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From 4f9b03c28555799f8672b905323bf6d1f95eb13f Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Fri, 20 Mar 2015 12:52:46 +1000
Subject: [PATCH] udev: builtin-keyboard: immediately EVIOCSKEYCODE when we
have a pair
Rather than building a map and looping through the map, immediately call the
ioctl when we have a successfully parsed property.
This has a side-effect: before the maximum number of ioctls was limited to the
size of the map (1024), now it is unlimited.
(cherry picked from commit cfba2656e3b4a9c5e03db4ec0a8f76c3762d35a8)
Resolves: #1500119
---
src/udev/udev-builtin-keyboard.c | 45 ++++++++++++++++------------------------
1 file changed, 18 insertions(+), 27 deletions(-)
diff --git a/src/udev/udev-builtin-keyboard.c b/src/udev/udev-builtin-keyboard.c
index bde7bf07f..515edd45c 100644
--- a/src/udev/udev-builtin-keyboard.c
+++ b/src/udev/udev-builtin-keyboard.c
@@ -71,10 +71,10 @@ static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], boo
struct {
unsigned scan;
unsigned key;
- } map[1024];
- unsigned map_count = 0;
+ } map;
unsigned release[1024];
unsigned release_count = 0;
+ _cleanup_close_ int fd = -1;
const char *node;
node = udev_device_get_devnode(dev);
@@ -128,37 +128,28 @@ static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], boo
}
}
- map[map_count].scan = scancode;
- map[map_count].key = keycode_num;
- if (map_count < ELEMENTSOF(map)-1)
- map_count++;
- }
-
- if (map_count > 0 || release_count > 0) {
- int fd;
- unsigned i;
-
- fd = open(node, O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
- if (fd < 0) {
- log_error_errno(errno, "Error, opening device '%s': %m", node);
- return EXIT_FAILURE;
+ if (fd == -1) {
+ fd = open(node, O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
+ if (fd < 0) {
+ log_error_errno(errno, "Error, opening device '%s': %m", node);
+ return EXIT_FAILURE;
+ }
}
- /* install list of map codes */
- for (i = 0; i < map_count; i++) {
- log_debug("keyboard: mapping scan code %d (0x%x) to key code %d (0x%x)",
- map[i].scan, map[i].scan, map[i].key, map[i].key);
- if (ioctl(fd, EVIOCSKEYCODE, &map[i]) < 0)
- log_error_errno(errno, "Error calling EVIOCSKEYCODE on device node '%s' (scan code 0x%x, key code %d): %m", node, map[i].scan, map[i].key);
- }
+ map.scan = scancode;
+ map.key = keycode_num;
- /* install list of force-release codes */
- if (release_count > 0)
- install_force_release(dev, release, release_count);
+ log_debug("keyboard: mapping scan code %d (0x%x) to key code %d (0x%x)",
+ map.scan, map.scan, map.key, map.key);
- close(fd);
+ if (ioctl(fd, EVIOCSKEYCODE, &map) < 0)
+ log_error_errno(errno, "Error calling EVIOCSKEYCODE on device node '%s' (scan code 0x%x, key code %d): %m", node, map.scan, map.key);
}
+ /* install list of force-release codes */
+ if (release_count > 0)
+ install_force_release(dev, release, release_count);
+
return EXIT_SUCCESS;
}