X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fmissing.h;h=ff5dcb40925bb640f9a124cfdde1ee5190616d6b;hp=539979e1bd517a19e47e06ef1c261992aaf6e30f;hb=c4dcdb9f4785937f2b73700e66b8cafa452f60a7;hpb=0511502083378313767ec4a6b950d124528c21e4

diff --git a/src/missing.h b/src/missing.h
index 539979e1b..ff5dcb409 100644
--- a/src/missing.h
+++ b/src/missing.h
@@ -101,4 +101,25 @@ 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
+
 #endif