[libvirt] [PATCHv7 03/18] util: Refactor code for determining allocation path
The code for determining resctrl allocation path could be reused
for monitor. Refactor it for reuse.
Signed-off-by: Wang Huaqiang <huaqiang.wang(a)intel.com>
---
src/util/virresctrl.c | 38 ++++++++++++++++++++++++++++++--------
1 file changed, 30 insertions(+), 8 deletions(-)
diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
index 6530801..956aca8 100644
--- a/src/util/virresctrl.c
+++ b/src/util/virresctrl.c
@@ -2265,28 +2265,50 @@ virResctrlAllocAssign(virResctrlInfoPtr resctrl,
}
+static char *
+virResctrlDeterminePath(const char *parentpath,
+ const char *prefix,
+ const char *id)
+{
+ char *path = NULL;
+
+ if (!id) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Resctrl ID must be set before determining resctrl "
+ "parentpath='%s'"), parentpath);
+ return NULL;
+ }
+
+ if (virAsprintf(&path, "%s/%s-%s", parentpath, prefix, id) < 0)
+ return NULL;
+
+ return path;
+}
+
+
int
virResctrlAllocDeterminePath(virResctrlAllocPtr alloc,
const char *machinename)
{
- if (!alloc->id) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Resctrl Allocation ID must be set before
creation"));
+ if (alloc->path) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Resctrl allocation path is already set to
'%s'"),
+ alloc->path);
return -1;
}
/* If the allocation is empty, then the path will be SYSFS_RESCTRL_PATH */
if (virResctrlAllocIsEmpty(alloc)) {
- if (!alloc->path &&
- VIR_STRDUP(alloc->path, SYSFS_RESCTRL_PATH) < 0)
+ if (VIR_STRDUP(alloc->path, SYSFS_RESCTRL_PATH) < 0)
return -1;
return 0;
}
- if (!alloc->path &&
- virAsprintf(&alloc->path, "%s/%s-%s",
- SYSFS_RESCTRL_PATH, machinename, alloc->id) < 0)
+ alloc->path = virResctrlDeterminePath(SYSFS_RESCTRL_PATH,
+ machinename, alloc->id);
+
+ if (!alloc->path)
return -1;
return 0;
--
2.7.4