summaryrefslogtreecommitdiff
path: root/block-bochs.c
diff options
context:
space:
mode:
authorths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>2007-09-16 21:08:06 +0000
committerths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>2007-09-16 21:08:06 +0000
commit5fafdf24ef2c090c164d4dc89684b3f379dbdd87 (patch)
treec0654ee63b6dac76d98b427e92ef16850a90c652 /block-bochs.c
parentbd494f4cbd4187dda8cc8f4739763f24a31a4c8b (diff)
downloadqemu-5fafdf24ef2c090c164d4dc89684b3f379dbdd87.tar.gz
qemu-5fafdf24ef2c090c164d4dc89684b3f379dbdd87.tar.bz2
qemu-5fafdf24ef2c090c164d4dc89684b3f379dbdd87.zip
find -type f | xargs sed -i 's/[\t ]$//g' # on most files
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'block-bochs.c')
-rw-r--r--block-bochs.c34
1 files changed, 17 insertions, 17 deletions
diff --git a/block-bochs.c b/block-bochs.c
index 35e2a6cf01..ca95ae84ea 100644
--- a/block-bochs.c
+++ b/block-bochs.c
@@ -1,9 +1,9 @@
/*
* Block driver for the various disk image formats used by Bochs
* Currently only for "growing" type in read-only mode
- *
+ *
* Copyright (c) 2005 Alex Beregszaszi
- *
+ *
* 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
@@ -44,7 +44,7 @@ struct bochs_header_v1 {
char subtype[16]; // "Undoable" / "Volatile" / "Growing"
uint32_t version;
uint32_t header; // size of header
-
+
union {
struct {
uint32_t catalog; // num of entries
@@ -64,7 +64,7 @@ struct bochs_header {
char subtype[16]; // "Undoable" / "Volatile" / "Growing"
uint32_t version;
uint32_t header; // size of header
-
+
union {
struct {
uint32_t catalog; // num of entries
@@ -83,9 +83,9 @@ typedef struct BDRVBochsState {
uint32_t *catalog_bitmap;
int catalog_size;
-
+
int data_offset;
-
+
int bitmap_blocks;
int extent_blocks;
int extent_size;
@@ -94,7 +94,7 @@ typedef struct BDRVBochsState {
static int bochs_probe(const uint8_t *buf, int buf_size, const char *filename)
{
const struct bochs_header *bochs = (const void *)buf;
-
+
if (buf_size < HEADER_SIZE)
return 0;
@@ -121,9 +121,9 @@ static int bochs_open(BlockDriverState *bs, const char *filename, int flags)
if (fd < 0)
return -1;
}
-
+
bs->read_only = 1; // no write support yet
-
+
s->fd = fd;
if (read(fd, &bochs, sizeof(bochs)) != sizeof(bochs)) {
@@ -161,7 +161,7 @@ static int bochs_open(BlockDriverState *bs, const char *filename, int flags)
s->bitmap_blocks = 1 + (le32_to_cpu(bochs.extra.redolog.bitmap) - 1) / 512;
s->extent_blocks = 1 + (le32_to_cpu(bochs.extra.redolog.extent) - 1) / 512;
-
+
s->extent_size = le32_to_cpu(bochs.extra.redolog.extent);
return 0;
@@ -180,7 +180,7 @@ static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
// seek to sector
extent_index = offset / s->extent_size;
extent_offset = (offset % s->extent_size) / 512;
-
+
if (s->catalog_bitmap[extent_index] == 0xffffffff)
{
// fprintf(stderr, "page not allocated [%x - %x:%x]\n",
@@ -191,17 +191,17 @@ static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
bitmap_offset = s->data_offset + (512 * s->catalog_bitmap[extent_index] *
(s->extent_blocks + s->bitmap_blocks));
block_offset = bitmap_offset + (512 * (s->bitmap_blocks + extent_offset));
-
+
// fprintf(stderr, "sect: %x [ext i: %x o: %x] -> %x bitmap: %x block: %x\n",
// sector_num, extent_index, extent_offset,
// le32_to_cpu(s->catalog_bitmap[extent_index]),
// bitmap_offset, block_offset);
-
+
// read in bitmap for current extent
lseek(s->fd, bitmap_offset + (extent_offset / 8), SEEK_SET);
-
+
read(s->fd, &bitmap_entry, 1);
-
+
if (!((bitmap_entry >> (extent_offset % 8)) & 1))
{
// fprintf(stderr, "sector (%x) in bitmap not allocated\n",
@@ -210,11 +210,11 @@ static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
}
lseek(s->fd, block_offset, SEEK_SET);
-
+
return 0;
}
-static int bochs_read(BlockDriverState *bs, int64_t sector_num,
+static int bochs_read(BlockDriverState *bs, int64_t sector_num,
uint8_t *buf, int nb_sectors)
{
BDRVBochsState *s = bs->opaque;