#include <stdlib.h>
#include <string.h>
#include <stdio.h>
+#include <stddef.h>
#include <ctype.h>
#include <stdarg.h>
#include <unistd.h>
+#include <dirent.h>
#include <errno.h>
-#include "libsysfs/sysfs/libsysfs.h"
-#include "udev_libc_wrapper.h"
#include "udev.h"
-#include "udev_utils.h"
-#include "udev_version.h"
-#include "udev_db.h"
-#include "logging.h"
#ifdef USE_LOG
}
#endif
-static void print_all_attributes(struct dlist *attr_list)
+static void print_all_attributes(const char *devpath)
{
- struct sysfs_attribute *attr;
- char value[VALUE_SIZE];
- size_t len;
-
- dlist_for_each_data(attr_list, attr, struct sysfs_attribute) {
- if (attr->value == NULL)
- continue;
- len = strlcpy(value, attr->value, sizeof(value));
- if (len >= sizeof(value)) {
- dbg("attribute value of '%s' too long, skip", attr->name);
- continue;
- }
+ char path[PATH_SIZE];
+ DIR *dir;
+ struct dirent *dent;
+
+ strlcpy(path, sysfs_path, sizeof(path));
+ strlcat(path, devpath, sizeof(path));
+
+ dir = opendir(path);
+ if (dir != NULL) {
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ char *attr_value;
+ char value[NAME_SIZE];
+ size_t len;
+
+ 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);
+
+ /* remove trailing newlines */
+ while (len && value[len-1] == '\n')
+ value[--len] = '\0';
+
+ /* skip nonprintable attributes */
+ while (len && isprint(value[len-1]))
+ len--;
+ if (len) {
+ dbg("attribute value of '%s' non-printable, skip", dent->d_name);
+ continue;
+ }
- /* remove trailing newlines */
- while (len && value[len-1] == '\n')
- value[--len] = '\0';
- /* skip nonprintable attributes */
- while (len && isprint(value[len-1]))
- len--;
- if (len) {
- dbg("attribute value of '%s' non-printable, skip", attr->name);
- continue;
+ replace_untrusted_chars(value);
+ printf(" SYSFS{%s}==\"%s\"\n", dent->d_name, value);
}
- replace_untrusted_chars(value);
- printf(" SYSFS{%s}==\"%s\"\n", attr->name, value);
}
printf("\n");
}
-static void print_record(struct udevice *udev)
+static int print_device_chain(const char *devpath)
{
- struct name_entry *name_loop;
-
- printf("P: %s\n", udev->devpath);
- printf("N: %s\n", udev->name);
- list_for_each_entry(name_loop, &udev->symlink_list, node)
- printf("S: %s\n", name_loop->name);
- list_for_each_entry(name_loop, &udev->env_list, node)
- printf("E: %s\n", name_loop->name);
-}
+ struct sysfs_device *dev;
+
+ 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"
+ "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");
-static int print_device_chain(const char *path)
-{
- struct sysfs_class_device *class_dev;
- struct sysfs_class_device *class_dev_parent;
- struct sysfs_attribute *attr;
- struct sysfs_device *sysfs_dev;
- struct dlist *attr_list;
- int retval = 0;
-
- /* get the class dev */
- class_dev = sysfs_open_class_device_path(path);
- if (class_dev == NULL) {
- fprintf(stderr, "couldn't get the class device\n");
+ dev = sysfs_device_get(devpath);
+ if (dev == NULL)
return -1;
- }
- printf("\nudevinfo 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"
- "\n");
-
- /* look for the 'dev' file */
- attr = sysfs_get_classdev_attr(class_dev, "dev");
- if (attr != NULL)
- printf("device '%s' has major:minor %s", class_dev->path, attr->value);
+ printf(" looking at device '%s':\n", dev->devpath);
+ printf(" KERNEL==\"%s\"\n", dev->kernel_name);
