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[libvirt] [PATCH] Improve error reporting in virsh
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233791330 28800 # Node ID 6588879d8cc9a3af1147a5edd624aee5155493ae # Parent da162569b5f7e132c4ccbfc56fc3670fb5ecee10 Improve error reporting in virsh Rather than verbosely printing every error, save the last error and report that only if the entire command fails. Additionally, avoid over-writing an existing error in various places in the library. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/include/libvirt/virterror.h b/include/libvirt/virterror.h --- a/include/libvirt/virterror.h +++ b/include/libvirt/virterror.h @@ -187,6 +187,8 @@ void virConnSetErrorFunc (virConnectPt virErrorFunc handler); int virConnCopyLastError (virConnectPtr conn, virErrorPtr to); + +virErrorPtr virCloneError (virErrorPtr from); #ifdef __cplusplus } #endif diff --git a/src/domain_conf.c b/src/domain_conf.c --- a/src/domain_conf.c +++ b/src/domain_conf.c @@ -2432,8 +2432,7 @@ catchXMLError (void *ctx, const char *ms if (ctxt) { virConnectPtr conn = ctxt->_private; - if (conn && - conn->err.code == VIR_ERR_NONE && + if (virGetLastError() == NULL && ctxt->lastError.level == XML_ERR_FATAL && ctxt->lastError.message != NULL) { virDomainReportError (conn, VIR_ERR_XML_DETAIL, @@ -2466,7 +2465,7 @@ virDomainDefPtr virDomainDefParseString( XML_PARSE_NOENT | XML_PARSE_NONET | XML_PARSE_NOWARNING); if (!xml) { - if (conn && conn->err.code == VIR_ERR_NONE) + if (virGetLastError() == NULL) virDomainReportError(conn, VIR_ERR_XML_ERROR, "%s", _("failed to parse xml document")); goto cleanup; @@ -2507,7 +2506,7 @@ virDomainDefPtr virDomainDefParseFile(vi XML_PARSE_NOENT | XML_PARSE_NONET | XML_PARSE_NOWARNING); if (!xml) { - if (conn && conn->err.code == VIR_ERR_NONE) + if (virGetLastError() == NULL) virDomainReportError(conn, VIR_ERR_XML_ERROR, "%s", _("failed to parse xml document")); goto cleanup; diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -244,6 +244,7 @@ LIBVIRT_0.6.0 { virStoragePoolRef; virStorageVolRef; virNodeDeviceRef; + virCloneError; } LIBVIRT_0.5.0; diff --git a/src/virsh.c b/src/virsh.c --- a/src/virsh.c +++ b/src/virsh.c @@ -93,22 +93,6 @@ typedef enum { } vshErrorLevel; /* - * The error handler for virsh - */ -static void -virshErrorHandler(void *unused, virErrorPtr error) -{ - if ((unused != NULL) || (error == NULL)) - return; - - /* Suppress the VIR_ERR_NO_XEN error which fails as non-root */ - if ((error->code == VIR_ERR_NO_XEN) || (error->code == VIR_ERR_OK)) - return; - - virDefaultErrorFunc(error); -} - -/* * virsh command line grammar: * * command_line = <command>\n | <command>; <command>; ... @@ -319,6 +303,41 @@ static int namesorter(const void *a, con const char **sb = (const char**)b; return strcasecmp(*sa, *sb); +} + +static virErrorPtr last_error; + +/* + * Quieten libvirt until we're done with the command. + */ +static void +virshErrorHandler(void *unused, virErrorPtr error) +{ + last_error = virCloneError(error); + if (getenv("VIRSH_DEBUG") != NULL) + virDefaultErrorFunc(error); +} + +/* + * Report an error when a command finishes. This is better than before + * (when correct operation would report errors), but it has some + * problems: we lose the smarter formatting of virDefaultErrorFunc(), + * and it can become harder to debug problems, if errors get reported + * twice during one command. This case shouldn't really happen anyway, + * and it's IMHO a bug that libvirt does that sometimes. + */ +static void +virshReportError(vshControl *ctl) +{ + if (last_error == NULL) + return; + + if (last_error->code == VIR_ERR_OK) { + vshError(ctl, TRUE, "%s", _("unknown error")); + return; + } + + vshError(ctl, TRUE, "%s", last_error->message); } @@ -6102,6 +6121,9 @@ vshCommandRun(vshControl *ctl, const vsh if (ctl->timing) GETTIMEOFDAY(&after); + + if (ret == FALSE) + virshReportError(ctl); if (STREQ(cmd->def->name, "quit")) /* hack ... */ return ret; diff --git a/src/virterror.c b/src/virterror.c --- a/src/virterror.c +++ b/src/virterror.c @@ -259,6 +259,32 @@ virGetLastError(void) } /** + * virCloneError: + * @from: source error to copy from + * + * Allocate a new error object and deep-copy it from the given error + * object. The destination error is reset before the copy. If NULL is + * passed, a new error object is allocated. + * + * Returns a pointer to the copied error or NULL if allocation failed. + */ +virErrorPtr +virCloneError(virErrorPtr from) +{ + virErrorPtr to; + + if (VIR_ALLOC(to) < 0) + return NULL; + + if (from) + virCopyError(from, to); + else + virResetError(to); + + return to; +} + +/** * virCopyLastError: * @to: target to receive the copy * diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -105,12 +105,16 @@ virDomainDevID(virDomainPtr domain, int devid_len); #endif -#define virXendError(conn, code, fmt...) \ - virReportErrorHelper(conn, VIR_FROM_XEND, code, __FILE__, \ - __FUNCTION__, __LINE__, fmt) - +#define virXendError(conn, codeval, fmt...) \ + do { \ + if (virGetLastError() == NULL) { \ + virReportErrorHelper(conn, VIR_FROM_XEND, codeval, __FILE__, \ + __FUNCTION__, __LINE__, fmt); \ + } \ + } while (0) + #define virXendErrorInt(conn, code, ival) \ - virXendError(conn, code, "%d", ival) + virXendError(conn, code, "%d", ival) /** * do_connect:

