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-rw-r--r--lib/sqfs/comp/compressor.c23
-rw-r--r--lib/sqfs/comp/gzip.c16
-rw-r--r--lib/sqfs/comp/internal.h15
-rw-r--r--lib/sqfs/comp/lz4.c11
-rw-r--r--lib/sqfs/comp/lzma.c11
-rw-r--r--lib/sqfs/comp/xz.c13
-rw-r--r--lib/sqfs/comp/zstd.c15
7 files changed, 65 insertions, 39 deletions
diff --git a/lib/sqfs/comp/compressor.c b/lib/sqfs/comp/compressor.c
index 28de2c5..3b48030 100644
--- a/lib/sqfs/comp/compressor.c
+++ b/lib/sqfs/comp/compressor.c
@@ -12,8 +12,8 @@
#include "internal.h"
-typedef sqfs_compressor_t *(*compressor_fun_t)
- (const sqfs_compressor_config_t *cfg);
+typedef int (*compressor_fun_t)(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out);
static compressor_fun_t compressors[SQFS_COMP_MAX + 1] = {
#ifdef WITH_GZIP
@@ -81,17 +81,24 @@ bool sqfs_compressor_exists(SQFS_COMPRESSOR id)
return (compressors[id] != NULL);
}
-sqfs_compressor_t *sqfs_compressor_create(const sqfs_compressor_config_t *cfg)
+int sqfs_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out)
{
sqfs_u8 padd0[sizeof(cfg->opt)];
int ret;
- if (cfg == NULL || cfg->id < SQFS_COMP_MIN || cfg->id > SQFS_COMP_MAX)
- return NULL;
+ /* check compressor ID */
+ if (cfg == NULL)
+ return SQFS_ERROR_ARG_INVALID;
+
+ if (cfg->id < SQFS_COMP_MIN || cfg->id > SQFS_COMP_MAX)
+ return SQFS_ERROR_UNSUPPORTED;
if (compressors[cfg->id] == NULL)
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
+ /* make sure the padding bytes are cleared, so we could theoretically
+ turn them into option fields in the future and remain compatible */
memset(padd0, 0, sizeof(padd0));
switch (cfg->id) {
@@ -117,9 +124,9 @@ sqfs_compressor_t *sqfs_compressor_create(const sqfs_compressor_config_t *cfg)
}
if (ret != 0)
- return NULL;
+ return SQFS_ERROR_ARG_INVALID;
- return compressors[cfg->id](cfg);
+ return compressors[cfg->id](cfg, out);
}
const char *sqfs_compressor_name_from_id(SQFS_COMPRESSOR id)
diff --git a/lib/sqfs/comp/gzip.c b/lib/sqfs/comp/gzip.c
index 351d733..d702da1 100644
--- a/lib/sqfs/comp/gzip.c
+++ b/lib/sqfs/comp/gzip.c
@@ -247,7 +247,8 @@ static sqfs_object_t *gzip_create_copy(const sqfs_object_t *cmp)
return (sqfs_object_t *)gzip;
}
-sqfs_compressor_t *gzip_compressor_create(const sqfs_compressor_config_t *cfg)
+int gzip_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out)
{
gzip_compressor_t *gzip;
sqfs_compressor_t *base;
@@ -255,24 +256,24 @@ sqfs_compressor_t *gzip_compressor_create(const sqfs_compressor_config_t *cfg)
if (cfg->flags & ~(SQFS_COMP_FLAG_GZIP_ALL |
SQFS_COMP_FLAG_GENERIC_ALL)) {
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
}
if (cfg->opt.gzip.level < SQFS_GZIP_MIN_LEVEL ||
cfg->opt.gzip.level > SQFS_GZIP_MAX_LEVEL) {
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
}
if (cfg->opt.gzip.window_size < SQFS_GZIP_MIN_WINDOW ||
cfg->opt.gzip.window_size > SQFS_GZIP_MAX_WINDOW) {
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
}
gzip = calloc(1, sizeof(*gzip));
