From 1db283bf19c3e2a41345895b887a88aea086cb29 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 3 Apr 2011 16:20:57 -0400
Subject: add setresuid/setresgid functions (nonstandard)

---
 include/unistd.h       |  2 ++
 src/unistd/setresgid.c | 10 ++++++++++
 src/unistd/setresuid.c | 10 ++++++++++
 3 files changed, 22 insertions(+)
 create mode 100644 src/unistd/setresgid.c
 create mode 100644 src/unistd/setresuid.c

diff --git a/include/unistd.h b/include/unistd.h
index a3561114..35df1cd5 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -154,6 +154,8 @@ int sethostname(const char *, size_t);
 int usleep(unsigned);
 unsigned ualarm(unsigned, unsigned);
 int setgroups(int, const gid_t []);
+int setresuid(uid_t, uid_t, uid_t);
+int setresgid(gid_t, gid_t, gid_t);
 #endif
 
 #define _XOPEN_VERSION          700
diff --git a/src/unistd/setresgid.c b/src/unistd/setresgid.c
new file mode 100644
index 00000000..3c85a828
--- /dev/null
+++ b/src/unistd/setresgid.c
@@ -0,0 +1,10 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include "syscall.h"
+#include "libc.h"
+
+int setresgid(gid_t rgid, gid_t egid, gid_t sgid)
+{
+	if (libc.rsyscall) return libc.rsyscall(__NR_setresgid, rgid, egid, sgid, 0, 0, 0);
+	return syscall(SYS_setresgid, rgid, egid, sgid);
+}
diff --git a/src/unistd/setresuid.c b/src/unistd/setresuid.c
new file mode 100644
index 00000000..376ce406
--- /dev/null
+++ b/src/unistd/setresuid.c
@@ -0,0 +1,10 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include "syscall.h"
+#include "libc.h"
+
+int setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+	if (libc.rsyscall) return libc.rsyscall(__NR_setresuid, ruid, euid, suid, 0, 0, 0);
+	return syscall(SYS_setresuid, ruid, euid, suid);
+}
-- 
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