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-rw-r--r--udev/udev-builtin-hwdb.c252
-rw-r--r--udev/udev-builtin.c2
-rw-r--r--udev/udev.h4
3 files changed, 258 insertions, 0 deletions
diff --git a/udev/udev-builtin-hwdb.c b/udev/udev-builtin-hwdb.c
new file mode 100644
index 0000000000..e38c6b9d26
--- /dev/null
+++ b/udev/udev-builtin-hwdb.c
@@ -0,0 +1,252 @@
+/*
+ * usb-db, pci-db - lookup vendor/product database
+ *
+ * Copyright (C) 2009 Lennart Poettering <lennart@poettering.net>
+ * Copyright (C) 2011 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <inttypes.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+#include "udev.h"
+
+static int get_id_attr(
+ struct udev_device *parent,
+ const char *name,
+ uint16_t *value) {
+
+ const char *t;
+ unsigned u;
+
+ if (!(t = udev_device_get_sysattr_value(parent, name))) {
+ fprintf(stderr, "%s lacks %s.\n", udev_device_get_syspath(parent), name);
+ return -1;
+ }
+
+ if (!strncmp(t, "0x", 2))
+ t += 2;
+
+ if (sscanf(t, "%04x", &u) != 1 || u > 0xFFFFU) {
+ fprintf(stderr, "Failed to parse %s on %s.\n", name, udev_device_get_syspath(parent));
+ return -1;
+ }
+
+ *value = (uint16_t) u;
+ return 0;
+}
+
+static int get_vid_pid(
+ struct udev_device *parent,
+ const char *vendor_attr,
+ const char *product_attr,
+ uint16_t *vid,
+ uint16_t *pid) {
+
+ if (get_id_attr(parent, vendor_attr, vid) < 0)
+ return -1;
+ else if (*vid <= 0) {
+ fprintf(stderr, "Invalid vendor id.\n");
+ return -1;
+ }
+
+ if (get_id_attr(parent, product_attr, pid) < 0)
+ return -1;
+
+ return 0;
+}
+
+static void rstrip(char *n) {
+ size_t i;
+
+ for (i = strlen(n); i > 0 && isspace(n[i-1]); i--)
+ n[i-1] = 0;
+}
+
+#define HEXCHARS "0123456789abcdefABCDEF"
+#define WHITESPACE " \t\n\r"
+static int lookup_vid_pid(const char *database,
+ uint16_t vid, uint16_t pid,
+ char **vendor, char **product)
+{
+
+ FILE *f;
+ int ret = -1;
+ int found_vendor = 0;
+ char *line = NULL;
+
+ *vendor = *product = NULL;
+
+ if (!(f = fopen(database, "rme"))) {
+ fprintf(stderr, "Failed to open database file '%s': %s\n", database, strerror(errno));
+ return -1;
+ }
+
+ for (;;) {
+ size_t n;
+
+ if (line) {
+ free(line);
+ line = NULL;
+ }
+
+ if (getline(&line, &n, f) < 0)
+ break;
+
+ rstrip(line);
+
+ if (line[0] == '#' || line[0] == 0)
+ continue;
+
+ if (strspn(line, HEXCHARS) == 4) {
+ unsigned u;
+
+ if (found_vendor)
+ break;
+
+ if (sscanf(line, "%04x", &u) == 1 && u == vid) {
+ char *t;
+
+ t = line+4;
+ t += strspn(t, WHITESPACE);
+
+ if (!(*vendor = strdup(t))) {
+ fprintf(stderr, "Out of memory.\n");
+ goto finish;
+ }
+
+ found_vendor = 1;
+ }
+
+ continue;
+ }
+
+ if (found_vendor && line[0] == '\t' && strspn(line+1, HEXCHARS) == 4) {
+ unsigned u;
+
+ if (sscanf(line+1, "%04x", &u) == 1 && u == pid) {
+ char *t;
+
+ t = line+5;
+ t += strspn(t, WHITESPACE);
+
+ if (!(*product = strdup(t))) {
+ fprintf(stderr, "Out of memory.\n");
+ goto finish;
+ }
+
+ break;
+ }
+ }
+ }
+
+ ret = 0;
+
+finish:
+ free(line);
+ fclose(f);
+
+ if (ret < 0) {
+ free(*product);
+ free(*vendor);
+
+ *product = *vendor = NULL;
+ }
+
+ return ret;
+}
+
+static struct udev_device *find_device(struct udev_device *dev, const char *subsys, const char *devtype)
+{
+ const char *str;
+
