Eeze_Disk(3)

NAME
Eeze_Disk - Disk

 - Scan and query information about disks.

SYNOPSIS

  Data Structures
struct _Eeze_Event_Disk
struct _Eeze_Event_Disk_Error

  Typedefs
typedef struct _Eeze_Event_Disk Eeze_Event_Disk_Mount
typedef struct _Eeze_Event_Disk Eeze_Event_Disk_Unmount
typedef struct _Eeze_Event_Disk Eeze_Event_Disk_Eject
typedef struct _Eeze_Disk Eeze_Disk
typedef struct _Eeze_Event_Disk_Error Eeze_Event_Disk_Error

  Enumerations
enum Eeze_Disk_Type { EEZE_DISK_TYPE_UNKNOWN = 0, EEZE_DISK_TYPE_INTERNAL = (1 << 0), EEZE_DISK_TYPE_CDROM = (1 << 1), EEZE_DISK_TYPE_USB = (1 << 2), EEZE_DISK_TYPE_FLASH = (1 << 3) }
enum Eeze_Mount_Opts { EEZE_DISK_MOUNTOPT_LOOP = (1 << 1), EEZE_DISK_MOUNTOPT_UTF8 = (1 << 2), EEZE_DISK_MOUNTOPT_NOEXEC = (1 << 3), EEZE_DISK_MOUNTOPT_NOSUID = (1 << 4), EEZE_DISK_MOUNTOPT_REMOUNT = (1 << 5), EEZE_DISK_MOUNTOPT_UID = (1 << 6), EEZE_DISK_MOUNTOPT_NODEV = (1 << 7) }

  Functions
EAPI void eeze_disk_function (void)
Use this function to determine whether your eeze is disk-capable.
EAPI Eina_Bool eeze_disk_can_mount (void)
Return whether mount support is available in eeze.
EAPI Eina_Bool eeze_disk_can_unmount (void)
Return whether unmount support is available in eeze.
EAPI Eina_Bool eeze_disk_can_eject (void)
Return whether eject support is available in eeze.
EAPI Eeze_Disk * eeze_disk_new (const char *path)
Create a new disk object from a /sys/ path or /dev/ path.
EAPI Eeze_Disk * eeze_disk_new_from_mount (const char *mount_point)
Create a new disk object from a mount point.
EAPI void eeze_disk_free (Eeze_Disk *disk)
Frees a disk object.
EAPI void eeze_disk_scan (Eeze_Disk *disk)
Retrieve all disk information.
EAPI void eeze_disk_data_set (Eeze_Disk *disk, void *data)
Associate data with a disk.
EAPI void * eeze_disk_data_get (Eeze_Disk *disk)
Retrieve data previously associated with a disk.
EAPI const char * eeze_disk_syspath_get (Eeze_Disk *disk)
Return the /sys/ path of a disk.
EAPI const char * eeze_disk_devpath_get (Eeze_Disk *disk)
Return the /dev/ path of a disk.
EAPI const char * eeze_disk_fstype_get (Eeze_Disk *disk)
Return the filesystem of the disk (if known)
EAPI const char * eeze_disk_vendor_get (Eeze_Disk *disk)
Return the manufacturing vendor of the disk.
EAPI const char * eeze_disk_model_get (Eeze_Disk *disk)
Return the model of the disk.
EAPI const char * eeze_disk_serial_get (Eeze_Disk *disk)
Return the serial number of the disk.
EAPI const char * eeze_disk_uuid_get (Eeze_Disk *disk)
Return the UUID of the disk.
EAPI const char * eeze_disk_label_get (Eeze_Disk *disk)
Return the label of the disk.
EAPI Eeze_Disk_Type eeze_disk_type_get (Eeze_Disk *disk)
Return the Eeze_Disk_Type of the disk.
EAPI Eina_Bool eeze_disk_removable_get (Eeze_Disk *disk)
Return whether the disk is removable.
EAPI Eina_Bool eeze_disk_mounted_get (Eeze_Disk *disk)
Return the mount state of a disk.
EAPI const char * eeze_disk_mount_wrapper_get (Eeze_Disk *disk)
Get the previously set mount wrapper for a disk.
EAPI Eina_Bool eeze_disk_mount_wrapper_set (Eeze_Disk *disk, const char *wrapper)
Set a wrapper to run mount commands with.
EAPI Eina_Bool eeze_disk_mount (Eeze_Disk *disk)
Begin a mount operation on the disk.
EAPI Eina_Bool eeze_disk_unmount (Eeze_Disk *disk)
Begin an unmount operation on the disk.
EAPI Eina_Bool eeze_disk_eject (Eeze_Disk *disk)
Begin an eject operation on the disk.
EAPI void eeze_disk_cancel (Eeze_Disk *disk)
Cancel a pending operation on the disk.
EAPI const char * eeze_disk_mount_point_get (Eeze_Disk *disk)
Return the mount point of a disk.
EAPI Eina_Bool eeze_disk_mount_point_set (Eeze_Disk *disk, const char *mount_point)
Set the mount point of a disk.
EAPI Eina_Bool eeze_disk_mountopts_set (Eeze_Disk *disk, unsigned long opts)
Set the mount options using flags.
EAPI unsigned long eeze_disk_mountopts_get (Eeze_Disk *disk)
Get the flags of a disk's current mount options.
EAPI Eina_Bool eeze_mount_tabs_watch (void)
Begin watching mtab and fstab.
EAPI void eeze_mount_tabs_unwatch (void)
Stop watching /etc/fstab and /etc/mtab.
EAPI Eina_Bool eeze_mount_mtab_scan (void)
Scan /etc/mtab a single time.
EAPI Eina_Bool eeze_mount_fstab_scan (void)
Scan /etc/fstab a single time.
EAPI const char * eeze_disk_udev_get_property (Eeze_Disk *disk, const char *property)
Get the property value of a disk.
EAPI const char * eeze_disk_udev_get_sysattr (Eeze_Disk *disk, const char *sysattr)
Get the sysattr value of a disk.
EAPI const char * eeze_disk_udev_get_parent (Eeze_Disk *disk)
Find the root device of a disk.
EAPI Eina_Bool eeze_disk_udev_walk_check_sysattr (Eeze_Disk *disk, const char *sysattr, const char *value)
Walks up the device chain using the device from disk, checking each device for sysattr with (optional) value.
EAPI const char * eeze_disk_udev_walk_get_sysattr (Eeze_Disk *disk, const char *sysattr)
Walks up the device chain of disk checking each device for sysattr and returns the value if found.

