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-rw-r--r--sysdep/unix/io.c20
-rw-r--r--sysdep/unix/main.c2
-rw-r--r--sysdep/unix/unix.h2
3 files changed, 24 insertions, 0 deletions
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 4030b86..ed5b89f 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -1194,3 +1194,23 @@ io_loop(void)
}
}
}
+
+void
+test_old_bird(char *path)
+{
+ int fd;
+ struct sockaddr_un sa;
+
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+
+ if (fd < 0)
+ die("Cannot create socket: %m");
+ bzero(&sa, sizeof(sa));
+ sa.sun_family = AF_UNIX;
+ strcpy(sa.sun_path, path);
+ if (connect(fd, (struct sockaddr *) &sa, SUN_LEN(&sa)) == 0)
+ die("I found another BIRD running.");
+ close(fd);
+}
+
+
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index ec8802b..335f42a 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -412,6 +412,8 @@ main(int argc, char **argv)
log_init_debug("");
log_init(debug_flag, 1);
+ test_old_bird(path_control_socket);
+
DBG("Initializing.\n");
resource_init();
olock_init();
diff --git a/sysdep/unix/unix.h b/sysdep/unix/unix.h
index 72b6ef5..997a408 100644
--- a/sysdep/unix/unix.h
+++ b/sysdep/unix/unix.h
@@ -46,6 +46,8 @@ void fill_in_sockaddr(sockaddr *sa, ip_addr a, unsigned port);
void get_sockaddr(sockaddr *sa, ip_addr *a, unsigned *port, int check);
int sk_open_unix(struct birdsock *s, char *name);
void *tracked_fopen(struct pool *, char *name, char *mode);
+void test_old_bird(char *path);
+
/* krt.c bits */