mirror of https://gitee.com/openkylin/qemu.git
574 lines
16 KiB
C
574 lines
16 KiB
C
#include "qemu-common.h"
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#include "qemu/error-report.h"
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#include "qemu/option.h"
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#include "qemu/config-file.h"
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#include "qapi/error.h"
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#include "qmp-commands.h"
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static QemuOptsList *vm_config_groups[48];
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static QemuOptsList *drive_config_groups[4];
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static QemuOptsList *find_list(QemuOptsList **lists, const char *group,
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Error **errp)
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{
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int i;
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for (i = 0; lists[i] != NULL; i++) {
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if (strcmp(lists[i]->name, group) == 0)
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break;
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}
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if (lists[i] == NULL) {
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error_setg(errp, "There is no option group '%s'", group);
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}
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return lists[i];
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}
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QemuOptsList *qemu_find_opts(const char *group)
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{
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QemuOptsList *ret;
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Error *local_err = NULL;
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ret = find_list(vm_config_groups, group, &local_err);
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if (local_err) {
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error_report_err(local_err);
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}
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return ret;
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}
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QemuOpts *qemu_find_opts_singleton(const char *group)
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{
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QemuOptsList *list;
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QemuOpts *opts;
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list = qemu_find_opts(group);
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assert(list);
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opts = qemu_opts_find(list, NULL);
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if (!opts) {
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opts = qemu_opts_create(list, NULL, 0, &error_abort);
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}
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return opts;
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}
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static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc)
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{
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CommandLineParameterInfoList *param_list = NULL, *entry;
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CommandLineParameterInfo *info;
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int i;
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for (i = 0; desc[i].name != NULL; i++) {
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info = g_malloc0(sizeof(*info));
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info->name = g_strdup(desc[i].name);
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switch (desc[i].type) {
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case QEMU_OPT_STRING:
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info->type = COMMAND_LINE_PARAMETER_TYPE_STRING;
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break;
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case QEMU_OPT_BOOL:
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info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN;
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break;
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case QEMU_OPT_NUMBER:
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info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER;
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break;
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case QEMU_OPT_SIZE:
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info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE;
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break;
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}
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if (desc[i].help) {
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info->has_help = true;
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info->help = g_strdup(desc[i].help);
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}
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if (desc[i].def_value_str) {
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info->has_q_default = true;
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info->q_default = g_strdup(desc[i].def_value_str);
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}
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entry = g_malloc0(sizeof(*entry));
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entry->value = info;
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entry->next = param_list;
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param_list = entry;
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}
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return param_list;
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}
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/* remove repeated entry from the info list */
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static void cleanup_infolist(CommandLineParameterInfoList *head)
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{
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CommandLineParameterInfoList *pre_entry, *cur, *del_entry;
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cur = head;
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while (cur->next) {
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pre_entry = head;
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while (pre_entry != cur->next) {
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if (!strcmp(pre_entry->value->name, cur->next->value->name)) {
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del_entry = cur->next;
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cur->next = cur->next->next;
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g_free(del_entry);
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break;
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}
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pre_entry = pre_entry->next;
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}
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cur = cur->next;
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}
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}
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/* merge the description items of two parameter infolists */
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static void connect_infolist(CommandLineParameterInfoList *head,
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CommandLineParameterInfoList *new)
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{
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CommandLineParameterInfoList *cur;
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cur = head;
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while (cur->next) {
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cur = cur->next;
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}
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cur->next = new;
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}
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/* access all the local QemuOptsLists for drive option */
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static CommandLineParameterInfoList *get_drive_infolist(void)
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{
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CommandLineParameterInfoList *head = NULL, *cur;
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int i;
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for (i = 0; drive_config_groups[i] != NULL; i++) {
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if (!head) {
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head = query_option_descs(drive_config_groups[i]->desc);
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} else {
