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Walks
Eeze » main » udev

These are functions which walk up the device chain. More...

## Functions
EAPI Eina_Bool | eeze_udev_walk_check_sysattr (const char *syspath, const char *sysattr, const char *value)
| Walks up the device chain starting at `syspath`, checking each device for `sysattr` with (optional) `value`.
EAPI const char * | eeze_udev_walk_get_sysattr (const char *syspath, const char *sysattr)
| Walks up the device chain starting at `syspath`, checking each device for `sysattr`, and returns the value if found.

## Detailed Description

These are functions which walk up the device chain.

## Function Documentation

## ◆ eeze_udev_walk_check_sysattr()

EAPI Eina_Bool eeze_udev_walk_check_sysattr | ( | const char * | syspath,
|  | const char * | sysattr,
|  | const char * | value
| ) |  |

Walks up the device chain starting at `syspath`, checking each device for `sysattr` with (optional) `value`.

Parameters

  syspath | The /sys/ path of the device to start at, with or without the /sys/
  sysattr | The attribute to find
  value | OPTIONAL: The value that `sysattr` should have, or `NULL`

Returns
  If the sysattr (with value) is found, returns TRUE. Else, false.

References EINA_FALSE, and EINA_TRUE.

## ◆ eeze_udev_walk_get_sysattr()

EAPI const char * eeze_udev_walk_get_sysattr | ( | const char * | syspath,
|  | const char * | sysattr
| ) |  |

Walks up the device chain starting at `syspath`, checking each device for `sysattr`, and returns the value if found.

Parameters

  syspath | The /sys/ path of the device to start at, with or without the /sys/
  sysattr | The attribute to find

Returns
  The stringshared value of `sysattr` if found, or `NULL`

References eina_stringshare_add().