diff options
Diffstat (limited to 'sysdeps/unix/getlogin_r.c')
| -rw-r--r-- | sysdeps/unix/getlogin_r.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sysdeps/unix/getlogin_r.c b/sysdeps/unix/getlogin_r.c index a78e554860..444df7e4d3 100644 --- a/sysdeps/unix/getlogin_r.c +++ b/sysdeps/unix/getlogin_r.c @@ -1,5 +1,5 @@ /* Reentrant function to return the current login name. Unix version. - Copyright (C) 1991-2016 Free Software Foundation, Inc. + Copyright (C) 1991-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -80,7 +80,7 @@ __getlogin_r (char *name, size_t name_len) if (result == 0) { - size_t needed = strlen (ut->ut_user) + 1; + size_t needed = __strnlen (ut->ut_user, UT_NAMESIZE) + 1; if (needed > name_len) { @@ -89,7 +89,8 @@ __getlogin_r (char *name, size_t name_len) } else { - memcpy (name, ut->ut_user, needed); + memcpy (name, ut->ut_user, needed - 1); + name[needed - 1] = 0; result = 0; } } |