+ printf(" SUBSYSTEM==\"%s\"\n", dev->subsystem);
+ print_all_attributes(dev->devpath);
- /* 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);
+ /* walk up the chain of devices */
+ while (1) {
+ dev = sysfs_device_get_parent(dev);
+ 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);
- attr_list = sysfs_get_classdev_attributes(class_dev);
- if (attr_list == NULL) {
- fprintf(stderr, "couldn't open class device directory\n");
- retval = -1;
- goto exit;
+ print_all_attributes(dev->devpath);
}
- print_all_attributes(attr_list);
-
- /* get the device link (if parent exists look here) */
- class_dev_parent = sysfs_get_classdev_parent(class_dev);
- if (class_dev_parent != NULL)
- sysfs_dev = sysfs_get_classdev_device(class_dev_parent);
- else
- sysfs_dev = sysfs_get_classdev_device(class_dev);
-
- if (sysfs_dev != NULL)
- printf("follow the \"device\"-link to the physical device:\n");
-
- /* look the device chain upwards */
- while (sysfs_dev != NULL) {
- printf(" looking at the device chain at '%s':\n", sysfs_dev->path);
- printf(" BUS==\"%s\"\n", sysfs_dev->bus);
- printf(" ID==\"%s\"\n", sysfs_dev->bus_id);
- printf(" DRIVER==\"%s\"\n", sysfs_dev->driver_name);
-
- attr_list = sysfs_get_device_attributes(sysfs_dev);
- if (attr_list != NULL)
- print_all_attributes(attr_list);
- else
- printf("\n");
- sysfs_dev = sysfs_get_device_parent(sysfs_dev);
- if (sysfs_dev == NULL)
- break;
- }
+ return 0;
+}
-exit:
- sysfs_close_class_device(class_dev);
- return retval;
+static void print_record(struct udevice *udev)
+{
+ struct name_entry *name_loop;
+
+ printf("P: %s\n", udev->dev->devpath);
+ printf("N: %s\n", udev->name);
+ list_for_each_entry(name_loop, &udev->symlink_list, node)
+ printf("S: %s\n", name_loop->name);
+ list_for_each_entry(name_loop, &udev->env_list, node)
+ printf("E: %s\n", name_loop->name);
}
-static void dump_name_devpath(struct udevice *udev) {
- printf("%s=%s/%s\n", udev->devpath, udev_root, udev->name);
+static void export_name_devpath(struct udevice *udev) {
+ printf("%s=%s/%s\n", udev->dev->devpath, udev_root, udev->name);
}
-static void dump_record(struct udevice *udev) {
+static void export_record(struct udevice *udev) {
print_record(udev);
printf("\n");
}
-static void dump_db(void fnct(struct udevice *udev)) {
+static void export_db(void fnct(struct udevice *udev)) {
LIST_HEAD(name_list);
struct name_entry *name_loop;
udev_db_get_all_entries(&name_list);
list_for_each_entry(name_loop, &name_list, node) {
- struct udevice udev_db;
+ struct udevice *udev_db;
- udev_init_device(&udev_db, NULL, NULL, NULL);
- if (udev_db_get_device(&udev_db, name_loop->name) == 0)
- fnct(&udev_db);
- udev_cleanup_device(&udev_db);
+ udev_db = udev_device_init();
+ if (udev_db == NULL)
+ continue;
+ if (udev_db_get_device(udev_db, name_loop->name) == 0)
+ fnct(udev_db);
+ udev_device_cleanup(udev_db);
}
name_list_cleanup(&name_list);
}
" -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"
+ " -r prepend to query result or 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"
+ " -e export the content of the udev database\n"
" -V print udev version\n"
" -h print this help text\n"
"\n");
{
static const char short_options[] = "aden:p:q:rVh";
int option;
- struct udevice udev;
+ struct udevice *udev;
int root = 0;
enum action_type {
char temp[PATH_SIZE];
struct name_entry *name_loop;
