diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/udev/udev-builtin-keyboard.c | 86 |
1 files changed, 82 insertions, 4 deletions
diff --git a/src/udev/udev-builtin-keyboard.c b/src/udev/udev-builtin-keyboard.c index 785a607c9a..2a71ea56a5 100644 --- a/src/udev/udev-builtin-keyboard.c +++ b/src/udev/udev-builtin-keyboard.c @@ -95,6 +95,69 @@ static void map_keycode(int fd, const char *devnode, int scancode, const char *k 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 inline char* parse_token(const char *current, int32_t *val_out) { + char *next; + int32_t val; + + if (!current) + return NULL; + + val = strtol(current, &next, 0); + if (*next && *next != ':') + return NULL; + + if (next != current) + *val_out = val; + + if (*next) + next++; + + return next; +} + +static void override_abs(int fd, const char *devnode, + unsigned evcode, const char *value) { + struct input_absinfo absinfo; + int rc; + char *next; + + rc = ioctl(fd, EVIOCGABS(evcode), &absinfo); + if (rc < 0) { + log_error_errno(errno, "Error, unable to EVIOCGABS device '%s'", + devnode); + return; + } + + next = parse_token(value, &absinfo.minimum); + next = parse_token(next, &absinfo.maximum); + next = parse_token(next, &absinfo.resolution); + next = parse_token(next, &absinfo.fuzz); + next = parse_token(next, &absinfo.flat); + if (!next) { + log_error("Error, unable to parse EV_ABS override '%s' for '%s'\n", + value, devnode); + return; + } + + log_debug("keyboard: override %x with %d/%d/%d/%d/%d", evcode, + absinfo.minimum, absinfo.maximum, absinfo.resolution, + absinfo.fuzz, absinfo.flat); + rc = ioctl(fd, EVIOCSABS(evcode), &absinfo); + if (rc < 0) + log_error_errno(errno, "Error, unable to update device '%s'", + devnode); +} + +static int open_device(const char *devnode) { + int fd; + + fd = open(devnode, O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY); + if (fd < 0) + log_error_errno(errno, "Error, opening device '%s': %m", devnode); + + return fd < 0 ? -errno : fd; +} + static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], bool test) { struct udev_list_entry *entry; unsigned release[1024]; @@ -139,14 +202,29 @@ static int builtin_keyboard(struct udev_device *dev, int argc, char *argv[], boo } 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); + fd = open_device(node); + if (fd < 0) return EXIT_FAILURE; - } } map_keycode(fd, node, scancode, keycode); + } else if (startswith(key, "EVDEV_ABS_")) { + unsigned evcode; + + /* EVDEV_ABS_<EV_ABS code>=<min>:<max>:<res>:<fuzz>:<flat> */ + evcode = strtoul(key + 10, &endptr, 16); + if (endptr[0] != '\0') { + log_error("Error, unable to parse EV_ABS code from '%s'", key); + continue; + } + + if (fd == -1) { + fd = open_device(node); + if (fd < 0) + return EXIT_FAILURE; + } + + override_abs(fd, node, evcode, udev_list_entry_get_value(entry)); } } |