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aa9109070f
* Makefile (subdirs): Add sysvipc. * stdlib/srand48_r.c (srand48_r): Use UL suffix for huge constant. * stdlib/drand48-iter.c (__drand48_iterate): Likewise. * hurd/hurdlookup.c (__hurd_file_name_lookup_retry): Call __file_set_size instead of __file_truncate. * features.h (__USE_REENTRANT): New macro.
382 lines
9.5 KiB
C
382 lines
9.5 KiB
C
/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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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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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
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <hurd.h>
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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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#include "stdio/_itoa.h"
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#include <hurd/term.h>
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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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__hurd_file_name_lookup (file_t crdir, file_t cwdir,
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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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file_t startdir;
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startdir = file_name[0] == '/' ? crdir : cwdir;
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while (file_name[0] == '/')
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file_name++;
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if (err = __dir_lookup (startdir, file_name, flags, mode,
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&doretry, retryname, result))
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return lookup_error (err);
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return __hurd_file_name_lookup_retry (crdir, doretry, retryname, flags, mode,
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result);
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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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__hurd_file_name_lookup_retry (file_t crdir,
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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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file_t startdir;
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file_t newpt;
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char *file_name;
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int dealloc_dir;
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int nloops;
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dealloc_dir = 0;
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nloops = 0;
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err = 0;
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while (1)
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{
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if (dealloc_dir)
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__mach_port_deallocate (__mach_task_self (), startdir);
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if (err)
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return lookup_error (err);
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switch (doretry)
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{
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case FS_RETRY_REAUTH:
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{
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mach_port_t ref = __mach_reply_port ();
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err = __io_reauthenticate (*result,
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ref, MACH_MSG_TYPE_MAKE_SEND);
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if (! err)
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err = __USEPORT
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(AUTH, __auth_user_authenticate (port, *result,
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ref,
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MACH_MSG_TYPE_MAKE_SEND,
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&newpt));
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__mach_port_destroy (__mach_task_self (), ref);
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}
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__mach_port_deallocate (__mach_task_self (), *result);
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if (err)
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return err;
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*result = newpt;
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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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if (retryname[0] == '\0')
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{
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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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if (flags & O_EXLOCK)
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; /* XXX */
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if (!err && (flags & O_SHLOCK))
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; /* XXX */
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if (!err && (flags & O_TRUNC))
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err = __file_set_size (*result, 0);
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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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dealloc_dir = 1;
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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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startdir = crdir;
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dealloc_dir = 0;
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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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fd = (int) strtol (retryname, &end, 10);
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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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*result = __getdport (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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error_t err = errno;
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errno = save;
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return err;
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}
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errno = save;
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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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dealloc_dir = 1;
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file_name = end + 1; /* Skip the slash. */
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break;
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}
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}
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else
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goto bad_magic;
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break;
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case 'm':
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if (retryname[1] == 'a' && retryname[2] == 'c' &&
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retryname[3] == 'h' && retryname[4] == 't' &&
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retryname[5] == 'y' && retryname[6] == 'p' &&
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retryname[7] == 'e')
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{
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error_t err;
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struct host_basic_info hostinfo;
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mach_msg_type_number_t hostinfocnt = HOST_BASIC_INFO_COUNT;
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char *p;
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if (err = __host_info (__mach_host_self (), HOST_BASIC_INFO,
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(natural_t *) &hostinfo,
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&hostinfocnt))
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return err;
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if (hostinfocnt != HOST_BASIC_INFO_COUNT)
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return EGRATUITOUS;
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p = _itoa (hostinfo.cpu_subtype, &retryname[8], 10, 0);
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*--p = '/';
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p = _itoa (hostinfo.cpu_type, &retryname[8], 10, 0);
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if (p < retryname)
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abort (); /* XXX write this right if this ever happens */
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if (p > retryname)
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strcpy (retryname, p);
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startdir = *result;
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dealloc_dir = 1;
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}
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else
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goto bad_magic;
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break;
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case 't':
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if (retryname[1] == 't' && retryname[2] == 'y')
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switch (retryname[3])
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{
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error_t opentty (file_t *result)
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{