3 7

[libvirt] [PATCH] Improve error reporting in virsh
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233859425 28800 # Node ID c594c1c54b88947082a01b6aaa81ad7756bbd951 # Parent a23da778e0ddf954d8bf0a185b508fc236feb4be Improve error reporting in virsh Rather than verbosely printing every error, save the last error and report that only if the entire command fails. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/virsh.c b/src/virsh.c --- a/src/virsh.c +++ b/src/virsh.c @@ -93,22 +93,6 @@ typedef enum { } vshErrorLevel; /* - * The error handler for virsh - */ -static void -virshErrorHandler(void *unused, virErrorPtr error) -{ - if ((unused != NULL) || (error == NULL)) - return; - - /* Suppress the VIR_ERR_NO_XEN error which fails as non-root */ - if ((error->code == VIR_ERR_NO_XEN) || (error->code == VIR_ERR_OK)) - return; - - virDefaultErrorFunc(error); -} - -/* * virsh command line grammar: * * command_line = <command>\n | <command>; <command>; ... @@ -319,6 +303,45 @@ static int namesorter(const void *a, con const char **sb = (const char**)b; return strcasecmp(*sa, *sb); +} + +static virErrorPtr last_error; + +/* + * Quieten libvirt until we're done with the command. + */ +static void +virshErrorHandler(void *unused, virErrorPtr error) +{ + last_error = virSaveLastError(); + if (getenv("VIRSH_DEBUG") != NULL) + virDefaultErrorFunc(error); +} + +/* + * Report an error when a command finishes. This is better than before + * (when correct operation would report errors), but it has some + * problems: we lose the smarter formatting of virDefaultErrorFunc(), + * and it can become harder to debug problems, if errors get reported + * twice during one command. This case shouldn't really happen anyway, + * and it's IMHO a bug that libvirt does that sometimes. + */ +static void +virshReportError(vshControl *ctl) +{ + if (last_error == NULL) + return; + + if (last_error->code == VIR_ERR_OK) { + vshError(ctl, FALSE, "%s", _("unknown error")); + goto out; + } + + vshError(ctl, FALSE, "%s", last_error->message); + +out: + free(last_error); + last_error = NULL; } @@ -6102,6 +6125,9 @@ vshCommandRun(vshControl *ctl, const vsh if (ctl->timing) GETTIMEOFDAY(&after); + + if (ret == FALSE) + virshReportError(ctl); if (STREQ(cmd->def->name, "quit")) /* hack ... */ return ret;

