4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * (C) Copyright 2012 Commissariat a l'energie atomique et aux energies
8 * Copyright (c) 2016, Intel Corporation.
11 * All rights reserved. This program and the accompanying materials
12 * are made available under the terms of the GNU Lesser General Public License
13 * (LGPL) version 2.1 or (at your discretion) any later version.
14 * (LGPL) version 2.1 accompanies this distribution, and is available at
15 * http://www.gnu.org/licenses/lgpl-2.1.html
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Lesser General Public License for more details.
27 * lustre/utils/lustreapi_internal.h
29 * Copyright (c) 2016 Intel Corporation.
31 * Author: Aurelien Degremont <aurelien.degremont@cea.fr>
32 * Author: JC Lafoucriere <jacques-charles.lafoucriere@cea.fr>
33 * Author: Thomas Leibovici <thomas.leibovici@cea.fr>
36 #ifndef _LUSTREAPI_INTERNAL_H_
37 #define _LUSTREAPI_INTERNAL_H_
42 #include <libcfs/util/ioctl.h>
43 #include <libcfs/util/param.h>
45 #include <linux/lustre/lustre_ioctl.h>
46 #include <linux/lustre/lustre_kernelcomm.h>
48 #define MAX_IOC_BUFLEN 8192
51 #define WANT_FSNAME 0x2
53 #define WANT_INDEX 0x8
54 #define WANT_ERROR 0x10
56 /* mount point listings in /proc/mounts */
58 #define PROC_MOUNTS "/proc/mounts"
61 int get_root_path(int want, char *fsname, int *outfd, char *path, int index);
62 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
64 int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len);
65 int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len);
66 int sattr_cache_get_defaults(const char *const fsname,
67 const char *const pathname, unsigned int *scount,
68 unsigned int *ssize, unsigned int *soffset);
71 * Often when determining the parameter path in sysfs/procfs we
72 * are often only interest set of data. This enum gives use the
73 * ability to return data of parameters for:
75 * FILTER_BY_FS_NAME: a specific file system mount
76 * FILTER_BY_PATH: Using a Lustre file path to determine which
77 * file system is of interest
78 * FILTER_BY_EXACT: The default behavior. Search the parameter
88 int get_lustre_param_path(const char *obd_type, const char *filter,
89 enum param_filter type, const char *param_name,
91 int get_lustre_param_value(const char *obd_type, const char *filter,
92 enum param_filter type, const char *param_name,
93 char *value, size_t val_len);
96 poolpath(glob_t *pool_path, const char *fsname, char *pathname)
101 rc = get_lustre_param_path("lov", fsname, FILTER_BY_FS_NAME,
104 rc = get_lustre_param_path("lov", pathname, FILTER_BY_PATH,
109 #define LLAPI_LAYOUT_MAGIC 0x11AD1107 /* LLAPILOT */
111 /* Helper functions for testing validity of stripe attributes. */
113 static inline bool llapi_stripe_size_is_aligned(uint64_t size)
115 return (size & (LOV_MIN_STRIPE_SIZE - 1)) == 0;
118 static inline bool llapi_stripe_size_is_too_big(uint64_t size)
120 return size >= (1ULL << 32);
123 static inline bool llapi_stripe_count_is_valid(int64_t count)
125 return count >= -1 && count <= LOV_MAX_STRIPE_COUNT;
128 static inline bool llapi_stripe_index_is_valid(int64_t index)
130 return index >= -1 && index <= LOV_V1_INSANE_STRIPE_COUNT;
133 /* Compatibility macro for legacy llapi functions that use "offset"
134 * terminology instead of the preferred "index". */
135 #define llapi_stripe_offset_is_valid(os) llapi_stripe_index_is_valid(os)
138 * Kernel communication for Changelogs and HSM requests.
140 int libcfs_ukuc_start(struct lustre_kernelcomm *l, int groups, int rfd_flags);
141 int libcfs_ukuc_stop(struct lustre_kernelcomm *l);
142 int libcfs_ukuc_get_rfd(struct lustre_kernelcomm *link);
143 int libcfs_ukuc_msg_get(struct lustre_kernelcomm *l, char *buf, int maxsize,
145 #endif /* _LUSTREAPI_INTERNAL_H_ */