1 files changed, 98 insertions, 0 deletions
diff --git a/openbsd-compat/bsd-setres_id.c b/openbsd-compat/bsd-setres_id.c
new file mode 100644
index 0000000..04752d5
--- /dev/null
+++ b/openbsd-compat/bsd-setres_id.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2012 Darren Tucker (dtucker at zip com au).
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+
+#include <sys/types.h>
+
+#include <stdarg.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "log.h"
+
+#if !defined(HAVE_SETRESGID) || defined(BROKEN_SETRESGID)
+int
+setresgid(gid_t rgid, gid_t egid, gid_t sgid)
+{
+	int ret = 0, saved_errno;
+
+	if (rgid != sgid) {
+		errno = ENOSYS;
+		return -1;
+	}
+#if defined(HAVE_SETREGID) && !defined(BROKEN_SETREGID)
+	if (setregid(rgid, egid) < 0) {
+		saved_errno = errno;
+		error("setregid %lu: %.100s", (u_long)rgid, strerror(errno));
+		errno = saved_errno;
+		ret = -1;
+	}
+#else
+	if (setegid(egid) < 0) {
+		saved_errno = errno;
+		error("setegid %lu: %.100s", (u_long)egid, strerror(errno));
+		errno = saved_errno;
+		ret = -1;
+	}
+	if (setgid(rgid) < 0) {
+		saved_errno = errno;
+		error("setgid %lu: %.100s", (u_long)rgid, strerror(errno));
+		errno = saved_errno;
+		ret = -1;
+	}
+#endif
+	return ret;
+}
+#endif
+
+#if !defined(HAVE_SETRESUID) || defined(BROKEN_SETRESUID)
+int
+setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+	int ret = 0, saved_errno;
+
+	if (ruid != suid) {
+		errno = ENOSYS;
+		return -1;
+	}
+#if defined(HAVE_SETREUID) && !defined(BROKEN_SETREUID)
+	if (setreuid(ruid, euid) < 0) {
+		saved_errno = errno;
+		error("setreuid %lu: %.100s", (u_long)ruid, strerror(errno));
+		errno = saved_errno;
+		ret = -1;
+	}
+#else
+
+# ifndef SETEUID_BREAKS_SETUID
+	if (seteuid(euid) < 0) {
+		saved_errno = errno;
+		error("seteuid %lu: %.100s", (u_long)euid, strerror(errno));
+		errno = saved_errno;
+		ret = -1;
+	}
+# endif
+	if (setuid(ruid) < 0) {
+		saved_errno = errno;
+		error("setuid %lu: %.100s", (u_long)ruid, strerror(errno));
+		errno = saved_errno;
+		ret = -1;
+	}
+#endif
+	return ret;
+}
+#endif