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-rw-r--r--storeio/dev.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/storeio/dev.h b/storeio/dev.h
index 139668a7..eda7a93d 100644
--- a/storeio/dev.h
+++ b/storeio/dev.h
@@ -115,7 +115,7 @@ error_t dev_sync (struct dev *dev, int wait);
/* Write LEN bytes from BUF to DEV, returning the amount actually written in
AMOUNT. If successful, 0 is returned, otherwise an error code is
returned. */
-error_t dev_write (struct dev *dev, off_t offs, void *buf, size_t len,
+error_t dev_write (struct dev *dev, off_t offs, const void *buf, size_t len,
size_t *amount);
/* Read up to AMOUNT bytes from DEV, returned in BUF and LEN in the with the