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-rw-r--r--include/grp.h6
-rw-r--r--include/unistd.h2
2 files changed, 7 insertions, 1 deletions
diff --git a/include/grp.h b/include/grp.h
index d4a3526a..51851851 100644
--- a/include/grp.h
+++ b/include/grp.h
@@ -28,6 +28,12 @@ struct group  *getgrent(void);
 void           endgrent(void);
 void           setgrent(void);
 
+#ifdef _GNU_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
diff --git a/include/unistd.h b/include/unistd.h
index b8f783ed..05180de0 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -154,7 +154,7 @@ int getpagesize(void);
 int sethostname(const char *, size_t);
 int usleep(unsigned);
 unsigned ualarm(unsigned, unsigned);
-int setgroups(int, const gid_t []);
+int setgroups(size_t, const gid_t []);
 int setresuid(uid_t, uid_t, uid_t);
 int setresgid(gid_t, gid_t, gid_t);
 #endif