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Diffstat (limited to 'udevinfo.c')
-rw-r--r--udevinfo.c156
1 files changed, 84 insertions, 72 deletions
diff --git a/udevinfo.c b/udevinfo.c
index c7d801b87c..0089df46b6 100644
--- a/udevinfo.c
+++ b/udevinfo.c
@@ -1,7 +1,7 @@
/*
- * udevinfo.c - 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
@@ -80,7 +80,7 @@ static void print_all_attributes(struct dlist *attr_list)
printf("\n");
}
-static int print_record(struct udevice *udev)
+static void print_record(struct udevice *udev)
{
struct name_entry *name_loop;
@@ -90,8 +90,6 @@ static int print_record(struct udevice *udev)
printf("S: %s\n", name_loop->name);
list_for_each_entry(name_loop, &udev->env_list, node)
printf("E: %s\n", name_loop->name);
-
- return 0;
}
static int print_device_chain(const char *path)
@@ -124,6 +122,7 @@ static int print_device_chain(const char *path)
/* 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);
@@ -167,7 +166,16 @@ exit:
return retval;
}
-static void dump_names(void) {
+static void dump_name_devpath(struct udevice *udev) {
+ printf("%s=%s/%s\n", udev->devpath, udev_root, udev->name);
+}
+
+static void dump_record(struct udevice *udev) {
+ print_record(udev);
+ printf("\n");
+}
+
+static void dump_db(void fnct(struct udevice *udev)) {
LIST_HEAD(name_list);
struct name_entry *name_loop;
@@ -177,19 +185,48 @@ static void dump_names(void) {
udev_init_device(&udev_db, NULL, NULL, NULL);
if (udev_db_get_device(&udev_db, name_loop->name) == 0)
- printf("%s=%s/%s\n", udev_db.devpath, udev_root, udev_db.name);
+ 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 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"
+ " -e print 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 action_type {
+ ACTION_NONE,
+ ACTION_QUERY,
+ ACTION_ATTRIBUTE_WALK,
+ ACTION_ROOT,
+ } action = ACTION_NONE;
+
enum query_type {
QUERY_NONE,
QUERY_NAME,
@@ -198,6 +235,7 @@ int main(int argc, char *argv[], char *envp[])
QUERY_ENV,
QUERY_ALL,
} query = QUERY_NONE;
+
char path[PATH_SIZE] = "";
char name[PATH_SIZE] = "";
char temp[PATH_SIZE];
@@ -222,70 +260,65 @@ int main(int argc, char *argv[], char *envp[])
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 = QUERY_NAME;
break;
}
-
if (strcmp(optarg, "symlink") == 0) {
query = QUERY_SYMLINK;
break;
}
-
if (strcmp(optarg, "path") == 0) {
query = QUERY_PATH;
break;
}
-
if (strcmp(optarg, "env") == 0) {
query = QUERY_ENV;
break;
}
-
if (strcmp(optarg, "all") == 0) {
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':
- dump_names();
+ dump_db(dump_name_devpath);
+ goto exit;
+ case 'e':
+ dump_db(dump_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 != 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) {
@@ -303,12 +336,10 @@ int main(int argc, char *argv[], char *envp[])
retval = udev_db_get_device(&udev, pos);
if (retval != 0) {
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;
@@ -322,24 +353,23 @@ int main(int argc, char *argv[], char *envp[])
retval = udev_db_lookup_name(pos, devpath, sizeof(devpath));
if (retval != 0) {
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 QUERY_NAME:
if (root)
printf("%s/%s\n", udev_root, udev.name);
else
printf("%s\n", udev.name);
- goto exit;
+ break;
case QUERY_SYMLINK:
if (list_empty(&udev.symlink_list))
goto exit;
@@ -350,23 +380,23 @@ print:
list_for_each_entry(name_loop, &udev.symlink_list, node)
printf("%s ", name_loop->name);
printf("\n");
- goto exit;
+ break;
case QUERY_PATH:
printf("%s\n", udev.devpath);
goto exit;
case QUERY_ENV:
list_for_each_entry(name_loop, &udev.env_list, node)
printf("%s\n", name_loop->name);
- goto exit;
+ 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;
@@ -379,35 +409,17 @@ print:
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"
- " '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 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();
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 22:39:54 +0000