static const mon_cmd_t *monitor_parse_command(Monitor *mon, const char *cmdline, int start, mon_cmd_t *table, QDict *qdict) { const char *p, *typestr; int c; const mon_cmd_t *cmd; char cmdname[256]; char buf[1024]; char *key; /* extract the command name */ p = get_command_name(cmdline + start, cmdname, sizeof(cmdname)); if (!p) return NULL; cmd = search_dispatch_table(table, cmdname); if (!cmd) { monitor_printf(mon, "unknown command: '%.*s'\n", (int)(p - cmdline), cmdline); return NULL; } /* filter out following useless space */ while (qemu_isspace(*p)) { p++; } /* search sub command */ if (cmd->sub_table != NULL) { /* check if user set additional command */ if (*p == '\0') { return cmd; } return monitor_parse_command(mon, cmdline, p - cmdline, cmd->sub_table, qdict); } /* parse the parameters */ typestr = cmd->args_type; for(;;) { typestr = key_get_info(typestr, &key); if (!typestr) break; c = *typestr; typestr++; switch(c) { case 'F': case 'B': case 's': { int ret; while (qemu_isspace(*p)) p++; if (*typestr == '?') { typestr++; if (*p == '\0') { /* no optional string: NULL argument */ break; } } ret = get_str(buf, sizeof(buf), &p); if (ret < 0) { switch(c) { case 'F': monitor_printf(mon, "%s: filename expected\n", cmdname); break; case 'B': monitor_printf(mon, "%s: block device name expected\n", cmdname); break; default: monitor_printf(mon, "%s: string expected\n", cmdname); break; } goto fail; } qdict_put(qdict, key, qstring_from_str(buf)); } break; case 'O': { QemuOptsList *opts_list; QemuOpts *opts; opts_list = qemu_find_opts(key); if (!opts_list || opts_list->desc->name) { goto bad_type; } while (qemu_isspace(*p)) { p++; } if (!*p) break; if (get_str(buf, sizeof(buf), &p) < 0) { goto fail; } opts = qemu_opts_parse(opts_list, buf, 1); if (!opts) { goto fail; } qemu_opts_to_qdict(opts, qdict); qemu_opts_del(opts); } break; case '/': { int count, format, size; while (qemu_isspace(*p)) p++; if (*p == '/') { /* format found */ p++; count = 1; if (qemu_isdigit(*p)) { count = 0; while (qemu_isdigit(*p)) { count = count * 10 + (*p - '0'); p++; } } size = -1; format = -1; for(;;) { switch(*p) { case 'o': case 'd': case 'u': case 'x': case 'i': case 'c': format = *p++; break; case 'b': size = 1; p++; break; case 'h': size = 2; p++; break; case 'w': size = 4; p++; break; case 'g': case 'L': size = 8; p++; break; default: goto next; } } next: if (*p != '\0' && !qemu_isspace(*p)) { monitor_printf(mon, "invalid char in format: '%c'\n", *p); goto fail; } if (format < 0) format = default_fmt_format; if (format != 'i') { /* for 'i', not specifying a size gives -1 as size */ if (size < 0) size = default_fmt_size; default_fmt_size = size; } default_fmt_format = format; } else { count = 1; format = default_fmt_format; if (format != 'i') { size = default_fmt_size; } else { size = -1; } } qdict_put(qdict, "count", qint_from_int(count)); qdict_put(qdict, "format", qint_from_int(format)); qdict_put(qdict, "size", qint_from_int(size)); } break; case 'i': case 'l': case 'M': { int64_t val; while (qemu_isspace(*p)) p++; if (*typestr == '?' || *typestr == '.') { if (*typestr == '?') { if (*p == '\0') { typestr++; break; } } else { if (*p == '.') { p++; while (qemu_isspace(*p)) p++; } else { typestr++; break; } } typestr++; } if (get_expr(mon, &val, &p)) goto fail; /* Check if 'i' is greater than 32-bit */ if ((c == 'i') && ((val >> 32) & 0xffffffff)) { monitor_printf(mon, "\'%s\' has failed: ", cmdname); monitor_printf(mon, "integer is for 32-bit values\n"); goto fail; } else if (c == 'M') { if (val < 0) { monitor_printf(mon, "enter a positive value\n"); goto fail; } val <<= 20; } qdict_put(qdict, key, qint_from_int(val)); } break; case 'o': { int64_t val; char *end; while (qemu_isspace(*p)) { p++; } if (*typestr == '?') { typestr++; if (*p == '\0') { break; } } val = strtosz(p, &end); if (val < 0) { monitor_printf(mon, "invalid size\n"); goto fail; } qdict_put(qdict, key, qint_from_int(val)); p = end; } break; case 'T': { double val; while (qemu_isspace(*p)) p++; if (*typestr == '?') { typestr++; if (*p == '\0') { break; } } if (get_double(mon, &val, &p) < 0) { goto fail; } if (p[0] && p[1] == 's') { switch (*p) { case 'm': val /= 1e3; p += 2; break; case 'u': val /= 1e6; p += 2; break; case 'n': val /= 1e9; p += 2; break; } } if (*p && !qemu_isspace(*p)) { monitor_printf(mon, "Unknown unit suffix\n"); goto fail; } qdict_put(qdict, key, qfloat_from_double(val)); } break; case 'b': { const char *beg; bool val; while (qemu_isspace(*p)) { p++; } beg = p; while (qemu_isgraph(*p)) { p++; } if (p - beg == 2 && !memcmp(beg, "on", p - beg)) { val = true; } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) { val = false; } else { monitor_printf(mon, "Expected 'on' or 'off'\n"); goto fail; } qdict_put(qdict, key, qbool_from_bool(val)); } break; case '-': { const char *tmp = p; int skip_key = 0; /* option */ c = *typestr++; if (c == '\0') goto bad_type; while (qemu_isspace(*p)) p++; if (*p == '-') { p++; if(c != *p) { if(!is_valid_option(p, typestr)) { monitor_printf(mon, "%s: unsupported option -%c\n", cmdname, *p); goto fail; } else { skip_key = 1; } } if(skip_key) { p = tmp; } else { /* has option */ p++; qdict_put(qdict, key, qbool_from_bool(true)); } } } break; case 'S': { /* package all remaining string */ int len; while (qemu_isspace(*p)) { p++; } if (*typestr == '?') { typestr++; if (*p == '\0') { /* no remaining string: NULL argument */ break; } } len = strlen(p); if (len <= 0) { monitor_printf(mon, "%s: string expected\n", cmdname); break; } qdict_put(qdict, key, qstring_from_str(p)); p += len; } break; default: bad_type: monitor_printf(mon, "%s: unknown type '%c'\n", cmdname, c); goto fail; } g_free(key); key = NULL; } /* check that all arguments were parsed */ while (qemu_isspace(*p)) p++; if (*p != '\0') { monitor_printf(mon, "%s: extraneous characters at the end of line\n", cmdname); goto fail; } return cmd; fail: g_free(key); return NULL; }