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authorMarkus Armbruster <armbru@redhat.com>2015-12-18 16:35:15 +0100
committerMarkus Armbruster <armbru@redhat.com>2016-01-13 15:16:17 +0100
commite43bfd9c876676e884b561eca009a571992a4b76 (patch)
tree10fb32df04ffc41e124b1c1807017788168722ad /block.c
parentc29b77f955ff2f7b57c1e71e9dc26243eefd0b28 (diff)
downloadqemu-arm-e43bfd9c876676e884b561eca009a571992a4b76.tar.gz
error: Use error_prepend() where it makes obvious sense
Done with this Coccinelle semantic patch @@ expression FMT, E1, E2; expression list ARGS; @@ - error_setg(E1, FMT, ARGS, error_get_pretty(E2)); + error_propagate(E1, E2);/*###*/ + error_prepend(E1, FMT/*@@@*/, ARGS); followed by manual cleanup, first because I can't figure out how to make Coccinelle transform strings, and second to get rid of now superfluous error_propagate(). We now use or propagate the original 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. It also improves the message printed with &error_abort when we screw up (see commit 1e9b65b). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r--block.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/block.c b/block.c
index b2bdff90e4..54c37f9629 100644
--- a/block.c
+++ b/block.c
@@ -1349,12 +1349,10 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options,
ret = bdrv_open_inherit(&backing_hd,
*backing_filename ? backing_filename : NULL,
reference, options, 0, bs, &child_backing,
- &local_err);
+ errp);
if (ret < 0) {
bs->open_flags |= BDRV_O_NO_BACKING;
- error_setg(errp, "Could not open backing file: %s",
- error_get_pretty(local_err));
- error_free(local_err);
+ error_prepend(errp, "Could not open backing file: ");
goto free_exit;
}
@@ -1460,12 +1458,11 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp)
opts = qemu_opts_create(bdrv_qcow2.create_opts, NULL, 0,
&error_abort);
qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_size, &error_abort);
- ret = bdrv_create(&bdrv_qcow2, tmp_filename, opts, &local_err);
+ ret = bdrv_create(&bdrv_qcow2, tmp_filename, opts, errp);
qemu_opts_del(opts);
if (ret < 0) {
- error_setg(errp, "Could not create temporary overlay '%s': %s",
- tmp_filename, error_get_pretty(local_err));
- error_free(local_err);
+ error_prepend(errp, "Could not create temporary overlay '%s': ",
+ tmp_filename);
goto out;
}
@@ -3729,9 +3726,9 @@ bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp)
if (!QLIST_EMPTY(&bs->op_blockers[op])) {
blocker = QLIST_FIRST(&bs->op_blockers[op]);
if (errp) {
- error_setg(errp, "Node '%s' is busy: %s",
- bdrv_get_device_or_node_name(bs),
- error_get_pretty(blocker->reason));
+ *errp = error_copy(blocker->reason);
+ error_prepend(errp, "Node '%s' is busy: ",
+ bdrv_get_device_or_node_name(bs));
}
return true;
}