write: fix path for freopen()

Reported-by: xinglp <xinglp@gmail.com>
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/term-utils/write.c b/term-utils/write.c
index a825f624762839bf4778f180740cac6d500a6908..a70eb7bd1d362c5e785f1e6383c2c92bcb812812 100644 (file)
--- a/term-utils/write.c
+++ b/term-utils/write.c
@@ -322,7 +322,7 @@ void do_write(char *tty, char *mytty, uid_t myuid)
 
        if (strlen(tty) + 6 > sizeof(path))
                errx(EXIT_FAILURE, _("tty path %s too long"), tty);
-       printf(path, "/dev/%s", tty);
+       snprintf(path, sizeof(path), "/dev/%s", tty);
        if ((freopen(path, "w", stdout)) == NULL)
                err(EXIT_FAILURE, "%s", path);