/*
- * udevinfo - fetches attributes for a device
+ * udevinfo.c - fetches stored device information or sysfs attributes
*
- * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2004-2005 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
#include "udev.h"
#include "udev_utils.h"
#include "udev_version.h"
-#include "udev_db.h"
#include "logging.h"
printf("\n");
}
-static int print_record(struct udevice *udev)
+static void print_record(struct udevice *udev)
{
struct name_entry *name_loop;
printf("N: %s\n", udev->name);
list_for_each_entry(name_loop, &udev->symlink_list, node)
printf("S: %s\n", name_loop->name);
-
- return 0;
+ list_for_each_entry(name_loop, &udev->env_list, node)
+ printf("E: %s\n", name_loop->name);
}
-enum query_type {
- NONE,
- NAME,
- PATH,
- SYMLINK,
- ALL,
-};
-
static int print_device_chain(const char *path)
{
struct sysfs_class_device *class_dev;
/* open sysfs class device directory and print all attributes */
printf(" looking at class device '%s':\n", class_dev->path);
+ printf(" KERNEL==\"%s\"\n", class_dev->name);
printf(" SUBSYSTEM==\"%s\"\n", class_dev->classname);
attr_list = sysfs_get_classdev_attributes(class_dev);
/* look the device chain upwards */
while (sysfs_dev != NULL) {
- attr_list = sysfs_get_device_attributes(sysfs_dev);
- if (attr_list == NULL) {
- fprintf(stderr, "couldn't open device directory\n");
- retval = -1;
- goto exit;
- }
-
printf(" looking at the device chain at '%s':\n", sysfs_dev->path);
printf(" BUS==\"%s\"\n", sysfs_dev->bus);
printf(" ID==\"%s\"\n", sysfs_dev->bus_id);
printf(" DRIVER==\"%s\"\n", sysfs_dev->driver_name);
- print_all_attributes(attr_list);
+ attr_list = sysfs_get_device_attributes(sysfs_dev);
+ if (attr_list != NULL)
+ print_all_attributes(attr_list);
+ else
+ printf("\n");
sysfs_dev = sysfs_get_device_parent(sysfs_dev);
if (sysfs_dev == NULL)
return retval;
}
-static int print_dump(const char *devpath, const char *name) {
- printf("%s=%s/%s\n", devpath, udev_root, name);
- return 0;
+static void export_name_devpath(struct udevice *udev) {
+ printf("%s=%s/%s\n", udev->devpath, udev_root, udev->name);
+}
+
+static void export_record(struct udevice *udev) {
+ print_record(udev);
+ printf("\n");
+}
+
+static void export_db(void fnct(struct udevice *udev)) {
+ LIST_HEAD(name_list);
+ struct name_entry *name_loop;
+
+ udev_db_get_all_entries(&name_list);
+ list_for_each_entry(name_loop, &name_list, node) {
+ struct udevice udev_db;
+
+ udev_init_device(&udev_db, NULL, NULL, NULL);
+ if (udev_db_get_device(&udev_db, name_loop->name) == 0)
+ fnct(&udev_db);
+ udev_cleanup_device(&udev_db);
+ }
+ name_list_cleanup(&name_list);
+}
+
+static void print_help(void)
+{
+ fprintf(stderr, "Usage: udevinfo [-anpqrVh]\n"
+ " -q TYPE query database for the specified value:\n"
+ " 'name' name of device node\n"
+ " 'symlink' pointing to node\n"
+ " 'path' sysfs device path\n"
+ " 'env' the device related imported environment\n"
+ " 'all' all values\n"
+ "\n"
+ " -p PATH sysfs device path used for query or chain\n"
+ " -n NAME node/symlink name used for query\n"
+ "\n"
+ " -r prepend to query result or print udev_root\n"
+ " -a print all SYSFS_attributes along the device chain\n"
+ " -e export the content of the udev database\n"
+ " -V print udev version\n"
+ " -h print this help text\n"
+ "\n");
}
int main(int argc, char *argv[], char *envp[])
{
- static const char short_options[] = "adn:p:q:rVh";
+ static const char short_options[] = "aden:p:q:rVh";
int option;
struct udevice udev;
int root = 0;
- int attributes = 0;
- enum query_type query = NONE;
+
+ enum action_type {
+ ACTION_NONE,
+ ACTION_QUERY,
+ ACTION_ATTRIBUTE_WALK,
+ ACTION_ROOT,
+ } action = ACTION_NONE;
+
+ enum query_type {
+ QUERY_NONE,
+ QUERY_NAME,
+ QUERY_PATH,
+ QUERY_SYMLINK,
+ QUERY_ENV,
+ QUERY_ALL,
+ } query = QUERY_NONE;
+
char path[PATH_SIZE] = "";
char name[PATH_SIZE] = "";
char temp[PATH_SIZE];
dbg("udev name: %s\n", optarg);
strlcpy(name, optarg, sizeof(name));
break;
-
case 'p':
dbg("udev path: %s\n", optarg);
strlcpy(path, optarg, sizeof(path));
