[libvirt PATCHv4 13/15] qemu: use the vhost-user schemas to find binary

Look into /usr/share/qemu/vhost-user to see whether we can find a suitable virtiofsd binary, in case the user did not provide one in the domain XML. Signed-off-by: Ján Tomko <jtomko(a)redhat.com&gt; Reviewed-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/qemu/qemu_extdevice.c | 9 +++++++++ src/qemu/qemu_vhost_user.c | 40 ++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_vhost_user.h | 4 ++++ src/qemu/qemu_virtiofs.c | 11 +++++++++++ src/qemu/qemu_virtiofs.h | 4 ++++ 5 files changed, 68 insertions(+) diff --git a/src/qemu/qemu_extdevice.c b/src/qemu/qemu_extdevice.c index 31655b7f0a..699b4daade 100644 --- a/src/qemu/qemu_extdevice.c +++ b/src/qemu/qemu_extdevice.c @@ -105,6 +105,15 @@ qemuExtDevicesPrepareDomain(virQEMUDriverPtr driver, } } + for (i = 0; i < vm->def->nfss; i++) { + virDomainFSDefPtr fs = vm->def->fss[i]; + + if (fs->fsdriver == VIR_DOMAIN_FS_DRIVER_TYPE_VIRTIOFS) { + if (qemuVirtioFSPrepareDomain(driver, fs) < 0) + return -1; + } + } + return ret; } diff --git a/src/qemu/qemu_vhost_user.c b/src/qemu/qemu_vhost_user.c index 4c25b30664..d437fd1bd5 100644 --- a/src/qemu/qemu_vhost_user.c +++ b/src/qemu/qemu_vhost_user.c @@ -416,3 +416,43 @@ qemuVhostUserFillDomainGPU(virQEMUDriverPtr driver, VIR_FREE(vus); return ret; } + + +int +qemuVhostUserFillDomainFS(virQEMUDriverPtr driver, + virDomainFSDefPtr fs) +{ + qemuVhostUserPtr *vus = NULL; + ssize_t nvus = 0; + ssize_t i; + int ret = -1; + + if ((nvus = qemuVhostUserFetchParsedConfigs(driver->privileged, + &vus, NULL)) < 0) + goto end; + + for (i = 0; i < nvus; i++) { + qemuVhostUserPtr vu = vus[i]; + + if (vu->type != QEMU_VHOST_USER_TYPE_FS) + continue; + + g_free(fs->binary); + fs->binary = g_strdup(vu->binary); + break; + } + + if (i == nvus) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("Unable to find a satisfying virtiofsd")); + goto end; + } + + ret = 0; + + end: + for (i = 0; i < nvus; i++) + qemuVhostUserFree(vus[i]); + g_free(vus); + return ret; +} diff --git a/src/qemu/qemu_vhost_user.h b/src/qemu/qemu_vhost_user.h index 369ba00caa..e505c8a473 100644 --- a/src/qemu/qemu_vhost_user.h +++ b/src/qemu/qemu_vhost_user.h @@ -45,3 +45,7 @@ qemuVhostUserFetchConfigs(char ***configs, int qemuVhostUserFillDomainGPU(virQEMUDriverPtr driver, virDomainVideoDefPtr video); + +int +qemuVhostUserFillDomainFS(virQEMUDriverPtr driver, + virDomainFSDefPtr fs); diff --git a/src/qemu/qemu_virtiofs.c b/src/qemu/qemu_virtiofs.c index 9e354a30c6..b53e5b0806 100644 --- a/src/qemu/qemu_virtiofs.c +++ b/src/qemu/qemu_virtiofs.c @@ -28,6 +28,7 @@ #include "qemu_conf.h" #include "qemu_extdevice.h" #include "qemu_security.h" +#include "qemu_vhost_user.h" #include "qemu_virtiofs.h" #include "virpidfile.h" @@ -326,3 +327,13 @@ qemuVirtioFSSetupCgroup(virQEMUDriverPtr driver, return 0; } + +int +qemuVirtioFSPrepareDomain(virQEMUDriverPtr driver, + virDomainFSDefPtr fs) +{ + if (fs->binary) + return 0; + + return qemuVhostUserFillDomainFS(driver, fs); +} diff --git a/src/qemu/qemu_virtiofs.h b/src/qemu/qemu_virtiofs.h index 341fed1def..b70b2f1b6a 100644 --- a/src/qemu/qemu_virtiofs.h +++ b/src/qemu/qemu_virtiofs.h @@ -42,3 +42,7 @@ qemuVirtioFSSetupCgroup(virQEMUDriverPtr driver, virDomainDefPtr def, virDomainFSDefPtr fs, virCgroupPtr cgroup); + +int +qemuVirtioFSPrepareDomain(virQEMUDriverPtr driver, + virDomainFSDefPtr fs); -- 2.24.1