firmware/efi/vars.c

118 	 * variable, it's malformed  in validate_load_option()
281 	 * Check if our variable is in the validated variables list  in efivar_variable_is_removable()
367 	 * The variable name is, by definition, a NULL-terminated  in var_name_strnsize()
397 	printk(KERN_WARNING "efivars: duplicate variable: %s-%pUl\n",  in dup_variable_bug()
404  * @func: callback function to invoke for every variable
407  * @head: initialised head of variable list
409  * Get every EFI variable from the firmware and invoke @func. @func
442 	 * the variable name and variable data is 1024 bytes.  in efivar_init()
461 			 * same variable name on multiple calls to  in efivar_init()
464 			 * we'll ever see a different variable name,  in efivar_init()
508  * efivar_entry_add - add entry to variable list
526  * efivar_entry_remove - remove entry from variable list
543  * efivar_entry_list_del_unlock - remove entry from variable list
546  * Remove @entry from the variable list and release the list lock.
560  * __efivar_entry_delete - delete an EFI variable
561  * @entry: entry containing EFI variable to delete
563  * Delete the variable from the firmware but leave @entry on the
564  * variable list.
567  * not remove @entry from the variable list. Also, it is safe to be
590  * efivar_entry_delete - delete variable and remove entry from list
591  * @entry: entry containing variable to delete
593  * Delete the variable from the firmware and remove @entry from the
594  * variable list. It is the caller's responsibility to free @entry
628  * @entry: entry containing the EFI variable to write
629  * @attributes: variable attributes
631  * @data: buffer containing variable data
632  * @head: head of variable list
634  * Calls set_variable() for an EFI variable. If creating a new EFI
635  * variable, this function is usually followed by efivar_entry_add().
637  * Before writing the variable, the remaining EFI variable storage
721  * @name: buffer containing the variable name
722  * @vendor: variable vendor guid
723  * @attributes: variable attributes
726  * @data: buffer containing variable data
728  * Ensures there is enough free storage in the firmware for this variable, and
729  * if so, calls set_variable(). If creating a new EFI variable, this function
750 	 * If the EFI variable backend provides a non-blocking  in efivar_entry_set_safe()
787  * @name: the EFI variable name
788  * @guid: the EFI variable vendor's guid
789  * @head: head of the variable list
792  * Search for an entry on the variable list that has the EFI variable
839  * efivar_entry_size - obtain the size of a variable
840  * @entry: entry for this variable
841  * @size: location to store the variable's size
870  * @entry: read data for this variable
871  * @attributes: variable attributes
873  * @data: buffer to store variable data
897  * @entry: read data for this variable
898  * @attributes: variable attributes
900  * @data: buffer to store variable data
926  * @entry: entry containing variable to set and get
927  * @attributes: attributes of variable to be written
935  * successful, return the new size of the variable from get_variable()
938  * Returns 0 on success, -EINVAL if the variable data is invalid,
943  * If the EFI variable does not exist when calling set_variable()
944  * (EFI_NOT_FOUND), @entry is removed from the variable list.
962 	 * set_variable call, and removal of the variable from the efivars  in efivar_entry_set_get_size()
1000 	 * Writing to the variable may have caused a change in size (which  in efivar_entry_set_get_size()
1001 	 * could either be an append or an overwrite), or the variable to be  in efivar_entry_set_get_size()
1028  * efivar_entry_iter_begin - begin iterating the variable list
1030  * Lock the variable list to prevent entry insertion and removal until
1041  * efivar_entry_iter_end - finish iterating the variable list
1043  * Unlock the variable list and allow modifications to the list again.
1052  * __efivar_entry_iter - iterate over variable list
1054  * @head: head of the variable list
1105  * efivar_entry_iter - iterate over variable list
1107  * @head: head of variable list