mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 01:50:11 +00:00
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/* Lookup helper function for Hurd implementation of *at functions.
|
|
Copyright (C) 2006-2016 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 <hurd.h>
|
|
#include <hurd/lookup.h>
|
|
#include <hurd/fd.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
|
|
file_t
|
|
__file_name_lookup_at (int fd, int at_flags,
|
|
const char *file_name, int flags, mode_t mode)
|
|
{
|
|
error_t err;
|
|
file_t result;
|
|
|
|
if ((at_flags & AT_SYMLINK_FOLLOW) && (at_flags & AT_SYMLINK_NOFOLLOW))
|
|
return (__hurd_fail (EINVAL), MACH_PORT_NULL);
|
|
|
|
flags |= (at_flags & AT_SYMLINK_NOFOLLOW) ? O_NOLINK : 0;
|
|
at_flags &= ~AT_SYMLINK_NOFOLLOW;
|
|
if (at_flags & AT_SYMLINK_FOLLOW)
|
|
flags &= ~O_NOLINK;
|
|
at_flags &= ~AT_SYMLINK_FOLLOW;
|
|
if (at_flags != 0)
|
|
return (__hurd_fail (EINVAL), MACH_PORT_NULL);
|
|
|
|
if (fd == AT_FDCWD || file_name[0] == '/')
|
|
return __file_name_lookup (file_name, flags, mode);
|
|
|
|
file_t startdir;
|
|
error_t use_init_port (int which, error_t (*operate) (mach_port_t))
|
|
{
|
|
return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
|
|
_hurd_ports_use (which, operate));
|
|
}
|
|
|
|
err = HURD_DPORT_USE (fd, (startdir = port,
|
|
__hurd_file_name_lookup (&use_init_port,
|
|
&__getdport, NULL,
|
|
file_name,
|
|
flags,
|
|
mode & ~_hurd_umask,
|
|
&result)));
|
|
|
|
return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
|
|
}
|
|
|
|
file_t
|
|
__file_name_split_at (int fd, const char *file_name, char **name)
|
|
{
|
|
error_t err;
|
|
file_t result;
|
|
|
|
if (fd == AT_FDCWD || file_name[0] == '/')
|
|
return __file_name_split (file_name, name);
|
|
|
|
err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
|
|
file_name, &result, name);
|
|
|
|
file_t startdir;
|
|
error_t use_init_port (int which, error_t (*operate) (mach_port_t))
|
|
{
|
|
return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
|
|
_hurd_ports_use (which, operate));
|
|
}
|
|
|
|
err = HURD_DPORT_USE (fd, (startdir = port,
|
|
__hurd_file_name_split (&use_init_port,
|
|
&__getdport, 0,
|
|
file_name,
|
|
&result, name)));
|
|
|
|
return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
|
|
}
|
|
|
|
file_t
|
|
__directory_name_split_at (int fd, const char *directory_name, char **name)
|
|
{
|
|
error_t err;
|
|
file_t result;
|
|
|
|
if (fd == AT_FDCWD || directory_name[0] == '/')
|
|
return __directory_name_split (directory_name, name);
|
|
|
|
file_t startdir;
|
|
error_t use_init_port (int which, error_t (*operate) (mach_port_t))
|
|
{
|
|
return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
|
|
_hurd_ports_use (which, operate));
|
|
}
|
|
|
|
err = HURD_DPORT_USE (fd, (startdir = port,
|
|
__hurd_directory_name_split (&use_init_port,
|
|
&__getdport, 0,
|
|
directory_name,
|
|
&result, name)));
|
|
|
|
return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
|
|
}
|