4 3

[libvirt] [PATCH] Introduce virCopyLastError()
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233859424 28800 # Node ID dd8a1923aae38d9e36cb98a934af64450ecd85a2 # Parent 8086732c0e4250d26a4cfed2411e86b209712eb5 Introduce virCopyLastError() Allow applications to store a copy of the last error reported. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/include/libvirt/virterror.h b/include/libvirt/virterror.h --- a/include/libvirt/virterror.h +++ b/include/libvirt/virterror.h @@ -172,6 +172,7 @@ typedef void (*virErrorFunc) (void *user */ virErrorPtr virGetLastError (void); +virErrorPtr virSaveLastError (void); void virResetLastError (void); void virResetError (virErrorPtr err); diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -247,4 +247,9 @@ LIBVIRT_0.6.0 { } LIBVIRT_0.5.0; +LIBVIRT_0.6.1 { + global: + virSaveLastError; +} LIBVIRT_0.6.0; + # .... define new API here using predicted next version number .... diff --git a/src/virterror.c b/src/virterror.c --- a/src/virterror.c +++ b/src/virterror.c @@ -286,6 +286,25 @@ virCopyLastError(virErrorPtr to) } /** + * virSaveLastError: + * + * Save the last error into a new error object. + * + * Returns a pointer to the copied error or NULL if allocation failed. + */ +virErrorPtr +virSaveLastError(void) +{ + virErrorPtr to; + + if (VIR_ALLOC(to) < 0) + return NULL; + + virCopyLastError(to); + return to; +} + +/** * virResetError: * @err: pointer to the virError to clean up *

2 2

[libvirt] autostart with xend
by John Levon 05 Feb '09

05 Feb '09

It doesn't work quite right with a running domain. The 'new' will correctly set the config, but the temporary config doesn't include the new setting. So tests of the form "set autostart; is it set?" will fail. Suggestions? Also, why isn't this represented in the XML? thanks, john

