system/systemd
system/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd synced 2024-10-14 20:17:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

udevinfo: add database export

Browse source 
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This commit is contained in:
Kay Sievers 2005-08-29 15:01:08 +02:00
parent b581515ce8
commit 24ca5c3398
2 changed files with 87 additions and 72 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
udevinfo.8
View file

@ -51,6 +51,9 @@ unique attributes to compose a rule.
Print the relationship between the devpath and the node name for all devices
currently available in the database.
.TP
.B \-e
Print all attributes for all devices curently available in the database.
.TP
.B \-h
Print help text.
.SH "FILES"

156
udevinfo.c
View file

@ -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();