  Variables
EAPI int EEZE_EVENT_DISK_MOUNT
EAPI int EEZE_EVENT_DISK_UNMOUNT
EAPI int EEZE_EVENT_DISK_EJECT
EAPI int EEZE_EVENT_DISK_ERROR

Detailed Description

Scan and query information about disks. Manipulate them with moun, unmount and eject.

Typedef Documentation

  Eeze_Disk

Since
    1.1

Handle for an Eeze Disk.

  Eeze_Event_Disk_Error

Since
    1.1

Contains the human readable error message.

Enumeration Type Documentation

  enum Eeze_Disk_Type

Since
    1.1

All disk types known to Eeze.

Enumerator

EEZE_DISK_TYPE_UNKNOWN
    type could not be determined

EEZE_DISK_TYPE_INTERNAL
    internal drive

EEZE_DISK_TYPE_CDROM
    cdrom drive

EEZE_DISK_TYPE_USB
    usb drive

EEZE_DISK_TYPE_FLASH
    flash disk

  enum Eeze_Mount_Opts

Since
    1.1

All mount options known to Eeze.

Enumerator

EEZE_DISK_MOUNTOPT_UID
    use current user's uid

EEZE_DISK_MOUNTOPT_NODEV

Since
    1.7

Function Documentation

  EAPI void eeze_disk_function (void)

Use this function to determine whether your eeze is disk-capable. Since applications will die if they run/compile against a function that doesn't exist, if your application successfully runs/compiles with this function then you have eeze_disk.

Since
    1.1

  EAPI Eina_Bool eeze_disk_can_mount (void)

Return whether mount support is available in eeze. Use this function to determine whether your Eeze library was compiled with a mount binary available.

Since
    1.1

References EINA_FALSE.

