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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2012-02-07 13:27:24 +0000
committerKevin Wolf <kwolf@redhat.com>2012-02-09 16:17:50 +0100
commit1a6d39fd71ddf90c5b76026cac4d5ff51fbaf8d8 (patch)
tree9b15c86f85e8141f3a20cbf9f52ea21a0719e598 /qemu-common.h
parent7a65c8cc315c76bde6d692845c12e7ba06f44f89 (diff)
cutils: extract buffer_is_zero() from qemu-img.c
The qemu-img.c:is_not_zero() function checks if a buffer contains all zeroes. This function will come in handy for zero-detection in the block layer, so clean it up and move it to cutils.c. Note that the function now returns true if the buffer is all zeroes. This avoids the double-negatives (i.e. !is_not_zero()) that the old function can cause in callers. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-common.h')
-rw-r--r--qemu-common.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/qemu-common.h b/qemu-common.h
index 9b997f8838..c5e9cad35e 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -335,6 +335,8 @@ void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
size_t skip);
+bool buffer_is_zero(const void *buf, size_t len);
+
void qemu_progress_init(int enabled, float min_skip);
void qemu_progress_end(void);
void qemu_progress_print(float delta, int max);