* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <libcfs/libcfs.h>
-/* non-0 = don't match */
-int cfs_strncasecmp(const char *s1, const char *s2, size_t n)
+char *cfs_strrstr(const char *haystack, const char *needle)
{
- if (s1 == NULL || s2 == NULL)
- return 1;
+ char *ptr;
- if (n == 0)
- return 0;
+ if (unlikely(haystack == NULL || needle == NULL))
+ return NULL;
- while (n-- != 0 && tolower(*s1) == tolower(*s2)) {
- if (n == 0 || *s1 == '\0' || *s2 == '\0')
- break;
- s1++;
- s2++;
- }
+ if (strlen(needle) == 1)
+ return strrchr(haystack, needle[0]);
+
+ ptr = strstr(haystack, needle);
+ if (ptr != NULL) {
+ while (1) {
+ char *tmp;
- return tolower(*(unsigned char *)s1) - tolower(*(unsigned char *)s2);
+ tmp = strstr(&ptr[1], needle);
+ if (tmp == NULL)
+ return ptr;
+
+ ptr = tmp;
+ }
+ }
+
+ return NULL;
}
-EXPORT_SYMBOL(cfs_strncasecmp);
+EXPORT_SYMBOL(cfs_strrstr);
/* Convert a text string to a bitmask */
int cfs_str2mask(const char *str, const char *(*bit2str)(int bit),
debugstr = bit2str(i);
if (debugstr != NULL &&
strlen(debugstr) == len &&
- cfs_strncasecmp(str, debugstr, len) == 0) {
+ strncasecmp(str, debugstr, len) == 0) {
if (op == '-')
newmask &= ~(1 << i);
else
}
}
if (!found && len == 3 &&
- (cfs_strncasecmp(str, "ALL", len) == 0)) {
+ (strncasecmp(str, "ALL", len) == 0)) {
if (op == '-')
newmask = minmask;
else
{
char *endp;
- str = cfs_trimwhite(str);
*num = strtoul(str, &endp, 0);
if (endp == str)
return 0;
EXPORT_SYMBOL(cfs_range_expr_parse);
/**
+ * Print the range expression \a re into specified \a buffer.
+ * If \a bracketed is true, expression does not need additional
+ * brackets.
+ *
+ * \retval number of characters written
+ */
+static int
+cfs_range_expr_print(char *buffer, int count, struct cfs_range_expr *expr,
+ bool bracketed)
+{
+ int i;
+ char s[] = "[";
+ char e[] = "]";
+
+ if (bracketed)
+ s[0] = e[0] = '\0';
+
+ if (expr->re_lo == expr->re_hi)
+ i = cfs_snprintf(buffer, count, "%u", expr->re_lo);
+ else if (expr->re_stride == 1)
+ i = cfs_snprintf(buffer, count, "%s%u-%u%s",
+ s, expr->re_lo, expr->re_hi, e);
+ else
+ i = cfs_snprintf(buffer, count, "%s%u-%u/%u%s",
+ s, expr->re_lo, expr->re_hi,
+ expr->re_stride, e);
+ return i;
+}
+
+/**
+ * Print a list of range expressions (\a expr_list) into specified \a buffer.
+ * If the list contains several expressions, separate them with comma
+ * and surround the list with brackets.
+ *
+ * \retval number of characters written
+ */
+int
+cfs_expr_list_print(char *buffer, int count, struct cfs_expr_list *expr_list)
+{
+ struct cfs_range_expr *expr;
+ int i = 0, j = 0;
+ int numexprs = 0;
+
+ if (count <= 0)
+ return 0;
+
+ list_for_each_entry(expr, &expr_list->el_exprs, re_link)
+ numexprs++;
+
+ if (numexprs > 1)
+ i += cfs_snprintf(buffer + i, count - i, "[");
+
+ list_for_each_entry(expr, &expr_list->el_exprs, re_link) {
+ if (j++ != 0)
+ i += cfs_snprintf(buffer + i, count - i, ",");
+ i += cfs_range_expr_print(buffer + i, count - i, expr,
+ numexprs > 1);
+ }
+
+ if (numexprs > 1)
+ i += cfs_snprintf(buffer + i, count - i, "]");
+
+ return i;
+}
+EXPORT_SYMBOL(cfs_expr_list_print);
+
+/**
* Matches value (\a value) against ranges expression list \a expr_list.
*
* \retval 1 if \a value matches
}
EXPORT_SYMBOL(cfs_expr_list_free);
-void
-cfs_expr_list_print(struct cfs_expr_list *expr_list)
-{
- struct cfs_range_expr *expr;
-
- list_for_each_entry(expr, &expr_list->el_exprs, re_link) {
- CDEBUG(D_WARNING, "%d-%d/%d\n",
- expr->re_lo, expr->re_hi, expr->re_stride);
- }
-}
-EXPORT_SYMBOL(cfs_expr_list_print);
-
/**
* Parses \<cfs_expr_list\> token of the syntax.
*
- * \retval 1 if \a str parses to \<number\> | \<expr_list\>
- * \retval 0 otherwise
+ * \retval 0 if \a str parses to \<number\> | \<expr_list\>
+ * \retval -errno otherwise
*/
int
cfs_expr_list_parse(char *str, int len, unsigned min, unsigned max,