find: cater for libc w/o FNM_CASEFOLD

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 33 insertions, 1 deletions

diff --git a/findutils/find.c b/findutils/find.c
index 7918240f4..050d6373e 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -330,7 +330,11 @@
 #include <fnmatch.h>
 #include "libbb.h"
 #if ENABLE_FEATURE_FIND_REGEX
-#include "xregex.h"
+# include "xregex.h"
+#endif
+/* GNUism: */
+#ifndef FNM_CASEFOLD
+# define FNM_CASEFOLD 0
 #endif
 
 /* This is a NOEXEC applet. Be very careful! */
@@ -474,6 +478,22 @@ static int exec_actions(action ***appp, const char *fileName, const struct stat
 }
 
 
+#if !FNM_CASEFOLD
+static char *strcpy_upcase(char *dst, const char *src)
+{
+        char *d = dst;
+        while (1) {
+                unsigned char ch = *src++;
+                if (ch >= 'a' && ch <= 'z')
+                        ch -= ('a' - 'A');
+                *d++ = ch;
+                if (ch == '\0')
+                        break;
+        }
+        return dst;
+}
+#endif
+
 ACTF(name)
 {
         const char *tmp = bb_basename(fileName);
@@ -489,13 +509,25 @@ ACTF(name)
          * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
          * find -name '*foo' should match .foo too:
          */
+#if FNM_CASEFOLD
         return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0;
+#else
+        if (ap->iname)
+                tmp = strcpy_upcase(alloca(strlen(tmp) + 1), tmp);
+        return fnmatch(ap->pattern, tmp, 0) == 0;
+#endif
 }
 
 #if ENABLE_FEATURE_FIND_PATH
 ACTF(path)
 {
+# if FNM_CASEFOLD
         return fnmatch(ap->pattern, fileName, (ap->ipath ? FNM_CASEFOLD : 0)) == 0;
+# else
+        if (ap->ipath)
+                fileName = strcpy_upcase(alloca(strlen(fileName) + 1), fileName);
+        return fnmatch(ap->pattern, fileName, 0) == 0;
+# endif
 }
 #endif
 #if ENABLE_FEATURE_FIND_REGEX