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cur = query_option_descs(drive_config_groups[i]->desc);
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connect_infolist(head, cur);
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}
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}
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cleanup_infolist(head);
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return head;
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}
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/* restore machine options that are now machine's properties */
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static QemuOptsList machine_opts = {
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.merge_lists = true,
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.head = QTAILQ_HEAD_INITIALIZER(machine_opts.head),
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.desc = {
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{
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.name = "type",
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.type = QEMU_OPT_STRING,
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.help = "emulated machine"
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},{
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.name = "accel",
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.type = QEMU_OPT_STRING,
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.help = "accelerator list",
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},{
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.name = "kernel_irqchip",
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.type = QEMU_OPT_BOOL,
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.help = "use KVM in-kernel irqchip",
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},{
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.name = "kvm_shadow_mem",
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.type = QEMU_OPT_SIZE,
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.help = "KVM shadow MMU size",
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},{
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.name = "kernel",
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.type = QEMU_OPT_STRING,
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.help = "Linux kernel image file",
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},{
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.name = "initrd",
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.type = QEMU_OPT_STRING,
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.help = "Linux initial ramdisk file",
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},{
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.name = "append",
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.type = QEMU_OPT_STRING,
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.help = "Linux kernel command line",
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},{
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.name = "dtb",
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.type = QEMU_OPT_STRING,
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.help = "Linux kernel device tree file",
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},{
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.name = "dumpdtb",
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.type = QEMU_OPT_STRING,
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.help = "Dump current dtb to a file and quit",
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},{
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.name = "phandle_start",
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.type = QEMU_OPT_NUMBER,
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.help = "The first phandle ID we may generate dynamically",
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},{
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.name = "dt_compatible",
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.type = QEMU_OPT_STRING,
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.help = "Overrides the \"compatible\" property of the dt root node",
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},{
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.name = "dump-guest-core",
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.type = QEMU_OPT_BOOL,
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.help = "Include guest memory in a core dump",
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},{
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.name = "mem-merge",
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.type = QEMU_OPT_BOOL,
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.help = "enable/disable memory merge support",
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},{
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.name = "usb",
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.type = QEMU_OPT_BOOL,
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.help = "Set on/off to enable/disable usb",
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},{
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.name = "firmware",
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.type = QEMU_OPT_STRING,
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.help = "firmware image",
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},{
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.name = "iommu",
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.type = QEMU_OPT_BOOL,
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.help = "Set on/off to enable/disable Intel IOMMU (VT-d)",
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},{
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.name = "suppress-vmdesc",
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.type = QEMU_OPT_BOOL,
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.help = "Set on to disable self-describing migration",
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},{
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.name = "aes-key-wrap",
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.type = QEMU_OPT_BOOL,
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.help = "enable/disable AES key wrapping using the CPACF wrapping key",
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},{
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.name = "dea-key-wrap",
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.type = QEMU_OPT_BOOL,
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.help = "enable/disable DEA key wrapping using the CPACF wrapping key",
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},
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{ /* End of list */ }
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}
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};
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CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option,
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const char *option,
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Error **errp)
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{
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CommandLineOptionInfoList *conf_list = NULL, *entry;
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CommandLineOptionInfo *info;
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int i;
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for (i = 0; vm_config_groups[i] != NULL; i++) {
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if (!has_option || !strcmp(option, vm_config_groups[i]->name)) {
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info = g_malloc0(sizeof(*info));
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info->option = g_strdup(vm_config_groups[i]->name);
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if (!strcmp("drive", vm_config_groups[i]->name)) {
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info->parameters = get_drive_infolist();
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} else if (!strcmp("machine", vm_config_groups[i]->name)) {
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info->parameters = query_option_descs(machine_opts.desc);
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} else {
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info->parameters =
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query_option_descs(vm_config_groups[i]->desc);
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}
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entry = g_malloc0(sizeof(*entry));
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entry->value = info;
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entry->next = conf_list;
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conf_list = entry;
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}
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}
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if (conf_list == NULL) {
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error_setg(errp, "invalid option name: %s", option);
