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libxl: Support cmdline= in xl config files 

... and consolidate the cmdline/extra/root parsing to facilitate doing
so.

The logic is the same as xl's parse_cmdline from the current xen.git master
branch (e6f0e099d2c17de47fd86e817b1998db903cab61).

On the formatting side switch to producing cmdline= instead of extra=.

Update a few tests and add serveral more.
  - test-cmdline is added to test the exclusive use of cmdline.
  - test-fullvirt-direct-kernel-boot.cfg is updated due to the switch
    on the formatting side and now tests the exclusive use of cmdline=.
  - Tests are added for both paravirt and fullvirt where the .cfg uses
    extra= and (paravirt only) root=. These are format (xl->xml) only
    since the inverse will generate cmdline= hence is not a round trip
    (which was already true if using root=, which used to generate
    extra= on the way back).
  - Tests are added for both paravirt and fullvirt where the .cfg
    declares cmdline= as well as bogus extra= and (paravirt only) root=
    entries which should be ignored. Again these are format only tests
    since the inverse won't include the bogus lines.

The last two bullets here required splitting the DO_TEST macro into
two halves, as is done in the xmconfigtest.c case.

In order to introduce a use of VIR_WARN for logging I had to add
virerror.h and VIR_LOG_INIT.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
This commit is contained in:
Ian Campbell 2016-01-21 12:29:29 +00:00 committed by Jim Fehlig
parent d18d6a85f9
commit daeace5c5d
13 changed files with 365 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
src/xenconfig/xen_xl.c
View File

@ -27,6 +27,7 @@
#include "virconf.h"
#include "virerror.h"
#include "virlog.h"
#include "domain_conf.h"
#include "viralloc.h"
#include "virstring.h"
@ -35,6 +36,8 @@
#define VIR_FROM_THIS VIR_FROM_XENXL
VIR_LOG_INIT("xen.xen_xl");
/*
* Xen provides a libxl utility library, with several useful functions,
* specifically xlu_disk_parse for parsing xl disk config strings.
@ -58,11 +61,46 @@ extern int xlu_disk_parse(XLU_Config *cfg,
libxl_device_disk *disk);
#endif
static int xenParseCmdline(virConfPtr conf, char **r_cmdline)
{
char *cmdline = NULL;
const char *root, *extra, *buf;
if (xenConfigGetString(conf, "cmdline", &buf, NULL) < 0)
return -1;
if (xenConfigGetString(conf, "root", &root, NULL) < 0)
return -1;
if (xenConfigGetString(conf, "extra", &extra, NULL) < 0)
return -1;
if (buf) {
if (VIR_STRDUP(cmdline, buf) < 0)
return -1;
if (root || extra)
VIR_WARN("ignoring root= and extra= in favour of cmdline=");
} else {
if (root && extra) {
if (virAsprintf(&cmdline, "root=%s %s", root, extra) < 0)
return -1;
} else if (root) {
if (virAsprintf(&cmdline, "root=%s", root) < 0)
return -1;
} else if (extra) {
if (VIR_STRDUP(cmdline, extra) < 0)
return -1;
}
}
*r_cmdline = cmdline;
return 0;
}
static int
xenParseXLOS(virConfPtr conf, virDomainDefPtr def, virCapsPtr caps)
{
size_t i;
const char *extra, *root;
if (def->os.type == VIR_DOMAIN_OSTYPE_HVM) {
const char *boot;
@ -84,19 +122,8 @@ xenParseXLOS(virConfPtr conf, virDomainDefPtr def, virCapsPtr caps)
if (xenConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
return -1;
if (xenConfigGetString(conf, "extra", &extra, NULL) < 0)
if (xenParseCmdline(conf, &def->os.cmdline) < 0)
return -1;
if (xenConfigGetString(conf, "root", &root, NULL) < 0)
return -1;
if (root) {
if (virAsprintf(&def->os.cmdline, "root=%s %s", root, extra) < 0)
return -1;
} else {
if (VIR_STRDUP(def->os.cmdline, extra) < 0)
return -1;
}
#endif
if (xenConfigGetString(conf, "boot", &boot, "c") < 0)
@ -132,19 +159,8 @@ xenParseXLOS(virConfPtr conf, virDomainDefPtr def, virCapsPtr caps)
if (xenConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
return -1;
if (xenConfigGetString(conf, "extra", &extra, NULL) < 0)
if (xenParseCmdline(conf, &def->os.cmdline) < 0)
return -1;
if (xenConfigGetString(conf, "root", &root, NULL) < 0)
return -1;
if (root) {
if (virAsprintf(&def->os.cmdline, "root=%s %s", root, extra) < 0)
return -1;
} else {
if (VIR_STRDUP(def->os.cmdline, extra) < 0)
return -1;
}
}
return 0;
@ -503,7 +519,7 @@ xenFormatXLOS(virConfPtr conf, virDomainDefPtr def)
return -1;
if (def->os.cmdline &&
xenConfigSetString(conf, "extra", def->os.cmdline) < 0)
xenConfigSetString(conf, "cmdline", def->os.cmdline) < 0)
return -1;
#endif
@ -554,7 +570,7 @@ xenFormatXLOS(virConfPtr conf, virDomainDefPtr def)
return -1;
if (def->os.cmdline &&
xenConfigSetString(conf, "extra", def->os.cmdline) < 0)
xenConfigSetString(conf, "cmdline", def->os.cmdline) < 0)
return -1;
} /* !hvm */

