/*
- * 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.
*
*/
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/types.h>
#include "udev.h"
}
#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;
dir = opendir(path);
if (dir != NULL) {
for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ struct stat statbuf;
+ char filename[PATH_SIZE];
char *attr_value;
char value[NAME_SIZE];
size_t len;
+ if (dent->d_name[0] == '.')
+ continue;
+
+ strlcpy(filename, path, sizeof(filename));
+ strlcat(filename, "/", sizeof(filename));
+ strlcat(filename, dent->d_name, sizeof(filename));
+ if (lstat(filename, &statbuf) != 0)
+ continue;
+ if (S_ISLNK(statbuf.st_mode))
+ continue;
+
attr_value = sysfs_attr_get_value(devpath, dent->d_name);
if (attr_value == NULL)
continue;
}
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;
+ dev = sysfs_device_get(devpath);
+ if (dev == NULL)
+ return -1;
+
printf("\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"
"and the attributes from one single parent device.\n"
"\n");
- dev = sysfs_device_get(devpath);
- if (dev == NULL)
- 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);
printf(" DRIVER==\"%s\"\n", dev->driver);
- print_all_attributes(dev->devpath);
+ print_all_attributes(dev->devpath, "ATTR");
/* walk up the chain of devices */
while (1) {
if (dev == NULL)
break;
printf(" looking at parent 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(" KERNELS==\"%s\"\n", dev->kernel);
+ printf(" SUBSYSTEMS==\"%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;
+ static const struct option options[] = {
+ { "name", 1, NULL, 'n' },
+ { "path", 1, NULL, 'p' },
+ { "query", 1, NULL, 'q' },
+ { "attribute-walk", 0, NULL, 'a' },
+ { "export-db", 0, NULL, 'e' },
+ { "root", 0, NULL, 'r' },
+ { "version", 0, NULL, 'V' },
+ { "help", 0, NULL, 'h' },
+ {}
+ };
+
enum action_type {
ACTION_NONE,
ACTION_QUERY,
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 */
while (1) {
- option = getopt(argc, argv, short_options);
+ option = getopt_long(argc, argv, "aden:p:q:rVh", options, NULL);
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':
- case '?':
+ printf("Usage: udevinfo OPTIONS\n"
+ " --query=<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"
+ " --path=<devpath> sysfs device path used for query or chain\n"
+ " --name=<name> node or symlink name used for query\n"
+ "\n"
+ " --root prepend to query result or print udev_root\n"
+ " --attribute-walk print all SYSFS_attributes along the device chain\n"
+ " --export-db export the content of the udev database\n"
+ " --version print udev version\n"
+ " --help print this text\n"
+ "\n");
+ goto exit;
default:
- print_help();
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);
} else {
- fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n");
+ fprintf(stderr, "query needs --path or node --name specified\n");
rc = 4;
goto exit;
}
print_record(udev);
break;
default:
- print_help();
+ fprintf(stderr, "unknown query type\n");
break;
}
break;
case ACTION_ATTRIBUTE_WALK:
if (path[0] != '\0') {
- print_device_chain(path);
+ if (print_device_chain(path) != 0) {
+ fprintf(stderr, "device not found\n");
+ rc = 4;
+ goto exit;
+ }
} else if (name[0] != '\0') {
char devpath[PATH_SIZE];
rc = 4;
goto exit;
}
- print_device_chain(devpath);
+ if (print_device_chain(devpath) != 0) {
+ fprintf(stderr, "device not found\n");
+ rc = 4;
+ goto exit;
+ }
} else {
- fprintf(stderr, "attribute walk needs device path(-p) or node name(-n) specified\n");
+ fprintf(stderr, "attribute walk needs --path or node --name specified\n");
rc = 5;
goto exit;
}
printf("%s\n", udev_root);
break;
default:
- print_help();
+ fprintf(stderr, "missing option\n");
rc = 1;
break;
}