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}
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return conf_list;
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}
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QemuOptsList *qemu_find_opts_err(const char *group, Error **errp)
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{
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return find_list(vm_config_groups, group, errp);
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}
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void qemu_add_drive_opts(QemuOptsList *list)
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{
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int entries, i;
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entries = ARRAY_SIZE(drive_config_groups);
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entries--; /* keep list NULL terminated */
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for (i = 0; i < entries; i++) {
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if (drive_config_groups[i] == NULL) {
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drive_config_groups[i] = list;
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return;
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}
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}
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fprintf(stderr, "ran out of space in drive_config_groups");
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abort();
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}
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void qemu_add_opts(QemuOptsList *list)
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{
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int entries, i;
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entries = ARRAY_SIZE(vm_config_groups);
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entries--; /* keep list NULL terminated */
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for (i = 0; i < entries; i++) {
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if (vm_config_groups[i] == NULL) {
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vm_config_groups[i] = list;
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return;
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}
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}
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fprintf(stderr, "ran out of space in vm_config_groups");
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abort();
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}
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int qemu_set_option(const char *str)
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{
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Error *local_err = NULL;
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char group[64], id[64], arg[64];
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QemuOptsList *list;
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QemuOpts *opts;
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int rc, offset;
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rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
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if (rc < 3 || str[offset] != '=') {
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error_report("can't parse: \"%s\"", str);
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return -1;
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}
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list = qemu_find_opts(group);
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if (list == NULL) {
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return -1;
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}
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opts = qemu_opts_find(list, id);
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if (!opts) {
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error_report("there is no %s \"%s\" defined",
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list->name, id);
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return -1;
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}
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qemu_opt_set(opts, arg, str + offset + 1, &local_err);
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if (local_err) {
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error_report_err(local_err);
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return -1;
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}
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return 0;
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}
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struct ConfigWriteData {
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QemuOptsList *list;
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FILE *fp;
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};
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static int config_write_opt(void *opaque, const char *name, const char *value,
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Error **errp)
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{
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struct ConfigWriteData *data = opaque;
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fprintf(data->fp, " %s = \"%s\"\n", name, value);
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return 0;
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}
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static int config_write_opts(void *opaque, QemuOpts *opts, Error **errp)
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{
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struct ConfigWriteData *data = opaque;
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const char *id = qemu_opts_id(opts);
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if (id) {
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fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
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} else {
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fprintf(data->fp, "[%s]\n", data->list->name);
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}
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qemu_opt_foreach(opts, config_write_opt, data, NULL);
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fprintf(data->fp, "\n");
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return 0;
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}
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void qemu_config_write(FILE *fp)
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{
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struct ConfigWriteData data = { .fp = fp };
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QemuOptsList **lists = vm_config_groups;
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int i;
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fprintf(fp, "# qemu config file\n\n");
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for (i = 0; lists[i] != NULL; i++) {
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data.list = lists[i];
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qemu_opts_foreach(data.list, config_write_opts, &data, NULL);
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}
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}
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int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname)
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{
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char line[1024], group[64], id[64], arg[64], value[1024];
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Location loc;
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QemuOptsList *list = NULL;
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Error *local_err = NULL;
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QemuOpts *opts = NULL;
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int res = -1, lno = 0;
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loc_push_none(&loc);
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while (fgets(line, sizeof(line), fp) != NULL) {
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loc_set_file(fname, ++lno);
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if (line[0] == '\n') {
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/* skip empty lines */
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continue;
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}
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if (line[0] == '#') {
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/* comment */
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continue;
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}
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if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {
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/* group with id */
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list = find_list(lists, group, &local_err);
