Added generation of full xml to define a sandbox
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29a129f2b8
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9508b6ca28
@ -10,6 +10,7 @@
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#include <unistd.h>
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#include "pci.h"
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#include "xml.h"
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#define ALIAS(...) \
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(const char*[]) { __VA_ARGS__, NULL }
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230
src/xml.c
230
src/xml.c
@ -1,20 +1,228 @@
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#include "xml.h"
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#include "pci.h"
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#include "container.h"
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#include <stdio.h>
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#include <string.h>
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result_t generate_container_xml(char** _xml, char* container, int cpu, uint64_t memory, char** pcis, char** iso_paths, int vnc_port, char* vnc_password) {
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// Initialize the output parameters
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*_xml = NULL;
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// Generate the PCI XML
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char* pci_xml;
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result_t result = generate_multi_pci_xml(&pci_xml, pcis);
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if (result != success())
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return result;
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// Generate the ISO XML
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char* iso_xml;
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result = generate_multi_iso_xml(&iso_xml, iso_paths);
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if (result != success()) {
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free(pci_xml);
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return result;
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}
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// Generate the VNC XML
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char* vnc_xml;
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result = generate_vnc_xml(&vnc_xml, vnc_port, vnc_password);
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if (result != success()) {
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free(pci_xml);
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free(iso_xml);
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return result;
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}
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// Get the container path
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char* container_path;
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result = get_container_path(&container_path, container);
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if (result != success()) {
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free(pci_xml);
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free(iso_xml);
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free(vnc_xml);
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return result;
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}
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// Generate the XML
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result = format(_xml, "<domain type='kvm'>\n"
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"<name>sandbox</name>\n"
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"\n<!-- Resources -->\n"
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"<memory unit='B'>%llu</memory>\n"
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"<vcpu placement='static'>%d</vcpu>\n"
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"<cpu mode='host-passthrough'/>\n"
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"\n<!-- OS -->\n"
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"<os>\n"
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"<type arch='x86_64' machine='q35'>hvm</type>\n"
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"<bootmenu enable='no'/>\n"
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"</os>\n"
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"\n<!-- Features -->\n"
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"<features>\n"
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"<acpi/>\n"
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"<apic/>\n"
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"</features>\n"
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"\n<!-- Clock -->\n"
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"<clock offset='utc'>\n"
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"<timer name='rtc' tickpolicy='catchup'/>\n"
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"<timer name='pit' tickpolicy='delay'/>\n"
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"<timer name='hpet' present='no'/>\n"
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"</clock>\n"
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"\n<!-- Behavior -->\n"
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"<on_poweroff>destroy</on_poweroff>\n"
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"<on_reboot>destroy</on_reboot>\n"
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"<on_crash>destroy</on_crash>\n"
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"<pm>\n"
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"<suspend-to-mem enabled='yes'/>\n"
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"<suspend-to-disk enabled='yes'/>\n"
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"</pm>\n"
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"\n<!-- Devices -->\n"
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"<devices>\n"
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"<emulator>/usr/bin/qemu-system-x86_64</emulator>\n"
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"\n<!-- Disks -->\n"
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"<disk type='file' device='disk'>\n"
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"<driver name='qemu' type='qcow2'/>\n"
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"<source file='%s'/>\n"
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"<target dev='sda' bus='sata'/>\n"
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"<boot order='1'/>\n"
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"</disk>\n"
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"\n<!-- ISOs -->\n"
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"%s"
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"\n<!-- VNC -->\n"
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"%s"
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"\n<!-- PCIs -->\n"
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"%s"
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"\n<!-- Misc -->\n"
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"<watchdog model='itco' action='poweroff'/>\n"
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"<memballoon model='none'/>\n"
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"</devices>\n"
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"</domain>\n",
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memory, cpu, container_path, iso_xml, vnc_xml, pci_xml);
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// Free the PCI, ISO, and VNC XML
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free(pci_xml);
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free(iso_xml);
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free(vnc_xml);
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return result;
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}
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result_t generate_iso_xml(char** _xml, char* iso_path, int index) {
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// Initialize the output parameters
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*_xml = NULL;
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if (index > 25)
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if (index >= 26)
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return failure("Too many ISO images");
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// Generate the XML
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return format(_xml, "<disk type='file' device='cdrom'>"
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" <driver name='qemu' type='raw'/>"
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" <source file='%s'/>"
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" <target dev='sd%c' bus='sata'/>"
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" <readonly/>"
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"</disk>",
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iso_path, 'a' + index);
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return format(_xml, "<disk type='file' device='cdrom'>\n"
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"<driver name='qemu' type='raw'/>\n"
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"<source file='%s'/>\n"
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"<target dev='sd%c' bus='sata'/>\n"
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"<boot order='%d'/>\n"
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"<readonly/>\n"
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"</disk>\n",
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iso_path, 'b' + index, index + 2); // sda is reserved for the hard drive
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}
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result_t generate_multi_iso_xml(char** _xml, char** iso_paths) {
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// Initialize the output parameters
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*_xml = NULL;
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char* xml = strdup("");
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if (xml == NULL)
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return failure("Failed to allocate memory for XML");
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// For each ISO path, generate the XML and append it to the result
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for (int i = 0; iso_paths[i] != NULL; i++) {
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// Generate the XML for the ISO
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char* iso_xml;
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result_t result = generate_iso_xml(&iso_xml, iso_paths[i], i);
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if (result != success()) {
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free(xml);
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return result;
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}
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// Append the ISO XML to the result
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char* new_xml;
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result = format(&new_xml, "%s%s", xml == NULL ? "" : xml, iso_xml);
