[hackers] [sbase] Check snprintf() return value || sin

[git]

commit 3ef662c988b01cb6be993f4cb0cd749a7e20105b
Author: sin <s...@2f30.org>
Date:   Thu Jan 23 20:05:01 2014 +0000

    Check snprintf() return value

diff --git a/du.c b/du.c
index 525ed9b..e250e0c 100644
--- a/du.c
+++ b/du.c
@@ -137,11 +137,13 @@ du(const char *path)
                m = nblks(&st);
                n += m;
                if (aflag && !sflag) {
-                       if (S_ISLNK(st.st_mode))
-                               snprintf(file, sizeof(file), "%s/%s",
-                                        cwd, dent->d_name);
-                       else
+                       if (S_ISLNK(st.st_mode)) {
+                               if (snprintf(file, sizeof(file), "%s/%s",
+                                            cwd, dent->d_name) >= sizeof(file))
+                                       enprintf(EXIT_FAILURE, "path too long
");
+                       } else {
                                realpath(dent->d_name, file);
+                       }
                        print(m, file);
                }
        }