error: Use error_reportf_err() where it makes obvious sense

Done with this Coccinelle semantic patch

    @@
    expression FMT, E, S;
    expression list ARGS;
    @@
    -    error_report(FMT, ARGS, error_get_pretty(E));
    +    error_reportf_err(E, FMT/*@@@*/, ARGS);
    (
    -    error_free(E);
    |
	 exit(S);
    |
	 abort();
    )

followed by a replace of '%s"/*@@@*/' by '"' and some line rewrapping,
because I can't figure out how to make Coccinelle transform strings.

We now use the error whole instead of just its message obtained with
error_get_pretty().  This avoids suppressing its hint (see commit
50b7b00), but I can't see how the errors touched in this commit could
come with hints.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1450452927-8346-12-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

1 files changed, 13 insertions, 20 deletions

diff --git a/qemu-img.c b/qemu-img.c
index f4f5540b87..a5949e6b05 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -213,9 +213,7 @@ static BlockBackend *img_open(const char *id, const char *filename,
 
     blk = blk_new_open(id, filename, NULL, options, flags, &local_err);
     if (!blk) {
-        error_report("Could not open '%s': %s", filename,
-                     error_get_pretty(local_err));
-        error_free(local_err);
+        error_reportf_err(local_err, "Could not open '%s': ", filename);
         goto fail;
     }
 
@@ -360,8 +358,7 @@ static int img_create(int argc, char **argv)
     bdrv_img_create(filename, fmt, base_filename, base_fmt,
                     options, img_size, BDRV_O_FLAGS, &local_err, quiet);
     if (local_err) {
-        error_report("%s: %s", filename, error_get_pretty(local_err));
-        error_free(local_err);
+        error_reportf_err(local_err, "%s: ", filename);
         goto fail;
     }
 
@@ -1711,9 +1708,7 @@ static int img_convert(int argc, char **argv)
         bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err);
     }
     if (local_err) {
-        error_report("Failed to load snapshot: %s",
-                     error_get_pretty(local_err));
-        error_free(local_err);
+        error_reportf_err(local_err, "Failed to load snapshot: ");
         ret = -1;
         goto out;
     }
@@ -1809,9 +1804,8 @@ static int img_convert(int argc, char **argv)
         /* Create the new image */
         ret = bdrv_create(drv, out_filename, opts, &local_err);
         if (ret < 0) {
-            error_report("%s: error while converting %s: %s",
-                         out_filename, out_fmt, error_get_pretty(local_err));
-            error_free(local_err);
+            error_reportf_err(local_err, "%s: error while converting %s: ",
+                              out_filename, out_fmt);
             goto out;
         }
     }
@@ -2439,9 +2433,8 @@ static int img_snapshot(int argc, char **argv)
     case SNAPSHOT_DELETE:
         bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err);
         if (err) {
-            error_report("Could not delete snapshot '%s': %s",
-                         snapshot_name, error_get_pretty(err));
-            error_free(err);
+            error_reportf_err(err, "Could not delete snapshot '%s': ",
+                              snapshot_name);
             ret = 1;
         }
         break;
@@ -2574,9 +2567,9 @@ static int img_rebase(int argc, char **argv)
         blk_old_backing = blk_new_open("old_backing", backing_name, NULL,
                                        options, src_flags, &local_err);
         if (!blk_old_backing) {
-            error_report("Could not open old backing file '%s': %s",
-                         backing_name, error_get_pretty(local_err));
-            error_free(local_err);
+            error_reportf_err(local_err,
+                              "Could not open old backing file '%s': ",
+                              backing_name);
             goto out;
         }
 
@@ -2591,9 +2584,9 @@ static int img_rebase(int argc, char **argv)
             blk_new_backing = blk_new_open("new_backing", out_baseimg, NULL,
                                            options, src_flags, &local_err);
             if (!blk_new_backing) {
-                error_report("Could not open new backing file '%s': %s",
-                             out_baseimg, error_get_pretty(local_err));
-                error_free(local_err);
+                error_reportf_err(local_err,
+                                  "Could not open new backing file '%s': ",
+                                  out_baseimg);
                 goto out;
             }
         }