base = (sqfs_compressor_t *)gzip;
if (gzip == NULL)
- return NULL;
+ return SQFS_ERROR_ALLOC;
gzip->opt.level = cfg->opt.gzip.level;
gzip->opt.window = cfg->opt.gzip.window_size;
@@ -296,8 +297,9 @@ sqfs_compressor_t *gzip_compressor_create(const sqfs_compressor_config_t *cfg)
if (ret != Z_OK) {
free(gzip);
- return NULL;
+ return SQFS_ERROR_COMPRESSOR;
}
- return base;
+ *out = base;
+ return 0;
}
diff --git a/lib/sqfs/comp/internal.h b/lib/sqfs/comp/internal.h
index 7518f56..0566683 100644
--- a/lib/sqfs/comp/internal.h
+++ b/lib/sqfs/comp/internal.h
@@ -24,18 +24,23 @@ SQFS_INTERNAL
int sqfs_generic_read_options(sqfs_file_t *file, void *data, size_t size);
SQFS_INTERNAL
-sqfs_compressor_t *xz_compressor_create(const sqfs_compressor_config_t *cfg);
+int xz_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out);
SQFS_INTERNAL
-sqfs_compressor_t *gzip_compressor_create(const sqfs_compressor_config_t *cfg);
+int gzip_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out);
SQFS_INTERNAL
-sqfs_compressor_t *lz4_compressor_create(const sqfs_compressor_config_t *cfg);
+int lz4_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out);
SQFS_INTERNAL
-sqfs_compressor_t *zstd_compressor_create(const sqfs_compressor_config_t *cfg);
+int zstd_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out);
SQFS_INTERNAL
-sqfs_compressor_t *lzma_compressor_create(const sqfs_compressor_config_t *cfg);
+int lzma_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out);
#endif /* INTERNAL_H */
diff --git a/lib/sqfs/comp/lz4.c b/lib/sqfs/comp/lz4.c
index 460ac44..4791746 100644
--- a/lib/sqfs/comp/lz4.c
+++ b/lib/sqfs/comp/lz4.c
@@ -132,20 +132,21 @@ static void lz4_destroy(sqfs_object_t *base)
free(base);
}
-sqfs_compressor_t *lz4_compressor_create(const sqfs_compressor_config_t *cfg)
+int lz4_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out)
{
sqfs_compressor_t *base;
lz4_compressor_t *lz4;
if (cfg->flags & ~(SQFS_COMP_FLAG_LZ4_ALL |
SQFS_COMP_FLAG_GENERIC_ALL)) {
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
}
lz4 = calloc(1, sizeof(*lz4));
base = (sqfs_compressor_t *)lz4;
if (lz4 == NULL)
- return NULL;
+ return SQFS_ERROR_ALLOC;
lz4->high_compression = (cfg->flags & SQFS_COMP_FLAG_LZ4_HC) != 0;
lz4->block_size = cfg->block_size;
@@ -157,5 +158,7 @@ sqfs_compressor_t *lz4_compressor_create(const sqfs_compressor_config_t *cfg)
base->read_options = lz4_read_options;
((sqfs_object_t *)base)->copy = lz4_create_copy;
((sqfs_object_t *)base)->destroy = lz4_destroy;
- return base;
+
+ *out = base;
+ return 0;
}
diff --git a/lib/sqfs/comp/lzma.c b/lib/sqfs/comp/lzma.c
index 51afe65..2a6cd1f 100644
--- a/lib/sqfs/comp/lzma.c
+++ b/lib/sqfs/comp/lzma.c
@@ -171,18 +171,19 @@ static void lzma_destroy(sqfs_object_t *base)
free(base);
}
-sqfs_compressor_t *lzma_compressor_create(const sqfs_compressor_config_t *cfg)
+int lzma_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out)
{
sqfs_compressor_t *base;
lzma_compressor_t *lzma;
