uss: Allocate buffer space for trailing NUL

Appease gcc8's -Wformat-truncation engine.

Reviewed-on: https://gerrit.openafs.org/13467
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Cheyenne Wills <cwills@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 9a5ba85d1853327d8184287e58a6e03fabaaf23d)

Change-Id: I9900452b951d600e6358b216015fe4fcdf8f633e
Reviewed-on: https://gerrit.openafs.org/13736
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>

diff --git a/src/uss/uss_procs.c b/src/uss/uss_procs.c
index 28fa784..d7d4ad8 100644 (file)
--- a/src/uss/uss_procs.c
+++ b/src/uss/uss_procs.c
@@ -664,7 +664,7 @@ uss_procs_PickADir(char *path, char *cp)
     int i, count, MinIndex = 0, mina = 10000;
     struct dirent *dp;
     DIR *dirp;
-    char dirname[300];
+    char dirname[301];
 
     if (uss_NumGroups == 0) {
        fprintf(stderr, "%s: No choice yet given to replace $AUTO\n",
@@ -698,7 +698,7 @@ uss_procs_PickADir(char *path, char *cp)
      * each and pick the minimum.
      */
     for (i = 0; i < uss_NumGroups; i++) {
-       sprintf(dirname, "%s/%s", cd, uss_DirPool[i]);
+       snprintf(dirname, sizeof(dirname), "%s/%s", cd, uss_DirPool[i]);
        if ((dirp = opendir(dirname)) == NULL) {
            if (errno != ENOTDIR)
                fprintf(stderr,