diff options
| -rw-r--r-- | include/qapi/hmp-output-visitor.h | 30 | ||||
| -rw-r--r-- | net/net.c | 31 | ||||
| -rw-r--r-- | qapi/hmp-output-visitor.c | 193 | ||||
| -rw-r--r-- | qapi/meson.build | 1 |
4 files changed, 254 insertions, 1 deletions
diff --git a/include/qapi/hmp-output-visitor.h b/include/qapi/hmp-output-visitor.h new file mode 100644 index 0000000000..541e4002e3 --- /dev/null +++ b/include/qapi/hmp-output-visitor.h @@ -0,0 +1,30 @@ +/* + * HMP string output Visitor + * + * Copyright Yandex N.V., 2021 + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef HMP_OUTPUT_VISITOR_H +#define HMP_OUTPUT_VISITOR_H + +#include "qapi/visitor.h" + +typedef struct HMPOutputVisitor HMPOutputVisitor; + +/** + * Create a HMP string output visitor for @obj + * + * Flattens dicts/structures, only shows arrays borders. + * + * Errors are not expected to happen. + * + * The caller is responsible for freeing the visitor with + * visit_free(). + */ +Visitor *hmp_output_visitor_new(char **result); + +#endif @@ -55,6 +55,7 @@ #include "sysemu/sysemu.h" #include "net/filter.h" #include "qapi/string-output-visitor.h" +#include "qapi/hmp-output-visitor.h" /* Net bridge is currently not supported for W32. */ #if !defined(_WIN32) @@ -1221,14 +1222,42 @@ static void netfilter_print_info(Monitor *mon, NetFilterState *nf) monitor_printf(mon, "\n"); } +static char *generate_info_str(NetClientState *nc) +{ + NetdevInfo *ni = nc->stored_config; + char *ret_out = NULL; + Visitor *v; + + /* Use legacy field info_str for NIC and hubports */ + if ((nc->info->type == NET_CLIENT_DRIVER_NIC) || + (nc->info->type == NET_CLIENT_DRIVER_HUBPORT)) { + return g_strdup(nc->info_str ? nc->info_str : ""); + } + + if (!ni) { + return g_malloc0(1); + } + + v = hmp_output_visitor_new(&ret_out); + if (visit_type_NetdevInfo(v, "", &ni, NULL)) { + visit_complete(v, &ret_out); + } + visit_free(v); + + return ret_out; +} + void print_net_client(Monitor *mon, NetClientState *nc) { NetFilterState *nf; + char *info_str = generate_info_str(nc); monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, nc->queue_index, NetClientDriver_str(nc->info->type), - nc->info_str ? nc->info_str : ""); + info_str); + g_free(info_str); + if (!QTAILQ_EMPTY(&nc->filters)) { monitor_printf(mon, "filters:\n"); } diff --git a/qapi/hmp-output-visitor.c b/qapi/hmp-output-visitor.c new file mode 100644 index 0000000000..8036605f97 --- /dev/null +++ b/qapi/hmp-output-visitor.c @@ -0,0 +1,193 @@ +/* + * HMP string output Visitor + * + * Copyright Yandex N.V., 2021 + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/cutils.h" +#include "qapi/hmp-output-visitor.h" +#include "qapi/visitor-impl.h" + +struct HMPOutputVisitor { + Visitor visitor; + char **result; + GString *buffer; + bool is_continue; +}; + +static HMPOutputVisitor *to_hov(Visitor *v) +{ + return container_of(v, HMPOutputVisitor, visitor); +} + +static void hmp_output_append_formatted(Visitor *v, const char *fmt, ...) +{ + HMPOutputVisitor *ov = to_hov(v); + va_list args; + + if (ov->is_continue) { + g_string_append(ov->buffer, ","); + } else { + ov->is_continue = true; + } + + va_start(args, fmt); + g_string_append_vprintf(ov->buffer, fmt, args); + va_end(args); +} + +static void hmp_output_skip_comma(Visitor *v) +{ + HMPOutputVisitor *ov = to_hov(v); + + ov->is_continue = false; +} + +static bool hmp_output_start_struct(Visitor *v, const char *name, + void **obj, size_t unused, Error **errp) +{ + return true; +} + +static void hmp_output_end_struct(Visitor *v, void **obj) {} + +static bool hmp_output_start_list(Visitor *v, const char *name, + GenericList **listp, size_t size, + Error **errp) +{ + hmp_output_append_formatted(v, "%s=[", name); + /* First element in array without comma before it */ + hmp_output_skip_comma(v); + + return true; +} + +static GenericList *hmp_output_next_list(Visitor *v, GenericList *tail, + size_t size) +{ + return tail->next; +} + +static void hmp_output_end_list(Visitor *v, void **obj) +{ + /* Don't need comma after last array element */ + hmp_output_skip_comma(v); + hmp_output_append_formatted(v, "]"); +} + +static bool hmp_output_type_int64(Visitor *v, const char *name, + int64_t *obj, Error **errp) +{ + hmp_output_append_formatted(v, "%s=%" PRId64, name, *obj); + + return true; +} + +static bool hmp_output_type_uint64(Visitor *v, const char *name, + uint64_t *obj, Error **errp) +{ + hmp_output_append_formatted(v, "%s=%" PRIu64, name, *obj); + + return true; +} + +static bool hmp_output_type_bool(Visitor *v, const char *name, bool *obj, + Error **errp) +{ + hmp_output_append_formatted(v, "%s=%s", name, *obj ? "true" : "false"); + + return true; +} + +static bool hmp_output_type_str(Visitor *v, const char *name, char **obj, + Error **errp) +{ + /* Skip already printed or unused fields */ + if (!*obj || g_str_equal(name, "id") || g_str_equal(name, "type")) { + return true; + } + + /* Do not print stub name for StringList elements */ + if (g_str_equal(name, "str")) { + hmp_output_append_formatted(v, "%s", *obj); + } else { + hmp_output_append_formatted(v, "%s=%s", name, *obj); + } + + return true; +} + +static bool hmp_output_type_number(Visitor *v, const char *name, + double *obj, Error **errp) +{ + hmp_output_append_formatted(v, "%s=%.17g", name, *obj); + + return true; +} + +/* TODO: remove this function? */ +static bool hmp_output_type_any(Visitor *v, const char *name, + QObject **obj, Error **errp) +{ + return true; +} + +static bool hmp_output_type_null(Visitor *v, const char *name, + QNull **obj, Error **errp) +{ + hmp_output_append_formatted(v, "%s=NULL", name); + + return true; +} + +static void hmp_output_complete(Visitor *v, void *opaque) +{ + HMPOutputVisitor *ov = to_hov(v); + + *ov->result = g_string_free(ov->buffer, false); + ov->buffer = NULL; +} + +static void hmp_output_free(Visitor *v) +{ + HMPOutputVisitor *ov = to_hov(v); + + if (ov->buffer) { + g_string_free(ov->buffer, true); + } + g_free(v); +} + +Visitor *hmp_output_visitor_new(char **result) +{ + HMPOutputVisitor *v; + + v = g_malloc0(sizeof(*v)); + + v->visitor.type = VISITOR_OUTPUT; + v->visitor.start_struct = hmp_output_start_struct; + v->visitor.end_struct = hmp_output_end_struct; + v->visitor.start_list = hmp_output_start_list; + v->visitor.next_list = hmp_output_next_list; + v->visitor.end_list = hmp_output_end_list; + v->visitor.type_int64 = hmp_output_type_int64; + v->visitor.type_uint64 = hmp_output_type_uint64; + v->visitor.type_bool = hmp_output_type_bool; + v->visitor.type_str = hmp_output_type_str; + v->visitor.type_number = hmp_output_type_number; + v->visitor.type_any = hmp_output_type_any; + v->visitor.type_null = hmp_output_type_null; + v->visitor.complete = hmp_output_complete; + v->visitor.free = hmp_output_free; + + v->result = result; + v->buffer = g_string_new(""); + v->is_continue = false; + + return &v->visitor; +} diff --git a/qapi/meson.build b/qapi/meson.build index fcb15a78f1..d4424ae6e7 100644 --- a/qapi/meson.build +++ b/qapi/meson.build @@ -8,6 +8,7 @@ util_ss.add(files( 'qobject-output-visitor.c', 'string-input-visitor.c', 'string-output-visitor.c', + 'hmp-output-visitor.c', )) if have_system or have_tools util_ss.add(files( |