On Thursday, 30 March 2017 at 10:03 PM, Martin Kletzander wrote:

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/virsysfs.c | 17 ++++++++++++++++-
src/util/virsysfs.h | 6 ++++++
3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 9e61accda3fc..3965ef3f89c9 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2621,6 +2621,7 @@ virVasprintfInternal;


# util/virsysfs.h
+virSysfsDirOpen;
virSysfsGetCpuValueBitmap;
virSysfsGetCpuValueInt;
virSysfsGetCpuValueString;
diff --git a/src/util/virsysfs.c b/src/util/virsysfs.c
index c482e188a301..6686d8ddbfcb 100644
--- a/src/util/virsysfs.c
+++ b/src/util/virsysfs.c
@@ -25,7 +25,6 @@
#include "virsysfspriv.h"

#include "viralloc.h"
-#include "virfile.h"
#include "virlog.h"
#include "virstring.h"

@@ -120,6 +119,22 @@ virSysfsGetValueBitmap(const char *file,
* Per-CPU getters
*/
int
+virSysfsDirOpen(const char *file,
+ DIR **dirp)
+{
+ char *path = NULL;
+
+ if (virAsprintf(&path, "%s/%s", sysfs_system_path, file) < 0)
+ return -1;
+
+ if (!virFileIsDir(path))
+ return -2;
+
+ return virDirOpen(dirp, path);
+}
+
what if I need another util function like:
 virSysfsDirResctrlOpen(const char *file, DIR **dirp)

do another copy and just modify path as:

if (virAsprintf(&path, "%s/%s", sysfs_resctrl_path, file) < 0)

is that okay for you to duplicated code like this?

This is not so common a way to adding utils functions.

If I need another `sysfs_system_path`, for /sys/fs/resctrl
I need to add a new variable sysfs_resctrl_path, then do a copy
of this function with some modification.

Eli.
+ DIR **dirp)
+
+int
virSysfsGetCpuValueInt(unsigned int cpu,
const char *file,
int *value)
diff --git a/src/util/virsysfs.h b/src/util/virsysfs.h
index 1b24fc193a16..ff5012d62747 100644
--- a/src/util/virsysfs.h
+++ b/src/util/virsysfs.h
@@ -23,6 +23,8 @@

# include "internal.h"
# include "virbitmap.h"
+# include "virfile.h"
+

/*
* Generic getters
@@ -41,6 +43,10 @@ int
virSysfsGetValueBitmap(const char *file,
virBitmapPtr *value);

+int
+virSysfsDirOpen(const char *file,
+ DIR **dirp);
+

/*
* Per-CPU getters
--
2.12.2

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