31
tests/xlconfigdata/test-fullvirt-direct-kernel-boot-bogus-extra.cfg Normal file
View File

@ -0,0 +1,31 @@
name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
pae = 1
acpi = 1
apic = 1
hap = 0
viridian = 0
rtc_timeoffset = 0
localtime = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib/xen/bin/qemu-system-i386"
sdl = 0
vnc = 1
vncunused = 1
vnclisten = "127.0.0.1"
vncpasswd = "123poi"
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000" ]
parallel = "none"
serial = "none"
builder = "hvm"
kernel = "/tmp/vmlinuz"
ramdisk = "/tmp/initrd"
cmdline = "ignore_loglvl"
extra = "SHOULD BE IGNORED"
boot = "d"
disk = [ "/dev/HostVG/XenGuest2,raw,hda,w,backendtype=phy", "/root/boot.iso,raw,hdc,r,backendtype=qdisk,devtype=cdrom" ]

51
tests/xlconfigdata/test-fullvirt-direct-kernel-boot-bogus-extra.xml Normal file
View File

@ -0,0 +1,51 @@
<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>592896</memory>
<currentMemory unit='KiB'>403456</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' machine='xenfv'>hvm</type>
<loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
<kernel>/tmp/vmlinuz</kernel>
<initrd>/tmp/initrd</initrd>
<cmdline>ignore_loglvl</cmdline>
<boot dev='cdrom'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='variable' adjustment='0' basis='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/lib/xen/bin/qemu-system-i386</emulator>
<disk type='block' device='disk'>
<driver name='phy' type='raw'/>
<source dev='/dev/HostVG/XenGuest2'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/root/boot.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='1' target='0' unit='0'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
<model type='e1000'/>
</interface>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' passwd='123poi'>
<listen type='address' address='127.0.0.1'/>
</graphics>
</devices>
</domain>

30
tests/xlconfigdata/test-fullvirt-direct-kernel-boot-extra.cfg Normal file
View File

@ -0,0 +1,30 @@
name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
pae = 1
acpi = 1
apic = 1
hap = 0
viridian = 0
rtc_timeoffset = 0
localtime = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib/xen/bin/qemu-system-i386"
sdl = 0
vnc = 1
vncunused = 1
vnclisten = "127.0.0.1"
vncpasswd = "123poi"
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000" ]
parallel = "none"
serial = "none"
builder = "hvm"
kernel = "/tmp/vmlinuz"
ramdisk = "/tmp/initrd"
extra = "ignore_loglvl"
boot = "d"
disk = [ "/dev/HostVG/XenGuest2,raw,hda,w,backendtype=phy", "/root/boot.iso,raw,hdc,r,backendtype=qdisk,devtype=cdrom" ]

51
tests/xlconfigdata/test-fullvirt-direct-kernel-boot-extra.xml Normal file
View File

@ -0,0 +1,51 @@
<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>592896</memory>
<currentMemory unit='KiB'>403456</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' machine='xenfv'>hvm</type>
<loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
<kernel>/tmp/vmlinuz</kernel>
<initrd>/tmp/initrd</initrd>
<cmdline>ignore_loglvl</cmdline>
<boot dev='cdrom'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='variable' adjustment='0' basis='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/lib/xen/bin/qemu-system-i386</emulator>
<disk type='block' device='disk'>
<driver name='phy' type='raw'/>
<source dev='/dev/HostVG/XenGuest2'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/root/boot.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='1' target='0' unit='0'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
<model type='e1000'/>
</interface>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' passwd='123poi'>
<listen type='address' address='127.0.0.1'/>
</graphics>
</devices>
</domain>

2
tests/xlconfigdata/test-fullvirt-direct-kernel-boot.cfg
View File

@ -25,6 +25,6 @@ serial = "none"
builder = "hvm"
kernel = "/tmp/vmlinuz"
ramdisk = "/tmp/initrd"
extra = "ignore_loglvl"
cmdline = "ignore_loglvl"
boot = "d"
disk = [ "/dev/HostVG/XenGuest2,raw,hda,w,backendtype=phy", "/root/boot.iso,raw,hdc,r,backendtype=qdisk,devtype=cdrom" ]

13
tests/xlconfigdata/test-paravirt-cmdline-bogus-extra-root.cfg Normal file
View File

@ -0,0 +1,13 @@
localtime = 0
name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge" ]
kernel = "/tmp/vmlinuz"
ramdisk = "/tmp/initrd"
cmdline = "root=/dev/xvda1 console=hvc0"
extra = "SHOULD BE IGNORED"
root = "SHOULD BE IGNORED"
disk = [ "/dev/HostVG/XenGuest2,raw,xvda,w" ]