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error_t err;
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file_t unauth;
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err = __USEPORT (CTTYID,
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__termctty_open_terminal (port,
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flags,
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&unauth));
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if (! err)
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{
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mach_port_t ref = __mach_reply_port ();
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err = __io_reauthenticate
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(unauth,
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ref,
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MACH_MSG_TYPE_MAKE_SEND);
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if (! err)
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err = __USEPORT
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(AUTH, __auth_user_authenticate
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(port,
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unauth,
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ref, MACH_MSG_TYPE_MAKE_SEND,
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result));
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__mach_port_deallocate (__mach_task_self (),
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unauth);
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__mach_port_destroy (__mach_task_self (), ref);
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}
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return err;
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}
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case '\0':
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return opentty (result);
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case '/':
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if (err = opentty (&startdir))
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return err;
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dealloc_dir = 1;
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strcpy (retryname, &retryname[4]);
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break;
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default:
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goto bad_magic;
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}
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else
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goto bad_magic;
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break;
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default:
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bad_magic:
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return EGRATUITOUS;
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}
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break;
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default:
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return EGRATUITOUS;
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}
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err = __dir_lookup (startdir, file_name, flags, mode,
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&doretry, retryname, result);
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}
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}
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weak_alias (__hurd_file_name_lookup_retry, hurd_file_name_lookup_retry)
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error_t
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__hurd_file_name_split (file_t crdir, file_t cwdir,
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const char *file_name,
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file_t *dir, char **name)
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{
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const char *lastslash;
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error_t err;
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lastslash = strrchr (file_name, '/');
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if (lastslash != NULL)
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{
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if (lastslash == file_name)
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{
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/* "/foobar" => crdir + "foobar". */
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*name = (char *) file_name + 1;
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if (err = __mach_port_mod_refs (__mach_task_self (),
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crdir, MACH_PORT_RIGHT_SEND, +1))
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return err;
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*dir = crdir;
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return 0;
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}
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else
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{
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/* "/dir1/dir2/.../file". */
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char dirname[lastslash - file_name + 1];
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memcpy (dirname, file_name, lastslash - file_name);
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dirname[lastslash - file_name] = '\0';
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*name = (char *) lastslash + 1;
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return __hurd_file_name_lookup (crdir, cwdir, dirname, 0, 0, dir);
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}
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}
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else
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{
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/* "foobar" => cwdir + "foobar". */
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*name = (char *) file_name;
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if (err = __mach_port_mod_refs (__mach_task_self (),
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cwdir, MACH_PORT_RIGHT_SEND, +1))
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return err;
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*dir = cwdir;
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return 0;
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}
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}
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weak_alias (__hurd_file_name_split, hurd_file_name_split)
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file_t
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__file_name_lookup (const char *file_name, int flags, mode_t mode)
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{
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error_t err;
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file_t result, crdir, cwdir;
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struct hurd_userlink crdir_ulink, cwdir_ulink;
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crdir = _hurd_port_get (&_hurd_ports[INIT_PORT_CRDIR], &crdir_ulink);
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cwdir = _hurd_port_get (&_hurd_ports[INIT_PORT_CWDIR], &cwdir_ulink);
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err = __hurd_file_name_lookup (crdir, cwdir, file_name, flags, mode,
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&result);
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_hurd_port_free (&_hurd_ports[INIT_PORT_CRDIR], &crdir_ulink, crdir);
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_hurd_port_free (&_hurd_ports[INIT_PORT_CWDIR], &cwdir_ulink, cwdir);
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if (err)
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return __hurd_fail (err), MACH_PORT_NULL;
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else
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return result;
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}
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weak_alias (__file_name_lookup, file_name_lookup)
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file_t
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__file_name_split (const char *file_name, char **name)
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{
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error_t err;
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file_t dir, crdir, cwdir;
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struct hurd_userlink crdir_ulink, cwdir_ulink;
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crdir = _hurd_port_get (&_hurd_ports[INIT_PORT_CRDIR], &crdir_ulink);
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cwdir = _hurd_port_get (&_hurd_ports[INIT_PORT_CWDIR], &cwdir_ulink);
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err = __hurd_file_name_split (crdir, cwdir, file_name, &dir, name);
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_hurd_port_free (&_hurd_ports[INIT_PORT_CRDIR], &crdir_ulink, crdir);
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_hurd_port_free (&_hurd_ports[INIT_PORT_CWDIR], &cwdir_ulink, cwdir);
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if (err)
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{
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errno = err;
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return MACH_PORT_NULL;
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}
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else
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return dir;
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}
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weak_alias (__file_name_split, file_name_split)
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