/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
memcpy(&size, xb, sizeof(int));
while (size > 0 && (size < xb_size) && (pos + size < xb_size)) {
- if (strncmp
- ((YCHAR *) (xb + pos + sizeof(int)), name, size) == 0) {
+ if (!strncmp((YCHAR *) (xb + pos + sizeof(int)), name, size)) {
if (exist_size)
*exist_size = size;
return pos;
}
if (exist_size)
*exist_size = 0;
- return -1;
+ return -ENODATA;
}
static int nval_used(const char *xb, int xb_size)
int pos = nval_find(xb, xb_size, name, NULL);
int size;
- if (pos >= 0 && pos < xb_size) {
- /* Find size, shift rest over this record,
- * then zero out the rest of buffer */
- memcpy(&size, xb + pos, sizeof(int));
- memcpy(xb + pos, xb + pos + size, xb_size - (pos + size));
- memset(xb + (xb_size - size), 0, size);
- return 0;
- } else {
+ if (pos < 0 || pos >= xb_size)
return -ENODATA;
- }
+
+ /* Find size, shift rest over this record,
+ * then zero out the rest of buffer */
+ memcpy(&size, xb + pos, sizeof(int));
+ memcpy(xb + pos, xb + pos + size, xb_size - (pos + size));
+ memset(xb + (xb_size - size), 0, size);
+ return 0;
}
int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf,
pos++;
size--;
+ /* If bsize is zero then this is a size query.
+ * Return the size, but don't copy.
+ */
+ if (!bsize)
+ return size;
+
if (size <= bsize) {
memcpy(buf, xb + pos, size);
return size;
}
-
}
if (pos >= 0)
return -ERANGE;
- else
- return -ENODATA;
+
+ return -ENODATA;
}
int nval_list(const char *xb, int xb_size, char *buf, int bsize)