diff options
| author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-02-25 09:13:39 +0100 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-02-27 01:05:42 +0100 |
| commit | 3c1a4c2548cbbae96f44469278b53046c8b48868 (patch) | |
| tree | cf528c5338f850012744e3376eae502767bfdc21 /lib/sqfs/comp/xz.c | |
| parent | c9429aeece3b8642de637f7a21e68046bd690658 (diff) | |
Add a function to the compressor interface to get the configuration
This allows getting the compressor configuration back after
creating it, for various purposes.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/sqfs/comp/xz.c')
| -rw-r--r-- | lib/sqfs/comp/xz.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/sqfs/comp/xz.c b/lib/sqfs/comp/xz.c index d612729..a600956 100644 --- a/lib/sqfs/comp/xz.c +++ b/lib/sqfs/comp/xz.c @@ -196,6 +196,21 @@ static sqfs_s32 xz_uncomp_block(sqfs_compressor_t *base, const sqfs_u8 *in, return SQFS_ERROR_COMPRESSOR; } +static void xz_get_configuration(const sqfs_compressor_t *base, + sqfs_compressor_config_t *cfg) +{ + const xz_compressor_t *xz = (const xz_compressor_t *)base; + + memset(cfg, 0, sizeof(*cfg)); + cfg->id = SQFS_COMP_XZ; + cfg->flags = xz->flags; + cfg->block_size = xz->block_size; + cfg->opt.xz.dict_size = xz->dict_size; + + if (base->do_block == xz_uncomp_block) + cfg->flags |= SQFS_COMP_FLAG_UNCOMPRESS; +} + static sqfs_compressor_t *xz_create_copy(sqfs_compressor_t *cmp) { xz_compressor_t *xz = malloc(sizeof(*xz)); @@ -233,6 +248,7 @@ sqfs_compressor_t *xz_compressor_create(const sqfs_compressor_config_t *cfg) xz->flags = cfg->flags; xz->dict_size = cfg->opt.xz.dict_size; xz->block_size = cfg->block_size; + base->get_configuration = xz_get_configuration; base->do_block = (cfg->flags & SQFS_COMP_FLAG_UNCOMPRESS) ? xz_uncomp_block : xz_comp_block; base->write_options = xz_write_options; |