discover: Always add a NUL byte to config data

conf_get_pair will read one-byte past the end of the conf buffer, so
always NUL-terminate.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

diff --git a/discover/parser.c b/discover/parser.c
index 11728b779ce66f1af15900857e4d33168a1cc3a8..8d4c180c2c1bccc7a3a43f1da996c09f5b901f65 100644 (file)
--- a/discover/parser.c
+++ b/discover/parser.c
@@ -37,7 +37,7 @@ static int read_file(struct discover_context *ctx,
        if (len > max_file_size)
                goto err_close;
 
-       buf = talloc_array(ctx, char, len);
+       buf = talloc_array(ctx, char, len + 1);
        if (!buf)
                goto err_close;
 
@@ -55,6 +55,8 @@ static int read_file(struct discover_context *ctx,
 
        }
 
+       buf[len] = '\0';
+
        close(fd);
        *bufp = buf;
        *lenp = len;