1999-03-03 00:31:05 +00:00
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/* Copyright (C) 1992, 93, 94, 95, 96, 97, 99 Free Software Foundation, Inc.
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1997-02-15 04:31:36 +00:00
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This file is part of the GNU C Library.
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1995-02-18 01:27:10 +00:00
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1997-02-15 04:31:36 +00:00
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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1995-02-18 01:27:10 +00:00
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1997-02-15 04:31:36 +00:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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1995-02-18 01:27:10 +00:00
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1997-02-15 04:31:36 +00:00
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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1995-02-18 01:27:10 +00:00
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#include <hurd.h>
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1995-10-16 02:51:06 +00:00
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#include <hurd/lookup.h>
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1995-02-18 01:27:10 +00:00
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#include <string.h>
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#include <limits.h>
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#include <fcntl.h>
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1995-10-18 05:47:53 +00:00
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#include "stdio-common/_itoa.h"
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1995-02-18 01:27:10 +00:00
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#include <hurd/term.h>
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1999-03-14 12:59:57 +00:00
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#include <hurd/paths.h>
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1995-02-18 01:27:10 +00:00
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/* Translate the error from dir_lookup into the error the user sees. */
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static inline error_t
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lookup_error (error_t error)
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{
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switch (error)
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{
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case EOPNOTSUPP:
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case MIG_BAD_ID:
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/* These indicate that the server does not understand dir_lookup
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at all. If it were a directory, it would, by definition. */
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return ENOTDIR;
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default:
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return error;
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}
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}
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error_t
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1995-10-16 02:51:06 +00:00
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__hurd_file_name_lookup (error_t (*use_init_port)
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(int which, error_t (*operate) (file_t)),
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file_t (*get_dtable_port) (int fd),
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1996-06-19 20:11:26 +00:00
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error_t (*lookup)
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(file_t dir, char *name, int flags, mode_t mode,
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retry_type *do_retry, string_t retry_name,
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mach_port_t *result),
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1995-02-18 01:27:10 +00:00
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const char *file_name, int flags, mode_t mode,
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file_t *result)
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{
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error_t err;
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enum retry_type doretry;
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char retryname[1024]; /* XXX string_t LOSES! */
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1999-03-03 00:31:05 +00:00
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int startport;
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1995-02-18 01:27:10 +00:00
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1996-06-19 20:11:26 +00:00
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error_t lookup_op (mach_port_t startdir)
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1995-10-16 02:51:06 +00:00
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{
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1996-06-19 20:11:26 +00:00
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return lookup_error ((*lookup) (startdir, file_name, flags, mode,
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&doretry, retryname, result));
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1995-10-16 02:51:06 +00:00
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}
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1995-02-18 01:27:10 +00:00
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1996-06-19 20:11:26 +00:00
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if (! lookup)
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lookup = __dir_lookup;
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1999-03-03 00:31:05 +00:00
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startport = (file_name[0] == '/') ? INIT_PORT_CRDIR : INIT_PORT_CWDIR;
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while (file_name[0] == '/')
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file_name++;
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if (flags & O_NOFOLLOW) /* See comments below about O_NOFOLLOW. */
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flags |= O_NOTRANS;
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if (flags & O_DIRECTORY)
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{
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/* The caller wants to require that the file we look up is a directory.