  EAPI Eina_Bool eeze_disk_can_unmount (void)

Return whether unmount support is available in eeze. Use this function to determine whether your Eeze library was compiled with an unmount binary available.

Since
    1.1

References EINA_FALSE.

  EAPI Eina_Bool eeze_disk_can_eject (void)

Return whether eject support is available in eeze. Use this function to determine whether your Eeze library was compiled with an eject binary available.

Since
    1.1

References EINA_FALSE.

  EAPI Eeze_Disk* eeze_disk_new (const char * path)

Create a new disk object from a /sys/ path or /dev/ path.

Parameters
    path The /sys/ or /dev path of the disk; CANNOT be NULL.

Returns
    The new disk object

This function creates a new Eeze_Disk from path. Note that this function does the minimal amount of work in order to save memory, and udev info about the disk is not retrieved in this call.

Since
    1.1

References eeze_udev_devpath_get_syspath(), EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, eina_stringshare_add(), eina_stringshare_del(), and EINA_TRUE.

  EAPI Eeze_Disk* eeze_disk_new_from_mount (const char * mount_point)

Create a new disk object from a mount point.

Parameters
    mount_point The mount point of the disk; CANNOT be NULL

Returns
    The new disk object

This function creates a new Eeze_Disk from mount_point. Note that this function does the minimal amount of work in order to save memory, and udev info about the disk is not retrieved in this call. If the disk is not currently mounted, it must have an entry in /etc/fstab.

Since
    1.1

References eeze_udev_devpath_get_syspath(), EINA_FALSE, eina_list_append(), EINA_SAFETY_ON_NULL_RETURN_VAL, eina_stringshare_add(), eina_stringshare_del(), and EINA_TRUE.

  EAPI void eeze_disk_free (Eeze_Disk * disk)

Frees a disk object.

Parameters
    disk The disk object to free

This call frees an Eeze_Disk. Once freed, the disk can no longer be used.

Since
    1.1

References ecore_exe_kill(), eina_list_remove(), EINA_SAFETY_ON_NULL_RETURN, and eina_strbuf_free().

  EAPI void eeze_disk_scan (Eeze_Disk * disk)

Retrieve all disk information.

Parameters
    disk Use this function to retrieve all of a disk's information at once, then use a 'get' function to retrieve the value. Data retrieved in this call is cached, meaning that subsequent calls will return immediately without performing any work.

Since
    1.1

References EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN, eina_stringshare_del(), and EINA_TRUE.

  EAPI void eeze_disk_data_set (Eeze_Disk * disk, void * data)

Associate data with a disk.

Parameters
    disk The disk
    data The data

Data can be associated with disk with this function.

See also
    eeze_disk_data_get

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN.

  EAPI void* eeze_disk_data_get (Eeze_Disk * disk)

Retrieve data previously associated with a disk.

Parameters
    disk The disk

Returns
    The data

Data that has been previously associated with disk is returned with this function.

See also
    eeze_disk_data_set

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_syspath_get (Eeze_Disk * disk)

Return the /sys/ path of a disk.

Parameters
    disk The disk

Returns
    The /sys/ path

This retrieves the /sys/ path that udev associates with disk.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_devpath_get (Eeze_Disk * disk)

Return the /dev/ path of a disk.

Parameters
    disk The disk

Returns
    The /dev/ path

This retrieves the /dev/ path that udev has created a device node at for disk.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by eeze_disk_eject(), eeze_disk_mount(), eeze_disk_mount_point_get(), and eeze_disk_unmount().

  EAPI const char* eeze_disk_fstype_get (Eeze_Disk * disk)

Return the filesystem of the disk (if known)

Parameters
    disk The disk

Returns
    The filesystem type

This retrieves the filesystem that the disk is using, or NULL if unknown.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_vendor_get (Eeze_Disk * disk)

Return the manufacturing vendor of the disk.

Parameters
    disk The disk

Returns
    The vendor

This retrieves the vendor which manufactured the disk, or NULL if unknown.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_model_get (Eeze_Disk * disk)

Return the model of the disk.

Parameters
    disk The disk

Returns
    The model

This retrieves the model of the disk, or NULL if unknown.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_serial_get (Eeze_Disk * disk)

Return the serial number of the disk.

