[libvirt] [PATCH 05/47] vircgroup: extract virCgroupV1ValidateMachineGroup
Fabiano Fidêncio
fidencio at redhat.com
Thu Sep 20 06:29:01 UTC 2018
On Tue, Sep 18, 2018 at 5:45 PM, Pavel Hrdina <phrdina at redhat.com> wrote:
> Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
>
Reviewed-by: Fabiano Fidêncio <fidencio at redhat.com>
> ---
> src/util/vircgroup.c | 85 +------------------------------------
> src/util/vircgroupbackend.h | 7 +++
> src/util/vircgrouppriv.h | 2 +
> src/util/vircgroupv1.c | 84 ++++++++++++++++++++++++++++++++++++
> 4 files changed, 95 insertions(+), 83 deletions(-)
>
> diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
> index 0ffb5db93c..9d6eebc2b9 100644
> --- a/src/util/vircgroup.c
> +++ b/src/util/vircgroup.c
> @@ -218,7 +218,7 @@ virCgroupPartitionNeedsEscaping(const char *path)
> }
>
>
> -static int
> +int
> virCgroupPartitionEscape(char **path)
> {
> int rc;
> @@ -237,87 +237,6 @@ virCgroupPartitionEscape(char **path)
> }
>
>
> -static bool
> -virCgroupValidateMachineGroup(virCgroupPtr group,
> - const char *name,
> - const char *drivername,
> - const char *machinename)
> -{
> - size_t i;
> - VIR_AUTOFREE(char *) partname = NULL;
> - VIR_AUTOFREE(char *) scopename_old = NULL;
> - VIR_AUTOFREE(char *) scopename_new = NULL;
> - VIR_AUTOFREE(char *) partmachinename = NULL;
> -
> - if (virAsprintf(&partname, "%s.libvirt-%s",
> - name, drivername) < 0)
> - return false;
> -
> - if (virCgroupPartitionEscape(&partname) < 0)
> - return false;
> -
> - if (virAsprintf(&partmachinename, "%s.libvirt-%s",
> - machinename, drivername) < 0 ||
> - virCgroupPartitionEscape(&partmachinename) < 0)
> - return false;
> -
> - if (!(scopename_old = virSystemdMakeScopeName(name, drivername,
> true)))
> - return false;
> -
> - if (!(scopename_new = virSystemdMakeScopeName(machinename,
> - drivername, false)))
> - return false;
> -
> - if (virCgroupPartitionEscape(&scopename_old) < 0)
> - return false;
> -
> - if (virCgroupPartitionEscape(&scopename_new) < 0)
> - return false;
> -
> - for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
> - char *tmp;
> -
> - if (i == VIR_CGROUP_CONTROLLER_SYSTEMD)
> - continue;
> -
> - if (!group->controllers[i].placement)
> - continue;
> -
> - tmp = strrchr(group->controllers[i].placement, '/');
> - if (!tmp)
> - return false;
> -
> - if (i == VIR_CGROUP_CONTROLLER_CPU ||
> - i == VIR_CGROUP_CONTROLLER_CPUACCT ||
> - i == VIR_CGROUP_CONTROLLER_CPUSET) {
> - if (STREQ(tmp, "/emulator"))
> - *tmp = '\0';
> - tmp = strrchr(group->controllers[i].placement, '/');
> - if (!tmp)
> - return false;
> - }
> -
> - tmp++;
> -
> - if (STRNEQ(tmp, name) &&
> - STRNEQ(tmp, machinename) &&
> - STRNEQ(tmp, partname) &&
> - STRNEQ(tmp, partmachinename) &&
> - STRNEQ(tmp, scopename_old) &&
> - STRNEQ(tmp, scopename_new)) {
> - VIR_DEBUG("Name '%s' for controller '%s' does not match "
> - "'%s', '%s', '%s', '%s' or '%s'",
> - tmp, virCgroupControllerTypeToString(i),
> - name, machinename, partname,
> - scopename_old, scopename_new);
> - return false;
> - }
> - }
> -
> - return true;
> -}
> -
> -
> static int
> virCgroupCopyMounts(virCgroupPtr group,
> virCgroupPtr parent)
> @@ -1502,7 +1421,7 @@ virCgroupNewDetectMachine(const char *name,
> return -1;
> }
>
> - if (!virCgroupValidateMachineGroup(*group, name, drivername,
> machinename)) {
> + if (!(*group)->backend->validateMachineGroup(*group, name,
> drivername, machinename)) {
> VIR_DEBUG("Failed to validate machine name for '%s' driver '%s'",
> name, drivername);
> virCgroupFree(group);
> diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
> index 88f51416b0..daf47bac09 100644
> --- a/src/util/vircgroupbackend.h
> +++ b/src/util/vircgroupbackend.h
> @@ -35,11 +35,18 @@ typedef enum {
> typedef bool
> (*virCgroupAvailableCB)(void);
>
> +typedef bool
> +(*virCgroupValidateMachineGroupCB)(virCgroupPtr group,
> + const char *name,
> + const char *drivername,
> + const char *machinename);
> +
> struct _virCgroupBackend {
> virCgroupBackendType type;
>
> /* Mandatory callbacks that need to be implemented for every backend.
