// SPDX-License-Identifier: GPL-2.0-or-later extern void *jent_zalloc(unsigned int len); extern void jent_zfree(void *ptr); extern void jent_memcpy(void *dest, const void *src, unsigned int n); extern void jent_get_nstime(__u64 *out); struct rand_data; extern int jent_entropy_init(void); extern int jent_read_entropy(struct rand_data *ec, unsigned char *data, unsigned int len); extern struct rand_data *jent_entropy_collector_alloc(unsigned int osr, unsigned int flags); extern void jent_entropy_collector_free(struct rand_data *entropy_collector);