X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Futils%2Flustreapi_internal.h;h=6730a9d751f7e52b210692a1c5468e551f9b9ca6;hb=e14246641c04c9e3004043f58f469532223d06d6;hp=a5d7ac15b204e3f586b058f50876b945b0f70a8c;hpb=fd44a6d8c71e59ed54b36b2b15e2bdd2b9a74d38;p=fs%2Flustre-release.git

diff --git a/lustre/utils/lustreapi_internal.h b/lustre/utils/lustreapi_internal.h
index a5d7ac1..6730a9d 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 <libcfs/util/param.h>
 #include <uapi_kernelcomm.h>
 
 #define WANT_PATH   0x1
@@ -42,11 +43,53 @@
 #define WANT_FD     0x4
 #define WANT_INDEX  0x8
 #define WANT_ERROR  0x10
+
+/* mount point listings in /proc/mounts */
+#ifndef PROC_MOUNTS
+#define PROC_MOUNTS "/proc/mounts"
+#endif
+
 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 */
 
@@ -84,5 +127,4 @@ int libcfs_ukuc_stop(struct lustre_kernelcomm *l);
 int libcfs_ukuc_get_rfd(struct lustre_kernelcomm *link);
 int libcfs_ukuc_msg_get(struct lustre_kernelcomm *l, char *buf, int maxsize,
 			int transport);
-
 #endif /* _LUSTREAPI_INTERNAL_H_ */