s3-printing: fix format-truncation in print_queue_update()

../source3/printing/printing.c: In function ‘print_queue_update’:
../source3/printing/printing.c:1809:42: error: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size 244 [-Werror=format-truncation=]
  snprintf(key, sizeof(key), "MSG_PENDING/%s", sharename);
                                          ^~   ~~~~~~~~~
../source3/printing/printing.c:1809:2: note: ‘snprintf’ output between 13 and 268 bytes into a destination of size 256
  snprintf(key, sizeof(key), "MSG_PENDING/%s", sharename);

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13437

Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
(cherry picked from commit 6326b3415f3e225aafd5912d0965c80abcd7b22c)

diff --git a/source3/printing/printing.c b/source3/printing/printing.c
index e4bb1d84f69fca2b918d5433b422ddb5e1b84960..38d718045a156410ae4ccdcea79134c257cc0967 100644 (file)
--- a/source3/printing/printing.c
+++ b/source3/printing/printing.c
@@ -1693,7 +1693,7 @@ extern pid_t background_lpq_updater_pid;
 static void print_queue_update(struct messaging_context *msg_ctx,
                               int snum, bool force)
 {
-       fstring key;
+       char key[268];
        fstring sharename;
        char *lpqcommand = NULL;
        char *lprmcommand = NULL;