From 3b4e03492fd157ab87ea625a8ad1eb91cef7396b Mon Sep 17 00:00:00 2001

From: Peter Hutterer <peter.hutterer@who-t.net>

Date: Fri, 20 Mar 2015 13:17:20 +1000

Subject: [PATCH] udev: builtin-keyboard: move actual key mapping to a helper

 function

No changes in the mapping, but previously we opened the device only on

successful parsing. Now we open the mapping as soon as we have a value that

looks interesting. Since errors are supposed to be the exception, not the

rule, this is probably fine.

(cherry picked from commit c9a8e34094733018727677fee44be2c2952224c0)

Resolves: #1500119

---

 src/udev/udev-builtin-keyboard.c | 58 +++++++++++++++++++++++-----------------

 1 file changed, 33 insertions(+), 25 deletions(-)

diff --git a/src/udev/udev-builtin-keyboard.c b/src/udev/udev-builtin-keyboard.c

index 515edd45c..f33401790 100644

--- a/src/udev/udev-builtin-keyboard.c

+++ b/src/udev/udev-builtin-keyboard.c

@@ -66,12 +66,41 @@ static int install_force_release(struct udev_device *dev, const unsigned *releas

         return ret;

 }

-static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], bool test) {

-        struct udev_list_entry *entry;

+static void map_keycode(int fd, const char *devnode, int scancode, const char *keycode)

+{

         struct {

                 unsigned scan;

                 unsigned key;

         } map;

+        char *endptr;

+        const struct key *k;

+        unsigned keycode_num;

+

+        /* translate identifier to key code */

+        k = keyboard_lookup_key(keycode, strlen(keycode));

+        if (k) {

+                keycode_num = k->id;

+        } else {

+                /* check if it's a numeric code already */

+                keycode_num = strtoul(keycode, &endptr, 0);

+                if (endptr[0] !='\0') {

+                        log_error("Error, unknown key identifier '%s'", keycode);

+                        return;

+                }

+        }

+

+        map.scan = scancode;

+        map.key = keycode_num;

+

+        log_debug("keyboard: mapping scan code %d (0x%x) to key code %d (0x%x)",

+                  map.scan, map.scan, map.key, map.key);

+

+        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", devnode, map.scan, map.key);

+}

+

+static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], bool test) {

+        struct udev_list_entry *entry;

         unsigned release[1024];

         unsigned release_count = 0;

         _cleanup_close_ int fd = -1;

@@ -85,10 +114,9 @@ static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], boo

         udev_list_entry_foreach(entry, udev_device_get_properties_list_entry(dev)) {

                 const char *key;

-                unsigned scancode, keycode_num;

                 char *endptr;

+                unsigned scancode;

                 const char *keycode;

-                const struct key *k;

                 key = udev_list_entry_get_name(entry);

                 if (!startswith(key, "KEYBOARD_KEY_"))

@@ -115,19 +143,6 @@ static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], boo

                                 continue;

                 }

-                /* translate identifier to key code */

-                k = keyboard_lookup_key(keycode, strlen(keycode));

-                if (k) {

-                        keycode_num = k->id;

-                } else {

-                        /* check if it's a numeric code already */

-                        keycode_num = strtoul(keycode, &endptr, 0);

-                        if (endptr[0] !='\0') {

-                                log_error("Error, unknown key identifier '%s'", keycode);

-                                continue;

-                        }

-                }

-

                 if (fd == -1) {

                         fd = open(node, O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);

                         if (fd < 0) {

@@ -136,14 +151,7 @@ static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], boo

                         }

                 }

-                map.scan = scancode;

-                map.key = keycode_num;

-

-                log_debug("keyboard: mapping scan code %d (0x%x) to key code %d (0x%x)",

-                          map.scan, map.scan, map.key, map.key);

-

-                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);

+                map_keycode(fd, node, scancode, keycode);

         }

         /* install list of force-release codes */