47 	int ret = 0;  in deflate_comp_init()  local
53 		ret = -ENOMEM;  in deflate_comp_init()
56 	ret = zlib_deflateInit2(stream, DEFLATE_DEF_LEVEL, Z_DEFLATED,  in deflate_comp_init()
59 	if (ret != Z_OK) {  in deflate_comp_init()
60 		ret = -EINVAL;  in deflate_comp_init()
64 	return ret;  in deflate_comp_init()
72 	int ret = 0;  in deflate_decomp_init()  local
77 		ret = -ENOMEM;  in deflate_decomp_init()
80 	ret = zlib_inflateInit2(stream, -DEFLATE_DEF_WINBITS);  in deflate_decomp_init()
81 	if (ret != Z_OK) {  in deflate_decomp_init()
82 		ret = -EINVAL;  in deflate_decomp_init()
86 	return ret;  in deflate_decomp_init()
107 	int ret;  in deflate_init()  local
109 	ret = deflate_comp_init(ctx);  in deflate_init()
110 	if (ret)  in deflate_init()
112 	ret = deflate_decomp_init(ctx);  in deflate_init()
113 	if (ret)  in deflate_init()
116 	return ret;  in deflate_init()
130 	int ret = 0;  in deflate_compress()  local
134 	ret = zlib_deflateReset(stream);  in deflate_compress()
135 	if (ret != Z_OK) {  in deflate_compress()
136 		ret = -EINVAL;  in deflate_compress()
145 	ret = zlib_deflate(stream, Z_FINISH);  in deflate_compress()
146 	if (ret != Z_STREAM_END) {  in deflate_compress()
147 		ret = -EINVAL;  in deflate_compress()
150 	ret = 0;  in deflate_compress()
153 	return ret;  in deflate_compress()
160 	int ret = 0;  in deflate_decompress()  local
164 	ret = zlib_inflateReset(stream);  in deflate_decompress()
165 	if (ret != Z_OK) {  in deflate_decompress()
166 		ret = -EINVAL;  in deflate_decompress()
175 	ret = zlib_inflate(stream, Z_SYNC_FLUSH);  in deflate_decompress()
181 	if (ret == Z_OK && !stream->avail_in && stream->avail_out) {  in deflate_decompress()
185 		ret = zlib_inflate(stream, Z_FINISH);  in deflate_decompress()
187 	if (ret != Z_STREAM_END) {  in deflate_decompress()
188 		ret = -EINVAL;  in deflate_decompress()
191 	ret = 0;  in deflate_decompress()
194 	return ret;  in deflate_decompress()