diff options
Diffstat (limited to 'lib/compressor.c')
| -rw-r--r-- | lib/compressor.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/lib/compressor.c b/lib/compressor.c index 8cc2f43..b2434e0 100644 --- a/lib/compressor.c +++ b/lib/compressor.c @@ -12,6 +12,15 @@ #define EROFS_CONFIG_COMPR_DEF_BOUNDARY (128) +static struct erofs_compressor *compressors[] = { +#if LZ4_ENABLED +#if LZ4HC_ENABLED + &erofs_compressor_lz4hc, +#endif + &erofs_compressor_lz4, +#endif +}; + int erofs_compress_destsize(struct erofs_compress *c, int compression_level, void *src, @@ -36,18 +45,13 @@ int erofs_compress_destsize(struct erofs_compress *c, return ret; } -int erofs_compressor_init(struct erofs_compress *c, - char *alg_name) +const char *z_erofs_list_available_compressors(unsigned int i) { - static struct erofs_compressor *compressors[] = { -#if LZ4_ENABLED -#if LZ4HC_ENABLED - &erofs_compressor_lz4hc, -#endif - &erofs_compressor_lz4, -#endif - }; + return i >= ARRAY_SIZE(compressors) ? NULL : compressors[i]->name; +} +int erofs_compressor_init(struct erofs_compress *c, char *alg_name) +{ int ret, i; /* should be written in "minimum compression ratio * 100" */ @@ -65,7 +69,10 @@ int erofs_compressor_init(struct erofs_compress *c, ret = -EINVAL; for (i = 0; i < ARRAY_SIZE(compressors); ++i) { - ret = compressors[i]->init(c, alg_name); + if (alg_name && strcmp(alg_name, compressors[i]->name)) + continue; + + ret = compressors[i]->init(c); if (!ret) { DBG_BUGON(!c->alg); return 0; |