> */
> virCgroupAvailableCB available;
> + virCgroupValidateMachineGroupCB validateMachineGroup;
> };
> typedef struct _virCgroupBackend virCgroupBackend;
> typedef virCgroupBackend *virCgroupBackendPtr;
> diff --git a/src/util/vircgrouppriv.h b/src/util/vircgrouppriv.h
> index 2caa966fee..e7f4a1f0fc 100644
> --- a/src/util/vircgrouppriv.h
> +++ b/src/util/vircgrouppriv.h
> @@ -53,6 +53,8 @@ struct _virCgroup {
> virCgroupController controllers[VIR_CGROUP_CONTROLLER_LAST];
> };
>
> +int virCgroupPartitionEscape(char **path);
> +
> int virCgroupNewPartition(const char *path,
> bool create,
> int controllers,
> diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
> index c5bd2f6a3b..48e3d412ae 100644
> --- a/src/util/vircgroupv1.c
> +++ b/src/util/vircgroupv1.c
> @@ -35,6 +35,8 @@
> #include "vircgroupv1.h"
> #include "virfile.h"
> #include "virlog.h"
> +#include "virstring.h"
> +#include "virsystemd.h"
>
> VIR_LOG_INIT("util.cgroup");
>
> @@ -76,10 +78,92 @@ virCgroupV1Available(void)
> }
>
>
> +static bool
> +virCgroupV1ValidateMachineGroup(virCgroupPtr group,
> + const char *name,
> + const char *drivername,
> + const char *machinename)
> +{
> + size_t i;
> + VIR_AUTOFREE(char *) partname = NULL;
> + VIR_AUTOFREE(char *) scopename_old = NULL;
> + VIR_AUTOFREE(char *) scopename_new = NULL;
> + VIR_AUTOFREE(char *) partmachinename = NULL;
> +
> + if (virAsprintf(&partname, "%s.libvirt-%s",
> + name, drivername) < 0)
> + return false;
> +
> + if (virCgroupPartitionEscape(&partname) < 0)
> + return false;
> +
> + if (virAsprintf(&partmachinename, "%s.libvirt-%s",
> + machinename, drivername) < 0 ||
> + virCgroupPartitionEscape(&partmachinename) < 0)
> + return false;
> +
> + if (!(scopename_old = virSystemdMakeScopeName(name, drivername,
> true)))
> + return false;
> +
> + if (!(scopename_new = virSystemdMakeScopeName(machinename,
> + drivername, false)))
> + return false;
> +
> + if (virCgroupPartitionEscape(&scopename_old) < 0)
> + return false;
> +
> + if (virCgroupPartitionEscape(&scopename_new) < 0)
> + return false;
> +
> + for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
> + char *tmp;
> +
> + if (i == VIR_CGROUP_CONTROLLER_SYSTEMD)
> + continue;
> +
> + if (!group->controllers[i].placement)
> + continue;
> +
> + tmp = strrchr(group->controllers[i].placement, '/');
> + if (!tmp)
> + return false;
> +
> + if (i == VIR_CGROUP_CONTROLLER_CPU ||
> + i == VIR_CGROUP_CONTROLLER_CPUACCT ||
> + i == VIR_CGROUP_CONTROLLER_CPUSET) {
> + if (STREQ(tmp, "/emulator"))
> + *tmp = '\0';
> + tmp = strrchr(group->controllers[i].placement, '/');
> + if (!tmp)
> + return false;
> + }
> +
> + tmp++;
> +
> + if (STRNEQ(tmp, name) &&
> + STRNEQ(tmp, machinename) &&
> + STRNEQ(tmp, partname) &&
> + STRNEQ(tmp, partmachinename) &&
> + STRNEQ(tmp, scopename_old) &&
> + STRNEQ(tmp, scopename_new)) {
> + VIR_DEBUG("Name '%s' for controller '%s' does not match "
> + "'%s', '%s', '%s', '%s' or '%s'",
> + tmp, virCgroupV1ControllerTypeToString(i),
> + name, machinename, partname,
> + scopename_old, scopename_new);
> + return false;
> + }
> + }
> +
> + return true;
> +}
> +
> +
> virCgroupBackend virCgroupV1Backend = {
> .type = VIR_CGROUP_BACKEND_TYPE_V1,
>
> .available = virCgroupV1Available,
> + .validateMachineGroup = virCgroupV1ValidateMachineGroup,
> };
>
>
> --
> 2.17.1
>
> --
> libvir-list mailing list
> libvir-list at redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list
>
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