2 4

[libvirt] [PATCH] Add <distro> to domain XML
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233340700 28800 # Node ID c1cc701bfb5b7417c2c8cd3571022dcd161c518f # Parent cb53cd19242ca7c4a8d20a54495108d7f6639e57 Add <distro> to domain XML Support recording the distro type and variant of a domain. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng --- a/docs/schemas/domain.rng +++ b/docs/schemas/domain.rng @@ -19,6 +19,7 @@ <ref name='resources'/> <ref name='features'/> <ref name='termination'/> + <ref name='distro'/> <optional> <ref name='devices'/> </optional> @@ -326,6 +327,20 @@ </attribute> <empty/> </element> + </define> + + + <define name='distro'> + <optional> + <element name='distro'> + <element name='type'> + <text/> + </element> + <element name='variant'> + <text/> + </element> + </element> + </optional> </define> diff --git a/src/domain_conf.c b/src/domain_conf.c --- a/src/domain_conf.c +++ b/src/domain_conf.c @@ -436,6 +436,8 @@ void virDomainDefFree(virDomainDefPtr de VIR_FREE(def->name); VIR_FREE(def->cpumask); VIR_FREE(def->emulator); + VIR_FREE(def->distro_type); + VIR_FREE(def->distro_variant); VIR_FREE(def); } @@ -2010,6 +2012,9 @@ static virDomainDefPtr virDomainDefParse &def->onCrash, VIR_DOMAIN_LIFECYCLE_DESTROY) < 0) goto error; + def->distro_type = virXPathString(conn, "string(./distro/type[1])", ctxt); + def->distro_variant = virXPathString(conn, + "string(./distro/variant[1])", ctxt); tmp = virXPathString(conn, "string(./clock/@offset)", ctxt); if (tmp && STREQ(tmp, "localtime")) @@ -3352,6 +3357,17 @@ char *virDomainDefFormat(virConnectPtr c "on_crash") < 0) goto cleanup; + if (def->distro_type != NULL) { + virBufferAddLit(&buf, " <distro>\n"); + virBufferEscapeString(&buf, " <type>%s</type>\n", + def->distro_type); + if (def->distro_variant != NULL) { + virBufferEscapeString(&buf, " <variant>%s</variant>\n", + def->distro_variant); + } + virBufferAddLit(&buf, " </distro>\n"); + } + virBufferAddLit(&buf, " <devices>\n"); if (def->emulator) diff --git a/src/domain_conf.h b/src/domain_conf.h --- a/src/domain_conf.h +++ b/src/domain_conf.h @@ -428,6 +428,9 @@ struct _virDomainDef { int onReboot; int onPoweroff; int onCrash; + + char *distro_type; + char *distro_variant; virDomainOSDef os; char *emulator; diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -2274,6 +2274,14 @@ xenDaemonParseSxpr(virConnectPtr conn, } } else def->onCrash = VIR_DOMAIN_LIFECYCLE_DESTROY; + + tmp = sexpr_node(root, "domain/distro_type"); + if (tmp != NULL && (def->distro_type = strdup(tmp)) == NULL) + goto no_memory; + + tmp = sexpr_node(root, "domain/distro_variant"); + if (tmp != NULL && (def->distro_variant = strdup(tmp)) == NULL) + goto no_memory; if (hvm) { @@ -5337,6 +5345,11 @@ xenDaemonFormatSxpr(virConnectPtr conn, } virBufferVSprintf(&buf, "(on_crash '%s')", tmp); + if (def->distro_type != NULL) + virBufferVSprintf(&buf, "(distro_type '%s')", def->distro_type); + if (def->distro_variant != NULL) + virBufferVSprintf(&buf, "(distro_variant '%s')", def->distro_variant); + /* * xend puts localtime in image/{hvm,linux}/, but is clearly * bootloader independent. As a simple workaround, we define it diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-distro.sexpr b/tests/sexpr2xmldata/sexpr2xml-fv-distro.sexpr