picnoir/Systemd
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

[PATCH] udevinfo: print devpath -> node relationship for all devices

Browse source
This commit is contained in:
kay.sievers@vrfy.org 2005-02-25 07:40:14 +01:00 committed by Greg KH
parent f8a178a35b
commit 9fe1a96d88
4 changed files with 52 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
udev_db.c
View file

@ -239,3 +239,38 @@ found:
return 0;
}
int udev_db_call_foreach(int (*handler_function)(struct udevice *udev))
{
struct dirent *ent;
DIR *dir;
char filename[NAME_SIZE];
struct udevice db_udev;
dir = opendir(udev_db_path);
if (dir == NULL) {
dbg("unable to udev db '%s'", udev_db_path);
return -1;
}
while (1) {
ent = readdir(dir);
if (ent == NULL || ent->d_name[0] == '\0')
break;
if (ent->d_name[0] == '.')
continue;
snprintf(filename, NAME_SIZE, "%s/%s", udev_db_path, ent->d_name);
filename[NAME_SIZE-1] = '\0';
memset(&db_udev, 0x00, sizeof(struct udevice));
if (parse_db_file(&db_udev, filename) == 0) {
if (handler_function(&db_udev) != 0)
break;
}
}
closedir(dir);
return 0;
}

1
udev_db.h
View file

@ -30,5 +30,6 @@ extern int udev_db_delete_device(struct udevice *dev);
extern int udev_db_get_device_by_devpath(struct udevice *dev, const char *devpath);
extern int udev_db_get_device_by_name(struct udevice *udev, const char *name);
extern int udev_db_call_foreach(int (*handler_function)(struct udevice *udev));
#endif /* _UDEV_DB_H_ */

4
udevinfo.8
View file

@ -47,6 +47,10 @@ attributes along the device chain. Useful for finding
unique attributes to compose a rule.
.RB Needs " \-p " specified.
.TP
.B \-d
Print the relationship between the devpath and the node name for all devices
currently available in the database.
.TP
.B \-h
Print help text.
.SH "FILES"

14
udevinfo.c
View file

@ -178,9 +178,14 @@ exit:
return retval;
}
static int print_dump(struct udevice *udev) {
printf("%s:%s/%s\n", udev->devpath, udev_root, udev->name);
return 0;
}
static int process_options(int argc, char *argv[])
{
static const char short_options[] = "an:p:q:rVh";
static const char short_options[] = "adn:p:q:rVh";
int option;
int retval = 1;
struct udevice udev;
@ -245,6 +250,10 @@ static int process_options(int argc, char *argv[])
attributes = 1;
break;
case 'd':
udev_db_call_foreach(print_dump);
exit(0);
case 'V':
printf("udevinfo, version %s\n", UDEV_VERSION);
exit(0);
@ -384,7 +393,8 @@ help:
"\n"
" -r print udev root\n"
" -a print all SYSFS_attributes along the device chain\n"
" -s print all sysfs devices with major/minor, physical device and bus\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");