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We can do this without an extra RPC by appending a trailing slash
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to the file name we look up. */
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size_t len = strlen (file_name);
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if (len == 0)
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file_name = "/";
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else if (file_name[len - 1] != '/')
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{
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char *n = alloca (len + 2);
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memcpy (n, file_name, len);
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n[len] = '/';
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n[len + 1] = '\0';
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file_name = n;
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}
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}
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err = (*use_init_port) (startport, &lookup_op);
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1995-10-16 02:51:06 +00:00
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if (! err)
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1999-03-03 00:31:05 +00:00
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err = __hurd_file_name_lookup_retry (use_init_port, get_dtable_port,
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lookup, doretry, retryname,
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flags, mode, result);
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1995-02-18 01:27:10 +00:00
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1995-10-16 02:51:06 +00:00
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return err;
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1995-02-18 01:27:10 +00:00
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}
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weak_alias (__hurd_file_name_lookup, hurd_file_name_lookup)
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error_t
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1995-10-16 02:51:06 +00:00
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__hurd_file_name_lookup_retry (error_t (*use_init_port)
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(int which, error_t (*operate) (file_t)),
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file_t (*get_dtable_port) (int fd),
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1996-06-19 20:11:26 +00:00
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error_t (*lookup)
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1999-03-03 00:31:05 +00:00
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(file_t dir, char *name,
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int flags, mode_t mode,
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1996-06-19 20:11:26 +00:00
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retry_type *do_retry, string_t retry_name,
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mach_port_t *result),
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1995-02-18 01:27:10 +00:00
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enum retry_type doretry,
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char retryname[1024],
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int flags, mode_t mode,
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file_t *result)
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{
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error_t err;
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char *file_name;
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int nloops;
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1996-06-19 20:11:26 +00:00
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error_t lookup_op (file_t startdir)
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1995-10-16 02:51:06 +00:00
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{
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while (file_name[0] == '/')
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file_name++;
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1996-06-19 20:11:26 +00:00
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return lookup_error ((*lookup) (startdir, file_name, flags, mode,
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&doretry, retryname, result));
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1995-10-16 02:51:06 +00:00
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}
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error_t reauthenticate (file_t unauth)
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{
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error_t err;
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mach_port_t ref = __mach_reply_port ();
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error_t reauth (auth_t auth)
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{
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1996-05-04 09:46:57 +00:00
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return __auth_user_authenticate (auth, ref,
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1995-10-16 02:51:06 +00:00
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MACH_MSG_TYPE_MAKE_SEND,
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result);
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}
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err = __io_reauthenticate (unauth, ref, MACH_MSG_TYPE_MAKE_SEND);
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if (! err)
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err = (*use_init_port) (INIT_PORT_AUTH, &reauth);
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__mach_port_destroy (__mach_task_self (), ref);
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__mach_port_deallocate (__mach_task_self (), unauth);
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return err;
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}
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1996-06-19 20:11:26 +00:00
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if (! lookup)
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lookup = __dir_lookup;
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1995-02-18 01:27:10 +00:00
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nloops = 0;
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err = 0;
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1995-10-16 02:51:06 +00:00
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do
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1995-02-18 01:27:10 +00:00
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{
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1995-10-16 02:51:06 +00:00
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file_t startdir = MACH_PORT_NULL;
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int dirport = INIT_PORT_CWDIR;
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1995-02-18 01:27:10 +00:00
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switch (doretry)
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{
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case FS_RETRY_REAUTH:
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1995-10-16 02:51:06 +00:00
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if (err = reauthenticate (*result))
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1995-02-18 01:27:10 +00:00
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return err;
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/* Fall through. */
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case FS_RETRY_NORMAL:
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#ifdef SYMLOOP_MAX
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if (nloops++ >= SYMLOOP_MAX)
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return ELOOP;
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#endif
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/* An empty RETRYNAME indicates we have the final port. */
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1996-02-08 02:10:15 +00:00
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if (retryname[0] == '\0' &&
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/* If reauth'd, we must do one more retry on "" to give the new
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translator a chance to make a new port for us. */
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doretry == FS_RETRY_NORMAL)
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1995-02-18 01:27:10 +00:00
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{
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1999-03-03 00:31:05 +00:00
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if (flags & O_NOFOLLOW)
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{
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/* In Linux, O_NOFOLLOW means to reject symlinks. If we
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did an O_NOLINK lookup above and io_stat here to check
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for S_IFLNK, a translator like firmlink could easily
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spoof this check by not showing S_IFLNK, but in fact
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redirecting the lookup to some other name
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(i.e. opening the very same holes a symlink would).
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Instead we do an O_NOTRANS lookup above, and stat the
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underlying node: if it has a translator set, and its
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owner is not root (st_uid 0) then we reject it.
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Since the motivation for this feature is security, and
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that security presumes we trust the containing
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directory, this check approximates the security of
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refusing symlinks while accepting mount points.