Parameters
    disk The disk

Returns
    The serial number

This retrieves the serial number the disk, or NULL if unknown.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_uuid_get (Eeze_Disk * disk)

Return the UUID of the disk.

Parameters
    disk The disk

Returns
    The UUID

This retrieves the UUID of the disk, or NULL if unknown. A UUID is a 36 character (hopefully) unique identifier which can be used to store persistent information about a disk.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by eeze_disk_mount(), and eeze_disk_mount_point_get().

  EAPI const char* eeze_disk_label_get (Eeze_Disk * disk)

Return the label of the disk.

Parameters
    disk The disk

Returns
    The label

This retrieves the label (name) of the disk, or NULL if unknown.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by eeze_disk_mount_point_get().

  EAPI Eeze_Disk_Type eeze_disk_type_get (Eeze_Disk * disk)

Return the Eeze_Disk_Type of the disk.

Parameters
    disk The disk

Returns
    The type

This retrieves the Eeze_Disk_Type of the disk. This call is useful for determining the bus that the disk is connected through.

Since
    1.1

References EEZE_DISK_TYPE_UNKNOWN, and EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI Eina_Bool eeze_disk_removable_get (Eeze_Disk * disk)

Return whether the disk is removable.

Parameters
    disk The disk

Returns
    EINA_TRUE if removable, EINA_FALSE otherwise.

Since
    1.1

References EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_del().

  EAPI Eina_Bool eeze_disk_mounted_get (Eeze_Disk * disk)

Return the mount state of a disk.

Parameters
    disk The disk

Returns
    The mount state

This returns the mounted state of the disk. EINA_TRUE if mounted, EINA_FALSE otherwise.

Since
    1.1

References EINA_FALSE, and EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI const char* eeze_disk_mount_wrapper_get (Eeze_Disk * disk)

Get the previously set mount wrapper for a disk.

Parameters
    disk The disk

Returns
    The wrapper, or NULL on failure.

This returns the wrapper previously set with eeze_disk_mount_wrapper_set

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI Eina_Bool eeze_disk_mount_wrapper_set (Eeze_Disk * disk, const char * wrapper)

Set a wrapper to run mount commands with.

Parameters
    disk The disk to wrap mount commands for
    wrapper The wrapper executable

Returns
    EINA_TRUE on success, EINA_FALSE otherwise.

Use this function to set up a wrapper for running mount/umount commands. The wrapper must NOT use any of the standard mount/umount error code return values, and it must return 0 on success. Note that this function will call stat() on wrapper if not NULL to test for existence.

Since
    1.1

References EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, EINA_SAFETY_ON_TRUE_RETURN_VAL, eina_stringshare_del(), eina_stringshare_replace(), and EINA_TRUE.

  EAPI Eina_Bool eeze_disk_mount (Eeze_Disk * disk)

Begin a mount operation on the disk.

Parameters
    disk The disk

Returns
    EINA_TRUE if the operation was started, EINA_FALSE otherwise.

This call is used to begin a mount operation on disk. The operation will run asynchronously in a pipe, emitting an EEZE_EVENT_DISK_MOUNT event with the disk object as its event on completion. If any errors are encountered, they will automatically logged to the eeze_disk domain and an EEZE_EVENT_DISK_ERROR event will be generated with an Eeze_Event_Disk_Error struct as its event.

NOTE: The return value of this function does not in any way reflect the mount state of a disk.

Since
    1.1

References eeze_disk_devpath_get(), eeze_disk_mount_point_set(), eeze_disk_uuid_get(), EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, eina_strbuf_append_printf(), eina_strbuf_new(), eina_strbuf_string_free(), and eina_stringshare_del().

  EAPI Eina_Bool eeze_disk_unmount (Eeze_Disk * disk)

Begin an unmount operation on the disk.

Parameters
    disk The disk

Returns
    EINA_TRUE if the operation was started, EINA_FALSE otherwise.

This call is used to begin an unmount operation on disk. The operation will run asynchronously in a pipe, emitting an EEZE_EVENT_DISK_UNMOUNT event with the disk object as its event on completion. If any errors are encountered, they will automatically logged to the eeze_disk domain and an EEZE_EVENT_DISK_ERROR event will be generated with an Eeze_Event_Disk_Error struct as its event.