new file mode 100644 --- /dev/null +++ b/tests/sexpr2xmldata/sexpr2xml-fv-distro.sexpr @@ -0,0 +1,86 @@ +(domain + (domid 1) + (on_crash destroy) + (uuid 7dbd82d8-bd75-72ea-0f23-f988c4ef95bd) + (bootloader_args ) + (vcpus 1) + (name domu-220) + (on_poweroff destroy) + (on_reboot destroy) + (bootloader ) + (maxmem 1024) + (memory 1024) + (shadow_memory 9) + (cpu_weight 256) + (cpu_cap 0) + (features ) + (on_xend_start ignore) + (on_xend_stop shutdown) + (start_time 1233338703.67) + (cpu_time 31.675171334) + (online_vcpus 1) + (distro_type windows) + (distro_variant winxp) + (image + (hvm + (kernel /usr/lib/xen/boot/hvmloader) + (boot d) + (device_model /usr/lib/xen/bin/qemu-dm) + (keymap en-us) + (localtime 1) + (pae 1) + (serial pty) + (usb 1) + (usbdevice tablet) + (notes (SUSPEND_CANCEL 1)) + ) + ) + (status 2) + (state r-----) + (store_mfn 262142) + (device + (vif + (mac 00:16:36:1a:73:6d) + (script vif-vnic) + (uuid e81f0e1a-69d9-fd9a-6bee-540693c66eeb) + (backend 0) + ) + ) + (device + (vbd + (uname phy:/dev/zvol/dsk/export/dom/domu-220-root) + (uuid 4e71c222-f7cf-7fac-bae3-dc57f1e3f2bc) + (mode w) + (dev hda:disk) + (backend 0) + (bootable 1) + ) + ) + (device + (vbd + (uname file:/net/heaped/export/netimage/windows/xp-sp2-vol.iso) + (uuid 2f321f31-80c9-c71e-cb80-0e6a932b071b) + (mode r) + (dev hdc:cdrom) + (backend 0) + (bootable 0) + ) + ) + (device (vkbd (backend 0))) + (device + (vfb + (vncunused 1) + (keymap en-us) + (type vnc) + (uuid a296597b-b5ac-a5b6-05c5-1d98200c528f) + (location localhost:5900) + ) + ) + (device + (console + (protocol vt100) + (location 3) + (uuid 8665fe81-678a-4ddc-5f8d-24e3d5fa46d9) + ) + ) +) diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-distro.xml b/tests/sexpr2xmldata/sexpr2xml-fv-distro.xml new file mode 100644 --- /dev/null +++ b/tests/sexpr2xmldata/sexpr2xml-fv-distro.xml @@ -0,0 +1,51 @@ +<domain type='xen' id='1'> + <name>domu-220</name> + <uuid>7dbd82d8-bd75-72ea-0f23-f988c4ef95bd</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>1</vcpu> + <os> + <type>hvm</type> + <loader>/usr/lib/xen/boot/hvmloader</loader> + <boot dev='cdrom'/> + </os> + <features> + <pae/> + </features> + <clock offset='localtime'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>destroy</on_reboot> + <on_crash>destroy</on_crash> + <distro> + <type>windows</type> + <variant>winxp</variant> + </distro> + <devices> + <emulator>/usr/lib/xen/bin/qemu-dm</emulator> + <disk type='block' device='disk'> + <driver name='phy'/> + <source dev='/dev/zvol/dsk/export/dom/domu-220-root'/> + <target dev='hda' bus='ide'/> + </disk> + <disk type='file' device='cdrom'> + <driver name='file'/> + <source file='/net/heaped/export/netimage/windows/xp-sp2-vol.iso'/> + <target dev='hdc' bus='ide'/> + <readonly/> + </disk> + <interface type='ethernet'> + <mac address='00:16:36:1a:73:6d'/> + <script path='vif-vnic'/> + <target dev='vif1.0'/> + </interface> + <serial type='pty'> + <target port='0'/> + </serial> + <console type='pty'> + <target port='0'/> + </console> + <input type='tablet' bus='usb'/> + <input type='mouse' bus='ps2'/> + <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> + </devices> +</domain> diff --git a/tests/sexpr2xmltest.c b/tests/sexpr2xmltest.c --- a/tests/sexpr2xmltest.c +++ b/tests/sexpr2xmltest.c @@ -150,6 +150,7 @@ mymain(int argc, char **argv) DO_TEST("fv-usbmouse", "fv-usbmouse", 1); DO_TEST("fv-usbtablet", "fv-usbtablet", 1); DO_TEST("fv-kernel", "fv-kernel", 1); + DO_TEST("fv-distro", "fv-distro", 3); DO_TEST("fv-serial-null", "fv-serial-null", 1); DO_TEST("fv-serial-file", "fv-serial-file", 1); diff --git a/tests/xml2sexprdata/xml2sexpr-fv-distro.sexpr b/tests/xml2sexprdata/xml2sexpr-fv-distro.sexpr new file mode 100644 --- /dev/null +++ b/tests/xml2sexprdata/xml2sexpr-fv-distro.sexpr @@ -0,0 +1,1 @@ +(vm (name 'domu-220')(memory 1024)(maxmem 1024)(vcpus 1)(uuid '7dbd82d8-bd75-72ea-0f23-f988c4ef95bd')(on_poweroff 'destroy')(on_reboot 'destroy')(on_crash 'destroy')(distro_type 'windows')(distro_variant 'winxp')(localtime 1)(image (hvm (kernel '/usr/lib/xen/boot/hvmloader')(vcpus 1)(boot d)(pae 1)(usb 1)(usbdevice tablet)(parallel none)(serial pty)(device_model '/usr/lib/xen/bin/qemu-dm')(vnc 1)(vncunused 1)(keymap 'en-us')))(device (vbd (dev 'hda:disk')(uname 'phy:/dev/zvol/dsk/export/dom/domu-220-root')(mode 'w')))(device (vbd (dev 'hdc:cdrom')(uname 'file:/net/heaped/export/netimage/windows/xp-sp2-vol.iso')(mode 'r')))(device (vif (mac '00:16:36:1a:73:6d')(script 'vif-vnic')(type ioemu)))) \ No newline at end of file diff --git a/tests/xml2sexprdata/xml2sexpr-fv-distro.xml b/tests/xml2sexprdata/xml2sexpr-fv-distro.xml new file mode 100644 --- /dev/null +++ b/tests/xml2sexprdata/xml2sexpr-fv-distro.xml @@ -0,0 +1,51 @@ +<domain type='xen' id='1'> + <name>domu-220</name> + <uuid>7dbd82d8-bd75-72ea-0f23-f988c4ef95bd</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>1</vcpu> + <os> + <type>hvm</type> + <loader>/usr/lib/xen/boot/hvmloader</loader> + <boot dev='cdrom'/> + </os> + <features> + <pae/> + </features> + <clock offset='localtime'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>destroy</on_reboot> + <on_crash>destroy</on_crash> + <distro> + <type>windows</type> + <variant>winxp</variant> + </distro> + <devices> + <emulator>/usr/lib/xen/bin/qemu-dm</emulator> + <disk type='block' device='disk'> + <driver name='phy'/> + <source dev='/dev/zvol/dsk/export/dom/domu-220-root'/> + <target dev='hda' bus='ide'/> + </disk> + <disk type='file' device='cdrom'> + <driver name='file'/> + <source file='/net/heaped/export/netimage/windows/xp-sp2-vol.iso'/> + <target dev='hdc' bus='ide'/> + <readonly/> + </disk> + <interface type='ethernet'> + <mac address='00:16:36:1a:73:6d'/> + <script path='vif-vnic'/> + <target dev='vif1.0'/> + </interface> + <serial type='pty'> + <target port='0'/> + </serial> + <console type='pty'> + <target port='0'/> + </console> + <input type='tablet' bus='usb'/> + <input type='mouse' bus='ps2'/> + <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> + </devices> +</domain> diff --git a/tests/xml2sexprtest.c b/tests/xml2sexprtest.c --- a/tests/xml2sexprtest.c +++ b/tests/xml2sexprtest.c @@ -136,6 +136,7 @@ mymain(int argc, char **argv) DO_TEST("fv-usbmouse", "fv-usbmouse", "fvtest", 1); DO_TEST("fv-usbmouse", "fv-usbmouse", "fvtest", 1); DO_TEST("fv-kernel", "fv-kernel", "fvtest", 1); + DO_TEST("fv-distro", "fv-distro", "fvtest", 3); DO_TEST("fv-serial-null", "fv-serial-null", "fvtest", 1); DO_TEST("fv-serial-file", "fv-serial-file", "fvtest", 1);