+ str = udev_device_get_subsystem(dev);
+ if (str == NULL)
+ goto try_parent;
+ if (strcmp(str, subsys) != 0)
+ goto try_parent;
+
+ if (devtype != NULL) {
+ str = udev_device_get_devtype(dev);
+ if (str == NULL)
+ goto try_parent;
+ if (strcmp(str, devtype) != 0)
+ goto try_parent;
+ }
+ return dev;
+try_parent:
+ return udev_device_get_parent_with_subsystem_devtype(dev, subsys, devtype);
+}
+
+
+static int builtin_db(struct udev_device *dev, bool test,
+ const char *database,
+ const char *vendor_attr, const char *product_attr,
+ const char *subsys, const char *devtype)
+{
+ struct udev_device *parent;
+ uint16_t vid = 0, pid = 0;
+ char *vendor = NULL, *product = NULL;
+
+ parent = find_device(dev, subsys, devtype);
+ if (!parent) {
+ fprintf(stderr, "Failed to find device.\n");
+ goto finish;
+ }
+
+ if (get_vid_pid(parent, vendor_attr, product_attr, &vid, &pid) < 0)
+ goto finish;
+
+ if (lookup_vid_pid(database, vid, pid, &vendor, &product) < 0)
+ goto finish;
+
+ if (vendor)
+ udev_builtin_add_property(dev, test, "ID_VENDOR_FROM_DATABASE", vendor);
+ if (product)
+ udev_builtin_add_property(dev, test, "ID_MODEL_FROM_DATABASE", product);
+
+finish:
+ free(vendor);
+ free(product);
+ return 0;
+}
+
+static int builtin_usb_db(struct udev_device *dev, int argc, char *argv[], bool test)
+{
+ return builtin_db(dev, test, USB_DATABASE, "idVendor", "idProduct", "usb", "usb_device");
+}
+
+static int builtin_pci_db(struct udev_device *dev, int argc, char *argv[], bool test)
+{
+ return builtin_db(dev, test, PCI_DATABASE, "vendor", "device", "pci", NULL);
+}
+
+const struct udev_builtin udev_builtin_usb_db = {
+ .name = "usb-db",
+ .cmd = builtin_usb_db,
+ .help = "USB vendor/product database",
+ .run_once = true,
+};
+
+const struct udev_builtin udev_builtin_pci_db = {
+ .name = "pci-db",
+ .cmd = builtin_pci_db,
+ .help = "PCI vendor/product database",
+ .run_once = true,
+};
diff --git a/udev/udev-builtin.c b/udev/udev-builtin.c
index 9804c50fae..8beac8a678 100644
--- a/udev/udev-builtin.c
+++ b/udev/udev-builtin.c
@@ -31,6 +31,8 @@ static const struct udev_builtin *builtins[] = {
[UDEV_BUILTIN_INPUT_ID] = &udev_builtin_input_id,
[UDEV_BUILTIN_KMOD] = &udev_builtin_kmod,
[UDEV_BUILTIN_PATH_ID] = &udev_builtin_path_id,
+ [UDEV_BUILTIN_PCI_DB] = &udev_builtin_pci_db,
+ [UDEV_BUILTIN_USB_DB] = &udev_builtin_usb_db,
[UDEV_BUILTIN_USB_ID] = &udev_builtin_usb_id,
};
diff --git a/udev/udev.h b/udev/udev.h
index a289f35c4d..4f2886c69c 100644
--- a/udev/udev.h
+++ b/udev/udev.h
@@ -138,6 +138,8 @@ enum udev_builtin_cmd {
UDEV_BUILTIN_INPUT_ID,
UDEV_BUILTIN_KMOD,
UDEV_BUILTIN_PATH_ID,
+ UDEV_BUILTIN_PCI_DB,
+ UDEV_BUILTIN_USB_DB,
UDEV_BUILTIN_USB_ID,
UDEV_BUILTIN_MAX
};
@@ -155,6 +157,8 @@ extern const struct udev_builtin udev_builtin_firmware;
extern const struct udev_builtin udev_builtin_input_id;
extern const struct udev_builtin udev_builtin_kmod;
extern const struct udev_builtin udev_builtin_path_id;
+extern const struct udev_builtin udev_builtin_pci_db;
+extern const struct udev_builtin udev_builtin_usb_db;
extern const struct udev_builtin udev_builtin_usb_id;
int udev_builtin_init(struct udev *udev);
void udev_builtin_exit(struct udev *udev);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-19 18:45:48 +0000