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Note that we actually permit something Linux doesn't:
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we follow root-owned symlinks; if that is deemed
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undesireable, we can add a final check for that
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one exception to our general translator-based rule. */
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struct stat st;
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err = __io_stat (*result, &st);
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if (!err
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&& (st.st_mode & (S_IPTRANS|S_IATRANS)))
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1999-03-14 12:59:57 +00:00
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{
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if (st.st_uid != 0)
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err = ENOENT;
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else if (st.st_mode & S_IPTRANS)
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{
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char buf[1024];
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char *trans = buf;
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size_t translen = sizeof buf;
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err = __file_get_translator (*result,
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&trans, &translen);
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if (!err
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&& translen > sizeof _HURD_SYMLINK
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&& !memcmp (trans,
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_HURD_SYMLINK, sizeof _HURD_SYMLINK))
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err = ENOENT;
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}
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}
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1999-03-03 00:31:05 +00:00
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}
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1995-02-18 01:27:10 +00:00
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/* We got a successful translation. Now apply any open-time
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action flags we were passed. */
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1999-03-03 00:31:05 +00:00
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if (!err && (flags & O_TRUNC)) /* Asked to truncate the file. */
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1995-09-18 09:00:07 +00:00
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err = __file_set_size (*result, 0);
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1995-02-18 01:27:10 +00:00
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if (err)
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__mach_port_deallocate (__mach_task_self (), *result);
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return err;
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}
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startdir = *result;
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file_name = retryname;
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break;
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case FS_RETRY_MAGICAL:
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switch (retryname[0])
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{
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case '/':
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1995-10-16 02:51:06 +00:00
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dirport = INIT_PORT_CRDIR;
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1995-02-18 01:27:10 +00:00
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if (*result != MACH_PORT_NULL)
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__mach_port_deallocate (__mach_task_self (), *result);
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file_name = &retryname[1];
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break;
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case 'f':
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if (retryname[1] == 'd' && retryname[2] == '/')
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{
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int fd;
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char *end;
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int save = errno;
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errno = 0;
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1995-10-18 07:36:16 +00:00
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fd = (int) strtol (&retryname[3], &end, 10);
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1995-02-18 01:27:10 +00:00
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if (end == NULL || errno || /* Malformed number. */
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/* Check for excess text after the number. A slash
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is valid; it ends the component. Anything else
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does not name a numeric file descriptor. */
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(*end != '/' && *end != '\0'))
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{
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errno = save;
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return ENOENT;
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}
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1995-10-16 02:51:06 +00:00
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if (! get_dtable_port)
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err = EGRATUITOUS;
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else
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1995-02-18 01:27:10 +00:00
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{
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1995-10-16 02:51:06 +00:00
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*result = (*get_dtable_port) (fd);
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if (*result == MACH_PORT_NULL)
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{
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/* If the name was a proper number, but the file
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descriptor does not exist, we return EBADF instead
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of ENOENT. */
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err = errno;
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errno = save;
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}
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1995-02-18 01:27:10 +00:00
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}
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errno = save;
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1995-10-16 02:51:06 +00:00
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if (err)
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return err;
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1995-02-18 01:27:10 +00:00
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if (*end == '\0')
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return 0;
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else
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{
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/* Do a normal retry on the remaining components. */
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startdir = *result;
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|
|
file_name = end + 1; /* Skip the slash. */
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
goto bad_magic;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'm':
|
|
|
|
|
if (retryname[1] == 'a' && retryname[2] == 'c' &&
|
|
|
|
|
retryname[3] == 'h' && retryname[4] == 't' &&
|
|
|
|
|
retryname[5] == 'y' && retryname[6] == 'p' &&
|
|
|
|
|
retryname[7] == 'e')
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
|
|
|
|
struct host_basic_info hostinfo;
|
|
|
|
|
mach_msg_type_number_t hostinfocnt = HOST_BASIC_INFO_COUNT;
|
|
|
|
|
char *p;
|
1995-10-16 02:51:06 +00:00
|
|
|
|
/* XXX want client's host */
|
1995-02-18 01:27:10 +00:00
|
|
|
|
if (err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
|
|
|
|
|
(natural_t *) &hostinfo,
|
|
|
|
|
&hostinfocnt))
|
|
|
|
|
return err;
|
|
|
|
|
if (hostinfocnt != HOST_BASIC_INFO_COUNT)
|
|
|
|
|
return EGRATUITOUS;
|
|
|
|
|
p = _itoa (hostinfo.cpu_subtype, &retryname[8], 10, 0);
|
|
|
|
|
*--p = '/';
|
|
|
|
|
p = _itoa (hostinfo.cpu_type, &retryname[8], 10, 0);
|
|
|
|
|
if (p < retryname)
|
|
|
|
|
abort (); /* XXX write this right if this ever happens */
|
|
|
|
|
if (p > retryname)
|
|
|
|
|
strcpy (retryname, p);
|
|
|
|
|
startdir = *result;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
goto bad_magic;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 't':
|
|
|
|
|
if (retryname[1] == 't' && retryname[2] == 'y')
|
|
|
|
|
switch (retryname[3])
|
|
|
|
|
{
|
|
|
|
|
error_t opentty (file_t *result)
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
1995-10-16 02:51:06 +00:00
|
|
|
|
error_t ctty_open (file_t port)
|
1995-02-18 01:27:10 +00:00
|
|
|
|
{
|
Fri Dec 8 13:04:51 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* locale/error.c, locale/error.h: Files removed.
