From 2f22a35e843a24f0ad5f31644133d64648fe4efc Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Mon, 12 Aug 2019 18:25:52 +0200 Subject: Add deep-copy function to compressor interface Signed-off-by: David Oberhollenzer --- lib/comp/lz4.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'lib/comp/lz4.c') diff --git a/lib/comp/lz4.c b/lib/comp/lz4.c index ffa84dc..abb6c5c 100644 --- a/lib/comp/lz4.c +++ b/lib/comp/lz4.c @@ -97,6 +97,19 @@ static ssize_t lz4_uncomp_block(compressor_t *base, const uint8_t *in, return ret; } +static compressor_t *lz4_create_copy(compressor_t *cmp) +{ + lz4_compressor_t *lz4 = malloc(sizeof(*lz4)); + + if (lz4 == NULL) { + perror("creating additional lz4 compressor"); + return NULL; + } + + memcpy(lz4, cmp, sizeof(*lz4)); + return (compressor_t *)lz4; +} + static void lz4_destroy(compressor_t *base) { free(base); @@ -131,6 +144,7 @@ compressor_t *create_lz4_compressor(bool compress, size_t block_size, base->do_block = compress ? lz4_comp_block : lz4_uncomp_block; base->write_options = lz4_write_options; base->read_options = lz4_read_options; + base->create_copy = lz4_create_copy; return base; } -- cgit v1.2.3