/***
This file is part of systemd.
- Copyright 2012 Kay Sievers <kay.sievers@vrfy.org>
+ Copyright 2012 Kay Sievers <kay@vrfy.org>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
#include <inttypes.h>
#include <ctype.h>
#include <stdlib.h>
+#include <fnmatch.h>
#include <getopt.h>
#include "udev.h"
static struct udev_hwdb *hwdb;
+int udev_builtin_hwdb_lookup(struct udev_device *dev,
+ const char *prefix, const char *modalias,
+ const char *filter, bool test) {
+ struct udev_list_entry *list;
+ struct udev_list_entry *entry;
+ int n = 0;
+
+ if (!hwdb)
+ return -ENOENT;
+
+ if (prefix) {
+ _cleanup_free_ const char *lookup;
+
+ lookup = strjoin(prefix, modalias, NULL);
+ if (!lookup)
+ return -ENOMEM;
+ list = udev_hwdb_get_properties_list_entry(hwdb, lookup, 0);
+ } else
+ list = udev_hwdb_get_properties_list_entry(hwdb, modalias, 0);
+
+ udev_list_entry_foreach(entry, list) {
+ if (filter && fnmatch(filter, udev_list_entry_get_name(entry), FNM_NOESCAPE) != 0)
+ continue;
+
+ if (udev_builtin_add_property(dev, test,
+ udev_list_entry_get_name(entry),
+ udev_list_entry_get_value(entry)) < 0)
+ return -ENOMEM;
+ n++;
+ }
+ return n;
+}
+
+static const char *modalias_usb(struct udev_device *dev, char *s, size_t size) {
+ const char *v, *p;
+ int vn, pn;
+
+ v = udev_device_get_sysattr_value(dev, "idVendor");
+ if (!v)
+ return NULL;
+ p = udev_device_get_sysattr_value(dev, "idProduct");
+ if (!p)
+ return NULL;
+ vn = strtol(v, NULL, 16);
+ if (vn <= 0)
+ return NULL;
+ pn = strtol(p, NULL, 16);
+ if (pn <= 0)
+ return NULL;
+ snprintf(s, size, "usb:v%04Xp%04X*", vn, pn);
+ return s;
+}
+
+static int udev_builtin_hwdb_search(struct udev_device *dev, struct udev_device *srcdev,
+ const char *subsystem, const char *prefix,
+ const char *filter, bool test) {
+ struct udev_device *d;
+ char s[16];
+ int n = 0;
+
+ for (d = srcdev; d; d = udev_device_get_parent(d)) {
+ const char *dsubsys;
+ const char *modalias = NULL;
+
+ dsubsys = udev_device_get_subsystem(d);
+ if (!dsubsys)
+ continue;
+
+ /* look only at devices of a specific subsystem */
+ if (subsystem && !streq(dsubsys, subsystem))
+ continue;
+
+ /* the usb_device does not have a modalias, compose one */
+ if (streq(dsubsys, "usb"))
+ modalias = modalias_usb(d, s, sizeof(s));
+
+ if (!modalias)
+ modalias = udev_device_get_property_value(d, "MODALIAS");
+
+ if (!modalias)
+ continue;
+
+ n = udev_builtin_hwdb_lookup(dev, prefix, modalias, filter, test);
+ if (n > 0)
+ break;
+ }
+
+ return n;
+}
+
static int builtin_hwdb(struct udev_device *dev, int argc, char *argv[], bool test) {
static const struct option options[] = {
+ { "filter", required_argument, NULL, 'f' },
+ { "device", required_argument, NULL, 'd' },
{ "subsystem", required_argument, NULL, 's' },
+ { "lookup-prefix", required_argument, NULL, 'p' },
{}
};
- const char *subsys = NULL;
- struct udev_device *d;
- const char *modalias;
- char str[UTIL_NAME_SIZE];
- struct udev_list_entry *entry;
+ const char *filter = NULL;
+ const char *device = NULL;
+ const char *subsystem = NULL;
+ const char *prefix = NULL;
+ struct udev_device *srcdev;
if (!hwdb)
return EXIT_FAILURE;
for (;;) {
int option;
- option = getopt_long(argc, argv, "s", options, NULL);
+ option = getopt_long(argc, argv, "f:d:s:p:", options, NULL);
if (option == -1)
break;
switch (option) {
- case 's':
- subsys = optarg;
+ case 'f':
+ filter = optarg;
break;
- }
- }
-
- /* search the first parent device with a modalias */
- for (d = dev; d; d = udev_device_get_parent(d)) {
- const char *dsubsys = udev_device_get_subsystem(d);
- /* look only at devices of a specific subsystem */
- if (subsys && dsubsys && !streq(dsubsys, subsys))
- continue;
+ case 'd':
+ device = optarg;
+ break;
- modalias = udev_device_get_property_value(d, "MODALIAS");
- if (modalias)
+ case 's':
+ subsystem = optarg;
break;
- /* the usb_device does not have modalias, compose one */
- if (dsubsys && streq(dsubsys, "usb")) {
- const char *v, *p;
- int vn, pn;
-
- v = udev_device_get_sysattr_value(d, "idVendor");
- if (!v)
- continue;
- p = udev_device_get_sysattr_value(d, "idProduct");
- if (!p)
- continue;
- vn = strtol(v, NULL, 16);
- if (vn <= 0)
- continue;
- pn = strtol(p, NULL, 16);
- if (pn <= 0)
- continue;
- snprintf(str, sizeof(str), "usb:v%04Xp%04X*", vn, pn);
- modalias = str;
+ case 'p':
+ prefix = optarg;
break;
}
}
- if (!modalias)
+
+ /* query a specific key given as argument */
+ if (argv[optind]) {
+ if (udev_builtin_hwdb_lookup(dev, prefix, argv[optind], filter, test) > 0)
+ return EXIT_SUCCESS;
return EXIT_FAILURE;
+ }
- udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0))
- if (udev_builtin_add_property(dev, test,
- udev_list_entry_get_name(entry),
- udev_list_entry_get_value(entry)) < 0)
+ /* read data from another device than the device we will store the data */
+ if (device) {
+ srcdev = udev_device_new_from_device_id(udev_device_get_udev(dev), device);
+ if (!srcdev)
return EXIT_FAILURE;
+ } else
+ srcdev = dev;
+
+ if (udev_builtin_hwdb_search(dev, srcdev, subsystem, prefix, filter, test) < 0)
+ return EXIT_FAILURE;
return EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff