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| author | Vladimir Sementsov-Ogievskiy | 2020-12-11 19:39:20 +0100 |
|---|---|---|
| committer | Eric Blake | 2021-02-03 15:00:33 +0100 |
| commit | 4c002cef0e9abe7135d7916c51abce47f7fc1ee2 (patch) | |
| tree | cd2bfc6b897f859e5c26f9c3b761c540a20f97cf /include/qemu | |
| parent | block: refactor bdrv_check_request: add errp (diff) | |
| download | qemu-4c002cef0e9abe7135d7916c51abce47f7fc1ee2.tar.gz qemu-4c002cef0e9abe7135d7916c51abce47f7fc1ee2.tar.xz qemu-4c002cef0e9abe7135d7916c51abce47f7fc1ee2.zip | |
util/iov: make qemu_iovec_init_extended() honest
Actually, we can't extend the io vector in all cases. Handle possible
MAX_IOV and size_t overflows.
For now add assertion to callers (actually they rely on success anyway)
and fix them in the following patch.
Add also some additional good assertions to qemu_iovec_init_slice()
while being here.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-3-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'include/qemu')
| -rw-r--r-- | include/qemu/iov.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/qemu/iov.h b/include/qemu/iov.h index b6b283a5e5..9330746680 100644 --- a/include/qemu/iov.h +++ b/include/qemu/iov.h @@ -222,7 +222,7 @@ static inline void *qemu_iovec_buf(QEMUIOVector *qiov) void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint); void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov); -void qemu_iovec_init_extended( +int qemu_iovec_init_extended( QEMUIOVector *qiov, void *head_buf, size_t head_len, QEMUIOVector *mid_qiov, size_t mid_offset, size_t mid_len, |