block: Change blk_{pread,pwrite}() param order

Swap 'buf' and 'bytes' around for consistency with
blk_co_{pread,pwrite}(), and in preparation to implement these functions
using generated_co_wrapper.

Callers were updated using this Coccinelle script:

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

    @@ expression blk, offset, buf, bytes, flags; @@
    - blk_pwrite(blk, offset, buf, bytes, flags)
    + blk_pwrite(blk, offset, bytes, buf, flags)

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: Eric Blake <eblake@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-4-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

1 files changed, 9 insertions, 9 deletions

diff --git a/qemu-img.c b/qemu-img.c
index a0c0e89..df607a2 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, 0);
+    ret = blk_pread(blk, offset, bytes, buffer, 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, 0);
+                ret = blk_pread(blk1, offset, chunk, buf1, 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, 0);
+                ret = blk_pread(blk2, offset, chunk, buf2, 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, 0);
+                ret = blk_pread(blk_old_backing, offset, n, buf_old, 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, 0);
+                ret = blk_pread(blk_new_backing, offset, n, buf_new, 0);
                 if (ret < 0) {
                     error_report("error while reading from new backing file");
                     goto out;
@@ -3812,8 +3812,8 @@ static int img_rebase(int argc, char **argv)
                     if (buf_old_is_zero) {
                         ret = blk_pwrite_zeroes(blk, offset + written, pnum, 0);
                     } else {
-                        ret = blk_pwrite(blk, offset + written,
-                                         buf_old + written, pnum, 0);
+                        ret = blk_pwrite(blk, offset + written, pnum,
+                                         buf_old + written, 0);
                     }
                     if (ret < 0) {
                         error_report("Error while writing to COW image: %s",
@@ -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, 0);
+        ret = blk_pread(blk1, in_pos, bytes, in.buf, 0);
         if (ret < 0) {
             error_report("error while reading from input image file: %s",
                          strerror(-ret));
@@ -5130,7 +5130,7 @@ static int img_dd(int argc, char **argv)
         }
         in_pos += bytes;
 
-        ret = blk_pwrite(blk2, out_pos, in.buf, bytes, 0);
+        ret = blk_pwrite(blk2, out_pos, bytes, in.buf, 0);
         if (ret < 0) {
             error_report("error while writing to output image file: %s",
                          strerror(-ret));