Re: [libvirt] [PATCH 04/11] Support leases in guest XML and lock manager

A lock manager may operate in various modes. The direct mode of operation is to obtain locks based on the resources associated with devices in the XML. The indirect mode is where the app creating the domain provides explicit leases for each resource that needs to be locked. This XML extension allows for listing resources in the XML <leases> <lease> <key>thequickbrownfoxjumpsoverthelazydog</key> <target path='/some/lease/path' offset='23432' length='256'/> </lease> </leases> * docs/schemas/domain.rng: Add lease schema * src/conf/domain_conf.c, src/conf/domain_conf.h: parsing and formatting for leases * tests/qemuxml2argvdata/qemuxml2argv-lease.args, tests/qemuxml2argvdata/qemuxml2argv-lease.xml, tests/qemuxml2xmltest.c: Test XML handling for leases --- docs/schemas/domain.rng | 32 ++++++

+static void virDomainLeaseDefFree(virDomainLeaseDefPtr def) +{ + if (!def) + return;

static int +virDomainLeaseDefFormat(virBufferPtr buf, + virDomainLeaseDefPtr def) +{ + virBufferAddLit(buf, " <lease>\n"); + virBufferEscapeString(buf, " <key>%s</key>\n", def->key); + virBufferEscapeString(buf, " <target path='%s'", def->path); + if (def->offset) + virBufferVSprintf(buf, " offset='%llu'", def->offset); + if (def->length) + virBufferVSprintf(buf, " length='%llu'", def->length); + virBufferAddLit(buf, "/>\n"); + virBufferAddLit(buf, " </lease>\n");

+typedef virDomainLeaseDef *virDomainLeaseDefPtr; +struct _virDomainLeaseDef { + char *key; + char *path; + unsigned long long offset; + unsigned long long length;