/*
- * udevinfo.c - fetches stored device information or sysfs attributes
- *
- * Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2004-2006 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
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
}
#endif
-static void print_all_attributes(const char *devpath)
+static void print_all_attributes(const char *devpath, const char *key)
{
char path[PATH_SIZE];
DIR *dir;
}
replace_untrusted_chars(value);
- printf(" SYSFS{%s}==\"%s\"\n", dent->d_name, value);
+ printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value);
}
}
printf("\n");
struct sysfs_device *dev;
printf("\n"
- "udevinfo starts with the device the node belongs to and then walks up the\n"
- "device chain, to print for every device found, all possibly useful attributes\n"
- "in the udev key format.\n"
- "Only attributes within one device section may be used together in one rule,\n"
- "to match the device for which the node will be created.\n"
+ "Udevinfo starts with the device specified by the devpath and then\n"
+ "walks up the chain of parent devices. It prints for every device\n"
+ "found, all possible attributes in the udev rules key format.\n"
+ "A rule to match, can be composed by the attributes of the device\n"
+ "and the attributes from one single parent device.\n"
"\n");
dev = sysfs_device_get(devpath);
return -1;
printf(" looking at device '%s':\n", dev->devpath);
- printf(" KERNEL==\"%s\"\n", dev->kernel_name);
+ printf(" KERNEL==\"%s\"\n", dev->kernel);
printf(" SUBSYSTEM==\"%s\"\n", dev->subsystem);
- print_all_attributes(dev->devpath);
+ printf(" DRIVER==\"%s\"\n", dev->driver);
+ print_all_attributes(dev->devpath, "ATTR");
/* walk up the chain of devices */
while (1) {
dev = sysfs_device_get_parent(dev);
if (dev == NULL)
break;
- printf(" looking at device '%s':\n", dev->devpath);
- printf(" ID==\"%s\"\n", dev->kernel_name);
- printf(" BUS==\"%s\"\n", dev->subsystem);
- printf(" DRIVER==\"%s\"\n", dev->driver);
+ printf(" looking at parent device '%s':\n", dev->devpath);
+ printf(" KERNELS==\"%s\"\n", dev->kernel);
+ printf(" SUBSYTEMS==\"%s\"\n", dev->subsystem);
+ printf(" DRIVERS==\"%s\"\n", dev->driver);
- print_all_attributes(dev->devpath);
+ print_all_attributes(dev->devpath, "ATTRS");
}
return 0;
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[] = "aden:p:q:rVh";
int option;
struct udevice *udev;
int root = 0;
char path[PATH_SIZE] = "";
char name[PATH_SIZE] = "";
- char temp[PATH_SIZE];
struct name_entry *name_loop;
- char *pos;
int rc = 0;
logging_init("udevinfo");
-
udev_config_init();
sysfs_init();
}
/* get command line options */
+ opterr = 0;
while (1) {
- option = getopt(argc, argv, short_options);
+ option = getopt(argc, argv, ":aden:p:q:rVh");
if (option == -1)
break;
dbg("option '%c'", option);
switch (option) {
case 'n':
- dbg("udev name: %s\n", optarg);
- strlcpy(name, optarg, sizeof(name));
+ /* remove /dev if given */
+ if (strncmp(optarg, udev_root, strlen(udev_root)) == 0)
+ strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name));
+ else
+ strlcpy(name, optarg, sizeof(name));
+ dbg("name: %s\n", name);
break;
case 'p':
- dbg("udev path: %s\n", optarg);
- /* remove sysfs mountpoint if not given */
+ /* remove /sys if given */
if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0)
strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path));
else
strlcpy(path, optarg, sizeof(path));
+ dbg("path: %s\n", path);
break;
case 'q':
dbg("udev query: %s\n", optarg);
printf("udevinfo, version %s\n", UDEV_VERSION);
goto exit;
case 'h':
+ printf("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");
+ goto exit;
+ case ':':
+ fprintf(stderr, "missing argument for '%c'\n", optopt);
+ goto exit;
case '?':
default:
- print_help();
+ fprintf(stderr, "unrecognized option '%c'\n", optopt);
goto exit;
}
}
/* run action */
switch (action) {
case ACTION_QUERY:
- /* need devpath or node/symlink name for query */
+ /* needs 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) {
- pos = path + strlen(sysfs_path);
- } else {
- if (path[0] != '/') {
- /* prepend '/' if missing */
- strcpy(temp, "/");
- strlcpy(temp, path, sizeof(temp));
- pos = temp;
- } else {
- pos = path;
- }
- }
- if (udev_db_get_device(udev, pos) != 0) {
- fprintf(stderr, "no record for '%s' in database\n", pos);
+ if (udev_db_get_device(udev, path) != 0) {
+ fprintf(stderr, "no record for '%s' in database\n", path);
rc = 3;
goto exit;
}
} else if (name[0] != '\0') {
char devpath[PATH_SIZE];
- int len;
-
- /* remove udev_root if given */
- len = strlen(udev_root);
- if (strncmp(name, udev_root, len) == 0) {
- pos = &name[len+1];
- } else
- pos = name;
- if (udev_db_lookup_name(pos, devpath, sizeof(devpath)) != 0) {
- fprintf(stderr, "no record for '%s' in database\n", pos);
- rc = 3;
+ if (udev_db_lookup_name(name, devpath, sizeof(devpath)) != 0) {
+ fprintf(stderr, "node name not found\n");
+ rc = 4;
goto exit;
}
udev_db_get_device(udev, devpath);
print_record(udev);
break;
default:
- print_help();
+ fprintf(stderr, "unknown query type\n");
break;
}
break;
case ACTION_ATTRIBUTE_WALK:
- if (path[0] == '\0') {
- fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n");
- rc = 4;
- goto exit;
- } else
+ if (path[0] != '\0') {
print_device_chain(path);
+ } else if (name[0] != '\0') {
+ char devpath[PATH_SIZE];
+
+ if (udev_db_lookup_name(name, devpath, sizeof(devpath)) != 0) {
+ fprintf(stderr, "node name not found\n");
+ rc = 4;
+ goto exit;
+ }
+ print_device_chain(devpath);
+ } else {
+ fprintf(stderr, "attribute walk needs device path(-p) or node name(-n) specified\n");
+ rc = 5;
+ goto exit;
+ }
break;
case ACTION_ROOT:
printf("%s\n", udev_root);
break;
default:
- print_help();
+ fprintf(stderr, "missing option\n");
rc = 1;
break;
}
~ianmdlvl / elogind.git / blobdiff