mirror of
https://github.com/Ponce/slackbuilds
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101 lines
2.9 KiB
Diff
101 lines
2.9 KiB
Diff
diff -Naur esekeyd-esekeyd-1.2.7/src/input.c esekeyd-esekeyd-1.2.7.patched/src/input.c
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--- esekeyd-esekeyd-1.2.7/src/input.c 2010-07-04 16:23:51.000000000 -0400
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+++ esekeyd-esekeyd-1.2.7.patched/src/input.c 2020-11-01 20:22:49.777498592 -0500
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@@ -10,6 +10,14 @@
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#include "esekey.h"
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+#include <dirent.h>
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+#define CLASS_DIR "/sys/class/input"
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+#define DEV_DIR "/dev/input"
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+
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+#ifndef PATH_MAX
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+# define PATH_MAX 1024
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+#endif
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+
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signed char check_handlers (void)
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{
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FILE *fp = NULL;
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@@ -45,32 +53,63 @@
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return 0;
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}
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-signed char find_input_dev (void)
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+/* return true if /dev/input/event<devno> is a keyboard.
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+ This could also have been done by way of ioctls instead of reading
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+ from /sys files. Hopefully the /sys API doesn't change...
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+ It's documented thoroughly here:
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+ https://unix.stackexchange.com/questions/74903/explain-ev-in-proc-bus-input-devices-data
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+ */
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+int is_keyboard(int devno)
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{
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- FILE *fp = NULL;
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- signed char have_evdev = -2;
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+ char filename[PATH_MAX + 1];
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+ char *buf = NULL;
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+ size_t len = 0, caps = 0;
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+ size_t wantcaps = (1 << EV_SYN | 1 << EV_KEY | 1 << EV_MSC | 1 << EV_LED | 1 << EV_REP);
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+ FILE *fp;
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+
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+ sprintf(filename, "%s/event%d/device/capabilities/ev", CLASS_DIR, devno);
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+ if(!(fp = fopen(filename, "r"))) return 0;
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+
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+ getline(&buf, &len, fp);
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+ fclose(fp);
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+ if(!buf) return 0;
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- fp = fopen (INPUT_DEVICES, "r");
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+ caps = strtol(buf, NULL, 16);
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+ free(buf);
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- if (!fp)
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+ return (caps & wantcaps) == wantcaps;
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+}
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+
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+/* returns the highest-numbered keyboard found. The common case is
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+ that the internal keyboard on a laptop is numbered lower than an external
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+ keyboard, and we assume that if there's an external, it's the one the
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+ user actually uses. If no keyboards are found, returns -1. */
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+signed char find_input_dev (void)
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+{
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+ DIR *dir;
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+ struct dirent *entry;
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+ int last_kbd = -1;
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+ char buf[PATH_MAX + 1];
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+
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+ dir = opendir(CLASS_DIR);
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+ if(!dir) {
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+ perror(CLASS_DIR);
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return -1;
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+ }
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- while (!feof (fp))
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- {
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- char *buff = NULL;
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- size_t len = 0;
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- short int number = -2;
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- getline (&buff, &len, fp);
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- sscanf (buff, "H: Handlers=kbd event%hu", &number);
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- free (buff);
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- if (number > -1)
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- {
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- have_evdev = number;
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- break;
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+ while( (entry = readdir(dir)) ) {
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+ sprintf(buf, "%s/%s", CLASS_DIR, entry->d_name);
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+ if(strncmp(entry->d_name, "event", 5) == 0) {
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+ int devno = atoi(entry->d_name + 5);
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+ if(is_keyboard(devno)) {
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+ fprintf(stderr, "event%d is a keyboard\n", devno);
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+ if(devno > last_kbd) last_kbd = devno;
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+ }
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}
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}
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+ closedir(dir);
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- fclose (fp);
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+ fprintf(stderr, "Autodetected keyboard: %s/event%d\n", DEV_DIR, last_kbd);
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- return have_evdev;
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+ return last_kbd;
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}
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