5 7

[libvirt] [PATCH] Use virMacAddrCompare() in xs_internal.c
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233800565 28800 # Node ID 379763c63798c9f0c426facb9b9b61e34e6477e2 # Parent e6b17082b9b9440ce14ad76bd2f4c003ae2404db Use virMacAddrCompare() in xs_internal.c This solves a failure to look up a net device. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xs_internal.c b/src/xs_internal.c --- a/src/xs_internal.c +++ b/src/xs_internal.c @@ -915,7 +915,7 @@ char * char * xenStoreDomainGetNetworkID(virConnectPtr conn, int id, const char *mac) { char dir[80], path[128], **list = NULL, *val = NULL; - unsigned int maclen, len, i, num; + unsigned int len, i, num; char *ret = NULL; xenUnifiedPrivatePtr priv; @@ -926,9 +926,6 @@ xenStoreDomainGetNetworkID(virConnectPtr if (priv->xshandle == NULL) return (NULL); if (mac == NULL) - return (NULL); - maclen = strlen(mac); - if (maclen <= 0) return (NULL); snprintf(dir, sizeof(dir), "/local/domain/0/backend/vif/%d", id); @@ -937,18 +934,20 @@ xenStoreDomainGetNetworkID(virConnectPtr return(NULL); for (i = 0; i < num; i++) { snprintf(path, sizeof(path), "%s/%s/%s", dir, list[i], "mac"); - val = xs_read(priv->xshandle, 0, path, &len); - if (val == NULL) + if ((val = xs_read(priv->xshandle, 0, path, &len)) == NULL) break; - if ((maclen != len) || memcmp(val, mac, len)) { - free(val); - } else { + + if (virMacAddrCompare(val, mac) == 0) { ret = strdup(list[i]); - free(val); - break; + goto out; } - } - free(list); + + VIR_FREE(val); + } + +out: + VIR_FREE(val); + VIR_FREE(list); return(ret); }

4 3

[libvirt] [PATCH] Robustify sexpr parser for NICs
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233806614 28800 # Node ID 0b9d8336e5e089b19ac8381fdc77eadc72ef9eb7 # Parent 379763c63798c9f0c426facb9b9b61e34e6477e2 Robustify sexpr parser for NICs xend can occassionally get itself confused. Avoid crashing libvirt in this case. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -1759,7 +1759,8 @@ xenDaemonParseSxprNets(virConnectPtr con if (VIR_ALLOC(net) < 0) goto no_memory; - if (tmp != NULL || (STREQ(tmp2, DEFAULT_VIF_SCRIPT))) { + if (tmp != NULL || + (tmp2 != NULL && STREQ(tmp2, DEFAULT_VIF_SCRIPT))) { net->type = VIR_DOMAIN_NET_TYPE_BRIDGE; /* XXX virtual network reverse resolve */

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[libvirt] [PATCH 0/9] eliminate almost all uses of strerror
by Jim Meyering 05 Feb '09

05 Feb '09

We know that strerror is not thread-safe, so I'm eliminating all uses from code that might be multi-threaded. I started the job with this patch: http://thread.gmane.org/gmane.comp.emulators.libvirt/11532 Here are the summaries of the upcoming change sets: eliminate strerror qemu_driver.c: use virReportSystemError instead This is the patch mentioned above. remove duplicate *SetCloseExec and *SetNonBlock functions Changes prompted by Dan's feedback (see thread). report OOMError tiny iptables.c: Use virStrerror, not strerror. qemud.c: use virStrerror, not strerror don't include raw errno in diagnostics remove remainder of offending strerror uses note: the qemud/remote.c changes that move virDomainFree calls do that merely to make that code identical to a nearby, nearly- identical function. syntax-check: enable prohibit_nonreentrant makes "make syntax-check" check for all those non-reentrant functions, but excluding virterror.c, virsh.c and console.c syntax-check: avoid spurious false-positive

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[libvirt] [PATCH] remove useless code
by Jim Meyering 05 Feb '09

