43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*
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* Copyright (c) 2013, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* stdio/freopen.c
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* Changes the file with which a FILE is associated.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include "fdio.h"
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FILE* freopen(const char* path, const char* mode, FILE* fp)
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{
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if ( !path )
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return errno = EBADF, (FILE*) NULL;
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// Uninstall the current backend of the FILE (after flushing) and return the
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// FILE to the default state (like a new object from fnewfile).
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fshutdown(fp);
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// Attempt to open the new path and install that into our FILE object.
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if ( !fdio_install_path(fp, path, mode) )
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{
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fclose(fp);
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return NULL;
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}
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return fp;
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}
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