-
-/*
- * Input hotplugging interface - loading event handlers based on
- * device bitfields.
- */
-
-#ifdef CONFIG_HOTPLUG
-
-/*
- * Input hotplugging invokes what /proc/sys/kernel/hotplug says
- * (normally /sbin/hotplug) when input devices get added or removed.
- *
- * This invokes a user mode policy agent, typically helping to load driver
- * or other modules, configure the device, and more. Drivers can provide
- * a MODULE_DEVICE_TABLE to help with module loading subtasks.
- *
- */
-
-#define SPRINTF_BIT_A(bit, name, max) \
- do { \
- envp[i++] = scratch; \
- scratch += sprintf(scratch, name); \
- for (j = NBITS(max) - 1; j >= 0; j--) \
- if (dev->bit[j]) break; \
- for (; j >= 0; j--) \
- scratch += sprintf(scratch, "%lx ", dev->bit[j]); \
- scratch++; \
- } while (0)
-
-#define SPRINTF_BIT_A2(bit, name, max, ev) \
- do { \
- if (test_bit(ev, dev->evbit)) \
- SPRINTF_BIT_A(bit, name, max); \
- } while (0)
-
-static void input_call_hotplug(char *verb, struct input_dev *dev)
-{
- char *argv[3], **envp, *buf, *scratch;
- int i = 0, j, value;
-
- if (!hotplug_path[0]) {
- printk(KERN_ERR "input.c: calling hotplug without a hotplug agent defined\n");
- return;
- }
- if (in_interrupt()) {
- printk(KERN_ERR "input.c: calling hotplug from interrupt\n");
- return;
- }
- if (!current->fs->root) {
- printk(KERN_WARNING "input.c: calling hotplug without valid filesystem\n");
- return;
- }
- if (!(envp = (char **) kmalloc(20 * sizeof(char *), GFP_KERNEL))) {
- printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
- return;
- }
- if (!(buf = kmalloc(1024, GFP_KERNEL))) {
- kfree (envp);
- printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
- return;
- }
-
- argv[0] = hotplug_path;
- argv[1] = "input";
- argv[2] = NULL;
-
- envp[i++] = "HOME=/";
- envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-
- scratch = buf;
-
- envp[i++] = scratch;
- scratch += sprintf(scratch, "ACTION=%s", verb) + 1;
-
- envp[i++] = scratch;
- scratch += sprintf(scratch, "PRODUCT=%x/%x/%x/%x",
- dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version) + 1;
-
- if (dev->name) {
- envp[i++] = scratch;
- scratch += sprintf(scratch, "NAME=%s", dev->name) + 1;
- }
-
- if (dev->phys) {
- envp[i++] = scratch;
- scratch += sprintf(scratch, "PHYS=%s", dev->phys) + 1;
- }
-
- SPRINTF_BIT_A(evbit, "EV=", EV_MAX);
- SPRINTF_BIT_A2(keybit, "KEY=", KEY_MAX, EV_KEY);
- SPRINTF_BIT_A2(relbit, "REL=", REL_MAX, EV_REL);
- SPRINTF_BIT_A2(absbit, "ABS=", ABS_MAX, EV_ABS);
- SPRINTF_BIT_A2(mscbit, "MSC=", MSC_MAX, EV_MSC);
- SPRINTF_BIT_A2(ledbit, "LED=", LED_MAX, EV_LED);
- SPRINTF_BIT_A2(sndbit, "SND=", SND_MAX, EV_SND);
- SPRINTF_BIT_A2(ffbit, "FF=", FF_MAX, EV_FF);
- SPRINTF_BIT_A2(swbit, "SW=", SW_MAX, EV_SW);
-
- envp[i++] = NULL;
-
-#ifdef INPUT_DEBUG
- printk(KERN_DEBUG "input.c: calling %s %s [%s %s %s %s %s]\n",
- argv[0], argv[1], envp[0], envp[1], envp[2], envp[3], envp[4]);
-#endif
-
- value = call_usermodehelper(argv [0], argv, envp, 0);
-
- kfree(buf);
- kfree(envp);
-
-#ifdef INPUT_DEBUG
- if (value != 0)
- printk(KERN_DEBUG "input.c: hotplug returned %d\n", value);
-#endif
-}
-
-#endif
-
-static int input_print_bitmap(char *buf, unsigned long *bitmap, int max)