break;
-
case 'q':
dbg("udev query: %s\n", optarg);
-
+ action = ACTION_QUERY;
if (strcmp(optarg, "name") == 0) {
- query = NAME;
+ query = QUERY_NAME;
break;
}
-
if (strcmp(optarg, "symlink") == 0) {
- query = SYMLINK;
+ query = QUERY_SYMLINK;
break;
}
-
if (strcmp(optarg, "path") == 0) {
- query = PATH;
+ query = QUERY_PATH;
+ break;
+ }
+ if (strcmp(optarg, "env") == 0) {
+ query = QUERY_ENV;
break;
}
-
if (strcmp(optarg, "all") == 0) {
- query = ALL;
+ query = QUERY_ALL;
break;
}
-
fprintf(stderr, "unknown query type\n");
- retval = 1;
+ retval = 2;
goto exit;
-
case 'r':
+ if (action == ACTION_NONE)
+ action = ACTION_ROOT;
root = 1;
break;
-
case 'a':
- attributes = 1;
+ action = ACTION_ATTRIBUTE_WALK;
break;
-
case 'd':
- udev_db_dump_names(print_dump);
+ export_db(export_name_devpath);
+ goto exit;
+ case 'e':
+ export_db(export_record);
goto exit;
-
case 'V':
printf("udevinfo, version %s\n", UDEV_VERSION);
goto exit;
-
case 'h':
- retval = 2;
case '?':
default:
- goto help;
+ print_help();
+ goto exit;
}
}
- /* process options */
- if (query != NONE) {
+ /* run action */
+ switch (action) {
+ case ACTION_QUERY:
+ /* need devpath or node/symlink name for query */
if (path[0] != '\0') {
/* remove sysfs_path if given */
if (strncmp(path, sysfs_path, strlen(sysfs_path)) == 0) {
}
retval = udev_db_get_device(&udev, pos);
if (retval != 0) {
- fprintf(stderr, "device not found in database\n");
+ fprintf(stderr, "no record for '%s' in database\n", pos);
+ retval = 3;
goto exit;
}
- goto print;
- }
-
- if (name[0] != '\0') {
+ } else if (name[0] != '\0') {
char devpath[PATH_SIZE];
int len;
} else
pos = name;
- retval = udev_db_search_name(devpath, sizeof(devpath), pos);
+ retval = udev_db_lookup_name(pos, devpath, sizeof(devpath));
if (retval != 0) {
- fprintf(stderr, "device not found in database\n");
+ fprintf(stderr, "no record for '%s' in database\n", pos);
+ retval = 3;
goto exit;
}
udev_db_get_device(&udev, devpath);
- goto print;
+ } else {
+ fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n");
+ retval = 4;
+ goto exit;
}
- fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n");
- retval = 3;
- goto exit;
-
-print:
switch(query) {
- case NAME:
+ case QUERY_NAME:
if (root)
printf("%s/%s\n", udev_root, udev.name);
else
printf("%s\n", udev.name);
- goto exit;
- case SYMLINK:
+ break;
+ case QUERY_SYMLINK:
if (list_empty(&udev.symlink_list))
- break;
+ goto exit;
if (root)
list_for_each_entry(name_loop, &udev.symlink_list, node)
printf("%s/%s ", udev_root, name_loop->name);
list_for_each_entry(name_loop, &udev.symlink_list, node)
printf("%s ", name_loop->name);
printf("\n");
- goto exit;
- case PATH:
+ break;
+ case QUERY_PATH:
printf("%s\n", udev.devpath);
goto exit;
- case ALL:
+ case QUERY_ENV:
+ list_for_each_entry(name_loop, &udev.env_list, node)
+ printf("%s\n", name_loop->name);
+ break;
+ case QUERY_ALL:
print_record(&udev);
- goto exit;
+ break;
default:
- goto help;
+ print_help();
+ break;
}
- }
-
- if (attributes) {
+ break;
+ case ACTION_ATTRIBUTE_WALK:
if (path[0] == '\0') {
fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n");
retval = 4;
strlcpy(path, temp, sizeof(temp));
}
print_device_chain(path);
- goto exit;
}
- }
-
- if (root) {
+ break;
+ case ACTION_ROOT:
printf("%s\n", udev_root);
- goto exit;
+ break;
+ default:
+ print_help();
+ retval = 1;
+ break;
}
-help:
- fprintf(stderr, "Usage: udevinfo [-anpqrVh]\n"
- " -q TYPE query database for the specified value:\n"
- " 'name' name of device node\n"
- " 'symlink' pointing to node\n"
- " 'path' sysfs device path\n"
- " 'all' all values\n"
- "\n"
- " -p PATH sysfs device path used for query or chain\n"
- " -n NAME node/symlink name used for query\n"
- "\n"
- " -r print udev root\n"
- " -a print all SYSFS_attributes along the device chain\n"
- " -d print the relationship of devpath and the node name for all\n"
- " devices available in the database\n"
- " -V print udev version\n"
- " -h print this help text\n"
- "\n");
-
exit:
udev_cleanup_device(&udev);
logging_close();