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if (local_err) {
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error_report_err(local_err);
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goto out;
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}
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opts = qemu_opts_create(list, id, 1, NULL);
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continue;
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}
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if (sscanf(line, "[%63[^]]]", group) == 1) {
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/* group without id */
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list = find_list(lists, group, &local_err);
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if (local_err) {
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error_report_err(local_err);
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goto out;
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}
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opts = qemu_opts_create(list, NULL, 0, &error_abort);
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continue;
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}
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value[0] = '\0';
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if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2 ||
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sscanf(line, " %63s = \"\"", arg) == 1) {
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/* arg = value */
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if (opts == NULL) {
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error_report("no group defined");
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goto out;
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}
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qemu_opt_set(opts, arg, value, &local_err);
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if (local_err) {
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error_report_err(local_err);
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goto out;
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}
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continue;
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}
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error_report("parse error");
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goto out;
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}
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if (ferror(fp)) {
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error_report("error reading file");
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goto out;
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}
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res = 0;
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out:
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loc_pop(&loc);
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return res;
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}
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int qemu_read_config_file(const char *filename)
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{
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FILE *f = fopen(filename, "r");
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int ret;
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if (f == NULL) {
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return -errno;
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}
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ret = qemu_config_parse(f, vm_config_groups, filename);
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fclose(f);
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if (ret == 0) {
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return 0;
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} else {
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return -EINVAL;
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}
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}
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static void config_parse_qdict_section(QDict *options, QemuOptsList *opts,
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Error **errp)
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{
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QemuOpts *subopts;
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QDict *subqdict;
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QList *list = NULL;
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Error *local_err = NULL;
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size_t orig_size, enum_size;
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char *prefix;
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prefix = g_strdup_printf("%s.", opts->name);
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qdict_extract_subqdict(options, &subqdict, prefix);
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g_free(prefix);
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orig_size = qdict_size(subqdict);
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if (!orig_size) {
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goto out;
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}
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subopts = qemu_opts_create(opts, NULL, 0, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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goto out;
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}
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qemu_opts_absorb_qdict(subopts, subqdict, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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goto out;
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}
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enum_size = qdict_size(subqdict);
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if (enum_size < orig_size && enum_size) {
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error_setg(errp, "Unknown option '%s' for [%s]",
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qdict_first(subqdict)->key, opts->name);
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goto out;
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}
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if (enum_size) {
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/* Multiple, enumerated sections */
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QListEntry *list_entry;
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unsigned i = 0;
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/* Not required anymore */
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qemu_opts_del(subopts);
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qdict_array_split(subqdict, &list);
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if (qdict_size(subqdict)) {
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error_setg(errp, "Unused option '%s' for [%s]",
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qdict_first(subqdict)->key, opts->name);
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goto out;
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}
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QLIST_FOREACH_ENTRY(list, list_entry) {
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QDict *section = qobject_to_qdict(qlist_entry_obj(list_entry));
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char *opt_name;
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if (!section) {
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error_setg(errp, "[%s] section (index %u) does not consist of "
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"keys", opts->name, i);
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goto out;
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}
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opt_name = g_strdup_printf("%s.%u", opts->name, i++);
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subopts = qemu_opts_create(opts, opt_name, 1, &local_err);
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g_free(opt_name);
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if (local_err) {
|
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error_propagate(errp, local_err);
|
|
goto out;
|
|
}
|
|
|
|
qemu_opts_absorb_qdict(subopts, section, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
qemu_opts_del(subopts);
|
|
goto out;
|
|
}
|
|
|
|
if (qdict_size(section)) {
|
|
error_setg(errp, "[%s] section doesn't support the option '%s'",
|
|
opts->name, qdict_first(section)->key);
|
|
qemu_opts_del(subopts);
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
QDECREF(subqdict);
|
|
QDECREF(list);
|
|
}
|
|
|
|
void qemu_config_parse_qdict(QDict *options, QemuOptsList **lists,
|
|
Error **errp)
|
|
{
|
|
int i;
|
|
Error *local_err = NULL;
|
|
|
|
for (i = 0; lists[i]; i++) {
|
|
config_parse_qdict_section(options, lists[i], &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
return;
|
|
}
|
|
}
|
|
}
|