diff options
Diffstat (limited to 'REORG.TODO/hurd/hurdfchdir.c')
-rw-r--r-- | REORG.TODO/hurd/hurdfchdir.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/REORG.TODO/hurd/hurdfchdir.c b/REORG.TODO/hurd/hurdfchdir.c new file mode 100644 index 0000000000..97c758b67f --- /dev/null +++ b/REORG.TODO/hurd/hurdfchdir.c @@ -0,0 +1,58 @@ +/* Change a port cell to a directory in an open file descriptor. + Copyright (C) 1999-2017 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU 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 GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <unistd.h> +#include <hurd.h> +#include <hurd/port.h> +#include <hurd/fd.h> +#include <fcntl.h> + +int +_hurd_change_directory_port_from_fd (struct hurd_port *portcell, int fd) +{ + int ret; + struct hurd_fd *d = _hurd_fd_get (fd); + + if (!d) + return __hurd_fail (EBADF); + + HURD_CRITICAL_BEGIN; + + ret = HURD_PORT_USE (&d->port, + ({ + int ret; + /* We look up "." to force ENOTDIR if it's not a + directory and EACCES if we don't have search + permission. */ + file_t dir = __file_name_lookup_under (port, ".", + O_NOTRANS, 0); + if (dir == MACH_PORT_NULL) + ret = -1; + else + { + _hurd_port_set (portcell, dir); + ret = 0; + } + ret; + })); + + HURD_CRITICAL_END; + + return ret; +} |