machinectl/machined: implement "rename", "clone", "read-only" verbs for machine images

[elogind.git] / src / shared / missing.h

diff --git a/src/shared/missing.h b/src/shared/missing.h
index 91a6215226f840edb57c437f1b3d28c0c430b603..08cf83647d4e520b43db8877a823558903f20bcb 100644 (file)
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -250,6 +250,14 @@ struct btrfs_ioctl_fs_info_args {
                                  struct btrfs_ioctl_vol_args)
 #endif
 
+#ifndef BTRFS_FIRST_FREE_OBJECTID
+#define BTRFS_FIRST_FREE_OBJECTID 256
+#endif
+
+#ifndef BTRFS_ROOT_ITEM_KEY
+#define BTRFS_ROOT_ITEM_KEY 132
+#endif
+
 #ifndef BTRFS_SUPER_MAGIC
 #define BTRFS_SUPER_MAGIC 0x9123683E
 #endif
@@ -649,3 +657,13 @@ static inline int raw_clone(unsigned long flags, void *child_stack) {
 static inline pid_t raw_getpid(void) {
         return (pid_t) syscall(__NR_getpid);
 }
+
+#if !HAVE_DECL_RENAMEAT2
+static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
+        return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
+}
+#endif
+
+#ifndef RENAME_NOREPLACE
+#define RENAME_NOREPLACE (1 << 0)
+#endif