1 files changed, 64 insertions, 0 deletions

diff --git a/util-linux/e2p/parse_num.c b/util-linux/e2p/parse_num.c
new file mode 100644
index 000000000..3910e70de
--- /dev/null
+++ b/util-linux/e2p/parse_num.c
@@ -0,0 +1,64 @@
+/*
+ * parse_num.c          - Parse the number of blocks 
+ *
+ * Copyright (C) 2004,2005  Theodore Ts'o <tytso@mit.edu>
+ * 
+ * This file can be redistributed under the terms of the GNU Library General
+ * Public License
+ */
+
+#include "e2p.h"
+
+#include <stdlib.h>
+
+unsigned long parse_num_blocks(const char *arg, int log_block_size)
+{
+        char *p;
+        unsigned long long num;
+
+        num = strtoull(arg, &p, 0);
+
+        if (p[0] && p[1]) 
+                return 0;
+
+        switch (*p) {           /* Using fall-through logic */
+        case 'T': case 't': 
+                num <<= 10;
+        case 'G': case 'g': 
+                num <<= 10;
+        case 'M': case 'm': 
+                num <<= 10;
+        case 'K': case 'k': 
+                num >>= log_block_size; 
+                break;
+        case 's': 
+                num >>= 1;
+                break;
+        case '\0':
+                break;
+        default: 
+                return 0;
+        }
+        return num;
+}
+
+#ifdef DEBUG
+#include <unistd.h>
+#include <stdio.h>
+
+main(int argc, char **argv)
+{
+        unsigned long num;
+        int log_block_size = 0;
+
+        if (argc != 2) {
+                fprintf(stderr, "Usage: %s arg\n", argv[0]);
+                exit(1);
+        }
+
+        num = parse_num_blocks(argv[1], log_block_size);
+
+        printf("Parsed number: %lu\n", num);
+        exit(0);
+}
+#endif