* locale/Makefile (distribute): Remove error.h.
(lib-modules): Remove error.
* hurd/hurdlookup.c (__hurd_file_name_lookup_retry): For "tty"
magic, return ENXIO if no ctty.
* sysdeps/mach/hurd/mmap.c: For MAP_FIXED, deallocate a previous
mapping if vm_map fails for that reason.
* posix/glob.c: Implement new options GLOB_ALTDIRFUNC, GLOB_BRACE,
GLOB_TILDE, GLOB_NOMAGIC.
(glob): Use stat instead of lstat to determine directoriness.
* posix/glob.h (GLOB_ALTDIRFUNC, GLOB_BRACE, GLOB_NOMAGIC, GLOB_TILDE):
New flag bits.
(__GLOB_FLAGS): Include them.
(glob_t): New members gl_closedir, gl_readdir, gl_opendir, gl_lstat,
gl_stat.
* elf/elf.h (ET_NUM, SHT_NUM, STB_NUM, STT_NUM, PT_NUM): New macros.
* sysdeps/unix/sysv/linux/sys/mman.h: Include <linux/mman.h> to
define all the bit values.
(MAP_*, MCL_*): Macros removed.
1995-12-09 10:00:22 +00:00
|
|
|
|
if (port == MACH_PORT_NULL)
|
|
|
|
|
return ENXIO; /* No controlling terminal. */
|
1995-10-16 02:51:06 +00:00
|
|
|
|
return __termctty_open_terminal (port,
|
|
|
|
|
flags,
|
|
|
|
|
result);
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
1995-10-16 02:51:06 +00:00
|
|
|
|
err = (*use_init_port) (INIT_PORT_CTTYID, &ctty_open);
|
|
|
|
|
if (! err)
|
|
|
|
|
err = reauthenticate (*result);
|
1995-02-18 01:27:10 +00:00
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
case '\0':
|
|
|
|
|
return opentty (result);
|
|
|
|
|
case '/':
|
|
|
|
|
if (err = opentty (&startdir))
|
|
|
|
|
return err;
|
|
|
|
|
strcpy (retryname, &retryname[4]);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
goto bad_magic;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
goto bad_magic;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
bad_magic:
|
|
|
|
|
return EGRATUITOUS;
|
|
|
|
|
}
|
Fri Dec 8 13:04:51 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* locale/error.c, locale/error.h: Files removed.
* locale/Makefile (distribute): Remove error.h.
(lib-modules): Remove error.
* hurd/hurdlookup.c (__hurd_file_name_lookup_retry): For "tty"
magic, return ENXIO if no ctty.
* sysdeps/mach/hurd/mmap.c: For MAP_FIXED, deallocate a previous
mapping if vm_map fails for that reason.
* posix/glob.c: Implement new options GLOB_ALTDIRFUNC, GLOB_BRACE,
GLOB_TILDE, GLOB_NOMAGIC.
(glob): Use stat instead of lstat to determine directoriness.
* posix/glob.h (GLOB_ALTDIRFUNC, GLOB_BRACE, GLOB_NOMAGIC, GLOB_TILDE):
New flag bits.
