[PATCH evemu] tools: handle holes in the event node lists

[Peter Hutterer]

The current code simply counts the number of directory entries and takes that
as the maximum event node given. That isn't true if we have a hole in the
event range after removing a device, making the last device in the list
unaccessible.

Fix this by actually looking at the event node numbers.

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 tools/find_event_devices.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/find_event_devices.c b/tools/find_event_devices.c
index fd975aa..1f7539a 100644
--- a/tools/find_event_devices.c
+++ b/tools/find_event_devices.c
@@ -46,6 +46,7 @@ char* find_event_devices(void)
 	struct dirent **namelist;
 	int i, ndev, devnum;
 	char *filename;
+	int max_device = 0;
 
 	ndev = scandir(DEV_INPUT_EVENT, &namelist, is_event_device, versionsort);
 	if (ndev <= 0)
@@ -68,13 +69,18 @@ char* find_event_devices(void)
 
 		fprintf(stderr, "%s:	%s\n", fname, name);
 		close(fd);
+
+		sscanf(namelist[i]->d_name, "event%d", &devnum);
+		if (devnum > max_device)
+			max_device = devnum;
+
 		free(namelist[i]);
 	}
 
-	fprintf(stderr, "Select the device event number [0-%d]: ", ndev - 1);
+	fprintf(stderr, "Select the device event number [0-%d]: ", max_device);
 	scanf("%d", &devnum);
 
-	if (devnum >= ndev || devnum < 0)
+	if (devnum > max_device || devnum < 0)
 		return NULL;
 
 	asprintf(&filename, "%s/%s%d",
-- 
2.1.0