diff options
Diffstat (limited to 'drivers/staging/lustre/include/linux/libcfs/libcfs_string.h')
| -rw-r--r-- | drivers/staging/lustre/include/linux/libcfs/libcfs_string.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_string.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_string.h new file mode 100644 index 000000000000..a6bac9c36339 --- /dev/null +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_string.h @@ -0,0 +1,137 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2012, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * libcfs/include/libcfs/libcfs_string.h + * + * Generic string manipulation functions. + * + * Author: Nathan Rutman <nathan.rutman@sun.com> + */ + +#ifndef __LIBCFS_STRING_H__ +#define __LIBCFS_STRING_H__ + +/* libcfs_string.c */ +/* string comparison ignoring case */ +int cfs_strncasecmp(const char *s1, const char *s2, size_t n); +/* Convert a text string to a bitmask */ +int cfs_str2mask(const char *str, const char *(*bit2str)(int bit), + int *oldmask, int minmask, int allmask); + +/* Allocate space for and copy an existing string. + * Must free with kfree(). + */ +char *cfs_strdup(const char *str, u_int32_t flags); + +/* safe vsnprintf */ +int cfs_vsnprintf(char *buf, size_t size, const char *fmt, va_list args); + +/* safe snprintf */ +int cfs_snprintf(char *buf, size_t size, const char *fmt, ...); + +/* trim leading and trailing space characters */ +char *cfs_firststr(char *str, size_t size); + +/** + * Structure to represent NULL-less strings. + */ +struct cfs_lstr { + char *ls_str; + int ls_len; +}; + +/* + * Structure to represent \<range_expr\> token of the syntax. + */ +struct cfs_range_expr { + /* + * Link to cfs_expr_list::el_exprs. + */ + struct list_head re_link; + __u32 re_lo; + __u32 re_hi; + __u32 re_stride; +}; + +struct cfs_expr_list { + struct list_head el_link; + struct list_head el_exprs; +}; + +static inline int +cfs_iswhite(char c) +{ + switch (c) { + case ' ': + case '\t': + case '\n': + case '\r': + return 1; + default: + break; + } + return 0; +} + +char *cfs_trimwhite(char *str); +int cfs_gettok(struct cfs_lstr *next, char delim, struct cfs_lstr *res); +int cfs_str2num_check(char *str, int nob, unsigned *num, + unsigned min, unsigned max); +int cfs_range_expr_parse(struct cfs_lstr *src, unsigned min, unsigned max, + int single_tok, struct cfs_range_expr **expr); +int cfs_expr_list_match(__u32 value, struct cfs_expr_list *expr_list); +int cfs_expr_list_values(struct cfs_expr_list *expr_list, + int max, __u32 **values); +static inline void +cfs_expr_list_values_free(__u32 *values, int num) +{ + /* This array is allocated by LIBCFS_ALLOC(), so it shouldn't be freed + * by OBD_FREE() if it's called by module other than libcfs & LNet, + * otherwise we will see fake memory leak */ + LIBCFS_FREE(values, num * sizeof(values[0])); +} + +void cfs_expr_list_free(struct cfs_expr_list *expr_list); +void cfs_expr_list_print(struct cfs_expr_list *expr_list); +int cfs_expr_list_parse(char *str, int len, unsigned min, unsigned max, + struct cfs_expr_list **elpp); +void cfs_expr_list_free_list(struct list_head *list); +int cfs_ip_addr_parse(char *str, int len, struct list_head *list); +int cfs_ip_addr_match(__u32 addr, struct list_head *list); +void cfs_ip_addr_free(struct list_head *list); + +#define strtoul(str, endp, base) simple_strtoul(str, endp, base) + +#endif |