X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Futils%2Flustreapi_internal.h;h=00a66e3985a406e9df52323cf2b2363ba64c888b;hb=8813fdf2a4f2055e4867df653644f12ac4c78b15;hp=a5d7ac15b204e3f586b058f50876b945b0f70a8c;hpb=9587d10a7e7e1839572d24bdf3b645df462c10f4;p=fs%2Flustre-release.git

diff --git a/lustre/utils/lustreapi_internal.h b/lustre/utils/lustreapi_internal.h
index a5d7ac1..00a66e3 100644
--- a/lustre/utils/lustreapi_internal.h
+++ b/lustre/utils/lustreapi_internal.h
@@ -35,6 +35,7 @@
 #ifndef _LUSTREAPI_INTERNAL_H_
 #define _LUSTREAPI_INTERNAL_H_
 
+#include <glob.h>
 #include <uapi_kernelcomm.h>
 
 #define WANT_PATH   0x1
@@ -45,8 +46,44 @@
 int get_root_path(int want, char *fsname, int *outfd, char *path, int index);
 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
 	       int want_error);
-int get_param(const char *param_path, char *result,
-	      unsigned int result_size);
+
+/**
+ * Often when determining the parameter path in sysfs/procfs we
+ * are often only interest set of data. This enum gives use the
+ * ability to return data of parameters for:
+ *
+ * FILTER_BY_FS_NAME: a specific file system mount
+ * FILTER_BY_PATH:    Using a Lustre file path to determine which
+ *		      file system is of interest
+ * FILTER_BY_EXACT:   The default behavior. Search the parameter
+ *		      path as is.
+ */
+enum param_filter {
+	FILTER_BY_EXACT,
+	FILTER_BY_FS_NAME,
+	FILTER_BY_PATH
+};
+
+int get_lustre_param_path(const char *obd_type, const char *filter,
+			  enum param_filter type, const char *param_name,
+			  glob_t *param);
+int get_lustre_param_value(const char *obd_type, const char *filter,
+			   enum param_filter type, const char *param_name,
+			   char *value, size_t val_len);
+
+static inline int
+poolpath(glob_t *pool_path, const char *fsname, char *pathname)
+{
+	int rc;
+
+	if (fsname != NULL)
+		rc = get_lustre_param_path("lov", fsname, FILTER_BY_FS_NAME,
+					   "pools", pool_path);
+	else
+		rc = get_lustre_param_path("lov", pathname, FILTER_BY_PATH,
+					   "pools", pool_path);
+	return rc;
+}
 
 #define LLAPI_LAYOUT_MAGIC 0x11AD1107 /* LLAPILOT */