05 Feb '09

Barely worth posting for review, but who knows... >From a7cae36a3d966e80d82859d63c60a303b63d6720 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Wed, 4 Feb 2009 17:44:24 +0100 Subject: [PATCH] remove useless code * src/bridge.c (brAddTap): Remove redundant errno=ENOMEM assignment after failed strdup. * src/cgroup.c (virCgroupFree): Remove redundant *group=NULL assignment after VIR_FREE(*group). --- src/bridge.c | 6 ++---- src/cgroup.c | 1 - 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/src/bridge.c b/src/bridge.c index 9c4ca74..990a567 100644 --- a/src/bridge.c +++ b/src/bridge.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007 Red Hat, Inc. + * Copyright (C) 2007, 2009 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -539,10 +539,8 @@ brAddTap(brControl *ctl, if ((errno = brSetInterfaceUp(ctl, try.ifr_name, 1))) goto error; VIR_FREE(*ifname); - if (!(*ifname = strdup(try.ifr_name))) { - errno = ENOMEM; + if (!(*ifname = strdup(try.ifr_name))) goto error; - } *tapfd = fd; return 0; } diff --git a/src/cgroup.c b/src/cgroup.c index 1b4c27f..8bd6e87 100644 --- a/src/cgroup.c +++ b/src/cgroup.c @@ -51,7 +51,6 @@ void virCgroupFree(virCgroupPtr *group) if (*group != NULL) { VIR_FREE((*group)->path); VIR_FREE(*group); - *group = NULL; } } -- 1.6.1.2.467.g081e7

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[libvirt] [PATCH] Report error for some xend operations on shutdown domain
by john.levon＠sun.com 05 Feb '09

05 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233765613 28800 # Node ID 706a43692cceeba796e36c070e2b46f85d8cb4f0 # Parent bda41ea0cbbdea409447686c30b7afb10b9cae85 Report error for some xend operations on shutdown domain Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -2833,8 +2833,13 @@ xenDaemonDomainSuspend(virDomainPtr doma __FUNCTION__); return(-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } + return xend_op(domain->conn, domain->name, "op", "pause", NULL); } @@ -2855,8 +2860,13 @@ xenDaemonDomainResume(virDomainPtr domai __FUNCTION__); return(-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } + return xend_op(domain->conn, domain->name, "op", "unpause", NULL); } @@ -2878,8 +2888,13 @@ xenDaemonDomainShutdown(virDomainPtr dom __FUNCTION__); return(-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } + return xend_op(domain->conn, domain->name, "op", "shutdown", "reason", "poweroff", NULL); } @@ -2902,8 +2917,13 @@ xenDaemonDomainReboot(virDomainPtr domai __FUNCTION__); return(-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } + return xend_op(domain->conn, domain->name, "op", "shutdown", "reason", "reboot", NULL); } @@ -2928,8 +2948,13 @@ xenDaemonDomainDestroy(virDomainPtr doma __FUNCTION__); return(-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } + return xend_op(domain->conn, domain->name, "op", "destroy", NULL); } @@ -2993,12 +3018,17 @@ xenDaemonDomainSave(virDomainPtr domain, xenDaemonDomainSave(virDomainPtr domain, const char *filename) { if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL) || - (filename == NULL) || (domain->id < 0)) { + (filename == NULL)) { virXendError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG, __FUNCTION__); return(-1); } + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); + return(-1); + } /* We can't save the state of Domain-0, that would mean stopping it too */ if (domain->id == 0) { @@ -3030,8 +3060,13 @@ xenDaemonDomainCoreDump(virDomainPtr dom __FUNCTION__); return(-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } + return xend_op(domain->conn, domain->name, "op", "dump", "file", filename, "live", "0", "crash", "0", NULL); } @@ -3599,8 +3634,12 @@ xenDaemonDomainPinVcpu(virDomainPtr doma __FUNCTION__); return (-1); } - if (domain->id < 0) + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INVALID_ARG, + _("Domain %s isn't running."), domain->name); return(-1); + } /* from bit map, build character string of mapped CPU numbers */ for (i = 0; i < maplen; i++) for (j = 0; j < 8; j++)

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