remove noise for demo

[qemu] / block-cloop.c

diff --git a/block-cloop.c b/block-cloop.c
index de90855..9414d10 100644 (file)
--- a/block-cloop.c
+++ b/block-cloop.c
@@ -1,8 +1,8 @@
 /*
  * QEMU Block driver for CLOOP images
- * 
+ *
  * Copyright (c) 2004 Johannes E. Schindelin
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
@@ -21,7 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include "vl.h"
+#include "qemu-common.h"
 #include "block_int.h"
 #include <zlib.h>
 
@@ -32,8 +32,8 @@ typedef struct BDRVCloopState {
     uint64_t* offsets;
     uint32_t sectors_per_block;
     uint32_t current_block;
-    char* compressed_block;
-    char* uncompressed_block;
+    uint8_t *compressed_block;
+    uint8_t *uncompressed_block;
     z_stream zstream;
 } BDRVCloopState;
 
@@ -50,14 +50,14 @@ static int cloop_probe(const uint8_t *buf, int buf_size, const char *filename)
     return 0;
 }
 
-static int cloop_open(BlockDriverState *bs, const char *filename)
+static int cloop_open(BlockDriverState *bs, const char *filename, int flags)
 {
     BDRVCloopState *s = bs->opaque;
     uint32_t offsets_size,max_compressed_block_size=1,i;
 
-    s->fd = open(filename, O_RDONLY | O_BINARY | O_LARGEFILE);
+    s->fd = open(filename, O_RDONLY | O_BINARY);
     if (s->fd < 0)
-        return -1;
+        return -errno;
     bs->read_only = 1;
 
     /* read header */
@@ -75,8 +75,7 @@ cloop_close:
 
     /* read offsets */
     offsets_size=s->n_blocks*sizeof(uint64_t);
-    if(!(s->offsets=(uint64_t*)malloc(offsets_size)))
-       goto cloop_close;
+    s->offsets=(uint64_t*)qemu_malloc(offsets_size);
     if(read(s->fd,s->offsets,offsets_size)<offsets_size)
        goto cloop_close;
     for(i=0;i<s->n_blocks;i++) {
@@ -89,14 +88,12 @@ cloop_close:
     }
 
     /* initialize zlib engine */
-    if(!(s->compressed_block=(char*)malloc(max_compressed_block_size+1)))
-       goto cloop_close;
-    if(!(s->uncompressed_block=(char*)malloc(s->block_size)))
-       goto cloop_close;
+    s->compressed_block = qemu_malloc(max_compressed_block_size+1);
+    s->uncompressed_block = qemu_malloc(s->block_size);
     if(inflateInit(&s->zstream) != Z_OK)
        goto cloop_close;
     s->current_block=s->n_blocks;
-    
+
     s->sectors_per_block = s->block_size/512;
     bs->total_sectors = s->n_blocks*s->sectors_per_block;
     return 0;
@@ -107,12 +104,12 @@ static inline int cloop_read_block(BDRVCloopState *s,int block_num)
     if(s->current_block != block_num) {
        int ret;
         uint32_t bytes = s->offsets[block_num+1]-s->offsets[block_num];
-           
+
        lseek(s->fd, s->offsets[block_num], SEEK_SET);
         ret = read(s->fd, s->compressed_block, bytes);
-        if (ret != bytes) 
+        if (ret != bytes)
             return -1;
-       
+
        s->zstream.next_in = s->compressed_block;
        s->zstream.avail_in = bytes;
        s->zstream.next_out = s->uncompressed_block;
@@ -123,13 +120,13 @@ static inline int cloop_read_block(BDRVCloopState *s,int block_num)
        ret = inflate(&s->zstream, Z_FINISH);
        if(ret != Z_STREAM_END || s->zstream.total_out != s->block_size)
            return -1;
-       
+
        s->current_block = block_num;
     }
     return 0;
 }
 
-static int cloop_read(BlockDriverState *bs, int64_t sector_num, 
+static int cloop_read(BlockDriverState *bs, int64_t sector_num,
                     uint8_t *buf, int nb_sectors)
 {
     BDRVCloopState *s = bs->opaque;
@@ -157,13 +154,10 @@ static void cloop_close(BlockDriverState *bs)
 }
 
 BlockDriver bdrv_cloop = {
-    "cloop",
-    sizeof(BDRVCloopState),
-    cloop_probe,
-    cloop_open,
-    cloop_read,
-    NULL,
-    cloop_close,
+    .format_name       = "cloop",
+    .instance_size     = sizeof(BDRVCloopState),
+    .bdrv_probe                = cloop_probe,
+    .bdrv_open         = cloop_open,
+    .bdrv_read         = cloop_read,
+    .bdrv_close                = cloop_close,
 };
-
-