47 lines
1.3 KiB
C
47 lines
1.3 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/setvbuf_unlocked.c
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* Sets up buffering semantics for a FILE.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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int setvbuf_unlocked(FILE* fp, char* buf, int mode, size_t size)
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{
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(void) buf;
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(void) size;
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if ( mode == -1 )
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{
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#ifdef __is_sortix_libk
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mode = _IOLBF;
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#else
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mode = _IOFBF;
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int saved_errno = errno;
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if ( isatty(fileno_unlocked(fp)) )
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mode = _IOLBF;
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errno = saved_errno;
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#endif
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}
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if ( !fp->buffer )
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mode = _IONBF;
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fp->buffer_mode = mode;
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fp->flags |= _FILE_BUFFER_MODE_SET;
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fp->fflush_indirect = fflush_unlocked;
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return 0;
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}
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