/*
- * 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"
-
-#ifdef USE_LOG
-void log_message (int priority, const char *format, ...)
-{
- va_list args;
-
- if (priority > udev_log_priority)
- return;
-
- va_start(args, format);
- vsyslog(priority, format, args);
- va_end(args);
-}
-#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;
+
+ if (strcmp(dent->d_name, "uevent") == 0)
+ continue;
+ if (strcmp(dent->d_name, "dev") == 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;
len = strlcpy(value, attr_value, sizeof(value));
- dbg("attr '%s'='%s'(%zi)", dent->d_name, value, len);
+ if(len >= sizeof(value))
+ len = sizeof(value) - 1;
+ dbg("attr '%s'='%s'(%zi)\n", dent->d_name, value, len);
/* remove trailing newlines */
while (len && value[len-1] == '\n')
while (len && isprint(value[len-1]))
len--;
if (len) {
- dbg("attribute value of '%s' non-printable, skip", dent->d_name);
+ dbg("attribute value of '%s' non-printable, skip\n", dent->d_name);
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;
printf("N: %s\n", udev->name);
list_for_each_entry(name_loop, &udev->symlink_list, node)
printf("S: %s\n", name_loop->name);
+ if (udev->link_priority != 0)
+ printf("L: %i\n", udev->link_priority);
+ if (udev->partitions != 0)
+ printf("A:%u\n", udev->partitions);
+ if (udev->ignore_remove)
+ printf("R:%u\n", udev->ignore_remove);
list_for_each_entry(name_loop, &udev->env_list, node)
printf("E: %s\n", name_loop->name);
}
-static void export_name_devpath(struct udevice *udev) {
- printf("%s=%s/%s\n", udev->dev->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)) {
+static void export_db(void) {
LIST_HEAD(name_list);
struct name_entry *name_loop;
list_for_each_entry(name_loop, &name_list, node) {
struct udevice *udev_db;
- udev_db = udev_device_init();
+ udev_db = udev_device_init(NULL);
if (udev_db == NULL)
continue;
if (udev_db_get_device(udev_db, name_loop->name) == 0)
- fnct(udev_db);
+ print_record(udev_db);
+ printf("\n");
udev_device_cleanup(udev_db);
}
name_list_cleanup(&name_list);
}
-static void print_help(void)
+static int lookup_device_by_name(struct udevice *udev, const char *name)
{
- 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");
+ LIST_HEAD(name_list);
+ int count;
+ struct name_entry *device;
+ int rc = -1;
+
+ count = udev_db_get_devices_by_name(name, &name_list);
+ if (count <= 0)
+ goto out;
+
+ info("found %i devices for '%s'\n", count, name);
+
+ /* select the device that seems to match */
+ list_for_each_entry(device, &name_list, node) {
+ char filename[PATH_SIZE];
+ struct stat statbuf;
+
+ udev_device_init(udev);
+ if (udev_db_get_device(udev, device->name) != 0)
+ continue;
+ info("found db entry '%s'\n", device->name);
+
+ /* make sure, we don't get a link of a differnt device */
+ strlcpy(filename, udev_root, sizeof(filename));
+ strlcat(filename, "/", sizeof(filename));
+ strlcat(filename, name, sizeof(filename));
+ if (stat(filename, &statbuf) != 0)
+ continue;
+ if (major(udev->devt) > 0 && udev->devt != statbuf.st_rdev) {
+ info("skip '%s', dev_t doesn't match\n", udev->name);
+ continue;
+ }
+ rc = 0;
+ break;
+ }
+out:
+ name_list_cleanup(&name_list);
+ return rc;
}
-int main(int argc, char *argv[], char *envp[])
+static int stat_device(const char *name)
+{
+ struct stat statbuf;
+
+ if (stat(name, &statbuf) != 0)
+ return -1;
+
+ printf("%d %d\n", major(statbuf.st_dev), minor(statbuf.st_dev));
+ return 0;
+}
+
+int udevinfo(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' },
+ { "device-id-of-file", 1, NULL, 'd' },
+ { "version", 0, NULL, 1 }, /* -V outputs braindead format */
+ { "help", 0, NULL, 'h' },
+ {}
+ };
+
enum action_type {
ACTION_NONE,
ACTION_QUERY,
ACTION_ATTRIBUTE_WALK,
ACTION_ROOT,
+ ACTION_DEVICE_ID_FILE,
