diff options
Diffstat (limited to 'lib/sqfs/comp/compressor.c')
| -rw-r--r-- | lib/sqfs/comp/compressor.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/sqfs/comp/compressor.c b/lib/sqfs/comp/compressor.c index bfc20b7..902ce92 100644 --- a/lib/sqfs/comp/compressor.c +++ b/lib/sqfs/comp/compressor.c @@ -87,12 +87,42 @@ bool sqfs_compressor_exists(E_SQFS_COMPRESSOR id) sqfs_compressor_t *sqfs_compressor_create(const sqfs_compressor_config_t *cfg) { + sqfs_u8 padd0[sizeof(cfg->opt)]; + int ret; + if (cfg == NULL || cfg->id < SQFS_COMP_MIN || cfg->id > SQFS_COMP_MAX) return NULL; if (compressors[cfg->id] == NULL) return NULL; + memset(padd0, 0, sizeof(padd0)); + + switch (cfg->id) { + case SQFS_COMP_XZ: + ret = memcmp(cfg->opt.xz.padd0, padd0, + sizeof(cfg->opt.xz.padd0)); + break; + case SQFS_COMP_LZO: + ret = memcmp(cfg->opt.lzo.padd0, padd0, + sizeof(cfg->opt.lzo.padd0)); + break; + case SQFS_COMP_ZSTD: + ret = memcmp(cfg->opt.zstd.padd0, padd0, + sizeof(cfg->opt.zstd.padd0)); + break; + case SQFS_COMP_GZIP: + ret = memcmp(cfg->opt.gzip.padd0, padd0, + sizeof(cfg->opt.gzip.padd0)); + break; + default: + ret = memcmp(cfg->opt.padd0, padd0, sizeof(cfg->opt.padd0)); + break; + } + + if (ret != 0) + return NULL; + return compressors[cfg->id](cfg); } |