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free(iso_xml);
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// Check that the append operation was successful
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if (result != success()) {
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free(xml);
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return result;
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}
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// Swap the XML strings
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free(xml);
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xml = new_xml;
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}
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*_xml = xml;
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return success();
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}
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result_t generate_pci_xml(char** _xml, char* pci) {
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// Initialize the output parameters
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*_xml = NULL;
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// Check that the PCI address is valid
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result_t result = check_pci_address(pci);
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if (result != success())
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return result;
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// Split the PCI address into its components
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long domain = 0;
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long bus = 0;
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long slot = 0;
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long function = 0;
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// Generate the XML
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return format(_xml, "<hostdev mode='subsystem' type='pci' managed='yes'>\n"
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"<source>\n"
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"<address domain='0x%04lx' bus='0x%02lx' slot='0x%02lx' function='0x%01lx'/>\n"
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"</source>\n"
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"</hostdev>\n",
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domain, bus, slot, function);
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}
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result_t generate_multi_pci_xml(char** _xml, char** pcis) {
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// Initialize the output parameters
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*_xml = NULL;
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char* xml = strdup("");
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if (xml == NULL)
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return failure("Failed to allocate memory for XML");
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// For each PCI address, generate the XML and append it to the result
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for (int i = 0; pcis[i] != NULL; i++) {
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// Generate the XML for the PCI address
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char* pci_xml;
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result_t result = generate_pci_xml(&pci_xml, pcis[i]);
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if (result != success()) {
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free(xml);
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return result;
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}
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// Append the PCI XML to the result
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char* new_xml;
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result = format(&new_xml, "%s%s", xml == NULL ? "" : xml, pci_xml);
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free(pci_xml);
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// Check that the append operation was successful
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if (result != success()) {
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free(xml);
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return result;
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}
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// Swap the XML strings
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free(xml);
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xml = new_xml;
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}
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*_xml = xml;
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return success();
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}
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result_t generate_vnc_xml(char** _xml, int vnc_port, char* password) {
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@ -22,8 +230,8 @@ result_t generate_vnc_xml(char** _xml, int vnc_port, char* password) {
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*_xml = NULL;
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// Generate the XML
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if (vnc_port == -1)
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return format(_xml, "<graphics type='none'/>");
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if (vnc_port != -1)
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return format(_xml, "<graphics type='vnc' port='%d' autoport='no' listen='0.0.0.0' passwd='%s'/>\n", vnc_port, password);
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else
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return format(_xml, "<graphics type='vnc' port='%d' autoport='no' listen='0.0.0.0' passwd='%s'/>", vnc_port, password);
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return format(_xml, "");
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}
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26
src/xml.h
26
src/xml.h
@ -7,12 +7,12 @@
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/// @param container The container to generate the XML for.
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/// @param cpu The number of CPUs to allocate to the container.
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/// @param memory The amount of memory to allocate to the container, in bytes.
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/// @param pci A null-terminated array of PCI devices to pass through to the container.
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/// @param iso_path A null-terminated array of ISO image paths to attach to the container.
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/// @param pcis A null-terminated array of PCI devices to pass through to the container.
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/// @param iso_paths A null-terminated array of ISO image paths to attach to the container.
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/// @param vnc_port The VNC port to use for the container. If -1, no VNC server will be started.
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/// @param vnc_password The password to use for the VNC server. This parameter is ignored if VNC is not enabled.
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/// @return The result of the operation.
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result_t generate_container_xml(char** _xml, char* container, int cpu, uint64_t memory, char** pci, char** iso_path, int vnc_port, char* vnc_password);
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result_t generate_container_xml(char** _xml, char* container, int cpu, uint64_t memory, char** pcis, char** iso_paths, int vnc_port, char* vnc_password);
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/// @brief Generate the libvirt XML used to attach an ISO image to a container.
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/// @param _xml The string pointer to store the resulting XML in.
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@ -21,15 +21,27 @@ result_t generate_container_xml(char** _xml, char* container, int cpu, uint64_t
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/// @return The result of the operation.
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result_t generate_iso_xml(char** _xml, char* iso_path, int index);
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/// @brief Generate the libvirt XML used to start a VNC server for a container.
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/// @brief Generate the libvirt XML used to attach multiple ISO images to a container.
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/// @param _xml The string pointer to store the resulting XML in.
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/// @param vnc_port The VNC port to use for the container.
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/// @param password The password to use for the VNC server. This parameter is ignored if VNC is not enabled.
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/// @param iso_paths The paths to the ISO images to attach.
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/// @return The result of the operation.
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result_t generate_vnc_xml(char** _xml, int vnc_port, char* password);
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result_t generate_multi_iso_xml(char** _xml, char** iso_paths);
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/// @brief Generate the libvirt XML used to pass through a PCI device to a container.
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/// @param _xml The string pointer to store the resulting XML in.
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/// @param pci The PCI device to generate the XML for.
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/// @return The result of the operation.
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result_t generate_pci_xml(char** _xml, char* pci);
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/// @brief Generate the libvirt XML used to pass through multiple PCI devices to a container.
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/// @param _xml The string pointer to store the resulting XML in.
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/// @param pcis The PCI devices to generate the XML for.
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/// @return The result of the operation.
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result_t generate_multi_pci_xml(char** _xml, char** pcis);
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/// @brief Generate the libvirt XML used to start a VNC server for a container.
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/// @param _xml The string pointer to store the resulting XML in.
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/// @param vnc_port The VNC port to use for the container.
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/// @param password The password to use for the VNC server. This parameter is ignored if VNC is not enabled.
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/// @return The result of the operation.
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result_t generate_vnc_xml(char** _xml, int vnc_port, char* password);
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