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Update.
* misc/daemon.c (daemon): Fail if !noclose and we cannot open the real /dev/null device. * sysdeps/generic/check_fds.c: Include device-nrs.h. * sysdeps/generic/device-nrs.h: New file. * sysdeps/unix/sysv/linux/device-nrs.h: New file. * misc/Makefile (distribute): Add device-nrs.h. * posix/wordexp.c (exec_comm_child): Likewise. * locale/nl_langinfo.c: Allow use of file for __nl_langinfo_l definition.
This commit is contained in:
Ulrich Drepper
parent
e5448d7ad2
commit
316ca440b0
12
ChangeLog
12
ChangeLog
@ -1,5 +1,13 @@
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2000-09-26 Ulrich Drepper <drepper@redhat.com>
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* misc/daemon.c (daemon): Fail if !noclose and we cannot open the
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real /dev/null device.
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* sysdeps/generic/check_fds.c: Include device-nrs.h.
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* sysdeps/generic/device-nrs.h: New file.
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* sysdeps/unix/sysv/linux/device-nrs.h: New file.
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* misc/Makefile (distribute): Add device-nrs.h.
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* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Use O_TRUNC to
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remove possible garbage at the end of the file.
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@ -10,15 +18,17 @@
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* stdio-common/tempnam.c: Warn about insecure tempnam.
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* misc/mktemp.c: Warn about insecure mktemp.
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* sysdeps/unix/sysv/linux/check_fds.c: New file.
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* sysdeps/generic/check_fds.c: Check that file opened is really
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/dev/null.
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* posix/wordexp.c (exec_comm_child): Likewise.
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* elf/rtld.c (process_envvars): Open debug output file with O_NOFOLLOW.
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* locale/Makefile (routines): Add nl_langinfo_l.
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* locale/Versions [libc] (GLIBC_2.2): Add __nl_langinfo_l.
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* locale/nl_langinfo_l.c: New file.
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* locale/nl_langinfo.c: Allow use of file for __nl_langinfo_l
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definition.
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2000-09-23 Bruno Haible <haible@clisp.cons.org>
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@ -25,9 +25,16 @@
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/* Return a string with the data for locale-dependent parameter ITEM. */
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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char *
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__nl_langinfo_l (item, l)
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nl_item item;
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__locale_t l;
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#else
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char *
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nl_langinfo (item)
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nl_item item;
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#endif
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{
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int category = _NL_ITEM_CATEGORY (item);
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unsigned int index = _NL_ITEM_INDEX (item);
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@ -37,7 +44,11 @@ nl_langinfo (item)
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/* Bogus category: bogus item. */
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return (char *) "";
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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data = l->__locales[category];
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#else
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data = *_nl_current[category];
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#endif
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if (index >= data->nstrings)
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/* Bogus index for this category: bogus item. */
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@ -1,4 +1,4 @@
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# Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
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# Copyright (C) 1991-1999, 2000 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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@ -59,6 +59,8 @@ routines := brk sbrk sstk ioctl \
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getsysstats dirname regexp \
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getloadavg
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distribute := device-nrs.h
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include ../Makeconfig
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aux := init-misc
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@ -34,6 +34,9 @@ static char sccsid[] = "@(#)daemon.c 8.1 (Berkeley) 6/4/93";
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#include <fcntl.h>
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#include <paths.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <device-nrs.h>
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int
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daemon(nochdir, noclose)
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@ -57,11 +60,23 @@ daemon(nochdir, noclose)
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(void)__chdir("/");
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if (!noclose && (fd = __open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
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(void)__dup2(fd, STDIN_FILENO);
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(void)__dup2(fd, STDOUT_FILENO);
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(void)__dup2(fd, STDERR_FILENO);
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if (fd > 2)
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struct stat64 st;
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if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) == 0
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&& __builtin_expect (S_ISCHR (st.st_mode), 1) != 0
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#if defined DEV_NULL_MAJOR && defined DEV_NULL_MINOR
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&& st.st_rdev == makedev (DEV_NULL_MAJOR, DEV_NULL_MINOR)
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#endif
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) {
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(void)__dup2(fd, STDIN_FILENO);
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(void)__dup2(fd, STDOUT_FILENO);
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(void)__dup2(fd, STDERR_FILENO);
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if (fd > 2)
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(void)__close (fd);
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} else {
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(void)__close (fd);
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return -1;
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}
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}
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return (0);
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}
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@ -44,6 +44,9 @@
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/* #define NDEBUG 1 */
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#include <assert.h>
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/* Get some device information. */
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#include <device-nrs.h>
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/*
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* This is a recursive-descent-style word expansion routine.
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*/
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@ -840,6 +843,7 @@ exec_comm_child (char *comm, int *fildes, int showerr, int noexec)
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/* Redirect stderr to /dev/null if we have to. */
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if (showerr == 0)
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{
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struct stat64 st;
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int fd;
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__close (2);
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fd = __open (_PATH_DEVNULL, O_WRONLY);
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@ -848,6 +852,18 @@ exec_comm_child (char *comm, int *fildes, int showerr, int noexec)
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__dup2 (fd, 2);
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__close (fd);
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}
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/* Be paranoid. Check that we actually opened the /dev/null
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device. */
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if (__builtin_expect (__fxstat64 (_STAT_VER, 2, &st), 0) != 0
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|| __builtin_expect (S_ISCHR (st.st_mode), 1) == 0
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#if defined DEV_NULL_MAJOR && defined DEV_NULL_MINOR
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|| st.st_rdev != makedev (DEV_NULL_MAJOR, DEV_NULL_MINOR)
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#endif
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)
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/* It's not the /dev/null device. Stop right here. The
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problem is: how do we stop? We use _exit() with an
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hopefully unusual exit code. */
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_exit (90);
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}
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/* Make sure the subshell doesn't field-split on our behalf. */
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@ -31,6 +31,8 @@
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# define ABORT_INSTRUCTION
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#endif
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#include <device-nrs.h>
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/* Should other OSes (e.g., Hurd) have different versions which can
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be written in a better way? */
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25
sysdeps/generic/device-nrs.h
Normal file
25
sysdeps/generic/device-nrs.h
Normal file
@ -0,0 +1,25 @@
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/* Device numbers of devices used in the implementation. Generic version.
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Copyright (C) 2000 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 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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#ifndef _DEVICE_NRS_H
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#define _DEVICE_NRS_H 1
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/* By default we know no device numbers. */
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#endif /* device-nrs.h */
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@ -1,4 +1,5 @@
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/* Copyright (C) 2000 Free Software Foundation, Inc.
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/* Device numbers of devices used in the implementation. Linux version.
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Copyright (C) 2000 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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@ -16,7 +17,11 @@
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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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#ifndef _DEVICE_NRS_H
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#define _DEVICE_NRS_H 1
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/* /dev/null is (1,3). */
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#define DEV_NULL_MAJOR 1
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#define DEV_NULL_MINOR 3
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#include <sysdeps/generic/check_fds.c>
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#endif /* device-nrs.h */
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