(__GLOB_FLAGS): Include them.
(glob_t): New members gl_closedir, gl_readdir, gl_opendir, gl_lstat,
gl_stat.
* elf/elf.h (ET_NUM, SHT_NUM, STB_NUM, STT_NUM, PT_NUM): New macros.
* sysdeps/unix/sysv/linux/sys/mman.h: Include <linux/mman.h> to
define all the bit values.
(MAP_*, MCL_*): Macros removed.
1995-12-09 10:00:22 +00:00
|
|
|
|
break;
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
return EGRATUITOUS;
|
|
|
|
|
}
|
|
|
|
|
|
1995-10-16 02:51:06 +00:00
|
|
|
|
if (startdir != MACH_PORT_NULL)
|
|
|
|
|
{
|
1996-06-19 20:11:26 +00:00
|
|
|
|
err = lookup_op (startdir);
|
1995-10-16 02:51:06 +00:00
|
|
|
|
__mach_port_deallocate (__mach_task_self (), startdir);
|
|
|
|
|
startdir = MACH_PORT_NULL;
|
|
|
|
|
}
|
|
|
|
|
else
|
1996-06-19 20:11:26 +00:00
|
|
|
|
err = (*use_init_port) (dirport, &lookup_op);
|
1995-10-16 02:51:06 +00:00
|
|
|
|
} while (! err);
|
|
|
|
|
|
|
|
|
|
return err;
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
|
|
|
|
weak_alias (__hurd_file_name_lookup_retry, hurd_file_name_lookup_retry)
|
|
|
|
|
|
|
|
|
|
error_t
|
1995-10-16 02:51:06 +00:00
|
|
|
|
__hurd_file_name_split (error_t (*use_init_port)
|
|
|
|
|
(int which, error_t (*operate) (file_t)),
|
|
|
|
|
file_t (*get_dtable_port) (int fd),
|
1996-06-19 20:11:26 +00:00
|
|
|
|
error_t (*lookup)
|
|
|
|
|
(file_t dir, char *name, int flags, mode_t mode,
|
|
|
|
|
retry_type *do_retry, string_t retry_name,
|
|
|
|
|
mach_port_t *result),
|
1995-02-18 01:27:10 +00:00
|
|
|
|
const char *file_name,
|
|
|
|
|
file_t *dir, char **name)
|
|
|
|
|
{
|
1995-10-16 02:51:06 +00:00
|
|
|
|
error_t addref (file_t crdir)
|
|
|
|
|
{
|
|
|
|
|
*dir = crdir;
|
Fri Dec 8 13:04:51 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* locale/error.c, locale/error.h: Files removed.
* locale/Makefile (distribute): Remove error.h.
(lib-modules): Remove error.
* hurd/hurdlookup.c (__hurd_file_name_lookup_retry): For "tty"
magic, return ENXIO if no ctty.
* sysdeps/mach/hurd/mmap.c: For MAP_FIXED, deallocate a previous
mapping if vm_map fails for that reason.
* posix/glob.c: Implement new options GLOB_ALTDIRFUNC, GLOB_BRACE,
GLOB_TILDE, GLOB_NOMAGIC.
(glob): Use stat instead of lstat to determine directoriness.
* posix/glob.h (GLOB_ALTDIRFUNC, GLOB_BRACE, GLOB_NOMAGIC, GLOB_TILDE):
New flag bits.
(__GLOB_FLAGS): Include them.
(glob_t): New members gl_closedir, gl_readdir, gl_opendir, gl_lstat,
gl_stat.
* elf/elf.h (ET_NUM, SHT_NUM, STB_NUM, STT_NUM, PT_NUM): New macros.
* sysdeps/unix/sysv/linux/sys/mman.h: Include <linux/mman.h> to
define all the bit values.
(MAP_*, MCL_*): Macros removed.
