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sortix--sortix/libc/openat.cpp
Jonas 'Sortie' Termansen c9b3002e43 Add openat(2).
This is a rather hacky implementation.
2012-12-14 14:13:37 +01:00

42 lines
1.3 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
openat.cpp
Open a file relative to directory.
*******************************************************************************/
#include <sys/syscall.h>
#include <fcntl.h>
#include <stdarg.h>
DEFN_SYSCALL4(int, sys_openat, SYSCALL_OPENAT, int, const char*, int, mode_t);
extern "C" int openat(int dirfd, const char* path, int flags, ...)
{
mode_t mode = 0;
if ( flags & O_CREAT )
{
va_list ap;
va_start(ap, flags);
mode = va_arg(ap, mode_t);
va_end(ap);
}
return sys_openat(dirfd, path, flags, mode);
}