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Diffstat (limited to 'block.c')
-rw-r--r--block.c85
1 files changed, 48 insertions, 37 deletions
diff --git a/block.c b/block.c
index 7c744c7409..bcd8431f1e 100644
--- a/block.c
+++ b/block.c
@@ -311,8 +311,6 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags)
int ret;
bs = bdrv_new("");
- if (!bs)
- return -ENOMEM;
ret = bdrv_open2(bs, filename, flags | BDRV_O_FILE, NULL);
if (ret < 0) {
bdrv_delete(bs);
@@ -338,6 +336,7 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
bs->read_only = 0;
bs->is_temporary = 0;
bs->encrypted = 0;
+ bs->valid_key = 0;
if (flags & BDRV_O_SNAPSHOT) {
BlockDriverState *bs1;
@@ -349,12 +348,10 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
/* if there is a backing file, use it */
bs1 = bdrv_new("");
- if (!bs1) {
- return -ENOMEM;
- }
- if (bdrv_open(bs1, filename, 0) < 0) {
+ ret = bdrv_open(bs1, filename, 0);
+ if (ret < 0) {
bdrv_delete(bs1);
- return -1;
+ return ret;
}
total_size = bdrv_getlength(bs1) >> SECTOR_BITS;
@@ -372,9 +369,10 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
else
realpath(filename, backing_filename);
- if (bdrv_create(&bdrv_qcow2, tmp_filename,
- total_size, backing_filename, 0) < 0) {
- return -1;
+ ret = bdrv_create(&bdrv_qcow2, tmp_filename,
+ total_size, backing_filename, 0);
+ if (ret < 0) {
+ return ret;
}
filename = tmp_filename;
bs->is_temporary = 1;
@@ -383,14 +381,12 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
pstrcpy(bs->filename, sizeof(bs->filename), filename);
if (flags & BDRV_O_FILE) {
drv = find_protocol(filename);
- if (!drv)
- return -ENOENT;
- } else {
- if (!drv) {
- drv = find_image_format(filename);
- if (!drv)
- return -1;
- }
+ } else if (!drv) {
+ drv = find_image_format(filename);
+ }
+ if (!drv) {
+ ret = -ENOENT;
+ goto unlink_and_fail;
}
bs->drv = drv;
bs->opaque = qemu_mallocz(drv->instance_size);
@@ -409,6 +405,9 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
qemu_free(bs->opaque);
bs->opaque = NULL;
bs->drv = NULL;
+ unlink_and_fail:
+ if (bs->is_temporary)
+ unlink(filename);
return ret;
}
if (drv->bdrv_getlength) {
@@ -422,15 +421,13 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
if (bs->backing_file[0] != '\0') {
/* if there is a backing file, use it */
bs->backing_hd = bdrv_new("");
- if (!bs->backing_hd) {
- fail:
- bdrv_close(bs);
- return -ENOMEM;
- }
path_combine(backing_filename, sizeof(backing_filename),
filename, bs->backing_file);
- if (bdrv_open(bs->backing_hd, backing_filename, open_flags) < 0)
- goto fail;
+ ret = bdrv_open(bs->backing_hd, backing_filename, open_flags);
+ if (ret < 0) {
+ bdrv_close(bs);
+ return ret;
+ }
}
/* call the change callback */
@@ -970,6 +967,15 @@ int bdrv_is_encrypted(BlockDriverState *bs)
return bs->encrypted;
}
+int bdrv_key_required(BlockDriverState *bs)
+{
+ BlockDriverState *backing_hd = bs->backing_hd;
+
+ if (backing_hd && backing_hd->encrypted && !backing_hd->valid_key)
+ return 1;
+ return (bs->encrypted && !bs->valid_key);
+}
+
int bdrv_set_key(BlockDriverState *bs, const char *key)
{
int ret;
@@ -982,7 +988,9 @@ int bdrv_set_key(BlockDriverState *bs, const char *key)
}
if (!bs->encrypted || !bs->drv || !bs->drv->bdrv_set_key)
return -1;
- return bs->drv->bdrv_set_key(bs, key);
+ ret = bs->drv->bdrv_set_key(bs, key);
+ bs->valid_key = (ret == 0);
+ return ret;
}
void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size)
@@ -1015,12 +1023,12 @@ BlockDriverState *bdrv_find(const char *name)
return NULL;
}
-void bdrv_iterate(void (*it)(void *opaque, const char *name), void *opaque)
+void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), void *opaque)
{
BlockDriverState *bs;
for (bs = bdrv_first; bs != NULL; bs = bs->next) {
- it(opaque, bs->device_name);
+ it(opaque, bs);
}
}
@@ -1105,8 +1113,7 @@ void bdrv_info(void)
}
term_printf(" ro=%d", bs->read_only);
term_printf(" drv=%s", bs->drv->format_name);
- if (bs->encrypted)
- term_printf(" encrypted");
+ term_printf(" encrypted=%d", bdrv_is_encrypted(bs));
} else {
term_printf(" [not inserted]");
}
@@ -1118,7 +1125,6 @@ void bdrv_info(void)
void bdrv_info_stats (void)
{
BlockDriverState *bs;
- BlockDriverInfo bdi;
for (bs = bdrv_first; bs != NULL; bs = bs->next) {
term_printf ("%s:"
@@ -1126,18 +1132,23 @@ void bdrv_info_stats (void)
" wr_bytes=%" PRIu64
" rd_operations=%" PRIu64
" wr_operations=%" PRIu64
- ,
+ "\n",
bs->device_name,
bs->rd_bytes, bs->wr_bytes,
bs->rd_ops, bs->wr_ops);
- if (bdrv_get_info(bs, &bdi) == 0)
- term_printf(" high=%" PRId64
- " bytes_free=%" PRId64,
- bdi.highest_alloc, bdi.num_free_bytes);
- term_printf("\n");
}
}
+const char *bdrv_get_encrypted_filename(BlockDriverState *bs)
+{
+ if (bs->backing_hd && bs->backing_hd->encrypted)
+ return bs->backing_file;
+ else if (bs->encrypted)
+ return bs->filename;
+ else
+ return NULL;
+}
+
void bdrv_get_backing_filename(BlockDriverState *bs,
char *filename, int filename_size)
{