[thirdparty/systemd.git] / man / hwdb-usb-device.c

/* SPDX-License-Identifier: MIT-0 */

#include <stdio.h>
#include <stdint.h>
#include <sd-hwdb.h>

int print_usb_properties(uint16_t vid, uint16_t pid) {
  char match[STRLEN("usb:vp") + DECIMAL_STR_MAX(uint16_t) * 2];
  sd_hwdb *hwdb;
  const char *key, *value;
  int r;

  /* Match this USB vendor and product ID combination */
  xsprintf(match, "usb:v%04Xp%04X", vid, pid);

  r = sd_hwdb_new(&hwdb);
  if (r < 0)
    return r;

  SD_HWDB_FOREACH_PROPERTY(hwdb, match, key, value)
    printf("%s: \"%s\" → \"%s\"\n", match, key, value);

  sd_hwdb_unref(hwdb);
  return 0;
}

int main(int argc, char **argv) {
  print_usb_properties(0x046D, 0xC534);
  return 0;
}
Commit	Line	Data
1fe6d37e	1	/* SPDX-License-Identifier: MIT-0 */
f4d74c61	2
32c4d2ba ZJS	3	#include <stdio.h>
	4	#include <stdint.h>
	5	#include <sd-hwdb.h>
	6
	7	int print_usb_properties(uint16_t vid, uint16_t pid) {
e4193309	8	char match[STRLEN("usb:vp") + DECIMAL_STR_MAX(uint16_t) * 2];
32c4d2ba ZJS	9	sd_hwdb *hwdb;
	10	const char key, value;
	11	int r;
	12
	13	/* Match this USB vendor and product ID combination */
e4193309	14	xsprintf(match, "usb:v%04Xp%04X", vid, pid);
32c4d2ba ZJS	15
	16	r = sd_hwdb_new(&hwdb);
	17	if (r < 0)
	18	return r;
	19
	20	SD_HWDB_FOREACH_PROPERTY(hwdb, match, key, value)
	21	printf("%s: \"%s\" → \"%s\"\n", match, key, value);
	22
	23	sd_hwdb_unref(hwdb);
	24	return 0;
	25	}
	26
	27	int main(int argc, char **argv) {
	28	print_usb_properties(0x046D, 0xC534);
	29	return 0;
	30	}