4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * libcfs/include/libcfs/libcfs_string.h
34 * Generic string manipulation functions.
36 * Author: Nathan Rutman <nathan.rutman@sun.com>
39 #ifndef __LIBCFS_UTIL_STRING_H__
40 #define __LIBCFS_UTIL_STRING_H__
45 #include <linux/types.h>
46 #include <linux/lnet/lnet-types.h>
47 #include <libcfs/util/list.h>
50 int vscnprintf(char *buf, size_t bufsz, const char *format, va_list args)
57 ret = vsnprintf(buf, bufsz, format, args);
58 return (bufsz > ret) ? ret : bufsz - 1;
61 /* __printf from linux kernel */
63 #define __printf(a, b) __attribute__((__format__(printf, a, b)))
67 static inline int scnprintf(char *buf, size_t bufsz, const char *format, ...)
72 va_start(args, format);
73 ret = vscnprintf(buf, bufsz, format, args);
83 void (*nf_addr2str)(__u32 addr, char *str, size_t size);
84 int (*nf_str2addr)(const char *str, int nob, __u32 *addr);
85 int (*nf_parse_addrlist)(char *str, int len,
86 struct list_head *list);
87 int (*nf_print_addrlist)(char *buffer, int count,
88 struct list_head *list);
89 int (*nf_match_addr)(__u32 addr, struct list_head *list);
90 int (*nf_min_max)(struct list_head *nidlist, __u32 *min_nid,
92 int (*nf_expand_addrrange)(struct list_head *addrranges,
93 __u32 *addrs, int max_addrs);
97 * Structure to represent NULL-less strings.
105 * Structure to represent \<range_expr\> token of the syntax.
107 struct cfs_range_expr {
109 * Link to cfs_expr_list::el_exprs.
111 struct list_head re_link;
117 struct cfs_expr_list {
118 struct list_head el_link;
119 struct list_head el_exprs;
122 int cfs_expr_list_values(struct cfs_expr_list *expr_list, int max, __u32 **valpp);
123 int cfs_gettok(struct cfs_lstr *next, char delim, struct cfs_lstr *res);
124 int cfs_str2num_check(char *str, int nob, unsigned *num,
125 unsigned min, unsigned max);
126 int cfs_expr2str(struct list_head *list, char *str, size_t size);
127 int cfs_expr_list_match(__u32 value, struct cfs_expr_list *expr_list);
128 int cfs_expr_list_print(char *buffer, int count,
129 struct cfs_expr_list *expr_list);
130 int cfs_expr_list_parse(char *str, int len, unsigned min, unsigned max,
131 struct cfs_expr_list **elpp);
132 void cfs_expr_list_free(struct cfs_expr_list *expr_list);
133 void cfs_expr_list_free_list(struct list_head *list);
134 int cfs_ip_addr_parse(char *str, int len, struct list_head *list);
135 int cfs_ip_addr_range_gen(__u32 *ip_list, int count,
136 struct list_head *ip_addr_expr);
137 int cfs_ip_addr_match(__u32 addr, struct list_head *list);
138 int cfs_expand_nidlist(struct list_head *nidlist, lnet_nid_t *lnet_nidlist,
140 int cfs_parse_nid_parts(char *str, struct list_head *addr,
141 struct list_head *net_num, __u32 *net_type);
142 int cfs_abs_path(const char *request_path, char **resolved_path);