sortix-mirror/libc/dirent/fdopendir.c

42 lines
1.4 KiB
C

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2014, 2015.
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/>.
dirent/fdopendir.c
Handles the file descriptor backend for the DIR* API on Sortix.
*******************************************************************************/
#include <dirent.h>
#include <DIR.h>
#include <fcntl.h>
#include <stdlib.h>
DIR* fdopendir(int fd)
{
int old_dflags = fcntl(fd, F_GETFD);
if ( 0 <= old_dflags && !(old_dflags & FD_CLOEXEC) )
fcntl(fd, F_SETFD, old_dflags | FD_CLOEXEC);
// TODO: Potentially reopen as O_EXEC when the kernel requires that.
DIR* dir = (DIR*) calloc(sizeof(DIR), 1);
if ( !dir )
return NULL;
dir->fd = fd;
return dir;
}