diff options
Diffstat (limited to 'libio/freopen.c')
| -rw-r--r-- | libio/freopen.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/libio/freopen.c b/libio/freopen.c deleted file mode 100644 index 980523af48..0000000000 --- a/libio/freopen.c +++ /dev/null @@ -1,109 +0,0 @@ -/* Copyright (C) 1993-2017 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, see - <http://www.gnu.org/licenses/>. - - As a special exception, if you link the code in this file with - files compiled with a GNU compiler to produce an executable, - that does not cause the resulting executable to be covered by - the GNU Lesser General Public License. This exception does not - however invalidate any other reasons why the executable file - might be covered by the GNU Lesser General Public License. - This exception applies to code released by its copyright holders - in files containing the exception. */ - -#include "libioP.h" -#include "stdio.h" -#include <fcntl.h> -#include <stdlib.h> -#include <unistd.h> - -#include <shlib-compat.h> -#include <fd_to_filename.h> - -#include <kernel-features.h> - -FILE * -freopen (const char *filename, const char *mode, FILE *fp) -{ - FILE *result; - CHECK_FILE (fp, NULL); - if (!(fp->_flags & _IO_IS_FILEBUF)) - return NULL; - _IO_acquire_lock (fp); - int fd = _IO_fileno (fp); - const char *gfilename = (filename == NULL && fd >= 0 - ? fd_to_filename (fd) : filename); - fp->_flags2 |= _IO_FLAGS2_NOCLOSE; -#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) - if (&_IO_stdin_used == NULL) - { - /* If the shared C library is used by the application binary which - was linked against the older version of libio, we just use the - older one even for internal use to avoid trouble since a pointer - to the old libio may be passed into shared C library and wind - up here. */ - _IO_old_file_close_it (fp); - _IO_JUMPS_FILE_plus (fp) = &_IO_old_file_jumps; - result = _IO_old_file_fopen (fp, gfilename, mode); - } - else -#endif - { - _IO_file_close_it (fp); - _IO_JUMPS_FILE_plus (fp) = &_IO_file_jumps; - if (_IO_vtable_offset (fp) == 0 && fp->_wide_data != NULL) - fp->_wide_data->_wide_vtable = &_IO_wfile_jumps; - result = _IO_file_fopen (fp, gfilename, mode, 1); - if (result != NULL) - result = __fopen_maybe_mmap (result); - } - fp->_flags2 &= ~_IO_FLAGS2_NOCLOSE; - if (result != NULL) - { - /* unbound stream orientation */ - result->_mode = 0; - - if (fd != -1 && _IO_fileno (result) != fd) - { - /* At this point we have both file descriptors already allocated, - so __dup3 will not fail with EBADF, EINVAL, or EMFILE. But - we still need to check for EINVAL and, due Linux internal - implementation, EBUSY. It is because on how it internally opens - the file by splitting the buffer allocation operation and VFS - opening (a dup operation may run when a file is still pending - 'install' on VFS). */ - if (__dup3 (_IO_fileno (result), fd, - (result->_flags2 & _IO_FLAGS2_CLOEXEC) != 0 - ? O_CLOEXEC : 0) == -1) - { - _IO_file_close_it (result); - result = NULL; - goto end; - } - __close (_IO_fileno (result)); - _IO_fileno (result) = fd; - } - } - else if (fd != -1) - __close (fd); - -end: - if (filename == NULL) - free ((char *) gfilename); - - _IO_release_lock (fp); - return result; -} |