32
tests/xlconfigdata/test-paravirt-cmdline-bogus-extra-root.xml Normal file
View File

@ -0,0 +1,32 @@
<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>592896</memory>
<currentMemory unit='KiB'>403456</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' machine='xenpv'>linux</type>
<kernel>/tmp/vmlinuz</kernel>
<initrd>/tmp/initrd</initrd>
<cmdline>root=/dev/xvda1 console=hvc0</cmdline>
</os>
<clock offset='utc' adjustment='reset'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/dev/HostVG/XenGuest2'/>
<target dev='xvda' bus='xen'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
</interface>
<console type='pty'>
<target type='xen' port='0'/>
</console>
</devices>
</domain>

15
tests/xlconfigdata/test-paravirt-cmdline-extra-root.cfg Normal file
View File

@ -0,0 +1,15 @@
name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
localtime = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge" ]
kernel = "/tmp/vmlinuz"
ramdisk = "/tmp/initrd"
root = "/dev/xvda1"
extra = "console=hvc0"
disk = [ "/dev/HostVG/XenGuest2,raw,xvda,w,backendtype=qdisk" ]

32
tests/xlconfigdata/test-paravirt-cmdline-extra-root.xml Normal file
View File

@ -0,0 +1,32 @@
<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>592896</memory>
<currentMemory unit='KiB'>403456</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' machine='xenpv'>linux</type>
<kernel>/tmp/vmlinuz</kernel>
<initrd>/tmp/initrd</initrd>
<cmdline>root=/dev/xvda1 console=hvc0</cmdline>
</os>
<clock offset='utc' adjustment='reset'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/dev/HostVG/XenGuest2'/>
<target dev='xvda' bus='xen'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
</interface>
<console type='pty'>
<target type='xen' port='0'/>
</console>
</devices>
</domain>

14
tests/xlconfigdata/test-paravirt-cmdline.cfg Normal file
View File

@ -0,0 +1,14 @@
name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
localtime = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge" ]
kernel = "/tmp/vmlinuz"
ramdisk = "/tmp/initrd"
cmdline = "root=/dev/xvda1 console=hvc0"
disk = [ "/dev/HostVG/XenGuest2,raw,xvda,w,backendtype=qdisk" ]

32
tests/xlconfigdata/test-paravirt-cmdline.xml Normal file
View File

@ -0,0 +1,32 @@
<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>592896</memory>
<currentMemory unit='KiB'>403456</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' machine='xenpv'>linux</type>
<kernel>/tmp/vmlinuz</kernel>
<initrd>/tmp/initrd</initrd>
<cmdline>root=/dev/xvda1 console=hvc0</cmdline>
</os>
<clock offset='utc' adjustment='reset'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/dev/HostVG/XenGuest2'/>
<target dev='xvda' bus='xen'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
</interface>
<console type='pty'>
<target type='xen' port='0'/>
</console>
</devices>
</domain>

24
tests/xlconfigtest.c
View File

@ -180,29 +180,45 @@ mymain(void)
if (!(xmlopt = libxlCreateXMLConf()))
return EXIT_FAILURE;
#define DO_TEST(name) \
#define DO_TEST_PARSE(name) \
do { \
struct testInfo info0 = { name, 0 }; \
struct testInfo info1 = { name, 1 }; \
if (virtTestRun("Xen XM-2-XML Parse " name, \
if (virtTestRun("Xen XL-2-XML Parse " name, \
testCompareHelper, &info0) < 0) \
ret = -1; \
if (virtTestRun("Xen XM-2-XML Format " name, \
} while (0)
#define DO_TEST_FORMAT(name) \
do { \
struct testInfo info1 = { name, 1 }; \
if (virtTestRun("Xen XL-2-XML Format " name, \
testCompareHelper, &info1) < 0) \
ret = -1; \
} while (0)
#define DO_TEST(name) \
do { \
DO_TEST_PARSE(name); \
DO_TEST_FORMAT(name); \
} while (0)
DO_TEST("paravirt-maxvcpus");
DO_TEST("new-disk");
DO_TEST("spice");
DO_TEST("spice-features");
DO_TEST("vif-rate");
DO_TEST("paravirt-cmdline");
DO_TEST_FORMAT("paravirt-cmdline-extra-root");
DO_TEST_FORMAT("paravirt-cmdline-bogus-extra-root");
#ifdef LIBXL_HAVE_BUILDINFO_USBDEVICE_LIST
DO_TEST("fullvirt-multiusb");
#endif
#ifdef LIBXL_HAVE_BUILDINFO_KERNEL
DO_TEST("fullvirt-direct-kernel-boot");
DO_TEST_FORMAT("fullvirt-direct-kernel-boot-extra");
DO_TEST_FORMAT("fullvirt-direct-kernel-boot-bogus-extra");
#endif
virObjectUnref(caps);