LU-4047 build: fix 'memory' errors

[fs/lustre-release.git] / lustre / utils / lhsmtool_posix.c

diff --git a/lustre/utils/lhsmtool_posix.c b/lustre/utils/lhsmtool_posix.c
index c283e63..0709264 100644 (file)
--- a/lustre/utils/lhsmtool_posix.c
+++ b/lustre/utils/lhsmtool_posix.c
@@ -934,7 +934,7 @@ static int ct_archive(const struct hsm_action_item *hai, const long hal_flags)
                int              linkno = 0;
                char            *ptr;
                int              depth = 0;
-               int              sz;
+               ssize_t          sz;
 
                sprintf(buf, DFID, PFID(&hai->hai_fid));
                sprintf(src, "%s/shadow/", opt.o_hsm_root);
@@ -968,6 +968,12 @@ static int ct_archive(const struct hsm_action_item *hai, const long hal_flags)
                }
                /* symlink already exists ? */
                sz = readlink(src, buf, sizeof(buf));
+               /* detect truncation */
+               if (sz == sizeof(buf)) {
+                       rcf = rcf ? rcf : -E2BIG;
+                       CT_ERROR(rcf, "readlink '%s' truncated", src);
+                       goto fini_minor;
+               }
                if (sz >= 0) {
                        buf[sz] = '\0';
                        if (sz == 0 || strncmp(buf, dst, sz) != 0) {