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Message-Id: <1405187706-27171-1-git-send-email-bcook@openbsd.org>
Date: Sat, 12 Jul 2014 11:55:06 -0600
From: Brent Cook <bcook@...nbsd.org>
To: musl@...ts.openwall.com
Cc: Brent Cook <bcook@...nbsd.org>
Subject: [PATCH] implement issetugid(2)
>From OpenBSD 2.0 and later
http://www.openbsd.org/cgi-bin/man.cgi?query=issetugid&sektion=2
---
include/unistd.h | 1 +
src/unistd/issetugid.c | 9 +++++++++
2 files changed, 10 insertions(+)
create mode 100644 src/unistd/issetugid.c
diff --git a/include/unistd.h b/include/unistd.h
index bb19cd8..30290c3 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -109,6 +109,7 @@ uid_t geteuid(void);
gid_t getgid(void);
gid_t getegid(void);
int getgroups(int, gid_t []);
+int issetugid(void);
int setuid(uid_t);
int setreuid(uid_t, uid_t);
int seteuid(uid_t);
diff --git a/src/unistd/issetugid.c b/src/unistd/issetugid.c
new file mode 100644
index 0000000..8c81336
--- /dev/null
+++ b/src/unistd/issetugid.c
@@ -0,0 +1,9 @@
+#include <errno.h>
+#include <unistd.h>
+#include <sys/auxv.h>
+
+int issetugid(void)
+{
+ errno = 0;
+ return !(getauxval(AT_SECURE) == 0 && errno != ENOENT);
+}
--
1.9.1
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