NOTE: The return value of this function does not in any way reflect the mount state of a disk.

Since
    1.1

References ecore_exe_run(), eeze_disk_devpath_get(), EINA_FALSE, eina_list_append(), EINA_SAFETY_ON_NULL_RETURN_VAL, eina_strbuf_append_printf(), eina_strbuf_new(), eina_strbuf_string_free(), eina_strbuf_string_get(), EINA_TRUE, and INF.

Referenced by eeze_disk_eject().

  EAPI Eina_Bool eeze_disk_eject (Eeze_Disk * disk)

Begin an eject operation on the disk.

Parameters
    disk The disk

Returns
    EINA_TRUE if the operation was started, EINA_FALSE otherwise.

This call is used to begin an eject operation on disk. The operation will run asynchronously in a pipe, emitting an EEZE_EVENT_DISK_EJECT event with the disk object as its event on completion. If any errors are encountered, they will automatically logged to the eeze_disk domain and an EEZE_EVENT_DISK_ERROR event will be generated with an Eeze_Event_Disk_Error struct as its event.

NOTE: The return value of this function does not in any way reflect the mount state of a disk.

Since
    1.1

References ecore_exe_run(), eeze_disk_devpath_get(), eeze_disk_unmount(), EINA_FALSE, eina_list_append(), EINA_SAFETY_ON_NULL_RETURN_VAL, eina_strbuf_append_printf(), eina_strbuf_new(), eina_strbuf_string_get(), EINA_TRUE, and INF.

  EAPI void eeze_disk_cancel (Eeze_Disk * disk)

Cancel a pending operation on the disk.

Parameters
    disk The disk

This function cancels the current pending operation on disk which was previously started with eeze_disk_mount or eeze_disk_unmount.

Since
    1.1

References ecore_exe_kill(), and EINA_SAFETY_ON_NULL_RETURN.

  EAPI const char* eeze_disk_mount_point_get (Eeze_Disk * disk)

Return the mount point of a disk.

Parameters
    disk The disk

Returns
    The mount point

This function returns the mount point associated with disk. Note that to determine whether the disk is actually mounted, eeze_disk_mounted_get should be used.

Since
    1.1

References eeze_disk_devpath_get(), eeze_disk_label_get(), eeze_disk_uuid_get(), EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

  EAPI Eina_Bool eeze_disk_mount_point_set (Eeze_Disk * disk, const char * mount_point)

Set the mount point of a disk.

Parameters
    disk The disk
    mount_point The mount point

Returns
    EINA_TRUE on success, EINA_FALSE otherwise.

This function sets the mount point associated with disk. Note that to determine whether the disk is actually mounted, eeze_disk_mounted_get should be used. Also note that this function cannot be used while the disk is mounted to avoid losing the current mount point.

Since
    1.1

References EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, eina_stringshare_replace(), and EINA_TRUE.

Referenced by eeze_disk_mount().

  EAPI Eina_Bool eeze_disk_mountopts_set (Eeze_Disk * disk, unsigned long opts)

Set the mount options using flags.

Parameters
    disk The disk
    opts An ORed set of Eeze_Mount_Opts

Returns
    EINA_TRUE on success, EINA_FALSE otherwise.

This function replaces the current mount opts of a disk with the ones in opts.

Since
    1.1

References EEZE_DISK_MOUNTOPT_UID, EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, and EINA_TRUE.

  EAPI unsigned long eeze_disk_mountopts_get (Eeze_Disk * disk)

Get the flags of a disk's current mount options.

Parameters
    disk The disk

Returns
    An ORed set of Eeze_Mount_Opts, 0 on failure

This function returns the current mount opts of a disk.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL.

  EAPI Eina_Bool eeze_mount_tabs_watch (void)

Begin watching mtab and fstab.

Returns
    EINA_TRUE if watching was started, EINA_FALSE otherwise.

This function creates inotify watches on /etc/mtab and /etc/fstab and watches them for changes. This function should be used when expecting a lot of disk mounting/unmounting while you need disk data since it will automatically update certain necessary data instead of waiting.

