block: Add a 'flags' param to blk_pread()

For consistency with other I/O functions, and in preparation to
implement it using generated_co_wrapper.

Callers were updated using this Coccinelle script:

    @@ expression blk, offset, buf, bytes; @@
    - blk_pread(blk, offset, buf, bytes)
    + blk_pread(blk, offset, buf, bytes, 0)

It had no effect on hw/block/nand.c, presumably due to the #if, so that
file was updated manually.

Overly-long lines were then fixed by hand.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-3-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/qemu-img.c b/qemu-img.c
index 2dc07e5ac3..a0c0e8914e 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -1309,7 +1309,7 @@ static int check_empty_sectors(BlockBackend *blk, int64_t offset,
     int ret = 0;
     int64_t idx;
 
-    ret = blk_pread(blk, offset, buffer, bytes);
+    ret = blk_pread(blk, offset, buffer, bytes, 0);
     if (ret < 0) {
         error_report("Error while reading offset %" PRId64 " of %s: %s",
                      offset, filename, strerror(-ret));
@@ -1526,7 +1526,7 @@ static int img_compare(int argc, char **argv)
                 int64_t pnum;
 
                 chunk = MIN(chunk, IO_BUF_SIZE);
-                ret = blk_pread(blk1, offset, buf1, chunk);
+                ret = blk_pread(blk1, offset, buf1, chunk, 0);
                 if (ret < 0) {
                     error_report("Error while reading offset %" PRId64
                                  " of %s: %s",
@@ -1534,7 +1534,7 @@ static int img_compare(int argc, char **argv)
                     ret = 4;
                     goto out;
                 }
-                ret = blk_pread(blk2, offset, buf2, chunk);
+                ret = blk_pread(blk2, offset, buf2, chunk, 0);
                 if (ret < 0) {
                     error_report("Error while reading offset %" PRId64
                                  " of %s: %s",
@@ -3779,7 +3779,7 @@ static int img_rebase(int argc, char **argv)
                     n = old_backing_size - offset;
                 }
 
-                ret = blk_pread(blk_old_backing, offset, buf_old, n);
+                ret = blk_pread(blk_old_backing, offset, buf_old, n, 0);
                 if (ret < 0) {
                     error_report("error while reading from old backing file");
                     goto out;
@@ -3793,7 +3793,7 @@ static int img_rebase(int argc, char **argv)
                     n = new_backing_size - offset;
                 }
 
-                ret = blk_pread(blk_new_backing, offset, buf_new, n);
+                ret = blk_pread(blk_new_backing, offset, buf_new, n, 0);
                 if (ret < 0) {
                     error_report("error while reading from new backing file");
                     goto out;
@@ -5122,7 +5122,7 @@ static int img_dd(int argc, char **argv)
     for (out_pos = 0; in_pos < size; block_count++) {
         int bytes = (in_pos + in.bsz > size) ? size - in_pos : in.bsz;
 
-        ret = blk_pread(blk1, in_pos, in.buf, bytes);
+        ret = blk_pread(blk1, in_pos, in.buf, bytes, 0);
         if (ret < 0) {
             error_report("error while reading from input image file: %s",
                          strerror(-ret));