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2005-12-13 Ulrich Drepper <drepper@redhat.com>
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Ulrich Drepper
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Dec 14, 2005
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| /* Copyright (C) 1994, 1997 Free Software Foundation, Inc. | ||
| This file is part of the GNU C Library. | ||
| Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), | ||
| On-Line Applications Research Corporation. | ||
| 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, write to the Free | ||
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
| 02111-1307 USA. */ | ||
|
|
||
| #include <standalone.h> | ||
|
|
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| /* This file is only required when a "bare" board is configured. */ | ||
|
|
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| /* _Board_Initialize | ||
| This routine normally performs board specific initialization. */ | ||
|
|
||
| void | ||
| _Board_Initialize () | ||
| { | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| /* Copyright (C) 1994, 1997 Free Software Foundation, Inc. | ||
| This file is part of the GNU C Library. | ||
| Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), | ||
| On-Line Applications Research Corporation. | ||
| 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, write to the Free | ||
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
| 02111-1307 USA. */ | ||
|
|
||
| #include <standalone.h> | ||
|
|
||
| /* This file is only required when a "bare" board is configured. */ | ||
|
|
||
| /* These routines provide console IO routines for your embedded target. */ | ||
|
|
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| int | ||
| _Console_Putc (ch) | ||
| char ch; | ||
| { | ||
| /* eat the character */ | ||
|
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| return 0; | ||
| } | ||
|
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| int | ||
| _Console_Getc (poll) | ||
| int poll; | ||
| { | ||
| /* boring user, never types anything */ | ||
| return -1; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /* Copyright (C) 2000, 2002, 2003, 2005 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, write to the Free | ||
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
| 02111-1307 USA. */ | ||
|
|
||
| #include <errno.h> | ||
| #include <fcntl.h> | ||
| #include <paths.h> | ||
| #include <unistd.h> | ||
| #include <sys/stat.h> | ||
| #include <sys/sysmacros.h> | ||
|
|
||
| /* Try to get a machine dependent instruction which will make the | ||
| program crash. This is used in case everything else fails. */ | ||
| #include <abort-instr.h> | ||
| #ifndef ABORT_INSTRUCTION | ||
| /* No such instruction is available. */ | ||
| # define ABORT_INSTRUCTION | ||
| #endif | ||
|
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| #include <device-nrs.h> | ||
| #include <not-cancel.h> | ||
|
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|
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| /* Should other OSes (e.g., Hurd) have different versions which can | ||
| be written in a better way? */ | ||
| static void | ||
| check_one_fd (int fd, int mode) | ||
| { | ||
| /* Note that fcntl() with this parameter is not a cancellation point. */ | ||
| if (__builtin_expect (__libc_fcntl (fd, F_GETFD), 0) == -1 | ||
| && errno == EBADF) | ||
| { | ||
| const char *name; | ||
| dev_t dev; | ||
|
|
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| /* For writable descriptors we use /dev/full. */ | ||
| if ((mode & O_ACCMODE) == O_WRONLY) | ||
| { | ||
| name = _PATH_DEV "full"; | ||
| dev = makedev (DEV_FULL_MAJOR, DEV_FULL_MINOR); | ||
| } | ||
| else | ||
| { | ||
| name = _PATH_DEVNULL; | ||
| dev = makedev (DEV_NULL_MAJOR, DEV_NULL_MINOR); | ||
| } | ||
|
|
||
| /* Something is wrong with this descriptor, it's probably not | ||
| opened. Open /dev/null so that the SUID program we are | ||
| about to start does not accidently use this descriptor. */ | ||
| int nullfd = open_not_cancel (name, mode, 0); | ||
|
|
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| /* We are very paranoid here. With all means we try to ensure | ||
| that we are actually opening the /dev/null device and nothing | ||
| else. | ||
| Note that the following code assumes that STDIN_FILENO, | ||
| STDOUT_FILENO, STDERR_FILENO are the three lowest file | ||
| decsriptor numbers, in this order. */ | ||
| struct stat64 st; | ||
| if (__builtin_expect (nullfd != fd, 0) | ||
| || __builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) != 0 | ||
| || __builtin_expect (S_ISCHR (st.st_mode), 1) == 0 | ||
| || st.st_rdev != dev) | ||
| /* We cannot even give an error message here since it would | ||
| run into the same problems. */ | ||
| while (1) | ||
| /* Try for ever and ever. */ | ||
| ABORT_INSTRUCTION; | ||
| } | ||
| } | ||
|
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|
|
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| void | ||
| __libc_check_standard_fds (void) | ||
| { | ||
| /* This is really paranoid but some people actually are. If /dev/null | ||
| should happen to be a symlink to somewhere else and not the device | ||
| commonly known as "/dev/null" we bail out. We can detect this with | ||
| the O_NOFOLLOW flag for open() but only on some system. */ | ||
| #ifndef O_NOFOLLOW | ||
| # define O_NOFOLLOW 0 | ||
| #endif | ||
| /* Check all three standard file descriptors. */ | ||
| check_one_fd (STDIN_FILENO, O_WRONLY | O_NOFOLLOW); | ||
| check_one_fd (STDOUT_FILENO, O_RDONLY | O_NOFOLLOW); | ||
| check_one_fd (STDERR_FILENO, O_RDONLY | O_NOFOLLOW); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /* MT support function to get address of `errno' variable, non-threaded | ||
| version. | ||
| Copyright (C) 1996, 1998, 2002, 2004 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, write to the Free | ||
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
| 02111-1307 USA. */ | ||
|
|
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| #include <errno.h> | ||
| #include <tls.h> | ||
|
|
||
| #if ! USE___THREAD && !RTLD_PRIVATE_ERRNO | ||
| #undef errno | ||
| extern int errno; | ||
| #endif | ||
|
|
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| int * | ||
| #if ! USE___THREAD | ||
| weak_const_function | ||
| #endif | ||
| __errno_location (void) | ||
| { | ||
| return &errno; | ||
| } | ||
| libc_hidden_def (__errno_location) |
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