add missing xattr functions

[musl] / include / grp.h

diff --git a/include/grp.h b/include/grp.h
index d4a3526..0a55c62 100644 (file)
--- a/include/grp.h
+++ b/include/grp.h
@@ -28,6 +28,12 @@ struct group  *getgrent(void);
 void           endgrent(void);
 void           setgrent(void);
 
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+int getgrouplist(const char *, gid_t, gid_t *, int *);
+int setgroups(size_t, const gid_t *);
+int initgroups(const char *, gid_t);
+#endif
+
 #ifdef __cplusplus
 }
 #endif