1*cf28ed85SJohn Marino /* Invoke openat, but avoid some glitches. 2*cf28ed85SJohn Marino 3*cf28ed85SJohn Marino Copyright (C) 2005-2006, 2008-2012 Free Software Foundation, Inc. 4*cf28ed85SJohn Marino 5*cf28ed85SJohn Marino This program is free software: you can redistribute it and/or modify 6*cf28ed85SJohn Marino it under the terms of the GNU General Public License as published by 7*cf28ed85SJohn Marino the Free Software Foundation; either version 3 of the License, or 8*cf28ed85SJohn Marino (at your option) any later version. 9*cf28ed85SJohn Marino 10*cf28ed85SJohn Marino This program is distributed in the hope that it will be useful, 11*cf28ed85SJohn Marino but WITHOUT ANY WARRANTY; without even the implied warranty of 12*cf28ed85SJohn Marino MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13*cf28ed85SJohn Marino GNU General Public License for more details. 14*cf28ed85SJohn Marino 15*cf28ed85SJohn Marino You should have received a copy of the GNU General Public License 16*cf28ed85SJohn Marino along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17*cf28ed85SJohn Marino 18*cf28ed85SJohn Marino /* Written by Paul Eggert for open, ported by Eric Blake for openat. */ 19*cf28ed85SJohn Marino 20*cf28ed85SJohn Marino #include <config.h> 21*cf28ed85SJohn Marino 22*cf28ed85SJohn Marino #include "fcntl-safer.h" 23*cf28ed85SJohn Marino 24*cf28ed85SJohn Marino #include <fcntl.h> 25*cf28ed85SJohn Marino #include <stdarg.h> 26*cf28ed85SJohn Marino #include "unistd-safer.h" 27*cf28ed85SJohn Marino 28*cf28ed85SJohn Marino int 29*cf28ed85SJohn Marino openat_safer (int fd, char const *file, int flags, ...) 30*cf28ed85SJohn Marino { 31*cf28ed85SJohn Marino mode_t mode = 0; 32*cf28ed85SJohn Marino 33*cf28ed85SJohn Marino if (flags & O_CREAT) 34*cf28ed85SJohn Marino { 35*cf28ed85SJohn Marino va_list ap; 36*cf28ed85SJohn Marino va_start (ap, flags); 37*cf28ed85SJohn Marino 38*cf28ed85SJohn Marino /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4 39*cf28ed85SJohn Marino creates crashing code when 'mode_t' is smaller than 'int'. */ 40*cf28ed85SJohn Marino mode = va_arg (ap, PROMOTED_MODE_T); 41*cf28ed85SJohn Marino 42*cf28ed85SJohn Marino va_end (ap); 43*cf28ed85SJohn Marino } 44*cf28ed85SJohn Marino 45*cf28ed85SJohn Marino return fd_safer (openat (fd, file, flags, mode)); 46*cf28ed85SJohn Marino } 47