} action = ACTION_NONE;
enum query_type {
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();
- udev = udev_device_init();
+ udev = udev_device_init(NULL);
if (udev == NULL) {
rc = 1;
goto exit;
}
- /* get command line options */
while (1) {
- option = getopt(argc, argv, short_options);
+ option = getopt_long(argc, argv, "aed:n:p:q:rVh", options, NULL);
if (option == -1)
break;
- dbg("option '%c'", option);
+ dbg("option '%c'\n", 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));
+ remove_trailing_chars(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));
+ remove_trailing_chars(path, '/');
+
+ /* possibly resolve to real devpath */
+ if (sysfs_resolve_link(path, sizeof(path)) != 0) {
+ char temp[PATH_SIZE];
+ char *pos;
+
+ /* also check if the parent is a link */
+ strlcpy(temp, path, sizeof(temp));
+ pos = strrchr(temp, '/');
+ if (pos != 0) {
+ char tail[PATH_SIZE];
+
+ strlcpy(tail, pos, sizeof(tail));
+ pos[0] = '\0';
+ if (sysfs_resolve_link(temp, sizeof(temp)) == 0) {
+ strlcpy(path, temp, sizeof(path));
+ strlcat(path, tail, sizeof(path));
+ }
+ }
+ }
+ dbg("path: %s\n", path);
break;
case 'q':
- dbg("udev query: %s\n", optarg);
action = ACTION_QUERY;
if (strcmp(optarg, "name") == 0) {
query = QUERY_NAME;
action = ACTION_ROOT;
root = 1;
break;
+ case 'd':
+ action = ACTION_DEVICE_ID_FILE;
+ strlcpy(name, optarg, sizeof(name));
+ break;
case 'a':
action = ACTION_ATTRIBUTE_WALK;
break;
- case 'd':
- export_db(export_name_devpath);
- goto exit;
case 'e':
- export_db(export_record);
+ export_db();
+ goto exit;
+ case 1:
+ printf("%s\n", UDEV_VERSION);
goto exit;
case 'V':
printf("udevinfo, version %s\n", UDEV_VERSION);
goto exit;
case 'h':
- case '?':
+ printf("Usage: udevadm info 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"
+ " --path=<devpath> sysfs device path used for query or chain\n"
+ " --name=<name> node or symlink name used for query\n"
+ " --root prepend to query result or print udev_root\n"
+ " --attribute-walk print all key matches while walking along chain\n"
+ " of parent devices\n"
+ " --device-id-of-file=<file> print major/minor of underlying device\n"
+ " --export-db export the content of the udev database\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 (lookup_device_by_name(udev, name) != 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;
}
printf("%s\n", udev->name);
break;
case QUERY_SYMLINK:
- if (list_empty(&udev->symlink_list))
- goto exit;
- if (root)
- list_for_each_entry(name_loop, &udev->symlink_list, node)
- printf("%s/%s ", udev_root, name_loop->name);
- else
- list_for_each_entry(name_loop, &udev->symlink_list, node)
- printf("%s ", name_loop->name);
- printf("\n");
+ list_for_each_entry(name_loop, &udev->symlink_list, node) {
+ char c = name_loop->node.next != &udev->symlink_list ? ' ' : '\n';
+
+ if (root)
+ printf("%s/%s%c", udev_root, name_loop->name, c);
+ else
+ printf("%s%c", name_loop->name, c);
+ }
break;
case QUERY_PATH:
printf("%s\n", udev->dev->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;
+ if (path[0] != '\0') {
+ if (print_device_chain(path) != 0) {
+ fprintf(stderr, "no valid sysfs device found\n");
+ rc = 4;
+ goto exit;
+ }
+ } else if (name[0] != '\0') {
+ if (lookup_device_by_name(udev, name) != 0) {
+ fprintf(stderr, "node name not found\n");
+ rc = 4;
+ goto exit;
+ }
+ if (print_device_chain(udev->dev->devpath) != 0) {
+ fprintf(stderr, "no valid sysfs device found\n");
+ rc = 4;
+ goto exit;
+ }
+ } else {
+ fprintf(stderr, "attribute walk needs --path or node --name specified\n");
+ rc = 5;
goto exit;
- } else
- print_device_chain(path);
+ }
+ break;
+ case ACTION_DEVICE_ID_FILE:
+ if (stat_device(name) != 0)
+ rc = 6;
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