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-rw-r--r--extras/input_id/input_id.c91
1 files changed, 70 insertions, 21 deletions
diff --git a/extras/input_id/input_id.c b/extras/input_id/input_id.c
index 588ff8992a..6df9ae423a 100644
--- a/extras/input_id/input_id.c
+++ b/extras/input_id/input_id.c
@@ -22,11 +22,13 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include <getopt.h>
#include <limits.h>
#include <linux/limits.h>
#include <linux/input.h>
#include "libudev.h"
+#include "libudev-private.h"
/* we must use this kernel-compatible implementation */
#define BITS_PER_LONG (sizeof(unsigned long) * 8)
@@ -37,7 +39,18 @@
#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)
static int debug = 0;
-#define DBG(format, args...) { if (debug) fprintf(stderr, format, ##args); }
+
+static void log_fn(struct udev *udev, int priority,
+ const char *file, int line, const char *fn,
+ const char *format, va_list args)
+{
+ if (debug) {
+ fprintf(stderr, "%s: ", fn);
+ vfprintf(stderr, format, args);
+ } else {
+ vsyslog(priority, format, args);
+ }
+}
/*
* Read a capability attribute and return bitmask.
@@ -55,7 +68,7 @@ static void get_cap_mask (struct udev_device *dev, const char* attr,
snprintf(text, sizeof(text), "%s", udev_device_get_sysattr_value(dev, attr));
- DBG("%s raw kernel attribute: %s\n", attr, text);
+ info(udev_device_get_udev(dev), "%s raw kernel attribute: %s\n", attr, text);
memset (bitmask, 0, bitmask_size);
i = 0;
@@ -64,7 +77,7 @@ static void get_cap_mask (struct udev_device *dev, const char* attr,
if (i < bitmask_size/sizeof(unsigned long))
bitmask[i] = val;
else
- DBG("Ignoring %s block %lX which is larger than maximum size\n", attr, val);
+ info(udev_device_get_udev(dev), "Ignoring %s block %lX which is larger than maximum size\n", attr, val);
*word = '\0';
++i;
}
@@ -72,18 +85,18 @@ static void get_cap_mask (struct udev_device *dev, const char* attr,
if (i < bitmask_size/sizeof(unsigned long))
bitmask[i] = val;
else
- DBG("Ignoring %s block %lX which is larger than maximum size\n", attr, val);
+ info(udev_device_get_udev(dev), "Ignoring %s block %lX which is larger than maximum size\n", attr, val);
if (debug) {
/* printf pattern with the right unsigned long number of hex chars */
snprintf(text, sizeof(text), " bit %%4u: %%0%zilX\n", 2*sizeof(unsigned long));
- DBG("%s decoded bit map:\n", attr);
+ info(udev_device_get_udev(dev), "%s decoded bit map:\n", attr);
val = bitmask_size/sizeof (unsigned long);
/* skip over leading zeros */
while (bitmask[val-1] == 0 && val > 0)
--val;
for (i = 0; i < val; ++i)
- DBG(text, i * BITS_PER_LONG, bitmask[i]);
+ info(udev_device_get_udev(dev), text, i * BITS_PER_LONG, bitmask[i]);
}
}
@@ -129,7 +142,8 @@ static void test_pointers (const unsigned long* bitmask_ev,
}
/* key like devices */
-static void test_key (const unsigned long* bitmask_ev,
+static void test_key (struct udev *udev,
+ const unsigned long* bitmask_ev,
const unsigned long* bitmask_key)
{
unsigned i;
@@ -138,7 +152,7 @@ static void test_key (const unsigned long* bitmask_ev,
/* do we have any KEY_* capability? */
if (!test_bit (EV_KEY, bitmask_ev)) {
- DBG("test_key: no EV_KEY capability\n");
+ info(udev, "test_key: no EV_KEY capability\n");
return;
}
@@ -146,13 +160,13 @@ static void test_key (const unsigned long* bitmask_ev,
found = 0;
for (i = 0; i < BTN_MISC/BITS_PER_LONG; ++i) {
found |= bitmask_key[i];
- DBG("test_key: checking bit block %lu for any keys; found=%i\n", i*BITS_PER_LONG, found > 0);
+ info(udev, "test_key: checking bit block %lu for any keys; found=%i\n", i*BITS_PER_LONG, found > 0);
}
/* If there are no keys in the lower block, check the higher block */
if (!found) {
for (i = KEY_OK; i < BTN_TRIGGER_HAPPY; ++i) {
if (test_bit (i, bitmask_key)) {
- DBG("test_key: Found key %x in high block\n", i);
+ info(udev, "test_key: Found key %x in high block\n", i);
found = 1;
break;
}
@@ -169,31 +183,66 @@ static void test_key (const unsigned long* bitmask_ev,
puts("ID_INPUT_KEYBOARD=1");
}
+static void help ()
+{
+ printf("Usage: input_id [options] <device path>\n"
+ " --debug debug to stderr\n"
+ " --help print this help text\n\n");
+}
+
int main (int argc, char** argv)
{
struct udev *udev;
struct udev_device *dev;
+ static const struct option options[] = {
+ { "debug", no_argument, NULL, 'd' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+ };
+
char devpath[PATH_MAX];
unsigned long bitmask_ev[NBITS(EV_MAX)];
unsigned long bitmask_abs[NBITS(ABS_MAX)];
unsigned long bitmask_key[NBITS(KEY_MAX)];
unsigned long bitmask_rel[NBITS(REL_MAX)];
- if (argc != 2) {
- fprintf(stderr, "Usage: %s <device path (without /sys)>\n", argv[0]);
- exit(1);
- }
-
- if (getenv ("DEBUG"))
- debug = 1;
-
- /* get the device */
udev = udev_new();
if (udev == NULL)
return 1;
- snprintf(devpath, sizeof(devpath), "%s/%s", udev_get_sys_path(udev), argv[1]);
+ udev_log_init("input_id");
+ udev_set_log_fn(udev, log_fn);
+
+ /* CLI argument parsing */
+ while (1) {
+ int option;
+
+ option = getopt_long(argc, argv, "dxh", options, NULL);
+ if (option == -1)
+ break;
+
+ switch (option) {
+ case 'd':
+ debug = 1;
+ if (udev_get_log_priority(udev) < LOG_INFO)
+ udev_set_log_priority(udev, LOG_INFO);
+ break;
+ case 'h':
+ help();
+ exit(0);
+ default:
+ exit(1);
+ }
+ }
+
+ if (argv[optind] == NULL) {
+ help();
+ exit(1);
+ }
+
+ /* get the device */
+ snprintf(devpath, sizeof(devpath), "%s/%s", udev_get_sys_path(udev), argv[optind]);
dev = udev_device_new_from_syspath(udev, devpath);
if (dev == NULL) {
fprintf(stderr, "unable to access '%s'\n", devpath);
@@ -220,7 +269,7 @@ int main (int argc, char** argv)
test_pointers(bitmask_ev, bitmask_abs, bitmask_key, bitmask_rel);
- test_key(bitmask_ev, bitmask_key);
+ test_key(udev, bitmask_ev, bitmask_key);
return 0;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-19 11:17:57 +0000