+#endif
+
+struct btrfs_ioctl_vol_args {
+        int64_t fd;
+        char name[BTRFS_PATH_NAME_MAX + 1];
+};
+
+#ifndef BTRFS_IOC_DEFRAG
+#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args)
+#endif
+
+#ifndef BTRFS_SUPER_MAGIC
+#define BTRFS_SUPER_MAGIC 0x9123683E
+#endif
+
+#ifndef MS_MOVE
+#define MS_MOVE 8192
+#endif
+
 #endif