39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
/*
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* Copyright (c) 2013, 2014, 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/fshutdown.c
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* Uninstalls the backend from a FILE so another can be reinstalled.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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int fshutdown(FILE* fp)
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{
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int ret = fp->fflush_indirect ? fp->fflush_indirect(fp) : 0;
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if ( ret )
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{
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/* TODO: How to report errors here? fclose may need us to return its
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exact error value, for instance, as with popen/pclose. */;
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}
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ret = fp->close_func ? fp->close_func(fp->user) : ret;
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// Resetting the FILE here isn't needed in the case where fclose calls us,
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// but it's nice to zero it out anyway (avoiding stale) data, and it's a
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// feature when called by freopen that wishes to reuse the FILE. It also
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// means that the file is always in a consistent state.
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fresetfile(fp);
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return ret;
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}
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