Instead of returning a pointer to the filename, copy it into a buffer
specified by the caller.
Signed-off-by: Max Reitz <address@hidden>
---
block.c | 24 +++++++++++++++++-------
include/block/block.h | 2 +-
monitor.c | 4 +++-
3 files changed, 21 insertions(+), 9 deletions(-)
diff --git a/block.c b/block.c
index d088ee0..e7dd2f1 100644
--- a/block.c
+++ b/block.c
@@ -2760,10 +2760,12 @@ void bdrv_add_key(BlockDriverState *bs, const char
*key, Error **errp)
}
} else {
if (bdrv_key_required(bs)) {
+ char enc_filename[PATH_MAX];
+ bdrv_get_encrypted_filename(bs, enc_filename,
sizeof(enc_filename));
error_set(errp, ERROR_CLASS_DEVICE_ENCRYPTED,
"'%s' (%s) is encrypted",
bdrv_get_device_or_node_name(bs),
- bdrv_get_encrypted_filename(bs));
+ enc_filename);
}
}
}
@@ -2980,14 +2982,22 @@ bool bdrv_can_write_zeroes_with_unmap(BlockDriverState
*bs)
return false;
}
-const char *bdrv_get_encrypted_filename(BlockDriverState *bs)
+char *bdrv_get_encrypted_filename(BlockDriverState *bs, char *dest, size_t sz)
{
- if (bs->backing_hd && bs->backing_hd->encrypted)
- return bs->backing_file;
- else if (bs->encrypted)
- return bs->filename;
- else
+ if (sz > INT_MAX) {
+ sz = INT_MAX;
+ }
+
+ if (bs->backing_hd && bs->backing_hd->encrypted) {
+ pstrcpy(dest, sz, bs->backing_file);
+ return dest;
+ } else if (bs->encrypted) {
+ pstrcpy(dest, sz, bs->filename);
+ return dest;
+ } else {
+ dest[0] = '\0';
return NULL;
+ }
}
void bdrv_get_backing_filename(BlockDriverState *bs,
diff --git a/include/block/block.h b/include/block/block.h
index 37916f7..a78e4f1 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -430,7 +430,7 @@ void bdrv_round_to_clusters(BlockDriverState *bs,
int64_t *cluster_sector_num,
int *cluster_nb_sectors);
-const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
+char *bdrv_get_encrypted_filename(BlockDriverState *bs, char *dest, size_t sz);
void bdrv_get_backing_filename(BlockDriverState *bs,
char *filename, int filename_size);
void bdrv_get_full_backing_filename(BlockDriverState *bs,
diff --git a/monitor.c b/monitor.c
index aeea2b5..cfdf781 100644
--- a/monitor.c
+++ b/monitor.c
@@ -5292,10 +5292,12 @@ int monitor_read_bdrv_key_start(Monitor *mon,
BlockDriverState *bs,
BlockCompletionFunc *completion_cb,
void *opaque)
{
+ char enc_filename[PATH_MAX];