commit e1c2f8b

launch: Make sure we stat and open the same file

Fixes #50.

 1@@ -202,7 +202,12 @@ handle_socket_data(int socket)
 2 			goto fail;
 3 		}
 4 
 5-		if (stat(path, &st) == -1) {
 6+		fd = open(path, request.flags);
 7+		if (fd == -1) {
 8+			fprintf(stderr, "open %s: %s\n", path, strerror(errno));
 9+			goto fail;
10+		}
11+		if (fstat(fd, &st) == -1) {
12 			fprintf(stderr, "stat %s: %s\n", path, strerror(errno));
13 			goto fail;
14 		}
15@@ -215,34 +220,19 @@ handle_socket_data(int socket)
16 				fprintf(stderr, "too many input devices opened\n");
17 				goto fail;
18 			}
19+			input_fds[num_input_fds++] = fd;
20 			break;
21 		case DRM_MAJOR:
22 			if (num_drm_fds == ARRAY_LENGTH(drm_fds)) {
23 				fprintf(stderr, "too many DRM devices opened\n");
24 				goto fail;
25 			}
26+			drm_fds[num_drm_fds++] = fd;
27 			break;
28 		default:
29 			fprintf(stderr, "device is not an input device\n");
30 			goto fail;
31 		}
32-
33-		fd = open(path, request.flags);
34-
35-		if (fd == -1) {
36-			fprintf(stderr, "open %s: %s\n", path, strerror(errno));
37-			goto fail;
38-		}
39-
40-		switch (major(st.st_rdev)) {
41-		case INPUT_MAJOR:
42-			input_fds[num_input_fds++] = fd;
43-			break;
44-		case DRM_MAJOR:
45-			drm_fds[num_drm_fds++] = fd;
46-			break;
47-		}
48-
49 		break;
50 	case SWC_LAUNCH_REQUEST_ACTIVATE_VT:
51 		if (!active)
52@@ -261,6 +251,8 @@ handle_socket_data(int socket)
53 
54 fail:
55 	response.success = false;
56+	if (fd != -1)
57+		close(fd);
58 	fd = -1;
59 done:
60 	send_fd(socket, fd, response_iov, 1);