initial

exec-in-chroot.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdlib.h>
+
+const char *chroot_path = "/mnt/nfs/chroots/ff-build";
+
+int main (int argc, char **argv) {
+	uid_t user = getuid ();
+	char *cwd = getcwd (NULL, 0);
+	if (chroot (chroot_path) != 0) {
+		perror ("chroot");
+		return errno;
+	}
+
+	if (seteuid (user) != 0) {
+		perror ("seteuid");
+		return errno;
+	}
+
+	if (chdir (cwd) != 0) {
+		perror ("chdir");
+		chdir ("/");
+	}
+
+	free (cwd);
+
+	execvp (argv [0], &argv [0]);
+	perror ("execvp");
+	return errno;
+}