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739d440d2a
2002-07-19 Ulrich Drepper <drepper@redhat.com> * configure.in: Add test for __thread support in compiler. * config.h.in: Add HAVE___THREAD. * Makefile (headers): Remove errno.h, sys/errno.h, and bits/errno.h. * include/sys/errno.h: Moved to... * stdlib/sys/errno.h: ...here. New file. * stdlib/errno.h: New file. Moved from... * include/errno.h: ...here. Changed into an internal header defining libc-local things like __set_errno. * stdlib/Makefile (headers): Add errno.h, sys/errno.h, and bits/errno.h. * elf/dl-minimal.c: Include <tls.h>. Define errno as thread-local variable if USE_TLS && HAVE___THREAD. Don't define __errno_location either. * elf/rtld.c (_dl_start): Add code to initialize TLS for ld.so from... (_dl_start_final): ...here. Add code to initialize tls elements from bootstrap_map. * sysdeps/generic/errno-loc.c: Define errno as thread-local variable if USE_TLS && HAVE___THREAD. * sysdeps/generic/bits/errno.h: Remove __set_errno definition. * sysdeps/mach/hurd/bits/errno.h: Likewise. * sysdeps/standalone/arm/bits/errno.h: Likewise. * sysdeps/standalone/bits/errno.h: Likewise. * sysdeps/unix/bsd/bsd4.4/bits/errno.h: Likewise. * sysdeps/unix/sysv/aix/bits/errno.h: Likewise. * sysdeps/unix/sysv/hpux/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/hppa/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/errno.h: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h: Likewise. * sysdeps/i386/dl-machine.c (elf_machine_rel) [RTLD_BOOTSTRAP]: Don't use GL(dl_rtld_map), use map parameter. * sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.S: Define errno in .tbss if USE_TLS && HAVE___THREAD. * sysdeps/unix/sysv/linux/i386/sysdep.h: Unify SETUP_PIC_REG definitions. If USE_TLS && HAVE___THREAD store errooor value using TLS code sequence. * sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/getcwd.c: No real need to restore errno. * sysdeps/unix/sysv/linux/grantpt.c: Likewise. * sysdeps/unix/sysv/linux/internal_statvfs.c: Likewise. * sysdeps/unix/sysv/linux/msgctl.c: Likewise. * sysdeps/unix/sysv/linux/readv.c: Likewise. * sysdeps/unix/sysv/linux/writev.c: Likewise.
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* Copyright (C) 1998, 1999, 2001, 2002 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <sys/statfs.h>
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#include "linux_fsinfo.h"
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/* Prototype for function that changes ownership and access permission
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for slave pseudo terminals that do not live on a `devpts'
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filesystem. */
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static int __unix_grantpt (int fd);
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/* Prototype for private function that gets the name of the slave
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pseudo terminal in a safe way. */
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static int pts_name (int fd, char **pts, size_t buf_len);
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/* Change the ownership and access permission of the slave pseudo
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terminal associated with the master pseudo terminal specified
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by FD. */
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int
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grantpt (int fd)
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{
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struct statfs fsbuf;
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#ifdef PATH_MAX
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char _buf[PATH_MAX];
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#else
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char _buf[512];
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#endif
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char *buf = _buf;
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if (__builtin_expect (pts_name (fd, &buf, sizeof (_buf)), 0))
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{
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int save_errno = errno;
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/* Check, if the file descriptor is valid. pts_name returns the
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wrong errno number, so we cannot use that. */
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if (__libc_fcntl (fd, F_GETFD) == -1 && errno == EBADF)
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return -1;
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/* If the filedescriptor is no TTY, grantpt has to set errno
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to EINVAL. */
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if (save_errno == ENOTTY)
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__set_errno (EINVAL);
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else
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__set_errno (save_errno);
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return -1;
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}
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if (__statfs (buf, &fsbuf) < 0)
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return -1;
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/* If the slave pseudo terminal lives on a `devpts' filesystem, the
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ownership and access permission are already set. */
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if (fsbuf.f_type == DEVPTS_SUPER_MAGIC || fsbuf.f_type == DEVFS_SUPER_MAGIC)
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return 0;
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return __unix_grantpt (fd);
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}
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#define grantpt static __unix_grantpt
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#include <sysdeps/unix/grantpt.c>
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