Fix off by one bug when more data is read than buflen hyperic#88

lizhanyin · Aug 28, 2024 · b156eaf · b156eaf
1 parent aff170e
commit b156eaf
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/sigar_util.c b/src/sigar_util.c
@@ -838,7 +838,7 @@ int sigar_file2str(const char *fname, char *buffer, int buflen)
         return ENOENT;
     }
 
-    if ((len = read(fd, buffer, buflen)) < 0) {
+    if ((len = read(fd, buffer, buflen - 1)) < 0) {
         status = errno;
     }
     else {