char *pos;
- int retval = 0;
+ int rc = 0;
logging_init("udevinfo");
- udev_init_config();
- udev_init_device(&udev, NULL, NULL, NULL);
+ udev_config_init();
+ sysfs_init();
+
+ udev = udev_device_init();
+ if (udev == NULL) {
+ rc = 1;
+ goto exit;
+ }
/* get command line options */
while (1) {
break;
case 'p':
dbg("udev path: %s\n", optarg);
- strlcpy(path, optarg, sizeof(path));
+ /* remove sysfs mountpoint if not given */
+ if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0)
+ strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path));
+ else
+ strlcpy(path, optarg, sizeof(path));
break;
case 'q':
dbg("udev query: %s\n", optarg);
break;
}
fprintf(stderr, "unknown query type\n");
- retval = 2;
+ rc = 2;
goto exit;
case 'r':
if (action == ACTION_NONE)
action = ACTION_ATTRIBUTE_WALK;
break;
case 'd':
- dump_db(dump_name_devpath);
+ export_db(export_name_devpath);
goto exit;
case 'e':
- dump_db(dump_record);
+ export_db(export_record);
goto exit;
case 'V':
printf("udevinfo, version %s\n", UDEV_VERSION);
pos = path;
}
}
- retval = udev_db_get_device(&udev, pos);
- if (retval != 0) {
+ if (udev_db_get_device(udev, pos) != 0) {
fprintf(stderr, "no record for '%s' in database\n", pos);
- retval = 3;
+ rc = 3;
goto exit;
}
} else if (name[0] != '\0') {
} else
pos = name;
- retval = udev_db_lookup_name(pos, devpath, sizeof(devpath));
- if (retval != 0) {
+ if (udev_db_lookup_name(pos, devpath, sizeof(devpath)) != 0) {
fprintf(stderr, "no record for '%s' in database\n", pos);
- retval = 3;
+ rc = 3;
goto exit;
}
- udev_db_get_device(&udev, devpath);
+ udev_db_get_device(udev, devpath);
} else {
fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n");
- retval = 4;
+ rc = 4;
goto exit;
}
switch(query) {
case QUERY_NAME:
if (root)
- printf("%s/%s\n", udev_root, udev.name);
+ printf("%s/%s\n", udev_root, udev->name);
else
- printf("%s\n", udev.name);
+ printf("%s\n", udev->name);
break;
case QUERY_SYMLINK:
- if (list_empty(&udev.symlink_list))
+ if (list_empty(&udev->symlink_list))
goto exit;
if (root)
- list_for_each_entry(name_loop, &udev.symlink_list, node)
+ 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)
+ list_for_each_entry(name_loop, &udev->symlink_list, node)
printf("%s ", name_loop->name);
printf("\n");
break;
case QUERY_PATH:
- printf("%s\n", udev.devpath);
+ printf("%s\n", udev->dev->devpath);
goto exit;
case QUERY_ENV:
- list_for_each_entry(name_loop, &udev.env_list, node)
+ list_for_each_entry(name_loop, &udev->env_list, node)
printf("%s\n", name_loop->name);
break;
case QUERY_ALL:
- print_record(&udev);
+ print_record(udev);
break;
default:
print_help();
case ACTION_ATTRIBUTE_WALK:
if (path[0] == '\0') {
fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n");
- retval = 4;
+ rc = 4;
goto exit;
- } else {
- if (strncmp(path, sysfs_path, strlen(sysfs_path)) != 0) {
- /* prepend sysfs mountpoint if not given */
- snprintf(temp, sizeof(temp), "%s%s", sysfs_path, path);
- temp[sizeof(temp)-1] = '\0';
- strlcpy(path, temp, sizeof(temp));
- }
+ } else
print_device_chain(path);
- }
break;
case ACTION_ROOT:
printf("%s\n", udev_root);
break;
default:
print_help();
- retval = 1;
+ rc = 1;
break;
}
exit:
- udev_cleanup_device(&udev);
+ udev_device_cleanup(udev);
+ sysfs_cleanup();
logging_close();
- return retval;
+ return rc;
}
~ianmdlvl / elogind.git / blobdiff