EXPORT_SYMBOL(strnicmp);
#endif
+#ifndef __HAVE_ARCH_STRCASECMP
+int strcasecmp(const char *s1, const char *s2)
+{
+ int c1, c2;
+
+ do {
+ c1 = tolower(*s1++);
+ c2 = tolower(*s2++);
+ } while (c1 == c2 && c1 != 0);
+ return c1 - c2;
+}
+EXPORT_SYMBOL(strcasecmp);
+#endif
+
+#ifndef __HAVE_ARCH_STRNCASECMP
+int strncasecmp(const char *s1, const char *s2, size_t n)
+{
+ int c1, c2;
+
+ do {
+ c1 = tolower(*s1++);
+ c2 = tolower(*s2++);
+ } while ((--n > 0) && c1 == c2 && c1 != 0);
+ return c1 - c2;
+}
+EXPORT_SYMBOL(strncasecmp);
+#endif
+
#ifndef __HAVE_ARCH_STRCPY
/**
* strcpy - Copy a %NUL terminated string
* @src: The string to append to it
* @count: The maximum numbers of bytes to copy
*
- * Note that in contrast to strncpy, strncat ensures the result is
+ * Note that in contrast to strncpy(), strncat() ensures the result is
* terminated.
*/
char *strncat(char *dest, const char *src, size_t count)
return s;
end = s + size - 1;
- while (end != s && isspace(*end))
+ while (end >= s && isspace(*end))
end--;
*(end + 1) = '\0';
#ifndef __HAVE_ARCH_STRSPN
/**
- * strspn - Calculate the length of the initial substring of @s which only
- * contain letters in @accept
+ * strspn - Calculate the length of the initial substring of @s which only contain letters in @accept
* @s: The string to be searched
* @accept: The string to search for
*/
#ifndef __HAVE_ARCH_STRCSPN
/**
- * strcspn - Calculate the length of the initial substring of @s which does
- * not contain letters in @reject
+ * strcspn - Calculate the length of the initial substring of @s which does not contain letters in @reject
* @s: The string to be searched
* @reject: The string to avoid
*/
EXPORT_SYMBOL(strsep);
#endif
+/**
+ * sysfs_streq - return true if strings are equal, modulo trailing newline
+ * @s1: one string
+ * @s2: another string
+ *
+ * This routine returns true iff two strings are equal, treating both
+ * NUL and newline-then-NUL as equivalent string terminations. It's
+ * geared for use with sysfs input strings, which generally terminate
+ * with newlines but are compared against values without newlines.
+ */
+bool sysfs_streq(const char *s1, const char *s2)
+{
+ while (*s1 && *s1 == *s2) {
+ s1++;
+ s2++;
+ }
+
+ if (*s1 == *s2)
+ return true;
+ if (!*s1 && *s2 == '\n' && !s2[1])
+ return true;
+ if (*s1 == '\n' && !s1[1] && !*s2)
+ return true;
+ return false;
+}
+EXPORT_SYMBOL(sysfs_streq);
+
#ifndef __HAVE_ARCH_MEMSET
/**
* memset - Fill a region of memory with the given value