* (C) Copyright 2012 Commissariat a l'energie atomique et aux energies
* alternatives
*
+ * Copyright (c) 2016, 2017, Intel Corporation.
+ *
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser General Public License
* (LGPL) version 2.1 or (at your discretion) any later version.
*
* lustre/utils/lustreapi_internal.h
*
- */
-/*
- *
* Author: Aurelien Degremont <aurelien.degremont@cea.fr>
* Author: JC Lafoucriere <jacques-charles.lafoucriere@cea.fr>
* Author: Thomas Leibovici <thomas.leibovici@cea.fr>
#ifndef _LUSTREAPI_INTERNAL_H_
#define _LUSTREAPI_INTERNAL_H_
+#include <limits.h>
+#include <stdint.h>
+
+#include <libcfs/util/ioctl.h>
+#include <libcfs/util/param.h>
+
+#include <linux/lustre/lustre_ioctl.h>
+#include <linux/lustre/lustre_kernelcomm.h>
+
+#define MAX_IOC_BUFLEN 8192
+
#define WANT_PATH 0x1
#define WANT_FSNAME 0x2
#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);
+int llapi_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len);
+int llapi_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len);
+int sattr_cache_get_defaults(const char *const fsname,
+ const char *const pathname, unsigned int *scount,
+ unsigned int *ssize, unsigned int *soffset);
+
+/**
+ * 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_NONE,
+ 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 */
return index >= -1 && index <= LOV_V1_INSANE_STRIPE_COUNT;
}
+static inline bool llapi_pool_name_is_valid(char **pool_name,
+ const char *fsname)
+{
+ char *ptr;
+
+ if (*pool_name == NULL)
+ return false;
+
+ /**
+ * in case user gives the full pool name <fsname>.<poolname>,
+ * strip the fsname
+ */
+ ptr = strchr(*pool_name, '.');
+ if (ptr != NULL) {
+ *ptr = '\0';
+ if (fsname != NULL && strcmp(*pool_name, fsname) != 0) {
+ *ptr = '.';
+ return false;
+ }
+ *pool_name = ptr + 1;
+ }
+
+ if (strlen(*pool_name) > LOV_MAXPOOLNAME)
+ return false;
+
+ return true;
+}
+
+
+int llapi_layout_search_ost(__u32 ost, char *pname, char *fsname);
+
/* Compatibility macro for legacy llapi functions that use "offset"
* terminology instead of the preferred "index". */
#define llapi_stripe_offset_is_valid(os) llapi_stripe_index_is_valid(os)
+static inline bool llapi_dir_stripe_count_is_valid(int64_t count)
+{
+ return count >= -1 && count <= LMV_MAX_STRIPE_COUNT;
+}
+
+static inline bool llapi_dir_stripe_index_is_valid(int64_t index)
+{
+ return index >= -1 && index < LMV_MAX_STRIPE_COUNT;
+}
+
+static inline bool llapi_dir_hash_type_is_valid(int64_t hash)
+{
+ int64_t _hash = hash & LMV_HASH_TYPE_MASK;
+
+ return _hash >= LMV_HASH_TYPE_UNKNOWN && _hash < LMV_HASH_TYPE_MAX;
+}
+
+/*
+ * Kernel communication for Changelogs and HSM requests.
+ */
+int libcfs_ukuc_start(struct lustre_kernelcomm *l, int groups, int rfd_flags);
+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);
+
+enum get_lmd_info_type {
+ GET_LMD_INFO = 1,
+ GET_LMD_STRIPE = 2,
+};
+
+int get_lmd_info_fd(const char *path, int parentfd, int dirfd,
+ void *lmd_buf, int lmd_len, enum get_lmd_info_type type);
+
+int lov_comp_md_size(struct lov_comp_md_v1 *lcm);
#endif /* _LUSTREAPI_INTERNAL_H_ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff