fs/ecryptfs/keystore.c

611  * write_tag_70_packet - Write encrypted filename (EFN) packet against FNEK
612  * @filename: NULL-terminated filename string
614  * This is the simplest mechanism for achieving filename encryption in
615  * eCryptfs. It encrypts the given filename with the mount-wide
616  * filename encryption key (FNEK) and stores it in a packet to @dest,
624 			     char *filename, size_t filename_size)
657 	 * and the plaintext filename */
669 	 *              and block-aligned encrypted filename size)
672 	 * Octets N3-N4: Block-aligned encrypted filename
674 	 *    separator, and then the filename */
737 	 * filename encryption */
792 	memcpy(&s->block_aligned_filename[s->num_rand_bytes], filename,
798 		       "convert filename memory to scatterlist; rc = [%d]. "
807 		       "convert encrypted filename memory to scatterlist; "
834 		printk(KERN_ERR "%s: Error attempting to encrypt filename; "
880  * @filename: This function kmalloc's the memory for the filename
882  *                 kmalloc'd for the filename
894 ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
905 	(*filename) = NULL;
919 	 *              and block-aligned encrypted filename size)
922 	 * Octets N3-N4: Block-aligned encrypted filename
924 	 *    separator, and then the filename */
986 		       "convert encrypted filename memory to scatterlist; "
1002 		       "convert decrypted filename memory to scatterlist; "
1025 	 * filename encryption */
1050 		printk(KERN_ERR "%s: Error attempting to decrypt filename; "
1061 		       "the filename\n", __func__);
1073 	(*filename) = kmalloc(((*filename_size) + 1), GFP_KERNEL);
1074 	if (!(*filename)) {
1078 	memcpy((*filename), &s->decrypted_filename[s->i], (*filename_size));
1079 	(*filename)[(*filename_size)] = '\0';
1088 		(*filename) = NULL;
1600 	(*packet_size) += 12; /* Ignore filename and modification date */