mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-30 14:31:14 +00:00
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* Change a port cell to a directory by looking up a name.
|
|
Copyright (C) 1999-2020 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <hurd.h>
|
|
#include <hurd/port.h>
|
|
#include <hurd/fd.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
|
|
int
|
|
_hurd_change_directory_port_from_name (struct hurd_port *portcell,
|
|
const char *name)
|
|
{
|
|
size_t len;
|
|
const char *lookup;
|
|
file_t dir;
|
|
|
|
/* Append trailing "/." to directory name to force ENOTDIR if it's not a
|
|
directory and EACCES if we don't have search permission. */
|
|
len = strlen (name);
|
|
if (len >= 2 && name[len - 2] == '/' && name[len - 1] == '.')
|
|
lookup = name;
|
|
else if (len == 0)
|
|
/* Special-case empty file name according to POSIX. */
|
|
return __hurd_fail (ENOENT);
|
|
else
|
|
{
|
|
char *n = alloca (len + 3);
|
|
memcpy (n, name, len);
|
|
n[len] = '/';
|
|
n[len + 1] = '.';
|
|
n[len + 2] = '\0';
|
|
lookup = n;
|
|
}
|
|
|
|
dir = __file_name_lookup (lookup, 0, 0);
|
|
if (dir == MACH_PORT_NULL)
|
|
return -1;
|
|
|
|
_hurd_port_set (portcell, dir);
|
|
return 0;
|
|
}
|