HOWTO: add missing [netsplice] for ioengine specific options
[fio.git] / oslib / strcasestr.c
1 #include <ctype.h>
2 #include <stddef.h>
3
4 #ifndef CONFIG_STRCASESTR
5
6 char *strcasestr(const char *s1, const char *s2)
7 {
8         const char *s = s1;
9         const char *p = s2;
10
11         do {
12                 if (!*p)
13                         return (char *) s1;
14                 if ((*p == *s) ||
15                     (tolower(*p) == tolower(*s))) {
16                         ++p;
17                         ++s;
18                 } else {
19                         p = s2;
20                         if (!*s)
21                                 return NULL;
22                         s = ++s1;
23                 }
24         } while (1);
25
26         return *p ? NULL : (char *) s1;
27 }
28
29 #endif