See also
    eeze_mount_mtab_scan, eeze_mount_fstab_scan

Since
    1.1

References ECORE_FD_ERROR, ecore_file_monitor_add(), ecore_main_fd_handler_file_add(), EINA_FALSE, EINA_SAFETY_ON_NULL_GOTO, EINA_TRUE, ERR, and fcntl().

  EAPI void eeze_mount_tabs_unwatch (void)

Stop watching /etc/fstab and /etc/mtab. This function stops watching fstab and mtab. Data obtained previously will be saved.

Since
    1.1

References ecore_file_monitor_del(), ecore_main_fd_handler_del(), and EINA_FALSE.

  EAPI Eina_Bool eeze_mount_mtab_scan (void)

Scan /etc/mtab a single time.

Returns
    EINA_TRUE if mtab could be scanned, EINA_FALSE otherwise.

This function is used to perform a single scan on /etc/mtab. It is used to gather information about mounted filesystems which can then be used with your Eeze_Disk objects where appropriate. These files will automatically be scanned any time a mount point or mount state is requested unless eeze_mount_tabs_watch has been called previously, in which case data is stored for use. If this function is called after eeze_mount_tabs_watch, EINA_TRUE will be returned.

See also
    eeze_mount_tabs_watch, eeze_mount_fstab_scan

Since
    1.1

References EINA_FALSE, and EINA_TRUE.

  EAPI Eina_Bool eeze_mount_fstab_scan (void)

Scan /etc/fstab a single time.

Returns
    EINA_TRUE if mtab could be scanned, EINA_FALSE otherwise.

This function is used to perform a single scan on /etc/fstab. It is used to gather information about mounted filesystems which can then be used with your Eeze_Disk objects where appropriate. These files will automatically be scanned any time a mount point or mount state is requested unless eeze_mount_tabs_watch has been called previously, in which case data is stored for use. If this function is called after eeze_mount_tabs_watch, EINA_TRUE will be returned.

See also
    eeze_mount_tabs_watch, eeze_mount_mtab_scan

Since
    1.1

References EINA_FALSE, and EINA_TRUE.

  EAPI const char* eeze_disk_udev_get_property (Eeze_Disk * disk, const char * property)

Get the property value of a disk.

Parameters
    disk The disk
    property The property to get; full list of these is a FIXME

Returns
    A stringshared char* with the property or NULL on failure.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL, EINA_SAFETY_ON_TRUE_RETURN_VAL, and eina_stringshare_add().

  EAPI const char* eeze_disk_udev_get_sysattr (Eeze_Disk * disk, const char * sysattr)

Get the sysattr value of a disk.

Parameters
    disk The disk
    sysattr The sysattr to get; full list of these is a FIXME

Returns
    A stringshared char* with the sysattr or NULL on failure.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL, EINA_SAFETY_ON_TRUE_RETURN_VAL, and eina_stringshare_add().

  EAPI const char* eeze_disk_udev_get_parent (Eeze_Disk * disk)

Find the root device of a disk.

Parameters
    disk The disk

Returns
    The syspath of the parent device

Return a stringshared syspath (/sys/$syspath) for the parent device.

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL, and eina_stringshare_add().

  EAPI Eina_Bool eeze_disk_udev_walk_check_sysattr (Eeze_Disk * disk, const char * sysattr, const char * value)

Walks up the device chain using the device from disk, checking each device for sysattr with (optional) value.

Parameters
    disk The disk to walk
    sysattr The attribute to find
    value OPTIONAL: The value that sysattr should have, or NULL.

Returns
    If the sysattr (with value) is found, returns EINA_TRUE, EINA_FALSE otherwise.

Since
    1.1

References EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, EINA_SAFETY_ON_TRUE_RETURN_VAL, and EINA_TRUE.

  EAPI const char* eeze_disk_udev_walk_get_sysattr (Eeze_Disk * disk, const char * sysattr)

Walks up the device chain of disk checking each device for sysattr and returns the value if found.

Parameters
    disk The disk
    sysattr The attribute to find

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

Since
    1.1

References EINA_SAFETY_ON_NULL_RETURN_VAL, EINA_SAFETY_ON_TRUE_RETURN_VAL, and eina_stringshare_add().

Author

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