1995-12-09 10:00:22 +00:00
|
|
|
|
return __mach_port_mod_refs (__mach_task_self (),
|
1995-10-16 02:51:06 +00:00
|
|
|
|
crdir, MACH_PORT_RIGHT_SEND, +1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const char *lastslash = strrchr (file_name, '/');
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
|
|
|
|
if (lastslash != NULL)
|
|
|
|
|
{
|
|
|
|
|
if (lastslash == file_name)
|
|
|
|
|
{
|
|
|
|
|
/* "/foobar" => crdir + "foobar". */
|
|
|
|
|
*name = (char *) file_name + 1;
|
1995-10-16 02:51:06 +00:00
|
|
|
|
return (*use_init_port) (INIT_PORT_CRDIR, &addref);
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* "/dir1/dir2/.../file". */
|
|
|
|
|
char dirname[lastslash - file_name + 1];
|
|
|
|
|
memcpy (dirname, file_name, lastslash - file_name);
|
|
|
|
|
dirname[lastslash - file_name] = '\0';
|
|
|
|
|
*name = (char *) lastslash + 1;
|
1996-06-19 20:11:26 +00:00
|
|
|
|
return
|
|
|
|
|
__hurd_file_name_lookup (use_init_port, get_dtable_port, lookup,
|
|
|
|
|
dirname, 0, 0, dir);
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* "foobar" => cwdir + "foobar". */
|
|
|
|
|
*name = (char *) file_name;
|
1995-10-16 02:51:06 +00:00
|
|
|
|
return (*use_init_port) (INIT_PORT_CWDIR, &addref);
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
weak_alias (__hurd_file_name_split, hurd_file_name_split)
|
|
|
|
|
|
1999-11-13 23:52:38 +00:00
|
|
|
|
/* This is the same as hurd_file_name_split, except that it ignores
|
|
|
|
|
trailing slashes (so *NAME is never ""). */
|
|
|
|
|
error_t
|
|
|
|
|
__hurd_directory_name_split (error_t (*use_init_port)
|
|
|
|
|
(int which, error_t (*operate) (file_t)),
|
|
|
|
|
file_t (*get_dtable_port) (int fd),
|
|
|
|
|
error_t (*lookup)
|
|
|
|
|
(file_t dir, char *name, int flags, mode_t mode,
|
|
|
|
|
retry_type *do_retry, string_t retry_name,
|
|
|
|
|
mach_port_t *result),
|
|
|
|
|
const char *file_name,
|
|
|
|
|
file_t *dir, char **name)
|
|
|
|
|
{
|
|
|
|
|
error_t addref (file_t crdir)
|
|
|
|
|
{
|
|
|
|
|
*dir = crdir;
|
|
|
|
|
return __mach_port_mod_refs (__mach_task_self (),
|
|
|
|
|
crdir, MACH_PORT_RIGHT_SEND, +1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const char *lastslash = strrchr (file_name, '/');
|
|
|
|
|
|
|
|
|
|
if (lastslash != NULL && lastslash[1] == '\0')
|
|
|
|
|
{
|
|
|
|
|
/* Trailing slash doesn't count. Look back further. */
|
|
|
|
|
|
|
|
|
|
/* Back up over all trailing slashes. */
|
|
|
|
|
while (lastslash > file_name && *lastslash == '/')
|
|
|
|
|
--lastslash;
|
|
|
|
|
|
|
|
|
|
/* Find the last one earlier in the string, before the trailing ones. */
|
|
|
|
|
#if __GLIBC__ > 2 || __GLIBC_MINOR__ >= 2
|
|
|
|
|
lastslash = __memrchr (file_name, '/', lastslash - file_name);
|
|
|
|
|
#else
|
|
|
|
|
/* Keep backing up, looking for a slash. */
|
|
|
|
|
do
|
|
|
|
|
if (lastslash == file_name)
|
|
|
|
|
{
|
|
|
|
|
/* Hit the start with no slash. */
|
|
|
|
|
lastslash = NULL;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
while (*lastslash-- != '/');
|
|
|
|
|
#endif
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (lastslash != NULL)
|
|
|
|
|
{
|
|
|
|
|
if (lastslash == file_name)
|
|
|
|
|
{
|
|
|
|
|
/* "/foobar" => crdir + "foobar". */
|
|
|
|
|
*name = (char *) file_name + 1;
|
|
|
|
|
return (*use_init_port) (INIT_PORT_CRDIR, &addref);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* "/dir1/dir2/.../file". */
|
|
|
|
|
char dirname[lastslash - file_name + 1];
|
|
|
|
|
memcpy (dirname, file_name, lastslash - file_name);
|
|
|
|
|
dirname[lastslash - file_name] = '\0';
|
|
|
|
|
*name = (char *) lastslash + 1;
|
|
|
|
|
return
|
|
|
|
|
__hurd_file_name_lookup (use_init_port, get_dtable_port, lookup,
|
|
|
|
|
dirname, 0, 0, dir);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* "foobar" => cwdir + "foobar". */
|
|
|
|
|
*name = (char *) file_name;
|
|
|
|
|
return (*use_init_port) (INIT_PORT_CWDIR, &addref);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
weak_alias (__hurd_directory_name_split, hurd_directory_name_split)
|
|
|
|
|
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
|
|
|
|
file_t
|
|
|
|
|
__file_name_lookup (const char *file_name, int flags, mode_t mode)
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
1995-10-16 02:51:06 +00:00
|
|
|
|
file_t result;
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
1996-06-19 20:11:26 +00:00
|
|
|
|
err = __hurd_file_name_lookup (&_hurd_ports_use, &__getdport, 0,
|
1996-01-28 22:47:31 +00:00
|
|
|
|
file_name, flags, mode & ~_hurd_umask,
|
1995-02-18 01:27:10 +00:00
|
|
|
|
&result);
|
|
|
|
|
|
1995-10-16 02:51:06 +00:00
|
|
|
|
return err ? (__hurd_fail (err), MACH_PORT_NULL) : result;
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
|
|
|
|
weak_alias (__file_name_lookup, file_name_lookup)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
file_t
|
|
|
|
|
__file_name_split (const char *file_name, char **name)
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
1995-10-16 02:51:06 +00:00
|
|
|
|
file_t result;
|
|
|
|
|
|
1996-06-19 20:11:26 +00:00
|
|
|
|
err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
|
1995-10-16 02:51:06 +00:00
|
|
|
|
file_name, &result, name);
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
1995-10-16 02:51:06 +00:00
|
|
|
|
return err ? (__hurd_fail (err), MACH_PORT_NULL) : result;
|
|
|
|
|
}
|
|
|
|
|
weak_alias (__file_name_split, file_name_split)
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
1999-11-13 23:52:38 +00:00
|
|
|
|
file_t
|
|
|
|
|
__directory_name_split (const char *directory_name, char **name)
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
|
|
|
|
file_t result;
|
|
|
|
|
|
|
|
|
|
err = __hurd_directory_name_split (&_hurd_ports_use, &__getdport, 0,
|
|
|
|
|
directory_name, &result, name);
|
|
|
|
|
|
|
|
|
|
return err ? (__hurd_fail (err), MACH_PORT_NULL) : result;
|
|
|
|
|
}
|
|
|
|
|
weak_alias (__directory_name_split, directory_name_split)
|
|
|
|
|
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
1995-10-16 02:51:06 +00:00
|
|
|
|
file_t
|
|
|
|
|
__file_name_lookup_under (file_t startdir,
|
|
|
|
|
const char *file_name, int flags, mode_t mode)
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
|
|
|
|
file_t result;
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
1995-10-16 02:51:06 +00:00
|
|
|
|
error_t use_init_port (int which, error_t (*operate) (mach_port_t))
|
1995-02-18 01:27:10 +00:00
|
|
|
|
{
|
1995-10-16 02:51:06 +00:00
|
|
|
|
return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
|
|
|
|
|
_hurd_ports_use (which, operate));
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
1995-10-16 02:51:06 +00:00
|
|
|
|
|
1996-06-19 20:11:26 +00:00
|
|
|
|
err = __hurd_file_name_lookup (&use_init_port, &__getdport, 0,
|
1996-01-28 22:47:31 +00:00
|
|
|
|
file_name, flags, mode & ~_hurd_umask,
|
1995-10-16 02:51:06 +00:00
|
|
|
|
&result);
|
|
|
|
|
|
|
|
|
|
return err ? (__hurd_fail (err), MACH_PORT_NULL) : result;
|
1995-02-18 01:27:10 +00:00
|
|
|
|
}
|
1995-10-16 02:51:06 +00:00
|
|
|
|
weak_alias (__file_name_lookup_under, file_name_lookup_under)
|