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btrfs: Use U-Boot API for decompression

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Use the common function to avoid code duplication.

Acked-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-09-25 07:03:10 -06:00 committed by Tom Rini
parent 94d0a2efc0
commit 918adf8e07
1 changed files with 5 additions and 46 deletions
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51
fs/btrfs/compression.c
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@ -6,6 +6,7 @@
*/
#include "btrfs.h"
#include <abuf.h>
#include <log.h>
#include <malloc.h>
#include <linux/lzo.h>
@ -136,54 +137,12 @@ static u32 decompress_zlib(const u8 *_cbuf, u32 clen, u8 *dbuf, u32 dlen)
static u32 decompress_zstd(const u8 *cbuf, u32 clen, u8 *dbuf, u32 dlen)
{
ZSTD_DStream *dstream;
ZSTD_inBuffer in_buf;
ZSTD_outBuffer out_buf;
void *workspace;
size_t wsize;
u32 res = -1;
struct abuf in, out;
wsize = ZSTD_DStreamWorkspaceBound(ZSTD_BTRFS_MAX_INPUT);
workspace = malloc(wsize);
if (!workspace) {
debug("%s: cannot allocate workspace of size %zu\n", __func__,
wsize);
return -1;
}
abuf_init_set(&in, (u8 *)cbuf, clen);
abuf_init_set(&out, dbuf, dlen);
dstream = ZSTD_initDStream(ZSTD_BTRFS_MAX_INPUT, workspace, wsize);
if (!dstream) {
printf("%s: ZSTD_initDStream failed\n", __func__);
goto err_free;
}
in_buf.src = cbuf;
in_buf.pos = 0;
in_buf.size = clen;
out_buf.dst = dbuf;
out_buf.pos = 0;
out_buf.size = dlen;
while (1) {
size_t ret;
ret = ZSTD_decompressStream(dstream, &out_buf, &in_buf);
if (ZSTD_isError(ret)) {
printf("%s: ZSTD_decompressStream error %d\n", __func__,
ZSTD_getErrorCode(ret));
goto err_free;
}
if (in_buf.pos >= clen || !ret)
break;
}
res = out_buf.pos;
err_free:
free(workspace);
return res;
return zstd_decompress(&in, &out);
}
u32 btrfs_decompress(u8 type, const char *c, u32 clen, char *d, u32 dlen)