1 files changed, 70 insertions, 0 deletions

diff --git a/util-linux/e2p/hashstr.c b/util-linux/e2p/hashstr.c
new file mode 100644
index 000000000..b257eb26c
--- /dev/null
+++ b/util-linux/e2p/hashstr.c
@@ -0,0 +1,70 @@
+/*
+ * feature.c --- convert between features and strings
+ * 
+ * Copyright (C) 1999  Theodore Ts'o <tytso@mit.edu>
+ * 
+ * This file can be redistributed under the terms of the GNU Library General
+ * Public License
+ * 
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "e2p.h"
+
+struct hash {
+        int             num;
+        const char      *string;
+};
+
+static struct hash hash_list[] = {
+        {       EXT2_HASH_LEGACY,       "legacy" },
+        {       EXT2_HASH_HALF_MD4,     "half_md4" },
+        {       EXT2_HASH_TEA,          "tea" },
+        {       0, 0 },
+};
+
+const char *e2p_hash2string(int num)
+{
+        struct hash  *p;
+        static char buf[20];
+
+        for (p = hash_list; p->string; p++) {
+                if (num == p->num)
+                        return p->string;
+        }
+        sprintf(buf, "HASHALG_%d", num);
+        return buf;
+}
+
+/*
+ * Returns the hash algorithm, or -1 on error
+ */
+int e2p_string2hash(char *string)
+{
+        struct hash     *p;
+        char            *eptr;
+        int             num;
+
+        for (p = hash_list; p->string; p++) {
+                if (!strcasecmp(string, p->string)) {
+                        return p->num;
+                }
+        }
+        if (strncasecmp(string, "HASHALG_", 8))
+                return -1;
+
+        if (string[8] == 0)
+                return -1;
+        num = strtol(string+8, &eptr, 10);
+        if (num > 255 || num < 0)
+                return -1;
+        if (*eptr)
+                return -1;
+        return num;
+}
+