if (cfg->flags & ~SQFS_COMP_FLAG_GENERIC_ALL)
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
lzma = calloc(1, sizeof(*lzma));
base = (sqfs_compressor_t *)lzma;
if (lzma == NULL)
- return NULL;
+ return SQFS_ERROR_ALLOC;
lzma->block_size = cfg->block_size;
@@ -196,5 +197,7 @@ sqfs_compressor_t *lzma_compressor_create(const sqfs_compressor_config_t *cfg)
base->read_options = lzma_read_options;
((sqfs_object_t *)base)->copy = lzma_create_copy;
((sqfs_object_t *)base)->destroy = lzma_destroy;
- return base;
+
+ *out = base;
+ return 0;
}
diff --git a/lib/sqfs/comp/xz.c b/lib/sqfs/comp/xz.c
index 423604b..32fb032 100644
--- a/lib/sqfs/comp/xz.c
+++ b/lib/sqfs/comp/xz.c
@@ -227,23 +227,24 @@ static void xz_destroy(sqfs_object_t *base)
free(base);
}
-sqfs_compressor_t *xz_compressor_create(const sqfs_compressor_config_t *cfg)
+int xz_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out)
{
sqfs_compressor_t *base;
xz_compressor_t *xz;
if (cfg->flags & ~(SQFS_COMP_FLAG_GENERIC_ALL |
SQFS_COMP_FLAG_XZ_ALL)) {
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
}
if (!is_dict_size_valid(cfg->opt.xz.dict_size))
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
xz = calloc(1, sizeof(*xz));
base = (sqfs_compressor_t *)xz;
if (xz == NULL)
- return NULL;
+ return SQFS_ERROR_ALLOC;
xz->flags = cfg->flags;
xz->dict_size = cfg->opt.xz.dict_size;
@@ -255,5 +256,7 @@ sqfs_compressor_t *xz_compressor_create(const sqfs_compressor_config_t *cfg)
base->read_options = xz_read_options;
((sqfs_object_t *)base)->copy = xz_create_copy;
((sqfs_object_t *)base)->destroy = xz_destroy;
- return base;
+
+ *out = base;
+ return 0;
}
diff --git a/lib/sqfs/comp/zstd.c b/lib/sqfs/comp/zstd.c
index 12ddfdb..986c669 100644
--- a/lib/sqfs/comp/zstd.c
+++ b/lib/sqfs/comp/zstd.c
@@ -134,29 +134,30 @@ static void zstd_destroy(sqfs_object_t *base)
free(zstd);
}
-sqfs_compressor_t *zstd_compressor_create(const sqfs_compressor_config_t *cfg)
+int zstd_compressor_create(const sqfs_compressor_config_t *cfg,
+ sqfs_compressor_t **out)
{
zstd_compressor_t *zstd;
sqfs_compressor_t *base;
if (cfg->flags & ~SQFS_COMP_FLAG_GENERIC_ALL)
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
if (cfg->opt.zstd.level < 1 ||
cfg->opt.zstd.level > ZSTD_maxCLevel()) {
- return NULL;
+ return SQFS_ERROR_UNSUPPORTED;
}
zstd = calloc(1, sizeof(*zstd));
base = (sqfs_compressor_t *)zstd;
if (zstd == NULL)
- return NULL;
+ return SQFS_ERROR_ALLOC;
zstd->block_size = cfg->block_size;
zstd->zctx = ZSTD_createCCtx();
if (zstd->zctx == NULL) {
free(zstd);
- return NULL;
+ return SQFS_ERROR_COMPRESSOR;
}
base->get_configuration = zstd_get_configuration;
@@ -166,5 +167,7 @@ sqfs_compressor_t *zstd_compressor_create(const sqfs_compressor_config_t *cfg)
base->read_options = zstd_read_options;
((sqfs_object_t *)base)->copy = zstd_create_copy;
((sqfs_object_t *)base)->destroy = zstd_destroy;
- return base;
+
+ *out = base;
+ return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 00:59:03 +0000